Battery cell aluminum plastic film edge cutting device

Abstract

The utility model discloses a kind of battery aluminum plastic film edge cutting device, battery includes battery body and aluminum plastic film edge, the battery aluminum plastic film edge cutting device is used to cut the aluminum plastic film edge and includes base, cutting module and compression module, base is used to place battery, limit device is equipped on base, limit device is used to limit battery;Cutting module is equipped on base, when battery is placed on base, cutting module is equipped under aluminum plastic film edge;Compression module movably cooperates with base or disengages cooperation, when compression module cooperates with base, compression module and base stop, compression module is pressed to cutting module with aluminum plastic film edge, cutting module is used to cut aluminum plastic film edge.According to the battery aluminum plastic film edge cutting device of the utility model, cutting of aluminum plastic film edge is realized by compression module pressing aluminum plastic film edge, reduce the movement of cutting module, avoid affecting cutting accuracy, while the cutting efficiency of edge cutting device can be improved, improve the production efficiency of battery.

Description

Technical Field

[0001] This utility model relates to the field of battery cell tooling technology, and in particular to a battery cell aluminum-plastic film edge cutting device. Background Technology

[0002] After the battery cell is sealed with aluminum-plastic film on the top and side, the excess packaging edges need to be precisely and neatly trimmed to ensure the appearance quality and dimensional specifications of the battery cell. In existing technologies, common methods for trimming and chamfering aluminum-plastic film edges and corners mainly include: 1. Fully automatic trimming machines, which have high investment and maintenance costs, and require significant time for tooling adjustments and program switching during product changes, placing high demands on debugging and maintenance personnel. 2. Manual cutting, where operators use cutting knives, which is inefficient and prone to causing quality problems such as burrs, uneven edges, and large dimensional deviations, and also poses personnel safety risks. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery cell aluminum-plastic film trimming device. The device has a relatively simple structure, low manufacturing cost, and high trimming efficiency, thereby improving the production efficiency of battery cells.

[0004] According to an embodiment of the present invention, a battery cell aluminum-plastic film edge-cutting device includes a battery cell body and an aluminum-plastic film edge seal. The battery cell aluminum-plastic film edge-cutting device is used to cut the aluminum-plastic film edge seal and includes a base for placing the battery cell. The base is provided with a limiting device for limiting the battery cell. A cutting module is disposed on the base. When the battery cell is placed on the base, the cutting module is disposed on the underside of the aluminum-plastic film edge seal. A pressing module is movably engaged with or disengaged from the base. When the pressing module is engaged with the base, the pressing module abuts against the base. The pressing module presses the aluminum-plastic film edge seal against the cutting module. The cutting module is used to cut the aluminum-plastic film edge seal.

[0005] According to the embodiments of this utility model, the aluminum-plastic film edge-cutting device for battery cells features a base, a cutting module mounted on the base, and a battery cell mounted on the base. The aluminum-plastic film edge is cut by pressing down on it using a pressing module. This reduces movement of the cutting module, avoids displacement caused by vibration during movement, and prevents impact on cutting accuracy. Furthermore, the structure is relatively simple and the manufacturing cost is low. Simultaneously, it improves the cutting efficiency of the edge-cutting device and increases the production efficiency of the battery cells.

[0006] In some embodiments of this utility model, the cutting module includes: a blade, the blade being disposed on the base, the blade surrounding the battery cell body, the battery cell body being connected to a tab, and the blade having a notch to avoid the tab.

[0007] In some embodiments of this utility model, the pressing module has a cutting groove on the side facing the base that cooperates with the blade, and a portion of the blade is adapted to extend into the cutting groove; and / or, the thickness of the blade is L, and satisfies: 0.2mm≤L≤1mm.

[0008] In some embodiments of this utility model, the blade has a cutting edge at one end away from the base, the cutting edge has a cutting bevel, the cutting bevel is adapted to be located on the side of the cutting edge away from the cell body, and the cutting bevel is inclined toward the cell body in the direction from the base to the blade.

