Lithium battery winding machine and battery cell flattening mechanism

Abstract

The utility model discloses a battery cell flattening mechanism and a lithium battery winding machine, the flattening mechanism comprises a machine table, a material feeding mechanism, a diaphragm cutting mechanism, a battery cell flattening mechanism and a finished product discharging mechanism, the material feeding mechanism, the diaphragm cutting mechanism, the battery cell flattening mechanism and the finished product discharging mechanism are all arranged on the machine table; the battery cell flattening mechanism comprises a winding assembly and a flattening assembly; the material feeding mechanism is used for conveying the battery cell attached to the diaphragm to the winding assembly; the diaphragm cutting mechanism is used for pressing and cutting the diaphragm between the material feeding mechanism and the winding assembly to form independent battery cell individuals; the winding assembly is used for winding the battery cell individuals to form a battery cell primary finished product; the flattening assembly is used for flattening the battery cell primary finished product on the winding assembly to form a battery cell finished product; and the finished product discharging mechanism is used for discharging the battery cell finished products. The battery cell and the diaphragm can be wound and flattened, so that the battery cell and the diaphragm are attached more compactly, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery cell manufacturing technology, and in particular to a lithium battery winding machine and a battery cell flattening mechanism. Background Technology

[0002] Currently, with the continuous popularization of new energy sources, batteries, as renewable energy, are widely used in various fields. Battery cells are an indispensable and equally important component of batteries. In existing technologies, battery cells are often manufactured by attaching the battery chip to the separator and then winding it into shape. However, existing battery cell winding equipment does not have the function of flattening the wound battery cell. This processing method easily causes gaps between the separator and the battery cell, resulting in the battery cell and separator not fitting together. This can lead to problems such as the battery cell not working properly or even short circuits causing safety accidents.

[0003] There is currently no effective solution to the problem that existing lithium battery winding machines do not have the function of flattening the cells, resulting in the separators of the formed cells not adhering properly and easily causing short circuits. Utility Model Content

[0004] In view of this, it is necessary to provide a lithium battery winding machine and a cell flattening mechanism to at least solve the problem that the lithium battery winding machine in the related technology does not have the function of flattening the cell, and the separator of the formed cell is not attached, which easily causes the cell to short circuit.

[0005] In a first aspect, this application provides a battery cell flattening mechanism, which includes a machine base, a material feeding mechanism, a diaphragm cutting mechanism, a battery cell winding mechanism, and a finished product unloading mechanism. The material feeding mechanism, the diaphragm cutting mechanism, the battery cell winding mechanism, and the finished product unloading mechanism are all mounted on the machine base. The battery cell winding mechanism includes a winding assembly and a flattening assembly.

[0006] A material feeding mechanism is used to transfer the battery cells attached to the diaphragm to the winding assembly;

[0007] A diaphragm cutting mechanism is used to press and cut the diaphragm between the material feeding mechanism and the winding assembly to form an independent battery cell.

[0008] A winding assembly is used to wind the individual battery cells to form a preliminary battery cell product;

[0009] A flattening assembly is used to flatten the initial battery cell on the winding assembly to form a finished battery cell.

[0010] The finished product unloading mechanism is used to unload the finished battery cells.

[0011] In some embodiments, the winding assembly includes a winding adjustment device, a first winding device, and a second winding device. The winding adjustment device is disposed on the support plate, and the first winding device and the second winding device are both disposed on the winding adjustment device. The winding adjustment device is used to adjust the positions of the first winding device and the second winding device, so that the positions of the first winding device and the second winding device are exchanged. The first winding device and the second winding device are used to wind the individual battery cell.

[0012] In some embodiments, the winding adjustment device includes a turntable driver, a turntable, and an auxiliary support. The turntable and the turntable driver are both mounted on the support plate and are kinetically connected. The auxiliary support is located in the middle of the turntable, and the first winding device and the second winding device are located on opposite sides of the auxiliary support. The turntable driver is used to drive the turntable to rotate on the support plate, thereby exchanging the positions of the first winding device and the second winding device.

[0013] In some embodiments, both the first winding device and the second winding device include a winding telescopic rod, a winding drive unit, and a telescopic drive unit. The winding drive unit and the telescopic drive unit are both tractively connected to the winding telescopic rod. The auxiliary support is provided with a fixed rod for limiting the swing of the winding telescopic rod, and rotating bearings are provided on both sides of the fixed rod. The winding drive unit is used to drive the winding telescopic rod to wind the individual battery cell, and the telescopic drive unit is used to drive the winding telescopic rod to insert into or pull out of the rotating bearings.

