Battery cell tab protection plate pre-bending mechanism

Abstract

The utility model relates to the technical field of battery cell production, and discloses a battery cell tab protection plate pre-bending mechanism which comprises a mounting frame, an upper jacking module, a guide piece, a lower pressing module and a pre-bending module, the upper jacking module, the guide piece and the lower pressing module are sequentially arranged on the mounting frame from bottom to top, and the pre-bending module is located on one side of the mounting frame; the guiding piece is used for enabling adhesive tape at the head of the battery cell to avoid the operation path of the downward pressing module, the upward jacking module and the downward pressing module are used for fixing a tab protection plate located at the head of the battery cell, and the pre-bending module is used for bending the tab protection plate extending out of the head of the battery cell. The pre-bending device has the following technical effects that the guide piece is arranged, so that the phenomenon that adhesive tape at the head of a battery cell interferes with the pressing operation is effectively avoided, the pre-bending operation is orderly carried out, and the operation quality and efficiency are improved; the tab protection plate is fixed through the upper jacking module and the lower pressing module, so that the position unification of pre-bending creases is realized, the consistency of products is ensured, and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery cell production, and in particular relates to a pre-bending mechanism for a battery cell tab protection plate. Background Art

[0002] During the production process of battery cells, a protective plate is usually welded on the tab of the battery cell to prevent the tab from being damaged during the production process and affecting the normal use of the battery cell. After completing the welding process of the protective plate and the tab of the battery cell, the tab and protective plate welded together need to be bent. Since the bending range of the tab protective plate is large, the method of directly bending the tab protective plate is prone to problems such as incomplete bending or uneven bending parts. Therefore, the tab protective plate needs to be pre-bent before the bending operation to ensure the bending effect.

[0003] In the prior art, the pre-bending is achieved by hooking or pushing the tab protection plate, but the tab protection plate is not firmly fixed during the pre-bending process, resulting in the position of the pre-bending crease being not fixed, and the consistency of the product cannot be guaranteed. In addition, in the production process of some battery cells, adhesive tape is also attached to the head of the battery cell, which is easy to interfere with the pre-bending operation during the pre-bending process and affect the pre-bending operation. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides a pre-bending mechanism for a battery cell tab protection plate. By setting a guide member, the interference of the battery cell head tape with the downward pressing operation can be effectively avoided, thereby ensuring that the pre-bending operation is carried out in an orderly manner. The tab protection plate is fixed by an upper top module and a lower pressing module to achieve the uniformity of the pre-bending crease position, thereby ensuring the consistency of the product and improving the product quality.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] The utility model provides a pre-bending mechanism for a battery cell tab protection plate, comprising a mounting frame, an upper module, a guide, a lower pressing module and a pre-bending module, wherein the upper module, the guide and the lower pressing module are sequentially arranged on the mounting frame from bottom to top, and the pre-bending module is located on one side of the mounting frame;

[0007] The guide member is used to make the adhesive tape on the battery cell head avoid the operation path of the downward pressing module, the upper module and the downward pressing module are used to fix the tab protection plate located at the battery cell head, and the pre-bending module is used to bend the tab protection plate extending out of the battery cell head.

[0008] As a further description of the technical solution of the utility model, the upper top module includes a first driving unit and an upper top block connected to the driving end of the first driving unit.

[0009] As a further description of the technical solution of the utility model, the driving end of the first driving unit is also connected to a clamping unit, and the clamping unit is used to clamp the soft board of the protection board located on the side of the battery cell. The clamping unit can fix the soft board of the protection board located on the side of the battery cell, which can not only avoid the soft board of the protection board from interfering with the pre-bending operation during the pre-bending operation, but also help to unify the position of the soft board of the protection board, further improving the consistency of the product.

[0010] As a further description of the technical solution of the utility model, the clamping unit includes a clamping drive assembly and a clamping block connected to the driving end of the clamping drive assembly, and the fixed end of the clamping drive assembly is connected to the driving end of the first driving unit.

