CN219274797U

CN219274797U - Welding device for tab and cover plate

Info

Publication number: CN219274797U
Application number: CN202223503835.8U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-06-30
Anticipated expiration: 2032-12-26

Abstract

The utility model provides a tab and cover plate welding device which comprises a frame, a welding device, a pressure head assembly and an upward pushing assembly, wherein the welding device, the pressure head assembly and the upward pushing assembly are arranged on the frame, the pressure head assembly can horizontally move relative to the frame and is opposite to the upward pushing assembly, the pressure head assembly is provided with an upward pushing head which moves along the height direction of the frame, the upward pushing head is used for pushing a cover plate and a tab towards the upward pushing head and enabling the cover plate and the tab to be abutted against the upward pushing head, the welding device is positioned above the pressure head assembly, and the welding device is used for welding the cover plate and the tab which are clamped between the upward pushing head and the upward pushing head. According to the welding device for the tab and the cover plate, the pressing head assembly and the pushing-up assembly which are arranged oppositely are arranged on the frame, and the pushing-up assembly is used for pushing the cover plate and the tab to be clung to the pressing head assembly, so that welding of the tab and the cover plate is facilitated, and welding effect is also facilitated to be improved.

Description

Welding device for tab and cover plate

Technical Field

The utility model relates to the technical field of battery cell processing, in particular to a welding device for a tab and a cover plate.

Background

The existing production line battery core and cover plate laser welding mechanism is generally of a single working position, only one group of battery core and cover plate can be welded at a time, and the welding efficiency is low. Moreover, the welding mechanism of the existing production line is used for pressing down as a welding pressure head, the battery cell tab and the cover plate are compacted on the jig, and the jig is used as a height reference for welding. Because the battery cell jig on one device is set into a plurality of sets, the height references of the plurality of sets of jigs are required to be adjusted consistently, the precision cost of the jigs is increased, the maintenance and debugging difficulty of personnel is also increased, and the final welding effect is not very good. In addition, the welded protection pressure head needs to be automatically replaced after being used for a certain number of times, the existing mechanism is generally replaced at a working position when being replaced, the working position is located above the battery cell, and the risk of pollution to the battery cell is also caused by complex equipment structure, increased replacement difficulty and the like during replacement.

Disclosure of Invention

In view of the above, the present utility model is directed to a welding device for a tab and a cover plate, which is beneficial to welding the tab and the cover plate and improving the welding effect.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the welding device comprises a frame, a welding device arranged on the frame, a pressure head assembly and an upward pushing assembly;

the pressure head assembly can horizontally move relative to the frame and is arranged opposite to the push-up assembly, and the pressure head assembly is provided with an upper pressure head which moves along the height direction of the frame;

the upper pushing component is provided with an upper pushing head moving along the height direction of the rack, and the upper pushing head is used for pushing the cover plate and the tab towards the upper pushing head direction and enabling the cover plate and the tab to be abutted against the upper pushing head;

the welding device is located above the pressure head assembly and is used for welding the cover plate clamped between the upper pressure head and the upper pushing head with the electrode lugs.

Further, the pressure head assembly comprises a pressure head mounting frame which is arranged on the frame in a sliding mode, and the upper pressure head is arranged on the pressure head mounting frame in a sliding mode.

Further, a first driving device for driving the pressure head mounting frame to move is arranged on the frame.

Further, a guide sliding structure is arranged between the frame and the pressure head mounting frame;

the first driving device comprises a motor arranged on the frame and a screw rod connected with the power output end of the motor, and the pressure head mounting frame is in threaded connection with the screw rod.

Further, the pressure head mounting frame is provided with a second driving device for driving the upper pressure head to move, and/or the pressure head mounting frame is provided with a material storage table for placing the upper pressure head.

Further, a third driving device for driving the welding device to move along the height direction of the frame is arranged on the frame.

Further, the push-up assembly comprises a fourth driving device, and the push-up head is arranged at the power output end of the fourth driving device.

Further, the tab and cover plate welding device further comprises a defocusing amount detection assembly arranged on one side of the push-up assembly, and the defocusing amount detection assembly is used for measuring the height of the position of the bottom surface of the cover plate.

