CN220290854U

CN220290854U - Battery cell cover closing mechanism

Info

Publication number: CN220290854U
Application number: CN202321654337.5U
Authority: CN
Inventors: 刘军; 李养德; 殷火初; 李斌; 王世峰; 刘金成
Original assignee: Huizhou Jinyuan Precision Automation Equipment Co Ltd
Current assignee: Huizhou Jinyuan Precision Automation Equipment Co Ltd
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2024-01-02
Anticipated expiration: 2033-06-27

Abstract

The utility model relates to a battery cell cover closing mechanism which is used for pressing an end cover of a battery cell on a shell of the battery cell, wherein a first side surface of the end cover is connected with the shell through a lug, the battery cell cover closing mechanism comprises a conveyor belt, a bending device, an alignment device and a cover closing device, the conveyor belt is used for conveying a jig, and the jig is used for supporting the battery cell; the bending devices are arranged at one side of the conveyor belt at intervals and are used for bending the lugs so as to enable the first side face of the end cover to rotate to be parallel to the opening side face of the shell; the alignment device is arranged at one side of the lug bending device, which is far away from the bending device, along the conveying direction of the conveyor belt at intervals and is used for aligning the end cover with the shell; the cover closing devices are arranged on one side of the alignment device at intervals along the conveying direction of the conveying belt, and are used for pressing the end covers on the shell. The battery cell cover closing mechanism is simple in structure and high in cover closing efficiency.

Description

Battery cell cover closing mechanism

Technical Field

The utility model relates to the technical field of battery production equipment, in particular to a battery cell cover closing mechanism.

Background

In the production process of the battery cell, the winding core is required to be installed in the shell, then the lug extending out of the shell is bent, and then the end cover of one end, far away from the shell, of the lug is pressed on the shell for subsequent processing.

In the production link of the existing battery cell, the bending of the electrode lug, the notch of the end cover aligning to the shell, the lamination of the end cover and the shell and the like are all manually operated, and the following technical defects exist in the prior art: the manual operation process is tedious, a plurality of operators are required to be applied in a plurality of processes, the labor cost is high, repeated operation is easy to fatigue, and the production efficiency is low.

Disclosure of Invention

The aim of the embodiment of the utility model is that: the battery cell cover closing mechanism is simple in structure and high in cover closing efficiency.

To achieve the purpose, the embodiment of the utility model adopts the following technical scheme:

the utility model provides a battery cell closing mechanism, which is used for pressing the end cover of a battery cell on the shell of the battery cell, the first side surface of the end cover is connected with the shell through a pole lug, the battery cell closing mechanism comprises a conveyor belt, a bending device, an alignment device and a closing device, wherein the conveyor belt is used for conveying a jig, and the jig is used for supporting the battery cell; the bending devices are arranged at one side of the conveyor belt at intervals and are used for bending the electrode lugs so as to enable the first side face of the end cover to rotate to be parallel to the opening side face of the shell; the alignment device is arranged at one side of the lug bending device at intervals along the conveying direction of the conveyor belt and is used for aligning the end cover with the shell; the cover closing devices are arranged on one side, far away from the bending device, of the alignment device at intervals along the conveying direction of the conveyor belt, and the cover closing mechanism is used for pressing the end covers on the shell.

As a preferred scheme of the battery cell closing mechanism, the bending device comprises a first support, a first abutting component, a second abutting component and a tab folding component, wherein the first abutting component and the second abutting component are both arranged on the first support and are respectively positioned on the upper side and the lower side of the tab, the first abutting component and the second abutting component are respectively abutted to the upper side and the lower side of the tab, the contact position of the first abutting component, the second abutting component and the tab is the bending position, the tab folding component is arranged on the first support, and the tab folding component is used for pushing the end cover to rotate so that the tab is bent by 90 degrees around the bending position.

As a preferable scheme of the battery cell cover closing mechanism, the tab folding assembly comprises a first driving piece and a pressing rod, wherein the first driving piece is obliquely arranged on the first bracket, the first driving piece is inclined from top to bottom and faces to a direction close to the conveyor belt, and the first driving piece drives the pressing rod to move obliquely downwards so that the pressing rod pushes the end cover to rotate downwards around the bending position; or alternatively, the first and second heat exchangers may be,

the first driving piece inclines from bottom to top towards the direction close to the conveyor belt, and drives the pressing rod to move obliquely upwards, so that the pressing rod pushes the end cover to rotate upwards around the bending position.

