An automated battery pole piece rolling apparatus and method of use thereof

Abstract

The application belongs to the technical field of battery pole piece production, and particularly relates to a battery pole piece automatic rolling equipment and a use method thereof. In view of the problem that the distance between upper and lower rollers of an existing rolling pair roller machine is not easy to adjust, thereby limiting the use range of the lithium battery pole piece rolling pair roller machine, the following scheme is provided. The scheme comprises a U-shaped base, a first adjusting extrusion roller and a first fixed extrusion roller, the first adjusting extrusion roller and the first fixed extrusion roller are arranged in the U-shaped base to roll the battery pole piece, a second adjusting extrusion roller and a second fixed extrusion roller, the second adjusting extrusion roller and the second fixed extrusion roller are arranged on the other side in the U-shaped base to roll the battery pole piece for the second time to prevent rebound, and two groups of lifting mechanisms, which ensure the thickness consistency of the battery pole piece and prevent rebound.

Description

Technical Field

[0001] This invention relates to the field of battery electrode production technology, and in particular to an automated rolling equipment for battery electrodes and its usage method. Background Technology

[0002] The positive and negative electrodes of a battery are generally called battery electrodes. In order to improve the density and thickness uniformity of the surface material of the battery electrodes, the positive and negative electrodes need to be rolled after the coating process. This process is called the rolling of battery electrodes. The rolling process of battery electrodes is the process in which the battery electrodes are pulled into the space between rotating rollers by the friction force generated between the rollers and the battery electrodes, and the battery electrodes are deformed under pressure.

[0003] The spacing between the upper and lower rolls of traditional lithium battery electrode rolling mills is not easily adjustable, which limits the application range of lithium battery electrode rolling mills. Battery electrodes are elastic materials, and currently, battery manufacturers at home and abroad use two-roll mills to roll the electrodes. After a single rolling, the thickness of the battery electrode will rebound. In order to obtain the target thickness and compaction density of the battery electrode, the thickness of the battery electrode needs to be rolled to a level lower than the target thickness first. Then, the battery electrode will reach the target thickness and compaction density through thickness rebound. However, such single rolling equipment results in a large rebound rate of battery electrode thickness and poor consistency of battery electrode thickness.

[0004] To address the aforementioned issues, this invention proposes an automated rolling equipment for battery electrodes and its usage method. Summary of the Invention

[0005] This invention provides an automated rolling equipment for battery electrodes and its usage method, which solves the problem that the spacing between the upper and lower rolls of the existing rolling mill is not easy to adjust, thus limiting the application range of the rolling mill for lithium battery electrodes.

[0006] This invention provides the following technical solution:

[0007] An automated rolling mill for battery electrodes includes a U-shaped base; a first adjusting extrusion roller and a first fixed extrusion roller, both disposed within the U-shaped base for rolling the battery electrodes; a second adjusting extrusion roller and a second fixed extrusion roller, disposed on the other side of the U-shaped base for secondary rolling of the battery electrodes to prevent rebound; two sets of lifting mechanisms, respectively disposed above the first and second adjusting extrusion rollers for adjusting the gap between the first and second adjusting extrusion rollers and the second adjusting extrusion rollers; a drive mechanism disposed on one side of the U-shaped base for controlling the synchronous lifting of the two sets of lifting mechanisms; and an elastic rolling mechanism disposed at the center of the U-shaped base for assisting the second adjusting extrusion roller and the second fixed extrusion roller in anti-rebound rolling of the battery electrodes.

[0008] In one possible design, each of the lifting mechanisms includes a mounting frame fixedly connected to the top of the U-shaped base. A first adjusting U-shaped frame is slidably connected within the mounting frame. A first adjusting extrusion roller is disposed within the first adjusting U-shaped frame. A third groove is provided within the mounting frame. Two first limiting rods are fixedly connected within the third groove. Two threaded plates are slidably connected to the circumferential surfaces of the two first limiting rods. A bidirectional lead screw is rotatably connected within the third groove. The two threaded plates are respectively threaded onto the positive and negative threaded sections of the circumferential surface of the bidirectional lead screw. The bottom ends of the two threaded plates are movably hinged to connecting rods via hinge shafts. The bottom ends of the four connecting rods are movably hinged to the top of the first adjusting U-shaped frame via hinge shafts.

[0009] In one possible design, the drive mechanism includes a T-shaped connecting frame fixedly connected to the sides of two mounting brackets. A first groove is formed within the T-shaped connecting frame. Both bidirectional lead screws extend outwards and pass through the first groove. A first sprocket is fixedly connected to the circumferential surface of the two bidirectional lead screws. A fifth rotating shaft is rotatably connected within the first groove. A second sprocket is fixedly connected to the circumferential surface of the fifth rotating shaft. A first worm is rotatably connected within the first groove. A second groove is formed within the T-shaped connecting frame. The first worm moves downwards and passes through the second groove. A first worm wheel is fixedly connected to the circumferential surface of the first worm. A second worm is rotatably connected within the second groove, and the second worm meshes with the first worm wheel. A second worm wheel is fixedly connected to the circumferential surface of the fifth rotating shaft, and the second worm wheel meshes with the first worm. A chain is drivingly connected to the circumferential surfaces of the second sprocket and the two first sprockets.

