CN210908668U - A square battery module busbar clamping tool - Google Patents

Abstract

The utility model discloses a square battery module busbar presss from both sides tight frock, including supporting component and busbar clamp plate, the supporting component includes tray bottom plate and electric core support piece, electric core support piece is equipped with including first electric core support piece and second electric core support piece, electric core support piece fixed connection is on the tray bottom plate, busbar cramp piece is in tray bottom plate top, busbar cramp piece is connected in order can dismantle the mode with the tray bottom plate. The utility model discloses busbar clamping component's briquetting independently hangs on the briquetting fixed plate, can realize the crimping work of the not co-altitude electric core of automatic adaptation, the welding of being convenient for.

Description

A square battery module busbar clamping tool

technical field

The embodiments of the utility model relate to the technical field of battery module manufacturing, and in particular, to a clamping tool for busbars of a square battery module.

Background technique

The battery module is used to provide power for new energy vehicles. Chinese patent 201821378978.1 discloses a battery module with a heating system, including end plates, side plates, cells and bus bars. The end plates are located at the left and right ends of the battery cells, and the side plates It is located at the front and rear ends of the battery cell, and the bus bar is located above the battery cell. In order to assemble the battery module into a whole, it is necessary to weld the junction of the end plate and the side plate, and at the same time, the bus bar and the battery core should be welded. Usually, Under laser welding, due to the special requirements of laser welding, the gap between the welded busbar and the cell must be less than 0.15mm, and special tooling is required to fix the position of the aluminum busbar and the cell to meet the Requirements for laser welding.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to solve the above-mentioned technical problems, and to provide a busbar clamping tool for a square battery module, which is used for clamping the busbar and the cells of the square battery module to facilitate welding work.

The embodiment of the present invention provides a square battery module busbar clamping tool, which includes a support assembly and a busbar clamping plate, the support assembly includes a tray bottom plate and a cell support, and the cell support is provided with a The first cell support member and the second cell support member, the cell support member is fixedly connected to the tray bottom plate, the bus bar clamping member is located above the tray bottom plate, and the bus bar clamping member and the tray bottom plate are connected to the bottom plate. Removably connected.

Further, in the above-mentioned square battery module busbar clamping tool, wherein: the busbar clamping member further includes a pressure block, a cover plate and a pressure block fixing plate, the pressure block fixing plate is fixedly connected to the cover plate, and the pressure block fixing plate is fixedly connected to the cover plate. There are a plurality of pressing blocks, and each pressing block is connected to the pressing block fixing plate. Welding hole for the welding head to pass through.

Further, in the above-mentioned square battery module busbar clamping tool, wherein: the pressure block includes a pressure block body, a guide rod and a spring, the cross section of the pressure block body is T-shaped, and the left and right ends of the pressure block body support On the pressure block fixing plate, the lower end of the pressure block body protrudes from the lower surface of the pressure block fixing plate, the welding hole penetrates the pressure block body, the guide rod penetrates the pressure block body, and the pressure block fixing plate is provided with a fixing plate. The guide rod is connected to the fixing hole on the fixing plate of the pressure block, the spring is sleeved on the outer circumference of the guide rod, and the spring is limited between the upper end of the guide rod and the upper surface of the pressure block body.

Further, in the above-mentioned square battery module busbar clamping tool, wherein: the pressure block includes a pressure block body, a guide rod and a spring, the pressure block body is located under the pressure block fixing plate, and the welding hole penetrates the pressure block body, The guide rod penetrates through the pressure block body, the pressure block fixing plate is provided with a fixing hole, and the guide rod passes through the fixing hole on the pressure block fixing plate, and the spring is sleeved on the outer circumference of the guide rod and limited to the pressure block. between the bottom surface of the block fixing plate and the top surface of the pressing block body.

Further, in the above-mentioned square battery module bus bar clamping tool, there are two guide rods, and the two guide rods are located on the left and right sides of the welding hole.

