Lithium battery production roller press
Through the design of synchronous drive motor and cleaning strip, the problems of uneven compaction of coated electrode sheets and unstable equipment operation in lithium battery production are solved, and uniform compaction and automatic transmission of battery electrode sheets are achieved, thereby improving battery performance and production safety.
Patent Information
- Application Number
- CN202422513844.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-17
AI Technical Summary
During the production process of existing lithium batteries, the coated battery electrode sheet is unevenly compacted, which affects the battery energy density and stability. The unstable operation of the equipment may lead to the accumulation of residues, affecting product quality and workers' health.
The motor is used to drive the upper and lower rolls to rotate simultaneously to ensure uniform pressing, and scrape off residual materials through cleaning strips. The gear and plate system is used to automatically transfer the pole sheet to avoid manual contact and protect health.
It achieves uniform compaction of the battery pole sheet, improves energy density and cycle stability, prevents the accumulation of residue on the surface of the roll, and ensures product quality and worker safety.
Smart Images
Figure CN223252400U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery processing, in particular to a roller press for lithium battery production. Background Art
[0002] As a key component of modern portable energy, lithium batteries play a vital role in mobile electronic devices, electric vehicles, and energy storage systems. With the continuous advancement of technology and the growing demand for clean energy, lithium battery production technology is also constantly developing and innovating. Roller presses are an essential piece of equipment in the lithium battery manufacturing process, primarily used to compact raw materials such as positive and negative electrode materials and separators to form thin, uniform electrode sheets.
[0003] In the lithium battery manufacturing process, roller presses are primarily used to compact the coated battery pole pieces. This step is crucial for improving battery energy density, extending battery life, and ensuring battery safety. The compaction effect of the roller press effectively reduces voids and defects in the battery pole pieces, improving battery conductivity and stability. Utility Model Content
[0004] The purpose of the utility model is to provide a roller press for lithium battery production to solve the problem of compacting battery pole pieces after coating.
[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solution: a roller press for lithium battery production.
[0006] Preferably, it includes a first mounting plate, characterized in that a roller pressing body is mounted on the first mounting plate, a plurality of fixing holes are provided on the roller pressing body, a counterclockwise drive motor is mounted on the outer wall of the roller pressing body, one end of the counterclockwise drive motor is connected to the upper roller, a clockwise drive motor is mounted on the outer wall of the roller pressing body, one end of the clockwise drive motor is connected to the lower roller, a plurality of cleaning grooves are provided on the roller pressing body, two cleaning strips are installed inside the roller pressing body, one cleaning groove is mounted on the left side of the upper roller, and the other cleaning groove is mounted on the right side of the lower roller, and the two cleaning grooves are connected to a plurality of cleaning strips.
[0007] Preferably, a second mounting plate is mounted on the first mounting plate, a first gear disc is mounted on the second mounting plate, a first motor is mounted on the first gear disc, one end of the first motor is connected to a reeling wheel, a second motor is mounted on the second mounting plate, one end of the second motor is connected to a first gear, and the first gear is meshed with the first gear disc.
[0008] Preferably, a mounting bar is mounted on the second mounting plate, and two cutters are mounted on the mounting bar.
[0009] Preferably, a third mounting plate is mounted on the first mounting plate, a second gear disc is mounted on the third mounting plate, a third motor is mounted on the second gear disc, one end of the third motor is connected to a winding wheel, a fourth motor is mounted on the third mounting plate, one end of the fourth motor is connected to a second gear, and the second gear is meshed with the second gear disc.
[0010] Preferably, a first roller is mounted on the second mounting plate, and a second roller is mounted on the third mounting plate.
[0011] Preferably, a third roller is mounted on the first mounting plate, and a fourth roller is mounted on the first mounting plate.
[0012] Compared with the prior art, a lithium battery production roller press adopting the above technical solution has the following advantages:
[0013] Beneficial effects:
[0014] Before use, staff must inspect the roller press and its loading and unloading processes. They start the machine and allow it to idle. While idling, they monitor the upper rollers, motor, and other components. If the machine is functioning properly, they guide the coated electrode sheet between the upper and lower rollers before the roller press resumes operation. If the machine is not functioning properly, staff will adjust the components until it resumes operation. The coated electrode sheet is transferred to the roller press, and the counterclockwise and clockwise motors are activated, with the speeds of the two motors set to the same to ensure uniform compression of the battery material and avoid uneven compression. The upper and lower rollers rotate and compress the material, ensuring a tight bond between the active material and the current collector, improving the battery's energy density and cycling stability. This rotational compression improves the surface flatness of the electrode sheet, meeting the requirements for subsequent battery assembly. One end of the cleaning strip contacts the upper and lower rollers respectively, which can directly scrape away the residual electrode material attached to the upper and lower rollers, and then clean them out from the cleaning tank. This prevents the accumulation of residues and wear. Keeping the roller surface clean is crucial to ensure product quality.