[0011] As a further description of the technical solution of the utility model, the pressing module includes a second driving unit and a pressing block connected to the driving end of the second driving unit.

[0012] As a further description of the technical solution of the utility model, the lower pressing block includes a fixing portion and a limiting portion, the fixing portion is used to fix the lug protection plate located at the head of the battery cell, the limiting portion is used to limit the bending action of the pre-bending module, and the angle between the fixing portion and the limiting portion is less than 90 degrees. Since the limiting portion can limit the bending action of the pre-bending module, and the angle between the fixing portion and the limiting portion is less than 90 degrees, when the pre-bending module pushes the lug protection plate against the limiting portion, the pre-bending angle of the lug protection plate can reach more than 90 degrees, which is beneficial to improving the efficiency of subsequent bending operations. At the same time, it also ensures the consistency of the pre-bending angle, which is beneficial to improving product quality.

[0013] As a further description of the technical solution of the utility model, the lower pressing block is connected to the driving end of the second driving unit through a first buffer unit, the first buffer unit includes a first slide rail and a first slider, the first slide rail is arranged on the driving end of the second driving unit along the downward pressing direction of the lower pressing block, and the first slider is slidably connected to the first slide rail;

[0014] A first buffer spring is connected between the first slider and the driving end of the second driving unit along the pressing direction of the pressing block. The first buffer unit is provided to provide a buffer space for the pressing action of the pressing block to avoid damage to the battery cell or the tab protection plate caused by excessive pressing, thereby ensuring the quality of the battery cell.

[0015] As a further description of the technical solution of the utility model, the pre-bending module includes a third driving unit and a pre-bending block connected to the driving end of the third driving unit.

[0016] As a further description of the technical solution of the utility model, a roller is provided at the end of the pre-bending block, and the roller is used to push the tab protection plate extending from the head of the battery cell against the lower pressing block. Providing a roller to push and bend the tab protection plate can not only improve the smoothness of the pre-bending action, but also improve the flatness of the bent portion of the tab protection plate, thereby ensuring the normal performance of the tab and improving the quality of the product.

[0017] As a further description of the technical solution of the utility model, the pre-bending block is connected to the driving end of the third driving unit through a second buffer unit, the second buffer unit includes a second slide rail and a second slider, the second slide rail is arranged on the third driving unit along the abutment direction of the tab protection plate extending out of the battery cell head, and the second slider is slidably connected to the second slide rail;

[0018] A second buffer spring is connected between the second slider and the driving end of the third driving unit along the contact direction of the tab protection plate extending out of the battery cell head. The second buffer unit is provided to provide a buffer space for the bending action of the pre-bending block, so as to prevent the pre-bending block from excessively squeezing the tab protection plate during the pre-bending process and damaging the tab protection plate.

[0019] In summary, the utility model has at least the following benefits:

[0020] 1. The pre-bending mechanism of the battery cell tab protection plate provided by the utility model isolates the battery cell head tape from the pressing module by setting a guide member, so that the battery cell head tape can avoid the operation path of the pressing module, thereby avoiding the interference of the battery cell head tape with the pressing operation of the pressing module, ensuring the orderly progress of the pre-bending operation, and improving the quality and efficiency of the pre-bending operation.

[0021] 2. The pre-bending mechanism for the cell tab protection plate provided by the utility model can ensure the uniformity of the pre-bending crease position by setting an upper push module and a lower pressure module to fix the tab protection plate, thereby ensuring the consistency of the product and being conducive to improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an overall structural diagram of the pre-bending mechanism of the battery cell tab protection plate of Example 1 of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the battery head adhesive tape and the tab protection plate of Example 1 of the utility model;

[0024] Figure 3 It is a side view of the pre-bending mechanism of the battery cell tab protection plate of Example 1 of the utility model;

[0025] Figure 4 for Figure 3A magnified view of part A;

[0026] Figure 5 This is a schematic structural diagram of the top module of Example 2 of the utility model;

[0027] Figure 6 It is a side view of the pressing module and the pre-bending module of Example 3 of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the lower pressing block of Example 3 of the utility model;

[0029] Figure 8 This is a structural schematic diagram of the first buffer unit of Embodiment 3 of the present utility model;

[0030] Fig. 9 This is a schematic structural diagram of the roller and the second buffer unit of Example 3 of the utility model.

