KR20240012842A - Probe Pin, Battery Cell Fixing Module, and Battery Cell Inspection Apparatus Including the Same - Google Patents

Abstract

Disclosed is a probe pin, a battery cell fixing module, and a battery cell inspection device including the same.
According to one aspect of the present embodiment, in the electrode connection module electrically connected to the battery cell or the battery cell electrode, a connection member electrically connected to the frame and the battery cell electrode is coupled to a position of the connection member, A rotating member that rotates the connecting member when the connecting member receives an external force, one end of which is connected to the frame and the other end of which is connected to the rotating member, an elastic member that returns the rotating member to its initial position, and an elastic member within the frame. An electrode connection module is provided, which includes a bearing that is positioned to rotate the rotating member in place.

Description

Probe Pin, Battery Cell Fixing Module, and Battery Cell Inspection Apparatus Including the Same}

This embodiment relates to a probe pin, a battery cell fixing module, and a battery cell inspection device including the same.

The content described in this section simply provides background information for this embodiment and does not constitute prior art.

In general, secondary batteries can be recharged and have large capacities, and representative examples include nickel cadmium, nickel hydrogen, and lithium ion batteries. Secondary batteries can be manufactured in a flexible pouched type, which has the advantage of being relatively free in shape.

Secondary batteries include pouches and battery cells. The secondary battery is provided with a cell pouch to place a battery cell inside, and a polymer exterior material corresponding to the pouch surrounds the battery cell.

Meanwhile, tests must be conducted to determine whether the manufactured secondary battery has the electrical characteristics as designed and whether there are any short-circuits in each cell. Accordingly, the manufactured secondary battery cell is transferred from the pouch to the inspection device, is placed on the inspection device, and is inspected. For inspection, a probe pin must be in contact with the electrode of each cell, and the conventional probe pin has been in contact with the electrode of the cell while oscillating on a certain axis.

However, since the probe pin vibrates along the axis, no problem occurs if the secondary battery cell moves on the axis of the probe pin toward the probe pin. However, when the secondary battery cell moves in a direction having a certain angle with the axis of the probe pin, the probe pin receives external force even in a direction that is distorted from the axial direction, causing wear. Accordingly, a problem occurs in which the probe pin cannot operate within its expected lifespan.

The purpose of one embodiment of the present invention is to provide a probe pin that improves the lifespan by minimizing wear of the probe pin in contact with the electrode of the battery cell, a battery cell fixing module, and a battery cell inspection device including the same.

In addition, an embodiment of the present invention aims to provide a probe pin, a battery cell fixing module, and a battery cell inspection device including the same that improve the lifespan by minimizing damage to battery cell electrodes.

According to one aspect of the present embodiment, in the electrode connection module electrically connected to the battery cell or the battery cell electrode, a connection member electrically connected to the frame and the battery cell electrode is coupled to a position of the connection member, A rotating member that rotates the connecting member when the connecting member receives an external force, one end of which is connected to the frame and the other end of which is connected to the rotating member, an elastic member that returns the rotating member to its initial position, and an elastic member within the frame. An electrode connection module is provided, which includes a bearing that is positioned to rotate the rotating member in place.

According to one aspect of this embodiment, the connecting member includes a coupling hole through which the rotating member can be coupled.

According to one aspect of this embodiment, the coupling hole is formed in a position away from the center of the connecting member.

According to one aspect of this embodiment, the rotating member includes an engaging protrusion to be coupled to the engaging hole and the engaging member.

According to one aspect of this embodiment, the engaging protrusion is formed at the center of the rotating member.

According to one aspect of this embodiment, the rotating member is characterized in that it is implemented in the form of a roller.

According to one aspect of this embodiment, the initial position of the rotating member is characterized in that a portion of the connecting member connected to the rotating member protrudes to the outside of the frame.

According to one aspect of this embodiment, the bearing is implemented at a position corresponding to the rotation axis of the rotation member within the frame.

According to one aspect of this embodiment, the electrode connection module is disposed on the outside of the bearing within the frame and further includes a stop ring to prevent the bearing from being separated.

According to one aspect of this embodiment, the rotating member and the connecting member are characterized by being implemented with a conductive material.

According to one aspect of the present embodiment, in the electrode connection module electrically connected to the battery cell or the battery cell electrode, the battery cell approaches the connection member and the connection member that is electrically connected by contacting the frame and the battery cell electrode. It includes an electrode connection module characterized by including a battery cell detection sensor that senses whether or not the battery cell is present.

According to one aspect of this embodiment, the battery cell detection sensor is characterized by having a protrusion protruding toward the connecting member from the bottom of the connecting member.

According to one aspect of this embodiment, the protrusions are implemented in two pieces and are implemented with a gap so that they can be positioned between them when the battery cell is electrically connected to the connection member.

According to one aspect of this embodiment, in the battery cell fixing module that fixes the battery cell and moves together with the movement of the battery cell, the first frame electrically contacts the battery cell and fixes the battery cell, and the first frame A second frame is connected to the frame and allows the first frame to move along the axis along which the battery cell moves, and is disposed to face both frames at a predetermined distance from the first frame and the second frame. A battery cell fixing module comprising a lead that receives power from a third frame and moves on the axis along which the battery cell moves and contacts or moves away from the second frame, and an actuator that provides power to the lead. to provide.

According to one aspect of this embodiment, the first frame and the second frame include a through hole having a preset first cross-sectional area, and the third frame includes a through hole or groove having a preset second cross-sectional area. Do it as

According to one aspect of this embodiment, the battery cell fixing module further includes a shaft that penetrates the through hole of the first frame and the second frame and flows into the through hole or groove of the third frame. do.

According to one aspect of this embodiment, the through hole or groove of the third frame is characterized in that it has the same size as the cross-sectional area of the shaft.

According to one aspect of this embodiment, the battery cell fixing module contacts the shaft internally and the through hole of the first frame and the second frame externally, respectively, and connects the first frame and the second frame to each other. It is characterized in that it further includes a bush that moves along the shaft.

According to one aspect of this embodiment, the battery cell fixing module further includes a fixing ring on the outer surface of the second frame to prevent the bush of the second frame from leaving.

According to one aspect of this embodiment, the battery cell fixing module further includes a stopper disposed at an end of the shaft to prevent the bush and the fixing ring from being separated.

According to one aspect of this embodiment, the shaft is characterized in that it is implemented in plural numbers.

According to one aspect of this embodiment, the lead is in contact with the second frame and prevents movement of the second frame.

According to one aspect of this embodiment, the lead moves away from the second frame, and the second frame can move toward the lead up to the position of the lead.

According to one aspect of the present embodiment, the battery cell fixing module further includes a connecting member that is electrically connected by contacting the electrode of the battery cell, and a battery cell detection sensor that senses whether the battery cell is approaching the connecting member. It is characterized by:

As described above, according to one aspect of the present embodiment, there is an advantage of improving the lifespan by minimizing wear of the probe pins in contact with the electrodes of the battery cell.

Additionally, according to one aspect of this embodiment, there is an advantage in that damage to battery cell electrodes can be minimized even when the battery cell moves under pressure.

1 is a perspective view of a battery cell inspection system according to an embodiment of the present invention.
Figure 2 is a plan view of a battery cell inspection system according to an embodiment of the present invention.
Figure 3 is a perspective view of a battery cell transfer device according to an embodiment of the present invention.
4 and 5 are perspective views of a battery cell transfer according to an embodiment of the present invention.
Figure 6 is an enlarged view of a link member and a link member connection portion according to an embodiment of the present invention.
Figure 7 is a cross-sectional view of the first link member connection portion according to an embodiment of the present invention.
Figure 8 is a cross-sectional view of the second link member connection portion according to an embodiment of the present invention.
Figure 9 is a diagram showing the configuration of a battery cell gripper according to an embodiment of the present invention.
Figure 10 is an enlarged cross-sectional view of the second stopper and the stopper support portion according to an embodiment of the present invention.
Figure 11 is a perspective view of a battery cell inspection device according to an embodiment of the present invention.
Figure 12 is a perspective view of a jig press plate according to an embodiment of the present invention.
Figure 13 is a diagram showing a portion where pressure is applied to the jig plate by the jig press plate according to an embodiment of the present invention.
Figure 14 is a perspective view of a jig plate according to an embodiment of the present invention.
Figure 15 is a diagram showing the configuration of the support sheet height adjustment unit and fixing unit according to an embodiment of the present invention.
Figure 16 is a diagram showing the configuration of a support sheet support portion according to an embodiment of the present invention.
Figure 17 is a diagram showing the configuration of a battery cell fixing module according to an embodiment of the present invention.
Figure 18 is a diagram showing the configuration of an electrode connection part in a battery cell fixing module according to an embodiment of the present invention.
Figure 19 is a perspective view of a conveyor according to an embodiment of the present invention.
Figure 20 is a diagram showing the configuration of a battery cell gripper according to another embodiment of the present invention.
Figure 21 is an enlarged view of a portion of a battery cell gripper according to another embodiment of the present invention.
Figure 22 is a diagram showing the configuration of a battery cell gripper according to another embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "include" or "have" should be understood as not precluding the existence or addition possibility of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains.

Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Additionally, each configuration, process, process, or method included in each embodiment of the present invention may be shared within the scope of not being technically contradictory to each other.

FIG. 1 is a perspective view of a battery cell inspection system according to an embodiment of the present invention, and FIG. 2 is a plan view of a battery cell inspection system according to an embodiment of the present invention.

Referring to Figures 1 and 2, the battery cell inspection system 100 according to an embodiment of the present invention includes a battery cell transfer device 110, a battery cell inspection device 120, a conveyor 130, and a control device (not shown). ) includes.

The battery cell inspection system 100 inspects the characteristics of battery cells, particularly battery cells inserted into a pouch-type battery. The battery cell inspection system 100 tests whether battery cells can generate designed electrical characteristics under a preset pressure.

The battery cell transfer device 110 grasps the battery cells in the tray 140 flowing in along the conveyor 130 and transfers them to the battery cell inspection device 120, or the battery cells inspected by the battery cell inspection device 120. It is transferred to the tray 140 (moving along the conveyor 130). The battery cell transfer device 110 holds the battery cells arranged relatively densely within the tray 140 and distributes the battery cells at appropriate intervals for inspection by the battery cell inspection device 120. Transfer to (120). Again, the battery cell transfer device 110 grasps the battery cells that are relatively dispersed within the battery cell inspection device 120, re-concentrates them, and transfers them to the tray 140. A description of each component of the battery cell transfer device 110 will be described later with reference to FIGS. 2 to 10.

The battery cell inspection device 120 inspects the electrical characteristics of a plurality of battery cells to be installed in a preset environment. The battery cell inspection device 120 receives each battery cell transferred by the battery cell transfer device 110. The battery cell inspection device 120 is electrically connected to the seated battery cell and then applies a preset amount of pressure to the battery cell. The battery cell inspection device 120 can apply relatively uniform pressure to each battery cell compared to the prior art. While pressure is applied to each battery cell, the battery cell inspection device 120 supplies power to each battery cell. The battery cell inspection device 120 inspects the electrical characteristics, for example, the amount of current, etc., in the battery cell that receives power in the above-described situation. While a normal battery cell has certain electrical characteristics or output values when subjected to a certain amount of pressure, a defective battery cell does not. The battery cell inspection device 120 determines whether there is an abnormality in each battery cell through the above-described inspection. A description of each component of the battery cell transfer device 120 will be described later with reference to FIGS. 11 to 18.

