CN219817617U

CN219817617U - Bending device for electrode lugs of battery cells

Info

Publication number: CN219817617U
Application number: CN202320469562.5U
Authority: CN
Inventors: 占根生; 高树占; 王志伟
Original assignee: Shenzhen Hero Laser Equipment Co ltd
Current assignee: Shenzhen Hero Laser Equipment Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-10-13
Anticipated expiration: 2033-03-02

Abstract

The utility model discloses a battery cell tab bending device which comprises a frame, a pressing mechanism, a clamping mechanism and a bending mechanism, wherein a placing platform for placing an aluminum shell is formed on the frame, and a bending area is formed on the part of the tab extending out of the placing platform; the pressing mechanism comprises a lifting driving piece and an abutting plate, the lifting driving piece is arranged on the frame, and the lifting driving piece is used for driving the abutting plate to press or loosen the aluminum shell; the clamping mechanism is used for clamping or loosening the cover plate; the bending mechanism comprises a transverse driving assembly and a bending assembly, the bending assembly comprises a bending driving structure and a pressing arm, the bending assembly is connected to the transverse driving assembly, the bending driving structure drives the pressing arm to move downwards and abut against the bending area, and the transverse driving assembly drives the bending assembly to move towards the direction close to the aluminum shell. According to the battery cell tab bending device, the tab is not pulled in the process of bending the tab, the tab is protected, and the product quality of the battery cell is improved.

Description

Bending device for electrode lugs of battery cells

Technical Field

The utility model relates to the technical field of battery cell processing, in particular to a battery cell tab bending device.

Background

The energy storage battery in the current market has high density and large capacity, and the tab of the energy storage battery needs to be bent in the manufacturing process of the energy storage battery. The tab bending mainly takes manual operation as main part: the staff uses the tab bending rod to manually bend the tab; the clamp body positions the battery cell and the tab, and limits the bending size of the tab, so that the yield of the tab is ensured. However, the mode of manually bending the tab by manually using the tab bending rod has the defects of low efficiency, high labor intensity, easiness in pulling the tab and poor product quality controllability, and can not meet the requirements of the development of the energy storage battery market on the product quality and the production efficiency.

Disclosure of Invention

The utility model mainly aims to provide a battery cell tab bending device, and aims to solve the technical problems of low efficiency, high labor intensity, easiness in pulling of tabs and poor product quality controllability in a manual tab bending mode by manually using tab bending rods in the prior art.

In order to achieve the above object, the battery cell tab bending device provided by the present utility model, the battery cell includes an aluminum shell, a cover plate and a tab, the tab is disposed in the aluminum shell and partially exposed in the aluminum shell, the cover plate is connected to the tab and extends longitudinally, the battery cell tab bending device includes:

the aluminum shell comprises a rack, wherein a placing platform used for placing the aluminum shell is formed on the rack, the lug parts exposed out of the aluminum shell extend out of the placing platform, bending areas are formed on the part, extending out of the placing platform, of the lug parts, and the cover plate is connected to the bending areas and is positioned on one side of the placing platform;

the pressing mechanism comprises a lifting driving piece and an abutting plate connected to an output shaft of the lifting driving piece, the lifting driving piece is installed on the frame, the abutting plate is located above the placing platform, and the lifting driving piece is used for driving the abutting plate to descend or ascend so as to press or loosen the aluminum shell arranged on the placing platform;

the clamping mechanism is arranged on the frame and corresponds to the cover plate, and is used for clamping or loosening the cover plate;

the bending mechanism is arranged at intervals of the clamping mechanism, the bending mechanism is arranged on one side of the placing platform and is arranged on the same side of the cover plate, the bending mechanism comprises a transverse driving assembly and a bending assembly connected with the transverse driving assembly, the transverse driving assembly is installed on the frame and comprises a bending driving structure and a pressing arm connected with the bending driving structure, the bending driving structure drives the pressing arm to move downwards and abut against the bending area, the transverse driving assembly drives the bending assembly to move towards the direction close to the aluminum shell, or the bending driving structure drives the pressing arm to move upwards and separate from the bending area, and the transverse driving assembly drives the bending assembly to move towards the direction far away from the aluminum shell.

