A battery cell tab bending fixture

Abstract

This application discloses a battery cell tab bending fixture, comprising: a battery cell fixing mechanism and a bending operation component. The battery cell fixing mechanism is used to fix the battery cell and has a crossbeam. The bending operation component includes a sliding assembly and a bending member. The sliding assembly is slidably connected to the crossbeam, and the bending member is slidably connected to the sliding assembly. The sliding direction of the bending member is perpendicular to the sliding direction of the sliding assembly, and the bending member is used to bend the battery cell tab. This application innovatively designs a battery cell tab bending fixture. When performing the battery cell tab bending operation, the battery cell fixing mechanism is first fixed to the battery cell, then the sliding assembly is slid along the crossbeam to directly above the tab, and the bending member is pressed to achieve tab bending. This makes the tab bending operation time-saving and labor-saving. Ordinary operators can use the battery cell tab bending fixture of this application to perform tab bending operations, and the bent tabs have a consistent bending degree, making the subsequent laser welding operation of the battery cell tab convenient and quick.

Description

Technical Field

[0001] This invention relates to the field of battery assembly technology, and in particular to a tooling for bending battery cell tabs. Background Technology

[0002] Currently, environmental and energy issues are driving the rapid development of electromechanical equipment. Square and cylindrical battery cells have made significant strides in their application and development. However, the development of pouch cells is limited by the greater difficulties in their assembly, resulting in a lag in their development compared to square and cylindrical cells.

[0003] A pouch cell consists of a cell body and tabs. The tabs are metal sheets, and each cell body has two tabs: one connected to the positive terminal and the other to the negative terminal. During the assembly process, the tabs need to be crimped, meaning they need to be bent and flattened for subsequent laser welding. In existing technologies, tab crimping is usually done manually. This is difficult, requires experienced operators, and is labor-intensive and time-consuming. Furthermore, manual crimping makes it difficult to apply consistent pressure each time, resulting in variations in the height or bending degree of the tabs after crimping, severely impacting subsequent laser welding. Currently, no dedicated tool has been designed for crimping the tabs of pouch cells.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] This invention provides a tooling for bending battery cell tabs.

[0006] The present invention adopts the following technical solution:

[0007] A battery cell tab bending fixture, comprising:

[0008] A cell fixing mechanism is used to fix the cell to a battery cell, and the cell fixing mechanism has a crossbeam;

[0009] A bending operating component, comprising a sliding assembly and a bending member, wherein the sliding assembly is slidably connected to the crossbeam, and the bending member is slidably connected to the sliding assembly, the sliding direction of the bending member being perpendicular to the sliding direction of the sliding assembly, and the bending member being used to bend the tabs of the battery cell.

[0010] Optionally, the crossbeam includes at least two long shafts;

[0011] The sliding assembly has at least two first through holes;

[0012] Each of the aforementioned long shafts is respectively inserted into the corresponding first through hole.

[0013] Optionally, all of the major axes are located in the same plane.

[0014] Optionally, the battery cell tab bending fixture includes a locking member, which is disposed on the sliding assembly for locking the sliding assembly to the long shaft.

[0015] Optionally, the sliding assembly is provided with a threaded hole;

[0016] The threaded hole is connected to the first through hole;

[0017] The locking element is threaded into the first through hole to abut against the long shaft and lock the position of the sliding assembly.

[0018] Optionally, the battery cell tab bending fixture includes multiple bending operation components, each of which can be slidably disposed on the crossbeam.

[0019] Optionally, the cell fixing mechanism includes:

[0020] Two brackets, both of which are slidably fitted onto the crossbeam, forming a clamping space between the two brackets;

[0021] An elastic element is provided, with its two ends connected to the two brackets respectively, so that the two brackets are clamped and fixed on the battery cell.

[0022] Optionally, the crossbeam includes at least two long shafts;

[0023] The bracket is provided with at least two second through holes;

[0024] Each of the aforementioned long shafts is respectively inserted into the corresponding second through hole.

[0025] Optionally, the bracket is provided with an extension;

[0026] The two ends of the elastic element are respectively connected to the corresponding extension.

[0027] Optionally, the bracket has a protruding top.

