Battery pole piece roller press with foil rolling wheels
By designing a battery pole roller press with foil roller wheel, the problem of partial folds of hollow foil during the pole roller press is solved, uniform rolling is achieved, and the performance of the battery is improved.
Patent Information
- Application Number
- CN202422116987.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-30
AI Technical Summary
During the rolling process of the electrode sheet, the ductility of the coated part and the uncoated foil part is different, resulting in wrinkles in the hollow foil part, affecting the normal use of the electrode sheet.
A battery pole roller press with foil roller wheel is designed, including a pole roller press device and a foil roller press device. By rolling the empty foil portion in advance before the pole roller press, it prevents the generation of wrinkles, and adjusts the rolling distance through the lifting device and the distance adjustment assembly to ensure uniform rolling pressure.
It effectively prevents wrinkles from occurring after rolling the pole sheet, realizes uniform rolling of the pole sheet, and improves the battery capacity and cycle life.
Smart Images
Figure CN223052153U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of pole piece rolling, and particularly relates to a battery pole piece rolling machine with a foil rolling wheel. Background Technique
[0002] The purpose of rolling the pole piece is that during the manufacturing process of the battery, the compaction density and compactness have a great influence on the battery performance. The higher the compactness of the pole piece, the higher the capacity of the battery can be made. An appropriate compaction density can increase the discharge capacity of the battery, reduce the internal resistance, extend the cycle life of the battery, and improve the utilization rate of the lithium-ion battery. Therefore, rolling the pole piece is a very important process in the battery manufacturing process.
[0003] At present, during the rolling process of the pole piece, due to the different pressures on the coated part and the uncoated foil part of the pole piece, the elongation rates of the empty foil part and the coated part are different, resulting in wrinkles in the uncoated part of the pole piece, which affects the normal use of the subsequent pole piece. Content of the Utility Model
[0004] The purpose of the utility model is to provide a battery pole piece rolling machine with a foil rolling wheel to solve the technical problems proposed in the above background technique.
[0005] To achieve the above purpose, the specific technical solution of a battery pole piece rolling machine with a foil rolling wheel of the utility model is as follows:
[0006] A battery pole piece rolling machine with a foil rolling wheel includes a base, a first bracket is provided on the base, and a pole piece rolling device for rolling the pole piece and a foil rolling device for rolling the empty foil part of the pole piece are provided on the first bracket. The pole piece rolling device includes a first support roller and a first pressing roller rotatably arranged in the first bracket through a rotating shaft, and a first motor arranged on the outer wall of the first bracket, and the first motor is connected to the rotating shaft of the first support roller. The foil rolling device includes a guide frame arranged on the first bracket, an installation frame is arranged on the guide frame, a second pressing roller is rotatably arranged in the installation frame, and arms are symmetrically arranged on the first bracket below the second pressing roller with the center of the first bracket as the center, and a second support roller is rotatably arranged between the two arms.
[0007] Further, a lifting device for adjusting the height of the first pressing roller is provided on the first bracket, and the lifting device includes a first electric push rod arranged on the first bracket, and a second bracket is arranged on the first electric push rod. It is slidably arranged on the connecting block of the first bracket, and a second sliding groove for the connecting block to slide is opened on the first bracket. Each rotating shaft of the first pressing roller is rotatably connected to its corresponding connecting block, and the second bracket is connected to the connecting block.
[0008] Further, a slider is provided on the guide frame, the installation frame is located below the slider, and the installation frame is connected to the slider through a second electric push rod.
[0009] Furthermore, a reinforcing plate is provided on the mounting bracket, and the reinforcing plate is slidably arranged with the slider. A second chute for the sliding of the reinforcing plate is provided on the slider.
[0010] Furthermore, there are two sliders on the guiding frame, and the guiding frame is slidably arranged with the sliders. A distance adjusting assembly for adjusting the distance between the two sliders is provided on the guiding frame. The distance adjusting assembly includes two fixing blocks arranged on the guiding frame outside the two sliders. A forward and reverse threaded rod is rotatably arranged between the two fixing blocks. The forward and reverse threaded rod penetrates through the two sliders and is threadedly connected with the sliders. A second motor is arranged on the guiding frame, and the second motor is connected with the forward and reverse threaded rod.