Further, in the above-mentioned square battery module bus bar clamping tool, a protruding portion is provided at the bottom of the pressing block body.

Further, in the above-mentioned square battery module bus bar clamping tool, wherein: the guide rod is a right-angle countersunk head screw.

Still further, in the above-mentioned square battery module busbar clamping tooling, wherein: the busbar clamping member is provided with a positioning seat, the positioning seat is provided with an elbow clip, and the elbow clips are connected to the clamping parts, so A positioning seat is also provided on the bottom plate of the tray, and the positioning seat on the bottom plate of the tray corresponds to the position of the positioning seat on the clamping member of the bus bar, and the positioning seat on the bottom plate of the tray is also provided with a clamping part, and the bus bar is also provided with a clamping part. The positioning seat on the row clamping piece is inserted into the positioning seat on the tray bottom plate, and the clamping part of the positioning seat on the bus bar clamping piece is clamped with the clamping part of the positioning seat on the tray bottom plate.

Still further, in the above-mentioned square battery module busbar clamping tool, there are four positioning seats on the busbar clamping member, and the four positioning seats are located at the four corners of the cover plate.

The substantive features and significant technical progress of the present utility model are reflected in: each pressing block of the busbar clamping assembly of the present utility model is independently suspended on the pressing block fixing plate, which can automatically adapt to the crimping work of cells of different heights, which is convenient for welding.

Description of drawings

Fig. 1 is a schematic diagram of the structure of a clamping tool for a square battery module;

FIG. 2 is a schematic diagram of the clamping tooling for the end plate and the side plate of the square battery module;

Figure 3 is a schematic structural diagram of a side plate clamping member;

Fig. 4 is a side view structural schematic diagram of a side plate clamping member;

Figure 5 is a schematic view of the structure of the side plate clamping piece indenter;

Figure 6 is a schematic diagram of the back side of the side plate clamping piece indenter;

FIG. 7 is a schematic structural diagram of another embodiment of the side plate clamp;

8 is a schematic diagram of the structure of the indenter in the side plate clamp of another embodiment;

FIG. 9 is a schematic structural diagram of a busbar clamping member;

Figure 10 is a schematic diagram of the bottom surface structure of the busbar clamping part;

Figure 11 is a schematic diagram of the structure of the clamping block;

12 is a schematic structural diagram of another embodiment of the busbar clamping member;

13 is a schematic diagram of the connection between the clamping block and the fixing plate according to another embodiment of the busbar clamping member;

Figure 14 is a schematic structural diagram of the end plate movable clamping part;

Figure 15 is a schematic diagram of the use of end plate and side plate clamping tooling;

Figure 16 is a schematic diagram of the structure of the busbar clamping tool.

Description of reference numerals: 1. Tray bottom plate; 11. Cell support member; 12. Reference fixing bottom plate; 13. Fool-proof structural member; 14. Positioning seat; , indenter; 211, indenter front plate; 2111, convex part; 2112, welding port; 2113, notch; 212, indenter fixing plate; 2121, welding port; 2122, positioning point; 2123, bending part; 213 , indenter guide rod; 214, spring; 22, rear plate; 23, front plate; 24, push plate; 25, toggle clamp; 251, toggle clamp push rod; 26, spring; 27, guide rod; 3, end plate Reference block; 4, end plate pressing mechanism; 41, end plate splint; 42, push plate; 43, fixed plate; 44, screw rod; 45, turntable; 46, guide rod; 47, connecting rod; 48, pressure sensor; 5. Busbar clamping part; 51. Press block; 511, Press block body; 512, Guide rod; 513, Spring; 514, Welding hole; 515, Protrusion; 52, Cover plate; 53, Toggle clamp; , positioning seat; 55, the clamping part; 56, the pressure block fixing plate; 6, the battery module.