[0028] With the two brackets clamping the battery cell in place;

[0029] The top abuts against the battery cell.

[0030] By adopting the above technical solution, the present invention has the following beneficial effects:

[0031] This application innovatively designs a battery cell tab bending fixture. When performing the battery cell tab bending operation, the battery cell fixing mechanism is first fixed to the battery cell, and then the sliding assembly is slid along the crossbeam to the top of the tab. Pressing the bending part can achieve the tab bending, making the tab bending operation time-saving and labor-saving. Ordinary operators can use the battery cell tab bending fixture of this application to perform the tab bending operation, and the bending degree of the bent tabs is consistent, making the subsequent laser welding operation of the battery cell tab convenient and quick.

[0032] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0033] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0034] Figure 1 A schematic diagram of the structure of the battery cell tab bending fixture clamped on the battery cell according to an embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the structure of the battery cell tab bending fixture provided in the embodiments of this application;

[0036] Figure 3 A schematic diagram of the bracket for the battery cell tab bending fixture provided in an embodiment of this application;

[0037] Figure 4 A schematic diagram of the bending operation component and the force measuring spring of the battery cell tab bending fixture provided in the embodiments of this application;

[0038] Figure 5 A schematic diagram of the structure of the second sliding member of the battery cell tab bending fixture provided in the embodiments of this application;

[0039] Figure 6 A schematic diagram of the structure of the first sliding member of the battery cell tab bending fixture provided in an embodiment of this application;

[0040] Figure 7 A schematic diagram of the locking component of the battery cell tab bending fixture provided in this application embodiment.

[0041] In the figure, the components include: a cell fixing mechanism 1, a crossbeam 11, a bracket 12, a first main body 121, an extension 1211, a second through hole 1212, a second main body 122, a top abutment 1221, an elastic element 13, a bending operating element 2, a sliding assembly 21, a first sliding element 211, a main body 2111, a first through hole 2111a, a threaded hole 2111b, a slide rail 2112, a slide groove 2113, and a second sliding element. 212, sliding fit part 2121, pre-compression part 2122, pre-compression inclined surface 2122a, side surface 2122b, arc surface 2122c, through groove 2122d, guide groove 2122e, step 2122f, bending part 22, hollow part 221, press rubber 222, locking part 3, threaded rod 31, limiting part 32, rotating part 33, battery cell 4, electrode lug 41, force measuring spring 5, fixing seat 6.

[0042] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0044] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] See Figures 1 to 7As shown in the figure, this application provides a battery cell tab bending fixture, including: a battery cell 4 fixing mechanism 1 and a bending operation component 2. The battery cell 4 fixing mechanism 1 is used to fix the battery cell 4, and the battery cell 4 fixing mechanism 1 has a crossbeam 11. The bending operation component 2 includes a sliding assembly 21 and a bending member 22. The sliding assembly 21 is slidably connected to the crossbeam 11, and the bending member 22 is slidably connected to the sliding assembly 21. The sliding direction of the bending member 22 is perpendicular to the sliding direction of the sliding assembly 21, and the bending member 22 is used to bend the tab 41 of the battery cell 4. This application innovatively designs a battery cell tab bending fixture. When bending the tab 41 of the battery cell 4, the battery cell 4 fixing mechanism 1 is first fixed on the battery cell 4, and then the sliding assembly 21 is slid along the crossbeam 11 to the top of the tab 41. Pressing the bending part 22 can bend the tab 41, making the bending operation of the tab 41 time-saving and labor-saving. Ordinary operators can use the battery cell tab bending fixture of this application to bend the tab 41, and the bending degree of the bent tab 41 is consistent, making the subsequent laser welding operation of the tab 41 of the battery cell 4 convenient and quick.

[0047] like Figure 1 and Figure 6 As shown, the crossbeam 11 includes at least two long shafts, and the sliding assembly 21 has at least two first through holes 2111a, with each long shaft passing through a corresponding first through hole 2111a. Providing at least two long shafts ensures that the position of the sliding assembly 21 sliding on each of the long shafts remains constant. If only one long shaft is provided, passing through the first through hole 2111a, the sliding assembly 21 may rotate about the long shaft as an axis, causing the position of the sliding assembly 21 to shift.