As a preferred scheme of the battery cell cover closing mechanism, the tab folding assembly further comprises a first mounting block, the first mounting block is arranged at the driving end of the first driving piece, and the compression bar is rotationally connected with the first mounting block.

As a preferable scheme of the battery cell cover closing mechanism, the first abutting assembly comprises a second driving piece and a first pressing block, the second driving piece is arranged on the first bracket, the second driving piece is in transmission connection with the first pressing block so as to drive the first pressing block to abut against the tab, the first pressing block is provided with a first limiting surface for limiting the end cover to rotate, and the first limiting surface and the end surface of the first pressing block facing the tab form an included angle; and/or the number of the groups of groups,

the second support assembly comprises a third driving piece and a first support block, the third driving piece is arranged on the first support, the third driving piece is in transmission connection with the first support block so as to drive the first support block to support the pole lug tightly, the first support block is provided with a second limiting surface for limiting the end cover to rotate, and the second limiting surface and the end face of the first support block, facing the pole lug, are arranged in an included angle mode.

As a preferable scheme of the battery cell cover closing mechanism, the battery cell cover closing mechanism further comprises a positioning device, wherein the positioning device is used for clamping the shell, and the positioning device is arranged between the conveyor belt and the bending device; and/or the number of the groups of groups,

the positioning device is arranged between the conveyor belt and the alignment device; and/or the number of the groups of groups,

the positioning device is arranged between the conveyor belt and the cover closing device.

As a preferred scheme of electric core closing mechanism, positioner includes second support, first locating component and second locating component, first locating component with the second locating component is located respectively the upper and lower both sides of casing, first locating component includes fourth driving piece and second briquetting, the fourth driving piece sets up on the second support, the fourth driving piece with the second briquetting transmission is connected, in order to drive the second briquetting supports tightly the casing, the second locating component includes fifth driving piece and second support, the fifth driving piece sets up on the second support, the fifth driving piece with the second support transmission is connected, in order to drive the second support supports tightly the casing is kept away from one side of second briquetting.

As a preferable scheme of the battery cell cover closing mechanism, the aligning device comprises a sixth driving piece and a first clamping jaw, wherein the first clamping jaw is used for clamping the end cover, and the sixth driving piece is in transmission connection with the first clamping jaw so as to drive the first clamping jaw to move towards the central axis direction of the shell, so that the end cover is aligned with the shell.

As a preferred scheme of the battery cell cover closing mechanism, the cover closing device comprises a seventh driving piece and a second clamping jaw, wherein the second clamping jaw is used for clamping the end cover, and the seventh driving piece is in transmission connection with the second clamping jaw so as to drive the central axis of the second clamping jaw to align with the central axis facing the shell, so that the end cover is pressed on the shell.

As a preferable scheme of the battery cell cover closing mechanism, the cover closing device further comprises a pushing component, the pushing component is arranged on the second clamping jaw, and the pushing component is used for pushing the end cover to the shell.

The embodiment of the utility model has the beneficial effects that: through setting gradually bending device, alignment device and closing the lid device along the direction of transfer of conveyer belt, can automation mechanized operation realize bending of electric core utmost point ear, the alignment of end cover and casing and pressfitting the end cover on the casing, degree of automation is high, production efficiency is high, effectively reduces the input of cost of labor.

Drawings

The utility model is described in further detail below with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a battery cell according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a battery cell cover closing mechanism according to an embodiment of the utility model.

Fig. 3 is a schematic diagram illustrating the cooperation between a bending device and a positioning device according to an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a bending device according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram illustrating the cooperation between the alignment device and the capping device according to an embodiment of the present utility model.