[0031] Markings in the figure:

[0032] 1. Mounting frame;

[0033] 2. Top module; 21. First drive unit; 22. Top block; 23. Pressing unit; 231. Pressing drive assembly; 232. Pressing block;

[0034] 3. Guide parts;

[0035] 4. Pressing module; 41. Second driving unit; 42. Pressing block; 421. Fixing part; 422. Positioning part; 43. First buffer unit; 431. First slide rail; 432. First slide block; 433. First buffer spring;

[0036] 5. Pre-bending module; 51. third driving unit; 52. pre-bending block; 521. roller; 53. second buffer unit; 531. second slide rail; 532. second slide block; 533. second buffer spring;

[0037] 101, cell head adhesive tape; 102, tab protection plate; 102a, connecting portion; 102b, bending portion. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0040] Example 1

[0041] refer to Figures 1 to 4 The utility model provides a pre-bending mechanism for a cell tab protection plate, comprising a mounting frame 1, an upper module 2, a guide member 3, a lower pressing module 4 and a pre-bending module 5. The upper module 2, the guide member 3 and the lower pressing module 4 are sequentially arranged on the mounting frame 1 from bottom to top, and the pre-bending module 5 is located on one side of the mounting frame 1. The guide member 3 is used to make the cell head adhesive tape avoid the operation path of the lower pressing module 4, the upper module 2 and the lower pressing module 4 are used to fix the tab protection plate located at the cell head, and the pre-bending module 5 is used to bend the tab protection plate extending out of the cell head.

[0042] It should be noted that, in this example, the pole ear and the protection plate are welded together and are called the pole ear protection plate 102. The end of the pole ear protection plate 102 located at the head of the battery cell is the connecting portion 102a, and the end of the pole ear protection plate extending out of the head of the battery cell is the bending portion 102b. The head of the battery cell is affixed with a battery head tape 101.

[0043] In some embodiments, the guide member 3 is fixedly installed on the mounting frame 1, the main body of the guide member 3 is in the shape of an elongated strip, and an arc structure is formed at both ends. The shortest distance between the main body of the guide member 3 and the pressing module 4 is greater than the shortest distance between the battery cell head tape 101 and the pressing module 4. The guide member 3 plays a role similar to a retaining wall, which can block the battery cell head tape 101 outside the operating path of the pressing module 4, thereby isolating the pressing module 4 from the battery cell head tape 101, and effectively preventing the battery cell head tape 101 from interfering with the pressing operation of the pressing module 4, thereby ensuring that the pre-bending operation is carried out normally and orderly, thereby improving the quality and efficiency of the pre-bending operation. The specific implementation process is that the battery cells are transported in parallel by the conveying trolley and gradually approach the pre-bending station. When approaching the pre-bending station, the battery cell head tape 101 first contacts the arc structure at one end of the guide member 3 and moves along the arc structure. Under the guidance of the arc structure, it moves into the main body of the guide member 3 and adheres to the surface of the main body of the guide member 3. After completing the pre-bending operation, it continues to move along the main body of the guide member 3 and passes through the arc structure at the other end of the guide member 3, and finally leaves the guide member 3.

[0044] As an implementation mode, during the pre-bending operation, the conveying trolley conveys the transferred battery cells to the pre-bending station, the battery cells located at the pre-bending station are placed horizontally, the battery cell heads are located in the pre-bending operation area, the upper top module 2 presses upward against the bottom surface of the connecting portion 102a, the lower pressure module 4 presses downward against the top surface of the connecting portion 102a, and the pre-bending module 5 pushes the bending portion 102b from the bottom to the upper side against the lower pressure module 4 to complete the pre-bending action. It can be understood that the lower pressure module 4 not only plays the role of fixing the connecting portion 102a, but also plays a limiting role in the pre-bending action of the pre-bending module 5, so that the pre-bending angle can be controlled, which is conducive to maintaining the consistency of the pre-bending angle, thereby improving the consistency of the product. At the same time, the stable fixation of the connecting portion 102a by the upper top module 2 and the lower pressure module 4 can ensure the uniformity of the pre-bending crease position, further improve the consistency of the product, and improve the product quality.

