Rolling device for processing lithium ion battery pole piece

Abstract

The utility model discloses a rolling device for processing a lithium ion battery pole piece. The rolling device comprises a working plane main body, a first working plane and a second working plane are mounted on the working plane main body, a sliding rail is mounted on the working plane main body, the second working plane is mounted on the sliding rail, and compression roller mounting plates are mounted on the two sides of the first working plane and the two sides of the second working plane; according to the utility model, the first motor drives the first compression roller to rotate through the first rotating shaft, the first rotating shaft drives the second gear to rotate through the first gear, the second gear drives the second compression roller to rotate through the second rotating shaft, the first compression roller and the second compression roller rotate in opposite directions, and a pole piece is fed from one side of the first compression roller and one side of the second compression roller and discharged from the other side. The rolling function is achieved, the rolling devices are arranged on the first working plane and the second working plane correspondingly, the second working plane is moved through the sliding rail, the single-time rolling mode and the secondary rolling mode can be freely combined, and the rolling device is suitable for different use scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium - ion battery pole piece processing, in particular to a rolling device for lithium - ion battery pole piece processing. Background Technique

[0002] After retrieval, a rolling device for lithium - ion battery pole piece processing with the publication number of CN221388220U includes basic components. The basic components include a bottom plate. On both sides of the top of the bottom plate, vertical plates are fixedly connected. On the upper and lower sides of the right end of the left vertical plate, driving shafts are rotatably connected. On the outer walls of the driving shafts, an upper pressure roller and a lower pressure roller are respectively fixedly connected. On the upper and lower sides of the right end of the right vertical plate, motors are fixedly connected. The driving ends of the motors are fixedly connected to the right ends of the driving shafts. Behind the inner side of the vertical plate, a straightening component is arranged. The straightening component includes a support plate, and at the top of one end of the inner side of the support plate, a second straightening plate is fixedly connected. The rolling device for lithium - ion battery pole piece processing described in this utility model can straighten the battery pole piece during processing to prevent the battery pole piece from bending after rolling. This device can ensure that the quality of the produced battery pole pieces is consistent, thereby improving the reliability of the quality of subsequent produced products.

[0003] The above - mentioned device can only achieve single - time rolling. Due to different raw materials of the battery negative pole piece, its rolling rebound is relatively large, and secondary rolling is often required. This device cannot meet the requirements of secondary rolling, has a narrow scope of application, and there is no tensioning device. After extrusion, the pole piece will extend and stretch. Without a tensioning device, the pole piece will be too loose and wrinkles will appear on the surface, and it is easy to cause the pole piece to wrinkle during winding. Therefore, a rolling device for lithium - ion battery pole piece processing is needed to meet people's needs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a rolling device for lithium - ion battery pole piece processing to solve the problems raised in the above - mentioned background technique.

[0005] To achieve the above - mentioned purpose, the utility model provides the following technical solution: A rolling device for lithium - ion battery pole piece processing includes a working plane main body; a first working plane and a second working plane are installed on the working plane main body, a slide rail is installed on the working plane main body, and the second working plane is installed on the slide rail;

[0006] Preferably, on both sides of the first working plane and the second working plane, pressure roller mounting plates are installed. Between the two pressure roller mounting plates, a first pressure roller is installed. Above the first pressure roller, a second pressure roller is installed. On one side of the first pressure roller, a first scraper is installed. On one side of the second pressure roller, a second scraper is installed. On both sides of the first working plane and the second working plane, second motors are installed. Between the two second motors, a support roller is installed.

[0007] Preferably, a first motor is installed on one side of the pressure roller mounting plate, a first rotating shaft is installed on the first motor, and the first pressure roller is installed on the first rotating shaft.

[0008] Preferably, a first gear is installed on the side of the first rotating shaft away from the first motor, the first gear is installed on one side of the pressure roller mounting plate, a second gear is installed on the first gear, and the first gear meshes with the second gear.

[0009] Preferably, a second rotating shaft is installed on the second gear, and the second pressure roller is installed on the second rotating shaft.

[0010] Preferably, a connecting pipe is installed on one side of the first scraper and the second scraper, the connecting pipe is installed on one side of the pressure roller mounting plate, and a negative pressure fan is installed below the connecting pipe.