In the figure:

1. a battery cell; 11. an end cap; 111. a second side; 12. a housing; 13. a tab; 2. a conveyor belt; 3. a jig; 4. a bending device; 41. a first bracket; 42. a first tightening assembly; 421. a second driving member; 422. a first briquette; 43. a second tightening assembly; 431. a third driving member; 432. a first support block; 44. a tab folding assembly; 441. a first driving member; 442. a compression bar; 443. a first mounting block; 5. an alignment device; 51. a sixth driving member; 52. a first jaw; 6. a cover closing device; 61. a seventh driving member; 62. a second jaw; 621. an eighth driving member; 622. a clamping plate; 7. a positioning device; 71. a second bracket; 72. a first positioning assembly; 721. a fourth driving member; 722. a second briquetting; 73. a second positioning assembly; 731. a fifth driving member; 732. and the second supporting block.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. 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 fall within the scope of the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

As shown in fig. 1 and fig. 2, the battery cell cover closing mechanism in the embodiment of the present utility model is used for pressing an end cover 11 of a battery cell 1 onto a housing 12 of the battery cell 1, a first side surface of the end cover 11 is connected with the housing 12 through a tab 13, a side surface of the end cover 11 connected with the tab 13 is a first side surface, in fig. 1, the first side surface is shielded, the first side surface is a side surface opposite to a second side surface 111, the first side surface is parallel to an axis direction of the housing 12, the battery cell cover closing mechanism includes a conveyor belt 2, a bending device 4, an alignment device 5 and a cover closing device 6, wherein the conveyor belt 2 is used for conveying a jig 3, and the jig 3 is used for supporting the battery cell 1; the bending devices 4 are arranged at one side of the conveyor belt 2 at intervals, and the bending devices 4 are used for bending the lugs 13 so as to enable the first side surface around which the end cover 11 winds to be parallel to the opening side surface of the shell 12; the alignment devices 5 are arranged at one side of the lug 13 bending device 4 at intervals along the conveying direction of the conveyor belt 2, and the alignment devices 5 are used for aligning the end covers 11 with the shell 12; the cover closing devices 6 are arranged at one side of the alignment device 5 away from the bending device 4 along the conveying direction of the conveyor belt 2 at intervals, and the battery cell cover closing mechanism is used for pressing the end cover 11 on the shell 12. Through setting gradually bending device 4, alignment device 5 and closing lid device 6 along the direction of delivery of conveyer belt 2, can automation mechanized operation realize bending of electric core 1 utmost point ear 13, the alignment of end cover 11 and casing 12 and with end cover 11 pressfitting on casing 12, degree of automation is high, production efficiency is high, effectively reduces the input of cost of labor, and compares in traditional manual operation, and this mechanism automated production processing is effectual, effectively improves the sealed effect of finished product end cover 11, and effectively ensures the uniformity of product. And the multi-station multifunctional parallel processing can be realized through the gradual transmission of the conveyor belt 2, so that the production efficiency of the mechanism is further improved.

It can be understood that in this embodiment, as shown in fig. 1 and 3, the battery cell 1 is a cylindrical battery cell 1, the conveyor belt 2 of the mechanism is an annular backflow conveying line, the jigs 3 are uniformly distributed on the backflow conveying line at intervals, the battery cell 1 is fed into the jigs 3 before the bending device 4, the jigs 3 are clamping jaws, at least the shell 12 extending out of one side of the tab 13 protrudes out of the clamping jaws, and when the battery cell 1 moves to the bending device 4 along with the conveyor belt 2, the state of the battery cell 1 is that the first side of the end cover 11 is horizontally upward. The bending device 4 comprises a first support 41, a first abutting component 42, a second abutting component 43 and a tab folding component 44, wherein the first abutting component 42 and the second abutting component 43 are arranged on the first support 41 and are respectively located on the upper side and the lower side of the tab 13, the first abutting component 42 and the second abutting component 43 are respectively abutted against the upper side and the lower side of the tab 13, the contact positions of the first abutting component 42, the second abutting component 43 and the tab 13 are bending positions, the tab folding component 44 is arranged on the first support 41, the tab folding component 44 is used for pushing the end cover 11 to enable the tab 13 to be bent by 90 degrees around the bending positions, namely, the tab 13 is bent into two parts which are arranged in an included angle, and the tab folding component 44 effectively ensures the bending effect of the tab 13. The first propping component 42 and the second propping component 43 compress the lug 13, play a role in supporting and fixing the lug 13, and are beneficial to the stable rotation of the folded lug component 44 driving the end cover 11 around the compressed point of the lug 13, so that the overturning stability of the end cover 11 is improved.