Optionally, the horizontal drive assembly includes horizontal sharp module and connecting piece, horizontal sharp module install in the frame, the connecting piece connect in horizontal sharp module, bend the drive structure include horizontal cylinder, link, rocker and install in slide shaft in the link, horizontal cylinder install in the connecting piece, the link install in the output shaft of horizontal cylinder, the arm is connected the free end of rocker, the articulated end of rocker articulate in the frame, offer on the rocker from down to last towards the spout that is close to the direction slope setting of aluminum hull, the slide shaft be located in the spout and with the cell wall sliding contact cooperation of spout, horizontal cylinder is used for through the link is in order to drive the slide shaft is in the spout towards be close to or keep away from the direction slip of aluminum hull, so as to pass through the rocker drives the arm is down or upwards remove.

Optionally, the rocker includes interconnect's rotation section and section of bending, the one end that the section of bending was kept away from to the rotation section is for the articulated end, the section of bending is followed the one end of rotation section is towards being close to the direction of aluminum hull is buckled, the spout set up in the rotation section, the section of bending is kept away from the one end of rotation section is the free end.

Optionally, the frame is provided with the mount pad, be provided with the pivot in the mount pad, the both ends of pivot install respectively in the mount pad through two bearings, articulated end with the pivot is connected.

Optionally, the link includes first connecting plate, second connecting plate and the third connecting plate that connect gradually, first connecting plate connect in horizontal cylinder's output shaft, first connecting plate with the third connecting plate connect respectively in the both ends of second connecting plate, just the both ends of sliding axle install respectively in first connecting plate with the third connecting plate.

Optionally, the clamping mechanism includes a clamping assembly, the clamping assembly includes a first clamping cylinder and two clamping legs that vertical interval set up, two the clamping legs divide to locate the top and the bottom of apron, two the clamping legs all with the first clamping cylinder is connected, each clamping leg vertically extends, first clamping cylinder is used for driving two the clamping legs is along vertical opposite direction or opposite direction motion, in order to with the apron presss from both sides tightly or loosens.

Optionally, an avoidance port through which the pressing arm passes is formed at a position, located above, of the clamping leg corresponding to the pressing arm.

Optionally, the clamping mechanism includes the second clamping assembly, the second clamping assembly includes second clamping cylinder and two vertically spaced splint, two splint divide to locate the both ends of apron, two splint all with the second clamping cylinder is connected, the second clamping cylinder is used for driving two splint along vertically opposite or opposite movement, in order to with the apron presss from both sides tightly or unclamps.

Optionally, the hold-down mechanism still includes buffer structure, buffer structure includes keysets, spliced pole and elastic component, the keysets connect in the output shaft of lift driving piece, the spliced pole install in the keysets, threaded hole has been seted up to the bottom of spliced pole, the butt board corresponds the through-hole has been seted up to the spliced pole, be provided with the stopper in the through-hole, wear to be equipped with the screw in the through-hole, the screw with threaded hole threaded connection, just the head of screw with the bottom butt of stopper, the upper end of elastic component with the spliced pole is connected, the lower extreme of elastic component with the butt board is connected.

Optionally, be provided with the arch on the spliced pole, the elastic component is the spring, the spring housing is located the spliced pole periphery, just the upper end butt of spring in bellied bottom, the lower extreme butt of spring in the top of stopper.

