Battery slit coating device

Abstract

The utility model relates to the field of battery production discloses a kind of battery slit formula coating device, including winding module, the winding module is fixed in the top surface of workbench, the top surface of workbench is fixed with mounting bracket, the top surface of workbench is fixed with placement table, the inner wall of mounting bracket is slidably provided with coating die head, the coating die head corresponds with placement table, the bottom of coating die head is fixed with two mounting plate, the bottom of mounting plate is fixed with elastic lip piece.In the utility model, through the cooperation of elastic lip piece and limiting block, the coating at the edge of battery pole piece can be adjusted, so that the gap between elastic lip piece and limiting block and current collector can be adjusted according to the coating pressure and flow state at the edge of battery pole piece, thereby the coating flow at the edge is compensated and adjusted in real time, so that the thickness of coating edge and middle part remains consistent, thereby effectively improving the edge effect, and thereby improving the uniformity of coating thickness.

Description

Technical Field

[0001] This utility model relates to the technical field of battery production, specifically to a battery slit coating device. Background Technology

[0002] Slit coating is a coating method used in battery production to uniformly coat electrode materials onto the surface of current collectors (such as copper foil, aluminum foil, etc.). Through special design and working principle, it can precisely control parameters such as coating thickness, uniformity, and width, thereby ensuring the quality and performance of battery electrodes.

[0003] Chinese Patent No. CN219880419U discloses a slit-type coating test device for lithium battery electrodes. Addressing the problem in existing technologies where marking defective areas during testing is inconvenient, hindering subsequent precise machine adjustments, the following solution is proposed: The device includes a display device, two sets of positioning devices, a scanner, and multiple thickness gauges. A heating roller is mounted on the top of the display device, and two sets of support frames located on one side of the heating roller are fixedly connected to the top of the display device. The positioning devices are fixedly connected to each set of support frames.

[0004] In the above solution, the marking pen is lowered by the pressure plate to mark the defective areas, making it easier to adjust the defective areas. However, it has the following disadvantages: when coating the battery electrode, this device cannot effectively adjust the coating at the edge of the battery electrode, which makes it easy for the coating in the middle and edge of the battery electrode to be uneven, thereby reducing the consistency of the battery electrode coating and thus reducing the effectiveness of the coating device. Utility Model Content

[0005] The purpose of this invention is to provide a slit-type coating device for batteries, which solves the problem that when the device coats battery electrodes, it cannot effectively adjust the coating at the edges of the battery electrodes, resulting in uneven coating between the center and the edges of the battery electrodes, thus reducing the consistency of the battery electrode coating.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a battery slit coating device, comprising a winding module, the winding module being fixed to the top surface of a workbench, a mounting frame being fixed to the top surface of the workbench, a placement platform being fixed to the top surface of the workbench, a coating die being slidably disposed on the inner wall of the mounting frame, the coating die being corresponding to the placement platform, two mounting plates being fixed to the bottom surface of the coating die, an elastic lip being fixed to the bottom surface of the mounting plate, a limiting hole being opened on the top surface of the mounting plate, a limiting block being disposed on the bottom surface of the mounting plate, an anti-stick coating being coated on the left side of the limiting block, the right side of the elastic lip being in contact with the anti-stick coating, a limiting post being fixed to the top surface of the limiting block, the limiting post being slidably connected to the limiting hole, a spring being wound around the outer wall of the limiting post, one end of the spring being fixed to the inner wall of the limiting hole, the other end of the spring being fixed to the outer wall of the limiting post, and a discharge port being opened on the right side of the limiting block.

[0007] Preferably, a guide frame is fixed on the right side of the limiting block, the guide frame corresponds to the discharge port, and two collection slots are opened on the top surface of the workbench, the guide frame corresponds to the collection slots.

[0008] Preferably, the top surface of the worktable is rotatably provided with a plurality of transmission rollers, and a limit frame is fixed on the top surface of the worktable. The upper and lower surfaces of the limit frame are rotatably provided with a plurality of limit rollers.

[0009] Preferably, a rubber strip is fixed to the inner wall of the limiting frame.

[0010] Preferably, a dust cover is fixed to the top surface of the workbench, and an installation hole is provided on the top surface of the dust cover. A drying module is fixed to the inner wall of the installation hole.

