CN111112836B - Integrated laser continuous welding device and battery assembling equipment - Google Patents

Abstract

The invention belongs to the technical field of laser welding, and relates to an integrated laser continuous welding device and battery assembling equipment, which comprise a downward pressing buffer device, a belt conveying device, a pressure head, a rotating device, a laser welding swinging head and a cutting device, wherein the belt conveying device, the pressure head, the rotating device, the laser welding swinging head and the cutting device are driven by the downward pressing buffer device to vertically move; one side of the rotating device is arranged on the front surface of the sliding plate, the laser welding swing head is arranged on the other side of the rotating device, and the laser beam emitted by the laser welding swing head can penetrate through the light through hole. In a word, the device and the battery assembling equipment have the advantages of simple structure, good compatibility, low model changing cost, short assembling and debugging time, low assembling cost and high production efficiency.

Description

Integrated laser continuous welding device and battery assembling equipment

Technical Field

The invention relates to the technical field of laser welding, in particular to an integrated laser continuous welding device and battery assembling equipment.

Background

As is well known, a battery module generally includes a housing and a battery core set disposed in the housing, wherein the battery core is connected to a terminal post led out from the battery core through a connecting sheet, so as to connect the battery core set in parallel or in series. That is, the series-parallel connection of the battery cell module at the present stage is mainly realized by the aluminum sheet of the laser welding. Specifically, when the equipment module, for realizing the series-parallel connection between electric core and the electric core, can make the pencil division board of different specifications usually, the aluminium connection piece of different conventional specifications can be inlayed to the inside, and during the welding, the aluminium connection piece needs climbing mechanism and presses a section of thick bamboo clamp plate cooperation to carry out laser welding again after compressing tightly with whole. However, the interval and the thickness of different modules, its utmost point post are different, correspondingly, and the copper mouth interval and the size of pressing the section of thick bamboo clamp plate also can be different, so, for assembling different electric core groups, need to change the pressure section of thick bamboo clamp plate that corresponds, obviously, holistic compatibility is not good, and the structure is more complicated, and installation and debugging time is long, and holistic equipment is with high costs, the packaging efficiency hangs down.

Particularly, under the conditions that the delivery time of the product is gradually shortened and the product is more and more frequently replaced, a new laser welding device is urgently needed to meet the requirement.

Disclosure of Invention

The invention aims to solve the technical problems of poor compatibility, complex structure, long installation and debugging time, high assembly cost and low assembly efficiency of the conventional welding device for assembling the electric core group.

In order to solve the technical problem, the invention provides an integrated laser continuous welding device, which adopts the following technical scheme:

the integrated laser continuous welding device comprises a downward pressing buffer device, a belt conveying device, a pressure head, a rotating device, a laser welding swinging head and a cutting device, wherein the belt conveying device, the pressure head, the rotating device, the laser welding swinging head and the cutting device are driven by the downward pressing buffer device to vertically move together;

the downward pressing buffer device is connected to the moving device and comprises a vertically arranged sliding plate capable of vertically sliding;

the belt feeding device is arranged on the front surface of the sliding plate and used for conveying a material belt to the bottom end of the pressing head through the belt feeding assembly;

the pressing head is vertically arranged at the bottom end of the belt conveying device and is used for pressing the material belt conveyed by the belt conveying assembly onto a target part; the middle part of the pressure head is provided with a light through hole;

one side of the rotating device is arranged on the front surface of the sliding plate and is used for adjusting the welding range and position of the laser welding swing head and/or the focal length and deflection angle of a laser beam;

the laser beam emitted by the laser welding swinging head penetrates through the light through hole, and the laser welding swinging head is arranged on the other side of the rotating device and used for welding the material belt pressed by the pressure head on the corresponding target part within the range limited by the light through hole;

the cutting device is arranged at the bottom end of the belt conveying device and used for cutting the material belt when needed.

In some embodiments, the pressing buffer device further comprises an intermediate connecting plate arranged on the front surface of the sliding plate, the rotating device comprises a rotating disc and a moving disc parallel to the rotating disc, the front surface of the rotating disc is provided with the laser welding swinging head, and the laser welding swinging head can rotate relative to the moving disc to drive the laser welding swinging head to swing; the front surface of the movable plate is arranged on the back surface of the rotating plate, the back surface of the movable plate is arranged on the front surface of the middle connecting plate, and the movable plate can transversely move relative to the sliding plate to adjust the focal distance and the deflection angle of the laser beam.

In some embodiments, the rotating device further comprises a first connecting member and a second connecting member, the rotating disc is provided with at least one arc-shaped hole around the central line thereof, the moving disc is provided with at least one first connecting hole, and the first connecting member sequentially penetrates through the arc-shaped hole and the corresponding first connecting hole to connect the rotating disc to the moving disc; the movable disc is provided with at least one key-shaped hole, the middle connecting plate is provided with at least one second connecting hole, and the second connecting piece sequentially penetrates through the key-shaped hole and the corresponding second connecting hole to be used for connecting the movable disc to the middle connecting plate.

In some embodiments, the rotating disc can be covered by the moving disc, and the scale marks for indicating the rotation angle of the rotating disc are arranged on the front surface of the moving disc on the outer side of the rotating disc.