The conveyor 130 transports the incoming tray 140 along a preset path. The conveyor 130 introduces the tray 140 into one side of the battery cell inspection device 120, bypasses the periphery of the battery cell inspection device 120, and transports it to the side opposite to the battery cell inspection device 120. The conveyor 130 introduces the tray 140 on which the battery cells are placed for inspection to one side of the battery cell inspection device 120 and then stops it. As a result, the conveyor 130 allows the battery cell transfer device 110 to hold the battery cells within the tray 140 stopped at the corresponding position and transfer them to the battery cell inspection device 120. Meanwhile, after the above-described operation is performed, the conveyor 130 bypasses the battery cell inspection device 120 and transfers the tray 140 to a side opposite to the battery cell inspection device 120 and then stops it. At the same time, the conveyor 130 introduces the tray 140 on which the battery cells are placed into one side of the battery cell inspection device 120 for inspection again and then stops it. Accordingly, the battery cell transfer device 110 transfers the battery cells that have been inspected in the battery cell inspection device 120 to the tray 140 (transferred to the opposite side of the battery cell inspection device 120) and performs inspection at the same time. For this purpose, the battery cells are held within the introduced tray 140 and transferred to the battery cell inspection device 120.

The specific structure of the conveyor 130 is shown in FIG. 19.

Figure 19 is a perspective view of a conveyor according to an embodiment of the present invention.

Referring to FIG. 19, the conveyor 130 according to an embodiment of the present invention includes a frame 1910, a cylinder 1920, a distance sensor 1930, a tray detection and acceleration sensor 1934, and a temperature sensor 1938. , includes a tray recognition unit 1940 and a motor (not shown).

The frame 1910 is implemented around the battery cell inspection device 120 and surrounds the battery cell inspection device 120. Accordingly, the frame 1910 is located on one side and one side opposite the battery cell inspection device 120 and is formed to bypass the battery cell inspection device 120. For example, the frame 1910 may be implemented in a 'ㄷ' shape so that the battery cell inspection device 120 is located inside.

The cylinder 1920 is disposed in the center of the frame 1910 and receives power from a motor (not shown) to transfer the tray 140.

The distance detection sensor 1930 senses whether the tray 140 is positioned and stopped. The distance detection sensor 1930 senses whether the tray 140 is located at a position where the battery cell transfer device 110 can grip and transfer the battery cells.

The tray detection and acceleration sensor 1934 detects whether there is a tray 140 flowing into the conveyor 130 and its inflow speed. The tray detection and acceleration sensor 1934 senses whether the tray 140 transported by the cylinder 1920 exists and at what speed it is flowing in. Accordingly, the tray detection and acceleration sensor 1934 allows the incoming tray 140 to stop at the above-described position.

The temperature sensor 1938 is held by the battery cell transfer device 110 and senses the rising temperature of the battery cell. The temperature sensor 1938 is disposed behind, in front of, or at a wider interval than the tray 140 disposed at or adjacent thereto. Accordingly, the temperature sensor 1938 senses the temperature of the battery cell without affecting the transfer of the battery cell.

The tray recognition unit 1940 recognizes the tray 140 flowing into the conveyor 130. An identification number is assigned to each tray 140 so that (an external device) can determine which battery cell contained in the tray 140 has a problem. The tray recognition unit 1940 recognizes the identification number of the tray 140 located in the correct position or the tray 140 passing the correct position.

A motor (not shown) supplies power to rotate the cylinder 1920 and transfer the tray 140.

Referring again to FIGS. 1 and 2, a control unit (not shown) controls the operation of each component.

The control unit (not shown) controls the operation of the conveyor 130. The control unit (not shown) receives sensing values from each sensor within the conveyor 130 and controls the tray 140 to be placed at the above-described position within the conveyor 130. The control unit (not shown) controls the conveyor 130 to transfer the tray 140 from the above-described fixed position to the opposite side (a position for the battery cell transfer device to transfer the tested battery cells to the tray). Since the transfer distance of the conveyor 130 is fixed, the control unit (not shown) can transfer the tray 140 from the above-described fixed position to the opposite side without difficulty. At this time, when transferring the tray 140 that does not contain battery cells, the control unit (not shown) moves the tray 140, which contains battery cells for inspection, to the above-mentioned fixed position by the time the tray can be positioned on the opposite side. Control the conveyor 130 to be positioned at . By controlling in this way, the inspection speed of battery cells can be significantly increased.

The control unit (not shown) controls the operation of the battery cell transfer device 110. The control unit (not shown) transfers the battery cells in the tray 140 to the battery cell inspection device 120 and transfers the battery cells that have been tested in the battery cell inspection device 120 back to the tray 140. Control the transfer to .

The control unit (not shown) controls the operation of the battery cell inspection device 120. The control unit (not shown) controls the battery cell inspection device 120 to inspect the electrical characteristics of each battery cell in a preset environment.

The control unit (not shown) includes components that must be actively operated among all components in each component (110 to 130) to be described later for the above-described control, including a probe pin (described later with reference to FIG. 18A) and a connection roller (see FIG. 18B). It is electrically connected using wires (described later) and wires, and control signals and power can be supplied.

Figure 3 is a perspective view of a battery cell transfer device according to an embodiment of the present invention.

Referring to FIG. 3, the battery cell transfer device 110 according to an embodiment of the present invention includes a first rail 310, a second rail 315, a first motor 320, a second motor 323, It includes a third motor 326, a guide body 330, a screw 340, a nut 350, a first shaft 360, a battery cell transfer 370, and a fixed frame 380.

The first rail 310 is based on the first position within the conveyor 130 where the battery cell transfer device 110 can grip and transfer battery cells and the battery cell inspection device 120 within the conveyor 130. It is formed as an axis (y-axis, hereinafter referred to as 'first axis') connecting the second positions on opposite sides. The first rail 310 is disposed on the pedestal 305 with a preset height (z-axis direction) so that the guide body 330 can move along the first axis.

Two first rails 310 are arranged facing each other, so that both guide bodies 330 can be placed on each first rail 310. The first rail 310 is positioned apart from each other so that the fixing frame 380, the second rail 315, and the guide body 330 can be disposed therebetween, and the guide body 330 is disposed, so that the fixing frame 380 ) and the battery cell transfer 370 connected thereto can be placed.

The second rail 315 is connected to one side of the guide body 330, and moves the fixed frame 380 connected to it along an axis (z-axis, hereinafter referred to as the z-axis) that approaches or moves away from the battery cell inspection device 120/tray 140. It is formed as the 'second axis')). The second rail 315 is connected to one side of the guide body 330 and moves together with the guide body 330 moving along the first rail 310. Meanwhile, the second rail 315 is connected to the fixed frame 380 on the other side, so that the fixed frame 380 and the battery cell transfer 370 connected thereto move in the first axis direction together with the guide body 330. make it possible At the same time, the second rail 315 allows the fixed frame 380 and the battery cell transfer 370 to move on the second axis.

Two second rails 315 are also arranged facing each other, so that the fixing frame 380 can be placed on each second rail 315. The second rail 315 is positioned apart from the length of the fixed frame 380 (on the second axis) so that the fixed frame 380 and the battery cell transfer 370 connected thereto can be disposed.

The first motor 320 supplies power to move the guide body 330 along the first axis on the first rail 310. The first motor 320 may be placed on each of the first rails 310, and both may be interlocked with each other to supply power of the same size.

The second motor 323 supplies power so that the fixed frame 380 connected to one surface of the second rail 315 can be raised and lowered on the second axis. The second motor 323 may also be placed on each of the second rails 315, and both may be interlocked with each other to supply power of the same size.

The third motor 326 supplies power to bring the two battery cell transfers 370 closer to or away from each other (movement on the first axis) along the first shaft 360.

The guide body 330 is connected to the first rail 310 on one side and the second rail 315 on the other side, and moves the second rail 315 on the first axis. For example, the guide body 330 is implemented in an 'ㄴ' shape and is connected to the first rail 310 on the lower side (the side facing the inspection device or tray) and the second rail 315 on the side. do. In particular, a guide part (not shown) is formed on the lower surface that can move along the first rail 310, and can move on the first axis by receiving power from the first motor 320. Meanwhile, since the guide body 330 is connected to the second rail 315 on the other side, the second rail 315 and the fixed frame 380 moving on the second rail 315 are moved along the first axis. move them together Accordingly, the fixing frame 380 and the battery cell transfer 370 connected thereto can be moved to be close to the tray 140 or to be moved to be close to the battery cell inspection device 120 on the first axis by the guide body 330. there is.

The screw 340 and nut 350 receive power from the third motor 326, allowing each battery cell transfer 370 to move away from or approach each other on the first axis.

The screw 340 receives power from the third motor 326 and rotates. The screw 340 is placed on the fixed frame 380 and is fixed so that it can rotate without leaving its original position. Meanwhile, the nut 350 is located outside (a position farther from the center) than the connection portion 413 (described later with reference to FIG. 4) within the battery cell transfer 370 based on the center of the screw 340, ) moves closer to the center of the screw 340 or moves away from the center. The connection portion 413 within the battery cell transfer 370 is disposed at one position of the screw 340 and moves together with the movement of the nut 350.

The first shaft 360 is disposed on the fixed frame 380 coaxially with the screw 360 and supports the battery cell transfer 370. The connection portion 416 within the battery cell transfer 370 is mounted on the first shaft 360. The connection portion 416 moves on the first shaft 360 with the movement of the battery cell transfer 370 (by the nut 350). Accordingly, the weight of the battery cell transfer 370 is not applied entirely to the screw 340, but is distributed to the first shaft 360 and the screw 340. The first shaft 360 shares and supports the weight of the battery cell transfer 370 and increases the lifespan of the screw 340.

The battery cell transfer 370 moves in the first axis by the guide body 330 and in the second axis by the fixed frame 380, and holds the battery cell in the tray 140 or the battery cell inspection device 120. transfer. The battery cell transfer 370 is operated on a first axis by a guide body 330 moving along the first rail 310 and on a second axis by a fixed frame 380 moving along the second rail 315. move Accordingly, it is possible to move toward the tray 140 containing battery cells for inspection or the battery cell inspection device 120 that has completed inspection.

Meanwhile, the battery cell transfer 370 is connected to the screw 340 and the first shaft 360 and holds the battery cell. The battery cell transfer 370 moves to the tray 140 or the battery cell inspection device 120 according to the operation of the above-described configuration. However, each battery cell arranged within both is arranged with different widths (length on axes perpendicular to both the first axis and the second axis). Accordingly, the battery cell transfer 370 operates on an axis (x-axis, hereinafter referred to as the 'third axis') perpendicular to both the first axis and the second axis in order to hold the battery cell in the tray 140 or the battery cell inspection device 120. Each gripper (described later with reference to FIGS. 9 and 20 to 22) can be moved using an axis (referred to as an ‘axis’). Since the spacing between battery cells in the tray 140 or the battery cell inspection device 120 is determined, each gripper is disposed at the same spacing and grips each battery cell. A detailed description of the battery cell 370 will be described later with reference to FIGS. 9 and 20 to 22.