[0045] Example 2

[0046] As a further optimization of Example 1, refer to Figure 5 The upper push module 2 includes a first driving unit 21 and an upper push block 22 connected to the driving end of the first driving unit 21. In some embodiments, the first driving unit 21 is an up and down driving cylinder, which can drive the upper push block 22 to rise and abut the connecting portion 102a.

[0047] In some embodiments, the driving end of the first driving unit 21 is also connected to a clamping unit 23, and the clamping unit 23 is used to clamp the soft board of the protection board located on the side of the battery cell. Specifically, the clamping unit 23 includes a clamping drive component 231 and a clamping block 232 connected to the driving end of the clamping drive component 231, and the fixed end of the clamping drive component 231 is connected to the driving end of the first driving unit 21. In some embodiments, the clamping drive component 231 is a clamping drive cylinder, which can drive the clamping block 232 to move closer to or away from the soft board of the protection board. Driven by the first driving unit 21, the clamping block 232 can move upward to the pre-bending station together with the upper block 22, and driven by the clamping drive component 231, the clamping block 232 can clamp and fix the soft board of the protection board located on the side of the battery cell.

[0048] Since the soft board of the protection board located on the side of the battery cell will open or warp in a natural state, it is easy to interfere with the pre-bending operation. By setting a clamping unit 23 to clamp and fix the soft board of the protection board, it can not only effectively avoid the soft board of the protection board from interfering with the pre-bending operation during the pre-bending operation, but also ensure the uniform position of the soft board of the protection board, thereby further improving the consistency of the product.

[0049] Example 3

[0050] As a further optimization of Example 1, refer to Figures 6 to 9The pressing module 4 includes a second driving unit 41 and a pressing block 42 connected to the driving end of the second driving unit 41. In some embodiments, the second driving unit 41 is an up-and-down driving cylinder, which can drive the pressing block 42 to move downward to press the connecting portion 102a.

[0051] Furthermore, the lower pressing block 42 includes a fixing portion 421 and a limiting portion 422, wherein the fixing portion 421 is used to fix the tab protection plate located at the head of the battery cell, and the limiting portion 422 is used to limit the bending action of the pre-bending module 5, and the angle between the fixing portion 421 and the limiting portion 422 is less than 90 degrees. It can be understood that the top surface of the connecting portion 102a is pressed against the fixing portion 421, and the bending portion 102b is pressed against the limiting portion 422 under the pushing and wiping of the pre-bending module 5, therefore, the angle between the fixing portion 421 and the limiting portion 422 is equal to the angle between the connecting portion 102a and the bending portion 102b after pre-bending.

[0052] Since the angle between the fixing portion 421 and the limiting portion 422 is less than 90 degrees, the angle between the pre-bending connecting portion 102a and the bending portion 102b is also less than 90 degrees. It can also be understood that when the pre-bending module 5 pushes the bending portion 102b against the limiting portion 422, the pre-bending amplitude of the tab protection plate can reach more than 90 degrees, which is conducive to improving the efficiency of subsequent bending operations. At the same time, the fixed angle between the fixing portion 421 and the limiting portion 422 can ensure the consistency of the pre-bending angle, which is conducive to improving the consistency of the product.

[0053] As a further optimization, the lower pressure block 42 is connected to the driving end of the second driving unit 41 through the first buffer unit 43. The first buffer unit 43 includes a first slide rail 431 and a first slider 432. The first slide rail 431 is arranged on the driving end of the second driving unit 41 along the downward pressing direction of the lower pressure block 42. The first slider 432 is slidingly connected to the first slide rail 431. A first buffer spring 433 is connected between the first slider 432 and the driving end of the second driving unit 41 along the downward pressing direction of the lower pressure block 42.