In some embodiments, the pressing head is of a funnel-shaped structure, the bottom end of the pressing head is transversely provided with an avoiding groove communicated with the light through hole, and the material belt conveyed from the belt conveying assembly can extend out of the position right below the cutting device through the avoiding groove.

In some embodiments, the cutting device includes a first driving device and a cutting knife, the first driving device is vertically disposed on the belt feeding device, the cutting knife abuts against a side surface of the pressing head, and a top end of the cutting knife is connected to an output end of the first driving device so as to be driven by the first driving device to cut the material belt extending from the avoiding groove.

In some embodiments, the tape feeding device further comprises a second driving device and a mounting plate, the second driving device is disposed on the front surface of the sliding plate, and the output end can pass through the mounting plate; the mounting plate is vertically arranged, the back surface of the mounting plate is arranged on the second driving device, and the belt feeding assembly, the pressure head and the cutting device are transversely arranged on the front surface of the mounting plate side by side;

the belt conveying assembly comprises a driving gear, at least one driven gear, a double-sided roller set and an adjusting device, the driving gear is connected to the output end of the second driving device and driven by the output end to rotate, and each driven gear is arranged on the front face of the mounting plate and meshed with the driving gear to rotate along with the driving gear; each double-sided roller group comprises a fixed roller and a movable roller, and each fixed roller is coaxially arranged with the corresponding driven gear on the front surface of the corresponding driven gear and can synchronously rotate along with the driven gear; each movable roller is arranged on the corresponding adjusting device, and the movable rollers and the corresponding fixed rollers can extrude the material belt to convey the material belt; each adjusting device is arranged on the front surface of the mounting plate and used for adjusting the radial clearance between the corresponding movable roller and the corresponding fixed roller.

In some embodiments, the adjusting device comprises a first mounting seat, a second mounting seat and an adjusting mechanism, wherein the first mounting seat is arranged on the front surface of the mounting plate and is provided with a hook, and the second mounting seat is movably arranged on the front surface of the mounting plate; the adjusting mechanism can stretch out and draw back, one end of the adjusting mechanism is hung on the hook, and the other end of the adjusting mechanism is pivoted on the second mounting seat.

In some embodiments, the integrated laser continuous welding apparatus further comprises a connection plate connected to a rear surface of the press buffer apparatus for connecting the integrated laser continuous welding apparatus to a connection shaft of a robot or a three-axis platform.

In order to solve the technical problem, the invention also provides a battery assembling device, which adopts the following technical scheme: the battery assembling equipment comprises a moving device and the integrated laser continuous welding device, wherein the integrated laser continuous welding device is connected to the moving device to realize position movement.

Compared with the prior art, the integrated laser continuous welding device and the battery assembling equipment provided by the invention have the following main beneficial effects:

the integrated laser continuous welding device can realize the welding connection of a single target part and the material belt on the one hand and can also realize the serial-parallel connection mode among a plurality of target parts quickly by only changing the position of the whole welding device and adjusting the rotating device without replacing any part aiming at the product model change by replacing the material belt with the original connecting sheet and integrating the cutting device, the laser welding swinging head, the belt conveying device, the rotating device and the like together through the mutual matching of the devices, and can flexibly adjust the space among the welding positions and quickly modify the serial-parallel connection mode among the plurality of target parts; on the other hand, the overall structure is simple and compact by reasonable layout among the devices and the like.

Drawings

In order to illustrate the solution of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are some embodiments of the invention, and that other drawings may be derived from these drawings by a person skilled in the art without inventive effort. Wherein:

FIG. 1 is a schematic perspective view of an integrated laser continuous welding apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of the integrated laser continuous welding apparatus of FIG. 1 from another perspective;

FIG. 3 is a schematic perspective view of the push-down cushion of FIG. 2 with the connecting plate attached;

FIG. 4 is a schematic perspective view of a laser welding pendulum head of the integrated laser continuous welding apparatus of FIG. 2;

fig. 5 is a schematic perspective view of a rotating device of the integrated laser continuous welding apparatus of fig. 2;

FIG. 6 is a schematic perspective view of a ram of the integrated laser continuous welding apparatus of FIG. 1;

FIG. 7 is a schematic perspective view of the combination ram and cutting device of FIG. 1;

FIG. 8 is a schematic perspective view of the combination of the tape feeder, the ram, and the cutter of FIG. 1;

fig. 9 is a perspective view of the tape feeding apparatus of fig. 8;

fig. 10 is a perspective view of a main portion of an adjusting device of the tape feeding device of fig. 9;

fig. 11 is a perspective view of a feeding guard of the tape feeding apparatus of fig. 9.