When the battery cell tab bending device is used, the battery cell is placed on the placing platform, and the abutting plate is driven to descend through the lifting driving piece and the aluminum shell of the battery cell is pressed. The cover plate is then clamped by a clamping mechanism. Then the bending driving structure drives the pressing arm to move downwards to be abutted against the bending area of the lug and gradually bend the lug, and meanwhile, the transverse driving assembly drives the bending driving structure and the pressing arm to move towards the direction close to the aluminum shell, so that the bending work of the lug is completed and the lug cannot be pulled. The bending device for the electrode lug of the battery cell realizes the bending work of the electrode lug, replaces a mode of manually bending the electrode lug by using the electrode lug bending rod, improves the working efficiency and reduces the labor intensity of workers. In addition, in the process of bending the tab, the tab cannot be pulled, the tab is protected, the product quality of the battery cell is improved, and the quality controllability of the battery cell is high.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram illustrating an embodiment of a bending device for a battery cell tab and a battery cell according to the present utility model;

FIG. 2 is a schematic diagram illustrating a bending apparatus for a battery cell tab according to an embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a bending mechanism in a bending device for a battery cell tab according to an embodiment of the present utility model;

FIG. 4 is a schematic structural view of a clamping mechanism in a bending device for a battery cell tab according to an embodiment of the present utility model;

fig. 5 is a schematic partial cross-sectional view of a bending device for a battery cell tab according to an embodiment of the utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a bending device 100 for a tab 202 of a battery cell 200.

In an embodiment, as shown in fig. 1 to 4, the battery cell 200 includes an aluminum case 201, a cover plate 203 and a tab 202, the tab 202 is disposed on the aluminum case 201 and partially exposed to the aluminum case 201, the cover plate 203 is connected to the tab 202 and extends longitudinally, the tab 202 bending device 100 of the battery cell 200 includes a frame 10, a pressing mechanism 20, a clamping mechanism 30 and a bending mechanism 40, a placement platform 11 for placing the aluminum case 201 is formed on the frame 10, the tab 202 extends out of the placement platform 11, a bending area 2021 is formed on a portion of the tab 202 extending out of the placement platform 11, and the cover plate 203 is connected to the bending area 2021 and is located at one side of the placement platform 11; the pressing mechanism 20 comprises a lifting driving piece 21 and an abutting plate 22 connected to an output shaft of the lifting driving piece 21, the lifting driving piece 21 is mounted on the frame 10, the abutting plate 22 is located above the placing platform 11, and the lifting driving piece 21 is used for driving the abutting plate 22 to descend or ascend so as to press or loosen the aluminum shell 201 placed on the placing platform 11; the clamping mechanism 30 is mounted on the frame 10 and arranged corresponding to the cover plate 203, and the clamping mechanism 30 is used for clamping or loosening the cover plate 203; the bending mechanism 40 is disposed on one side of the placement platform 11 and is disposed on the same side as the cover plate 203, the bending mechanism 40 includes a transverse driving component 41 and a bending component 42 connected with the transverse driving component 41, the transverse driving component 41 is mounted on the frame 10, the bending component 42 includes a bending driving structure 421 and a pressing arm 423 connected to the bending driving structure 421, the bending component 42 is connected to the transverse driving component 41, when the bending driving structure 421 drives the pressing arm 423 to move downwards and abut against the bending region 2021, the transverse driving component 41 drives the bending component 42 to move towards a direction close to the aluminum shell 201, or when the bending driving structure 421 drives the pressing arm 423 to move upwards and separate from the bending region 2021, the transverse driving component 41 drives the bending component 42 to move towards a direction far away from the aluminum shell 201.

When the bending device 100 for the tab 202 of the battery cell 200 is used, and when the battery cell 200 needs to be bent, the battery cell 200 is placed on the placing platform 11, and the abutting plate 22 is driven to descend through the lifting driving piece 21 and the aluminum shell 201 of the battery cell 200 is pressed. The cover 203 is then clamped by the clamping mechanism 30. Then, the bending driving structure 421 drives the pressing arm 423 to move downwards to abut against the bending region 2021 of the tab 202, and gradually bends the tab 202, and at the same time, the transverse driving assembly 41 drives the bending driving structure 421 and the pressing arm 423 to move towards the direction close to the aluminum shell 201, so that the bending work of the tab 202 is completed and the tab 202 is not pulled. When the battery cell 200 needs to be taken out, the pressing arm 423 moves upwards to be separated from the bending region 2021 of the tab 202, and at the same time, the transverse driving assembly 41 drives the bending driving structure 421 and the pressing arm 423 to move in a direction away from the aluminum case 201, so that the bending mechanism 40 is separated from the battery cell 200. And then the clamping mechanism 30 and the pressing mechanism 20 are released to release the battery cell 200, so that the battery cell 200 can be taken out.