[0011] Furthermore, a scale is provided at the position of the first chute corresponding to the first bracket, and a pointer cooperating with the scale is provided on each connecting block. A bolt is rotatably arranged on the connecting block, and the bolt is threadedly connected with the second bracket.
[0012] Furthermore, a limiting assembly for fixing the bolt is provided on the connecting block. The limiting assembly includes a gear arranged on the bolt below the connecting block, a connecting plate arranged on the side wall of the connecting block, a sliding plate slidably arranged on the connecting plate, a limiting plate arranged at the upper end of the sliding plate, and teeth arranged on the sliding plate below the connecting plate corresponding to the side wall of the gear. The teeth are meshed with the gear.
[0013] Furthermore, a convex block is provided on the side wall of the sliding plate below the connecting plate, and a spring is provided between the convex block and the connecting plate.
[0014] A battery pole piece rolling machine with a foil rolling wheel of the present utility model has the following advantages:
[0015] 1. By providing a foil rolling device, the present utility model can pre-roll the empty foil part on the pole piece before the pole piece is rolled, so that the empty foil part of the pole piece is rolled and extended. Then, the foil of the coating part is rolled by the pole piece rolling device, thereby preventing wrinkles from being generated after the battery pole piece is rolled.
[0016] 2. By means of a lifting device, the present utility model can adjust the distance between the first pressing roller and the first supporting roller. At the same time, the second bracket in the lifting device is connected with the connecting block through a bolt. When the lifting device adjusts the first pressing roller, if it causes the first pressing roller to be inclined relative to the first supporting roller, the bolt can be used to adjust it so that the first supporting roller and the first pressing roller are kept in a horizontal state.
[0017] 3. By providing a limiting assembly for fixing the bolt on the connecting block, the present utility model can prevent the bolt from rotating due to the vibration generated during the operation of the rolling machine, effectively improving the distance stability between the first pressing roller and the first supporting roller. Description of the Drawings
[0018] Figure 1 Schematic structural diagram of a battery pole piece rolling press with a foil roller for the present utility model;
[0019] Figure 2 Schematic diagram of the distance adjustment component, guide frame, slider and mounting frame of the present utility model;
[0020] Figure 3 Schematic diagram of the scale and pointer of the present utility model;
[0021] Figure 4 Schematic diagram of the limit component of the present utility model.
[0022] Explanation of the markings in the figure:
[0023] 1. Base; 2. First bracket; 21. First chute; 3. Pole piece rolling device; 31. First support roller; 32. First pressure roller; 33. First motor; 4. Foil rolling device; 41. Arm; 42. Second support roller; 43. Guide frame; 44. Mounting frame; 45. Second pressure roller; 5. Lifting device; 51. Second bracket; 52. First electric push rod; 53. Connecting block; 6. Distance adjustment component; 61. Fixed block; 62. Forward and reverse threaded rod; 63. Second motor; 7. Second electric push rod; 8. Reinforcing plate; 9. Scale; 10. Pointer; 11. Bolt; 12. Limit component; 121. Gear; 122. Connecting plate; 123. Sliding plate; 124. Limiting plate; 125. Teeth; 13. Protrusion; 14. Spring; 15. Slider; 151. Second chute. Detailed implementation manners
[0024] In order to better understand the purpose, structure and function of the present utility model, the following further describes in detail a battery pole piece rolling press with a foil roller for the present utility model with reference to the accompanying drawings.
[0025] As Figures 1 to 4 shown, a battery pole piece rolling press with a foil roller for the present utility model includes a base 1, on which a first bracket 2 is provided, and a pole piece rolling device 3 for rolling the pole piece and a foil rolling device 4 for rolling the empty foil part of the pole piece are provided inside the first bracket 2. The foil rolling device 4 is located in front of the pole piece rolling device 3 so that before the rolling press rolls the pole piece, the foil rolling device 4 rolls the empty foil part of the pole piece to prevent wrinkles from occurring in the empty foil part of the pole piece after the pole piece rolling device 3 rolls the pole piece.
