Lithium battery pole piece coating edge pressing device
Patent Information
- Application Number
- CN202521904061.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-09-04
AI Technical Summary
但是由于浆料流体特性易导致半月形厚边的问题，这类现象会导致涂层边缘厚度比正常区域厚几微米至十几微米，导致极片收卷时边缘鼓边，可能造成极片断裂
[0011]与现有技术相比本实用新型的有益效果为：包括底座、立架、输送部件、压紧部件、调节部件和导向部件，立架安装在底座顶端，立架下部安装有输送部件，输送部件上方安装有压紧部件，调节部件通过调节部件安装在立架顶部，调节部件与立架之间安装有导向部件。
Smart Images
Figure CN224823253U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of electrode coating processing, and in particular to a lithium battery electrode coating edge pressing device. Background Technology
[0002] Lithium-ion batteries use lithium metal or lithium alloy as the anode material and a non-aqueous electrolyte solution. They typically require uniform coating of a stable, viscous, and fluid slurry onto the positive and negative electrode current collectors. Electrode coating is crucial for the capacity, consistency, and safety of lithium-ion batteries. Existing technology publication CN218742836U discloses a lithium-ion battery electrode coating device, including a coating tank and a scraper. Supports are fixedly connected to both sides of the upper surface of the coating tank. The supports are L-shaped, and a feeding hole is fixedly connected to one end of each support. A coating tube is fixedly connected to the lower end of the feeding hole. A rotating shaft is rotatably connected to the middle of the inner walls of both ends of the coating tube. Two sets of spiral conveying blades are fixedly connected to the outer wall of the rotating shaft. The spiral conveying blades are arranged in opposite spirals. A coating nozzle is fixedly connected to the lower end of the outer wall of the coating tube, and the coating nozzles are arranged in a linear array at equal intervals. The motor output shaft drives the rotating shaft to rotate, which in turn drives two sets of opposing spiral conveyor blades to rotate. This conveys the slurry falling from the feeding hole to both sides of the coating tube, allowing it to fall through each coating nozzle and coat the lithium battery electrode. This avoids the slurry concentrating at the nozzles closest to the center of the coating tube. However, the fluid characteristics of the slurry can easily lead to a crescent-shaped thick edge. This phenomenon causes the coating edge to be several micrometers to tens of micrometers thicker than the normal area, resulting in bulging edges when the electrode is wound up, potentially causing electrode breakage. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a lithium battery electrode coating edge pressing device that ensures the uniformity of electrode coating edge thickness and improves processing quality.
[0004] This utility model discloses a lithium battery electrode coating edge pressing device, comprising a base, a frame, a conveying component, a pressing component, an adjusting component, and a guiding component. The frame is installed at the top of the base, the conveying component is installed at the bottom of the frame, the pressing component is installed above the conveying component, the adjusting component is installed at the top of the frame via an adjusting component, and a guiding component is installed between the adjusting component and the frame.
[0005] Preferably, the conveying component includes a rotating rod, a conveying roller, and two limiting plates. The rotating rod is rotatably mounted on the lower part of the upright, and the conveying roller is installed on the outer wall of the rotating rod. The input end of the rotating rod is connected to the output end of the drive motor, and the limiting plates are installed at both ends of the conveying roller. After coating, the electrode sheet moves onto the conveying roller, and the drive motor is started to drive the rotating rod to rotate, so that the conveying roller conveys the electrode sheet. The limiting plates can limit the electrode sheet to prevent deviation and enable continuous processing.
[0006] Preferably, the adjusting components include a movable plate, a connecting seat, an electric telescopic rod, and a connecting flange. The electric telescopic rod is installed at the top of the upright, and a connecting flange is installed at the bottom telescopic end of the electric telescopic rod. The connecting flange is bolted to the connecting seat, and a movable plate is bolted to the lower part of the connecting seat. The movable plate is located on the upper part of the upright. When the electric telescopic rod is activated, it moves the movable plate through the connecting seat, which can adjust the clamping position and is suitable for different processing needs, improving applicability. The bolted connection facilitates disassembly and maintenance, improving convenience.