[0010] In one possible design, a first rotating shaft is rotatably connected within one of the first adjusting U-shaped frames, and a first adjusting extrusion roller is fixedly connected to the circumferential surface of the first rotating shaft. A third rotating shaft is rotatably connected within the U-shaped base, and a first fixed extrusion roller is fixedly connected to the circumferential surface of the third rotating shaft. A first drive motor is fixedly connected to the side end of one of the first adjusting U-shaped frames, and the first drive motor is connected to the first rotating shaft via a coupling. A second drive motor is fixedly connected to the side end of the U-shaped base, and the second drive motor is connected to the third rotating shaft via a coupling.

[0011] In one possible design, a second rotating shaft is rotatably connected inside the first adjusting U-shaped frame, and a fourth rotating shaft is rotatably connected inside the U-shaped base. The second fixed extrusion roller is fixedly connected to the circumferential surface of the fourth rotating shaft, and the second adjusting extrusion roller is fixedly connected to the circumferential surface of the second rotating shaft.

[0012] In one possible design, the second and fourth rotating shafts respectively extend outward through the side ends of the U-shaped base and one of the first adjusting U-shaped frames, and the first and third rotating shafts respectively extend outward through the U-shaped base and the other first adjusting U-shaped frame. The side ends of the first and second rotating shafts are fixedly connected to first synchronous pulleys, and the circumferential surfaces of the two first synchronous pulleys are driven by a first synchronous belt. The side ends of the third and fourth rotating shafts are fixedly connected to second synchronous pulleys, and the circumferential surfaces of the two second synchronous pulleys are driven by a second synchronous belt.

[0013] In one possible design, the elastic rolling mechanism includes a fixed plate fixedly connected to a U-shaped base. Two mounting blocks are fixedly connected to the top of the U-shaped base. Each of the two mounting blocks has a fourth groove. Two second limiting rods are fixedly connected to each of the two fourth grooves. Arc-shaped extrusion plates are slidably connected to the circumferential surfaces of the four second limiting rods. Two extrusion springs are fixedly connected to the top of each of the two arc-shaped extrusion plates. The four extrusion springs are respectively fixedly connected to the two fourth grooves and respectively sleeved on the circumferential surfaces of the four second limiting rods. A seventh rotating shaft is slidably connected to the two fourth grooves. The two arc-shaped extrusion plates are sleeved on the circumferential surfaces of the seventh rotating shaft. An auxiliary roller is fixedly connected to the circumferential surface of the seventh rotating shaft.

[0014] A method for using an automated battery electrode rolling equipment includes the following steps:

[0015] S1. Height Adjustment: By driving the second worm to rotate, the second worm drives the first worm wheel to rotate, the first worm wheel drives the first worm to rotate, the first worm drives the second worm wheel to rotate, the second worm wheel drives the fifth rotating shaft to rotate, the fifth rotating shaft drives the second sprocket to rotate, the second sprocket drives the chain to rotate, the chain drives the two first sprockets to rotate synchronously, the two first sprockets drive the two bidirectional lead screws to rotate synchronously, the bidirectional lead screws drive the two threaded plates on both sides to move closer or further apart, the two threaded plates move closer or further apart, thereby driving the position of the connecting rods on both sides to adjust, the position of the bottom end of the connecting rods on both sides to move relative to each other, thereby driving the first adjusting U-shaped frame to move up and down, thereby driving the first adjusting extrusion roller and the second adjusting extrusion roller located in the first adjusting U-shaped frame to adjust the height, thereby adjusting the height of the gap between the first adjusting extrusion roller, the second adjusting extrusion roller and the first fixed extrusion roller, the second fixed extrusion roller;

[0016] S2. Initial rolling of battery electrode sheets: By starting the first drive motor and the second drive motor, the first rotating shaft and the third rotating shaft move in opposite directions. The two first adjusting extrusion rollers and the first fixed extrusion roller rotate in opposite directions. The battery electrode sheets pass through the gap between the first adjusting extrusion rollers and the first fixed extrusion rollers after the position is adjusted. The first adjusting extrusion rollers and the first fixed extrusion rollers roll the battery electrode sheets to achieve the required height.

[0017] S3, Elastic Rolling: After the initial rolling, the battery electrode enters between the auxiliary roller and the fixed plate. The battery electrode will squeeze the auxiliary roller upward, and the auxiliary roller will drive the seventh rotating shaft to squeeze the arc-shaped extrusion plate. The arc-shaped extrusion plate will squeeze the extrusion spring. The elasticity of the extrusion spring will give the arc-shaped extrusion plate and the auxiliary roller a reverse force. The auxiliary roller will apply pressure to the battery electrode passing between the auxiliary roller and the fixed plate to prevent it from rebounding.

[0018] S4. Secondary Rolling: The first and third rotating shafts drive the first and second synchronous pulleys to rotate, respectively. The first and second synchronous pulleys drive the first and second synchronous pulleys on the other side to rotate via the first and second synchronous belts, respectively. The first and second synchronous pulleys on the other side drive the second and fourth rotating shafts to rotate, and the rotation of the second and fourth rotating shafts drives the second adjusting extrusion roller and the second fixed extrusion roller to rotate, thereby performing secondary rolling on the battery electrode sheet, compacting the battery electrode sheet and preventing rebound.