[0014] In some embodiments, the winding drive unit includes a winding drive component and a winding transmission component. The winding drive component is operatively connected to the winding telescopic rod via the winding transmission component. The telescopic drive unit includes a telescopic drive component and a telescopic transmission component. The telescopic drive component is operatively connected to the winding telescopic rod via the telescopic transmission component. Before the individual battery cell is wound, the telescopic drive component drives the winding telescopic rod to insert into the rotating bearing via the telescopic transmission component. The winding drive component then drives the winding telescopic rod to rotate and wind the cell, forming a preliminary battery cell product. After the individual battery cell is wound, the telescopic drive component drives the winding telescopic rod to pull out of the rotating bearing via the telescopic transmission component. The turntable drive component then drives the turntable to rotate on the support plate, causing the winding telescopic rod of the first winding device to exchange with the winding telescopic rod of the second winding device.

[0015] In some embodiments, the flattening assembly includes a flattening lifting device and a flattening clamping device. The flattening lifting device is fixed on the support plate, and the flattening clamping device is disposed on the flattening lifting device and located above the winding telescopic rod of the second winding device. The flattening lifting device is used to drive the flattening clamping device to perform lifting and lowering movements, and the flattening clamping device is used to flatten the initial battery cell product on the winding telescopic rod of the first winding device or the second winding device to form a finished battery cell product.

[0016] In some embodiments, the material feeding mechanism includes a first material feeding component and a second material feeding component. Both the first and second material feeding components are located to the left of the turntable, with the first material feeding component positioned above the second material feeding component. The first material feeding component is inclined downwards, and the second material feeding component is inclined upwards. Both the first and second material feeding components include a feeding track and a feeding auxiliary wheel. The first and second material feeding components are used to convey the battery cells attached to the diaphragm to the winding telescopic rod of the first or second winding device.

[0017] In some embodiments, the diaphragm cutting mechanism includes a pressing component and a cutting component. The pressing component includes a first pressing component and a second pressing component disposed opposite to each other. The first pressing component is located above the second pressing component, and a pressing area is formed between the first pressing component and the second pressing component. The pressing area is located between the feeding auxiliary wheel and the winding telescopic rod. The cutting component includes a first cutting component and a second cutting component disposed opposite to each other. The first cutting component is located above the second cutting component, and a cutting area is formed between the first cutting component and the second cutting component. The cutting area is located between the winding telescopic rod and the auxiliary support. The pressing component is used to bond the battery cells attached to the diaphragm by the first material feeding component and the battery cells attached to the diaphragm by the second material feeding component together. The cutting component is used to cut the diaphragm to form individual battery cells.

[0018] In some embodiments, the finished product unloading mechanism includes a finished product clamping component and a finished product unloading component, which are located on the right side of the turntable. The finished product clamping component is positioned above the finished product unloading component, and the finished product unloading component is inclined downward. The finished product clamping component is used to clamp the finished battery cell and place it on the finished product unloading component, and the finished product unloading component is used to unload the finished battery cell.

[0019] Secondly, this application also provides a lithium battery winding machine, which includes the cell flattening mechanism described in the first aspect above.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This application provides a lithium battery winding machine and a cell flattening mechanism, which integrates a material feeding mechanism, a separator cutting mechanism, a cell flattening mechanism and a finished product unloading mechanism. It automatically realizes the functions of material feeding, separator pressing and cutting, cell winding, cell flattening and finished product unloading. By adding a flattening component to the winding component, this application flattens the wound cell while completing the cell winding, so that each layer of cell and separator are tightly bonded, which greatly improves the safety performance of the cell, ensures the normal operation of the cell, and reduces the occurrence of cell short circuit problems. It is highly practical. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of this application with the support plate removed;

[0023] Figure 3 This is a schematic diagram of the material feeding mechanism and the battery cell winding mechanism according to an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the diaphragm cutting mechanism and the battery cell winding mechanism according to an embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the battery cell winding mechanism from one perspective of an embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the cell winding mechanism from another perspective, according to an embodiment of this application.