[0015] 2. During use, the second motor starts to drive the first gear to rotate, and the first gear drives the first gear plate to rotate under the action of meshing. After the first gear plate rotates and drives the first motor to rotate outward 90 degrees, the coated pole piece roll is placed on the unwinding wheel, and the above operation is repeated, so that the first motor rotates inward 90 degrees, and the first motor starts to drive the unwinding wheel to rotate. The unwinding wheel rotates to convey the pole cloth to the roller press. The speed of the first motor is set to convey the pole piece into the roller press so that the rolling process is smooth and continuous. The machine is provided with multiple rollers, so that the pole cloth surface will not be deformed during the rolling process. The cutter on the first mounting plate can cut off excess material on the pole cloth to meet the requirements of subsequent battery assembly;
[0016] During use, the fourth motor starts and drives the second gear to rotate. The second gear drives the second gear plate to rotate under the action of meshing. After the second gear plate rotates and drives the third motor to rotate outward 90 degrees, the rolled pole pieces are concentrated on the winding wheel. The third motor starts and drives the winding wheel to rotate. The winding wheel rotates to roll up the rolled pole cloth. When the winding wheel completes collecting the pole pieces on the unwinding wheel, the above operation is repeated, so that the second motor rotates inward 90 degrees. This prevents staff from touching the pole pieces, so as to avoid contaminating the pole pieces and protect the health and safety of workers. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a perspective view of an embodiment.
[0018] Figure 2 Schematic diagram of the upper roller and lower roller of the embodiment.
[0019] Figure 3 It is a schematic diagram of the unwinding wheel of the embodiment.
[0020] Figure 4 Schematic diagram of the winding wheel of the embodiment.
[0021] In the figure: 1. First mounting plate; 2. Rolling machine body; 3. Fixing hole; 4. Counterclockwise drive motor; 5. Upper roller; 6. Clockwise drive motor; 7. Lower roller; 8. Cleaning tank; 9. Cleaning strip; 10. Second mounting plate; 11. First gear disc; 12. First motor; 13. Unwinding wheel; 14. Second motor; 15. First gear; 16. Mounting strip; 17. Cutter; 18. First roller; 19. Third mounting plate; 20. Second gear disc; 21. Third motor; 22. Rewinding wheel; 23. Fourth motor; 24. Second gear; 25. Second roller; 26. Third roller; 27. Fourth roller. DETAILED DESCRIPTION
[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0023] like Figure 1-Figure 4As shown, a roller press for lithium battery production includes a first mounting plate 1, a roller press body 2 is mounted on the first mounting plate 1, a plurality of fixing holes 3 are provided on the roller press body 2, a counterclockwise drive motor 4 is mounted on the outer wall of the roller press body 2, one end of the counterclockwise drive motor 4 is connected to an upper roller 5, a clockwise drive motor 6 is mounted on the outer wall of the roller press body 2, one end of the clockwise drive motor 6 is connected to a lower roller 7, a plurality of cleaning grooves 8 are provided on the roller press body 2, and two cleaning strips 9 are installed inside the roller press body 2, one cleaning groove 8 is mounted on the left side of the upper roller 5, and the other cleaning groove 8 is mounted on the right side of the lower roller 7, and the two cleaning grooves 8 are connected to the plurality of cleaning strips 9.
[0024] Before use, the roller press equipment must be inspected and tested for both loading and unloading. The equipment is started and allowed to idle. While idling, the staff monitors the upper rollers 5, motor, and other components. If the equipment is functioning properly, the staff guides the coated electrode sheet through the gap between the two upper rollers 5 and the lower roller 7, and the roller press then resumes operation. If the equipment is not functioning properly, the staff adjusts the components until it functions properly. The coated electrode sheet is transferred to the roller press body 2, and the counterclockwise and clockwise motors 4 and 6 are activated. The speeds of the counterclockwise and clockwise motors 4 and 6 are set to the same to ensure uniform compression of the battery material and avoid uneven compression. The upper and lower rollers 5 and 7 are driven to rotate and compress the material, ensuring a tight bond between the active material and the current collector, improving the battery's energy density and cycling stability. Simultaneously, the rotation of the upper and lower rollers 5 and 7 improves the surface flatness of the electrode sheet, meeting the requirements for subsequent battery assembly. One end of the cleaning strip 9 contacts the upper roller 5 and the lower roller 7 respectively, and can directly scrape off the residual electrode material attached to the upper roller 5 and the lower roller 7, and then clean it out from the cleaning tank 8. To prevent the accumulation of residues and wear, keeping the roller surface clean is crucial to ensure product quality.