The reference numbers in the drawings are as follows:

100. an integrated laser continuous welding device; 200. a material belt;

1. pressing the buffer device; 11. a sliding plate; 12. an intermediate connection plate; 121. a second connection hole; 13. a base plate; 14. a linear guide assembly; 141. a guide rail; 15. a buffer mechanism; 16. a limiting device;

2. a tape feeding device; 21. a tape feed assembly; 211. a driving gear; 212. a driven gear; 213. a double-sided roller set; 2131. fixing the roller; 2132. a movable roller; 214. an adjustment device; 2141. a first mounting seat; 2142. a second mounting seat; 2143. an adjustment mechanism; 2144. hooking; 2145. a protruding shaft; 2146. a second shaft; 215. a first shaft; 22. a second driving device; 221. installing a box; 23. mounting a plate; 24. a delivery guard; 241. a groove; 25. a protective cover;

3. a pressure head; 31. a light through hole; 32. an avoidance groove;

4. a rotating device; 41. rotating the disc; 411. an arc-shaped hole; 42. a movable tray; 421. a key-type hole; 422. a first connection hole; 43. scale marks are marked;

5. laser welding a swinging head; 51. a laser beam; 52. laser head swinging; 53. connecting the disc;

6. a cutting device; 61. a first driving device; 62. cutting knife; 63. a buffer;

7. a connecting plate.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, e.g., the terms "length," "width," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., refer to an orientation or position based on that shown in the drawings, are for convenience of description only and are not to be construed as limiting of the present disclosure.

The terms "including" and "having," and any variations thereof, in the description and claims of this invention and the description of the above figures are intended to cover non-exclusive inclusions; the terms "first," "second," and the like in the description and in the claims, or in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential order. In the description and claims of the present invention and in the description of the above figures, when an element is referred to as being "fixed" or "mounted" or "disposed" or "connected" to another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

It should be noted that the integrated laser continuous welding device 100 can achieve continuous laser welding and fast cutting of the material tape 200 and a welded product (such as a battery cell), and is mainly used in an assembling device of a lithium battery assembling module, specifically, can be used for automatically welding the material tape 200 with a plurality of side-by-side battery cell poles to achieve series-parallel connection of the battery cells, and certainly is not limited thereto. It is also noted that the "strip of material 200" described below is typically a strip of copper, although in practice other suitable strips may be used; the "target member" described below may be a battery cell in the present embodiment, but may actually be other suitable objects.

An embodiment of the present invention provides an integrated laser continuous welding device 100, as shown in fig. 1 and fig. 2, the integrated laser continuous welding device 100 includes a press buffer device 1, a tape feeder 2, a press head 3, a rotating device 4, a laser welding head oscillator 5, and a cutting device 6, where the press buffer device 1 is mainly used for enabling the press head 3 to press a tape 200 against a corresponding target (not shown), and specifically, in the process of pressing the press head 3, the press buffer device 1 can drive the tape feeder 2, the press head 3, the rotating device 4, the laser welding head oscillator 5, and the cutting device 6 to vertically move together to complete a pressing action, and also move each device to an initial position of each welding.

As shown in fig. 1 and 2, the belt feeding device 2 includes a belt feeding assembly 21, the pressing head 3 and the cutting device 6 are sequentially and transversely arranged side by side, the pressing buffer device 1, the rotating device 4 and the laser welding head 5 are sequentially and longitudinally arranged side by side, and the rotating device 4 and the laser welding head 5 are both located at the top end of the belt feeding device 2. obviously, the integrated laser continuous welding device 100 has a simple structure and good compactness through reasonable layout.

As shown in fig. 1 and 2, in order to drive the belt feeding device 2 and the like to vertically move together, the pressing buffer device 1 includes a sliding plate 11, wherein the sliding plate 11 is vertically disposed, and the sliding plate 11 can vertically slide. Specifically, in this embodiment, in order to simplify the structure and ensure the safety of operation, the push-down buffering device 1 further includes a bottom plate 13, a linear guide assembly 14, a buffering mechanism 15 and a limiting device 16, wherein the linear guide assembly 14 includes a guide rail 141, the guide rail 141 of the linear guide assembly 14 is disposed on the front surface of the bottom plate 13, the sliding plate 11 is slidably connected to the guide rail 141 through a slider (not shown), the buffering mechanism 15 is disposed on a side edge of the sliding plate 11 for buffering the push-down action of the push head 3, and the limiting device 16 is disposed on the top end of the bottom plate 13 to limit the upward movement position of the sliding plate 11, but actually, the push-down buffering device 1 may also be of other suitable structures.

In addition, in order to ensure the entire integrated continuous laser welding apparatus to be movable, the rear surface of the push buffer device 1 is provided on a moving device (not shown), and specifically, the rear surface of the base plate 13 may be mounted on the moving device. It should be noted that, in order to realize continuous welding, as shown in fig. 1 and 2, the integrated laser continuous welding apparatus 100 further includes a connecting plate 7, wherein the connecting plate 7 is connected to the back surface of the push down buffer 1, specifically, to the back surface of the bottom plate 13, so that the integrated laser continuous welding apparatus 100 can be connected to a moving device, such as a connecting shaft of a robot or a three-axis platform, through the connecting plate 7. Of course, in theory, the integrated laser continuous welding apparatus 100 can also be directly connected to the moving apparatus through the push-down buffer apparatus 1. Like this, through the installation with the mobile device cooperation, this integrated form laser continuous welding device 100 can remove to arbitrary target position under the drive of mobile device, compresses tightly material area 200 and realizes the welded connection of target and material area 200, and obviously, can realize the series-parallel connection of arbitrary quantity target, and then can realize module utmost point post welding on a large scale.