[0007] Preferably, the pressing component includes two vertical plates and a pressing roller. The vertical plates are installed at the front and rear ends of the bottom of the moving plate, and the pressing roller is rotatably installed between the lower parts of the two vertical plates. The pressing roller is provided with pressing protrusions at the front and rear ends. The moving plate moves and drives the pressing roller downward to contact the coated electrode sheet through the vertical plates. It cooperates with the conveying roller to press the edges of both sides of the electrode sheet to ensure uniform edge thickness and improve processing quality.
[0008] Preferably, the guiding component includes two guide rods and two guide sliders. Guide grooves are provided on the upper part of the front and rear sides of the upright. The guide rods are installed in the guide grooves, and the guide sliders are installed at the front and rear ends of the moving plate. The guide sliders are slidably installed on the outer wall of the guide rods and in the guide grooves. When the moving plate moves, it drives the guide sliders to slide on the outer wall of the guide rods and in the guide grooves to limit and guide them, improve the adjustment accuracy, and ensure the stability during adjustment.
[0009] Preferably, it also includes two support rods, two cleaning grooves, two discharge pipes, two collection troughs, two vertical rods, and an output pipe. Support rods are installed at the bottom of the left side wall of the vertical plate, and cleaning grooves are installed at the top of the support rods. The cleaning grooves slide in contact with the outer wall of the pressing roller. A discharge pipe is installed at the output end of the cleaning groove. Collection troughs are installed at both the front and rear ends of the left side wall of the vertical frame. The collection troughs are located below the discharge pipes. A vertical rod is installed at the output end of the collection trough, and the output end of the vertical rod is connected to the output pipe. When the pressing roller rotates, the cleaning grooves scrape off the slurry adhering to the outer wall of the pressing roller to ensure the pressing quality. Then, the slurry is fed into the collection trough through the discharge pipe, and then collected by the vertical rod and discharged into the output pipe for easy processing.
[0010] Preferably, it also includes two guide slide rods and a rubber insulation layer. Guide slide rods are installed at both ends of the connecting seat. The guide slide rods are slidably installed on the top of the upright. The rubber insulation layer is installed on the outer wall of the conveyor roller. When the connecting seat moves, it drives the guide slide rods to slide on the upright, which limits and guides them, improves the connection strength, and ensures stability. The rubber insulation layer can increase the friction of the outer wall of the conveyor roller and prevent slippage.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: it includes a base, a stand, a conveying component, a pressing component, an adjusting component, and a guiding component. The stand is installed on the top of the base, the conveying component is installed at the bottom of the stand, the pressing component is installed above the conveying component, the adjusting component is installed on the top of the stand through the adjusting component, and the guiding component is installed between the adjusting component and the stand. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the isometric structure of this utility model; Figure 3 This is a schematic diagram of the left rear three-dimensional structure of this utility model; Figure 4 This is a schematic diagram of the upper cross-sectional structure of this utility model; Figure 5 This is a front cross-sectional structural diagram of the present invention; The following are labels in the attached diagram: 1. Base; 2. Stand; 3. Rotating rod; 4. Conveying roller; 5. Limiting plate; 6. Moving plate; 7. Connecting seat; 8. Electric telescopic rod; 9. Connecting flange; 10. Guide slide rod; 11. Vertical plate; 12. Pressure roller; 13. Guide rod; 14. Guide slider; 15. Support rod; 16. Cleaning trough; 17. Discharge pipe; 18. Collection trough; 19. Vertical rod; 20. Output pipe; 21. Rubber insulation layer. Detailed Implementation
[0013] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.