[0011] Preferably, the dust cover has fixing holes on both the left and right sides, and a transparent panel is fixed to the inner wall of the fixing holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] First, the combination of the elastic lip and the limiting block allows for adjustment of the coating at the edge of the battery electrode. The gap between the elastic lip and the limiting block and the current collector can be adjusted according to the coating pressure and flow state at the edge, thus providing real-time compensation and adjustment of the coating flow rate at the edge. This ensures the coating thickness at the edge is consistent with the central portion, effectively improving edge effects and enhancing coating thickness uniformity. Furthermore, adjusting the coating flow rate at the edge using the elastic lip and limiting block results in a more uniform coating thickness on the battery electrode, guaranteeing consistent electrochemical performance during charging and discharging, and improving overall battery quality and lifespan. Second, the combination of the guide frame and the collection tank allows for the guidance and collection of excess coating discharged from the outlet. This enables centralized processing of the collected coating, facilitating its reuse, reducing resource waste, and improving resource utilization efficiency.

[0014] Second, the cooperation of the drive roller and the limiting roller can limit the position of the coated battery electrode sheets, preventing them from shifting or swaying during transport. This ensures that the battery electrode sheets remain within the predetermined position range during transport and coating, facilitating stable collection by the winding module and guaranteeing the flatness of the collected battery electrode sheets. Rubber strips protect the battery electrode sheets during transport, effectively preventing damage caused by direct collision and friction between the battery electrode sheets and the inner wall of the limiting frame. This effectively improves the integrity of the battery electrode sheets and thus enhances the product quality.

[0015] Third, the drying module enables the battery electrodes to dry in a short time, allowing the organic solvents in the electrode slurry to evaporate rapidly. This results in an electrode coating with good adhesion and conductivity, thus ensuring the performance of the battery electrodes. The transparent panel allows staff to directly observe the drying process of the coated battery electrodes, facilitating timely detection and adjustments to ensure coating quality and production continuity. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the utility model.

[0017] Figure 2 This is an exploded schematic diagram of a utility model.

[0018] Figure 3 This is an exploded schematic diagram of the dust cover in the utility model.

[0019] Figure 4 For utility model Figure 2 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Rewinding module; 2. Workbench; 3. Mounting frame; 4. Placement platform; 5. Coating die head; 6. Mounting plate; 7. Elastic lip; 8. Limiting hole; 9. Limiting block; 10. Limiting post; 11. Spring; 12. Discharge port; 13. Guide frame; 14. Collection trough; 15. Drive roller; 16. Limiting frame; 17. Limiting roller; 18. Rubber strip; 19. Dust cover; 20. Mounting hole; 21. Drying module; 22. Fixing hole; 23. Transparent panel. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, a battery slot coating device includes a winding module 1, which is fixed to the top surface of a workbench 2. A mounting frame 3 and a placement platform 4 are fixed to the top surface of the workbench 2. A coating die 5 is slidably mounted on the inner wall of the mounting frame 3, corresponding to the placement platform 4. Two mounting plates 6 are fixed to the bottom surface of the coating die 5, and elastic lips 7 are fixed to the bottom surface of the mounting plates 6. Limiting holes 8 are formed on the top surface of the mounting plates 6, and limiting blocks 9 are provided on the bottom surface of the mounting plates 6. An anti-stick coating is applied to the left side of the limiting blocks 9, and the right side of the elastic lips 7... In contact with the anti-stick coating, the top surface of the limiting block 9 is fixed with a limiting post 10, which is slidably connected to the limiting hole 8. A spring 11 is wound around the outer wall of the limiting post 10. One end of the spring 11 is fixed to the inner wall of the limiting hole 8, and the other end of the spring 11 is fixed to the outer wall of the limiting post 10. A discharge port 12 is provided on the right side of the limiting block 9. The elastic lip 7 is made of rubber or silicone. A guide frame 13 is fixed on the right side of the limiting block 9. The guide frame 13 corresponds to the discharge port 12. Two collection grooves 14 are provided on the top surface of the workbench 2. The guide frame 13 corresponds to the collection grooves 14.

[0023] During use, the elastic lip 7 and the limiting block 9 work together to adjust the coating at the edge of the battery electrode. The elastic lip 7 and the limiting block 9 adjust the gap between themselves and the current collector according to the coating pressure and flow state at the edge of the battery electrode, thereby providing real-time compensation and adjustment of the coating flow rate at the edge. This ensures that the coating thickness at the edge is consistent with the central part, effectively improving the edge effect and thus enhancing the uniformity of the coating thickness. Simultaneously, adjusting the coating flow rate at the edge using the elastic lip 7 and the limiting block 9 makes the coating thickness on the battery electrode more uniform, ensuring consistent electrochemical performance during charging and discharging, and improving the overall quality and lifespan of the battery. The guide frame 13 and the collection tank 14 work together to guide and collect excess coating discharged from the outlet 12, allowing for centralized processing and reuse of the collected coating, thus reducing resource waste and improving resource utilization efficiency.