As further shown in fig. 1 and 2, the tape feeding device 2 is disposed on the front surface of the sliding plate 11, and is mainly used for conveying the tape 200 to the bottom end of the press head 3 through the tape feeding assembly 21. The pressure head 3 is vertically arranged at the bottom end of the belt conveying device 2 and is mainly used for pressing the belt 200 conveyed by the belt conveying assembly 21 on a target part, and the middle part of the pressure head 3 is provided with the light through hole 31, so that the laser beam 51 emitted by the laser welding swinging head 5 passes through the light through hole 31, and then the part of the belt 200 pressed by the pressure head 3 in the range limited by the light through hole 31 is welded on the corresponding target part, thereby realizing the welding connection of the belt 200 and the single target part.

As shown in fig. 1 and 2, one side of the rotating device 4 is disposed on the front surface of the sliding plate 11, and the laser welding pendulum head 5 is disposed on the other side of the rotating device 4, so that the welding range and the welding position of the laser welding pendulum head 5 can be adjusted by adjusting the rotating device 4, and/or the focal length and the deflection angle of the laser beam 51 of the laser welding pendulum head 5 can be adjusted, thereby ensuring that the integrated continuous laser welding device can meet the welding requirements of different modules, and further improving the compatibility thereof. In addition, as shown in fig. 1 and 2, a cutting device 6 is provided at the bottom end of the tape feeding device 2, so that the cutting device 6 can be used to cut the tape 200 protruding from the ram 3 toward the cutting device 6 when necessary.

It is understood that the working principle of the integrated laser continuous welding device 100 is substantially as follows: the integrated laser continuous welding device 100 can be driven by a moving device to move to a corresponding target position; then, according to the requirements of different modules, adjusting the rotating device 4 to adjust the welding range of the laser welding swing head 5 and/or the focal length of laser; then, under the driving of the downward pressing buffer device 1, the belt conveying device 2, the pressure head 3, the rotating device 4, the laser welding swinging head 5 and the cutting device 6 move towards the target piece together, and finally the pressure head 3 presses the belt 200 conveyed by the belt conveying device 2 against the corresponding target piece; then, the laser beam 51 emitted by the laser welding swinging head 5 can weld the part of the tape 200 pressed by the pressing head 3 on the target part in the light through hole 31, wherein the tape 200 can be cut off by the cutting device 6 at any time under any required condition as long as the pressing head 3 presses the tape 200 on the target part; after completing the welding connection of one target piece, the integrated laser continuous welding device 100 can be moved to the next target piece again by the moving device, and then the above-mentioned welding continuous action is executed, so as to realize the continuous welding connection of a plurality of target pieces and the material belt 200, and flexibly realize different series-parallel connection.

In summary, compared with the prior art, the integrated laser continuous welding device 100 has at least the following beneficial effects: the integrated laser continuous welding device 100 can realize the welding connection of a single target part and the material belt 200 on the one hand and can also realize the series-parallel connection mode among a plurality of target parts rapidly by connecting the cutting device 6, the laser welding swinging head 5, the belt conveying device 2, the rotating device 4 and the like together by replacing the original connecting sheet with the material belt 200 and integrating the cutting device 6, the laser welding swinging head 5, the belt conveying device 2, the rotating device 4 and the like together through the mutual matching of the devices, and the device can realize the welding connection of the single target part and the material belt 200 on the other hand by connecting the single target part with the moving device (not shown in the figure) aiming at the product model change without replacing any parts, only changing the position of the whole welding device and adjusting the rotating device 4, flexibly adjusting the space among all welding positions and further realizing the continuous cutting of the material belt 200, thereby having good compatibility, low model change cost, short assembly and debugging time, low assembly cost and high production efficiency; on the other hand, the overall structure is simple and compact by reasonable layout among the devices and the like.

In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 11.

In some embodiments, as shown in fig. 1 to 3, the downforce buffer device 1 generally further comprises an intermediate connecting plate 12 disposed on the front surface of the sliding plate 11, wherein the intermediate connecting plate 12 is located above the belt feeding device 2. As shown in fig. 2 and fig. 3, the rotating device 4 includes a rotating disc 41 and a moving disc 42, wherein the front surface of the rotating disc 41 is provided with the laser welding swing head 5, and the rotating disc 41 can rotate relative to the moving disc 42 to drive the laser welding swing head 5 to swing, so as to adjust the welding range and the welding position of the laser welding swing head 5 in the light passing hole 31, and reduce the laser high-return burned optical fibers. Correspondingly, as shown in fig. 2 and 3 again, the moving plate 42 is parallel to the rotating plate 41 in the longitudinal direction, the front surface of the moving plate 42 is disposed on the rear surface of the rotating plate 41, the rear surface of the moving plate 42 is disposed on the front surface of the intermediate connection plate 12, and the moving plate 42 is movable laterally (specifically, leftwardly and rightwardly) with respect to the sliding plate 11 to adjust the focal length and the deflection angle of the laser beam 51 emitted from the laser welding head 5.

Specifically, in the present embodiment, as shown in fig. 2 and 4, the laser welding head 5 includes a laser head 52 and a connection pad 53, wherein the laser head 52 can reflect the laser beam 51, the laser head 52 is connected to the front surface of the connection pad 53, the back surface of the connection pad 53 is connected to the front surface of the rotating disk 41, that is, the laser welding head 5 is connected to the front surface of the rotating disk 41 through the connection pad 53. Wherein, the connecting disc 53, the rotating disc 41, the moving disc 42, the intermediate connecting plate 12 and the sliding plate 11 are sequentially and longitudinally connected side by side.