The fixing frame 380 is connected to each second rail 315 and fixes the screw 340, nut 350, first shaft 360, and battery cell transfer 370. The fixing frame 380 is connected to each second rail 315 between the second rails 315, on the second axis along the second rail 315, and a guide body 330 connected to the second rail 315. ) and moves along the first axis, allowing parts fixed to it to move with it.

4 and 5 are perspective views of a battery cell transfer according to an embodiment of the present invention.

Referring to FIGS. 4, 5A and 5B, the battery cell transfer 370 according to an embodiment of the present invention includes a frame 410, a first connection part 413, a second connection part 416, and rails 420 and 425. ), sliding groove 430, sliding coupling part 435, first link member connection part 440, second link member connection part 445, link member 450, battery cell gripper 460, motor 470 , including a screw 480, a nut 485, a first sensor 490, and a second sensor 495.

The frame 410 provides a space for each component in the battery cell transfer 370 to be located or operated, and is connected to the fixed frame 380 to support each component in the battery cell transfer 370.

Two frames 410 are positioned to face each other based on the fixed frame 380, so that two battery cell transfers 370, including the frame 410, can be arranged to face each other based on the fixed frame 380.

The first connection portion 413 is a structure that protrudes from the frame 410 toward the fixed frame 380 and is coupled with the screw 340 to move the battery cell transfer 370 on the first axis. The first connection portion 313 is implemented in a shape that can be combined with the screw 340, for example, a shape including a hollow inside (not shown) with a cross-sectional area equal to or larger than that of the screw 340. and is connected to the screw 340. The first connection portion 313 is coupled to the screw 340, and the operation of the screw 340 and the nut 350 allows the self 313 and the entire frame 410 to move accordingly. Accordingly, the first connection portion 313 moves the battery cell transfers 370 facing each other in a direction toward or away from each other.

The second connection part 316 is a structure that protrudes from the frame 410 toward the fixed frame 380 like the first connection part 313, and is combined with the first shaft 360 to reduce the weight of the battery cell transfer 370. We support together. The second connection portion 316 is coupled to the first shaft 360 and moves with it on the first shaft 360 as the first connection portion 313 moves. The second connection part 316 does not move with separate power, but moves passively by the movement of the first connection part 313. The second connection portion 316 is coupled to the first shaft 360 and supports the weight of the battery cell transfer 370 by distributing it with the first connection portion 313.

The rails 420 and 425 are formed on the frame 410 at positions corresponding to each other around the sliding groove 430 to prevent the battery cell gripper 460 from leaving and move it. The battery cell gripper 460 is connected to the rails 420 and 425 and a guide portion 916 (described later with reference to FIG. 9) and moves along the rails 420 and 425 along the third axis. That is, each gripper 460 moves in the same direction on the third axis and moves toward or away from each other.

However, not only one pair of rails is formed in the frame 410, but two or more rails may be formed. As described above, the guide portion 916 within the battery cell gripper 460 is connected to the rail and moves on the rail. However, in order to grip the battery cells placed in the tray 140, the gap between each battery cell gripper 460 must be significantly narrowed. The gap between each battery cell gripper 460 may need to be narrower than the guide portion 916. At this time, when only one pair of rails is formed in the frame 410, a problem occurs in which each battery cell gripper 460 does not have the required gap to grip the battery cells placed in the tray 140. . To solve this problem, two or more pairs of rails are formed within the frame 410, and adjacent battery cell grippers 460 are connected to different rails by guide portions 916 and move on the rails. Accordingly, any spacing may be provided between each battery cell gripper 460.

The sliding groove 430 is formed along the third axis within the frame 410 to allow the sliding coupling portion 435 to move within the frame 410 along the third axis.

The sliding coupler 435 moves closer to or farther away from each other within the sliding groove 430 by the operation of the motor 470, screw 480, and nut 485. The screw 480 is disposed on the third axis, and the nut 485 is disposed on the screw 480 and is coupled to a portion of the sliding coupling portion 435 and moves with it. Power is supplied from the motor 470 and the screw 480 rotates, and as the screw 480 rotates, the sliding coupling parts 435 move toward or away from each other along the sliding groove 430. A portion of the sliding coupling portion 435 may protrude from within the frame 410 (in the direction in which both frames face each other) to outside the frame 410 (in the direction in which both frames do not face each other) through the sliding groove 430. Let it happen. As the sliding coupling portion 435 protrudes, the link member can be connected to the protruding portion of the sliding coupling portion 435.

The first link member connection portion 440 has a hinge structure and fixes the link member 450 and the battery cell gripper 460 so that the link member 450 rotates. The first link member connection portion 440 at both ends close to the sliding coupling portion 435 is coupled to the link member 450 and the battery cell gripper 460, but is connected to the sliding coupling portion 435, and the sliding coupling portion 435 ) and transmits it to the link member 450 and the battery cell gripper 460.

Meanwhile, the second link member connection portion 445 has a hinge structure and is coupled to the link members 450a and 450b, respectively, so that the link member 450 rotates.

A pair of link members 450a and 450b is arranged to cross each other in an 'X', with a first link member connection portion 440 at the intersection area (center portion) of both members and a second link at each end of the link member 450. The member connections are coupled. A more detailed structure will be described with reference to FIGS. 6 to 8.

Figure 6 is an enlarged view of a link member and a link member connection portion according to an embodiment of the present invention, Figure 7 is a cross-sectional view of a first link member connection portion according to an embodiment of the present invention, and Figure 8 is an embodiment of the present invention. This is a cross-sectional view of the second link member connection according to an example.

Referring to FIGS. 6(a) and 6(b), the link member 450 and the link member connecting portions 440 and 445 are coupled, and the first link member connecting portion 440 is connected to the sliding coupling portion 435. When receiving an external force in the third axis direction, each link member 450 coupled to the first link member connection portion 440 is rotated. The link members 450 rotate so that they move away from each other (the angle between them increases) or get closer. For example, when the link members 450 coupled to the first link member connection portion 440 move away from each other, each link member connected to the second link member connection portion 445 becomes closer to each other (the angle between them becomes smaller). ). In this way, as the link members connected to the first link member connection portion 440 move away from each other and the link members connected to the second link member connection portion 445 become closer to each other, the sliding coupling portions 435 move to approach each other, and the first link member connection portion 435 moves closer to each other. The gap between each battery cell gripper 460 coupled to the link member connection portion 440 is reduced. Conversely, when the link members 450 coupled to the first link member connection portion 440 move closer to each other, each link member connected to the second link member connection portion 445 moves away from each other. In this way, as the link members connected to the first link member connection part 440 become closer to each other and the link members connected to the second link member connection part 445 move away from each other, the sliding coupling parts 435 move away from each other and the first link member connection part 435 moves away from each other. The gap between each battery cell gripper 460 coupled to the link member connection portion 440 increases. As the link member 450 and each link member connection portion 440 and 445 are coupled as described above, the gap between each battery cell gripper 460 is adjusted using the force transmitted from the sliding coupling portion 435.

At this time, since each link member 450 is crossed and coupled in an 'X' shape, the link member 450b and the frame 410 are disposed relatively close to the frame 410 in any of the link member connection portions 440 and 445. ) is distinguished from the link member 450a disposed far from the link member 450a. At this time, the link member 450b includes protrusions 610 at both ends that protrude in a direction toward the link member 450a (a direction away from the frame 410). A coupling hole 615 through which a coupling member (not shown) such as a screw can be coupled is implemented within the protrusion 610. A coupling member (not shown) is coupled to the coupling hole 615, and the coupling member (not shown) is in physical contact with the link member 450a connected to the second link member connection portion 445. Using this, the coupling member (not shown) coupled to the coupling hole 615 can adjust the degree to which the link member 450a rotates at the second link member connection portion 445. Even if the link member 450 and the link member connection parts 440 and 445 are manufactured under the same process conditions and in the same environment, microscopic tolerances inevitably occur. Because of this, even when the spacing between each battery cell gripper 460 is adjusted to be as close as possible (by moving the sliding coupling portions 435 to be as close to each other as possible), the spacing between each battery cell gripper 460 is within the above-mentioned tolerance. may vary slightly due to this. This may not be fatal if the gap between battery cells is above a certain level, as in the battery cell inspection device 120. However, if the gap between battery cells is below a certain level, such as the gap between battery cells placed in the tray 140, the above-mentioned error can be fatal. To solve this problem, the link member 450b includes a protrusion 610 and a coupling hole 615, and the coupling member (not shown) can be coupled to each coupling hole 615 at a preset depth. Here, the preset depth refers to a depth at which the link members coupled to the second link member connection portion 445 become closer to each other and the spacing between the first link member connection portions 440 is the same. The depth at which the coupling member (not shown) is coupled to the coupling hole 615 in each link member 450b may be different. Accordingly, even if tolerances occur in each configuration during the manufacturing process, this can be resolved by coupling a coupling member (not shown) to each coupling hole 615 to a preset depth.

Meanwhile, the first link member connection portion 440 is coupled to the link member 450 and the battery cell gripper 460 as shown in FIG. 7.

Referring to FIG. 7, the first link member connection portion 440 is connected to each link member 450a, 450b and bearings 710a to 710d, and a spacer 720 is disposed for each bearing (710a to 710d). The first link member connection portion 440 includes a bearing 710 and a spacer 720 to prevent any tolerance (gap) from occurring in the direction of the rotation axis.

On the other hand, the second link member connection portion 445 is coupled to each link member 450a and 450b as shown in FIG. 8.

Referring to FIG. 8, the second link member connection portion 445 is also connected to the link member 450 including a bearing 710, but instead of including a spacer, a stopper 810 is provided on the outermost side (the direction furthest from the frame). Including to prevent separation of the bearing 710.

As the link member connection portions 440 and 445 have different shapes, they have the following advantages. Since the first link member connection portion 440 couples not only the link member but also the battery cell gripper 460, it does not allow any movement in the direction of the rotation axis. However, if the bearings 710 continuously rotate and operate without any clearance, the bearings 710 may be worn or damaged.

On the other hand, since the second link member connection portion 445 has a gap in the axial direction, wear or damage like that of the first link member connection portion 440 is avoided, as well as the bearing 710 in the first link member connection portion 440. ) can buffer the decline in lifespan caused by fatigue.

Referring again to FIGS. 4 and 5, a plurality of battery cell grippers 460 (equal to the number of battery cells) are implemented to grip each battery cell. The specific structure of the battery cell gripper 460 will be described later with reference to FIGS. 9 and 20 to 22.

The motor 470, screw 480, and nut 485 perform the above-described operation and move the sliding coupling portion 435 in the sliding groove 430 on the third axis. As the sliding coupling part 435 moves, the link members 450 rotate together with the link member connection parts 440 and 445 to adjust the spacing between each battery cell gripper 460.

The first sensor 490 senses whether the battery cell gripper 460 has completely gripped the battery cell. The first sensor 490 determines whether the second frame 920 (described later with reference to FIGS. 9 and 20 to 22) has risen to a preset height or higher. The first sensors 490 are disposed at both ends of the frame 410, and one of them emits light at a preset height (in the second axis direction) based on when the second link frame 920 is lowest. One irradiates and the other receives light. When the battery cell gripper 460 grips the battery cell without any abnormality, the second link frame 920 descends along the slide rail 912 (described later with reference to FIG. 9) due to the weight of the battery cell. Unless there is a special problem, the second link frame 920 maintains the lowered state along the slide rail 912. On the other hand, when the battery cell gripper 460 collides with a battery cell or other component, the second link frame 920 may rise. The first sensor 490 detects the abnormal rise of the second link frame 920 within the battery cell gripper 460 and determines whether the battery cell gripper 460 has completely gripped the battery cell or whether an abnormality has occurred. .