[0019] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0020] In this invention, the second worm is driven to rotate, which in turn drives the first worm wheel to rotate. The first worm wheel then drives the first worm to rotate, which in turn drives the second worm wheel to rotate. The second worm wheel then drives the fifth rotating shaft to rotate, which in turn drives the second sprocket to rotate. The second sprocket then drives the chain to rotate, which in turn drives the two first sprockets to rotate synchronously. The two first sprockets then drive the two bidirectional lead screws to rotate synchronously. The bidirectional lead screws then drive the two threaded plates on both sides to move closer to or further apart. This movement of the two threaded plates towards or away from each other adjusts the position of the connecting rods on both sides. When the position of the connecting rods on both sides is adjusted, the bottom ends of the connecting rods on both sides move relative to each other, which in turn drives the first adjusting U-shaped frame to move up and down. This movement of the first adjusting extrusion roller and the second adjusting extrusion roller located in the first adjusting U-shaped frame adjusts their height, thereby adjusting the height of the gap between the first adjusting extrusion roller, the second adjusting extrusion roller, the first fixed extrusion roller, and the second fixed extrusion roller.

[0021] In this invention, after the battery electrode sheet undergoes preliminary rolling, it enters between the auxiliary roller and the fixed plate. The battery electrode sheet will press upward against the auxiliary roller, and the auxiliary roller will drive the seventh rotating shaft to press the arc-shaped extrusion plate. The arc-shaped extrusion plate will press the extrusion spring. The elasticity of the extrusion spring will give the arc-shaped extrusion plate and the auxiliary roller a reverse force. The auxiliary roller will apply pressure to the battery electrode sheet passing between the auxiliary roller and the fixed plate to prevent it from rebounding.

[0022] In this invention, the device rolls the battery electrode sheet using a first adjusting extrusion roller, a first fixed extrusion roller, a second adjusting extrusion roller, and a second fixed extrusion roller, respectively. The two rolling processes effectively reduce the probability of the battery electrode sheet rebounding. An elastic rolling mechanism limits the battery electrode sheet between the first and second rolling processes, giving the battery electrode sheet rolled once a reaction time. The extrusion force applied to the auxiliary roller by the battery electrode sheet rolled once is used, and the auxiliary roller positions the battery electrode sheet after the first rolling process using the elasticity of the extrusion spring. Then, a second rolling process is performed to shape the battery electrode sheet, ensuring the consistency of the battery electrode sheet thickness and preventing rebounding. Attached Figure Description

[0023] Figure 1 This is a first front perspective view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention;

[0024] Figure 2 This is a second front perspective view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention;

[0025] Figure 3This is a first partial perspective view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention;

[0026] Figure 4 This is a first partial cross-sectional view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention;

[0027] Figure 5 This is a second partial perspective view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention;

[0028] Figure 6 This is a second partial cross-sectional view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention;

[0029] Figure 7 This is a third partial cross-sectional view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention;

[0030] Figure 8 A fourth partial cross-sectional view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention;

[0031] Figure 9 A third partial perspective view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention;

[0032] Figure 10 This is a fifth partial cross-sectional view of an automated battery electrode rolling equipment and its usage method provided in an embodiment of the present invention.

[0033] Figure label:

[0034] 1. U-shaped base; 2. Mounting bracket; 3. First adjusting squeeze roller; 31. Second adjusting squeeze roller; 4. First fixed squeeze roller; 41. Second fixed squeeze roller; 5. First adjusting U-shaped bracket; 6. First rotating shaft; 61. Second rotating shaft; 7. Third rotating shaft; 71. Fourth rotating shaft; 8. First synchronous pulley; 81. Second synchronous pulley; 9. First synchronous belt; 91. Second synchronous belt; 10. First drive motor; 101. Second drive motor; 11. T-shaped connecting bracket; 12. First groove; 13. 14. First sprocket; 15. Chain; 16. Fifth shaft; 17. Second sprocket; 18. First worm gear; 19. Second groove; 20. Second worm gear; 21. First worm wheel; 22. Third groove; 23. First limiting rod; 24. Threaded plate; 25. Second worm wheel; 26. Connecting rod; 27. Fixing plate; 28. Mounting block; 29. ​​Auxiliary roller; 30. Fourth groove; 32. Arc-shaped extrusion plate; 33. Second limiting rod; 34. Extrusion spring; 39. Seventh shaft. Detailed Implementation

[0035] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0036] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0037] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0038] In this embodiment of the invention, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0039] References to "one embodiment" or "some embodiments" as used in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the invention. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless otherwise specifically emphasized.

[0040] Example 1

[0041] Reference Figures 1-10An automated rolling equipment for battery electrodes includes a U-shaped base 1; a first adjusting extrusion roller 3 and a first fixed extrusion roller 4, which are disposed within the U-shaped base 1 for rolling the battery electrodes; a second adjusting extrusion roller 31 and a second fixed extrusion roller 41, which are disposed on the other side of the U-shaped base 1 for secondary rolling of the battery electrodes to prevent rebound; two sets of lifting mechanisms, which are respectively disposed above the first adjusting extrusion roller 3 and the second adjusting extrusion roller 31 for adjusting the gap distance between the first adjusting extrusion roller 3 and the first fixed extrusion roller 4 and the second adjusting extrusion roller 31 and the second fixed extrusion roller 41; a drive mechanism, which is disposed on one side of the U-shaped base 1 for controlling the two sets of lifting mechanisms to lift synchronously; and an elastic rolling mechanism, which is disposed at the center position within the U-shaped base 1 for assisting the second adjusting extrusion roller 31 and the second fixed extrusion roller 41 in anti-rebound rolling of the battery electrodes.