[0011] Preferably, a collection box is installed in the negative pressure fan, and filter cotton is installed in the collection box.

[0012] Preferably, a motor screw rod is installed on the second motor, a moving block is installed on the motor screw rod, a mounting block is installed in the moving block, a third rotating shaft is installed between the mounting blocks, and the support roller is installed on the third rotating shaft.

[0013] Preferably, a spring is installed in the moving block, and the spring is installed below the mounting block.

[0014] Preferably, a sliding groove is formed at the bottom of the second working plane, the sliding rail is installed in the sliding groove, a limiting groove is formed on one side of the first working plane, a limiting block is installed on one side of the second working plane, and the limiting block is installed in the limiting groove.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] (1) In the present utility model, the first motor drives the first pressure roller to rotate through the first rotating shaft, the first rotating shaft drives the second gear to rotate through the first gear, the second gear drives the second pressure roller to rotate through the second rotating shaft, the rotation directions of the first pressure roller and the second pressure roller are opposite, the pole piece is fed between one side of the first pressure roller and the second pressure roller and sent out from the other side, so as to realize the function of roller pressing. By respectively arranging the roller pressing device on the first working plane and the second working plane, and moving the second working plane through the sliding rail, the two modes of single-time roller pressing and double-time roller pressing can be freely combined to adapt to different usage scenarios.

[0017] (2) When the first pressing roller and the second pressing roller rotate, the bottoms of the first scraping plate and the second scraping plate are in contact with the surfaces of the first pressing roller and the second pressing roller, and can scrape off the impurities on the first pressing roller and the second pressing roller. The impurities fall into the first scraping plate and the second scraping plate, and through the negative pressure suction generated by the negative pressure fan, the impurities can be sucked into the collection box through the connecting pipe.

[0018] (3) By driving the motor lead screw to rotate by the second motor, when the motor lead screw rotates, the moving block moves up and down on the motor lead screw. When the moving block moves, it drives the supporting rod to move. By moving the supporting rod under the pole piece, when installing, press down the supporting rod and tighten the pole piece. When the pole piece is loose during work, under the action of the spring, the supporting rod will always hold against the pole piece to make the pole piece taut, avoiding wrinkles when the pole piece is too loose during winding. Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of a roll pressing device for processing lithium-ion battery pole pieces proposed by the present utility model;

[0020] Figure 2 is a structural schematic diagram of the first pressing roller, the second pressing roller and other structures of a roll pressing device for processing lithium-ion battery pole pieces proposed by the present utility model;

[0021] Figure 3 is a structural schematic diagram of the first gear, the second gear and other structures of a roll pressing device for processing lithium-ion battery pole pieces proposed by the present utility model;

[0022] Figure 4 is a structural schematic diagram of the connecting pipe, the negative pressure fan and other structures of a roll pressing device for processing lithium-ion battery pole pieces proposed by the present utility model;

[0023] Figure 5 is a structural schematic diagram of the second pressing roller, the second scraping plate and other structures of a roll pressing device for processing lithium-ion battery pole pieces proposed by the present utility model;

[0024] Figure 6 is a structural schematic diagram of the supporting rod, the second motor and other structures of a roll pressing device for processing lithium-ion battery pole pieces proposed by the present utility model;

[0025] Figure 7 is a structural schematic diagram of the spring, the mounting block and other structures of a roll pressing device for processing lithium-ion battery pole pieces proposed by the present utility model;

[0026] Figure 8 is a structural schematic diagram of the first working plane and the second working plane of a roll pressing device for processing lithium-ion battery pole pieces proposed by the present utility model.