Conversely, the second sensor 495 senses whether the battery cell gripper 460 is gripping the battery cell. Like the first sensor 490, the second sensor 495 is disposed at both ends of the frame 410, so that one emits light and the other receives light. However, unlike the first sensor 490, the second sensor 495 emits light at a position lower than the height at which the battery cell can be positioned in the second axis direction when the battery cell gripper 460 grips the battery cell. Send and receive. The second sensor 495 transmits and receives light at the corresponding height and senses whether the battery cell gripper 460 misses the battery cell being gripped.

Figure 9 is a diagram showing the configuration of a battery cell gripper according to an embodiment of the present invention.

Referring to FIG. 9, the battery cell gripper 460 according to an embodiment of the present invention includes first to third link frames 910 to 930, a slide rail 912, a link member fixing pin 914, and a guide portion. (916, 925), stopper support portion (918), actuator (940), cylinder (950), hinge shaft (960), bearing (965), grip portion (970), grip body (974), grip protrusion (978), It includes an angle detection sensor 980, an angle adjustment shaft 985, a sensor fixing hole 987, a first stopper 990, and a second stopper 995.

The first link frame 910 is connected to the rails 420 and 425 and supports the remaining components in the battery cell gripper 460. The first link frame 910 uses the guide portion 916 to connect the battery cell gripper 460 to the rails 420 and 425 and allows it to move along the third axis along the rail.

The third link frame 930 supports components capable of gripping battery cells within the battery cell gripper 460.

The second link frame 920 connects the first link frame 910 and the third link frame 930.

The slide rail 912 is formed within the first link frame 910 to enable the second link frame 920 to move up and down (on the second axis) along the guide portion 925. The second link frame 920 is usually in a lowered state due to its own weight or the weight of the battery cell when the grip unit 970 grips the battery cell.

However, when the grip portion 970 fails to grip the battery cell and collides with the battery cell or another component, the second link frame 920 is raised and lowered along the slide rail 912. If the slide rail 912 does not exist, when the grip portion 970 and other components collide, the impact force is transmitted to each component as is. This may cause damage to the grip portion 970 or other components (battery cells, etc.). The slide rail 912 prevents damage to each component in the above-mentioned situation.

As shown in FIG. 9C, the link member fixing pin 914 protrudes in the direction in which the first link member connection portion 440 is coupled to the battery cell gripper 460, and connects the first link member connection portion 440 to the battery cell. It is fixed to the gripper 460. Accordingly, the first link member connection portion 440 can couple the link member 450 and the battery cell gripper 460.

The guide portion 916 is connected to the rails 420 and 425 and moves the first link frame 910 and all components connected or formed thereon on the real (on the third axis).

The stopper support portion 918 is formed at the end farthest from the rails 420 and 425 of the first link frame 910 to provide a space for the stoppers 990 and 995 to be placed. The stopper support portion 918 arranges and supports the stoppers 990 and 995.

The actuator 940 is connected to the cylinder 950 and raises and lowers the cylinder 950 (on the second axis) to get closer to or farther away from the grip protrusion 978. The actuator 940 is implemented as a pneumatic cylinder, etc., and supplies power to enable the cylinder 950 connected to it to rise and fall.

The cylinder 950 is located within the third link frame 930 and moves up and down by receiving power from the actuator 940. The cylinder 950 is placed in a guide pipe (not shown) formed to have a cross-sectional area equal to or larger than its own cross-sectional area in the third link frame 930, and is raised and lowered without separation. Meanwhile, the end 955 of the cylinder 950 close to the grip protrusion 978 is implemented in a wedge shape. As the corresponding end 955 of the cylinder 950 is implemented in a wedge shape, the cylinder 950 can descend and naturally enter between the grip protrusions 978 without resistance.

At this time, the cylinder 950, especially the end 955 having a wedge shape, may be implemented as a heat-treated component. Conventionally, the cylinder 950 has been implemented with resin gel or a non-heat-treated component, but there was a problem of rapid wear due to frequent contact with grip protrusions, etc. To prevent this, the cylinder 950, especially the end 955, is made of heat-treated components to minimize wear.

The hinge axis 960 allows the grip body 974 to rotate around itself. The hinge axis 960 is located at one point of the grip body 974 and allows the grip body 974 to operate on the principle of a lever. That is, when the grip protrusions 978 are spread apart by the end 955 of the cylinder, the gap between the grip parts 970 narrows, and when the end 955 of the cylinder deviates and the gap between the grip protrusions 978 narrows, the gap between the grip parts 970 narrows. (970) The gap between them widens.

The bearing 965 and the grip body 974 are connected to the hinge axis 960, rotate around the hinge axis, and operate on the principle of a lever. There are two grip bodies 974, and a portion of the position where the hinge axis 960 is to be placed is etched in the shape of the hinge axis 960 so that the hinge axis 960 can be placed. Since two grip bodies 974 must be arranged with the hinge axis in the center, one grip body 974 is etched in a semicircular shape. A bearing 965 is placed in the etched area. A bearing 965 is disposed, and the grip body 974 rotates around the hinge axis 960, allowing the grip portion 970 and the grip protrusion 978 to operate on the principle of a lever.

Here, the bearing 965 may be implemented as two parts with a step, such as a flange bearing, where one end and the other end have different diameters. The other ends (relatively small diameter ends) of the two parts may be arranged to face each other, so that the bearing 965 (between one end of each part) has a portion of the grip body 974. A space where they can be placed is created. The distance between one end of each part in the bearing 965 is implemented to be equal to the thickness of a portion of the grip body 974, so that the bearing 965 and the grip body 974 can be prevented from being separated from each other. .

The grip portion 970 is formed with a preset area at one end of the grip body 974, moves away from or approaches each other according to the operation of the cylinder 950, and grips the battery cell.

The grip portion 970 is formed at one end of the grip body 974 with a preset area. As described above, two grip bodies 974 are implemented, and a grip portion 970 is also formed in each grip body 974. The grip portion 970 has a preset area, so that when a battery cell is located between the gaps between the grip portions 970, the battery cell can be gripped by the area. Accordingly, damage to the grip portion 970 or the battery cell that may occur while gripping at one point is prevented.

The grip protrusion 978 is formed in a protruding form on the other end of the grip body 974. The grip protrusion 978 protrudes in a cylindrical shape, allowing the end 955 of the cylinder to smoothly enter between the grip protrusions 978. When the end 955 of the cylinder enters between the grip protrusions 978, both 978 spread apart and the gap between the grip portions 970 decreases.

The angle detection sensor 980 detects whether a battery cell is disposed between the grip portions 970. The angle detection sensor 980 is disposed on each battery cell gripper 460, and is disposed to face each other to irradiate light from one to the other. However, the angle detection sensor 980 is not arranged on the same line, but is arranged diagonally in the '/' direction to radiate and receive light. When the angle detection sensor 980 irradiates light along the same line, there may be cases where it cannot detect the battery cell. To solve this problem, a pair of angle detection sensors 980 are arranged diagonally to detect battery cells.

The angle adjustment shaft 985 adjusts the light emission direction and light reception direction of the angle detection sensor 980. The angle adjustment shaft 985 is disposed adjacent to the angle detection sensor 980, and changes the light emission direction and light reception direction of the angle detection sensor 980 according to its rotation. In order to grip the battery cells in the tray 140, each battery cell gripper 460 moves to have a fairly narrow gap. Accordingly, light irradiated from the angle detection sensor 980 in one battery cell gripper 460 may travel to the angle detection sensor 980 in another adjacent battery cell gripper 460. The angle adjustment shaft 985 prevents the above-mentioned problems from occurring by adjusting the light emission and light reception directions of the angle detection sensor 980 within each battery cell gripper 460.

The sensor fixing hole 987 allows the angle detection sensor 980, whose angle is adjusted by the angle adjustment shaft 985, to be fixed. The sensor fixing hole 987 receives a fixing means (not shown, for example, a fixing bar, etc.) into its interior, so that the angle adjustment shaft 985 can no longer adjust the tilting (light emission direction and direction) of the angle detection sensor 980. Adjustment of the light receiving direction) does not proceed.

The first stopper 990 is disposed on the lower surface of the stopper support part 918 facing the third link frame 930 to prevent damage due to collision between the cylinder 950 and the stopper support part 918. The cylinder 950 is powered by the actuator 940 and can rise to the stopper support 918. At this time, if a separate configuration does not exist, the cylinder 950 and the stopper support portion 918 may collide, and one or both may be damaged. To prevent this, the first stopper 990 is disposed on the above-described surface of the stopper support portion 918 to prevent damage to both 918 and 950.

The second stopper 995 is disposed between the stopper support 918 and the second link frame 920 on the upper surface of the stopper support 918 (opposite the surface on which the first stopper is disposed), forming a second link frame ( It prevents collision between 920 and the stopper support part 918 and reduces the lateral moment generated in the guide part 916 due to movement of the battery cell gripper 460.

The second stopper 995 is disposed at the above-mentioned position and, like the first stopper 990, prevents damage to the second link frame 920 and the support portion 918 due to collision.

The second stopper 995 reduces the lateral moment occurring in the guide portion 916. The guide portion 916 has characteristics that make it vulnerable to lateral moments that inevitably occur. In particular, because the weight of all components of the battery cell gripper 460 is applied to the guide portion 916, the guide portion 916 becomes vulnerable to lateral moments (moments in the first axis direction and the third axis direction). . To prevent this, the stopper support portion 918 and the second stopper 995 have the structure shown in FIG. 10.

Figure 10 is an enlarged cross-sectional view of the second stopper and the stopper support portion according to an embodiment of the present invention.

Referring to FIG. 10, the second stopper 995 includes a groove 1010 recessed toward its center on a surface facing the stopper support portion 918. Meanwhile, the stopper support portion 918 includes a protrusion 1020 that protrudes toward the second stopper 995 in a shape corresponding to the groove 1010 on a surface facing the second stopper 995. In this way, when the second stopper 995 is disposed on the stopper support portion 918, the groove 1010 and the protrusion 1020 are additionally combined. Accordingly, the guide portion 916 becomes more robust against moments applied to the first axis (x-axis direction in FIG. 10) and the third axis (y-axis direction in FIG. 10) by combining the two (1010 and 1020). , (unnecessary and unintended) movement of the second link frame 920 in the corresponding axis can be minimized.

At this time, the protrusion 1020 may be implemented as a headless bolt, and a screw thread within the stopper support portion 918 may be implemented. The protrusion 1020 is coupled to the stopper support 918 by screwing, and the degree of protrusion can be adjusted. Accordingly, the bonding strength (fastening force) of the protrusion 1020 and the stopper support portion 918 can be improved, and the degree of protrusion of the protrusion 1020 can also be adjusted as needed.

Meanwhile, in FIG. 10, the second stopper 995 is shown to have a groove 1010 and the stopper support part 918 is shown to have a protrusion 1020, but the present invention is not necessarily limited thereto. The groove 1010 is implemented in the stopper support part 918, and the protrusion 1020 is implemented in the second stopper 995, and may have the above-described features.