[0042] The battery electrode sheet is rolled by the first adjusting extrusion roller 3, the first fixed extrusion roller 4, the second adjusting extrusion roller 31, and the second fixed extrusion roller 41 respectively. The two rolling processes can effectively reduce the probability of the battery electrode sheet rebounding. The elastic rolling mechanism provides a limit to the battery electrode sheet between the first and second rolling processes, giving the battery electrode sheet rolled once a reaction time. The extrusion force applied to the auxiliary roller 29 by the battery electrode sheet rolled once is used. The auxiliary roller 29 uses the elasticity of the extrusion spring 34 to position the battery electrode sheet after the first rolling process. Then, it is rolled and shaped twice to ensure the thickness consistency of the battery electrode sheet and prevent rebounding.

[0043] Reference Figure 6 and Figure 7 Each lifting mechanism includes a mounting frame 2 fixedly connected to the top of the U-shaped base 1. A first adjusting U-shaped frame 5 is slidably connected inside the mounting frame 2. A first adjusting squeezing roller 3 is located inside the first adjusting U-shaped frame 5. A third groove 22 is provided inside the mounting frame 2. Two first limiting rods 23 are fixedly connected inside the third groove 22. Two threaded plates 24 are slidably connected to the circumferential surfaces of the two first limiting rods 23. A bidirectional lead screw 13 is rotatably connected inside the third groove 22. The two threaded plates 24 are respectively threaded to the positive and negative thread sections on the circumferential surface of the bidirectional lead screw 13. The bottom ends of the two threaded plates 24 are movably hinged to the connecting rods 26 through hinge shafts. The bottom ends of the four connecting rods 26 are movably hinged to the top of the first adjusting U-shaped frame 5 through hinge shafts.

[0044] Reference Figure 4 , Figure 5 and Figure 6The drive mechanism includes a T-shaped connecting frame 11 fixedly connected to the sides of two mounting brackets 2. A first groove 12 is formed within the T-shaped connecting frame 11. Two bidirectional lead screws 13 extend outwards and pass through the first groove 12. A first sprocket 14 is fixedly connected to the circumferential surface of the two bidirectional lead screws 13. A fifth rotating shaft 16 is rotatably connected within the first groove 12. A second sprocket 17 is fixedly connected to the circumferential surface of the fifth rotating shaft 16. A first worm gear 18 is rotatably connected within the first groove 12. A second groove 19 is provided inside the first worm 18, which moves downward and passes through the second groove 19. A first worm wheel 21 is fixedly connected to the circumferential surface of the first worm 18. A second worm 20 is rotatably connected inside the second groove 19. The second worm 20 and the first worm wheel 21 mesh with each other. A second worm wheel 25 is fixedly connected to the circumferential surface of the fifth rotating shaft 16. The second worm wheel 25 meshes with the first worm 18. A chain 15 is drivingly connected to the circumferential surfaces of the second sprocket 17 and the two first sprockets 14.

[0045] By driving the second worm gear 20 to rotate, the second worm gear 20 drives the first worm wheel 21 to rotate, the first worm wheel 21 drives the first worm gear 18 to rotate, the first worm gear 18 drives the second worm wheel 25 to rotate, the second worm wheel 25 drives the fifth shaft 16 to rotate, the fifth shaft 16 drives the second sprocket 17 to rotate, the second sprocket 17 drives the chain 15 to rotate, the chain 15 drives the two first sprockets 14 to rotate synchronously, the two first sprockets 14 drive the two bidirectional lead screws 13 to rotate synchronously, and the bidirectional lead screws 13 drive the two on both sides... The movement of the two threaded plates 24 toward each other or away from each other causes the positions of the connecting rods 26 on both sides to be adjusted. When the positions of the connecting rods 26 on both sides are adjusted, the positions of the bottom ends of the connecting rods 26 on both sides move relative to each other, thereby causing the first adjusting U-shaped frame 5 to move up and down. This causes the first adjusting squeezing roller 3 and the second adjusting squeezing roller 31 located in the first adjusting U-shaped frame 5 to adjust their height, thereby adjusting the height of the gap between the first adjusting squeezing roller 3, the second adjusting squeezing roller 31 and the first fixed squeezing roller 4, the second fixed squeezing roller 41.

[0046] Reference Figure 1 , Figure 3 and Figure 10The elastic rolling mechanism includes a fixed plate 27 fixedly connected to a U-shaped base 1. Two mounting blocks 28 are fixedly connected to the top of the U-shaped base 1. Each mounting block 28 has a fourth groove 30. Two second limiting rods 33 are fixedly connected to each of the two fourth grooves 30. Arc-shaped extrusion plates 32 are slidably connected to the circumferential surfaces of the four second limiting rods 33. Two extrusion springs 34 are fixedly connected to the top of each of the two arc-shaped extrusion plates 32. The four extrusion springs 34 are respectively fixedly connected to the two fourth grooves 30 and respectively sleeved on the circumferential surfaces of the four second limiting rods 33. A seventh rotating shaft 39 is slidably connected to the two fourth grooves 30. The two arc-shaped extrusion plates 32 are sleeved on the circumferential surfaces of the seventh rotating shaft 39. An auxiliary roller 29 is fixedly connected to the circumferential surface of the seventh rotating shaft 39.

[0047] After initial rolling, the battery electrode enters between the auxiliary roller 29 and the fixed plate 27. The battery electrode will press upward against the auxiliary roller 29. The auxiliary roller 29 drives the seventh rotating shaft 39 to press against the arc-shaped extrusion plate 32. The arc-shaped extrusion plate 32 will press against the extrusion spring 34. The elasticity of the extrusion spring 34 will give the arc-shaped extrusion plate 32 and the auxiliary roller 29 a reverse force. The auxiliary roller 29 will apply pressure to the battery electrode passing between the auxiliary roller 29 and the fixed plate 27 to prevent it from rebounding.