Detailed ways

Exemplary embodiments of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in use, and is only for the convenience of describing the application and simplifying the description, rather than indicating or It is implied that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

As shown in Figures 1 and 2, taking the illustrated direction as an example, the square battery module clamping tool includes a support assembly, a side plate clamp assembly 2, an end plate clamp assembly and a busbar clamp plate 5, and the support assembly includes a tray The bottom plate 1, the cell support member 11, the reference fixing base plate 12 and the positioning seat 14, the cell support member 11 is provided with a first cell support member and a second cell support member, the cell support members 11, The reference fixing base plate 12 and the positioning base 14 are fixedly connected to the tray base plate 1 . The first cell support member and the second cell support member are arranged side by side, the reference fixing base plate 12 is located between the first cell support member and the second cell support member, and the end plate pressing assembly includes an end plate reference The block 3 and the end plate pressing mechanism 4, the end plate reference block 3 and/or the end plate pressing mechanism 4 are fixedly connected to the reference fixing base plate 12 in a detachable manner. Row of positioning holes, correspondingly, the end plate reference block 3 and the end plate pressing mechanism 4 are also provided with fixing holes. The positioning holes are fixedly connected by screws. The positions of the end plate reference block 3 and the end plate pressing mechanism 4 on the reference fixing base plate 12 can be adjusted according to the length of the cell module 6 during actual operation. The end plate pressing mechanism 4 is provided with a push plate 42 that can slide toward the end plate reference block 3 . There are two side plate clamping assemblies 2 , and the side plate clamping assemblies 2 are fixedly connected to the tray bottom plate 1 , and the two side plate clamping assemblies 2 are arranged opposite to each other and are located on the front and rear sides of the two cell support members 11 respectively. . The busbar clamping member 5 is located above the tray bottom plate 1, and the busbar clamping member 5 is provided with a positioning seat 54, and the positioning seat 54 is provided with a clamping portion 55, and the positioning seat 54 is provided with four, The four positioning seats 54 are respectively located at the four corners of the cover plate 52 . The positioning seats 14 on the support assembly correspond to the positioning seats 14 on the busbar clamping member 15 , and the positioning seats 14 are also provided with clamping parts 15 . , the positioning seat 54 on the busbar clamping member 5 is inserted into the positioning seat 14 on the support assembly, and the clamping portion 55 on the busbar clamping member 5 is connected with the positioning seat 14. The connecting portions 15 are snap-connected, so that the busbar clamping member 5 is detachably connected with the tray bottom plate 1 .

Example 1

As shown in FIG. 2 , a plurality of foolproof structural members 13 are additionally provided. The foolproof structural members 13 are block-shaped, and the width of each foolproof structural member 13 matches the width of a single cell in the battery module. The upper surface of the foolproof structural member 13 is higher than the upper surface of the cell support member 11 . The foolproof structural members 13 are all detachably connected to the reference fixing base plate 12 , and the foolproof structural members 13 are arranged in parallel and located at the first between the cell support member and the second cell support member. The end of the foolproof structure 13 is close to the first support or the second support. Specifically, the fool-proof structural member 13 is also provided with a fixing hole, and the fool-proof structural member 13 is fixedly connected to the reference fixing base plate 12 through a screw rod. As shown in Figure 2 and Figure 15, the working principle of the foolproof structure is as follows: when using a square battery module to clamp the tool, turn the cell upside down and place it on the first cell support and the second cell support, and the cell The poles of the square cell are respectively supported on the edge of the upper surface of the first cell support and the second cell support. The poles of the square cell have the characteristics of a short positive pole and a long negative pole, and a foolproof structure is corresponding to the bottom of each cell. 13. According to the actual situation of the series-parallel arrangement of the cells, the position of the fool-proof structural member 13 on the reference fixed base plate 12 can be adjusted, so that the end 13 of the fool-proof structural member is close to the cell support where the positive end of the cell is located. The cell can be supported on the foolproof structure 13 to fill the difference between the positive pole and the negative pole of the cell. Therefore, when placing the cell, if the cell is kept horizontal, it means the orientation is correct. If the cell cannot be guaranteed to be level, it means that the cell is placed in the opposite direction, and it can be placed by turning 180°.