[0014] like Figures 1 to 5As shown, the upright frame 2 is installed at the top of the base 1, and the rotating rod 3 is rotatably installed at the bottom of the upright frame 2. A conveying roller 4 is installed on the outer wall of the rotating rod 3. The input end of the rotating rod 3 is connected to the output end of the drive motor. Limit plates 5 are installed at the front and rear ends of the conveying roller 4. An electric telescopic rod 8 is installed at the top of the upright frame 2. A connecting flange 9 is installed at the bottom telescopic end of the electric telescopic rod 8. A connecting seat 7 is installed on the connecting flange 9 by bolts. A movable plate 6 is installed at the bottom of the connecting seat 7 by bolts. The movable plate 6 is located on the upper part of the upright frame 2. Vertical plates 11 are installed at the front and rear ends of the bottom of the movable plate 6. A pressure roller 12 is rotatably installed between the lower parts of the two vertical plates 11. Pressure protrusions are provided at the front and rear ends of the pressure roller 12. Guide grooves are opened on the upper part of the front and rear sides of the upright frame 2. Guide rod 13 The guide slider 14 is installed in the guide groove and is installed at both ends of the moving plate 6. The guide slider 14 is slidably installed on the outer wall of the guide rod 13 and the guide groove. A support rod 15 is installed at the bottom of the left side wall of the vertical plate 11. A cleaning groove 16 is installed at the top of the support rod 15. The cleaning groove 16 is in sliding contact with the outer wall of the pressure roller 12. A discharge pipe 17 is installed at the output end of the cleaning groove 16. A collection groove 18 is installed at both ends of the left side wall of the upright frame 2. The collection groove 18 is located below the discharge pipe 17. A vertical rod 19 is installed at the output end of the collection groove 18. The output end of the vertical rod 19 is connected to the output pipe 20. A guide slide rod 10 is installed at both ends of the connecting seat 7. The guide slide rod 10 is slidably installed at the top of the upright frame 2. A rubber insulation layer 21 is installed on the outer wall of the conveying roller 4. After coating, the electrode sheet moves onto the conveyor roller 4. The drive motor is started, causing the rotating rod 3 to rotate, thus conveying the electrode sheet onto the conveyor roller 4. The limiting plate 5 limits the electrode sheet to prevent offset, allowing for continuous processing. Activating the electric telescopic rod 8, via the connecting seat 7, moves the moving plate 6, adjusting the pressing position to suit different processing needs and improving applicability. The bolted connection facilitates disassembly and maintenance, enhancing convenience. The moving plate 6, through the vertical plate 11, drives the pressing roller 12 downwards to contact the coated electrode sheet, working in conjunction with the conveyor roller 4 to press the edges of the electrode sheet, ensuring uniform edge thickness and improving processing quality. The moving plate 6 then moves... When the guide slider 14 moves, it slides on the outer wall of the guide rod 13 and in the guide groove, limiting and guiding it to improve adjustment accuracy and ensure stability during adjustment. When the pressing roller 12 rotates, the slurry adhering to the outer wall of the pressing roller 12 is scraped off by the cleaning groove 16 to ensure pressing quality. Then the slurry is fed into the collection tank 18 through the discharge pipe 17, and then collected by the vertical rod 19 and discharged into the output pipe 20 for easy processing. When the connecting seat 7 moves, it drives the guide slide rod 10 to slide on the upright 2, limiting and guiding it to improve connection strength and ensure stability. The rubber insulation layer 21 can increase the friction of the outer wall of the conveying roller 4 and prevent slippage.
[0015] like Figures 1 to 5As shown, this utility model discloses a lithium battery electrode coating edge pressing device. During operation, the coated electrode moves onto the conveying roller 4. The drive motor is activated, causing the rotating rod 3 to rotate, thus conveying the electrode onto the conveying roller 4. The limiting plate 5 limits the electrode to prevent displacement. The rubber insulating layer 21 increases the friction on the outer wall of the conveying roller 4, preventing slippage. Activating the electric telescopic rod 8 moves the moving plate 6 via the connecting seat 7, allowing adjustment of the pressing position to suit different processing needs. The bolted connection facilitates disassembly and maintenance. The movement of the moving plate 6, via the vertical plate 11, causes the pressing roller 12 to move downwards. The plate contacts the coated electrode sheet and works with the conveyor roller 4 to press the edges of the electrode sheet on both sides to ensure uniform edge thickness. When the connecting seat 7 moves, it drives the guide slide rod 10 to slide on the upright frame 2 to limit and guide it. When the moving plate 6 moves, it drives the guide slider 14 to slide on the outer wall of the guide rod 13 and in the guide groove to limit and guide it. When the pressing roller 12 rotates, the slurry adhering to the outer wall of the pressing roller 12 is scraped off by the cleaning groove 16 to ensure the pressing quality. Then the slurry is fed into the collection tank 18 through the discharge pipe 17 and then collected by the vertical rod 19 and discharged into the output pipe 20 for easy processing.