[0048] Example 2

[0049] Reference Figures 1-10 An automated rolling equipment for battery electrodes includes a U-shaped base 1; a first adjusting extrusion roller 3 and a first fixed extrusion roller 4, which are disposed within the U-shaped base 1 for rolling the battery electrodes; a second adjusting extrusion roller 31 and a second fixed extrusion roller 41, which are disposed on the other side of the U-shaped base 1 for secondary rolling of the battery electrodes to prevent rebound; two sets of lifting mechanisms, which are respectively disposed above the first adjusting extrusion roller 3 and the second adjusting extrusion roller 31 for adjusting the gap distance between the first adjusting extrusion roller 3 and the first fixed extrusion roller 4 and the second adjusting extrusion roller 31 and the second fixed extrusion roller 41; a drive mechanism, which is disposed on one side of the U-shaped base 1 for controlling the two sets of lifting mechanisms to lift synchronously; and an elastic rolling mechanism, which is disposed at the center position within the U-shaped base 1 for assisting the second adjusting extrusion roller 31 and the second fixed extrusion roller 41 in anti-rebound rolling of the battery electrodes.

[0050] The battery electrode sheet is rolled by the first adjusting extrusion roller 3, the first fixed extrusion roller 4, the second adjusting extrusion roller 31, and the second fixed extrusion roller 41 respectively. The two rolling processes can effectively reduce the probability of the battery electrode sheet rebounding. The elastic rolling mechanism provides a limit to the battery electrode sheet between the first and second rolling processes, giving the battery electrode sheet rolled once a reaction time. The extrusion force applied to the auxiliary roller 29 by the battery electrode sheet rolled once is used. The auxiliary roller 29 uses the elasticity of the extrusion spring 34 to position the battery electrode sheet after the first rolling process. Then, it is rolled and shaped twice to ensure the thickness consistency of the battery electrode sheet and prevent rebounding.

[0051] Reference Figure 6 and Figure 7 Each lifting mechanism includes a mounting frame 2 fixedly connected to the top of the U-shaped base 1. A first adjusting U-shaped frame 5 is slidably connected inside the mounting frame 2. A first adjusting squeezing roller 3 is located inside the first adjusting U-shaped frame 5. A third groove 22 is provided inside the mounting frame 2. Two first limiting rods 23 are fixedly connected inside the third groove 22. Two threaded plates 24 are slidably connected to the circumferential surfaces of the two first limiting rods 23. A bidirectional lead screw 13 is rotatably connected inside the third groove 22. The two threaded plates 24 are respectively threaded to the positive and negative thread sections on the circumferential surface of the bidirectional lead screw 13. The bottom ends of the two threaded plates 24 are movably hinged to the connecting rods 26 through hinge shafts. The bottom ends of the four connecting rods 26 are movably hinged to the top of the first adjusting U-shaped frame 5 through hinge shafts.

[0052] Reference Figure 4 , Figure 5 and Figure 6 The drive mechanism includes a T-shaped connecting frame 11 fixedly connected to the sides of two mounting brackets 2. A first groove 12 is formed within the T-shaped connecting frame 11. Two bidirectional lead screws 13 extend outwards and pass through the first groove 12. A first sprocket 14 is fixedly connected to the circumferential surface of the two bidirectional lead screws 13. A fifth rotating shaft 16 is rotatably connected within the first groove 12. A second sprocket 17 is fixedly connected to the circumferential surface of the fifth rotating shaft 16. A first worm gear 18 is rotatably connected within the first groove 12. A second groove 19 is provided inside the first worm 18, which moves downward and passes through the second groove 19. A first worm wheel 21 is fixedly connected to the circumferential surface of the first worm 18. A second worm 20 is rotatably connected inside the second groove 19. The second worm 20 and the first worm wheel 21 mesh with each other. A second worm wheel 25 is fixedly connected to the circumferential surface of the fifth rotating shaft 16. The second worm wheel 25 meshes with the first worm 18. A chain 15 is drivingly connected to the circumferential surfaces of the second sprocket 17 and the two first sprockets 14.

[0053] By driving the second worm gear 20 to rotate, the second worm gear 20 drives the first worm wheel 21 to rotate, the first worm wheel 21 drives the first worm gear 18 to rotate, the first worm gear 18 drives the second worm wheel 25 to rotate, the second worm wheel 25 drives the fifth shaft 16 to rotate, the fifth shaft 16 drives the second sprocket 17 to rotate, the second sprocket 17 drives the chain 15 to rotate, the chain 15 drives the two first sprockets 14 to rotate synchronously, the two first sprockets 14 drive the two bidirectional lead screws 13 to rotate synchronously, and the bidirectional lead screws 13 drive the two on both sides... The movement of the two threaded plates 24 toward each other or away from each other causes the positions of the connecting rods 26 on both sides to be adjusted. When the positions of the connecting rods 26 on both sides are adjusted, the positions of the bottom ends of the connecting rods 26 on both sides move relative to each other, thereby causing the first adjusting U-shaped frame 5 to move up and down. This causes the first adjusting extrusion roller 3 and the second adjusting extrusion roller 31 located in the first adjusting U-shaped frame 5 to adjust their height, thereby adjusting the height of the gap between the first adjusting extrusion roller 3, the second adjusting extrusion roller 31 and the first fixed extrusion roller 4, the second fixed extrusion roller 41.

[0054] Furthermore, the second worm gear 20 extends outward through the side end of the T-shaped connecting frame 11. A handle or other auxiliary tool is provided on the side end of the second worm gear 20 to facilitate its rotation.