Example 2

As shown in FIGS. 1 to 6 , the side plate clamping assembly 2 includes a pressing head 21 , a rear plate 22 , a front plate 23 , a push plate 24 , an elbow clamp 25 , a spring 26 and a guide rod 27 , and the rear plate 22 is fixedly connected to the tray On the bottom plate 1, the front plate 23 is on the front side of the rear plate 22, and the front plate 23 and the rear plate 22 are connected by a guide rod 27, the guide rod 27 runs through the rear plate 22, and the spring 26 is sleeved on the outer circumference of the guide rod 27 and limited to between the rear end of the guide rod 27 and the rear plate 22 . The toggle clamp 25 is connected to the rear plate 22, and the toggle clamp push rod 251 is located between the front plate 22 and the rear plate, the indenter 21 and the push plate 24 are provided with two, and the two indenters 21 pass through the two The push plate 24 is connected to the left and right ends of the front plate 23 . When the elbow clamp 25 is pulled until the elbow clamp 5 is locked in place, the elbow clamp push rod 251 moves forward against the front plate 22 and pushes the front plate 22 to move forward, and drives the guide rod 27 to move forward to squeeze the spring 26 . That is, the pressing heads 21 of the two oppositely disposed side plate clamping assemblies 2 can be pressed toward the side plate of the battery module at the same time. When the toggle clamp is unlocked and pulled to the initial position, the guide rod 27 is reset under the action of the spring 26 . Preferably, two guide rods 27 are provided, and the guide rods 27 are located on the left and right sides of the toggle clamp 25 .

Specifically, as shown in FIGS. 5 and 6 , the ram 21 includes a ram front plate 211 , a ram fixing plate 212 , a ram guide rod 213 and a spring 214 , and the ram front plate 211 is on the front side of the ram fixing plate 212 . , the indenter front plate 211 and the indenter fixing plate 212 are connected by indenter guide rods 213, the indenter guide rods 213 are provided with four, and the four indenter guide rods 213 are respectively connected to the front of the indenter At the four corners of the plate 211 and the indenter fixing plate 212 , the indenter guide rod 213 and the indenter front plate 211 are not tightly connected. The spring 214 is sleeved on the outer periphery of the indenter guide rod 213 and is limited between the indenter front plate 211 and the indenter fixing plate 212 . The indenter front plate 211 is provided with a welding port 2112, and the indenter fixing plate 212 is provided with a welding port 2121. Pass through to weld the end plate and side plate of the battery module.

Preferably, as shown in FIG. 5 , the welding opening 2121 is in the shape of a long strip, and a protrusion 2111 is formed on the front side of the front plate 211 of the indenter and located at the edge of the welding opening 2112 of the front plate 211 of the indenter, which is convenient for pressing the side plate and pressing The edge of the welding opening 2112 of the head front plate 211 is also provided with a gap 2113, which is convenient for observing the welding condition. There is a positioning point 2122 on the back 2122 of the fixing plate 212 and close to the welding port 2121. The positioning point 2122 can be selected with a black nut, which is convenient for the image recognition of the welding head, so as to find the welding port 2121, which is convenient for welding work. A bending portion 2123 is formed on one edge of the indenter fixing plate 212 , and the surface of the bending portion of the bending portion 2123 is fixedly connected to the push plate 24 . The indenter guide rod 213 is a right-angle countersunk head screw.

Example 3

As shown in FIG. 7 and FIG. 8 , the difference between this embodiment and Embodiment 2 is that the gap 2113 is no longer provided in this embodiment. In addition, since the indenter 21 is located on both sides of the side plate clamping assembly 2, and its outermost edge is on the inner side of the force, the protrusion 2111 of the indenter 21 on the left side protrudes from the protrusion on the right side. The raised part 211, the indenter 21 on the right side, the protruding part 2111 on the right side protrudes from the protruding part 211 on the left side.