It can be understood that, in the present embodiment, the rotating disc 41 may be rotated to drive the laser swing head 52 to swing through the connecting disc 53, so as to adjust the welding range and the welding position of the laser beam 51 in the light passing hole 31, and then the moving disc 42 is moved relative to the rotating disc 41, so as to drive the laser swing head 52 to move laterally through the rotating disc 41, so as to adjust the focal length and the deflection angle of the laser beam 51, and further ensure the laser beam 51 to be welded in a centered manner, so that the welding range and the welding position of the laser welding swing head 5, and the focal length and the deflection angle of the laser beam 51 may be quickly and effectively adjusted through the combined use of the rotating disc 41 and the moving disc 42 in the rotating device 4, so as to ensure that the laser welding swing head 5 can perform welding according to different product requirements, thereby improving the compatibility of the integrated continuous laser welding device.

In some embodiments, as shown in fig. 5, to simplify the structure and reduce the cost, the rotating device 4 further includes a first connecting member (not shown) and a second connecting member (not shown), wherein the rotating disc 41 has at least one arc-shaped hole 411 formed around a central line thereof, the moving disc 42 has at least one first connecting hole 422 formed thereon, and the first connecting member (not shown) sequentially passes through the arc-shaped hole 411 and the corresponding first connecting hole 422 to connect the rotating disc 41 to the moving disc 42. It will be appreciated that in actual use, the relative rotation between the rotating disk 41 and the moving disk 42 can be achieved by loosening the first connecting member to release the fixed connection between the rotating disk 41 and the moving disk 42, then manually rotating the rotating disk 41, and finally fastening the first connecting member to fixedly connect the rotating disk 41 to the moving disk 42 before welding.

Correspondingly, in order to realize the relative movement between the moving plate 42 and the middle connecting plate 12, as shown in fig. 5, at least one key-shaped hole 421 is formed on the moving plate 42, and correspondingly, as shown in fig. 3, at least one second connecting hole 121 is formed on the middle connecting plate 12, and a second connecting member (not shown) sequentially passes through the key-shaped hole 421 and the corresponding second connecting hole 121 to connect the moving plate 42 to the middle connecting plate 12. Similarly, it will be appreciated that relative movement between the movable plate 42 and the intermediate link plate 12 may be achieved by loosening the second connector to release the fixed connection between the movable plate 42 and the intermediate link plate 12, then manually moving the movable plate 42 laterally, and finally tightening the second connector to fixedly connect the movable plate 42 to the intermediate link plate 12 prior to welding.

Specifically, in the present embodiment, as shown in fig. 5, the rotating disc 41 is provided with 4 arc-shaped holes 411, correspondingly, the moving disc 42 is provided with 4 first connecting holes 422, and the arc-shaped holes 411 and the first connecting holes 422 are uniformly arranged around the center line of the rotating disc 41. As shown in fig. 5, the movable plate 42 is provided with 4 key holes 421, and each key hole 421 is located at the periphery of the first connection hole 422, as shown in fig. 3, the middle connection plate 12 is provided with 4 second connection holes 121, and each key hole 421 corresponds to one second connection hole 121. In addition, in the present embodiment, the first connecting member and the second connecting member are generally screw members, such as screws, bolts, and the like.

In some embodiments, as shown in fig. 5, to make the overall structure simpler and more compact, the rotating disc 41 can be covered by a moving disc 42, specifically in this embodiment, the rotating disc 41 is a circular disc, and the moving disc 42 is a square disc, wherein the diameter of the rotating disc 41 is equal to or less than the length of the moving disc 42. As shown in fig. 5, a scale mark 43 is disposed on the front surface of the movable plate 42 outside the rotary plate 41, wherein the scale mark 43 is mainly used for indicating the rotation angle of the rotary plate 41 when the rotary plate 41 is manually rotated, so as to more precisely adjust the welding range of the laser welding head 5 and improve the overall welding precision.

In some embodiments, the ram 3 is funnel-shaped for simplicity of construction, as shown in figure 6, although in practice the ram 3 may be of other suitable configurations. As shown in fig. 6, an avoiding groove 32 is transversely formed at the bottom end of the pressing head 3, wherein the avoiding groove 32 is communicated with the light through hole 31; as shown in fig. 2, 6 and 8, the tape 200 conveyed from the tape feeding unit 21 can be extended to a position right below the cutter 6 through the escape groove 32. To improve the overall welding quality, the material tape 200 may be generally adapted to the avoiding groove 32, and the structural shape and size of the bottom end of the indenter 3 are respectively adapted to the shape and size of the target member (e.g., a battery cell).

It is understood that the tape 200 is received in the escape slot 32 during the transfer process. When welding is needed, the pressing head 3 may be moved to a target position, and the pressing head 3 is pressed against a corresponding target component (e.g., a battery cell) under the action of the pressing buffer device 1, so that the tape 200 at the bottom end of the pressing head 3 is welded to the corresponding target component at a position corresponding to the light passing hole 31 by the laser beam 51 in the light passing hole 31. Obviously, can realize the independent welding of material area 200 and single target piece, and need not to press a section of thick bamboo clamp plate, can weld a material area 200 on different target pieces in succession promptly according to actual need, so, the series-parallel connection of electric core utmost point post is very nimble.