[0048] Each of the aforementioned long axes is located in the same plane. Correspondingly, each of the first through holes 2111a is also in the same plane as each of the aforementioned long axes. This allows for a smaller size of the battery cell 4 fixing mechanism 1 and the sliding assembly 21, resulting in a smaller battery cell tab bending fixture and easier operation.

[0049] In one possible implementation, such as Figure 1 As shown, the battery cell tab bending fixture includes a locking member 3, which is disposed on the sliding assembly 21 to lock the sliding assembly 21 to the long axis. When the sliding assembly 21 is slid to directly above the tab 41 of the battery cell 4, the locking member 3 is used to lock the sliding assembly 21 to the long axis, so that the sliding assembly 21 will not slide along the long axis, which facilitates positioning. When the bending operation member 2 is pressed to bend the tab 41 of the battery cell 4, the sliding assembly 21 will not move, so that the bending operation of the battery cell 4 is stable and it is easy to bend the tabs 41 of each battery cell 4 in a consistent manner.

[0050] like Figure 4 As shown, the sliding assembly 21 is provided with a threaded hole 2111b, which connects to a first through hole 2111a. The locking member 3 is threadedly connected to the first through hole 2111a to abut against the long shaft and lock the position of the sliding assembly 21. The locking member 3 can be a butterfly bolt. The butterfly bolt has a threaded rod 31, a limiting part 32, and a rotating part 33. The threaded rod 31 and the rotating part 33 are connected to both sides of the limiting part 32. When the locking member 3 locks the sliding assembly 21, the threaded rod 31 is threadedly connected to the threaded hole 2111b, and one end of the threaded rod 31 that extends into the first through hole 2111a abuts against the long shaft. The limiting part 32 limits the sliding assembly 21, and the rotating part 33 is used to rotate the locking member 3, so that the threaded rod 31 extends into or exits the first through hole 2111a. No tool is needed for fixing; the operation can be performed by manually rotating the rotating part 33, making the locking of the sliding assembly 21 convenient and quick.

[0051] In one possible implementation, such as Figure 4 and Figure 5 As shown, the sliding assembly 21 has a pre-pressure inclined surface 2122a. When the sliding assembly 21 slides past the battery cell 4, the pre-pressure inclined surface 2122a bends the electrode 41 on one side of the electrode 41 along the thickness direction. The sliding assembly 21 includes a main body and a pre-pressure portion 2122 located at one end of the main body. The main body is slidably connected to the crossbeam 11. In a direction perpendicular to the sliding surface of the main body, the pre-pressure portion 2122 protrudes from the main body, and the pre-pressure portion 2122 has the pre-pressure inclined surface 2122a. The tab 41 of the battery cell 4 is a metal sheet. When not bent, its structural strength is strong and it is not easy to bend. The pre-pressing inclined surface 2122a is used to pre-press the tab 41 to make it bend at a small angle, which weakens its overall structural strength to a certain extent. Then, the bending member 22 is used to press and bend the tab 41. This makes it easy to press and bend the tab 41 and makes the pressing operation effortless.

[0052] like Figure 4 and Figure 5 As shown, the pre-compression section 2122 is provided with side surfaces 2122b on both sides of the pre-compression inclined surface 2122a. The side surfaces 2122b and the pre-compression inclined surface 2122a are smoothly transitioned by an arc surface 2122c. When the sliding assembly 21 slides along the crossbeam 11 past the battery cell 4, the arc surface 2122c guides the electrode 41 to smoothly transition along the arc surface 2122c onto the pre-compression inclined surface 2122a, making the pre-compression of the electrode 41 very smooth.

[0053] like Figure 5 As shown, a through groove 2122d is provided on the pre-compression part 2122. The bending member 22 is slidably connected to the through groove 2122d. The bending member 22 can slide along the through groove 2122d to one side of the main body to bend the electrode tab 41. When the bending member 22 is pressed, it can slide along the through groove 2122d. The bending member 22 located on one side of the through groove 2122d can push the electrode tab 41 of the battery cell 4 to bend along the pre-compression inclined surface 2122a.

