Lithium battery pole piece rolling device

Abstract

The utility model discloses a lithium battery pole piece rolling device which comprises a conveying bed, conveying rollers are arranged at the two ends of the interior of the conveying bed, clamping frames are rotationally connected to the two sides of the conveying bed in the conveying direction, a driving piece is fixedly connected to the side face of one clamping frame, and the output end of the driving piece is fixedly connected with the conveying rollers. Front vertical plates are fixed to the left sides of the tops of the clamping frames on the two sides of the conveying bed correspondingly, front sliding grooves are formed in the opposite side faces of the two front vertical plates correspondingly, a micro motor is fixedly connected to the top end of the inner wall of one front sliding groove, and a lifting lead screw is fixed to the output end of the micro motor. The end, away from the micro motor, of the lifting screw rod is connected with the bottom end of the inner wall of the front sliding groove, a sliding rod is fixed into the other front sliding groove, the lifting screw rod and the sliding rod are sleeved with front sliding blocks, the front sliding blocks are slidably connected with the inner wall of the front sliding groove, and a lower pressing roller is fixed between the two front sliding blocks. And rolling of the pole pieces with different thicknesses is achieved, and the rolling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery electrode sheets, and particularly relates to a rolling device for lithium battery electrode sheets. Background Art

[0002] An electrode sheet refers to the intermediate component between the positive and negative electrode materials in a battery. Its main function is to form a complete circuit by electrically connecting the positive and negative electrode materials, enabling users to generate positive and negative currents (i.e., electrical energy) on this basis, thereby generating a certain power supply. The lithium battery electrode sheet process is the manufacturing method of lithium battery electrode sheets, which is a method of manufacturing electrode sheets through steps such as material crushing, cutting, welding, and packaging.

[0003] In the prior art, the rolling process can keep the surface of the electrode sheet smooth and flat, thereby preventing potential battery short - circuit hazards caused by burrs on the surface of the electrode sheet piercing the separator and improving the energy density of the battery. Since the sizes of different models of lithium batteries are inconsistent, their corresponding electrode sheets are also inconsistent. However, currently, the rolling device cannot adjust the height of the pressure roller according to the thickness of the electrode sheet, which will reduce the rolling efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rolling device for lithium battery electrode sheets to solve the problem that since the sizes of different models of lithium batteries are inconsistent, their corresponding electrode sheets are also inconsistent, but currently the rolling device cannot adjust the height of the pressure roller according to the thickness of the electrode sheet, which will reduce the rolling efficiency.

[0005] To achieve the above - mentioned purpose, a rolling device for lithium battery electrode sheets is provided, including a conveying bed. Both ends inside the conveying bed are provided with conveying rollers. Both sides of the conveying bed along the conveying direction are rotatably connected with clamping frames. A driving member is fixedly connected to the side of one of the clamping frames, and the output end of the driving member is fixedly connected to the conveying roller. On the left side of the tops of the clamping frames on both sides of the conveying bed, front vertical plates are fixed. On the opposite sides of the two front vertical plates, front sliding grooves are opened. At the top end of the inner wall of one of the front sliding grooves, a micro - motor is fixedly connected. The output end of the micro - motor is fixed with a lifting lead screw. The end of the lifting lead screw away from the micro - motor is connected to the bottom end of the inner wall of the front sliding groove. A sliding rod is fixed inside the other front sliding groove. Both the lifting lead screw and the sliding rod are sleeved with front sliding blocks, and the front sliding blocks are slidably connected to the inner wall of the front sliding groove. A lower pressure roller is fixed between the two front sliding blocks.

[0006] According to the rolling device for lithium battery electrode sheets, on the right side of the tops of the clamping frames on both sides of the conveying bed, right vertical plates are fixed. On the opposite sides of the two right vertical plates, rear sliding grooves are opened. A side convex plate is slidably connected between the two rear sliding grooves. Horizontally fixed to the bottom of the side convex plate are a plurality of brush pieces, and the overall sizes of the plurality of brush pieces are all the same.