FIG. 20 is a diagram showing the configuration of a battery cell gripper according to another embodiment of the present invention, and FIG. 21 is an enlarged view of a portion (A) of the battery cell gripper according to another embodiment of the present invention.

20 and 21, the battery cell gripper 460 according to another embodiment of the present invention includes first to third link frames 910 to 930, a slide rail (not shown), and a link member fixing pin (not shown). (see), guide part (not shown), stopper support part (not shown), actuator (940), plate detection sensor (2010, 2015), plate fixing unit (2020), plate (2030), guide groove (2035), LM Guide (2040), hinge axis (960), bearing (965), grip part (970), grip protrusion (2050), grip body (2060), angle detection sensor (980), angle adjustment shaft (985), first stopper (990) and a second stopper (995). Here, the first to third link frames 910 to 930, a slide rail (not shown), a link member fixing pin (not shown), a guide unit (not shown), a stopper support unit (not shown), an actuator 940, The hinge shaft 960, bearing 965, grip portion 970, angle detection sensor 980, angle adjustment shaft 985, first stopper 990, and second stopper 995 are one embodiment of the present invention. Since the same configuration and the same operation are performed in the battery cell gripper 460 according to , detailed description will be omitted.

The plate detection sensors 2010 and 2015 detect the motion of the actuator 940 and detect the movement of the plate 2030. The plate 2030 is raised or lowered according to the operation of the actuator 940. The plate detection sensor (2010, 2015) detects the actuator 940 that raises or lowers the plate 2030 and detects whether the plate 2030 is raised or lowered. According to the physical combination of the grip protrusion 2050 and the guide groove 2035 in the plate 2030, the grip portion 970 physically moves along with the movement of the plate 2030. In other words, detecting the movement of the plate 2030 is equivalent to detecting the movement of the grip portion 970. If the gap between the grip parts 970 cannot be narrowed due to foreign matter being located between the grip parts 970, movement of the plate material 2030 is also restricted. The plate detection sensors 2010 and 2015 detect the movement of the plate 2030 and determine whether the gap between the grip parts 970 cannot be narrowed or widened due to foreign substances or the like.

The plate fixing unit 2020 transmits the power transmitted from the actuator 940 to the plate 2030. The plate fixing part 2020 is coupled to the actuator 940 on one end and the plate 2030 on the other end, and transmits the power transmitted from the actuator 940 to the plate 2030. Accordingly, the plate fixing part 2020 and the plate 2030 are raised or lowered according to the power provided by the actuator 940.

The plate 2030 is raised and lowered by the actuator 940 and the gap between the grip parts 970 is adjusted.

The plate 2030 includes at least two guide grooves 2035 at an end opposite to the end where the plate fixing part 2020 is located. Each guide groove 2035 is formed at an end of the plate 2030 in a direction perpendicular to the direction of movement of the plate 2030, and is formed in the form of a diagonal line with the ends of each of the guide grooves 2030 approaching each other. A grip protrusion (2050) is disposed within the guide groove (2035). When the plate 2030 moves up and down, the grip protrusion 2050 moves along the guide groove 2035, and the grip body 974 and the grip portion 970 rotate by the hinge axis 960. Accordingly, the distance between the grip portions 970 becomes closer or farther apart. In this way, the plate 2030 includes a guide groove 2035, and by placing the grip protrusion 2050 in the guide groove 2035, the grip portion 970, etc. are rotated.

The LM guide 2040 is disposed between the third link frame 930 and the plate 2030 to assist in raising and lowering the plate 2030. The LM guide 2040 assists in raising and lowering the plate 2030 at the above-mentioned position and prevents the plate 2030 from being separated from the moving axis.

The grip protrusion 2050 is formed in a protruding form on the other end of the grip body 974 (the end farthest from the grip part), or is protruding on the other end of the grip body 974 and is connected (to the grip body) with a guide groove. (2035). The grip protrusion 2050 includes a fixed shaft 2054 and a rotating roller 2058 disposed outside the fixed shaft 2054. The rotating roller 2058 contacts one surface of the guide groove 2035, and moves the guide groove 2035 as the plate material 2030 rises and falls. As described above, the guide groove 2035 is formed in a diagonal direction and the ends of each end are close to each other, so even if the plate 2030 is raised or lowered, the distance between the grip projections 2050 is maintained constant. , the relative positions of each grip protrusion 2050 before and after raising and lowering the plate 2030 change. Accordingly, the grip protrusion 2050 moves along the guide groove 2035, and the grip body 974 and the grip portion 970 rotate by the hinge axis 960.

The grip body 2060 includes a grip portion 970 formed or connected to a preset area at one end, and a grip protrusion 2050 formed or connected to a protruding shape at the other end. The grip body 2060 has a thickness equal to the space formed within the bearing 965, as described above, except for the grip portion 970 and the grip protrusion 2050. Accordingly, the grip bodies 2060 have a form in which they are stacked top and bottom. Accordingly, the grip protrusions 2050 also have gaps in the upper and lower directions.

Meanwhile, the grip portion 970 may include a silicone coating surface 975 on surfaces facing each other. The silicone coating surface 975 is formed by coating a silicone component on the surfaces facing each other between the grip parts 970, and can improve the gripping force of the grip part 970 against the battery cell by improving friction. Conventionally, silicone was implemented in a form that adhered to the above-mentioned surface of the grip part, but if a certain period of time passes, the silicone may separate from the grip part and cause a problem of falling into the battery, etc. To prevent this, the grip part 970 is made of silicone. It may include a coating surface (975).

Figure 22 is a diagram showing the configuration of a battery cell gripper according to another embodiment of the present invention.

Referring to FIG. 22, the battery cell gripper 460 according to another embodiment of the present invention includes first to third link frames 910 to 930, a slide rail (not shown), and a link member fixing pin (not shown). ), guide part (not shown), stopper support part (not shown), actuator 940, cylinder 950, grip protrusion guiding plate (2210), guide groove (2215), hinge shaft (960), bearing (965) ), grip part 970, grip protrusion 2230, grip body 2060, grip protrusion fixing part 2220, angle detection sensor 980, angle adjustment shaft 985, first stopper 990 and second Includes stopper (995). Here, the first to third link frames 910 to 930, a slide rail (not shown), a link member fixing pin (not shown), a guide unit (not shown), a stopper support unit (not shown), an actuator 940, The hinge axis 960, bearing 965, grip part 970, grip body 2060, angle detection sensor 980, angle adjustment shaft 985, first stopper 990, and second stopper 995 are Since the same configuration and the same operation are performed in the battery cell gripper 460 according to one embodiment of the present invention or the battery cell gripper 460 according to another embodiment of the present invention, detailed description will be omitted.

The grip protrusion guiding plate 2210 is connected to the end (close to the grip protrusion) of the cylinder 950 and rotates the grip portion 970 according to the operation of the cylinder 950.

The grip protrusion guiding plate 2210 is connected to the above-mentioned end of the cylinder 950 and moves up and down along with the up and down of the cylinder 950.

At this time, the grip protrusion guiding plate 2210 includes at least two guide grooves 2215. The guide grooves 2215 are each formed in the same direction as the moving direction of the grip protrusion guiding plate 2210, and are formed in the form of a diagonal line where one end of each of the guide grooves 2215 approaches each other. The grip protrusion 2230 is disposed in the guide groove 2215, and the grip portion 970 rotates as described above.

Meanwhile, a grip protrusion fixing part 2220 is formed at the other end of the grip body 2060, and a grip protrusion 2230 is formed or connected to the grip protrusion fixing part 2220 in a protruding form. The grip protrusion fixing part 2220 formed in the grip body 2060 disposed at the bottom protrudes toward the upper part, and the grip protrusion fixing part 2220 formed in the grip body 2060 disposed at the top protrudes toward the bottom. . Accordingly, the surfaces of the grip protrusion fixing part 2220 and the grip protrusion guiding plate 2210 have the same area.

As the grip protrusion fixing portion 2220 is formed, the grip protrusions 2230 may be positioned at the same height in the direction in which the grip protrusion guiding plate 2210 moves. The grip protrusions 2230 are formed at the same height and move closer or farther away from each other along the guide groove 2215 to rotate the grip portion 970.

Figure 11 is a perspective view of a battery cell inspection device according to an embodiment of the present invention.

Referring to FIG. 11, the battery cell inspection device 120 according to an embodiment of the present invention includes a pressing member 1110, a jig press plate 1120, a pressing plate 1125, a jig plate 1130, and a battery cell fixing. Module 1140, first rail 1150, second rail 1155, frame 1160, first fixing plate 1164, second fixing plate 1168, pressure sensor 1170, support plate 1180 ), an elastic member 1185, and a guide cylinder 1190.

The pressing member 1110 receives power from the outside and presses the jig press plate 1120. For example, the pressing member 1110 may be implemented in a configuration that receives rotational force, such as a jack screw, and converts it into linear reciprocating motion, or may be implemented in a configuration that receives power and performs linear reciprocating motion. It may be possible.

The jig press plate 1120 receives pressure from the pressing member 1110 and applies pressure to each jig plate 1140 and the battery cells disposed between the jig plates. The jig press plate 1120 has the structure shown in FIG. 12.

Figure 12 is a perspective view of a jig press plate according to an embodiment of the present invention, and Figure 13 is a view showing a portion where pressure is applied to the jig plate by the jig press plate according to an embodiment of the present invention.

Referring to FIG. 12, the jig press plate 1120 according to an embodiment of the present invention includes a pressing portion 1210 and a wing portion 1220.

The jig press plate 1120 is implemented in a rectangular shape where the length in the longitudinal direction is relatively longer than the length in the height direction.

The pressing unit 1210 is physically connected to the pressing member 1110 and receives pressure from the pressing member 1110 to press other members.

The wing portion 1220 is a portion extending in each longitudinal direction from the pressing portion 1210 and distributes the pressure transmitted by the pressing member 1110. By the presence of the wings 1220 to distribute pressure, the jig press plate 1120 can apply uniform pressure to the battery cells disposed between the jig press plate 1120 and the jig plate. This is supported by Figure 13.

Referring to FIG. 13(a), when only the pressurizing portion is present, pressure is not applied evenly to the area 1310 corresponding to the battery cell in the jig plate 1130 (simplified representation in FIG. 13), but is applied to the center. You can see that pressure is concentrated only on one part.

On the other hand, referring to FIG. 13(b), it can be seen that pressure is applied evenly to the area 1310 corresponding to the battery cell due to the presence of the wing portion 1220.

Referring again to FIG. 12, the wing portion 1220 extends only in the longitudinal direction. If the wing portion 1220 extends in the height direction rather than the length direction, the pressure is less distributed in the longitudinal direction, resulting in a problem in which the pressure is not evenly distributed. Accordingly, the wing portion 1220 extends from the pressing portion 1210 only in the longitudinal direction.

In addition, the wing portion 1220 extends from the pressing portion 1210 and is implemented as a structure having at least an inclined surface (triangle). The wing portion 1220 has a predetermined length of the surface in contact with the jig plate and is implemented in at least an inclined plane shape. The wing portion 1220 may be implemented in a fan-shaped or square shape rather than an inclined plane, under the premise that the length of the surface in contact with the jig plate has a preset length.

Referring again to FIG. 11, the pressure plate 1125 is disposed on the opposite side of the jig press plate 1120 and receives the pressure transmitted through the jig press plate 1120 and the jig plate 1130.