[0009] In some embodiments of this utility model, there is an included angle E between the cutting bevel and the thickness direction of the blade, and the following condition is met: 82°≤E≤88°.

[0010] In some embodiments of this utility model, the battery cell further includes a tab, one end of which is connected to the battery cell body and the other end extends in a direction away from the battery cell body. The limiting device includes a positioning block, which is disposed on the base. The positioning block includes two sets of positioning blocks spaced apart, and the tab is disposed between the two sets of positioning blocks.

[0011] In some embodiments of this utility model, the limiting device further includes: a CCD vision system disposed on the base for identifying the position of the battery cell; and / or, the base is provided with a mounting groove, and a portion of the battery cell is disposed in the mounting groove.

[0012] In some embodiments of this utility model, the pressing module is provided with a clearance groove to avoid the battery cell body.

[0013] In some embodiments of this utility model, the battery cell aluminum-plastic film trimming device further includes a driving device, which is disposed on the base and is used to drive the pressing module to move.

[0014] In some embodiments of this utility model, the driving device includes a cylinder that drives the pressing module to move toward or away from the base.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1This is a perspective view of the edge-cutting device according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the edge-cutting device according to an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the edge-cutting device according to an embodiment of the present utility model from another angle; Figure 4 This is a perspective view of the trimming device for removing the trimming module according to an embodiment of the present utility model; Figure 5 This is a cross-sectional view of the trimming device for removing the trimming module according to an embodiment of the present utility model; Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7 This is a cross-sectional view of the trimming device removing the trimming module from another angle according to an embodiment of the present invention.

[0017] Figure label: 100. Edge trimming device; 1. Base; 2. Cutting module; 21. Blade; 22. Notch; 23. Cutting edge; 3. Pressing module; 31. Clearance groove; 32. Cutting groove; 33. Limiting groove; 4. Positioning block; 5. Drive device; 6. Limiting post; 7. Limiting hole; 8. Limiting device; 200. Battery cell; 201. Battery cell body; 202. Aluminum-plastic film; 203. Aluminum-plastic film edge sealing; 204. Tab. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The following is for reference. Figures 1-7 Description of a battery cell aluminum-plastic film trimming device 100 according to an embodiment of the present utility model.

[0022] The battery cell 200 includes a cell body 201 and an aluminum-plastic film sealing edge 203. The cell body 201 includes electrode groups, and the aluminum-plastic film 202 can wrap the electrode groups to ensure the stability and safety of the battery cell 200 during long-term use. The battery cell aluminum-plastic film cutting device 100 is used to cut the aluminum-plastic film sealing edge 203 of the aluminum-plastic film 202 to ensure that the external dimensions of each battery cell 200 meet the design requirements, facilitating subsequent integration and assembly.

[0023] like Figure 1 and Figure 2 As shown, the battery cell aluminum-plastic film trimming device 100 according to an embodiment of the present invention includes a base 1, a cutting module 2 and a pressing module 3.

[0024] Specifically, such as Figure 4As shown, the base 1 is used to place the battery cell 200. The base 1 is equipped with a limiting device 8, which limits the battery cell 200 to prevent displacement and ensures the reliable position of the aluminum-plastic film sealing edge 203. The cutting module 2 is located on the base 1. The pressing module 3 can be movably engaged with or disengaged from the base 1. When the pressing module 3 is engaged with the base 1, the pressing module 3 and the base 1 abut against each other, and the pressing module 3 presses the aluminum-plastic film sealing edge 203 toward the cutting module 2. The cutting module 2 is used to cut the aluminum-plastic film sealing edge 203.