[0027] Figure label:

[0028] 100. Support plate;

[0029] 200. Material feeding mechanism; 21. First material feeding assembly; 22. Second material feeding assembly; 221. Feeding track; 222. Feeding auxiliary wheel;

[0030] 300. Diaphragm cutting mechanism; 31. Pressing assembly; 311. First pressing assembly; 312. Second pressing assembly; 32. Cutting assembly; 321. First cutting assembly; 322. Second cutting assembly;

[0031] 400. Battery cell winding mechanism; 41. Winding assembly; 411. Winding adjustment device; 4111. Turntable drive; 4112. Turntable; 4113. Auxiliary support; 4114. Fixing rod; 4115. Rotary bearing; 412. First winding device; 4121. Winding telescopic rod; 4122. Winding drive unit; 4123. Telescopic drive unit; 413. Second winding device; 42. Flattening assembly; 421. Flattening lifting device; 422. Flattening clamping device;

[0032] 500. Finished product unloading mechanism; 51. Finished product clamping assembly; 52. Finished product unloading assembly. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that when a component is said to be "mounted on" another component, it can be directly mounted on the other component or may be interspersed with a component. When a component is said to be "set on" another component, it can be directly set on the other component or may be interspersed with a component. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or may be interspersed with a component.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] See Figure 1-2 This application provides a battery cell flattening mechanism, which includes a machine base 100, a material feeding mechanism 200, a diaphragm cutting mechanism 300, a battery cell winding mechanism 400, and a finished product unloading mechanism 500. The material feeding mechanism 200, the diaphragm cutting mechanism 300, the battery cell winding mechanism 400, and the finished product unloading mechanism 500 are all mounted on the machine base 100. The battery cell winding mechanism 400 includes a winding assembly 41 and a flattening assembly 42.

[0037] The material feeding mechanism 200 is used to transfer the battery cells attached to the diaphragm to the winding assembly 41;

[0038] The diaphragm cutting mechanism 300 is used to press and cut the diaphragm between the material feeding mechanism 200 and the winding assembly 41 to form an independent battery cell.

[0039] The winding assembly 41 is used to wind individual battery cells to form a preliminary battery cell product;

[0040] Flattening component 42 is used to flatten the initial battery cell product on winding component 41 to form the finished battery cell product;

[0041] The finished product unloading mechanism 500 is used to unload finished battery cells.

[0042] Understandably, this setup integrates the material feeding mechanism 200, the diaphragm cutting mechanism 300, the cell winding and flattening mechanism 400, and the finished product unloading mechanism 500 into one unit, automating the functions of material feeding, diaphragm pressing and cutting, cell winding, cell flattening, and finished product unloading. This application, through the structural design of adding a flattening component 42 to the winding component 41, flattens the wound cells while completing the cell winding, thereby ensuring a tight fit between each cell layer and the diaphragm, greatly improving the safety performance of the cells, ensuring the normal operation of the cells, and reducing the occurrence of cell short circuits.

[0043] To achieve efficient winding and flattening, in some optional embodiments, the winding assembly 41 includes a winding adjustment device 411, a first winding device 412, and a second winding device 413. The winding adjustment device 411 is mounted on the support plate 100, and the first winding device 412 and the second winding device 413 are both mounted on the winding adjustment device 411. The winding adjustment device 411 is used to adjust the positions of the first winding device 412 and the second winding device 413, so that the positions of the first winding device 412 and the second winding device 413 are exchanged. The first winding device 412 and the second winding device 413 are used to wind individual battery cells.

[0044] It is understandable that with this setup, by using the winding adjustment device 411 to swap the positions of the first winding device 412 and the second winding device 413, this application can achieve the function of dual-station winding. After the first winding device 412 has wound the battery cell, the winding adjustment device 411 swaps the positions of the first winding device 412 and the second winding device 413, so that the material feeding mechanism 200 winds the second winding device 413, and the battery cell on the first winding device 412 is flattened and unloaded.

[0045] To enable the interchange of positions between the first winding device 412 and the second winding device 413, in some optional embodiments, the winding adjustment device 411 includes a turntable drive 4111, a turntable 4112, and an auxiliary support 4113. The turntable 4112 and the turntable drive 4111 are both mounted on the support plate 11, and the turntable 4112 and the turntable drive 4111 are connected in a transmission manner. The auxiliary support 4113 is located in the middle of the turntable 4112, and the first winding device 412 and the second winding device 413 are located on both sides of the auxiliary support 4113. The turntable drive 4111 is used to drive the turntable 4112 to rotate on the support plate 11, thereby exchanging the positions of the first winding device 412 and the second winding device 413.