[0026] Among them, the pole piece rolling device 3 includes a first support roller 31 and a first pressing roller 32 rotatably arranged in the first bracket 2 through a rotating shaft. The first support roller 31 is located directly above the first pressing roller 32, and there is a gap for rolling the pole piece between the first support roller 31 and the first pressing roller 32. A first motor 33 electrically connected to an external power supply is provided on the outer wall of the first bracket 2, and the first motor 33 is connected to the rotating shaft on one side of the first support roller 31. The first motor 33 drives the first support roller 31 to rotate through the connected rotating shaft. Then, the pole piece is inserted into the rolling gap between the first support roller 31 and the first pressing roller 32. The first support roller 31 drives the first pressing roller 32 to rotate through the pole piece, so that the pole piece in the rolling gap can be rolled and passed through.
[0027] As Figure 1 and Figure 2 shown, the foil rolling device 4 for rolling the empty foil part of the pole piece includes a guide frame 43 arranged on the first bracket 2. An installation frame 44 is provided on the guide frame 43. A second pressing roller 45 is rotatably arranged in the installation frame 44, and the inner end of the second pressing roller 45 is flush with the coating edge on the pole piece. At the same time, arms 41 are symmetrically arranged on the first bracket 2 below the second pressing roller 45 with the center of the first bracket 2 as the center. A second support roller 42 is rotatably arranged between the two arms 41 through a rotating shaft. The highest point of the second support roller 42 is flush with the highest point of the first support roller 31. And there is a rolling gap for passing the empty foil of the pole piece between the second support roller 42 and the second pressing roller 45. When rolling the pole piece, first pass the empty foil part of the pole piece through the gap between the second support roller 42 and the second pressing roller 45, then pass the pole piece through the rolling gap between the first support roller 31 and the first pressing roller 32, and then start the pole piece rolling device 3 to roll the pole piece. After the empty foil part of the pole piece is rolled by the foil rolling device 4 and then rolled by the pole piece rolling device 3, the problem of wrinkles on the pole piece after rolling is effectively prevented.
[0028] To facilitate rolling of pole pieces with different thicknesses, a lifting device 5 for adjusting the height of the first pressing roller 32 is provided on the first bracket 2. The lifting device 5 includes a first electric push rod 52 arranged on the first bracket 2 and electrically connected to an external power supply. A second bracket 51 in a shape is provided on the first electric push rod 52. At the same time, connection blocks 53 are slidably arranged on the two vertical plates of the first bracket 2, and a second sliding groove 151 for the connection blocks 53 to slide is opened on the first bracket 2. And the rotating shafts of the first pressing roller 32 are rotatably connected to the corresponding connection blocks 53. The bottom ends of the two vertical plates of the second bracket 51 are connected to the corresponding connection blocks 53.
[0029] Preferably, a scale 9 is provided at the position of the first support 2 corresponding to the first chute 21, and pointers 10 cooperating with the scale 9 are provided on each connecting block 53. A bolt 11 is rotatably provided on the connecting block 53, and the bolt 11 is in threaded connection with the second support 51. When the height of the first pressing roller 32 is adjusted by the lifting device 5 and the distance between the two ends of the first pressing roller 32 relative to the first supporting roller 31 is unevenly adjusted, the bolt 11 can be used for re-adjustment, and through the cooperation between the pointer 10 on the connecting block 53 and the scale 9 on the first support 2, the first pressing roller 32 and the first supporting roller 31 are kept parallel, so that the force on the pole piece during rolling is more uniform.
[0030] To prevent the bolt 11 from rotating due to the vibration generated during the operation of the rolling machine, a limiting component 12 for fixing the bolt 11 is provided on the connecting block 53. The limiting component 12 includes a gear 121 provided on the bolt 11 below the connecting block 53, a connecting plate 122 provided on the side wall of the connecting block 53, a sliding plate 123 slidably provided on the connecting plate 122, a limiting plate 124 provided at the upper end of the sliding plate 123, and teeth 125 provided on the sliding plate 123 below the connecting plate 122 corresponding to the side wall of the gear 121. The teeth 125 are engaged with the gear 121. When the bolt 11 needs to be adjusted, a wrench can be sleeved on the nut of the bolt 11. When the wrench is sleeved on the nut, the handle will drive the teeth 125 provided thereon to move upward through the sliding plate 123, so that the teeth 125 are disengaged from the engagement with the gear 121, and then the bolt 11 can be rotated using the wrench. To facilitate the automatic reset of the sliding plate 123 after the handle is removed from the nut, a convex block 13 is provided on the side wall of the sliding plate 123 below the connecting plate 122, and a spring 14 is provided between the convex block 13 and the connecting plate 122.