[0025] exist Figure 1 and Figure 2 In the example shown, the cutting module 2 is located on the upper surface of the base, and the battery cell 200 is placed on the upper surface of the base 1. When the battery cell is placed on the base 1, the cutting module 2 is located on the lower side of the aluminum-plastic film sealing edge 203. When the pressing module 3 moves toward the position that mates with the base 1, for example, when the pressing module 3 moves downward on the upper side of the base 1, the pressing module 3 presses down on the aluminum-plastic film sealing edge 203, so that the aluminum-plastic film sealing edge 203 contacts the cutting module 2, and the cutting module 2 cuts the aluminum-plastic film sealing edge 203.

[0026] Compared to fully automatic edge cutting machines, the aluminum-plastic film edge cutting device 100 for battery cells has a simpler structure and lower manufacturing cost. Compared to manual cutting, the aluminum-plastic film edge cutting device 100 for battery cells can improve the cutting efficiency of the edge cutting device 100 and increase the production efficiency of the battery cells 200.

[0027] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the pressing module 3 is provided with a clearance groove 31 to avoid the battery cell body 201. When the pressing module 3 moves toward the position to cooperate with the base 1, for example, when the pressing module 3 moves downward above the base 1, the clearance groove 31 on the pressing module 3 avoids the battery cell body 201. The pressing module 3 presses down the aluminum-plastic film sealing edge 203, so that the aluminum-plastic film sealing edge 203 contacts the cutting module 2, and the cutting module 2 cuts the aluminum-plastic film sealing edge 203.

[0028] In some embodiments, there is a gap between the inner peripheral wall of the clearance groove 31 and the outer peripheral wall of the cell body 201, which further reduces the risk of interference between the cell body 201 and the pressing module 3.

[0029] According to an embodiment of this utility model, the aluminum-plastic film edge-cutting device 100 for battery cells includes a base 1, a cutting module 2 mounted on the base 1, and a battery cell 200 mounted on the base 1. The cutting module 2 cuts the aluminum-plastic film edge 203 by pressing down on it using a pressing module 3. This reduces the movement of the cutting module 2, avoids displacement caused by vibration during movement, and prevents impact on cutting accuracy. Furthermore, the structure is relatively simple and the manufacturing cost is low. Simultaneously, it improves the cutting efficiency of the edge-cutting device 100 and the production efficiency of the battery cell 200.

[0030] In this embodiment, the base 1 serves as the substrate of the tooling and is preferably made of stainless steel or high-strength engineering plastic through precision machining. It provides a stable support reference and sufficient rigidity for the battery cell aluminum-plastic film cutting device 100, ensuring no deformation during the cutting process. The pressing module 3 is made of high-strength engineering plastic, combining rigidity, toughness, and visibility.

[0031] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the cutting module 2 includes a blade 21, which is mounted on the base 1 and surrounds the battery cell body 201. By setting the blade 21 around the battery cell body 201, the blade 21 can cut the aluminum-plastic film sealing edge 203 of the battery cell body 201 in one go when the pressing module 3 presses it, thereby increasing the cutting efficiency of the cutting device 100 and making the cutting device 100 work more efficiently.

[0032] In this embodiment, the blade 21 is a high-hardness alloy blade. The blade 21 has high strength and strong resistance to wear, which greatly extends the service life of the blade 21 and reduces the frequency of blade replacement and sharpening.

[0033] In some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, there are two blades 21, which together surround the battery cell body 201. A tab 204 is connected to the battery cell body 201. A notch 22 is defined between the two blades 21 to avoid the tab 204. It can be understood that the inner layer of the aluminum-plastic film 202 is fused to the tab 204 with tab adhesive, forming a "glue-metal-glue" seal. The notch 22 on the blades 21 avoids damaging the sealing structure near the tab 204, thus preventing damage to the seal integrity near the tab 204.

[0034] Meanwhile, the tab 204 is usually made of metal. The blade 21 avoids the tab 204, which can prevent the tab 204 from damaging the blade 21 and thus avoid affecting the life of the cutting device 100.