[0007] According to the described lithium battery pole piece rolling device, receiving columns are rotatably connected to the four peripheries of the bottom of the transfer bed, the side wall of the clamping frame is fixedly connected to the side wall of the receiving column, upper support rods are fixed to the bottoms of multiple receiving columns, lower support rods are nested at the bottoms of multiple upper support rods, and bottom plates are fixed to the bottoms of multiple lower support rods.

[0008] According to the described lithium battery pole piece rolling device, screw holes are longitudinally formed in the opposite side surfaces of two right vertical plates, threaded holes are formed in the outer side surface of the side convex plate, the threaded holes and the screw holes have the same diameter, and reinforcing bolts are threadedly connected inside the threaded holes.

[0009] According to the described lithium battery pole piece rolling device, a protective rope is sleeved on the outer surface of the lower pressing roller, and the overall length of the protective rope is the same as the overall length of the lower pressing roller.

[0010] According to the described lithium battery pole piece rolling device, an upper flat plate is arranged at the top of the clamping frame, and the front vertical plate and the right vertical plate are both fixed to the bottom side of the upper flat plate.

[0011] According to the described lithium battery pole piece rolling device, the protective rope is designed with natural rubber material.

[0012] According to the described lithium battery pole piece rolling device, the outer surface of the transfer bed is smoothly arranged.

[0013] The beneficial effects of the above solution: By arranging a right vertical plate, a side convex plate and multiple brush pieces on the right side of the top of the two end clamping frames, it is convenient to transfer the pole piece from the right side, realize the cleaning of the dust on the surface of the pole piece, and then start the micro motor through the controller to drive the lifting screw rod to rotate. Thus, by using the rotation effect of the lifting screw rod, the front slider on one side is driven to slide up and down, and the front slider on the other side will slide up and down along the sliding rod, and further drive the lower pressing roller fixed between the two end front sliders to move up and down, realizing the rolling of pole pieces with different thicknesses and improving the rolling efficiency.

[0014] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0016] Figure 1 It is a schematic front view of the whole of a lithium battery pole piece rolling device of the present utility model;

[0017] Figure 2 It is a schematic rear view of the whole of a lithium battery pole piece rolling device of the present utility model;

[0018] Figure 3 It is an enlarged schematic view of the A position of a lithium battery pole piece rolling device of the present utility model;

[0019] Figure 4 It is an enlarged schematic view of the B position of a lithium battery pole piece rolling device of the present utility model.

[0020] Legend description:

[0021] 1. Conveyor bed; 2. Conveyor roller; 3. Clamping frame; 4. Driving part; 5. Front vertical plate; 6. Front sliding groove; 7. Micro motor; 8. Lifting lead screw; 9. Slide bar; 10. Front slider; 11. Lower pressing roller; 12. Right vertical plate; 13. Rear sliding groove; 14. Side convex plate; 15. Brush piece; 16. Bearing column; 17. Upper support rod; 18. Lower support rod; 19. Bottom plate; 20. Screw hole; 21. Threaded hole; 22. Reinforcing bolt; 23. Protection rope; 24. Upper flat plate. Specific implementation manners