[0055] Reference Figure 1 , Figure 4 and Figure 10 One of the first adjusting U-shaped frames 5 is rotatably connected to a first rotating shaft 6, and a first adjusting extrusion roller 3 is fixedly connected to the circumferential surface of the first rotating shaft 6. A third rotating shaft 7 is rotatably connected to a U-shaped base 1, and a first fixed extrusion roller 4 is fixedly connected to the circumferential surface of the third rotating shaft 7. A first drive motor 10 is fixedly connected to the side end of one of the first adjusting U-shaped frames 5, and the first drive motor 10 is connected to the first rotating shaft 6 via a coupling. A second drive motor 101 is fixedly connected to the side end of the U-shaped base 1, and the second drive motor 101 is connected to the third rotating shaft 7 via a coupling.

[0056] Reference Figure 4 and Figure 10 Another first adjusting U-shaped frame 5 is rotatably connected to a second rotating shaft 61, and a fourth rotating shaft 71 is rotatably connected to a U-shaped base 1. A second fixed extrusion roller 41 is fixedly connected to the circumferential surface of the fourth rotating shaft 71, and a second adjusting extrusion roller 31 is fixedly connected to the circumferential surface of the second rotating shaft 61.

[0057] Reference Figure 8 and Figure 9The second rotating shaft 61 and the fourth rotating shaft 71 respectively move outward through the side end of the U-shaped base 1 and one of the first adjusting U-shaped frames 5 and extend outward. The first rotating shaft 6 and the third rotating shaft 7 respectively move outward through the U-shaped base 1 and the other first adjusting U-shaped frame 5. The side ends of the first rotating shaft 6 and the second rotating shaft 61 are fixedly connected to the first synchronous pulley 8. The circumferential surfaces of the two first synchronous pulleys 8 are driven by the first synchronous belt 9. The side ends of the third rotating shaft 7 and the fourth rotating shaft 71 are fixedly connected to the second synchronous pulley 81. The circumferential surfaces of the two second synchronous pulleys 81 are driven by the second synchronous belt 91.

[0058] By activating the first drive motor 10 and the second drive motor 101, the first rotating shaft 6 and the third rotating shaft 7 move in opposite directions. The two first adjusting extrusion rollers 3 and the first fixed extrusion roller 4 rotate in opposite directions, utilizing the gap between the first adjusting extrusion rollers 3 and the first fixed extrusion roller 4 after the battery electrode has been positioned. The first adjusting extrusion rollers 3 and the first fixed extrusion roller 4 roll the battery electrode to the required height. The first rotating shaft 6 and the third rotating shaft 7 respectively drive the first synchronous pulley 8 and the second synchronous pulley 81 to rotate. The first synchronous pulley 8 and the second synchronous pulley 81 drive the other side's first synchronous pulley 8 and the second synchronous pulley 81 to rotate via the first synchronous belt 9 and the second synchronous belt 91. The other side's first synchronous pulley 8 and the second synchronous pulley 81 drive the second rotating shaft 61 and the fourth rotating shaft 71 to rotate. The rotation of the second rotating shaft 61 and the fourth rotating shaft 71 drives the second adjusting extrusion roller 31 and the second fixed extrusion roller 41 to rotate, thus performing a secondary rolling of the battery electrode, compacting the battery electrode, and preventing rebound.

[0059] Reference Figure 1 , Figure 3 and Figure 10 The elastic rolling mechanism includes a fixed plate 27 fixedly connected to a U-shaped base 1. Two mounting blocks 28 are fixedly connected to the top of the U-shaped base 1. Each mounting block 28 has a fourth groove 30. Two second limiting rods 33 are fixedly connected to each of the two fourth grooves 30. Arc-shaped extrusion plates 32 are slidably connected to the circumferential surfaces of the four second limiting rods 33. Two extrusion springs 34 are fixedly connected to the top of each of the two arc-shaped extrusion plates 32. The four extrusion springs 34 are respectively fixedly connected to the two fourth grooves 30 and respectively sleeved on the circumferential surfaces of the four second limiting rods 33. A seventh rotating shaft 39 is slidably connected to the two fourth grooves 30. The two arc-shaped extrusion plates 32 are sleeved on the circumferential surfaces of the seventh rotating shaft 39. An auxiliary roller 29 is fixedly connected to the circumferential surface of the seventh rotating shaft 39.

[0060] After initial rolling, the battery electrode enters between the auxiliary roller 29 and the fixed plate 27. The battery electrode will press upward against the auxiliary roller 29. The auxiliary roller 29 drives the seventh rotating shaft 39 to press against the arc-shaped extrusion plate 32. The arc-shaped extrusion plate 32 will press against the extrusion spring 34. The elasticity of the extrusion spring 34 will give the arc-shaped extrusion plate 32 and the auxiliary roller 29 a reverse force. The auxiliary roller 29 will apply pressure to the battery electrode passing between the auxiliary roller 29 and the fixed plate 27 to prevent it from rebounding.