Further, the defocus amount detection assembly comprises a laser range finder.

Further, the welding device, the pressure head assembly, the pushing-up assembly and the defocus amount detection assembly are arranged in a plurality of groups at intervals.

Compared with the prior art, the utility model has the following advantages:

according to the welding device for the tab and the cover plate, the pressing head assembly and the pushing-up assembly which are arranged oppositely are arranged on the frame, and the pushing-up assembly is used for pushing the cover plate and the tab to be clung to the pressing head assembly, so that welding of the tab and the cover plate is facilitated, and welding effect is improved.

In addition, the pressure head assembly comprises a pressure head mounting frame which is arranged on the frame in a sliding manner, so that the upper pressure head can be moved out of the working position, and the upper pressure head can be replaced conveniently. The first driving device for driving the pressure head mounting frame to move is arranged on the frame, so that the sliding automation of the pressure head mounting frame is realized, and manpower and material resources are saved. And be equipped with direction sliding structure between frame and pressure head installing support, and direction sliding structure includes motor and lead screw, its simple structure is convenient for set up.

In addition, through being equipped with the storing platform of last pressure head placement on the pressure head mounting bracket, conveniently in time change the pressure head, save time. The electrode lug and the cover plate welding device are also provided with a defocusing amount detection assembly so as to measure the height of the position of the bottom surface of the cover plate, thereby improving the accuracy of the device and giving prompt to staff in time. And welding set, pressure head subassembly and push up the subassembly and go up the focus volume detection assembly and be the multiunit of interval arrangement, be favorable to improving the machining efficiency of whole device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is an assembly diagram of a tab and cover plate welding device and a battery core fixture according to an embodiment of the utility model;

fig. 2 is a schematic structural diagram of a tab and cover plate welding device according to an embodiment of the utility model;

fig. 3 is a schematic structural view of another view angle of the tab and cover welding device according to the embodiment of the utility model;

fig. 4 is a schematic structural diagram of a tab and cover welding device according to another embodiment of the utility model.

Reference numerals illustrate:

1. a frame; 101. a frame; 102. a bottom plate;

2. a ram assembly; 201. the pressure head mounting frame; 202. an upper pressure head; 203. a through groove; 204. a dust removal channel; 205. a motor; 206. a screw rod; 207. a guide rail; 208. a slide block; 209. a storage table; 210. a first cylinder; 211. a support frame;

3. a push-up assembly; 301. a second cylinder; 302. pushing up the pressure head;

4. a welding device; 401. a third cylinder; 402. a galvanometer laser welding machine;

5. a defocus amount detection assembly;

6. a battery cell fixture.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are presented, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The embodiment relates to a tab and cover plate welding device 4, which is used for welding a cover plate assembled at a battery tab. As shown in fig. 1 to 4, the tab and cover plate welding device 4 includes a frame 1, and a welding device 4, a ram assembly 2 and a push-up assembly 3 disposed on the frame 1.

Wherein the ram assembly 2 is horizontally movable relative to the frame 1 to be disposed opposite to the push-up assembly 3, and the ram assembly 2 has an upper ram 202 that moves in the height direction of the frame 1. The push-up assembly 3 is provided with a push-up pressing head 302 moving along the height direction of the frame 1, and the push-up pressing head 302 is used for pushing the cover plate and the tab towards the direction of the upper pressing head 202 and enabling the cover plate and the tab to abut against the upper pressing head 202. In addition, the welding device 4 is located above the ram assembly 2, and the welding device 4 is used for welding the cover plate and the tab, which are sandwiched between the upper ram 202 and the upper pushing head 302.

The lug and cover plate welding device 4 of the embodiment is provided with the pressing head assembly 2 and the push-up assembly 3 which are arranged oppositely on the frame 1, the push-up assembly 3 is used for pushing the cover plate and the lug to be clung to the pressing head assembly 2, welding of the lug and the cover plate is facilitated, and welding effect is improved.