[0027] In the figure: 1. Working plane main body; 2. First working plane; 3. Limit groove; 4. Second working plane; 5. Slide groove; 6. Limit block; 7. Slide rail; 8. Press roller mounting plate; 9. First motor; 10. First rotating shaft; 11. First press roller; 12. First gear; 13. Second gear; 14. Second rotating shaft; 15. Second press roller; 16. First scraper; 17. Second scraper; 18. Connecting pipe; 19. Negative pressure fan; 20. Collection box; 21. Filter cotton; 22. Second motor; 23. Motor lead screw; 24. Moving block; 25. Mounting block; 26. Third rotating shaft; 27. Support rod; 28. Spring. Detailed implementation mode

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0029] Embodiment 1: Please refer to Figure 1-8 , the present invention provides a technical solution: A roll pressing device for processing lithium-ion battery electrode sheets, including a working plane main body 1; In order to expand the applicability of the equipment and prevent the electrode sheets from loosening during roll pressing, a first working plane 2 and a second working plane 4 are installed on the working plane main body 1, a slide rail 7 is installed on the working plane main body 1, the second working plane 4 is installed on the slide rail 7, a roll pressing and tensioning device is installed through the first working plane 2 and the second working plane 4, and the second working plane 4 is moved through the slide rail 7 to combine different working forms;

[0030] In order to achieve the function of rolling the pole piece, press roller mounting plates 8 are installed on both sides of the first working plane 2 and the second working plane 4. A first press roller 11 is installed between the two press roller mounting plates 8. A second press roller 15 is installed above the first press roller 11. A first scraper 16 is installed on one side of the first press roller 11. A second scraper 17 is installed on one side of the second press roller 15. Second motors 22 are installed on both sides of the first working plane 2 and the second working plane 4. A support roller 27 is installed between the two second motors 22. A first motor 9 is installed on one side of the press roller mounting plate 8. A first rotating shaft 10 is installed on the first motor 9. The first press roller 11 is installed on the first rotating shaft 10. A first gear 12 is installed on the side of the first rotating shaft 10 away from the first motor 9. The first gear 12 is installed on one side of the press roller mounting plate 8. A second gear 13 is installed on the first gear 12. The first gear 12 meshes with the second gear 13. A second rotating shaft 14 is installed on the second gear 13. The second press roller 15 is installed on the second rotating shaft 14. A chute 5 is opened at the bottom of the second working plane 4. A slide rail 7 is installed in the chute 5. A limit groove 3 is opened on one side of the first working plane 2. A limit block 6 is installed on one side of the second working plane 4. The limit block 6 is installed in the limit groove 3. When rolling the positive pole piece, push the second working plane 4. The second working plane 4 slides on the slide rail 7, so that the second working plane 4 and the first working plane 2 are staggered. When moving, the limit block 6 slides in the limit groove 3, which can limit the first working plane 2 and the limit groove 3 to prevent the second working plane 4 from disengaging from the working plane main body 1. At this time, the rolling devices on the first working plane 2 and the second working plane 4 can work separately at the same time. The pole piece is passed through between the first press roller 11 and the second press roller 15, and after passing through the support roller 27, it is wound into an external winding device. When working, the first motor 9 drives the first press roller 11 to rotate through the first rotating shaft 10. The first rotating shaft 10 drives the second gear 13 to rotate through the first gear 12. The second gear 13 drives the second press roller 15 to rotate through the second rotating shaft 14. The first press roller 11 and the second press roller 15 rotate in opposite directions, which can feed the pole piece from between one side of the first press roller 11 and the second press roller 15 and send it out from the other side to achieve the rolling function. When it is necessary to roll the negative pole piece or perform secondary rolling, reset the second working plane 4 so that the second working plane 4 and the first working plane 2 are in a straight line. The pole piece is passed through between the press rollers in pairs once and then wound into an external winding device. Just start the two first motors 9 at the same time. By arranging the rolling devices on the first working plane 2 and the second working plane 4 respectively and moving the second working plane 4 through the slide rail 7, the two modes of single rolling and secondary rolling can be freely combined to adapt to different usage scenarios.