[0046] Furthermore, the turntable drive 4111 uses a drive motor or drive cylinder as a power source. Both the drive motor and drive cylinder have high precision, thereby driving the turntable 4112 to rotate precisely to the designated work position. At the same time, the auxiliary support 4113 can assist in the transition of the diaphragm, so that the diaphragm can be better conveyed.

[0047] To achieve the winding function, in some optional embodiments, both the first winding device 412 and the second winding device 413 include a winding telescopic rod 4121, a winding drive unit 4122, and a telescopic drive unit 4123. The winding drive unit 4122 and the telescopic drive unit 4123 are both connected to the winding telescopic rod 4121. The auxiliary bracket 4113 is provided with a fixing rod 4114 for limiting the swing of the winding telescopic rod 4121. Rotary bearings 4115 are provided on both sides of the fixing rod 4114. The winding drive unit 4122 is used to drive the winding telescopic rod 4121 to wind the individual battery cells, and the telescopic drive unit 4123 is used to drive the winding telescopic rod 4121 to insert or pull out the rotary bearings 4115.

[0048] To further realize the winding function, in some optional embodiments, the winding drive unit 4122 includes a winding drive component and a winding transmission component. The winding drive component is connected to the winding telescopic rod 4121 through the winding transmission component. The telescopic drive unit 4123 includes a telescopic drive component and a telescopic transmission component. The telescopic drive component is connected to the winding telescopic rod 4121 through the telescopic transmission component. Before winding the individual battery cell, the telescopic drive component drives the winding telescopic rod 4121 to insert into the rotating bearing 4115 through the telescopic transmission component. The winding drive component drives the winding telescopic rod 4121 to rotate and wind the battery cell to form a preliminary battery cell product. After winding the individual battery cell, the telescopic drive component drives the winding telescopic rod 4121 to pull out of the rotating bearing 4115 through the telescopic transmission component. Then, the turntable drive component 4111 drives the turntable 4112 to rotate on the support plate 11, so that the winding telescopic rod 4121 of the first winding device 412 and the winding telescopic rod 4121 of the second winding device 413 are exchanged.

[0049] Furthermore, both the winding drive and the telescopic drive are driven by motors. The motors have high precision, which better drives the winding telescopic rod 4121 to perform the winding process and to extend and adjust the winding telescopic rod 4121 to avoid misalignment.

[0050] In some alternative embodiments, the flattening assembly 42 includes a flattening lifting device 421 and a flattening clamping device 422. The flattening lifting device 421 is fixed on the support plate 11, and the flattening clamping device 422 is disposed on the flattening lifting device 421 and located above the winding telescopic rod 4121 of the second winding device 413. The flattening lifting device 421 is used to drive the flattening clamping device 422 to perform lifting and lowering movements, and the flattening clamping device 422 is used to flatten the initial battery cell product on the winding telescopic rod 4121 of the first winding device 412 or the second winding device 413 to form the finished battery cell product.

[0051] It should be noted that by adopting the structural design of the flattening lifting device 421, the flattening clamping device 422 can be accurately transported to the designated position. By adopting the structural design of the flattening clamping device 422, the wound battery cell is flattened and clamped, so that each layer of the wound battery cell can be tightly attached to each other, preventing the problem of gaps between the layers of battery cells.

[0052] To achieve the cell feeding function, in some optional embodiments, the material feeding mechanism 200 includes a first material feeding component 21 and a second material feeding component 22. Both the first material feeding component 21 and the second material feeding component 22 are located on the left side of the turntable 4112. The first material feeding component 21 is located above the second material feeding component 22. The first material feeding component 21 is inclined downward, and the second material feeding component 22 is inclined upward. Both the first material feeding component 21 and the second material feeding component 22 include a feeding track 221 and a feeding auxiliary wheel 222. The first material feeding component 21 and the second material feeding component 22 are used to convey the cells attached to the diaphragm to the winding telescopic rod 4121 of the first winding device 412 or the second winding device 413.