In some embodiments, as shown in fig. 1, 7 and 8, the cutting device 6 includes a first driving device 61 and a cutting blade 62, wherein the first driving device 61 is vertically disposed on the tape feeding device 2, and specifically, the first driving device 61 is vertically disposed on the mounting plate 23 of the tape feeding device 2. The side wall of the cutting knife 62 abuts against the side face of the pressure head 3, and the top end of the cutting knife 62 is connected with the output end of the first driving device 61, so that the first driving device 61 drives to cut the material belt 200 extending out of the avoiding groove 32. In the present embodiment, the first driving device 61 is a driving cylinder, but in practice, the first driving device 61 may also be other suitable driving devices. As shown in fig. 7 and 8, the cutting device 6 further includes a buffer 63 to limit and buffer the cutting action of the cutting blade 62.

As can be appreciated, for a row of target components (e.g., battery cells), in order to ensure the welding quality, before welding is prepared, it is usually ensured that a part of the material tape 200 extends from the avoiding groove 32 of the pressing head 3 to the lower side of the cutting device 6, then the first welding of the material tape 200 and the first target component is performed, then the integrated continuous laser welding device 100 is moved to a target position as required, and then the material tape 200 subsequently fed by the tape feeding device 2 is welded on the corresponding target component by the laser welding swinging head 5 of the integrated continuous laser welding device 100, so as to achieve series-parallel welding connection of the corresponding target components, and after the series-parallel welding of the whole row of target components is completed, the material tape 200 is cut by the cutting device 6, obviously, the cutting device 6 can cut off the material tape 200 connecting between two adjacent target components as required. In short, the cutting device 6 can flexibly cut off the material tape 200 according to the requirement to meet different series-parallel connection requirements.

In some embodiments, as shown in fig. 2, 8 and 9, the tape feeder 2 further comprises a second driving device 22 and a mounting plate 23, wherein the second driving device 22 is disposed on the front surface of the sliding plate 11, and the output end of the second driving device 22 can pass through the mounting plate 23, specifically, the second driving device 22 comprises a driving body (not shown) which is typically a stepping motor, and a mounting box 221, but may be other suitable driving bodies in practice; as shown in fig. 8 and 9, in order to make the overall structure more compact, the mounting plate 23 is vertically disposed, the back surface of the mounting plate 23 is disposed on the second driving device 22, specifically, on the front surface of the mounting box 221, and the belt feeding assembly 21, the pressing head 3 and the cutting device 6 are transversely disposed side by side on the front surface of the mounting plate 23.

As shown in fig. 8 and 9, to realize the conveying of the tape 200, the tape feeding assembly 21 includes a driving gear 211, a driven gear 212, a double-sided roller set 213 and an adjusting device 214, wherein at least one of the driven gear 212, the double-sided roller set 213 and the adjusting device 214 is provided, and the three are generally in one-to-one correspondence. As shown in fig. 8 and 9, the driving gear 211 is connected to the output end of the second driving device 22 and is driven by the output end to rotate, and each of the driven gears 212 is disposed on the front surface of the mounting plate 23 and engaged with the driving gear 211 to rotate with the driving gear 211. That is, the belt feeding assembly 21 employs a gear transmission.

As shown in fig. 8 and 9, each of the double-sided roller sets 213 includes a fixed roller 2131 and a movable roller 2132, wherein each of the fixed rollers 2131 is coaxially disposed with the driven gear 212 on the front surface of the corresponding driven gear 212, and can rotate synchronously with the driven gear 212. Correspondingly, each movable roller 2132 is disposed on the corresponding adjusting device 214, and each movable roller 2132 and the corresponding fixed roller 2131 can extrude the material tape 200 to convey the material tape 200, that is, the material tape 200 is conveyed by the friction force between each fixed roller 2131 and the corresponding movable roller 2132. Each adjusting device 214 is disposed on the front surface of the mounting plate 23, and is mainly used for adjusting a radial gap between the corresponding movable roller 2132 and the corresponding fixed roller 2131.

It is understood that the tape 200 is located between the fixed rollers 2131 and the corresponding movable rollers 2132, and the tape feeding device 2 can allow a slightly larger radial gap to exist between the movable rollers 2132 and the corresponding fixed rollers 2131 through the adjusting device 214, so as to facilitate the placement of the tape 200 between the movable rollers 2132 and the corresponding fixed rollers 2131; then, the adjusting device 214 ensures that the movable roller 2132 and the corresponding fixed roller 2131 can mutually extrude the material belt 200 therebetween; then, the second driving device 22 is activated, and the driving gear 211 is driven by the output end thereof to rotate, so as to drive each driven gear 212 engaged therewith to rotate, and further drive the corresponding fixed roller 2131 to rotate through each driven gear 212, so that under the action of friction force, the corresponding movable roller 2132 also rotates, and thus, under the action of the relative friction force between the fixed roller 2131 and the corresponding movable roller 2132, the tape 200 can be conveyed to one side of the pressing head 3.