[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0023] Refer to Figures 1-4, in an embodiment of the present utility model, a lithium battery electrode sheet rolling device includes a conveying bed 1. At both ends inside the conveying bed 1, conveying rollers 2 are provided. On both sides of the conveying bed 1 along the conveying direction, clamping frames 3 are rotatably connected. On the side of one clamping frame 3, a driving member 4 is fixedly connected. The output end of the driving member 4 is fixedly connected to the conveying roller 2. On the left side of the top of the clamping frames 3 on both sides of the conveying bed 1, front vertical plates 5 are fixed. On the opposite sides of the two front vertical plates 5, front sliding grooves 6 are provided. At the top end of the inner wall of one front sliding groove 6, a micro motor 7 is fixedly connected. The output end of the micro motor 7 is fixed with a lifting screw rod 8. The end of the lifting screw rod 8 away from the micro motor 7 is connected to the bottom end of the inner wall of the front sliding groove 6. A sliding rod 9 is fixed inside the other front sliding groove 6. Both the lifting screw rod 8 and the sliding rod 9 are sleeved with front sliding blocks 10. The front sliding blocks 10 are slidably connected to the inner wall of the front sliding groove 6. A pressing roller 11 is fixed between the two front sliding blocks 10. In the prior art, the rolling process can keep the surface of the electrode sheet smooth and flat, improving the energy density of the battery. Since the sizes of lithium batteries of different models are inconsistent, their corresponding electrode sheets are also inconsistent. However, currently, the rolling device cannot adjust the height of the pressing roller according to the thickness of the electrode sheet, which will reduce the rolling efficiency. For such problems, front sliding grooves 6 can be provided on the opposite sides of the two front vertical plates 5 at both ends. At the top end of the inner wall of one front sliding groove 6, a micro motor 7 is rotatably connected. The micro motor 7 is controlled by a controller to start, driving the lifting screw rod 8 to rotate. Thus, by using the rotation effect of the lifting screw rod 8, one side of the front sliding block 10 is driven to slide up and down, and the other side of the front sliding block 10 will slide up and down along the sliding rod 9. Furthermore, the pressing roller 11 fixed between the two front sliding blocks 10 at both ends is driven to move up and down, realizing the rolling of electrode sheets of different thicknesses and improving the rolling efficiency.

[0024] On the right side of the top of the clamping frames 3 on both sides of the conveying bed 1, right vertical plates 12 are fixed. On the opposite sides of the two right vertical plates 12, rear sliding grooves 13 are provided. A side convex plate 14 is slidably connected between the two rear sliding grooves 13. Horizontally fixed at the bottom of the side convex plate 14 are a plurality of brush pieces 15. The overall sizes of the plurality of brush pieces 15 are all the same. By providing the right vertical plates 12, the side convex plate 14 and the plurality of brush pieces 15 on the right side of the top of the clamping frames 3 at both ends, it is convenient to convey the electrode sheet from the right side, realizing the cleaning of the dust on the surface of the electrode sheet and improving the rolling efficiency. At the four corners of the bottom of the conveying bed 1, receiving columns 16 are rotatably connected. A fixed connection is provided between the side wall of the clamping frame 3 and the side wall of the receiving column 16. At the bottom of the plurality of receiving columns 16, upper support rods 17 are fixed. At the bottom of the plurality of upper support rods 17, lower support rods 18 are nested. At the bottom of the plurality of lower support rods 18, a bottom plate 19 is fixed. By using the upper support rods 17 and the lower support rods 18, it is convenient to buffer the overall device, avoiding affecting the stability of the overall device during rolling.

[0025] On the opposite sides of the two right vertical plates 12, screw holes 20 are longitudinally formed. On the outer side of the side convex plate 14, a threaded hole 21 is formed. The threaded hole 21 has the same diameter as the screw hole 20. A reinforcing bolt 22 is threadedly connected inside the threaded hole 21. By forming the screw hole 20 and the threaded hole 21 and arranging the reinforcing bolt 22, it is convenient to fix the side convex plate 14 when it is moved up and down. A protective rope 23 is sleeved on the outer surface of the lower pressing roller 11. The overall length of the protective rope 23 is the same as the overall length of the lower pressing roller 11. By sleeving the protective rope 23, the lithium battery electrode sheet is prevented from being worn during rolling.

[0026] On the top of the clamping frame 3, an upper flat plate 24 is provided. The front vertical plate 5 and the right vertical plate 12 are both fixed to the bottom side of the upper flat plate 24, achieving the effect of protecting the front vertical plate 5 and the right vertical plate 12. The protective rope 23 is designed with natural rubber material to improve the elastic effect of the protective rope 23. The outer surface of the conveying bed 1 is smoothly arranged to prevent the lithium battery electrode sheet from being damaged during conveying.