[0061] A method for using an automated battery electrode rolling equipment includes the following steps:

[0062] S1. Height Adjustment: The second worm 20 is rotated, which in turn rotates the first worm wheel 21. The first worm wheel 21 then rotates the first worm 18, which in turn rotates the second worm wheel 25. The second worm wheel 25 rotates the fifth shaft 16, which in turn rotates the second sprocket 17. The second sprocket 17 rotates the chain 15, which in turn rotates the two first sprockets 14 synchronously. The two first sprockets 14 then rotate the two bidirectional lead screws 13 synchronously, which in turn rotate... The two threaded plates 24 on both sides move toward each other or away from each other. The movement of the two threaded plates 24 toward each other or away from each other drives the position of the connecting rods 26 on both sides to be adjusted. When the position of the connecting rods 26 on both sides is adjusted, the position of the bottom end of the connecting rods 26 on both sides moves relative to each other, thereby driving the first adjusting U-shaped frame 5 to move up and down. This drives the first adjusting extrusion roller 3 and the second adjusting extrusion roller 31 located in the first adjusting U-shaped frame 5 to adjust their height, thereby adjusting the height of the gap between the first adjusting extrusion roller 3, the second adjusting extrusion roller 31 and the first fixed extrusion roller 4, the second fixed extrusion roller 41.

[0063] S2. Initial rolling of battery electrode sheets: By starting the first drive motor 10 and the second drive motor 101, the first rotating shaft 6 and the third rotating shaft 7 move in opposite directions. The two first adjusting extrusion rollers 3 and the first fixed extrusion roller 4 rotate in opposite directions. The battery electrode sheets are rolled by the first adjusting extrusion rollers 3 and the first fixed extrusion roller 4 after the position is adjusted, so that they reach the required height.

[0064] S3, Elastic Rolling: After the initial rolling, the battery electrode enters between the auxiliary roller 29 and the fixed plate 27. The battery electrode will press upward against the auxiliary roller 29. The auxiliary roller 29 drives the seventh rotating shaft 39 to press the arc-shaped extrusion plate 32. The arc-shaped extrusion plate 32 will press the extrusion spring 34. The elasticity of the extrusion spring 34 will give the arc-shaped extrusion plate 32 and the auxiliary roller 29 a reverse force. The auxiliary roller 29 will apply pressure to the battery electrode passing between the auxiliary roller 29 and the fixed plate 27 to prevent it from rebounding.

[0065] S4. Secondary Rolling: The first rotating shaft 6 and the third rotating shaft 7 drive the first synchronous pulley 8 and the second synchronous pulley 81 to rotate respectively. The first synchronous pulley 8 and the second synchronous pulley 81 drive the first synchronous pulley 8 and the second synchronous pulley 81 on the other side to rotate respectively through the first synchronous belt 9 and the second synchronous belt 91. The first synchronous pulley 8 and the second synchronous pulley 81 on the other side drive the second rotating shaft 61 and the fourth rotating shaft 71 to rotate. The rotation of the second rotating shaft 61 and the fourth rotating shaft 71 drives the second adjusting extrusion roller 31 and the second fixed extrusion roller 41 to rotate, thereby performing secondary rolling on the battery electrode sheet, compacting the battery electrode sheet and preventing rebound.

[0066] However, as is well known to those skilled in the art, the working principles and wiring methods of the first drive motor 10 and the second drive motor 101 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0067] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automated rolling equipment for battery electrodes, comprising: U-shaped base; The first adjusting extrusion roller and the first fixed extrusion roller are disposed inside the U-shaped base for rolling the battery electrode sheets; The second adjusting extrusion roller and the second fixed extrusion roller are located on the other side of the U-shaped base to perform secondary rolling on the battery electrode sheets to prevent rebound. The feature is that it further includes: Two sets of lifting mechanisms are respectively located on the upper side of the first adjusting extrusion roller and the second adjusting extrusion roller to adjust the gap distance between the first adjusting extrusion roller and the first fixed extrusion roller and the second adjusting extrusion roller and the second fixed extrusion roller. The drive mechanism is located on one side of the U-shaped base and is used to control the two sets of lifting mechanisms to lift synchronously. An elastic rolling mechanism is located at the center of a U-shaped base to assist the second adjusting extrusion roller and the second fixed extrusion roller in anti-rebound rolling of the battery electrode sheets. Each lifting mechanism includes a mounting frame fixedly connected to the top of the U-shaped base. A first adjusting U-shaped frame is slidably connected within the mounting frame. The first adjusting extrusion roller is located within the first adjusting U-shaped frame. A third groove is provided within the mounting frame. Two first limiting rods are fixedly connected within the third groove. Two threaded plates are slidably connected to the circumferential surfaces of the two first limiting rods. A bidirectional lead screw is rotatably connected within the third groove. The two threaded plates are respectively threaded onto the positive and negative thread sections of the bidirectional lead screw's circumferential surface. The bottom ends of the two threaded plates are movably hinged to connecting rods via hinge shafts. The bottom ends of the four connecting rods are all connected to... The elastic rolling mechanism is hinged to the top of the first adjusting U-shaped frame via a hinge shaft. It includes a fixed plate fixedly connected to the U-shaped base. Two mounting blocks are fixedly connected to the top of the U-shaped base. Each mounting block has a fourth groove. Two second limiting rods are fixedly connected to each of the two fourth grooves. Arc-shaped extrusion plates are slidably connected to the circumferential surfaces of the four second limiting rods. Two extrusion springs are fixedly connected to the top of each of the two arc-shaped extrusion plates. The four extrusion springs are respectively fixedly connected to the two fourth grooves and respectively sleeved on the circumferential surfaces of the four second limiting rods. A seventh rotating shaft is slidably connected to the two fourth grooves. The two arc-shaped extrusion plates are sleeved on the circumferential surfaces of the seventh rotating shaft. An auxiliary roller is fixedly connected to the circumferential surface of the seventh rotating shaft.