The number of jig plates 1130 is one more than the number of battery cells to be tested at once, and the battery cells are placed between them and pressed. The jig plate 1130 and the battery cell disposed between the jig plate 1130 are shown in FIG. 14.

Figure 14 is a perspective view of a jig plate according to an embodiment of the present invention.

Referring to FIG. 14, the jig plate 1130 according to an embodiment of the present invention includes a jig frame 1410, a guide hole 1414, a rail 1418, a pad 1420, a pad fixing plate 1430, and a support sheet. It includes a height adjustment unit 1440, a support sheet fixing unit 1450, and a support sheet support unit 1460.

The jig frame 1410 provides a space for other components within the jig plate 1130 to be placed or fixed. The jig frame 1410 has a certain area and width (length in the direction in which the pressing member applies pressure in FIG. 11), so that each component can be placed and fixed.

The guide hole 1414 is formed as a through hole in the jig frame 1410 to allow the guide cylinder 1190 to penetrate the jig plate 1130. As the guide cylinder 1190 penetrates the guide hole 1414, the jig plate 1130 moves along the guide cylinder 1190 and along the axis formed by the cylinder (third axis).

The rail 1418 is formed along the jig frame 1410 at the lowest end of the jig frame 1410, and moves the battery cell fixing module 1140 coupled to the rail 1418 in the direction of the rail 1418. Since the jig plate 1130 including the jig frame 1410 must pressurize the battery cells seated thereon, it is arranged to face the first axis and moves on the third axis to pressurize the battery cells. Rails 1418 are formed toward the first axis at the above-described positions. Accordingly, the battery cell fixing module 1140 coupled to the rail 1418 moves along the rail 1418 along the first axis and may move toward or away from the battery cell.

The pad 1420 is disposed on a side facing the adjacent jig plate 1130 within the jig frame 1410 to prevent damage to the battery cell when pressing the battery cell. The pad 1420 is made of a material that is elastic or has a hardness less than a preset standard (not hard), so as to cushion the impact when in contact with a battery cell and prevent damage due to contact.

The pad fixing plate 1430 fixes the pad 1420 to the above-described surface of the jig frame 1410. The pad fixing plate 1430 is fixed to the jig frame 1410 by a fixing part 1435. Meanwhile, the pad fixing plate 1430 fixes the pad at one part (eg, the center). For example, the pad fixing plate 1430 fixes the pad in various ways, such as including a structure in which a pad can be placed and coupled to one part or being engraved in the shape of a pad.

The support sheet height adjustment unit 1440, the support sheet fixing unit 1450, and the support sheet support unit 1460 are located on the upper surface of the jig frame 1410, and are provided between the jig plate 1130 and the jig plate 1130. 1470) can be placed, and the height of the support sheet is adjusted.

As shown in FIG. 14(b), a support sheet 1470 is disposed between the jig plate 1130 and the jig plate 1130 so that the battery cell 1400 can be placed thereon. Since the battery cell 1400 cannot be placed in the air, the support sheet 1470 is fixed to each jig plate 1130 by the support sheet fixing part 1450 and the support sheet support part 1460. Additionally, there may be cases where the battery cell is pressurized and leakage occurs from the battery cell. In this case, if the support sheet 1470 does not exist, the leaked liquid may fall into the equipment of the battery cell inspection device 1100 and cause various adverse effects. Since the support sheet 1470 is fixed to each jig plate 1130, the battery cell 1400 can be placed on the support sheet 1470 between each jig plate 1130 and the above-described problem can be prevented. .

At this time, the support sheet fixing part 1450 and the support sheet support part 1460 fix the support sheet 1470, and the support sheet height adjusting part 1440 is the support sheet fixing part 1450 that fixes the support sheet 1470. Adjust the height of the support sheet 1470 by adjusting the height. Since the size of the battery cell may vary depending on the type, the height of the battery cell needs to be adjusted in order for the battery cell fixing module 1140 to easily fix the battery cell. To this end, the support sheet height adjustment unit 1440 adjusts the height of the support sheet 1470 by adjusting the height of the support sheet fixing part 1450. The specific configuration of each component (1440 to 1460) is shown in FIGS. 15 and 16.

FIG. 15 is a diagram showing the configuration of a support sheet height adjustment unit and a fixing unit according to an embodiment of the present invention, and FIG. 16 is a diagram showing the configuration of a support sheet support unit according to an embodiment of the present invention.

In a state where the support sheet fixing part 1450 and the support sheet support part 1460 are separated, the support sheet 1470 is disposed on the support sheet fixing part 1450 (in the direction in which the support sheet support part is located). Afterwards, the support sheet support part 1460 is coupled to the support sheet fixing part 1450 and fixes the support sheet 1470. Meanwhile, while the support sheet 1470 is fixed by the support sheet fixing part 1450 and the support sheet support part 1460, the support sheet height adjusting part 1440 adjusts the height of the support sheet fixing part 1450 and adjusts the height of the support sheet fixing part 1450. Adjust the height of the fixed support sheet 1470.

Referring to Figure 15, the support sheet height adjustment unit 1440 according to an embodiment of the present invention includes a body 1510, a fixing part 1520, a nut 1530, and a screw 1540, and a support sheet fixing part. 1450 includes a frame 1550, a coupling hole 1560, and a guide member 1570.

The body 1510 includes a tapered shape on one side facing the frame 1550. Accordingly, the body 1510 moves to the lower part of the frame 1550 according to the movement of the nut 1530 and pushes up the frame 1550, or moves away from the frame 1550 and lowers the frame 1550.

The body 1510 includes a through hole (not shown) or a groove (not shown) at an end far from the support sheet fixing part 1450 in the longitudinal direction of the body 1510, so that the screw 1540 flows into the body 1510. make it possible

The body 1510 includes a guide hole 1515 on one side facing the support sheet fixing part 1450, so that the guide member 1570 in the support sheet fixing part 1450 can be positioned in the guide hole 1515. Let it happen. As the guide member 1570 is located in the guide hole 1515, when the body 1510 moves toward the frame 1550, it can move straight to the lower part of the frame 1550.

The fixing part 1520 fixes the screw 1540 and the body 1510 connected to the screw 1540 to the jig frame 1410. The fixing part 1520 prevents the screw 1540 and the body 1510 connected to the screw 1540 from being separated. The fixing part 1520 includes a through hole therein and is disposed to allow the screw 1540 to pass therethrough. Accordingly, the screw 1540 and the body 1510 connected thereto are prevented from being separated, but the rotation of the screw 1540 is not affected.

The nut 1530 rotates along the screw 1540 and moves the body 1510. Nut 1530 rotates along screw 1540, moving body 1510 closer to or away from frame 1550.

The frame 1550 arranges the coupling hole 1560 and the guide member 1570 at appropriate positions, and is raised or lowered by the body 1510. The frame 1550 also includes a tapered shape on the surface facing the body 1510. Accordingly, the body 1510 can smoothly flow into the lower part of the frame 1550 without any additional resistance, thereby raising the frame 1550, or it can move away from the frame 1550 and lower the frame 1550.

The coupling hole 1560 allows the fastening means 1640 of the support sheet support part to be fastened. The fastening means 1640 is fastened to the coupling hole 1560, and the support sheet support part 1460 is coupled to the support sheet fixing part 1450. The coupling holes 1560 may be formed at preset intervals on the frame 1550 to allow the fastening means 1640 of the support sheet support portion to be fastened to an appropriate position depending on the size of the support sheet.

The guide member 1570 is disposed on the frame 1550, protrudes in the direction of the body 1510 of the support sheet height adjustment unit 1440, and a portion of the guide member 1570 is located in the guide hole 1515. Since the guide member 1570 is located in the guide hole 1515, the support sheet height adjustment unit 1440 moves straight toward or away from the support sheet fixing unit 1450 along the axis of the guide hole 1515. You can move.

Referring to FIG. 16, the support sheet support part 1460 includes a cover part 1610, a protrusion 1620, a support means 1630, and a fastening means 1640. FIG. 16(a) is a view when the cover portion 1610 within the support sheet support 1460 is present, and FIG. 16(b) is a view when the cover portion 1610 within the support sheet support 1460 is removed. .

The cover portion 1610 allows each component within the support sheet support portion 1460 to be formed or positioned.

A protrusion 1620 is formed in a direction away from the cover portion 1610 and the support sheet fixing portion 1450. When an administrator or a separate device separates the support sheet support part 1460 from the support sheet fixing part 1450, an external force for separation can be more easily applied to the cover part 1610.

The support means 1630 is combined with the frame 1550 of the support sheet fixing part 1450 to fix the support sheet 1470. For example, the support means 1630 is made of a magnetic material (e.g., a magnet), and the frame 1550 is made of metal, so that it can be easily supported between the support sheet fixing part 1450 and the support sheet support part 1460. The sheet 1470 can be supported.

The support sheet support portion 1460 may further include fastening means 1640. The fastening means 1640 is fastened to the coupling hole 1560 of the support sheet fixing part 1450 and fixes the support sheet 1470 more firmly. If it is determined that it is difficult to secure the support sheet 1470 on which the battery cells are arranged using only the support means 1630, an additional fastening means 1640 may be included. Since the fastening means 1640 is physically fastened to the coupling hole 1560, it has a greater fastening force than the support means 1630. Accordingly, the fastening means 1640 is fastened to the coupling hole 1560, and the support sheet 1470 can be supported more reliably.

Referring again to FIG. 11, the battery cell fixing module 1140 moves on the third axis and the first axis, fixes the battery cell disposed between the jig plates 1130, and pressurizes the battery cell. Two battery cell fixing modules 1140 are arranged facing each other to fix the battery cells, especially the electrodes within the battery cells, from both sides. The specific configuration of the battery cell fixing module 1140 is shown in FIGS. 17 and 18.

FIG. 17 is a diagram showing the configuration of a battery cell fixing module according to an embodiment of the present invention, and FIG. 18 is a diagram showing the configuration of an electrode connection part within the battery cell fixing module according to an embodiment of the present invention.

Referring to FIG. 17, the battery cell fixing module 1140 according to an embodiment of the present invention includes first to third frames 1710 to 1718, an electrode connection part 1720, a battery cell detection sensor 1730, and a stopper ( 1740), bush 1750, retaining ring 1755, shaft 1760, actuator 1770, lead 1775, and guide portions 1780 and 1785.

The first frame 1710 provides a space for the electrode connection part 1720 and the battery cell detection sensor 1730 to be placed, and is connected to the second frame 1714.

The electrode connection portion 1720 is electrically connected to the electrode of the battery cell. When the battery cell fixing module 1140 moves closer to the battery cell, particularly the electrode of the battery cell, the electrode connection portion 1720 is electrically connected to the battery cell. The electrode connection portion 1720 is electrically connected to the electrode of the battery cell, and allows it to be determined whether the battery cell has any electrical characteristics in a pressurized state.

Meanwhile, the electrode connection portion 1720 structurally allows the battery cell to proceed smoothly when approaching toward it, but minimizes deviation in other directions. The specific structure of the electrode connection portion 1720 will be described later with reference to FIG. 18.