Specifically, as shown in fig. 4, the tab folding assembly 44 includes a first driving member 441 and a pressing rod 442, the first driving member 441 is obliquely disposed on the first bracket 41, the first driving member 441 is inclined from top to bottom and toward a direction approaching the conveyor belt 2, and the first driving member 441 drives the pressing rod 442 to move obliquely downward, so that the pressing rod 442 pushes the end cover 11 to rotate downward around the folding position. The first abutting component 42 comprises a second driving piece 421 and a first pressing block 422, the second driving piece 421 is arranged on the first bracket 41, the second driving piece 421 is in transmission connection with the first pressing block 422 to drive the first pressing block 422 to abut against the tab 13, the first pressing block 422 is provided with a first limiting surface for limiting the end cover 11 to rotate, and the first limiting surface and the end surface of the first pressing block 422 facing the tab 13 are arranged at an included angle; the second abutting component 43 comprises a third driving part 431 and a first supporting block 432, the third driving part 431 is arranged on the first bracket 41, the third driving part 431 is in transmission connection with the first supporting block 432 to drive the first supporting block 432 to abut against the lug 13, the first supporting block 432 is provided with a second limiting surface for limiting the end cover 11 to rotate, and the second limiting surface and the end face of the first supporting block 432, facing the lug 13, are arranged in an included angle.

Preferably, the first limiting surface is perpendicular to the end surface of the first pressing block 422 facing the tab 13, the second limiting surface is perpendicular to the end surface of the first supporting block 432 facing the tab 13, when the first driving member 441 drives the pressing rod 442 to push the end cover 11 to rotate downwards around the bending position, the rotation angle of the end cover 11 is limited until the end cover 11 is pushed to abut against the second limiting surface to limit, at this time, the first side surface of the end cover 11 is parallel to the opening side surface of the housing 12, and the overturning precision of the end cover 11 is improved. Of course, the first limiting surface may not be parallel to the opening side surface of the housing 12, and only the first pressing block 422 may abut against the upper side of the tab 13.

In other embodiments, when the battery cell 1 is fed, under the condition that the first side surface of the end cover 11 faces upward, the first driving member 441 is inclined from bottom to top toward the direction close to the conveyor belt 2, and the first driving member 441 drives the compression rod 442 to move obliquely upward, so that the compression rod 442 pushes the end cover 11 to rotate upward around the bending position, at this time, the first limiting surface is parallel to the opening side surface of the housing 12, the second limiting surface may not be parallel to the opening side surface of the housing 12, and only the first supporting block 432 needs to be ensured to be capable of abutting against the lower side of the tab 13 under the action of the third driving member 431.

Optionally, as shown in fig. 4, the tab folding assembly 44 further includes a first mounting block 443, where the first mounting block 443 is disposed at the driving end of the first driving member 441, and the compression bar 442 is rotationally connected with the first mounting block 443, so that friction force of the compression bar 442 to the end cover 11 when pushing the end cover 11 is reduced, thereby reducing loss of the end cover 11, and improving production quality of the battery cell 1.

Further, as shown in fig. 2, 3 and 5, in order to avoid the case 12 from being deviated or rotated when the tab 13 is bent, when the end cap 11 is aligned, and when the end cap 11 is pressed onto the case 12. The cell cover closing mechanism further comprises a positioning device 7, the positioning device 7 is used for clamping the shell 12, the positioning device 7 is arranged between the conveyor belt 2 and the bending device 4, the positioning device 7 is arranged between the conveyor belt 2 and the alignment device 5, and the positioning device 7 is arranged between the conveyor belt 2 and the cover closing device 6. The positioning device 7 is arranged to limit the position and the angle of the shell 12, so that the cover closing precision of the battery cell 1 is improved.

Specifically, as shown in fig. 3, the positioning device 7 includes a second bracket 71, a first positioning component 72 and a second positioning component 73, where the first positioning component 72 and the second positioning component 73 are located on the upper and lower sides of the housing 12, respectively, the first positioning component 72 includes a fourth driving member 721 and a second pressing block 722, the fourth driving member 721 is disposed on the second bracket 71, the fourth driving member 721 is in driving connection with the second pressing block 722 to drive the second pressing block 722 to tightly press against the housing 12, the second positioning component 73 includes a fifth driving member 731 and a second supporting block 732, the fifth driving member 731 is disposed on the second bracket 71, and the fifth driving member 731 is in driving connection with the second supporting block 732 to drive the second supporting block 732 to tightly press against one side of the housing 12 far from the second pressing block 722. The second pressing block 722 and the second supporting block 732 limit the two opposite sides of the shell 12, so that the shell 12 can keep a relatively stable position and angle, and the accuracy of the end cover 11 entering the shell is improved.