Example 4

As shown in FIG. 9 to FIG. 11 , the bus bar clamping member 5 includes a pressing block 51 , a cover plate 52 , an elbow clamp 53 , a positioning seat 54 , a clamping portion 55 , and a pressing block fixing plate 56 , on the cover plate 52 There is an opening, the pressure block fixing plate 56 is fixedly connected to the cover plate 52 and the pressure block fixing plate 56 is located at the opening, the pressure block 51 is provided with a plurality of, and the pressure blocks 51 are arranged side by side, So that the pressure block corresponds to the position of the bus bar of the battery module, the pressure block 51 is provided with a welding hole 514 for the welding head to pass through. The cover plate 52 is provided with a positioning seat 54, the positioning seat 54 corresponds to the position of the positioning seat 14 on the tray bottom plate 1, and an elbow clip 53 is provided on the positioning seat 54, and each of the elbow clips 53 The upper parts are all connected to the clamping part 55 .

The pressure block 51 includes a pressure block body 511, a guide rod 512 and a spring 513. The pressure block body 511 has a T-shaped cross section. The left and right ends of the pressure block body 511 are supported on the pressure block fixing plate 56, and the lower end of the pressure block body 511 protrudes. On the lower surface of the pressure block fixing plate 56 , the welding hole 514 penetrates the pressure block body 511 , and the guide rod 512 penetrates the pressure block body 511 . The pressure block fixing plate 56 is provided with a fixing hole, and the lower end of the guide rod 512 is connected to the fixing hole on the pressure block fixing plate 56 . The spring 513 is sleeved on the outer circumference of the guide rod 512 and the spring 513 is limited between the upper end of the guide rod 512 and the upper surface of the pressing block body 511 . Preferably, the lower edge of the pressing block body 511 is formed with a protruding portion 515 extending downward. The guide rod 512 is preferably a right angle countersunk head screw. There are two guide rods 512 , and the two guide rods 512 are located on the left and right sides of the welding hole 514 .

Example 5

As shown in FIGS. 12 and 13 , the difference between this embodiment and Embodiment 4 is that in this embodiment, the pressure block body 511 has a block-like structure, the pressure block body 511 is located under the pressure block fixing plate 56 , and the guide rod 512 Passing through the fixing hole on the pressure block fixing plate 56 , the spring is sleeved on the outer circumference of the guide rod 512 and is limited between the bottom surface of the pressure block fixing plate 56 and the top surface of the pressure block body 511 .

Example 6

As shown in FIG. 1 and FIG. 14 , the end plate pressing assembly includes an end plate reference block 3 and an end plate pressing mechanism 4 . The end plate reference block 3 and the end plate pressing mechanism 4 are located at the left and right ends of the cell support 11 respectively. . The end plate reference block 3 is bent at a right angle and includes a horizontal plate part and a vertical plate part. The horizontal plate part is provided with a fixing hole, the fixing hole on the horizontal plate part and the positioning hole on the end plate reference block 3 Fixed connection by screw. The end plate pressing mechanism 4 includes an end plate splint 41, a push plate 42, a fixed plate 43, a screw rod 44, a turntable 45 and a connecting rod 47. The fixed plate 43 includes a horizontal plate-shaped part and a vertical plate-shaped part, and the horizontal plate-shaped part Connected to the bottom of the vertical plate-shaped part, a reinforcing member is connected between the horizontal plate-shaped part and the vertical plate-shaped part, the horizontal plate-shaped part is provided with a fixing hole, the fixing hole on the horizontal plate-shaped part and the end plate reference block 3 The positioning holes are fixedly connected by screws, the push plate 42 is located on the front side of the fixed plate 43, the end plate splint 41 is located on the front side of the push plate 42, the push plate 42 and the fixed plate 43 are connected by the screw rod 44, and the push plate 42 and the fixed plate 42 are connected with each other. A guide rod 46 is connected between the plates 43 , the end plate clamping plate 41 is on the front side of the push plate 42 , and the end plate clamping plate 41 and the push plate 42 are connected by a connecting rod 47 . Specifically, the connecting rod 47 is connected to the four corners of the end plate clamping plate 41 and the push plate 42 . Preferably, a pressure sensor 48 is provided between the end plate clamping plate 41 and the push plate 42 , and a turntable 45 is connected to the end of the screw rod 44 . By manually rotating the turntable 45, the screw rod 44 can be driven to rotate, so that the push plate 42 moves forward, so that the end plate clamping plate 41 moves forward. Of course, the turntable 45 can also be replaced by a motor, and the forward movement of the end plate 41 can also be realized.