2. The automated rolling equipment for battery electrodes according to claim 1, characterized in that, The drive mechanism includes a T-shaped connecting frame fixedly connected to the sides of two mounting brackets. A first groove is formed within the T-shaped connecting frame. Both bidirectional lead screws extend outwards and pass through the first groove. A first sprocket is fixedly connected to the circumferential surface of the two bidirectional lead screws. A fifth rotating shaft is rotatably connected within the first groove. A second sprocket is fixedly connected to the circumferential surface of the fifth rotating shaft. A first worm is rotatably connected within the first groove. A second groove is formed within the T-shaped connecting frame. The first worm moves downwards and passes through the second groove. A first worm wheel is fixedly connected to the circumferential surface of the first worm. A second worm is rotatably connected within the second groove, and the second worm and the first worm wheel mesh. A second worm wheel is fixedly connected to the circumferential surface of the fifth rotating shaft, and the second worm wheel meshes with the first worm. A chain is drivingly connected to the circumferential surfaces of the second sprocket and the two first sprockets.

3. The automated rolling equipment for battery electrodes according to claim 2, characterized in that, One of the first adjusting U-shaped frames is rotatably connected to a first rotating shaft, and the first adjusting extrusion roller is fixedly connected to the circumferential surface of the first rotating shaft. The U-shaped base is rotatably connected to a third rotating shaft, and the first fixed extrusion roller is fixedly connected to the circumferential surface of the third rotating shaft. One of the first adjusting U-shaped frames is fixedly connected to a first drive motor at one side end, and the first drive motor is connected to the first rotating shaft via a coupling. The U-shaped base is fixedly connected to a second drive motor (101) at one side end, and the second drive motor (101) is connected to the third rotating shaft via a coupling.

4. The automated rolling equipment for battery electrodes according to claim 3, characterized in that, Another first adjusting U-shaped frame is rotatably connected to a second rotating shaft, and the U-shaped base is rotatably connected to a fourth rotating shaft. The second fixed extrusion roller is fixedly connected to the circumferential surface of the fourth rotating shaft, and the second adjusting extrusion roller is fixedly connected to the circumferential surface of the second rotating shaft.

5. The automated rolling equipment for battery electrodes according to claim 4, characterized in that, The second and fourth rotating shafts respectively move outward through the side of the U-shaped base and one of the first adjusting U-shaped frames and extend outward. The first and third rotating shafts respectively move outward through the U-shaped base and the other first adjusting U-shaped frame. The side ends of the first and second rotating shafts are fixedly connected to the first synchronous pulleys. The circumferential surfaces of the two first synchronous pulleys are driven by the first synchronous belt. The side ends of the third and fourth rotating shafts are fixedly connected to the second synchronous pulleys. The circumferential surfaces of the two second synchronous pulleys are driven by the second synchronous belt.

6. The method of using an automated battery electrode rolling equipment according to claim 5, characterized in that, Includes the following steps: S1. Height Adjustment: By driving the second worm to rotate, the second worm drives the first worm wheel to rotate, the first worm wheel drives the first worm to rotate, the first worm drives the second worm wheel to rotate, the second worm wheel drives the fifth rotating shaft to rotate, the fifth rotating shaft drives the second sprocket to rotate, the second sprocket drives the chain to rotate, the chain drives the two first sprockets to rotate synchronously, the two first sprockets drive the two bidirectional lead screws to rotate synchronously, the bidirectional lead screws drive the two threaded plates on both sides to move closer or further apart, the two threaded plates move closer or further apart, thereby driving the position of the connecting rods on both sides to adjust, the position of the bottom end of the connecting rods on both sides to move relative to each other, thereby driving the first adjusting U-shaped frame to move up and down, thereby driving the first adjusting extrusion roller and the second adjusting extrusion roller located in the first adjusting U-shaped frame to adjust the height, thereby adjusting the height of the gap between the first adjusting extrusion roller, the second adjusting extrusion roller and the first fixed extrusion roller, the second fixed extrusion roller; S2, Initial rolling of battery electrode: By starting the first drive motor and the second drive motor (101), the first rotating shaft and the third rotating shaft move in opposite directions. The two first adjusting extrusion rollers and the first fixed extrusion roller rotate in opposite directions. The battery electrode passes through the gap between the first adjusting extrusion roller and the first fixed extrusion roller after the position is adjusted. The first adjusting extrusion roller and the first fixed extrusion roller roll the electrode to achieve the required height. S3, Elastic Rolling: After the initial rolling, the battery electrode enters between the auxiliary roller and the fixed plate. The battery electrode will squeeze the auxiliary roller upward. The auxiliary roller drives the seventh rotating shaft to squeeze the arc-shaped extrusion plate. The arc-shaped extrusion plate will squeeze the extrusion spring. The elasticity of the extrusion spring will give the arc-shaped extrusion plate and the auxiliary roller a reverse force. The auxiliary roller will apply an extrusion force to the battery electrode passing between the auxiliary roller and the fixed plate to prevent it from rebounding. S4. Secondary Rolling: The first and third rotating shafts drive the first and second synchronous pulleys to rotate, respectively. The first and second synchronous pulleys drive the first and second synchronous pulleys on the other side to rotate via the first and second synchronous belts, respectively. The first and second synchronous pulleys on the other side drive the second and fourth rotating shafts to rotate, and the rotation of the second and fourth rotating shafts drives the second adjusting extrusion roller and the second fixed extrusion roller to rotate, thereby performing secondary rolling on the battery electrode sheet, compacting the battery electrode sheet and preventing rebound.

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