[0035] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the pressing module 3 has a cutting groove 32 on the side facing the base 1 that mates with the blade 21, and a portion of the blade 21 is adapted to extend into the cutting groove 32. The cutting groove 32 can be used to avoid the blade 21, preventing problems such as blade chipping caused by direct contact between the blade 21 and the pressing module 3, thus increasing the service life of the blade 21. At the same time, the pressing module 3 can better press the aluminum-plastic film edge 203 against the base 1, resulting in a better cutting effect of the blade 21 on the aluminum-plastic film edge 203.

[0036] In some embodiments of this utility model, such as Figure 6 As shown, the thickness of the blade 21 is L, and it satisfies the condition: 0.2mm ≤ L ≤ 1mm. It can be understood that the thickness of the blade 21 can be 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, or 1mm. A thickness of not less than 0.2mm prevents the blade from being too thin and prone to chipping; a thickness of not more than 1mm prevents the blade from being too thick, thus avoiding an excessively thick cut in the aluminum-plastic film sealing edge 203 and a narrower sealing width.

[0037] In some embodiments of this utility model, such as Figure 6 As shown, the blade 21 has a cutting edge 23 at the end facing away from the base 1. The cutting edge 23 has a cutting bevel, which is adapted to be located on the side of the cutting edge 23 facing away from the cell body 201. In the direction from the base 1 to the blade 21, the cutting bevel is inclined towards the cell body 201. Thus, when the pressing module 3 moves towards the base 1, the blade 21 and the cutting groove 32 form a shearing force, precisely controlling the separation point (cut) of the aluminum-plastic film sealing edge 203 at the blade tip. Since the blade tip is close to the cell body 201, the tearing stress and deformation generated by punching will naturally be directed towards and released to the external waste area. The sealing area of ​​the cell body 201 is completely unaffected by the punching stress, thereby completely avoiding the risk of wrinkles or interlayer separation of the aluminum-plastic film 202 caused by cutting, and the sealing area remains in its original and intact state.

[0038] Meanwhile, because the sharp corner of the blade 23 is the positioning reference, the cutting bevel is inclined toward the cell body 201 in the direction from the base 1 to the blade 21. The position of the cutting line of the blade 21 is precisely fixed at a specific distance from the cell body 201, so that the effective sealing width is approximately the same as the designed sealing width, thus improving the cutting accuracy.

[0039] In some embodiments of this utility model, such as Figure 6As shown, there is an angle E between the cutting bevel and the thickness direction of the blade 21, satisfying: 82°≤E≤88°. It can be understood that the angle between the cutting bevel and the thickness direction of the blade 21 can be 82°, 82.5°, 83°, 83.5°, 84°, 84.5°, 85°, 85.5°, 86°, 86.5°, 87°, 87.5°, or 88°. An angle of not less than 82° between the cutting bevel and the thickness direction of the blade 21 avoids a blunt cutting edge 23, thus preventing the blade 21 from affecting the cutting accuracy of the aluminum-plastic film edge banding 203. An angle of not more than 88° between the cutting bevel and the thickness direction of the blade 21 prevents the cutting edge 23 of the blade 21 from being too sharp, thus preventing the cutting edge 23 from easily breaking under force and affecting the service life of the blade 21. The angle between the cutting bevel and the thickness direction of the blade 21 is between 82° and 88°, which can achieve minimal cutting resistance and optimal cut quality, effectively preventing delamination and burr formation of the aluminum-plastic film 202.

[0040] In some embodiments of this utility model, such as Figure 4 , Figure 5 and Figure 7 As shown, the battery cell 200 also includes a tab 204. One end of the tab 204 is connected to the battery cell body 201, and the other end extends away from the battery cell body 201. The tab 204 can connect the inside and outside of the battery cell 200. The tab 204 is the core channel for current transmission in the battery cell 200. When the battery cell 200 is charging and discharging, all the current flowing in and out passes through the tab 204. The tab 204 is responsible for collecting the current generated by the active material inside the battery cell 200 and conducting it to the external electrical device (during discharge), or introducing the current from the external charger into the battery cell 200 (during charging).

