Lithium ion battery pole piece slitting device

Abstract

The utility model discloses a lithium ion battery pole piece slitting device which comprises a frame base, the top of the frame base is fixedly connected with a shaft frame, a roller shaft is rotationally erected above the shaft frame, the upper left side of the roller shaft is in transmission with a battery pole piece belt in a matched mode, and the lower middle portion of the left side of the frame base is fixedly connected with a protective shell sleeve. A rotating wheel is erected on the inner side of the protective shell sleeve, a plurality of slitting blades are fixed to the outer side of the rotating wheel in an annular array mode, a rotating shaft is fixedly connected to the inner side of the rotating wheel, ring sleeves are rotationally matched with the outer side of the rotating shaft in a front-back symmetrical mode, and the right sides of the ring sleeves are fixedly connected with the protective shell sleeve. The rear end of the rotating shaft is matched with a servo motor, continuous constant-speed shearing operation can be carried out on the battery pole piece belt, the problem that the battery pole piece belt is wrinkled due to movement interference is avoided, continuous operation can be carried out, and the slitting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion batteries, specifically to a lithium-ion battery electrode cutting device. Background Technology

[0002] Lithium-ion battery electrodes are the active material carriers of the positive and negative electrodes of the battery. They are mainly composed of a matrix, active material, binder, and conductive agent. The main goal of electrode design is to ensure that the active material can effectively participate in the electrochemical reaction while realizing the transmission and collection of current, so as to ensure the overall performance of the battery. The lithium-ion batteries made from these electrodes are high-capacity, long-life, and environmentally friendly batteries with many advantages and are widely used in the field of portable electronic products.

[0003] When manufacturing lithium-ion batteries for mobile phones, lithium battery electrodes need to be cut into corresponding sizes. Conventional cutting equipment often uses rollers to continuously unfold and extend the produced battery electrode strips, and then cut them along the extension path. However, since battery electrodes are often stored in a coiled state after production, they are not easy to keep horizontal during the unfolding process, and slight bending deformation will occur. This results in the surface of the cut battery electrodes not being flat enough, which affects subsequent manufacturing. In addition, existing cutting devices often cut repeatedly on the same plane, and there is a certain degree of motion interference between them and the uniformly extended battery electrode strips, which can easily lead to wrinkles caused by front and rear compression. Utility Model Content

[0004] The purpose of this invention is to provide a lithium-ion battery electrode cutting device that can perform continuous and uniform speed cutting of battery electrode strips and avoid the problem of wrinkles in the battery electrode strips caused by motion interference. It can also perform uninterrupted continuous operation and speed up the cutting efficiency.

[0005] To achieve the above objectives, a lithium-ion battery electrode slitting device is provided, comprising: a frame; a shaft fixedly connected to the top of the frame; a roller rotatably mounted above the shaft; an auxiliary rotating shaft rotatably fitted into the top left side of the frame; the auxiliary rotating shaft, the roller, and the left side of the frame are all vertically aligned; a battery electrode strip is driven to the upper left side of the roller; a multi-stage bearing seat is mounted on the upper left side of the frame; several pressure rollers are rotatably mounted at equal intervals on the inner side of the multi-stage bearing seat; the right side of each pressure roller is pressed against and adhered to the battery electrode strip; several electrically operated telescopic rods are symmetrically fixed to the front and rear sides of the multi-stage bearing seat; a clamping plate is fixedly connected to the right end of each electric telescopic rod; the opposite sides of each clamping plate are fixedly connected to the frame; a protective shell is fixedly connected to the lower left side of the frame; and a rotating wheel is mounted on the inner side of the protective shell. The outer side of the rotating wheel is fixed with several slitting blades in a circular array. The inner side of the rotating wheel is fixedly connected to a rotating shaft. The outer side of the rotating shaft is symmetrically fitted with rings that rotate back and forth. The right side of each ring is fixedly connected to a protective shell. The rear end of the rotating shaft is fitted with a servo motor. The front side of the servo motor is fixedly connected to the ring. The right side of the slitting blade located on the right side of the rotating wheel is in contact with the left side of the frame. The battery electrode strip hangs down naturally by gravity and slides downward at a uniform speed along the roller shaft, perpendicular to one side of the frame. Then, several pressure rollers on the multi-stage bearing seat roll flatten its side. Finally, the rotating wheel and the slitting blades in the circular array perform continuous and uniform cutting of the battery electrode strip, avoiding the problem of wrinkles in the battery electrode strip caused by motion interference. It can also perform uninterrupted continuous operation and speed up the cutting efficiency.

[0006] According to the lithium-ion battery electrode cutting device, a sliding film is attached to and covered on the left side of the holder, and the battery electrode slides up and down with the sliding film corresponding to the right side of the holder. This reduces the relative frictional loss between the battery electrode and the holder during sliding.

[0007] According to the lithium-ion battery electrode slitting device, a wear-resistant pad is provided on the right side of the rotary wheel, and the wear-resistant pad is fixedly connected to the frame to the right. The slitting line between the slitting blade and the frame is reinforced to prevent deformation and ensure complete slitting.