[0053] To achieve the functions of diaphragm cutting and forming individual battery cells, in some optional embodiments, the diaphragm cutting mechanism 300 includes a clamping assembly 31 and a cutting assembly 32. The clamping assembly 31 includes a first clamping assembly 311 and a second clamping assembly 312 disposed opposite to each other. The first clamping assembly 311 is located above the second clamping assembly 312, and a clamping area is formed between the first clamping assembly 311 and the second clamping assembly 312. The clamping area is located between the feeding auxiliary wheel 222 and the winding telescopic rod 4121. The cutting assembly 32 includes a first clamping assembly 311 and a second clamping assembly 312 disposed opposite to each other. The first cutting component 321 is located above the second cutting component 322, and a cutting area is formed between the first cutting component 321 and the second cutting component 322. The cutting area is located between the winding telescopic rod 4121 and the auxiliary support 4113. The pressing component 31 is used to bond the battery cells attached to the diaphragm by the first material feeding component 21 and the battery cells attached to the diaphragm by the second material feeding component 22 together. The cutting component 32 is used to cut the diaphragm to form independent battery cell units.

[0054] To achieve the cell feeding function, in some optional embodiments, the finished product feeding mechanism 500 includes a finished product clamping component 51 and a finished product feeding component 52. The finished product clamping component 51 and the finished product feeding component 52 are located on the right side of the turntable 4112. The finished product clamping component 51 is located above the finished product feeding component 52, and the finished product feeding component 52 is inclined downward. The finished product clamping component 51 is used to clamp the finished cell and place it on the finished product feeding component 52, and the finished product feeding component 52 is used to feed the finished cell.

[0055] This application also provides a lithium battery winding machine, which includes the cell flattening mechanism described in the above embodiments.

[0056] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. A cell flattening mechanism, characterized in that, It includes a support plate (100), a material feeding mechanism (200), a diaphragm cutting mechanism (300), a cell winding mechanism (400), and a finished product unloading mechanism (500). The material feeding mechanism (200), the diaphragm cutting mechanism (300), the cell winding mechanism (400), and the finished product unloading mechanism (500) are all mounted on the support plate (100). The cell winding mechanism (400) includes a winding assembly (41) and a flattening assembly (42). The material feeding mechanism (200) is used to transfer the battery cells attached to the diaphragm to the winding assembly (41); The diaphragm cutting mechanism (300) is used to press and cut the diaphragm between the material feeding mechanism (200) and the winding assembly (41) to form an independent battery cell. The winding assembly (41) is used to wind the individual battery cells to form a preliminary battery cell product; The flattening assembly (42) is used to flatten the initial battery cell product on the winding assembly (41) to form the finished battery cell product; The finished product unloading mechanism (500) is used to unload the finished battery cell.

2. The cell flattening mechanism according to claim 1, characterized in that, The winding assembly (41) includes a winding adjustment device (411), a first winding device (412), and a second winding device (413). The winding adjustment device (411) is disposed on the support plate (100), and the first winding device (412) and the second winding device (413) are both disposed on the winding adjustment device (411). The winding adjustment device (411) is used to adjust the positions of the first winding device (412) and the second winding device (413) so that the positions of the first winding device (412) and the second winding device (413) are exchanged. The first winding device (412) and the second winding device (413) are used to wind the individual battery cells.

3. The cell flattening mechanism according to claim 2, characterized in that, The winding adjustment device (411) includes a turntable drive (4111), a turntable (4112), and an auxiliary support (4113). The turntable (4112) and the turntable drive (4111) are both mounted on the support plate (100). The turntable (4112) and the turntable drive (4111) are connected in a transmission manner. The auxiliary support (4113) is located in the middle of the turntable (4112). The first winding device (412) and the second winding device (413) are located on both sides of the auxiliary support (4113). The turntable drive (4111) is used to drive the turntable (4112) to rotate on the support plate (100), thereby exchanging the positions of the first winding device (412) and the second winding device (413).

4. The cell flattening mechanism according to claim 3, characterized in that, Both the first winding device (412) and the second winding device (413) include a winding telescopic rod (4121), a winding drive unit (4122), and a telescopic drive unit (4123). The winding drive unit (4122) and the telescopic drive unit (4123) are both connected to the winding telescopic rod (4121) in a transmission manner. The auxiliary bracket (4113) is provided with a fixed rod (4114) for limiting the swing of the winding telescopic rod (4121). Rotary bearings (4115) are provided on both sides of the fixed rod (4114). The winding drive unit (4122) is used to drive the winding telescopic rod (4121) to wind the individual battery cell, and the telescopic drive unit (4123) is used to drive the winding telescopic rod (4121) to insert or pull out the rotary bearing (4115).