In other embodiments, as shown in fig. 5, the alignment device 5 includes a sixth driving member 51 and a first clamping jaw 52, where the first clamping jaw 52 is used to clamp the end cover 11, and the sixth driving member 51 is in transmission connection with the first clamping jaw 52 to drive the central axis of the first clamping jaw 52 to align with the central axis of the housing 12, so that the end cover 11 aligns with the housing 12, that is, the housing 12 is provided with a containing groove for containing a winding core, and the first clamping jaw 52 clamps the peripheral side wall of the end cover 11, and makes the end cover 11 face the notch of the containing groove under the driving of the sixth driving member 51. In this embodiment, the sixth driving member 51 is a triaxial module, that is, the first clamping jaw 52 is driven by the sixth driving member 51 to clamp the end cover 11 to move upwards, so that the central axis of the end cover 11 coincides with the central axis of the housing 12. Preferably, in the allowable range of the time node, the sixth driving member 51 can drive the first clamping jaw 52, i.e. the end cover 11, to move towards the housing 12, i.e. the sixth driving member 51 can drive the first clamping jaw 52 and the end cover 11 to move obliquely upwards, so that the end cover 11 approaches to and faces the notch of the accommodating groove, and the central axes of the end cover 11 and the housing 12 are aligned, i.e. the time of the end cover 11 moving towards the housing 12 is integrated, so that the covering efficiency of the battery cell 1 is effectively improved.

Optionally, as shown in fig. 5, the capping device 6 includes a seventh driving member 61 and a second clamping jaw 62, where the second clamping jaw 62 is used to clamp the end cap 11, and the seventh driving member 61 is in driving connection with the second clamping jaw 62 to drive the second clamping jaw 62 to move toward the housing 12, so that the end cap 11 is pressed onto the housing 12. In this embodiment, the end cover 11 includes a body and a connection portion protruding toward one side of the housing 12, the second clamping jaw 62 clamps the outer peripheral side of the body, and the second clamping jaw 62 is driven by the seventh driving element 61 to move, so that the connection portion is inserted into the housing 12, that is, the connection portion abuts against the slot wall of the accommodating slot, and the body abuts against the slot opening of the accommodating slot.

Further, the capping device 6 further includes a pushing component, which is disposed on the second clamping jaw 62, and is used for pushing the end cap 11 to the housing 12. Specifically, the second clamping jaw 62 includes an eighth driving element 621 and at least two clamping plates 622, the eighth driving element 621 can drive all the clamping plates 622 to be close to or far away from each other so as to clamp or loosen the end cover 11, all the clamping plates 622 enclose to form a clamping groove, the pushing assembly includes a ninth driving element and a pushing rod (the ninth driving element and the pushing rod are shielded by the clamping plates 622 and are not shown in the figure and are in a conventional linear driving structure), the ninth driving element is arranged on the eighth driving element 621 and is located in the clamping groove, and the ninth driving element is in transmission connection with the pushing rod so as to drive the pushing rod to extend out, so that the end cover 11 is pushed out of the clamping groove to be compressed onto the shell 12, the connection strength between the reinforced end cover 11 and the shell 12 is ensured, and the sealing effect of the end cover 11 and the shell 12 is effectively ensured.

It should be noted that, the first driving element 441, the second driving element 421, the third driving element 431, the fourth driving element 721, the fifth driving element 731, the eighth driving element 621 and the ninth driving element may all directly use linear cylinders, and of course, in order to further ensure the accuracy, a linear motor module may be used instead. In the present embodiment, the sixth driving member 51 is a three-axis module, and the seventh driving member 61 is a two-axis module, however, a robot may be used for driving.

In the description herein, it should be understood that the terms "upper," "lower," and the like are used for convenience in description and simplicity of operation only, and are not necessarily indicative or implying any particular orientation, configuration or operation of such apparatus or elements herein, and therefore should not be construed as limiting the present utility model.