[0031] Of course, in order to adjust the rolling gap between the second supporting roller 42 and the second pressing roller 45 to match the rolling gap between the first supporting roller 31 and the first pressing roller 32, a slider 15 is provided on the guide frame 43. The mounting frame 44 is located below the slider 15, and the mounting frame 44 and the slider 15 are connected by a second electric push rod 7 electrically connected to an external power supply. Specifically, when the first electric push rod 52 is started, the first electric push rod 52 drives the connecting block 53 connected thereto to move through the second support 51, and the first pressing roller 32 connected to the connecting block 53 by a rotating shaft also moves, thereby realizing the adjustment of the rolling gap between the first pressing roller 32 and the first supporting roller 31. The rolling gap between the second supporting roller 42 and the second pressing roller 45 can be adjusted by starting the second electric push rod 7, and the second electric push rod 7 drives the second pressing roller 45 to move through the mounting frame 44, so as to achieve the purpose of adjusting the rolling gap between the second supporting roller 42 and the second pressing roller 45 to match the rolling gap between the first supporting roller 31 and the first pressing roller 32. To improve the connection stability of the mounting frame 44 relative to the slider 15, a reinforcing plate 8 is provided on the mounting frame 44, and the reinforcing plate 8 and the slider 15 are slidably arranged. For exampleFigure 2 As shown, a second chute 151 for the reinforcing plate 8 to slide is provided on the slider 15.
[0032] As another preference, two sliders 15 are provided on the guide frame 43, and the two sliders 15 are slidably arranged with the guide frame 43. A distance adjusting component 6 for adjusting the distance between the two sliders 15 is provided on the guide frame 43. The distance between the two sliders 15 is adjusted through the distance adjusting component 6 to adapt to the rolling of the empty foil part on the pole pieces with different widths. Specifically, the distance adjusting component 6 includes two fixing blocks 61 located on the top surface of the guide frame 43 outside the two sliders 15. A forward and reverse threaded rod 62 is rotatably arranged between the two fixing blocks 61. The forward and reverse threaded rod 62 penetrates through the two sliders 15 and is threadedly connected with the sliders 15. Among them, the two sliders 15 are respectively threadedly connected with two sections of threads on the forward and reverse threaded rod 62, so that when the forward and reverse threaded rod 62 rotates, the two sliders 15 threadedly connected with the forward and reverse threaded rod 62 move relatively. A second motor 63 connected to an external power supply is provided at one end of the guide frame 43, and the second motor 63 is connected to the forward and reverse threaded rod 62. The second motor 63 drives the forward and reverse threaded rod 62, so that the two sliders 15 threadedly connected to the forward and reverse threaded rod 62 move relatively, achieving the purpose of moving the mounting frame 44 connected to the two sliders 15 through the second electric push rod 7 and the second pressing roller 45 arranged thereon, and enabling the two second pressing rollers 45 to better correspond to the empty foil part on the pole piece.
[0033] Usage method: According to the size of the empty foil part on the pole piece, start the distance adjusting component 6 to adjust the distance between the foil rolling devices 4 connected to the sliders 15 to an appropriate position, and then start the second electric push rod 7 to adjust the rolling distance between the second pressing roller 45 and the second supporting roller 42 on the mounting frame 44 to an appropriate height. At the same time, start the lifting device 5 to adjust the rolling distance between the first pressing roller 32 and the first supporting roller 31 to an appropriate height. Then, insert the empty foil part of the pole piece into the rolling gap between the second pressing roller 45 and the second supporting roller 42, and insert the pole piece into the rolling gap between the first pressing roller 32 and the first supporting roller 31. Start the first motor 33, and the first motor 33 drives the first supporting roller 31 to rotate, and the rolling work of the pole piece can be achieved.
[0034] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.