[0054] It can be understood that the cooperation between the first slide rail 431 and the first slider 432 provides a buffer space for the downward pressing action of the pressing block 42, and the pulling effect of the first buffer spring 433 limits the buffer space to a certain extent, so that the pressing block 42 can only bounce up and down within the deformation range of the first buffer spring 433. The provision of the first buffer unit 43 can effectively prevent the pressing block 42 from being over-pressed and causing damage to the battery cell or the tab protection plate, thereby ensuring the production quality of the battery cell.

[0055] In some embodiments, a pressure sensor may be provided on the lower pressing block 42. By sensing and controlling the pressure of the pressing action through the pressure sensor, it is possible to further prevent excessive pressure of the lower pressing block 42 from causing damage to the battery cell or the tab protection plate, thereby further ensuring the quality of the battery cell.

[0056] As a further optimization, the pre-bending module 5 includes a third driving unit 51 and a pre-bending block 52 connected to the driving end of the third driving unit 51. In some embodiments, the third driving unit 51 includes a horizontal moving module and a vertical moving module, the horizontal moving module can drive the pre-bending block 52 to approach or move away from the pre-bending station, and the vertical moving module can drive the pre-bending block 52 to move from bottom to top to push and wipe the bending portion 102b.

[0057] In some embodiments, a roller 521 is provided at the end of the pre-bending block 52, and the roller 521 is used to push and wipe the tab protection plate extending from the head of the battery cell against the lower pressing block 42. Under the rolling of the roller 521, the bending portion 102b is pushed and wiped from bottom to top, which can make the pushing and wiping process smoother, thereby improving the pre-bending operation efficiency. At the same time, the roller 521 rolls on the surface of the bending portion 102b, which can improve the flatness of the bending portion 102b and further improve the quality of the product.

[0058] In some embodiments, since the angle between the fixing portion 421 and the limiting portion 422 is less than 90 degrees, in order to adapt to the angle between the fixing portion 421 and the limiting portion 422, the pre-bending block 52 can be set to an inclined state so that the pre-bending block 52 and the limiting portion 422 have a higher fit, thereby ensuring the pre-bending effect.

[0059] In some embodiments, the pre-bending block 52 is connected to the driving end of the third driving unit 51 through the second buffer unit 53, the second buffer unit 53 includes a second slide rail 531 and a second slider 532, the second slide rail 531 is arranged on the third driving unit 51 along the contact direction of the tab protection plate extending out of the battery cell head, the second slider 532 is slidably connected to the second slide rail 531, and a second buffer spring 533 is connected between the second slider 532 and the driving end of the third driving unit 51 along the contact direction of the tab protection plate extending out of the battery cell head. It can be understood that the second buffer unit 53 has the same working principle as the first buffer unit 43, and the setting of the second buffer unit 53 can effectively prevent the pre-bending block 52 from excessively squeezing the tab protection plate during the pre-bending process and damaging the tab protection plate.