Specifically, in the present embodiment, as shown in fig. 8 and 9, the tape feeding assembly 21 further includes at least one first shaft 215, wherein each first shaft 215 is protruded on the front surface of the mounting plate 23, each first shaft 215 is rotatably connected to a corresponding driven gear 212 and a fixed roller 2131, and the fixed roller 2131 is fixedly connected to the front surface of the corresponding driven gear 212, so as to rotate synchronously with the driven gear 212. As shown in fig. 8 and 9, in order to protect the conveyed tape 200, the tape feeder 2 further includes a feeding protector 24, wherein the feeding protector 24 is located between the tape feeding assembly 21 and the pressing head 3, and a groove 241 for accommodating the tape 200 is formed on a side of the feeding protector 24 close to the tape 200, so that the tape 200 is not exposed outside. In addition, in order to protect the tape feeding assembly 21 and improve the safety of the tape feeding device 2, as shown in fig. 1 and 5, the tape feeding device 2 further includes a protective cover 25, wherein the protective cover 25 is disposed on the front surface of the mounting plate 23 and mainly used for covering the gears and the rollers.

In some embodiments, as shown in fig. 8 and fig. 9, in order to adjust a radial gap between the movable roller 2132 and the corresponding fixed roller 2131 to facilitate the assembly and disassembly of the tape 200, the adjusting device 214 includes a first mounting seat 2141, a second mounting seat 2142, and an adjusting mechanism 2143, wherein the first mounting seat 2141 is disposed on a front surface of the mounting plate 23, and a hook 2144 is disposed on a side of the first mounting seat 2141 away from the tape 200, and correspondingly, the second mounting seat 2142 is movably disposed on a front surface of the mounting plate 23, in this embodiment, a protruding shaft 2145 is protruded toward the mounting plate 23 on the second mounting seat 2142, and the second mounting seat 2142 is rotatably connected to the mounting plate 23 through the protruding shaft 2145. In addition, the adjusting device 214 further includes a second shaft 2146, wherein the second mounting seat 2142 is provided with the second shaft 2146, and the movable roller 2132 can be rotatably connected to the second mounting seat 2142 through the second shaft 2146.

To achieve adjustment, the adjusting mechanism 2143 can extend and contract, and as shown in fig. 8 and 9, one end of the adjusting mechanism 2143 is hung on the hook 2144, and the other end is pivoted to the second mounting base 2142. Thus, by adjusting one end of the adjusting mechanism 2143, the movable roller 2132 can be gradually separated from the corresponding fixed roller 2131, so as to facilitate the assembly and disassembly of the tape 200, and correspondingly, by adjusting one end of the adjusting mechanism 2143, the movable roller 2132 and the corresponding fixed roller 2131 can be ensured to press the tape 200, so as to realize the friction transmission of the tape 200. In practice, however, the tape feeder 2 may have any other suitable structure.

Based on the above-mentioned integrated laser continuous welding device 100, the embodiment of the present invention further provides a battery assembling apparatus (not shown), wherein the battery assembling apparatus includes a moving device (not shown), the battery assembling apparatus further includes the above-mentioned integrated laser continuous welding device 100, and the integrated laser continuous welding device 100 is connected to the moving device to realize the position movement. In the present embodiment, the moving device may be a three-axis platform or a robot device, and specifically, the three-axis platform or the robot device is connected to the connecting plate 7 of the integrated laser continuous welding device 100 or directly connected to the bottom plate 13 of the push buffer device 1.

In summary, compared with the prior art, the battery assembling equipment at least has the following beneficial effects: by adopting the integrated laser continuous welding device 100, when a product is transformed, any part does not need to be replaced, the target part of welding connection can be randomly changed only by changing the position of the whole welding device and adjusting the rotating device 4, so that the distance between the welding positions can be flexibly adjusted, and the series-parallel connection mode among a plurality of target parts can be rapidly modified.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The integrated laser continuous welding device (100) is characterized by comprising a downward pressing buffer device (1), a belt conveying device (2), a pressure head (3), a rotating device (4), a laser welding swinging head (5) and a cutting device (6), wherein the belt conveying device (2) is driven by the downward pressing buffer device (1) to vertically move together, the belt conveying device (2) comprises a belt conveying assembly (21), the pressure head (3) and the cutting device (6) are sequentially and transversely arranged side by side, the downward pressing buffer device (1), the rotating device (4) and the laser welding swinging head (5) are sequentially and longitudinally arranged side by side, and the rotating device (4) and the laser welding swinging head (5) are located at the top end of the belt conveying device (2);

the downward pressing buffer device (1) is connected to the moving device and comprises a vertically arranged sliding plate (11) capable of vertically sliding;

the belt feeding device (2) is arranged on the front surface of the sliding plate (11) and is used for conveying a material belt (200) to the bottom end of the pressing head (3) through the belt feeding assembly (21);

the pressing head (3) is vertically arranged at the bottom end of the belt conveying device (2) and is used for pressing the material belt (200) conveyed by the belt conveying assembly (21) on a target part; the middle part of the pressure head (3) is provided with a light through hole (31);

one side of the rotating device (4) is arranged on the front surface of the sliding plate (11) and is used for adjusting the welding range and position of the laser welding swing head (5) and/or the focal length and deflection angle of the laser beam (51);

the laser beam (51) emitted by the laser welding swinging head (5) penetrates through the light through hole (31), and the laser welding swinging head (5) is arranged on the other side of the rotating device (4) and used for welding the material belt (200) pressed by the pressing head (3) on the corresponding target part within the range limited by the light through hole (31);

the cutting device (6) is arranged at the bottom end of the belt conveying device (2) and is used for cutting the material belt (200) when needed.