[0024] like Figure 1 and Figure 2 As shown, the top surface of the workbench 2 is rotatably equipped with several transmission rollers 15, and the top surface of the workbench 2 is fixed with a limit frame 16. The top and bottom surfaces of the limit frame 16 are rotatably equipped with several limit rollers 17, and the inner wall of the limit frame 16 is fixed with a rubber strip 18.

[0025] In use, the transmission roller 15 and the limiting roller 17 work together to limit the position of the coated battery electrode sheets, preventing them from shifting or swaying during transport. This ensures that the battery electrode sheets remain within a predetermined position range during transport and coating, facilitating stable collection of the battery electrode sheets by the winding module 1 and guaranteeing the flatness of the collected sheets. The rubber strip 18 protects the battery electrode sheets during transport, effectively preventing damage caused by direct collision and friction between the battery electrode sheets and the inner wall of the limiting frame 16. This effectively improves the integrity of the battery electrode sheets and thus enhances the product quality.

[0026] like Figures 1-3 As shown, a dust cover 19 is fixed on the top surface of the workbench 2. An installation hole 20 is opened on the top surface of the dust cover 19. A drying module 21 is fixed on the inner wall of the installation hole 20. Fixing holes 22 are opened on both the left and right sides of the dust cover 19. A transparent panel 23 is fixed on the inner wall of the fixing hole 22.

[0027] During use, the drying module 21 enables the battery electrodes to dry in a short time, allowing the organic solvents in the electrode slurry to evaporate rapidly. This results in the formation of an electrode coating with good adhesion and conductivity, thus ensuring the performance of the battery electrodes. The transparent panel 23 allows staff to directly observe the drying process of the coated battery electrodes, facilitating timely detection and adjustments to ensure coating quality and production continuity.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A battery slot coating device comprising a winding module (1) fixed to the top surface of a workbench (2), characterized in that, A mounting bracket (3) is fixed to the top surface of the workbench (2), and a placement platform (4) is fixed to the top surface of the workbench (2). A coating die (5) is slidably disposed on the inner wall of the mounting bracket (3). The coating die (5) corresponds to the placement platform (4). Two mounting plates (6) are fixed to the bottom surface of the coating die (5). An elastic lip (7) is fixed to the bottom surface of the mounting plate (6). A limit hole (8) is opened on the top surface of the mounting plate (6), and a limit block (9) is provided on the bottom surface of the mounting plate (6). The left side of the limiting block (9) is coated with an anti-stick coating, and the right side of the elastic lip (7) is in contact with the anti-stick coating. The top surface of the limiting block (9) is fixed with a limiting post (10). The limiting post (10) is slidably connected to the limiting hole (8). A spring (11) is wound around the outer wall of the limiting post (10). One end of the spring (11) is fixed to the inner wall of the limiting hole (8), and the other end of the spring (11) is fixed to the outer wall of the limiting post (10). A discharge port (12) is opened on the right side of the limiting block (9).

2. The battery slot-coating device according to claim 1, wherein: A flow guide frame (13) is fixed on the right side of the limiting block (9). The flow guide frame (13) corresponds to the discharge port (12). Two collection troughs (14) are opened on the top surface of the workbench (2). The flow guide frame (13) corresponds to the collection troughs (14).

3. The battery slit coating apparatus according to claim 1, characterized in that: The top surface of the workbench (2) is rotatably provided with a number of transmission rollers (15), and the top surface of the workbench (2) is fixed with a limit frame (16). The top and bottom surfaces of the limit frame (16) are rotatably provided with a number of limit rollers (17).

4. The battery slit coating apparatus according to claim 3, characterized in that: A rubber strip (18) is fixed to the inner wall of the limiting frame (16).

5. The battery slit coating apparatus according to claim 3, characterized in that: The top surface of the workbench (2) is fixed with a dust cover (19), and the top surface of the dust cover (19) is provided with an installation hole (20). The inner wall of the installation hole (20) is fixed with a drying module (21).

6. The battery slit coating apparatus according to claim 5, characterized in that: The dust cover (19) has fixing holes (22) on both the left and right sides, and a transparent panel (23) is fixed to the inner wall of the fixing hole (22).

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