[0041] The limiting device 8 includes a positioning block 4, which is mounted on the base 1 and used to position the battery cell 200. The battery cell 200 typically has two tabs 204, a positive tab and a negative tab. The positioning block 4 includes two sets of positioning blocks 4 spaced apart, with the two tabs 204 positioned between the two sets of positioning blocks 4. The battery cell 200 can be positioned through the tabs 204, ensuring the positioning accuracy of the battery cell 200 during the edge cutting of the aluminum-plastic film sealing 203.

[0042] In this embodiment, as Figure 3 As shown, the pressing module 3 is provided with a limiting groove 33 to avoid the tab 204 and the positioning block 4, so as to prevent the pressing module 3 from damaging the tab 204 or the positioning block 4.

[0043] The overall positioning accuracy of positioning block 4 is determined based on the cutting position tolerance of aluminum-plastic film edge sealing 203, with a preferred range of 0.1-0.5mm.

[0044] In some embodiments of this utility model, the limiting device 8 further includes a CCD vision system, which is mounted on the base 1 and used to identify the position of the battery cell 200. The CCD vision system can identify the features of the battery cell 200 and provide feedback on positional deviations, making it suitable for applications requiring ultra-high precision on the edges of the aluminum-plastic film 202 of the battery cell 200.

[0045] The overall positioning accuracy of the CCD vision system is determined based on the cutting position tolerance of the 203 aluminum-plastic film edge seal, with an optimal range of 0.1-0.5mm.

[0046] In some embodiments of this utility model, the base 1 is provided with an installation groove, and part of the battery cell 200 is disposed in the installation groove. The inner wall of the installation groove can limit the battery cell 200, so that the position of the battery cell 200 on the base 1 is more reliable, and the positioning accuracy of the battery cell 200 is satisfied when the aluminum-plastic film sealing edge 203 is cut.

[0047] In some embodiments of this utility model, such as Figure 1 As shown, the battery cell aluminum-plastic film trimming device 100 also includes a drive device 5, which is mounted on the base 1 and is used to drive the pressing module 3 to move, thereby realizing the automated movement of the pressing module 3.

[0048] Furthermore, the driving device 5 is a cylinder, which drives the pressing module 3 to move toward or away from the base 1. The cylinder can provide stable and controllable linear motion for the pressing module 3. The output pressure of the cylinder is adjustable, and the working pressure is set to 0.2-0.7 MPE to ensure reliable pressing of the battery cell 200 and provide sufficient cutting force, while avoiding excessive pressure that could damage the internal structure of the battery cell 200.

[0049] In some embodiments of this utility model, such as Figure 1 As shown, the pressing module 3 can be movably engaged with or disengaged from the base 1. One of the base 1 and the pressing module 3 is provided with a limiting post 6, and the other is provided with a limiting hole 7 corresponding to the limiting post 6. When the pressing module 3 is engaged with the base 1, the limiting post 6 is located in the limiting hole 7, which can limit the movement trajectory of the pressing module 3, so that the pressing module 3 moves towards the base 1 along the set trajectory. The engagement and disengagement process of the pressing module 3 and the base 1 is relatively reliable.

[0050] In some embodiments, for the research and development and production of multiple varieties and small batches of battery cells 200, different models of battery cells 200 can be quickly adapted by replacing or adjusting a few modular components (such as positioning block 4 and blade 21), which greatly shortens the equipment debugging and downtime for model changeover.

[0051] In this embodiment, when the edge-cutting device 100 is working, the battery cell 200 is placed on the base 1, the positioning block 4 limits the tabs 204 of the battery cell 200, and the driving cylinder pushes the pressing module 3 down. The module first firmly presses the battery cell 200 onto the base 1, and then continues to move downward. The cutting groove 32 avoids the blade 21, so that the corners of the suspended aluminum-plastic film sealing edge 203 are neatly cut by the cutting edge of the blade 21.