2. The integrated laser continuous welding device (100) according to claim 1, characterized in that the pressing buffer device (1) further comprises an intermediate connecting plate (12) arranged on the front surface of the sliding plate (11), the rotating device (4) comprises a rotating disc (41) and a moving disc (42) parallel to the rotating disc (41), the front surface of the rotating disc (41) is provided with the laser welding oscillating head (5), and the laser welding oscillating head (5) can rotate relative to the moving disc (42) to oscillate the laser welding oscillating head; the moving plate (42) has a front surface disposed on the rear surface of the rotating plate (41) and a rear surface disposed on the front surface of the intermediate connecting plate (12), and is laterally movable with respect to the sliding plate (11) to adjust the focal length and the deflection angle of the laser beam (51).

3. The integrated laser continuous welding device (100) according to claim 2, characterized in that the rotating device (4) further comprises a first connecting member and a second connecting member, the rotating disc (41) is provided with at least one arc-shaped hole (411) around the center line thereof, the moving disc (42) is provided with at least one first connecting hole (422), and the first connecting member sequentially passes through the arc-shaped hole (411) and the corresponding first connecting hole (422) for connecting the rotating disc (41) to the moving disc (42); the movable disc (42) is provided with at least one key-shaped hole (421), the middle connecting plate (12) is provided with at least one second connecting hole (121), and the second connecting piece sequentially penetrates through the key-shaped hole (421) and the corresponding second connecting hole (121) and is used for connecting the movable disc (42) to the middle connecting plate (12).

4. The integrated laser continuous welding device (100) according to claim 2, characterized in that the rotating disc (41) can be covered by the moving disc (42), and outside the rotating disc (41), a scale mark (43) for indicating the rotation angle of the rotating disc (41) is provided on the front surface of the moving disc (42).

5. The integrated laser continuous welding device (100) according to claim 1, wherein the pressing head (3) is funnel-shaped, an avoiding groove (32) communicated with the light passing hole (31) is transversely formed at the bottom end of the pressing head (3), and the material belt (200) conveyed from the belt conveying assembly (21) can extend to a position right below the cutting device (6) through the avoiding groove (32).

6. The integrated laser continuous welding device (100) according to claim 5, characterized in that the cutting device (6) comprises a first driving device (61) and a cutting knife (62), the first driving device (61) is vertically arranged on the belt feeding device (2), the cutting knife (62) abuts against the side surface of the pressing head (3), and the top end of the cutting knife is connected with the output end of the first driving device (61) to cut the material belt (200) extending from the avoiding groove (32) driven by the first driving device (61).

7. The integrated laser continuous welding device (100) according to any one of claims 1 to 6, characterized in that the tape feeder (2) further comprises a second driving device (22) and a mounting plate (23), the second driving device (22) being arranged on the front face of the sliding plate (11) and the output end being capable of passing through the mounting plate (23); the mounting plate (23) is vertically arranged, the back surface of the mounting plate is arranged on the second driving device (22), and the belt feeding assembly (21), the pressing head (3) and the cutting device (6) are transversely arranged on the front surface of the mounting plate (23) side by side;

the belt feeding assembly (21) comprises a driving gear (211), at least one driven gear (212), a double-sided roller set (213) and an adjusting device (214), the driving gear (211) is connected to the output end of the second driving device (22) and driven by the output end to rotate, and each driven gear (212) is arranged on the front face of the mounting plate (23) and meshed with the driving gear (211) to rotate along with the driving gear (211); each double-sided roller group (213) comprises a fixed roller (2131) and a movable roller (2132), and each fixed roller (2131) is coaxially arranged with the driven gear (212) on the front surface of the corresponding driven gear (212) and can synchronously rotate along with the driven gear (212); each movable roller (2132) is arranged on the corresponding adjusting device (214), and the movable rollers and the corresponding fixed rollers (2131) can extrude the material belt (200) to convey the material belt (200); each adjusting device (214) is arranged on the front surface of the mounting plate (23) and is used for adjusting the radial clearance between the corresponding movable roller (2132) and the corresponding fixed roller (2131).

8. The integrated laser continuous welding device (100) according to claim 7, characterized in that the adjusting device (214) comprises a first mounting seat (2141), a second mounting seat (2142) and an adjusting mechanism (2143), the first mounting seat (2141) is arranged on the front face of the mounting plate (23) and is provided with a hook (2144), and the second mounting seat (2142) is movably arranged on the front face of the mounting plate (23); the adjusting mechanism (2143) can stretch out and draw back, one end of the adjusting mechanism is hung on the hook (2144), and the other end of the adjusting mechanism is pivoted on the second mounting seat (2142).

9. The integrated laser continuous welding device (100) according to any one of claims 1 to 6, characterized in that the integrated laser continuous welding device (100) further comprises a connecting plate (7), the connecting plate (7) is connected to the back surface of the press buffer device (1) for connecting the integrated laser continuous welding device (100) to a connecting shaft of a robot or a three-axis platform.

10. A battery assembly apparatus comprising a moving device, characterized in that it further comprises an integrated laser continuous welding device (100) according to any one of claims 1 to 9, said integrated laser continuous welding device (100) being connected to said moving device for positional movement.

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