[0008] According to the lithium-ion battery electrode slitting device, a first pad is fixedly connected to the bottom of the frame, a second pad is mounted on the left side of the first pad, and a conveyor belt is mounted above the opposite side of the first and second pads. Pulleys are rotatably fitted to the inner sides of both ends of the conveyor belt, and bushings are rotatably fitted to the left and right ends of each pulley. The bottom of each bushing is fixedly connected to the first and second pads, respectively. The bushing located in front of the second pad is replaced by a drive motor, and the right output end of the drive motor is fixedly connected to the pulley. This facilitates automated and continuous transfer of the slitted battery electrodes, thus maintaining continuous material output.

[0009] According to the lithium-ion battery electrode cutting device, the outer surface of the conveyor belt is covered with a layer of cushioning tape to protect the cut battery electrodes from falling off.

[0010] According to the lithium-ion battery electrode cutting device, the right side of the frame is symmetrically fixed with supports, and the right side of the supports is fixedly connected with a vertical frame. Shifting the center of gravity to the right helps maintain the vertical stability of the frame.

[0011] According to the lithium-ion battery electrode slitting device, an isolation cover is snapped and fixed on the left side of the protective shell, and observation windows are symmetrically fitted and fixed on the front and rear sides of the isolation cover. This provides isolation and protection for the slitting blades while allowing the user to observe the wear condition of the blades.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the battery electrode strip is naturally lowered by gravity and slides downward at a uniform speed along one side of the frame through a roller. Then, several pressure rollers on a multi-stage bearing seat roll flatten its side. Finally, a rotating wheel is set up to work with a ring array of cutting blades to continuously and uniformly cut the battery electrode strip. This avoids the problem of wrinkles caused by motion interference and enables uninterrupted continuous operation, thus speeding up the cutting efficiency.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the connection structure between the roller shaft and the synchronous pressure roller in a lithium-ion battery electrode slitting device of this utility model;

[0017] Figure 2This is a schematic diagram of the connection structure of the cutting blade in a lithium-ion battery electrode cutting device of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the conveyor belt in a lithium-ion battery electrode cutting device according to the present invention;

[0019] Figure 4 This is an overall schematic diagram of a lithium-ion battery electrode cutting device according to the present invention.

[0020] In the diagram: 1. Frame; 2. Shaft; 3. Roller; 4. Battery electrode belt; 5. Multi-stage bearing seat; 6. Pressure roller; 7. Electric telescopic rod; 8. Clamping plate; 9. Protective shell; 10. Rotary wheel; 11. Slitting blade; 12. Rotating shaft; 13. Ring sleeve; 14. Servo motor; 15. First pad; 16. Second pad; 17. Conveyor belt; 18. Pulley; 19. Shaft sleeve; 20. Drive motor; 21. Buffer belt; 22. Support; 23. Stand; 24. Isolation cover; 25. Observation window. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a lithium-ion battery electrode cutting device, comprising: a frame 1, a shaft frame 2 fixedly connected to the top of the frame 1, a roller 3 rotatably mounted above the shaft frame 2, an auxiliary rotating shaft fitted and rotatably engaged on the top left side of the frame 1, the auxiliary rotating shaft, the roller 3 and the left side of the frame 1 are all vertically aligned, a battery electrode strip 4 is driven on the upper left side of the roller 3, a layer of sliding film is attached to and covered on the left side of the frame 1, the battery electrode strip 4 slides up and down with the sliding film corresponding to the right, so that the side of the battery electrode strip perpendicular to the frame 1 slides downward at a uniform speed.

[0023] A multi-stage bearing seat 5 is mounted on the upper left side of the frame 1. Several pressure rollers 6 are equidistantly mounted on the inner side of the multi-stage bearing seat 5. The right side of the pressure rollers 6 is pressed and adhered to the battery electrode strip 4. Several electric telescopic rods 7 are symmetrically fixed on the front and rear sides of the multi-stage bearing seat 5. Each electric telescopic rod 7 is fixedly connected to a clamping plate 8 at its right end. The opposite sides of the clamping plate 8 are fixedly connected to the frame 1 to roll and flatten the side of the battery electrode strip.

[0024] A protective shell 9 is fixedly connected to the lower left side of the frame 1. A rotating wheel 10 is mounted on the inner side of the protective shell 9. Several cutting blades 11 are fixedly arranged in a circular array on the outer side of the rotating wheel 10. A rotating shaft 12 is fixedly connected to the inner side of the rotating wheel 10. A ring sleeve 13 is symmetrically fitted to the outer side of the rotating shaft 12. The right side of the ring sleeve 13 is fixedly connected to the protective shell 9. A servo motor 14 is fitted to the rear end of the rotating shaft 12. The front side of the servo motor 14 is fixedly connected to the ring sleeve 13. The right side of the cutting blade 11 located on the right side of the rotating wheel 10 is in contact with the left side of the frame 1. A wear-resistant pad is provided on the right side of the rotating wheel 10. The wear-resistant pad is fitted and fixedly connected to the frame 1 to the right. An isolation cover 24 is snapped and fixed on the left side of the protective shell 9. Observation windows 25 are symmetrically fitted and fixed on the front and rear sides of the isolation cover 24. The battery electrode strip is continuously and uniformly sheared to avoid wrinkles caused by motion interference.