[0052] Other configurations and operations of the battery cell aluminum-plastic film trimming device 100 according to the present invention are known to those skilled in the art and will not be described in detail here.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery cell aluminum-plastic film trimming device, characterized in that, The battery cell (200) includes a battery cell body (201) and an aluminum-plastic film edge seal (203). The battery cell aluminum-plastic film edge cutting device is used to cut the aluminum-plastic film edge seal (203) and includes: A base (1) is provided for placing the battery cell (200). A limiting device (8) is provided on the base (1) for limiting the battery cell (200). Cutting module (2), the cutting module (2) is disposed on the base (1), and when the battery cell (200) is placed on the base (1), the cutting module (2) is disposed on the underside of the aluminum-plastic film sealing edge (203); The pressing module (3) is movably engaged with or disengaged from the base (1). When the pressing module (3) is engaged with the base (1), the pressing module (3) abuts against the base (1). The pressing module (3) presses the aluminum-plastic film edge seal (203) toward the cutting module (2). The cutting module (2) is used to cut the aluminum-plastic film edge seal (203).

2. The battery cell aluminum-plastic film trimming device according to claim 1, characterized in that, The cutting module (2) includes: Blade (21), the blade (21) is disposed on the base (1), the blade (21) is disposed around the battery cell body (201), the battery cell body (201) is connected to the electrode (204), and the blade (21) is provided with a notch (22) to avoid the electrode (204).

3. The battery cell aluminum-plastic film trimming device according to claim 2, characterized in that, The pressing module (3) has a cutting groove (32) on the side facing the base (1) that cooperates with the blade (21), and a portion of the blade (21) is adapted to extend into the cutting groove (32); And / or, the thickness of the blade (21) is L, and satisfies: 0.2mm≤L≤1mm.

4. The battery cell aluminum-plastic film trimming device according to claim 2, characterized in that, The blade (21) has a cutting edge (23) at one end away from the base (1), the cutting edge (23) has a cutting bevel, the cutting bevel is adapted to be located on the side of the blade (23) away from the cell body (201), and the cutting bevel is inclined toward the cell body (201) in the direction from the base (1) to the blade (21).

5. The battery cell aluminum-plastic film trimming device according to claim 4, characterized in that, There is an angle E between the cutting bevel and the thickness direction of the blade (21), and the following condition is met: 82°≤E≤88°.

6. The battery cell aluminum-plastic film trimming device according to any one of claims 1-5, characterized in that, The battery cell (200) further includes a tab (204), one end of which is connected to the battery cell body (201), and the other end extends away from the battery cell body (201). The limiting device (8) includes: Positioning block (4), the positioning block (4) is disposed on the base (1), the positioning block (4) includes two sets of positioning blocks (4) spaced apart, and the electrode (204) is disposed between the two sets of positioning blocks (4).

7. The battery cell aluminum-plastic film trimming device according to any one of claims 1-5, characterized in that, The limiting device (8) further includes: A CCD vision system is mounted on the base (1) and is used to identify the position of the battery cell (200). And / or, the base (1) is provided with a mounting groove, and part of the battery cell (200) is disposed in the mounting groove.

8. The battery cell aluminum-plastic film trimming device according to any one of claims 1-5, characterized in that, The pressing module (3) is provided with a clearance groove (31) to avoid the battery cell body (201).

9. The battery cell aluminum-plastic film trimming device according to any one of claims 1-5, characterized in that, Also includes: A driving device (5) is provided on the base (1) and is used to drive the pressing module (3) to move.

10. The battery cell aluminum-plastic film trimming device according to claim 9, characterized in that, The drive device (5) includes a cylinder that drives the pressing module (3) to move toward or away from the base (1).

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