[0031] Embodiment 2: As Figure 1-5, in order to remove the residual impurities and particles on the pressure roller during rolling, a same connecting pipe 18 is installed on one side of the first scraper 16 and the second scraper 17. The connecting pipe 18 is installed on one side of the pressure roller mounting plate 8. A negative pressure fan 19 is installed below the connecting pipe 18. A collecting box 20 is installed inside the negative pressure fan 19, and a filter cotton 21 is installed inside the collecting box 20. In order to remove impurities, when the first pressure roller 11 and the second pressure roller 15 rotate, one side of the bottom of the first scraper 16 and the second scraper 17 fits the surfaces of the first pressure roller 11 and the second pressure roller 15. For example, in the figure, the first motor 9 drives the first pressure roller 11 to rotate counterclockwise. The first scraper 16 is installed on the left side of the first pressure roller 11. When the first pressure roller 11 rotates to the left, the impurities will not first contact the upper end surface of the first scraper 16, but contact the lower surface of the first scraper 16, and are scraped off by the lower end surface of the first scraper 16 and fall into the first scraper 16. The function of the second scraper 17 above is the same. Through the negative pressure suction generated by the negative pressure fan 19, the impurities can be sucked into the negative pressure fan 19 through the connecting pipe 18, and the impurities will be blocked by the filter cotton 21 and remain in the collecting box 20. The other features are the same as those in Embodiment 1.

[0032] Embodiment 3: As Figure 1 and Figure 6-7 , in order to prevent the pole piece from becoming loose and extended after rolling, a motor lead screw 23 is installed on the second motor 22. A moving block 24 is installed on the motor lead screw 23. An installation block 25 is installed inside the moving block 24. A third rotating shaft 26 is installed between the installation blocks 25. A support roller 27 is installed on the third rotating shaft 26. A spring 28 is installed inside the moving block 24, and the spring 28 is installed below the installation block 25. By driving the motor lead screw 23 to rotate by the second motor 22, when the motor lead screw 23 rotates, the moving block 24 moves up and down on the motor lead screw 23. When the moving block 24 moves, it drives the support roller 27 to move. By moving the support roller 27 under the pole piece, when installing, the support roller 27 is pressed down to tighten the pole piece. When the pole piece becomes loose during operation, under the action of the spring 28, the support roller 27 will always hold against the pole piece to make the pole piece taut, avoiding wrinkles when the pole piece is too loose during winding. The other features are the same as those in Embodiment 1.

[0033] The working principle is as follows: When rolling the positive electrode sheet, the second working plane 4 is pushed, and the second working plane 4 slides on the slide rail 7, causing the second working plane 4 to be offset from the first working plane 2. During the movement, the limit block 6 slides in the limit groove 3, which can limit the first working plane 2 and the limit groove 3 to prevent the second working plane 4 from disengaging from the working plane body 1. At this time, the rolling devices on the first working plane 2 and the second working plane 4 can work separately at the same time. The electrode sheet passes through between the first pressing roller 11 and the second pressing roller 15, and after passing through the supporting roller 27, it is wound into an external winding device. When working, the first motor 9 drives the first pressing roller 11 to rotate through the first rotating shaft 10. The first rotating shaft 10 drives the second gear 13 to rotate through the first gear 12. The second gear 13 drives the second pressing roller 15 to rotate through the second rotating shaft 14. The first pressing roller 11 and the second pressing roller 15 rotate in opposite directions, which can feed the electrode sheet from one side between the first pressing roller 11 and the second pressing roller 15 and send it out from the other side to achieve the rolling function. When it is necessary to roll the negative electrode sheet or perform secondary rolling, the second working plane 4 is reset so that the second working plane 4 and the first working plane 2 are in a straight line. The electrode sheet is passed through between the pairwise combined pressing rollers once and then wound into an external winding device, and two first motors 9 are started at the same time. By separately arranging the rolling devices on the first working plane 2 and the second working plane 4 and moving the second working plane 4 through the slide rail 7, the two modes of single rolling and secondary rolling can be freely combined to adapt to different usage scenarios. When rolling, impurities and particles will remain on the pressing rollers. In order to remove the impurities, when the first pressing roller 11 and the second pressing roller 15 rotate, the bottom sides of the first scraping plate 16 and the second scraping plate 17 are attached to the surfaces of the first pressing roller 11 and the second pressing roller 15. For example, in the figure, the first motor 9 drives the first pressing roller 11 to rotate counterclockwise. The first scraping plate 16 is installed on the left side of the first pressing roller 11. When the first pressing roller 11 rotates to the left, the impurities will not first contact the upper end surface of the first scraping plate 16, but contact the lower surface of the first scraping plate 16 and are scraped off by the lower end surface of the first scraping plate 16 and fall into the first scraping plate 16. The function of the upper second scraping plate 17 is the same. Through the negative pressure fan 19 to generate negative pressure suction, the impurities can be sucked into the negative pressure fan 19 through the connecting pipe 18, and the impurities will be blocked by the filter cotton 21 and remain in the collection box 20. In order to prevent the rolled electrode sheet from stretching and becoming loose, the second motor 22 drives the motor lead screw 23 to rotate. When the motor lead screw 23 rotates, the moving block 24 moves up and down on the motor lead screw 23. When the moving block 24 moves, it drives the supporting roller 27 to move. By moving the supporting roller 27 under the electrode sheet and pressing down the supporting roller 27 during installation, the electrode sheet is tightened. When the electrode sheet becomes loose during work, under the action of the spring 28, the supporting roller 27 will always press against the electrode sheet to keep the electrode sheet taut and avoid wrinkles when the electrode sheet is wound too loosely.