The battery cell detection sensor 1730 senses whether a battery cell is approaching the electrode connection portion 1720. The battery cell detection sensor 1730 may include a protrusion 1735 that protrudes from the bottom of the electrode connection part 1720 toward the electrode connection part 1720. The protrusions 1735 are implemented in two pieces, and are implemented with a gap so that they can be positioned between the battery cells 1735 when they are electrically connected to the electrode connection part 1720. One protrusion 1735a transmits light, and the other protrusion 1735b receives light to detect whether a battery cell has entered the electrode connection portion 1720.

The battery cell detection sensor 1730 includes a guide portion 1738 and is connected to the first frame 1710. The first frame 1910 includes a rail (not shown) on the surface facing the battery cell detection sensor 1730, and the guide unit 1738 moves up and down along the rail (not shown). Accordingly, the battery cell detection sensor 1730 may move closer to or farther away from the electrode connection portion 1720. Accordingly, depending on the position where the electrode of the battery cell approaches the electrode connection part 1720, the battery cell detection sensor 1730 can prevent collision with the electrode of the battery cell.

The second frame 1714 is connected to the first frame 1710 and allows the first frame 1710 to move along the third axis of the battery cell. The second frame 1714 is implemented to surround the first frame 1710. The first frame 1710 and the second frame 1714 include a plurality of through holes (not shown) through which the shafts 1760 can pass, allowing the plurality of shafts 1760 to pass through them. The shaft 1760 penetrates and the bush 1750 and the retaining ring 1755 are coupled. Accordingly, the first frame 1710 only moves along the shaft 1760 by the second frame 1714, and may be fixed and not move other than the movement described above.

The stopper 1740 is disposed at the end (away from the third frame) of the shaft 1760 to prevent the bush 1750 and the retaining ring 1755 from being separated.

The bush 1750 contacts the shaft 1760 on the inside and the through hole (not shown) of each frame 1710 and 1714 on the outside, and moves each frame 1710 and 1714 along the shaft 1760. . When the lead 1775 is in a movable state, the bush 1750 moves along the shaft 1760. Mainly, the bush 1750 moves in a direction away from the stopper 1740 and moves each frame 1710 and 1714 together.

The fixing ring 1755 is disposed on each outer surface (the surface not facing the first frame) of the second frame 1714, especially around the through hole (not shown), so that the second frame 1714 is connected to the bush 1750. ) to prevent deviation. The fixing ring 1755 is disposed around the through hole (not shown) in each outer surface of the second frame 1714, so that the second frame 1714 moves in a direction closer to or away from the stopper 1740. Prevents the bush (1750) from leaving.

Shaft 1760 allows bush 1750 to move along it. The shaft 1760 is disposed on the third axis, moves on the third axis of the battery cell, and when an external force is applied to the first frame 1710, the first frame 1710 and the second frame connected thereto ( 1714) can also move on the shaft 1760.

The actuator 1770 and the lead 1775 control the movement of the second frame 1714 moving along the shaft 1760 by the bush 1750.

The actuator 1770 is located within the third frame 1718 and through the third frame 1718 and moves the lead 1775 on the third axis. The lead 1775 may be moved away from the second frame 1714 or brought closer to the second frame 1714 by the actuator 1770. When the lead 1775 approaches the second frame 1714, the lead 1775 moves in the direction of the stopper 1740. When the lead 1775 approaches the second frame 1714 and comes into contact with it, the second frame 1714 is no longer able to move away from the stopper 1740 due to the lead 1775. In particular, when the lead 1775 contacts the second frame 1714 in a situation where the second frame 1714 is located closest to the stopper 1740, the second frame 1714 is moved by the lead 1775. You won't be able to do it. Conversely, when the lead 1775 moves in a direction away from the stopper 1740 and away from the second frame 1714, the second frame 1714 may move toward the lead 1775 up to the position of the lead 1775. . Accordingly, the second frame 1714 and the first frame 1710 can move on the third axis. In this way, the actuator 1770 and the lead 1775 adjust whether and where the second frame 1714 moves on the third axis.

The third frame 1718 is disposed to face the first frame 1710 and the second frame 1714 by a preset distance away from the first frame 1710 and the second frame 1714 . The third frame 1718 includes a through hole (not shown) or groove (not shown) having a cross-sectional area of the same size as the cross-sectional area of the shaft 1760, and the through hole (not shown) or groove (not shown) is used to form the shaft. (1760) to allow part of it to flow in. The shaft 1760 flows into a through hole (not shown) or a groove (not shown), and the third frame 1718 and the first frame 1710/second frame 1714 are physically connected by the shaft 1760. connected. Accordingly, as the third frame 1718 moves, the first frame 1710 and the second frame 1714 also move together.

The third frame 1718 supports the actuator 1770 and each guide part 1780 and 1785 and provides a space where they can be placed.

The first guide portion 1780 is disposed at the end of the third frame 1718 facing the jig plate 1130 and is connected to the rail 1418 of the jig plate 1130. Accordingly, the first guide unit 1780 moves on the rail 1418. As the first guide portion 1780 moves along the rail 1418, the third frame 1718 and the first and second frames 1710 and 1714 connected thereto all move along the rail 1418. You can. All frames within the battery cell fixing module 1140 can move along the rail 1418 and move closer to or farther away from the battery cell 1400 by the first guide unit 1780.

The second guide portion 1785 is disposed at the end farthest from the jig plate 1130 of the third frame 1718 and is connected to the first rail 1150 on the frame 1160. Accordingly, the second guide unit 1785 moves on the first rail 1150. As the second guide unit 1785 moves along the first rail 1150, all frames in the battery cell fixing module 1140 move along the rail 1418 and each battery cell fixing module 1140 is connected to each other. You can move it closer or further away.

Referring again to FIG. 11, the first rail 1150 is disposed on the frame 1160 along the third axis, allowing each battery cell fixing module to move closer to or farther away from each other.

The second rail 1155 is disposed on the first axis below the frame 1160 and moves each frame 1160 in a direction (first axis) closer to or farther away from each other. The second rail 1155 is disposed on the first axis at the bottom of the frame 1160, and the frame 1160 includes a guide portion (not shown) at the bottom and is connected to the second rail 1155. Accordingly, the frame 1160 moves along the first axis along the second rail 1155, and each frame 1160 moves closer to or farther away from each other.

The frame 1160 supports each battery cell fixing module 1140 and the first rail 1150 and provides a space for them to be placed. The frames 1160 may move closer or farther away from each other along the second rail 1155, and the battery cell fixing modules 1140 may move away from or closer to each other along the rail 1418.

The first fixing plate 1164 fixes the pressing member 1110 so that the pressing member 1110 can be coupled to the jig press plate 1120 without separation and fully press the jig press plate 1120.

The second fixing plate 1168 fixes the pressure sensor 1170 and maintains a gap between itself and the support plate 1180 at which the pressure sensor 1170 can be placed.

The pressure sensor 1170 senses the pressure applied to the support plate 1180. The pressure sensor 1170 senses the pressure applied to the support plate 1180 between the second fixing plate 1168 and the support plate 1180, and senses what size of pressure is applied to each battery cell. The jig press plate 1120 is pressed by the pressing member 1110 and pressurizes each jig plate 1130, and the jig plate 1130 and the battery cell disposed between it are pressed to the adjacent jig plate 1130 by pressure. Pressure is transmitted and all are compressed in the direction of the support plate (1180). Finally, pressure to reduce the gap between the jig plates 1130 is transmitted to the support plate 1180, and the pressure sensor 1170 senses this.

The elastic member 1185 transfers the pressure transmitted to the pressure plate 1125 to the support plate 1180 and prevents the pressure plate 1125 from colliding with the support plate 1180 under pressure.

The guide cylinder 1190 is disposed to penetrate the guide hole 1414 of each jig plate 1130, and allows the jig plates 1130 to move along the axis on which the guide cylinder 1190 is disposed. Both ends of the guide cylinder 1190 are fixed to each of the fixing plates 1164 and 1168, and are disposed on the third axis through the guide hole 1414 of each jig plate 1130. Accordingly, when the jig plate 1130 is pressured by the jig press plate 1120, it can move along the guide cylinder 1190.

Figure 18 is a diagram showing the configuration of an electrode connection part in a battery cell fixing module according to an embodiment of the present invention.

Referring to FIG. 18A, the electrode connection part 1720 according to the first embodiment of the present invention includes a cell guide 1810, a probe pin 1820, a probe pin guide 1830, and a probe pin fixing part 1840. .

Two cell guides 1810 are disposed on the first frame 1710 with a gap equal to or greater than the thickness of the battery cell, particularly the battery cell electrode, so that the battery cell electrode can be introduced between them. In particular, the cell guide 1810 includes a tapered surface 1815 on the opposite side of the end farthest from the first frame 1710. The tapered surfaces 1815 are formed so that the inclined surfaces face each other, allowing the battery cell electrodes to enter between the cell guides 1810 more easily.

The probe pin 1820 is disposed at the top and bottom of the cell guide 1810 with the cell guide 1810 in between, and is electrically connected to the battery cell electrode flowing in along the cell guide 1810. The probe pin 1820 has a length that allows the pin head to protrude from the end of the probe pin guide 1830, and is disposed within the probe pin guide 1830. The probe pins 1820 are disposed at the top and bottom and ensure stable contact with the battery cell electrodes without being biased in one direction.

The probe pin fixing unit 1840 is disposed within the first frame 1710 with the cell guide 1810 interposed therebetween, and the probe pin guide 1830 is fixed within the probe pin fixing unit 1840. An elastic member (not shown), for example, a spring, is disposed within the probe pin guide 1830 to enable the probe pin 1820 to reciprocate. When the probe pin 1820 is in contact with the battery cell electrode, the probe pin 1820 is allowed to move into the probe pin guide 1830, but when the contact is released, the probe pin 1820 is moved again into the probe pin guide 1830. ) so that the pin head can protrude from the end.

In this way, as the probe pin 1820 is disposed at the top and bottom of the cell guide 1810 with the cell guide 1810 in between, the battery cell electrode can enter the cell guide 1810 to a sufficient depth. If the battery cell electrode sufficiently enters the cell guide 1810, the following advantages may occur.

When the battery cell fixing modules 1140 move closer to or farther away from each other, they are not moved by receiving power from a separate motor, but are moved by the cell guide 1810. When the battery cell electrode flows into the cell guide 1810 and the battery cell moves according to the movement of the jig plate 1130, the movement of the battery cell causes the cell guide 1810 to move in the direction of movement of the battery cell. (3rd axis) receives external force. As the cell guide 1810 receives an external force, the first frame 1710 and the remaining frames connected to it may also move together.

Here, when the battery cell electrode is not sufficiently introduced into the cell guide 1810, a situation occurs in which an external force is applied to the cell guide 1810 with only a portion of the battery cell electrode due to movement of the battery cell, so that the battery cell electrode The risk of damage increases. Conversely, when the battery cell electrode sufficiently flows into the cell guide 1810, the battery cell electrode contacts the cell guide 1810 with a sufficient area and can apply external force, thereby reducing the risk of damage.

Meanwhile, the electrode connection part 1720 may have a structure as shown in FIG. 18B.

Referring to (a) to (c) of Figure 18b, the electrode connection part 1720 according to the second embodiment of the present invention includes a connection roller 1850, a rotating roller 1860, an elastic member 1870, and a bearing 1880. ) and stop ring (1890). Although omitted in FIG. 18B, a cell guide 1810 is formed between the two connection rollers 1850.

The connection roller 1850 is made of a conductive material, rotates by the rotating roller 1860, and is electrically connected to the battery cell electrode.