5. The cell flattening mechanism according to claim 4, characterized in that, The winding drive unit (4122) includes a winding drive component and a winding transmission component. The winding drive component is connected to the winding telescopic rod (4121) via the winding transmission component. The telescopic drive unit (4123) includes a telescopic drive component and a telescopic transmission component. The telescopic drive component is connected to the winding telescopic rod (4121) via the telescopic transmission component. Before the individual battery cell is wound, the telescopic drive member drives the winding telescopic rod (4121) to insert into the rotating bearing (4115) through the telescopic transmission member. The winding drive member drives the winding telescopic rod (4121) to rotate and wind the battery cell to form a preliminary battery cell product. After the individual battery cell is wound, the telescopic drive member drives the winding telescopic rod (4121) to pull out the rotating bearing (4115) through the telescopic transmission member, and then drives the turntable (4112) to rotate on the support plate (100) through the turntable drive member (4111), so that the winding telescopic rod (4121) of the first winding device (412) and the winding telescopic rod (4121) of the second winding device (413) are exchanged.

6. The cell flattening mechanism according to claim 5, characterized in that, The flattening assembly (42) includes a flattening lifting device (421) and a flattening clamping device (422). The flattening lifting device (421) is fixed on the support plate (100), and the flattening clamping device (422) is located on the flattening lifting device (421) and above the winding telescopic rod (4121) of the second winding device (413). The flattening lifting device (421) is used to drive the flattening clamping device (422) to perform lifting and lowering movements, and the flattening clamping device (422) is used to flatten the initial battery cell product on the winding telescopic rod (4121) of the first winding device (412) or the second winding device (413) to form the finished battery cell product.

7. The cell flattening mechanism according to claim 6, characterized in that, The material feeding mechanism (200) includes a first material feeding component (21) and a second material feeding component (22). Both the first material feeding component (21) and the second material feeding component (22) are located on the left side of the turntable (4112). The first material feeding component (21) is located above the second material feeding component (22). The first material feeding component (21) is inclined downward, and the second material feeding component (22) is inclined upward. Both the first material feeding component (21) and the second material feeding component (22) include a feeding track (221) and a feeding auxiliary wheel (222). The first material feeding component (21) and the second material feeding component (22) are used to transfer the battery cells attached to the diaphragm to the winding telescopic rod (4121) of the first winding device (412) or the second winding device (413).

8. The cell flattening mechanism according to claim 7, characterized in that, The diaphragm cutting mechanism (300) includes a pressing assembly (31) and a cutting assembly (32). The pressing assembly (31) includes a first pressing assembly (311) and a second pressing assembly (312) arranged opposite to each other. The first pressing assembly (311) is located above the second pressing assembly (312), and a pressing area is formed between the first pressing assembly (311) and the second pressing assembly (312). The pressing area is located between the feeding auxiliary wheel (222) and the winding telescopic rod (4121). The cutting assembly (32) includes a first cutting assembly (321) and a second cutting assembly arranged opposite to each other. (322), the first cutting component (321) is located above the second cutting component (322), and a cutting area is formed between the first cutting component (321) and the second cutting component (322). The cutting area is located between the winding telescopic rod (4121) and the auxiliary bracket (4113). The pressing component (31) is used to bond the battery cell attached to the diaphragm by the first material feeding component (21) and the battery cell attached to the diaphragm by the second material feeding component (22) together. The cutting component (32) is used to cut the diaphragm to form an independent battery cell.

9. The cell flattening mechanism according to claim 8, characterized in that, The finished product unloading mechanism (500) includes a finished product clamping component (51) and a finished product unloading component (52). The finished product clamping component (51) and the finished product unloading component (52) are located on the right side of the turntable (4112). The finished product clamping component (51) is located above the finished product unloading component (52), and the finished product unloading component (52) is inclined downward. The finished product clamping component (51) is used to clamp the finished battery cell and place it on the finished product unloading component (52), and the finished product unloading component (52) is used to unload the finished battery cell.

10. A lithium battery winding machine, characterized in that, Includes the cell flattening mechanism according to any one of claims 1 to 9.

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