CN212977112U

CN212977112U - Battery laser welding device

Info

Publication number: CN212977112U
Application number: CN202021771914.5U
Authority: CN
Inventors: 车荣泓; 郭明华; 李隽�
Original assignee: Zhongshan Hantong Laser Science Co ltd
Current assignee: Zhongshan Hantong Laser Science Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-04-16
Anticipated expiration: 2030-08-21

Abstract

The utility model provides a battery laser welding device, including being used for placing the workstation of battery module and electrode slice and locating the welding seat on the workstation, be equipped with on the welding seat and be used for welding the electrode slice on the terminal of battery module so that the electrode slice establishes ties the battery module or parallelly connected laser welder head that gets up, one side of laser welder head is equipped with the Z axle motion that can follow the workstation and is used for compressing tightly the closing device on the battery module with the electrode slice, closing device includes the depression bar, locate the depression bar tip and be used for the compact heap that compresses tightly the electrode slice with locating on the welding seat and be used for driving the drive assembly that compresses tightly of depression bar motion, be equipped with the welding passageway that supplies the laser of laser welder head to pass on the compact. The pressing driving assembly drives the pressing block to be pressed at the position where the electrode plate and the battery module need to be welded in a targeted mode, so that the electrode plate is pressed on the terminal end of the corresponding battery module in a targeted mode, close contact of the electrode plate and the terminal end of the corresponding battery module is guaranteed, and the situations of insufficient soldering and missing soldering are avoided.

Description

Battery laser welding device

[ technical field ] A method for producing a semiconductor device

The utility model relates to a battery laser welding device.

[ background of the invention ]

Compared with the traditional arc welding technology, the laser welding technology has the heat input amount of only one tenth or even less of the latter, is very suitable for welding thin-wall parts, and can reduce the thermal deformation of the thin-wall parts in a limited way. However, since laser welding does not introduce extraneous fillers, the welding process requires maintaining intimate contact between the parts to be welded. When carrying out power laminate polymer battery PACK's welding process, need with the electrode slice welding on the terminal of battery module, so that establish ties or parallelly connected the play through the electrode slice between each battery module, if directly adopt big clamp plate to compress tightly the location with the mode of all electrode slices pressfitting between corresponding battery module during the welding, then there is the plane error difference because of every battery module and probably leads to certain piece or several certain electrode slices not to be compressed tightly the condition appearance on corresponding battery module, thereby lead to the condition appearance of rosin joint or hourglass welding, the welded effect has been influenced.

[ Utility model ] content

The to-be-solved technical problem of the utility model is to provide a battery laser welding device that can guarantee to compress tightly effect and welding effect.

The purpose of the utility model is realized like this:

the utility model provides a battery laser welding device, is including being used for placing the workstation of battery module and electrode slice and locating welding seat on the workstation, be equipped with on the welding seat and be used for welding the electrode slice on the terminal of battery module so that the electrode slice with the battery module establish ties or parallelly connected laser welder head that gets up, one side of laser welder head is equipped with and follows the Z axle motion of workstation and be used for compressing tightly closing device on the battery module with the electrode slice, closing device includes the depression bar, locates the depression bar tip just is used for the compact heap that compresses tightly the electrode slice with locating just be used for the drive on the welding seat the drive assembly that compresses tightly of depression bar motion, be equipped with the confession on the compact heap the welding passageway that laser of laser welder head passed.

The above structure is adopted in the utility model, compress tightly the direction motion of drive assembly drive depression bar along the Z axle, thereby the drive compact heap is pointed to compressing tightly and needs welded position department at electrode slice and battery module, thereby it is pointed to compress tightly the electrode slice on the terminal of corresponding battery module, thereby guarantee its in close contact with, laser welder head is the welding passageway on the accessible compact heap and carries out laser butt fusion welding to the electrode slice this moment, because electrode slice and corresponding wiring end in close contact with that needs welded battery module, thereby welded effect has been guaranteed, the condition of having avoided rosin joint and hourglass to weld appears.

According to the battery laser welding device, the compression rod comprises an upper rod and a lower rod which are integrally formed and connected end to end, the upper rod is L-shaped, the end part of the long edge of the upper rod is connected with the compression driving assembly, the lower rod is V-shaped, the upper end of the lower rod is connected with the end part of the short edge of the upper rod, the compression block is arranged at the lower end of the lower rod, and therefore the compression block is located under the laser welding head, and meanwhile, the compression rod can guarantee the pressing force of the compression block due to the adoption of the structure, and the compression effect of the compression block is improved.

According to the battery laser welding device, the guide rail is arranged on the welding seat, the sliding block in sliding connection with the guide rail is arranged on the pressing rod, and the stability of the pressing rod moving along the Z axis can be improved through the sliding guide effect of the sliding block and the guide rail.