[0016] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A lithium battery electrode coating edge pressing device, characterized in that, The system includes a base (1), a stand (2), a conveying component, a clamping component, an adjusting component, and a guiding component. The stand (2) is installed on the top of the base (1). The conveying component is installed on the lower part of the stand (2). The clamping component is installed above the conveying component. The adjusting component is installed on the top of the stand (2) through the adjusting component. The guiding component is installed between the adjusting component and the stand (2). The conveying component includes a rotating rod (3), a conveying roller (4), and two limiting plates (5). The rotating rod (3) is rotatably installed on the lower part of the stand (2). The conveying roller (4) is installed on the outer wall of the rotating rod (3). The input end of the rotating rod (3) is connected to the output end of the drive motor, and the front and rear ends of the conveying roller (4) are equipped with limit plates (5); the adjustment components include a moving plate (6), a connecting seat (7), an electric telescopic rod (8) and a connecting flange (9). The electric telescopic rod (8) is installed at the top of the upright (2), and the bottom telescopic end of the electric telescopic rod (8) is equipped with a connecting flange (9). The connecting flange (9) is equipped with a connecting seat (7) by bolts. The lower part of the connecting seat (7) is equipped with a moving plate (6) by bolts. The moving plate (6) is located on the upper part of the upright (2).
2. The lithium battery electrode coating edge pressing device as described in claim 1, characterized in that, The pressing component includes two vertical plates (11) and a pressing roller (12). The vertical plates (11) are installed at the front and rear ends of the bottom of the movable plate (6). The pressing roller (12) is rotatably installed between the lower parts of the two vertical plates (11). Pressing protrusions are provided at the front and rear ends of the pressing roller (12).
3. The lithium battery electrode coating edge pressing device as described in claim 1, characterized in that, The guide component includes two guide rods (13) and two guide sliders (14). The upper part of the front and rear sides of the stand (2) is provided with guide grooves. The guide rods (13) are installed in the guide grooves. The guide sliders (14) are installed at the front and rear ends of the moving plate (6). The guide sliders (14) are slidably installed on the outer wall of the guide rods (13) and the guide grooves.
4. The lithium battery electrode coating edge pressing device as described in claim 2, characterized in that, It also includes two support rods (15), two cleaning grooves (16), two discharge pipes (17), two collection grooves (18), two vertical rods (19) and an output pipe (20). Support rods (15) are installed at the bottom of the left side wall of the vertical plate (11), and cleaning grooves (16) are installed at the top of the support rods (15). The cleaning grooves (16) slide in contact with the outer wall of the pressure roller (12). The discharge pipe (17) is installed at the output end of the cleaning grooves (16). Collection grooves (18) are installed at the front and rear ends of the left side wall of the upright frame (2). The collection grooves (18) are located below the discharge pipes (17). The vertical rods (19) are installed at the output end of the collection grooves (18). The output end of the vertical rods (19) is connected to the output pipe (20).
5. The lithium battery electrode coating edge pressing device as described in claim 1, characterized in that, It also includes two guide slides (10) and a rubber insulation layer (21). The guide slides (10) are installed at the front and rear ends of the connecting seat (7). The guide slides (10) are slidably installed on the top of the stand (2). The rubber insulation layer (21) is installed on the outer wall of the conveyor roller (4).