Based on the above design concept, an exemplary structure of the tab and cover plate welding device 4 of the present embodiment is shown in fig. 2 to 4, and the chassis 1 includes a vertically disposed frame 101 and a horizontally disposed base plate 102 structure. The welding device 4 is disposed on the top of the frame 101, and the welding end of the welding device 4 is disposed downward. The ram assembly 2 is slidably disposed on the base plate 102. The push-up assembly 3 is arranged at the front end of the bottom plate 102, and the push-up assembly 3 can push the tab and the cover plate against the pressure head assembly 2, so that the welding device 4 can conveniently perform a welding process.

As a preferred embodiment, the ram assembly 2 includes a ram mounting frame 201 slidably disposed on the frame 1, and the upper ram 202 is slidably disposed on the ram mounting frame 201. And preferably, the frame 1 is provided with a first driving device for driving the ram mounting frame 201 to move. Referring to fig. 3, the first driving device includes a motor 205 provided on the frame 1, and a screw 206 connected to a power output end of the motor 205, and the ram mount 201 is screwed to the screw 206. When the motor 205 drives the screw shaft 206 to rotate, the ram mount 201 can slide in the front-rear direction with respect to the base plate 102 with the rotation of the screw shaft 206.

In order to improve the smoothness of movement of the ram mounting frame 201, in this embodiment, a guiding sliding structure is provided between the frame 1 and the ram mounting frame 201. Specifically, referring to fig. 3, a guide rail 207 is respectively provided on the left and right sides of the base plate 102, a slider 208 is respectively provided on the bottom side of the ram mounting frame 201 corresponding to the two guide rails 207, and the slider 208 on the ram mounting frame 201 slides along the extending direction of the guide rail 207, so that the ram mounting frame 201 can slide on the base plate 102.

When the pressure head mounting frame 201 slides along the front end of the bottom plate 102, the pressure head assembly 2 can move to the upper side of the push-up assembly 3 and is matched with the push-up assembly 3, so that the electrode lugs and the cover plate can be welded conveniently. The upper ram 202 in the ram assembly 2 is easily replaced as the ram mount 201 slides along the rear end of the base plate 102.

In addition, as a preferred embodiment, as shown in fig. 1 to 4, a magazine 209 on which the upper ram 202 is placed is provided on the ram mounting frame 201 for placing the upper ram 202 to be replaced or placing the upper ram 202 to be replaced, saving replacement time, thereby improving efficiency.

In addition, in this embodiment, the ram mounting frame 201 is provided with a second driving device for driving the upper ram 202 to move. Referring specifically to fig. 2 and 4, a driving structure such as a first cylinder 210 is provided on the ram mounting frame 201 to drive the upper ram 202 to slide up and down along the height direction along the ram mounting frame 201.

Referring to fig. 4, a supporting frame 211 for supporting the upper pressure head 202 is provided on the pressure head mounting frame 201, and a through slot 203 penetrating up and down is provided at the middle of the supporting frame 211 and the upper pressure head 202, and a welding head of the welding device 4 passes through the through slot 203 to contact and weld a tab and a cover plate between the upper pressure head 202 and the push-up assembly 3. In order to ensure the welding precision, as a preferred embodiment, a dust removing channel 204 communicated with the through groove 203 is further provided, so that the welding effect is effectively ensured.

In addition, the push-up assembly 3 includes a fourth driving device, as shown in fig. 4, the fourth driving device includes a second cylinder 301, the second cylinder 301 is disposed at a front end of the base plate 102, and the push-up head 302 is disposed at a power output end of the second cylinder 301 and is capable of pushing up the tab and the cover plate by the power output end of the second cylinder 301.

And as a preferred embodiment, the tab and cover plate welding device 4 further comprises a defocus amount detection assembly 5 arranged on one side of the push-up assembly 3, and the defocus amount detection assembly 5 is used for measuring the height of the position where the bottom surface of the cover plate is located.

Referring to fig. 1 to 4, the defocus amount detecting unit 5 is provided at one side of the aforementioned second cylinder 301 for detecting whether the height of the bottom surface of the cover plate is within a reasonable range. And preferably, the defocus amount detection assembly 5 comprises a laser rangefinder. If the height of the bottom surface of the cover plate is within a reasonable range, continuing the subsequent welding process; if the height of the bottom surface of the cover plate is no longer in a reasonable range, the abnormal situation of the staff is fed back, and the convenience is brought to timely treatment.