In the description of the present specification, reference to the term "an embodiment" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in the foregoing embodiments, and that the embodiments described in the foregoing embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. The utility model provides a battery cell closes lid mechanism for with the end cover pressfitting of battery cell be in on the casing of battery cell, the first side of end cover pass through the utmost point ear with the casing is connected, its characterized in that, battery cell closes lid mechanism includes:

the conveying belt is used for conveying a jig, and the jig is used for supporting the battery cell;

the bending devices are arranged at one side of the conveyor belt at intervals and are used for bending the electrode lugs so as to enable the first side face of the end cover to rotate to be parallel to the opening side face of the shell;

the alignment devices are arranged at one side of the lug bending device at intervals along the conveying direction of the conveyor belt and are used for aligning the end cover with the shell;

and the cover closing devices are arranged at one side of the alignment device, which is far away from the bending device, along the conveying direction of the conveyor belt at intervals, and the cover closing mechanism is used for pressing the end cover on the shell.

2. The battery cell cover closing mechanism according to claim 1, wherein the bending device comprises a first bracket, a first abutting component, a second abutting component and a tab folding component, the first abutting component and the second abutting component are arranged on the first bracket and are respectively located on the upper side and the lower side of the tab, the first abutting component and the second abutting component are respectively abutted on the upper side and the lower side of the tab, the contact positions of the first abutting component, the second abutting component and the tab are the bending positions, the tab folding component is arranged on the first bracket, and the tab folding component is used for pushing the end cover to rotate so as to bend the tab by 90 degrees around the bending positions.

3. The battery cell cover closing mechanism according to claim 2, wherein the tab folding assembly comprises a first driving member and a pressing rod, the first driving member is obliquely arranged on the first bracket, the first driving member is obliquely arranged from top to bottom and faces to a direction approaching to the conveyor belt, and the first driving member drives the pressing rod to obliquely move downwards so that the pressing rod pushes the end cover to rotate downwards around the bending position; or alternatively, the first and second heat exchangers may be,

4. The battery cell cover closing mechanism according to claim 3, wherein the tab folding assembly further comprises a first mounting block, the first mounting block is disposed at the driving end of the first driving member, and the compression bar is rotatably connected with the first mounting block.

5. The battery cell cover closing mechanism according to claim 2, wherein the first abutting assembly comprises a second driving piece and a first pressing block, the second driving piece is arranged on the first bracket, the second driving piece is in transmission connection with the first pressing block so as to drive the first pressing block to abut against the tab, the first pressing block is provided with a first limiting surface for limiting the end cover to rotate, and the first limiting surface and the end surface of the first pressing block facing the tab form an included angle; and/or the number of the groups of groups,

6. The cell cover mechanism according to any one of claims 1 to 5, further comprising a positioning device for clamping the housing, the positioning device being provided between the conveyor belt and the bending device; and/or the number of the groups of groups,

7. The battery cell cover closing mechanism according to claim 6, wherein the positioning device comprises a second bracket, a first positioning assembly and a second positioning assembly, the first positioning assembly and the second positioning assembly are respectively positioned on the upper side and the lower side of the shell, the first positioning assembly comprises a fourth driving piece and a second pressing block, the fourth driving piece is arranged on the second bracket and is in transmission connection with the second pressing block so as to drive the second pressing block to tightly press against the shell, the second positioning assembly comprises a fifth driving piece and a second supporting block, the fifth driving piece is arranged on the second bracket, and the fifth driving piece is in transmission connection with the second supporting block so as to drive the second supporting block to abut against one side of the shell far away from the second pressing block.

8. The battery cell cover assembly mechanism of any one of claims 1 to 5, wherein the alignment device comprises a sixth drive member and a first jaw, the first jaw adapted to grip the end cap, the sixth drive member in driving engagement with the first jaw to drive a central axis of the first jaw into alignment with a central axis of the housing to align the end cap with the housing.

9. The battery cell cover closing mechanism according to any one of claims 1 to 5, wherein the cover closing device comprises a seventh driving member and a second clamping jaw, the second clamping jaw is used for clamping the end cover, and the seventh driving member is in transmission connection with the second clamping jaw so as to drive the second clamping jaw to move towards the direction of the shell, so that the end cover is pressed on the shell.

10. The battery cell lid closing mechanism of claim 9, wherein the lid closing device further comprises a pushing assembly disposed on the second jaw for pushing the end cap onto the housing.