The method of using the square battery module clamping tool of the present invention is as follows: as shown in FIG. 15 , turn the battery module 56 upside down, so that the positive and negative poles of the cells of the battery module 6 are located between the first cell support and the The edge of the second cell support member, and two side plates are placed on the front and rear sides of the cell module 6, and two end plates are placed on the left and right ends of the cell module 6, and the end plates are clamped by rotating the turntable 45. 41 moves toward the battery module 6, so that the battery module 6 is clamped between the end plate reference block 3 and the end plate pressing mechanism 4. The pressure sensor 48 can make the operator know the current pressure and prevent the battery module 6 from being damaged by excessive pressure. Then, by pulling the toggle clamp, the pressing heads 21 of the two side plate clamping assemblies 2 are moved toward the battery module 6 , and the battery module 6 is clamped between the two side plate clamping assemblies 2 . The indenter front plate 21 and the indenter fixing plate 23 are connected by the positioning rod 213, and the positioning rod 213 and the indenter front plate 21 are in a non-tight connection state, and the positioning rod 213 is provided with a spring 214 on the outer circumference, which can realize the pressure The head 21 is free to deflect at a small angle to adapt to the crimping environment between the end plate and the side plate. Even if the flatness of the end plate and the side plate does not reach the ideal state, it can be automatically adjusted to meet the requirement of less than 0.15mm gap. The welding head can weld the end plate and the side plate through the welding opening 2112 of the pressure head front plate 211 on the pressure head 21 and the welding opening 2121 of the pressure head fixing plate 212 .

As shown in Fig. 16, after the welding of the end plate and the side plate is completed, turn the battery module 6 over so that the cell poles face upward, and cover the busbars on the cell poles. When using the busbar clamp 5 , insert the positioning seat 54 of the bus bar clamp 5 with the positioning seat 14 on the tray bottom plate 1, and insert the positioning seat 54 of the bus bar clamp 5 with the positioning seat 14 on the tray bottom plate 1, and then pull Moving the elbow clip 53 locks the engaging portion 55 on the positioning base 54 and the engaging portion 15 on the positioning base 14 for locking and engaging. The welding head welds the bus bar and the cell through the welding hole 514 on the pressing block 51 . The outer circumference of the guide rod 512 of the welding head is provided with a spring 513, so that each pressure block 51 is independently suspended on the pressure block fixing plate 56 to adapt to the crimping environment of the bus bar, even if the surface flatness of the bus bar does not reach the ideal state, it can also be realized Automatic adjustment to meet the requirements of less than 0.15mm gap.

It can be seen from the above description that the utility model can satisfy different numbers of single cells and different combinations of series and parallel, and is compatible with products of various specifications; The crimping environment between the plate and the side plate, even if the flatness of the end plate or the side plate is not in the ideal state, can be automatically adjusted to meet the requirement of less than 0.15mm gap, which is convenient for welding; The block is independently suspended on the pressing block fixing plate, which can automatically adapt to the crimping work of cells of different heights, which is convenient for welding; the fool-proof mechanism can fully prevent personnel from swinging the positive and negative poles of the end plates or cells in reverse, improving the product qualification rate and improving the quality of the product. Reduce the risk of short circuit, improve production safety, and ensure that the inversion of the cell can make the lead out of the cell as flat as possible, reduce the gap between the bus bar and the cell, and improve the product qualification rate.