The connection roller 1850 includes a coupling hole 1855 at a position away from the center (eccentricity). Accordingly, the coupling protrusion 1865 of the rotary roller 1860 and the coupling member (not shown) are coupled through the coupling hole 1855, and when both rollers 1850 and 1860 are coupled, they are connected by rotation of the rotary roller 1860. The roller 1850 rotates. At this time, since the connection roller 1850 includes the coupling hole 1855 at a position off the center, if there is no separate external force, a portion of the connection roller 1850 protrudes outside the first frame 1710 ((b in Figure 18b) ))do. Meanwhile, when the battery cell electrode enters along the cell guide 1810, the connection roller 1850 contacts (electrically connects) the battery cell electrode and rotates around the position of the coupling hole 1855 ((c in Figure 18b) ))do.

This can have the following effects: For example, in the case of a conventional pogo pin that is placed within a guide and reciprocates within the guide, there is no problem if the battery cell electrode enters in the axis direction in which the pogo pin reciprocates and comes into contact with the pogo pin. does not occur However, when the pogo pin has an axial direction and angle in which the pogo pin reciprocates, and the battery cell electrode enters and contacts the pogo pin, friction occurs between the pogo pin and the guide, and wear of the pogo pin and guide occurs. When wear occurs on the pogo pin, changes in electrical characteristics may occur, which may adversely affect the measurement of the electrical characteristics of the battery cell in contact with the pogo pin. On the other hand, since the connection roller 1850 rotates based on the coupling hole 1855, in addition to the wear that inevitably occurs due to contact, additional wear that occurs due to the direction of contact with the battery cell electrode can be prevented. .

The rotating roller 1860 rotates the connecting roller 1850 when the connecting roller 1850 receives an external force (due to contact with a battery cell electrode). The rotating roller 1860 includes a coupling protrusion 1865 at the center and is coupled to the coupling hole 1855 of the connection roller 1850 with a coupling member (not shown). Accordingly, when the connecting roller 1850 receives an external force, the rotating roller 1860 rotates and rotates the connecting roller 1850 together.

The rotating roller 1860 is also made of a conductive material and is electrically connected to the battery cell electrode through the connecting roller 1850. Meanwhile, a wire (not shown) may be formed on the rotating roller 1860 to electrically connect the rotating roller 1860 and a control unit (not shown). Because the connection roller 1850 contacts the battery cell electrode a relatively large number of times, its lifespan is relatively shorter than that of the rotating roller 1860. Accordingly, in a situation where the connection roller 1850 needs to be replaced and a wire (not shown) is formed on the connection roller 1850, not only the connection roller 1850 but also the wire (not shown) must be replaced. Inconvenience may occur. To prevent this inconvenience, an electric wire (not shown) is formed on the rotating roller 1860, so that only the connecting roller 1850 can be smoothly replaced.

The elastic member 1870 is connected to the first frame 1710 at one end and to a point of the rotating roller 1860 at the other end, and is connected to the rotating roller 1860, more specifically, to a point of the rotating roller. Return to position. The elastic member 1870 is connected to a point of the rotating roller 1860 such that a portion of the elastic member 1870 protrudes out of the first frame 1710 in the absence of a separate external force. When the connection roller 1850 is in contact with the battery cell electrode and the connection roller 1850 and the rotating roller 1860 rotate, the elastic member 1870 is connected to the first frame 1710 at one end and is thus connected with the connection roller 1850 and the rotating roller 1860. It rotates. Thereafter, when the contact between the connection roller 1850 and the battery cell electrode is released, the elastic member 1870 is restored and the rotating roller 1860 is restored. As the rotating roller 1860 returns, the connection roller 1850 may also return to its initial position.

The bearing 1880 is implemented at a position corresponding to the rotation axis of the rotation roller 1860 in the first frame 1710, is coupled to the rotation roller 1860, and rotates the rotation roller 1860 in place.

The stop ring 1890 is disposed on the outside of the bearing 1880 within the first frame 1710 to prevent the bearing 1880 from being separated from the first frame 1710.

Meanwhile, the connection roller 1850 is shown in the form of a roller in FIG. 18(b), but is not necessarily limited thereto. It includes a coupling hole 1855, and at the initial position, a portion protrudes outside the first frame 1710, so that when the battery cell electrode first enters and makes contact, it can be implemented in any form as long as it rotates and maintains contact. It's okay. For example, the connection roller 1850 may be implemented in a fan shape.

The above description is merely an illustrative explanation of the technical idea of the present embodiment, and those skilled in the art will be able to make various modifications and variations without departing from the essential characteristics of the present embodiment. Accordingly, the present embodiments are not intended to limit the technical idea of the present embodiment, but rather to explain it, and the scope of the technical idea of the present embodiment is not limited by these examples. The scope of protection of this embodiment should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of this embodiment.

100: Battery cell inspection system 110: Battery cell transfer device
120: Battery cell inspection device 130: Conveyor
140: Tray 305: Stand
310, 315, 420, 425, 1150, 1155, 1418: Rail
320, 323, 326, 470: motor 330: guide body
340, 480, 1540: Screw 350, 485, 1530: Nut
360, 1760: Shaft 370: Battery cell transfer
410, 1160, 1550, 1710, 1714, 1718, 1910: Frame
413, 416: connection portion 430: sliding joint portion
435: sliding groove 440, 445: link member connection part
450: Link member 460: Battery cell gripper
490: first sensor 495: second sensor
610, 1020, 1735: protrusion 615, 1855: coupling hole
710, 1880: Bearing 720: Spacer
810, 990, 995, 1740: Stopper 910, 920, 930: Link frame
912: Slide rail 914: Link member fixing pin
916, 925, 1780, 1785: Guide portion 918: Stopper support portion
940, 1760: Actuator 950, 1920: Cylinder
960: Hinge axis 970: Grip part
974, 2060: Grip body 978, 2050, 2230: Grip projection
980: Angle detection sensor 985: Angle adjustment shaft
1010: Groove 1110: Pressure member
1120: Jig press plate 1130: Jig plate
1140: Battery cell fixing module 1164, 1168: Fixing plate
1170: pressure sensor 1180: support plate
1185: elastic member 1190: guide cylinder
1210: Pressure part 1220: Wing part
1400: Battery cell 1410: Jig frame
1414: Guide hole 1420: Pad
1430: Pad fixing plate 1435, 1520: Fixing part
1440: Support sheet height adjustment unit 1450: Support sheet fixing unit
1460: support sheet support 1470: support sheet
1510: Body 1515: Guide hole
1560: Coupling hole 1570: Guide member
1610: Cover part 1620: Protrusion
1630: Support means 1640: Fastening means
1720: Electrode connection part 1730: Battery cell detection sensor
1750: Bush 1755: Fixing ring
1810: Cell guide 1820: Probe pin
1830: Probe pin guide 1840: Probe pin fixing part
1850: Rotating roller 1860: Rotating roller
1865: Combining protrusion 1870: Elastic member
1890: Stop ring 1930: Distance detection sensor
1934: Tray detection and acceleration sensor 1938: Temperature sensor
1940: Tray recognition unit 2010, 2015: Plate detection sensor
2020: Plate fixing part 2030: Plate
2035, 2215: Guide Home 2040: LM Guide
2054: Fixed shaft 2058: Rotating roller
2210: Grip projection guiding plate 2220: Grip projection fixing part

Claims (24)

In the electrode connection module electrically connected to the battery cell or battery cell electrode,
frame;
A connecting member electrically connected to the battery cell electrode;
a rotating member coupled to one position of the connecting member and rotating the connecting member when the connecting member receives an external force;
an elastic member whose one end is connected to the frame and the other end of which is connected to the rotating member to return the rotating member to its initial position; and
A bearing located within the frame and rotating the rotating member in place
An electrode connection module comprising: According to paragraph 1,
The connection member is,
An electrode connection module comprising a coupling hole through which the rotating member can be coupled. According to paragraph 2,
The coupling hole is,
An electrode connection module, characterized in that it is formed in a position away from the center of the connection member. According to paragraph 2,
The rotating member is,
An electrode connection module comprising a coupling protrusion to be coupled to the coupling hole and a coupling member. According to paragraph 4,
The connecting protrusions are,
An electrode connection module, characterized in that formed at the center of the rotating member. According to paragraph 1,
The rotating member is,
An electrode connection module characterized in that it is implemented in the form of a roller. According to paragraph 1,
The initial position of the rotating member is,
An electrode connection module, wherein a portion of the connection member connected to the rotation member protrudes outside the frame. According to paragraph 1,
The bearing is,
An electrode connection module, characterized in that it is implemented at a position corresponding to the rotation axis of the rotation member in the frame. According to clause 8,
The electrode connection module further includes a stop ring disposed on the outside of the bearing within the frame to prevent the bearing from being separated. According to paragraph 1,
The rotating member and the connecting member are,
An electrode connection module characterized by being implemented with a conductive material. In the electrode connection module electrically connected to the battery cell or battery cell electrode,
frame;
A connecting member electrically connected to the battery cell electrode; and
A battery cell detection sensor that senses whether a battery cell is approaching the connection member.
An electrode connection module comprising: According to clause 11,
The battery cell detection sensor is,
An electrode connection module comprising a protrusion protruding from a lower end of the connection member toward the connection member. According to clause 12,
The protrusion is,
An electrode connection module that is implemented in two pieces and is implemented with a gap so that the battery cells can be positioned between them when electrically connected to the connection member. In the battery cell fixing module that fixes the battery cell and moves together with the movement of the battery cell,
a first frame that electrically contacts the battery cells and secures the battery cells;
a second frame connected to the first frame and allowing the first frame to move along an axis along which the battery cell moves;
a third frame disposed to face the first frame and the second frame at a predetermined distance apart from the first frame and the second frame;
A lead that receives power and moves along the axis along which the battery cell moves and contacts or moves away from the second frame; and
Actuator that provides power to the reed
A battery cell fixing module comprising: According to clause 13,
The first frame and the second frame include a through hole having a first preset cross-sectional area, and the third frame includes a through hole or groove having a preset second cross-sectional area. According to clause 15,
The battery cell fixing module further comprises a shaft that passes through the through holes of the first frame and the second frame and flows into the through hole or groove of the third frame. According to clause 16,
The through hole or groove of the third frame is,
A battery cell fixing module, characterized in that it has the same size as the cross-sectional area of the shaft. According to clause 16,
It contacts the shaft internally and the through hole of the first frame and the second frame externally, respectively, and further includes a bush that moves the first frame and the second frame along the shaft. Battery cell fixing module. According to clause 18,
The battery cell fixing module further includes a fixing ring on the outer surface of the second frame to prevent the bush of the second frame from leaving. According to clause 18,
A battery cell fixing module further comprising a stopper disposed at an end of the shaft to prevent separation of the bush and the fixing ring. According to clause 16,
The shaft is,
A battery cell fixing module characterized in that it is implemented in plural pieces. According to clause 14,
The lead is,
A battery cell fixing module that contacts the second frame and prevents movement of the second frame. According to clause 14,
The battery cell fixing module, wherein the lead moves away from the second frame, and the second frame can move toward the lead to the position of the lead. According to clause 14,
A connecting member electrically connected to the electrode of the battery cell; and
A battery cell fixing module further comprising a battery cell detection sensor that senses whether a battery cell is approaching the connection member.

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