[0027] Working principle: First, by arranging the right vertical plate 12, the side convex plate 14 and a plurality of brush pieces 15 on the right side of the top of the two ends of the clamping frame 3, it is convenient to transmit the electrode sheet from the right side and clean the dust on the surface of the electrode sheet. Then, front sliding grooves 6 are formed on the opposite sides of the two ends of the front vertical plates 5. At the top end of the inner wall of one end of the front sliding groove 6, a micro motor 7 is rotatably connected. The micro motor 7 is controlled by a controller to start, driving the lifting screw rod 8 to rotate. Thus, by using the rotation effect of the lifting screw rod 8, the front slider 10 on one side is driven to slide up and down, and the front slider 10 on the other side will slide up and down along the sliding rod 9. Furthermore, the lower pressing roller 11 fixed between the two ends of the front slider 10 is driven to move up and down, realizing the rolling of electrode sheets with different thicknesses and improving the rolling efficiency.

[0028] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which the present invention pertains, various changes can be made without departing from the purpose of the present invention.

Claims

1. A lithium battery pole piece rolling device, comprising: A conveyor bed (1), characterized in that conveyor rollers (2) are provided at both ends of the conveyor bed (1), both sides of the conveyor bed (1) along the conveying direction are rotatably connected to clamping frames (3), a side of the clamping frame (3) is fixedly connected to a driving member (4), and an output end of the driving member (4) is fixedly connected to the conveyor roller (2); A front vertical plate (5) is fixed to the left side of the top of the clamping frame (3) on both sides of the conveyor bed (1), and front slide grooves (6) are opened on the opposite sides of the two front vertical plates (5). A micro motor (7) is fixedly connected to the top of the inner wall of one front slide groove (6), and a lifting screw rod (8) is fixed to the output end of the micro motor (7). The end of the lifting screw rod (8) away from the micro motor (7) is connected to the bottom end of the inner wall of the front slide groove (6). A slide rod (9) is fixed inside the other front slide groove (6), and the lifting screw rod (8) and the slide rod (9) are both sleeved with a front slider (10) on the outside. The front slider (10) is slidably connected to the inner wall of the front slide groove (6), and a lower pressure roller (11) is fixed between the two front sliders (10).

2. A lithium battery pole piece rolling device according to claim 1, characterized in that: A right vertical plate (12) is fixed to the right side of the top of the clamping frame (3) on both sides of the conveyor bed (1), and rear sliding grooves (13) are provided on the opposite sides of the two right vertical plates (12). A side convex plate (14) is slidably connected between the two rear sliding grooves (13), and a plurality of brush plates (15) are fixed to the bottom of the side convex plate (14) in the transverse direction, and the overall size of the plurality of brush plates (15) is the same.

3. A lithium battery pole piece rolling device according to claim 1, characterized in that: The bottom of the conveyor bed (1) is rotatably connected to receiving columns (16) on all sides, the side walls of the clamping frame (3) are fixedly connected to the side walls of the receiving columns (16), the bottoms of multiple receiving columns (16) are fixed with upper support rods (17), the bottoms of multiple upper support rods (17) are nested with lower support rods (18), and the bottoms of multiple lower support rods (18) are fixed with bottom plates (19).

4. A lithium battery pole piece rolling device according to claim 2, characterized in that: The two right vertical plates (12) have screw holes (20) formed on opposite sides in the longitudinal direction, and the side convex plate (14) has a grooved hole (21) formed on the outer side. The grooved hole (21) has the same diameter as the screw hole (20), and a reinforcing bolt (22) is threadedly connected inside the grooved hole (21).

5. A lithium battery pole piece rolling device according to claim 1, characterized in that: The outer surface of the lower pressing roller (11) is sleeved with a protective rope (23), and the overall length of the protective rope (23) is consistent with the overall length of the lower pressing roller (11).

6. A lithium battery pole piece rolling device according to claim 1, characterized in that: An upper flat plate (24) is provided on the top of the clamp frame (3), and the front vertical plate (5) and the right vertical plate (12) are both fixed to the bottom side of the upper flat plate (24).

7. A lithium battery pole piece rolling device according to claim 5, characterized in that: The protection rope (23) is designed using natural rubber material.

8. A lithium battery pole piece rolling device according to claim 1, characterized in that: The outer surface of the conveyor bed (1) is arranged to be smooth.

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