[0054] like Figure 5 As shown, the pre-compression inclined surface 2122a has an opening at one end near the main body that connects to the through groove 2122d. The through groove 2122d is a narrow slot, and the bending member 22 is a sheet. This makes the structure of the bending operation member 2 simpler and smaller in size.

[0055] like Figure 4 As shown, one end of the bending member 22 is provided with a pressing rubber 222. The pressing rubber 222 is used to directly contact the electrode tab 41 during the bending process of the bending member 22 bending the electrode tab 41. The pressing rubber 222 is made of flexible material. The pressing rubber 222 is used to protect the electrode tab 41 from damage during the bending process of the bending member 22 bending the electrode tab 41, and also to ensure that the electrode tab 41 is bent flat. The shape of the pressing rubber 222 can be set according to actual needs.

[0056] like Figure 5 As shown, the pre-compression part 2122 is provided with a guide groove 2122e, which connects to the through groove 2122d. The pressing rubber 222 can slide along the guide groove 2122e. The cross-sectional area of ​​the guide groove 2122e is larger than the opening of the through groove 2122d. A step 2122f is formed between the guide groove 2122e and the through groove 2122d. Without external force, the pressing rubber 222 is located in the guide groove 2122e and is confined to the step 2122f so that it cannot slide out of the through groove 2122d. The pressing rubber 222 covers the opening of the through groove 2122d.

[0057] In one possible implementation, such as Figure 4 and Figure 5As shown, the main body includes a first sliding member 211 and a second sliding member 212. The first sliding member 211 is slidably connected to the crossbeam 11, and the second sliding member 212 is slidably connected to the first sliding member 211. The sliding direction of the second sliding member 212 is perpendicular to the sliding direction of the first sliding member 211. The bending member 22 is slidably connected to the second sliding member 212, and the sliding direction of the bending member 22 is parallel to the second sliding member 212. The bending member 22 is used to bend the tab 41 of the battery cell 4. When the tab 41 of the battery cell 4 is long, the second sliding member 212 can be slid a certain distance along the first sliding member 211 toward the bending member 22. Then, the bending operation member 2 can be slid along the crossbeam 11 to directly above the tab 41, so that the tab 41 smoothly transitions from the side portion to the pre-pressing inclined surface 2122a through the arc surface 2122c, pre-pressing the tab 41 of the battery cell 4. This solves the problem that the tab 41 of the battery cell 4 is too long and it is inconvenient to move it to the pre-pressing inclined surface 2122a for pre-pressing. Pressing the bending member 22 can bend the tab 41 of the battery cell 4, and at the same time, reset the positions of the first sliding member 211 and the second sliding member 212.

[0058] like Figure 5 As shown, the second sliding member 212 includes a sliding engagement portion 2121, the pre-compression portion 2122 is located at one end of the sliding engagement portion 2121, and the pre-compression portion 2122 extends along the thickness direction of the sliding engagement portion 2121. The sliding engagement portion 2121 is slidably connected to the first sliding member 211, and the bending member 22 is slidably connected to the pre-compression portion 2122.

[0059] like Figure 6 As shown, a slide rail 2112 is provided on the first sliding member 211. The extension direction of the slide rail 2112 is parallel to the sliding direction of the bending member 22. The sliding mating part 2121 is slidably connected to the slide rail 2112. The sliding mating part 2121 can be two plates parallel to the sliding direction of the bending member 22, and the thick end face of the plate is slidably connected to the slide rail 2112.

[0060] like Figure 4 and Figure 6As shown, the first sliding member 211 includes a main body 2111. The slide rail 2112 includes two rails, which are spaced apart and parallel to each other on the main body 2111. A groove 2113 is formed between the rails and the main body 2111. A connecting strip is provided between the rails and the main body 2111. One end of the connecting strip is perpendicularly connected to one side of the main body 2111 along its thickness direction, and the other end of the connecting strip is connected to the rails. The rails, the main body 2111, and the connecting strip together form the groove 2113. The groove 2113 has an opening, and the openings of the two grooves 2113 face opposite directions. The first through hole 2111a and the threaded hole 2111b are located on the main body 2111. The sliding mating part 2121 includes two spaced-apart sliding plates, which are slidably connected to corresponding grooves 2113. The thickness end face of the sliding plate can slide along the groove 2113.