[0034] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rolling device for processing lithium-ion battery electrode sheets, comprising a working plane main body (1); characterized in that: A first working plane (2) and a second working plane (4) are installed on the working plane main body (1), a slide rail (7) is installed on the working plane main body (1), and the second working plane (4) is installed on the slide rail (7); Pressing roller mounting plates (8) are installed on both sides of the first working plane (2) and the second working plane (4). A first pressing roller (11) is installed between the two pressing roller mounting plates (8). A second pressing roller (15) is installed above the first pressing roller (11). A first scraping plate (16) is installed on one side of the first pressing roller (11). A second scraping plate (17) is installed on one side of the second pressing roller (15). Second motors (22) are installed on both sides of the first working plane (2) and the second working plane (4). A support roller (27) is installed between the two second motors (22).

2. A rolling device for processing lithium-ion battery electrode sheets according to claim 1, characterized in that: A first motor (9) is installed on one side of the pressing roller mounting plate (8), a first rotating shaft (10) is installed on the first motor (9), and the first pressing roller (11) is installed on the first rotating shaft (10).

3. The roll pressing device for processing lithium-ion battery electrode sheets according to claim 2, wherein: A first gear (12) is installed on the side of the first rotating shaft (10) away from the first motor (9). The first gear (12) is installed on one side of the pressing roller mounting plate (8). A second gear (13) is installed on the first gear (12), and the first gear (12) meshes with the second gear (13).

4. A rolling device for processing lithium-ion battery electrode sheets according to claim 3, characterized in that: A second rotating shaft (14) is installed on the second gear (13), and the second pressing roller (15) is installed on the second rotating shaft (14).

5. A rolling device for processing lithium-ion battery electrode sheets according to claim 1, characterized in that: A connecting pipe (18) is installed on one side of the first scraping plate (16) and the second scraping plate (17). The connecting pipe (18) is installed on one side of the pressing roller mounting plate (8). A negative pressure fan (19) is installed below the connecting pipe (18).

6. A rolling device for processing lithium-ion battery electrode sheets according to claim 5, characterized in that: A collecting box (20) is installed in the negative pressure fan (19), and a filter cotton (21) is installed in the collecting box (20).

7. A roll pressing device for processing lithium-ion battery electrode sheets according to claim 1, characterized in that: A motor lead screw (23) is installed on the second motor (22), a moving block (24) is installed on the motor lead screw (23), a mounting block (25) is installed in the moving block (24), a third rotating shaft (26) is installed between the mounting blocks (25), and the support roller (27) is installed on the third rotating shaft (26).

8. A rolling device for processing lithium-ion battery electrode sheets according to claim 7, characterized in that: A spring (28) is installed in the moving block (24), and the spring (28) is installed below the mounting block (25).

9. The roll pressing device for processing lithium-ion battery electrode sheets according to claim 1, characterized in that: A chute (5) is opened at the bottom of the second working plane (4), the slide rail (7) is installed in the chute (5), a limiting groove (3) is opened on one side of the first working plane (2), a limiting block (6) is installed on one side of the second working plane (4), and the limiting block (6) is installed in the limiting groove (3).

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