[0060] The pre-bending mechanism of the battery cell tab protection plate of the utility model avoids the interference of the battery cell head tape with the downward pressing operation by arranging a guide member, thereby ensuring that the pre-bending operation is carried out in an orderly manner; the fixing action of the tab protection plate by the upper push module and the lower pressing module is realized to unify the position of the pre-bending crease, thereby ensuring the consistency of the product and improving the product quality; the fixing of the soft plate of the protection plate is realized by arranging a clamping unit, thereby avoiding the interference of the soft plate of the protection plate with the pre-bending operation, while ensuring the uniformity of the position of the soft plate of the protection plate and improving the consistency of the product; by setting the included angle between the fixing part and the limiting part to be less than 90 degrees, the bending angle of the tab protection plate can be controlled, so that the pre-bending amplitude is greater than 90 degrees, which is beneficial to improving the efficiency of the subsequent bending operation; by arranging a roller at the end of the pre-bending block, the smoothness of the pre-bending action and the flatness of the bending part of the tab protection plate can be improved.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0063] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A pre-bending mechanism for a battery cell tab protection plate, characterized in that: It comprises a mounting frame (1), an upper module (2), a guide member (3), a lower pressing module (4) and a pre-bending module (5), wherein the upper module (2), the guide member (3) and the lower pressing module (4) are arranged on the mounting frame (1) in sequence from bottom to top, and the pre-bending module (5) is located on one side of the mounting frame (1); The guide member (3) is used to make the adhesive tape on the battery cell head avoid the operation path of the pressing module (4); the upper module (2) and the pressing module (4) are used to fix the tab protection plate located at the battery cell head; and the pre-bending module (5) is used to bend the tab protection plate extending out of the battery cell head.

2. The pre-bending mechanism for the battery tab protection plate according to claim 1, characterized in that: The upper top module (2) comprises a first driving unit (21) and an upper top block (22) connected to the driving end of the first driving unit (21).

3. The pre-bending mechanism for the battery tab protection plate according to claim 2, characterized in that: The driving end of the first driving unit (21) is also connected to a clamping unit (23), and the clamping unit (23) is used to clamp the soft board of the protection board located at the side of the battery cell.

4. The pre-bending mechanism for the battery cell tab protection plate according to claim 3, characterized in that: The clamping unit (23) comprises a clamping drive assembly (231) and a clamping block (232) connected to the driving end of the clamping drive assembly (231), and the fixed end of the clamping drive assembly (231) is connected to the driving end of the first driving unit (21).

5. The pre-bending mechanism for the battery tab protection plate according to claim 1, characterized in that: The pressing module (4) comprises a second driving unit (41) and a pressing block (42) connected to the driving end of the second driving unit (41).

6. The pre-bending mechanism for the battery tab protection plate according to claim 5, characterized in that: The lower pressing block (42) comprises a fixing portion (421) and a limiting portion (422), wherein the fixing portion (421) is used to fix the tab protection plate located at the head of the battery cell, and the limiting portion (422) is used to limit the bending action of the pre-bending module (5), and the angle between the fixing portion (421) and the limiting portion (422) is less than 90 degrees.

7. The pre-bending mechanism for the battery cell tab protection plate according to claim 5, characterized in that: The lower pressing block (42) is connected to the driving end of the second driving unit (41) through a first buffer unit (43); the first buffer unit (43) comprises a first slide rail (431) and a first slider (432); the first slide rail (431) is arranged on the driving end of the second driving unit (41) along the downward pressing direction of the lower pressing block (42); and the first slider (432) is slidably connected to the first slide rail (431); A first buffer spring (433) is connected between the first sliding block (432) and the driving end of the second driving unit (41) along the downward pressing direction of the downward pressing block (42).

8. The pre-bending mechanism for the battery tab protection plate according to claim 5, characterized in that: The pre-bending module (5) comprises a third driving unit (51) and a pre-bending block (52) connected to the driving end of the third driving unit (51).

9. The pre-bending mechanism for the battery cell tab protection plate according to claim 8, characterized in that: A roller (521) is provided at the end of the pre-bending block (52), and the roller (521) is used to push the tab protection plate extending out of the battery cell head to abut against the lower pressing block (42).

10. The battery cell tab protection plate pre-bending mechanism according to claim 9, characterized in that: The pre-bending block (52) is connected to the driving end of the third driving unit (51) via a second buffer unit (53); the second buffer unit (53) comprises a second slide rail (531) and a second slider (532); the second slide rail (531) is arranged on the third driving unit (51) along the abutment direction of the tab protection plate extending out of the battery cell head; the second slider (532) is slidably connected to the second slide rail (531); A second buffer spring (533) is connected between the second sliding block (532) and the driving end of the third driving unit (51) along the abutment direction of the tab protection plate extending out of the battery cell head.

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