After the pressing head assembly 2 and the pushing-up assembly 3 push the pole piece and the cover plate in place, the welding assembly starts the welding process. And as a preferred embodiment, a third driving device for driving the welding device 4 to move along the height direction of the frame 1 is arranged on the frame 1. Referring to fig. 2 and 3, a third driving means is provided on the frame 101, and is preferably provided as a third cylinder 401, and the welding device 4 is provided at a power output end of the third cylinder 401 to be driven to move downward to perform a welding process.

Among them, the welding device 4 preferably employs a galvanometer laser welder 402. The welding method has the characteristics of high welding speed, small welding spot, less heat quantity, small thermal deformation and the like. And through the quick movement of the vibrating mirror, the light guide system of the product can effectively and stably perform laser spot welding, so that the welding device has a good welding effect. It is to be understood that the welding device 4 in this embodiment may also employ other welding devices 4, which are not particularly limited herein.

In this embodiment, in order to improve the welding efficiency of the whole device, as a preferred embodiment, the welding device 4, the pressure head assembly 2, the push-up assembly 3 and the defocus amount detection assembly 5 are arranged at intervals, so that the device can complete welding of a plurality of pole pieces and cover plates at the same time, thereby improving the processing efficiency of the battery cell. Each component in the embodiment is simultaneously provided with two groups, and welding between the two groups of pole pieces and the cover plate can be simultaneously carried out. It will be appreciated that in this embodiment, further sets of components may be provided to perform further sets of welding processes simultaneously.

In the tab and cover plate welding device 4 of this embodiment, in the use process, the upper pressure head 202 is assembled on the supporting frame 211 of the pressure head mounting frame 201, and the pressure head mounting frame 201 is driven to move to the designated position at the front end of the bottom plate 102 by the motor 205, so that the tab and the cover plate in the battery cell jig 6 are partially stacked between the pressure head assembly 2 and the push-up assembly 3. The first cylinder 210 drives the upper ram 202 to move down to a specified position, while the second cylinder 301 drives the upper push head 302 to push the pole piece and the cover plate upward, so that the upper push head 302 and the upper ram 202 can abut against the pole piece and the cover plate. And then the third cylinder 401 drives the galvanometer laser welder 402 to pass through the supporting frame 211 and the through groove 203 on the upper pressure head 202, so as to finish the welding process of the pole piece and the cover plate.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A tab and cover plate welding device is characterized in that:

the welding device is arranged on the frame, and comprises a welding device, a pressure head assembly and an upward pushing assembly;

2. The tab and cover plate welding device according to claim 1, wherein:

the pressure head assembly comprises a pressure head mounting frame which is arranged on the frame in a sliding mode, and the upper pressure head is arranged on the pressure head mounting frame in a sliding mode.

3. The tab and cover plate welding device according to claim 2, wherein:

the frame is provided with a first driving device for driving the pressure head mounting frame to move.

4. The tab and cover plate welding device according to claim 3, wherein:

a guide sliding structure is arranged between the frame and the pressure head mounting frame;

5. The tab and cover plate welding device according to claim 2, wherein:

and the pressure head mounting frame is provided with a second driving device for driving the upper pressure head to move, and/or the pressure head mounting frame is provided with a material storage table for placing the upper pressure head.

6. The tab and cover plate welding device according to claim 1, wherein:

and a third driving device for driving the welding device to move along the height direction of the frame is arranged on the frame.

7. The tab and cover plate welding device according to claim 1, wherein:

the push-up assembly comprises a fourth driving device, and the push-up head is arranged at the power output end of the fourth driving device.

8. The tab and cover plate welding device according to any one of claims 1 to 7, wherein:

the tab and cover plate welding device further comprises a defocusing amount detection assembly arranged on one side of the push-up assembly, and the defocusing amount detection assembly is used for measuring the height of the position of the bottom surface of the cover plate.

9. The tab and cover plate welding device of claim 8, wherein:

the defocus amount detection assembly comprises a laser range finder.

10. The tab and cover plate welding device of claim 8, wherein:

the welding device, the pressure head assembly, the push-up assembly and the defocusing amount detection assembly are arranged in a plurality of groups at intervals.