[0061] like Figure 2 and Figure 4 As shown, the battery cell tab bending fixture also includes a force-measuring spring 5, with its two ends abutting against the bending member 22 and the pre-compression part 2122, respectively. The deformation direction of the force-measuring spring 5 is consistent with the sliding direction of the bending member 22. One end of the force-measuring spring 5 is limited to the sliding assembly 21, and the other end is limited to the bending member 22. Under the action of external force, the bending member 22 is pressed towards one side of the main body. The force-measuring spring 5 ensures that the pressing force is constant, making the bending degree of each tab 41 consistent. After the pressing is completed, the external force is removed, and the force-measuring spring automatically rebounds, causing the bending member 22 to return to its original position.

[0062] like Figure 4 As shown, the bending member 22 has a hollow portion 221. The force-measuring spring 5 is located inside the hollow portion 221, with one end of the force-measuring spring 5 abutting against one end of the hollow portion 221 and the other end of the force-measuring spring 5 abutting against the pre-compression portion 2122. The hollow portion 221 is elongated, and the diameter of the cross-section of the force-measuring spring 5 is the same as the dimension of the hollow portion 221 along the width direction. The hollow portion 221 limits the force-measuring spring 5 to only extend and retract along the length direction of the hollow portion 221.

[0063] like Figure 1 and Figure 2As shown, in one possible implementation, the battery cell tab bending fixture includes multiple bending operation components 2, each of which is slidably mounted on the crossbeam 11. This allows the battery cell 4 fixing mechanism 1 to fix multiple battery cells 4 simultaneously, enabling the bending of the tabs 41 of multiple battery cells 4 without requiring individual bending of each tab 41, thus improving the efficiency of the battery cell 4 tab bending operation. The number of bending operation components 2 can be adjusted according to installation requirements, and the length of the crossbeam 11 can also be adjusted as needed.

[0064] In one possible implementation, such as Figure 1 and Figure 2 As shown, the battery cell 4 fixing mechanism 1 includes two brackets 12 and an elastic element 13. Both brackets 12 are slidably mounted on the crossbeam 11, forming a clamping space between them. The elastic element 13 is connected at both ends to the two brackets 12, clamping and fixing the two brackets 12 onto the battery cell 4. The elastic element 13 can be a spring. During the bending operation of the electrode tab 41 of the battery cell 4, one end of the crossbeam 11 is first slid into one of the brackets 12, then the sliding assembly 21 is slid through and inserted into the crossbeam 11, and locked in any position using the locking element 3. Finally, the other bracket 12 is also slid into the crossbeam 11, and the elastic element 13 is then spring-loaded between the two brackets 12. Thus, the battery cell tab bending fixture of this application is assembled. Next, the assembled fixture is pulled apart by a certain pulling force to make the two brackets 12 approximately the same width as the battery cell 4. Then, the entire fixture is snapped onto the battery cell 4, and the elastic element 13 is pulled apart. Under the pulling force of the elastic element 13, the entire fixture clamps the battery cell 4.

[0065] like Figure 3 As shown, the bracket 12 includes a first body 121 and a second body 122. The second body 122 is connected to one side of the first body 121 along its thickness direction. The first body 121 is slidably fitted onto the crossbeam 11. The second body 122 is used to clamp the battery cell 4. The first body 121 and the second body 122 are staggered so that the structures for mounting the crossbeam 11 and clamping the battery cell 4 do not affect each other.

[0066] like Figure 1 and Figure 2As shown, the crossbeam 11 includes at least two long shafts, and the bracket 12 is provided with at least two second through holes 1212. Each of the long shafts passes through a corresponding second through hole 1212, which is located on the first main body 121. When the elastic member 13 is pulled, the long shaft slides along the long shaft, allowing the battery cell tab bending fixture of this application to adapt to battery cells 4 of different lengths. Each of the corresponding long shafts can be made of smooth rods with very smooth outer surfaces, which is beneficial for the sliding of the bending operating member 2 and the bracket 12 along each of the long shafts, and also beneficial for the stability of the elastic member 13 when it is engaged.