Of course, the above are only typical examples of the present utility model. In addition, the present utility model can also have other various specific embodiments. All technical solutions formed by equivalent replacement or equivalent transformation are all within the scope of the present utility model. within the range.

Claims (9)

1. A square battery module busbar clamping tool, characterized in that it includes a support assembly and a busbar clamp plate, the support assembly includes a tray bottom plate and a cell support member, and the cell support member is provided with a first A cell support member and a second cell support member, the cell support member is fixedly connected to the tray bottom plate, the bus bar clamping member is located above the tray bottom plate, and the bus bar clamping member and the tray bottom plate can be connected to the tray bottom plate. connected by disassembly. 2 . The busbar clamping tool for square battery modules according to claim 1 , wherein the busbar clamping member further comprises a pressure block, a cover plate and a pressure block fixing plate, and the pressure block fixing plate is fixedly connected. 3 . On the cover plate, there are a plurality of the pressing blocks, each pressing block is connected to the pressing block fixing plate, and the pressing blocks are arranged side by side, so that the pressing blocks correspond to the bus bars of the battery module, and each pressing block is arranged in a row. The pressing block is provided with a welding hole for the welding head to pass through. 3 . The busbar clamping tool for square battery modules according to claim 2 , wherein the pressing block comprises a pressing block body, a guide rod and a spring, and the cross-section of the pressing block body is T-shaped, and the pressing The left and right ends of the block body are supported on the pressure block fixing plate, the lower end of the pressure block body protrudes from the lower surface of the pressure block fixing plate, the welding hole penetrates the pressure block body, the guide rod The block fixing plate is provided with a fixing hole, the guide rod is connected to the fixing hole on the pressure block fixing plate, the spring is sleeved on the outer circumference of the guide rod, and the spring is limited between the upper end of the guide rod and the upper surface of the pressure block body. 4 . The square battery module busbar clamping tool according to claim 2 , wherein the pressure block comprises a pressure block body, a guide rod and a spring, the pressure block body is located under the pressure block fixing plate, and the pressure block body is located below the pressure block fixing plate. 5 . The welding hole penetrates through the pressure block body, the guide rod penetrates the pressure block body, the pressure block fixing plate is provided with a fixing hole, and the guide rod penetrates the fixing hole on the pressure block fixing plate, and the spring is sleeved on the guide block The outer circumference of the rod is limited between the bottom surface of the pressure block fixing plate and the top surface of the pressure block body. 5 . The square battery module busbar clamping tool according to claim 3 , wherein there are two guide rods, and the two guide rods are located on the left and right sides of the welding hole. 6 . 6 . The busbar clamping tool for square battery modules according to claim 3 , wherein a protrusion is provided at the bottom of the pressing block body. 7 . 7. The square battery module busbar clamping tool according to claim 3 or 4, wherein the guide rod is a right-angle countersunk head screw. 8 . The busbar clamping tool for square battery modules according to claim 1 , wherein a positioning seat is provided on the busbar clamping member, the positioning seat is provided with an elbow clamp, and the elbow clamp is provided with an elbow clamp. 9 . Connect the clamping part, the tray bottom plate is also provided with a positioning seat, and the positioning seat on the tray bottom plate corresponds to the position of the positioning seat on the busbar clamping part, and the positioning seat on the tray bottom plate is also provided with a clamp The positioning seat on the busbar clamping piece is inserted into the positioning seat on the tray bottom plate, and the clamping part of the positioning seat on the busbar clamping piece is connected with the clamping part of the positioning seat on the tray bottom plate. Card access. 9 . The busbar clamping tool of claim 8 , wherein four positioning seats are provided on the busbar clamping member, and the four positioning seats are located at four corners of the cover plate. 10 .

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