According to the battery laser welding device, the pressing driving assembly comprises a fixed seat fixedly arranged on the welding seat, a driving cylinder arranged on the fixed seat and a transmission rod arranged between the output end of the driving cylinder and the end part of the pressing rod, and the driving cylinder drives the transmission rod to move up and down so as to drive the pressing rod and the pressing block to move along the Z-axis direction of the workbench.

The utility model provides a battery laser welding device, be equipped with on the workstation with the parallel first slide of X axle of workstation, slidable are located on the first slide and with the parallel support of Z axle of workstation with locate on the support and with the parallel second slide of Y axle of workstation, be equipped with on the first slide and be used for the drive the support is followed the first sliding drive device of the endwise slip of first slide, the welding seat slidable is located on the second slide, be equipped with on the second slide and be used for the drive the welding seat is followed the endwise slip's of second slide second sliding drive arrangement can drive the welding seat through first sliding drive arrangement and second sliding drive arrangement and move along the X axle and the Y axle direction of workstation to accomplish the weldment work to all battery modules on the workstation.

According to the battery laser welding device, the support is provided with the third sliding driving device for driving the second sliding seat to slide along the axial direction of the support, and the third sliding driving device can drive the welding seat to move along the Z-axis direction of the workbench, so that the heights of the laser welding head and the pressing device are adjusted to adapt to different types of battery modules.

According to the battery laser welding device, the pressing block is provided with the two welding channels which are arranged in parallel, and the laser welding head performs 2 times of laser welding on the electrode plate through the two welding channels on the pressing block, so that the welding firmness is improved.

[ description of the drawings ]

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the welding seat of the present invention;

fig. 3 is a schematic structural diagram of the compressing device of the present invention.

[ detailed description ] embodiments

The utility model provides a battery laser welding device, including being used for placing the workstation 1 of battery module and electrode slice and locating the welding seat 2 on the workstation 1, be equipped with on the welding seat 2 and be used for welding the electrode slice on the terminal of battery module so that the electrode slice with the battery module establish ties or parallelly connected laser welder head 3 that gets up, one side of laser welder head 3 is equipped with can follow the Z axle motion of workstation 1 and is used for compressing tightly closing device 4 on the battery module with the electrode slice, closing device 4 includes depression bar 41, locate depression bar 41 tip and be used for the compact heap 42 that compresses tightly the electrode slice with locate on the welding seat 2 and be used for driving the drive assembly 43 that compresses tightly of depression bar 41 motion, be equipped with the welding passageway 421 that the laser that supplies laser welder head 3 to pass on the compact.

In order to ensure the pressing force on the pressing block 42 and ensure that the pressing block is positioned right below the laser welding head 3, the pressing rod 41 comprises an upper rod 411 and a lower rod 412 which are integrally formed and connected end to end, the upper rod 411 is L-shaped, the end part of the long edge of the upper rod is connected with the pressing driving component 43, the lower rod 412 is V-shaped, the upper end of the lower rod is connected with the end part of the short edge of the upper rod 411, and the pressing block 42 is arranged at the lower end of the lower rod.

In order to improve the stability of the motion of the pressing rod 41 along the Z-axis, the welding seat 2 is provided with a guide rail 21, and the pressing rod 41 is provided with a sliding block 410 which is slidably connected with the guide rail 21.

The pressing driving assembly 43 is fixedly arranged on a fixed seat 431 on the welding seat 2, a driving cylinder 432 arranged on the fixed seat 431, and a transmission rod 433 arranged between the output end of the driving cylinder 432 and the end of the pressing rod 41.

For realizing the diaxon linkage, be equipped with the first slide 11 parallel with the X axle of workstation 1 on the workstation 1, locate on first slide 11 and with the Z axle parallel's of workstation 1 support 12 and locate on support 12 and with the Y axle parallel's of workstation 1 second slide 13 slidably, be equipped with on first slide 11 and be used for driving support 12 along the first slide 11 axial slip's of first slide 14 first slide drive arrangement, on second slide 13 is located to weld holder 2 slidable, be equipped with on second slide 13 and be used for driving weld holder 2 along the second slide 13 axial slip's of second slide 15.

In order to adjust the height of the laser welding head 3 and the pressing device 4 to suit different types of battery modules, the support 12 is provided with a third slide driving device 16 for driving the second slide 13 to slide along the axial direction of the support 12.

In order to improve the welding firmness, two welding channels 421 are arranged on the pressing block 42, and the two welding channels 421 are arranged in parallel.