Claims
1. A battery pole sheet rolling machine with a foil rolling wheel, characterized in that: The invention comprises a base (1), a first bracket (2) is provided on the base (1), and a pole piece rolling device (3) for rolling the pole piece and a foil material rolling device (4) for rolling the empty foil part of the pole piece are provided on the first bracket (2); The pole piece rolling device (3) comprises a first support roller (31) and a first pressing roller (32) which are arranged in a first bracket (2) and are rotated by a rotating shaft, and a first motor (33) which is arranged on the outer wall of the first bracket (2), and the first motor (33) is connected to the rotating shaft of the first support roller (31); The foil rolling device (4) comprises a guide frame (43) arranged on a first bracket (2), a mounting frame (44) being arranged on the guide frame (43), a second pressing roller (45) being rotatably arranged in the mounting frame (44), a support arm (41) being arranged on the first bracket (2) below the second pressing roller (45) and symmetrically about the center of the first bracket (2), and a second supporting roller (42) being rotatably arranged between the two support arms (41).
2. The battery pole sheet rolling machine with a foil rolling wheel according to claim 1, characterized in that: The first bracket (2) is provided with a lifting device (5) for adjusting the height of the first pressing roller (32), and the lifting device (5) comprises a first electric push rod (52) provided on the first bracket (2), and a second bracket (51) is provided on the first electric push rod (52); The connecting block (53) is slidably arranged on the first bracket (2), and a second sliding groove (151) is provided on the first bracket (2) for the connecting block (53) to slide. Each rotating shaft of the first pressing roller (32) is rotatably connected to its corresponding connecting block (53), and the second bracket (51) is connected to the connecting block (53).
3. The battery pole sheet rolling machine with foil rolling wheels according to claim 2, characterized in that: The guide frame (43) is provided with a slide block (15), the mounting frame (44) is located below the slide block (15), and the mounting frame (44) and the slide block (15) are connected via a second electric push rod (7).
4. A battery pole sheet rolling machine with a foil rolling wheel according to any one of claims 1 to 3, characterized in that: The mounting frame (44) is provided with a reinforcing plate (8), and the reinforcing plate (8) and the sliding block (15) are slidably arranged, and the sliding block (15) is provided with a second sliding groove (151) for the reinforcing plate (8) to slide.
5. A battery pole sheet rolling machine with a foil rolling wheel according to claim 3, It is characterized by: There are two sliders (15) on the guide frame (43), and the guide frame (43) and the sliders (15) are slidably arranged. The guide frame (43) is provided with a distance adjustment component (6) for adjusting the distance between the two sliders (15), and the distance adjustment component (6) comprises two fixed blocks (61) arranged on the guide frame (43) and located outside the two sliders (15), and a forward and reverse threaded rod (62) is rotatably arranged between the two fixed blocks (61), the forward and reverse threaded rod (62) passes through the two sliders (15) and is threadedly connected to the sliders (15), and a second motor (63) is arranged on the guide frame (43), and the second motor (63) is connected to the forward and reverse threaded rod (62).
6. The battery pole sheet rolling machine with foil rolling wheel according to claim 1, characterized in that ； The first bracket (2) is provided with a scale (9) corresponding to the position of the first slide groove (21), and each connecting block (53) is provided with a pointer (10) that matches the scale (9); A bolt (11) is rotatably provided on the connecting block (53), and the bolt (11) is threadedly connected to the second bracket (51).
7. A battery pole sheet rolling machine with a foil rolling wheel according to claim 6, characterized in that; The connection block (53) is provided with a limiting assembly (12) for fixing the bolt (11), and the limiting assembly (12) comprises a gear (121) provided on the bolt (11) and below the connection block (53), a connection plate (122) provided on a side wall of the connection block (53), a sliding plate (123) slidably provided on the connection plate (122), a limiting plate (124) is provided at the upper end of the sliding plate (123), and teeth (125) are provided on the sliding plate (123) and on the side wall of the gear (121) below the connection plate (122), and the teeth (125) are meshed with the gear (121).
8. The battery pole sheet rolling machine with foil rolling wheels according to claim 7, characterized in that: The sliding plate (123) is located below the connecting plate (122) and has a protrusion (13) on its side wall, and a spring (14) is provided between the protrusion (13) and the connecting plate (122).