[0067] like Figure 2 and Figure 3 As shown, the bracket 12 is provided with an extension 1211, and the two ends of the elastic member 13 are respectively connected to the corresponding extension 1211. The extension 1211 is located on the first body 121, and the extension 1211 extends away from the second body 122. The extension 1211 is located on the same side of the two first bodies 121, which facilitates the connection of the elastic member 13.

[0068] A stepped groove is formed between the first body 121 and the second body 122, and the stepped groove is used for limiting and cooperating with the battery cell 4. The plane in which the stepped groove is located is parallel to the thickness end face of the battery cell 4.

[0069] like Figure 2 and Figure 3 As shown, a top abutment 1221 protrudes from the bracket 12. When the two brackets 12 are clamped between the battery cell 4, the top abutment 1221 abuts against the battery cell 4. The top abutment 1221 protrudes from the second body 122 and abuts between the battery cell 4 and the stepped groove.

[0070] The abutment 1221 includes a column and an elastic component (not shown). The elastic component and the column can be configured in any of the following ways: the column is fixed to the second main body 122, and the elastic component is disposed on the column. With the two brackets 12 clamping the battery cell 4, the elastic component abuts against the battery cell 4. The elastic component can be a spring, sleeved on the column, with one end connected to the second main body 122 and the other end abutting against the battery cell 4. The column guides the extension and retraction direction of the spring, ensuring stable abutment against the battery cell 4. Alternatively, the elastic component can be disposed between the column and the second main body 122. With the two brackets 12 clamping the battery cell 4, the column abuts against the battery cell 4, and the elastic component is in a compressed state. The elastic component can be rubber. The rubber is connected between one end of the column and the second main body 122, and the other end of the column abuts against the battery cell 4. The rubber is elastic and is compressed when the two brackets 12 are clamped to the battery cell 4. Whether the spring or the column abuts against the battery cell 4, it is a point-to-surface contact, resulting in greater friction and making it less likely to come apart. This improves the stability of the battery cell tab bending fixture clamping the battery cell 4.

[0071] like Figure 2 and Figure 3 As shown, the second main body 122 is provided with multiple abutment tops 1221, which are arranged sequentially at intervals along a straight line. When the two brackets 12 are clamped to the battery cell 4, each abutment top 1221 abuts against the thickness end face of the battery cell 4. The thickness end face of the battery cell 4 is in contact with the multiple point-like abutment tops 1221, and the contact friction between the multiple points and the surface is greater, resulting in better stability of clamping the battery cell 4.

[0072] When using the battery cell tab bending fixture of this application to bend the battery cell 4 tab 41, it is first necessary to prepare a corresponding number of bending operation parts 2 and a crossbeam 11 of corresponding length according to the requirements. Then, the battery cell tab bending fixture of this application is assembled. First, one end of each of the long shafts of the crossbeam 11 is sequentially inserted into the second through hole 1212 of a bracket 12. Then, a corresponding number of bending operation parts 2 are sequentially slid into the first through hole 2111a of the bending operation parts 2. Each bending operation part 2 is placed in any position and the first sliding part 211 is locked with the locking part 3 to prevent each bending operation part 2 from sliding arbitrarily on the crossbeam 11. Finally, another bracket 12 is also inserted into the crossbeam 11 through the corresponding second through hole 1212. At this time, each of the bending operation parts 2 is located between the two brackets 12, and finally the elastic member 13 is attached between the extensions 1211 of the two brackets 12, thus completing the assembly of the battery cell tab bending fixture of this application.