The bending device 100 for the electrode lug 202 of the battery cell 200 realizes the bending work of the electrode lug 202, replaces a mode of manually bending the electrode lug by using a tab bending rod, improves the working efficiency, and reduces the labor intensity of workers. In addition, in the process of bending the tab 202, the tab 202 is not pulled, the tab 202 is protected, the product quality of the battery cell 200 is improved, and the quality controllability of the battery cell 200 is high.

In an embodiment, as shown in fig. 2 and 3, the transverse driving assembly 41 includes a transverse linear module 411 and a connecting piece 412, the transverse linear module 411 is mounted on the frame 10, the connecting piece 412 is connected to the transverse linear module 411, the bending driving structure 421 includes a transverse cylinder 4211, a connecting frame 4212, a rocker 422 and a sliding shaft 4216 mounted in the connecting frame 4212, the transverse cylinder 4211 is mounted on the connecting piece 412, the connecting frame 4212 is mounted on an output shaft of the transverse cylinder 4211, a pressing arm 423 is connected to a free end of the rocker 422, a hinged end of the rocker 422 is hinged to the frame 10, a sliding groove 4221 is formed on the rocker 422, the sliding shaft 4216 is located in the sliding groove 4221 and is in sliding contact with a groove wall of the sliding groove 4221, and the transverse cylinder 4211 is used for driving the sliding shaft 4216 to slide in the sliding groove 4221 towards a direction approaching or separating from the aluminum case 201 through the connecting frame 4212, so as to drive the pressing arm 423 to move downwards or upwards through the rocker 422.

When the transverse cylinder 4211 drives the connecting frame 4212 to drive the sliding shaft 4216 to move towards the direction approaching to the aluminum shell 201, the sliding shaft 4216 slides along the sliding groove 4221, so that the rocker 422 drives the pressing arm 423 to move downwards. Conversely, when the transverse cylinder 4211 drives the connecting frame 4212 to drive the sliding shaft 4216 to move away from the aluminum housing 201, the sliding shaft 4216 slides reversely along the sliding groove 4221, so that the rocker 422 drives the pressing arm 423 to move upwards. The driving pressure arm 423 moves downwards and upwards through the transverse air cylinder 4211, the connecting frame 4212, the sliding shaft 4216, the rocker 422 and the sliding groove 4221, and the structural design is ingenious and reasonable.

Further, the rocker 422 includes a rotating section 4222 and a bending section 4223 connected to each other, one end of the rotating section 4222 away from the bending section 4223 is a hinged end, the bending section 4223 bends from one end of the rotating section 4222 towards a direction close to the aluminum shell 201, the chute 4221 is disposed on the rotating section 4222, and one end of the bending section 4223 away from the rotating section 4222 is a free end. The bending section 4223 bends from one end of the rotating section 4222 towards the direction close to the aluminum shell 201, so that the pressing arm 423 is in contact with the bending region 2021 of the tab 202, and the use reliability of the tab 202 bending device 100 of the battery cell 200 is improved.

Further, the frame 10 is provided with a mounting seat 12, a rotating shaft 13 is arranged in the mounting seat 12, two ends of the rotating shaft 13 are respectively mounted on the mounting seat 12 through two bearings, and the hinged end is connected with the rotating shaft 13. The rocker 422 is rotatably mounted on the frame 10 by arranging the mounting seat 12 and the rotating shaft 13, so that the structural design is more reasonable.