[0025] like Figure 1-Figure 4 As shown, a second mounting plate 10 is mounted on the first mounting plate 1, a first toothed disc 11 is mounted on the second mounting plate 10, a first motor 12 is mounted on the first toothed disc 11, one end of the first motor 12 is connected to a reeling wheel 13, a second motor 14 is mounted on the second mounting plate 10, one end of the second motor 14 is connected to a first gear 15, the first gear 15 is engaged with the first toothed disc 11, a mounting bar 16 is mounted on the second mounting plate 10, two cutters 17 are mounted on the mounting bar 16, a first roller 18 is mounted on the second mounting plate 10, a second roller 25 is mounted on the third mounting plate 19, a third roller 26 is mounted on the first mounting plate 1, and a fourth roller 27 is mounted on the first mounting plate 1.
[0026] During use, the second motor 14 starts to drive the first gear 15 to rotate, and the first gear 15 drives the first toothed disc 11 to rotate under the action of meshing. After the first toothed disc 11 rotates and drives the first motor 12 to rotate outward 90 degrees, the coated electrode roll is placed on the unwinding wheel 13, and the above operation is repeated, so that the first motor 12 rotates inward 90 degrees, and the first motor 12 starts to drive the unwinding wheel 13 to rotate. The unwinding wheel 13 rotates to convey the electrode cloth to the roller press. The speed setting of the first motor 12 conveys the electrode cloth into the roller press so that the rolling process is smooth and continuous. The machine is provided with multiple rollers, so that the surface of the electrode cloth will not be deformed during the rolling process. The cutter 17 on the first mounting plate 1 can cut off excess material on the electrode cloth to meet the requirements of subsequent battery assembly.
[0027] like Figure 1-Figure 4 As shown, a third mounting plate 19 is mounted on the first mounting plate 1, a second gear disc 20 is mounted on the third mounting plate 19, a third motor 21 is mounted on the second gear disc 20, one end of the third motor 21 is connected to a winding wheel 22, a fourth motor 23 is mounted on the third mounting plate 19, one end of the fourth motor 23 is connected to a fourth gear 24, and the fourth gear 24 is meshed with the second gear disc 20.
[0028] During use, the fourth motor 23 starts and drives the second gear 24 to rotate. The second gear 24 drives the second gear disc 20 to rotate under the action of meshing. After the second gear disc 20 rotates and drives the third motor 21 to rotate outward 90 degrees, the rolled pole pieces are concentrated on the winding wheel 22. The third motor 21 starts and drives the winding wheel 22 to rotate. The winding wheel 22 rotates to roll up the rolled pole cloth. When the winding wheel 22 completes collecting the pole pieces on the unwinding wheel 13, the above operation is repeated, so that the second motor 14 rotates inward 90 degrees. This prevents staff from contacting the pole pieces to avoid contaminating the pole pieces and protects the health and safety of workers.
[0029] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.
Claims
1. A roller press for producing lithium batteries, comprising a first mounting plate (1), characterized in that: A roller press body (2) is mounted on the first mounting plate (1), a plurality of fixing holes (3) are provided on the roller press body (2), a counterclockwise drive motor (4) is mounted on the outer wall of the roller press body (2), one end of the counterclockwise drive motor (4) is connected to an upper roller (5), a clockwise drive motor (6) is mounted on the outer wall of the roller press body (2), one end of the clockwise drive motor (6) is connected to a lower roller (7), a plurality of cleaning grooves (8) are provided on the roller press body (2), two cleaning bars (9) are mounted inside the roller press body (2), one of the cleaning grooves (8) is mounted on the left side of the upper roller (5), and the other of the cleaning grooves (8) is mounted on the right side of the lower roller (7), and the two cleaning grooves (8) are connected to the plurality of cleaning bars (9).
2. A lithium battery production roller press according to claim 1, characterized in that: A second mounting plate (10) is mounted on the first mounting plate (1), a first toothed disc (11) is mounted on the second mounting plate (10), a first motor (12) is mounted on the first toothed disc (11), one end of the first motor (12) is connected to a reeling wheel (13), a second motor (14) is mounted on the second mounting plate (10), one end of the second motor (14) is connected to a first gear (15), and the first gear (15) is meshed with the first toothed disc (11).
3. A lithium battery production roller press according to claim 1, characterized in that: A mounting bar (16) is mounted on the second mounting plate (10), and two cutters (17) are mounted on the mounting bar (16).
4. A lithium battery production roller press according to claim 1, characterized in that: A third mounting plate (19) is mounted on the first mounting plate (1), a second toothed disc (20) is mounted on the third mounting plate (19), a third motor (21) is mounted on the second toothed disc (20), one end of the third motor (21) is connected to a winding wheel (22), a fourth motor (23) is mounted on the third mounting plate (19), one end of the fourth motor (23) is connected to a second gear (24), and the second gear (24) is meshed with the second toothed disc (20).
5. The lithium battery production roller press according to claim 1, characterized in that: A first roller (18) is mounted on the second mounting plate (10), and a second roller (25) is mounted on the third mounting plate (19).
6. A lithium battery production roller press according to claim 1, characterized in that: A third roller (26) is mounted on the first mounting plate (1), and a fourth roller (27) is mounted on the first mounting plate (1).