[0073] When using the battery cell tab bending fixture of this application, the operator needs to fix one bottom end of the battery cell 4 to be bent onto the fixing base 6, and pull the two brackets 12 apart to the sides with a certain pulling force until they are approximately the same width as the battery cell 4. Then, the extension 1211 on the bracket 12 is pressed against the thickness end face of the battery cell 4, thus clamping the entire battery cell tab bending fixture onto the battery cell 4. The elastic member 13 is stretched and elongated, and the elastic member 13 has the elastic force to stretch the two brackets 12 to the opposite side. The entire fixture clamps and fixes the battery cell 4 through the abutment top 1221, and then the locking member 3 is released. When the first sliding member 211 slides along the crossbeam 11 across the battery cell 4, during the process of pushing the first sliding member 211, the electrode tab 41 slides from the side surface 2122b through the arc surface 2122c to the pre-compression inclined surface 2122a, and the electrode tab 41 bends its overall shape accordingly, thus pre-compressing the electrode tab 41. When the first sliding member is visually positioned at the center of the electrode tab 41, the bending member 22 is pressed, and the bending member 22 moves along the through groove 2122d towards the side of the battery cell 4. The pressing rubber 222 moves along the guide groove 2122e and presses the electrode tab 41 of the battery cell 4 towards the side of the battery cell 4. The force-measuring spring 5 is compressed and shortened, and the pressing rubber 222 contacts the electrode tab 41, flexibly pressing the electrode tab 41 to make it bend. After the crimping is completed, the operator releases their hand, the force-measuring spring 5 elastically recovers, pushes the bending member 22 back to its original position, and the crimping rubber 222 automatically rebounds. Then, the next tab 41 is crimped. After each bending operation member 2 connected to the battery cell tab bending fixture of this application has performed the bending operation on the corresponding tab 41, the battery cell tab bending fixture of this application can be removed from the battery cell 4, and then the next set of battery cell 4 tabs 41 can be crimped. Using the battery cell tab bending fixture of this application to perform the bending operation of the tabs 41 of the battery cell 4 is time-saving and labor-saving. Ordinary operators can use it, and the bending degree of the bent tabs 41 is consistent, making the subsequent laser welding operation of the battery cell 4 tabs 41 convenient and quick, effectively improving the efficiency and consistency of the bending of the battery cell 4 tabs 41.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A battery cell tab bending fixture, characterized in that, include: A cell fixing mechanism is used to fix the cell to a battery cell. The cell fixing mechanism includes an elastic element, two brackets and a crossbeam. The two brackets are slidably sleeved on the crossbeam, and a clamping space is formed between the two brackets. The two ends of the elastic element are respectively connected to the two brackets, so that the two brackets are clamped and fixed to the battery cell. A bending operating component includes a sliding assembly and a bending member. The sliding assembly includes a main body and a pre-pressing part located at one end of the main body. The main body is slidably connected to the crossbeam. The pre-pressing part protrudes from the main body in a direction perpendicular to the sliding surface of the main body. The pre-pressing part has a pre-pressing inclined surface and a through groove. The bending member is slidably connected to the through groove. The sliding direction of the bending member is perpendicular to the sliding direction of the sliding assembly. The bending member can slide along the through groove to one side of the main body to bend the electrode lug. The sliding assembly slides along the crossbeam, and the pre-compression of the pre-compression inclined surface causes the electrode lug to bend at a small angle, weakening its overall structural strength. Then, the bending member is used to press and connect the electrode lug to achieve bending.

2. The battery cell tab folding tool of claim 1, wherein, The crossbeam includes at least two long axes; The sliding assembly has at least two first through holes; Each of the aforementioned long shafts is respectively inserted into the corresponding first through hole.

3. The battery cell tab folding tool of claim 2, wherein, All of the major axes are located in the same plane.

4. The battery cell tab folding tool of claim 2, wherein, Includes a locking element disposed on the sliding assembly for locking the sliding assembly to the long shaft.

5. The battery cell tab bending fixture according to claim 4, characterized in that, The sliding assembly is provided with threaded holes; The threaded hole is connected to the first through hole; The locking element is threaded into the first through hole to abut against the long shaft and lock the position of the sliding assembly.

6. The battery cell tab bending fixture according to any one of claims 1-5, characterized in that, It includes multiple bending operating components, each of which is slidably disposed on the crossbeam.

7. The battery cell tab bending fixture according to any one of claims 1-5, characterized in that, The crossbeam includes at least two long axes; The bracket is provided with at least two second through holes; Each of the aforementioned long shafts is respectively inserted into the corresponding second through hole.

8. The battery cell tab bending fixture according to any one of claims 1-5, characterized in that, The bracket is provided with an extension; The two ends of the elastic element are respectively connected to the corresponding extension.

9. The battery cell tab bending fixture according to any one of claims 1-5, characterized in that, The bracket has a protruding top; With the two brackets clamping the battery cell in place; The top abuts against the battery cell.

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