The utility model discloses during the use, the endwise slip of support 12 is followed to third slide drive 16 drive second slide 13, thereby make weld holder 2 along the Z axle motion of workstation 1 and adjust laser welder head 3 and closing device 4 to the height of adaptation, the endwise slip of first slide 11 is followed to first slide drive 14 drive support 12, the endwise slip of second slide 13 is followed to second slide drive 15 drive weld holder 2, thereby drive laser welder head 3 (laser welder head 3 can adopt 30AH series high power welding galvanometer external member, it moves on the working plane through inside two sets of reflection lens control laser beams, closing device 4 installs beside the galvanometer, can utilize the galvanometer to accomplish the specific welding bead welding of compressing tightly part after compressing tightly, if adopt general fixed focus welder head, still need install an XY motion axle on this installation basis and guide the welder head motion to accomplish established local welding orbit.) and closing device 4 along the X axle and the closing device of workstation The Y-axis direction moves, so that the pressing block 42 and the laser welding head 3 move to the position right above the electrode plate and the battery module to be welded, at this time, the driving cylinder 432 drives the driving rod 433 to move downwards, so that the driving pressing rod 41 and the pressing block 42 move along the Z-axis direction of the workbench and press the electrode plate to be welded on the terminal of the corresponding battery module, then the laser welding head 3 emits laser and performs laser fusion welding on the electrode plate and the terminal of the corresponding battery module through the welding channel 421 on the pressing block 42 (after the pressing device 4 presses, the welding vibrating mirror of the laser welding head 3 guides the electrode plate to complete welding bead welding in a preset form at the pressing position), so that the corresponding battery modules are connected in series or in parallel, then the driving cylinder drives the driving rod 433, the pressing rod 41 and the pressing block 42 to move upwards to release the welded electrode plate, and the first sliding driving device 14 and the second sliding driving device 15 continue to drive the support 12 and the second sliding seat 13 And moving the welding seat 2, the laser welding head 3 and the pressing device 4 to the next welding position for the next pressing positioning and welding operation.

Claims

1. A battery laser welding device is characterized by comprising a workbench (1) for placing a battery module and an electrode plate and a welding seat (2) arranged on the workbench (1), the welding seat (2) is provided with a laser welding head (3) which is used for welding the electrode plates on the wiring ends of the battery modules so as to enable the electrode plates to connect the battery modules in series or in parallel, a pressing device (4) which can move along the Z axis of the workbench (1) and is used for pressing the electrode plate on the battery module is arranged on one side of the laser welding head (3), the pressing device (4) comprises a pressing rod (41), a pressing block (42) which is arranged at the end part of the pressing rod (41) and used for pressing the electrode plate, and a pressing driving assembly (43) which is arranged on the welding seat (2) and used for driving the pressing rod (41) to move, and a welding channel (421) for the laser of the laser welding head (3) to pass through is arranged on the pressing block (42).

2. The battery laser welding device according to claim 1, characterized in that the pressing rod (41) comprises an upper rod (411) and a lower rod (412) which are integrally formed and connected end to end, the upper rod (411) is L-shaped, the end of the long side of the upper rod is connected with the pressing driving component (43), the lower rod (412) is V-shaped, the upper end of the lower rod is connected with the end of the short side of the upper rod (411), and the pressing block (42) is arranged at the lower end of the lower rod.

3. The battery laser welding device according to claim 1 or 2, characterized in that the welding base (2) is provided with a guide rail (21), and the pressing rod (41) is provided with a sliding block (410) which is slidably connected with the guide rail (21).

4. A battery laser welding device according to claim 3, characterized in that the pressing drive assembly (43) comprises a fixed seat (431) fixed on the welding seat (2), a drive cylinder (432) arranged on the fixed seat (431), and a transmission rod (433) arranged between the output end of the drive cylinder (432) and the end of the pressing rod (41).

5. The battery laser welding device according to claim 1, characterized in that the worktable (1) is provided with a first slide (11) parallel to the X-axis of the worktable (1), a support (12) slidably arranged on the first slide (11) and parallel to the Z-axis of the worktable (1), and a second slide (13) arranged on the support (12) and parallel to the Y-axis of the worktable (1), a first sliding driving device (14) for driving the support (12) to slide along the axial direction of the first sliding seat (11) is arranged on the first sliding seat (11), the welding seat (2) is slidably arranged on the second sliding seat (13), and a second sliding driving device (15) used for driving the welding seat (2) to slide along the axial direction of the second sliding seat (13) is arranged on the second sliding seat (13).

6. A battery laser welding device according to claim 5, characterized in that said support (12) is provided with third slide driving means (16) for driving said second carriage (13) to slide in the axial direction of said support (12).

7. The battery laser welding device according to claim 1, wherein two welding channels (421) are provided on the pressing block (42), and the two welding channels (421) are arranged in parallel.