In an embodiment, the connecting frame 4212 includes a first connecting plate 4213, a second connecting plate 4214 and a third connecting plate 4215 sequentially connected, the first connecting plate 4213 is connected to the output shaft of the transverse cylinder 4211, the first connecting plate 4213 and the third connecting plate 4215 are respectively connected to two ends of the second connecting plate 4214, and two ends of the sliding shaft 4216 are respectively mounted to the first connecting plate 4213 and the third connecting plate 4215. Compared with the transverse cylinder 4211 which only drives one end of the sliding shaft 4216, the transverse cylinder 4211 drives the two ends of the sliding shaft 4216 through the first connecting plate 4213 and the third connecting plate 4215, which is beneficial to the sliding shaft 4216 to stably move along a preset path, so that the use reliability of the bending device 100 for the tab 202 of the battery cell 200 is improved. In addition, the second connecting plate 4214 is arranged to connect the first connecting plate 4213 and the third connecting plate 4215, so that the structural design is simple and reasonable.

In an embodiment, as shown in fig. 2 and 4, the clamping mechanism 30 includes a first clamping assembly 31, where the first clamping assembly 31 includes a first clamping cylinder 311 and two vertically spaced clamping legs 312, the two clamping legs 312 are respectively disposed at the top and bottom of the cover 203, the two clamping legs 312 are connected to the first clamping cylinder 311, each clamping leg 312 extends longitudinally, and the first clamping cylinder 311 is used to drive the two clamping legs 312 to move vertically toward or away from each other to clamp or unclamp the cover 203. The cover plate 203 is clamped by arranging the first clamping cylinder 311 and the two clamping legs 312, so that the structural design is more reasonable.

Further, the upper clamping leg 312 is provided with a avoiding opening 3121 corresponding to the pressing arm 423 for the pressing arm 423 to pass through, so that interference between the clamping leg 312 and the pressing arm 423 is avoided, and the use reliability of the bending device 100 for the tab 202 of the battery cell 200 is improved.

In one embodiment, the clamping mechanism 30 includes a second clamping assembly 32, where the second clamping assembly 32 includes a second clamping cylinder 321 and two clamping plates 322 disposed at a longitudinal interval, the two clamping plates 322 are respectively disposed at two ends of the cover 203, the two clamping plates 322 are connected to the second clamping cylinder 321, and the second clamping cylinder 321 is used to drive the two clamping plates 322 to move in opposite directions or opposite directions in the longitudinal direction so as to clamp or unclamp the cover 203. The cover plate 203 is clamped by the second clamping cylinder 321 and the two clamping plates 322, so that the structural design is more reasonable.

In an embodiment, as shown in fig. 2 and 5, the pressing mechanism 20 further includes a buffer structure 50, where the buffer structure 50 includes an adapter plate 51, a connection column 52 and an elastic member 53, the adapter plate 51 is connected to an output shaft of the lifting driving member 21, the connection column 52 is installed on the adapter plate 51, a threaded hole is provided at a bottom of the connection column 52, a through hole 221 is provided in the connection column 22 corresponding to the connection column 52, a limiting block 222 is provided in the through hole 221, a screw 223 is provided in the through hole 221, the screw 223 is in threaded connection with the threaded hole, a head of the screw 223 abuts against a bottom of the limiting block 222, an upper end of the elastic member 53 is connected with the connection column 52, and a lower end of the elastic member 53 is connected with the abutting plate 22. When the abutting plate 22 abuts against the aluminum shell 201, the buffer structure 50 plays a role in buffering the pressure of the abutting plate 22 on the aluminum shell 201, so that the situation that the aluminum shell 201 is damaged due to the fact that larger pressure is directly applied to the aluminum shell 201 is avoided, the buffer structure 50 plays a role in protecting the aluminum shell 201, and the use reliability of the cell 200 tab 202 bending device 100 is improved.

Further, the connection post 52 is provided with a protrusion 521, the elastic member 53 is a spring 53a, the spring 53a is sleeved on the outer periphery of the connection post 52, the upper end of the spring 53a abuts against the bottom of the protrusion 521, and the lower end of the spring 53a abuts against the top of the limiting block 222. The spring 53a has the advantages of easy material taking, uniform elasticity and the like.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides a battery cell tab bending device, the battery cell includes aluminum hull, apron and utmost point ear, utmost point ear set up in aluminum hull and part expose in aluminum hull, the apron connect in utmost point ear and longitudinal extension, its characterized in that, battery cell tab bending device includes:

2. The battery cell tab bending device of claim 1, wherein the transverse driving assembly comprises a transverse linear module and a connecting piece, the transverse linear module is installed in the frame, the connecting piece is connected with the transverse linear module, the bending driving structure comprises a transverse cylinder, a connecting frame, a rocker and a sliding shaft installed in the connecting frame, the transverse cylinder is installed in the connecting piece, the connecting frame is installed in an output shaft of the transverse cylinder, the pressing arm is connected with the free end of the rocker, the hinged end of the rocker is hinged on the frame, a sliding groove which is obliquely arranged from bottom to top and is close to the aluminum shell is formed in the rocker, the sliding shaft is located in the sliding groove and is in sliding contact with the groove wall of the sliding groove, and the transverse cylinder is used for driving the sliding shaft to slide in the sliding groove in a direction close to or far away from the aluminum shell through the connecting frame, so that the pressing arm is driven to move downwards or upwards through the rocker.

3. The device for bending a tab of a battery cell as defined in claim 2, wherein the rocker comprises a rotating section and a bending section which are connected with each other, wherein one end of the rotating section away from the bending section is the hinged end, the bending section bends from one end of the rotating section towards a direction close to the aluminum shell, the chute is arranged on the rotating section, and one end of the bending section away from the rotating section is the free end.

4. The battery cell tab bending device of claim 3 wherein a mounting seat is provided on the frame, a rotating shaft is provided in the mounting seat, two ends of the rotating shaft are respectively mounted on the mounting seat through two bearings, and the hinged end is connected with the rotating shaft.

5. The cell tab bending device of claim 2, wherein the connecting frame comprises a first connecting plate, a second connecting plate and a third connecting plate which are sequentially connected, the first connecting plate is connected to an output shaft of the transverse cylinder, the first connecting plate and the third connecting plate are respectively connected to two ends of the second connecting plate, and two ends of the sliding shaft are respectively installed on the first connecting plate and the third connecting plate.

6. The cell tab bending device of any one of claims 1-5 wherein the clamping mechanism comprises a first clamping assembly comprising a first clamping cylinder and two vertically spaced clamping legs, the two clamping legs being disposed at the top and bottom of the cover plate, the two clamping legs each being connected to the first clamping cylinder and each of the clamping legs extending longitudinally, the first clamping cylinder being adapted to drive the two clamping legs to move vertically toward and away from each other to clamp or unclamp the cover plate.

7. The bending device for the battery cell tab of claim 6 wherein the upper clamping leg is provided with a relief opening for the pressing arm to pass through at a position corresponding to the pressing arm.

8. The cell tab bending device of any one of claims 1 to 5 wherein the clamping mechanism comprises a second clamping assembly comprising a second clamping cylinder and two clamping plates arranged at intervals longitudinally, the two clamping plates being arranged at opposite ends of the cover plate, the two clamping plates being connected to the second clamping cylinder, the second clamping cylinder being adapted to drive the two clamping plates to move longitudinally toward and away from each other to clamp or unclamp the cover plate.

9. The cell tab bending device according to any one of claims 1 to 5, wherein the pressing mechanism further comprises a buffer structure, the buffer structure comprises an adapter plate, a connecting column and an elastic member, the adapter plate is connected to an output shaft of the lifting driving member, the connecting column is mounted on the adapter plate, a threaded hole is formed in the bottom of the connecting column, a through hole is formed in the abutting plate corresponding to the connecting column, a limiting block is arranged in the through hole, a screw is arranged in the through hole in a penetrating manner, the screw is in threaded connection with the threaded hole, a screw head of the screw is in abutting connection with the bottom of the limiting block, the upper end of the elastic member is connected with the connecting column, and the lower end of the elastic member is connected with the abutting plate.

10. The cell tab bending device of claim 9 wherein the connection post is provided with a protrusion, the elastic member is a spring, the spring is sleeved on the periphery of the connection post, the upper end of the spring is abutted to the bottom of the protrusion, and the lower end of the spring is abutted to the top of the limiting block.