[0025] A first pad 15 is fixedly connected to the bottom of the frame 1. A second pad 16 is mounted on the left side of the first pad 15. A conveyor belt 17 is mounted above the opposite side of the first pad 15 and the second pad 16. Pulleys 18 are rotatably fitted on the inner sides of both the front and rear ends of the conveyor belt 17. Bushings 19 are rotatably fitted on both the left and right ends of the pulleys 18. The bottom of the bushings 19 is fixedly connected to the first pad 15 and the second pad 16 respectively. The bushing 19 located in front of the second pad 16 is replaced by a drive motor 20. The right output end of the drive motor 20 is fixedly connected to the pulley 18. A layer of buffer tape 21 is covered on the outer side of the conveyor belt 17 to facilitate the automated continuous transfer of the slit battery electrode sheets, thereby maintaining continuous material output and improving output efficiency.

[0026] Supports 22 are symmetrically fixed on the right side of the frame 1, and uprights 23 are fixedly connected to the right side of the supports 22. This balances the center of gravity, increases the overall bottom support area, and improves the overall stability of the erection.

[0027] Working principle: In this utility model, the battery electrode strip 4 is naturally lowered by gravity and slides downward at a uniform speed along one side of the frame 1 through the roller shaft 3. Then, several pressure rollers 6 on the multi-stage bearing seat 5 roll flatten its side. Finally, a rotating wheel 10 is set up to work with the cutting blades 11 arranged in a ring array to perform continuous and uniform cutting operation on the battery electrode strip 4. This avoids the problem of wrinkles formed on the battery electrode strip 4 due to motion interference and can perform uninterrupted continuous operation, thus speeding up the cutting efficiency.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A lithium-ion battery electrode slitting device, comprising: A frame (1) is characterized in that a shaft frame (2) is fixedly connected to the top of the frame (1), a roller shaft (3) is rotatably mounted above the shaft frame (2), an auxiliary rotating shaft is fitted and rotatably fitted to the top left side of the frame (1), the auxiliary rotating shaft, the roller shaft (3) and the left side of the frame (1) are all vertically aligned, a battery electrode strip (4) is driven to the upper left side of the roller shaft (3), a multi-stage bearing seat (5) is mounted on the upper middle part of the left side of the frame (1), a number of pressure rollers (6) are rotatably fitted to the inner side of the multi-stage bearing seat (5) at equal intervals, the right side of the pressure rollers (6) is pressed and adhered to the battery electrode strip (4), a number of electric telescopic rods (7) are symmetrically fixed to the front and rear sides of the multi-stage bearing seat (5), and a clamping plate (8) is fixedly connected to the right end of each electric telescopic rod (7). The front and rear sides of the card plate (8) are fixedly connected to the frame (1). A protective shell (9) is fixedly connected to the lower left side of the frame (1). A rotating wheel (10) is mounted on the inner side of the protective shell (9). Several cutting blades (11) are fixedly arranged in a ring on the outer side of the rotating wheel (10). A rotating shaft (12) is fixedly connected to the inner side of the rotating wheel (10). A ring sleeve (13) is symmetrically rotated on the outer side of the rotating shaft (12). The right side of the ring sleeve (13) is fixedly connected to the protective shell (9). A servo motor (14) is fitted to the rear end of the rotating shaft (12). The front side of the servo motor (14) is fixedly connected to the ring sleeve (13). The right side of the cutting blade (11) located on the right side of the rotating wheel (10) is in contact with the left side of the frame (1).

2. The lithium-ion battery electrode cutting device as described in claim 1, characterized in that: The left side of the bracket (1) is covered with a sliding film, and the battery electrode strip (4) slides up and down with the sliding film and the bracket (1) to the right.

3. The lithium-ion battery electrode cutting device as described in claim 1, characterized in that: A wear-resistant pad is provided on the right side of the wheel (10), and the wear-resistant pad is fitted and fixedly connected to the frame (1) to the right.

4. The lithium-ion battery electrode cutting device as described in claim 1, characterized in that: The bottom of the frame (1) is fixedly connected to a first pad (15). A second pad (16) is mounted on the left side of the first pad (15). A conveyor belt (17) is mounted above the opposite side of the first pad (15) and the second pad (16). Pulleys (18) are rotatably fitted on the inner sides of both the front and rear ends of the conveyor belt (17). Bushings (19) are rotatably fitted on both the left and right ends of the pulleys (18). The bottom of the bushings (19) is fixedly connected to the first pad (15) and the second pad (16) respectively. The bushing (19) located in front of the second pad (16) is replaced by a drive motor (20). The right output end of the drive motor (20) is fixedly connected to the pulley (18).

5. The lithium-ion battery electrode cutting device as described in claim 4, characterized in that: The outer side of the conveyor belt (17) is covered with a layer of cushioning tape (21).

6. The lithium-ion battery electrode cutting device as described in claim 1, characterized in that: The right side of the frame (1) is symmetrically fixed with supports (22), and the right side of the supports (22) is fixedly connected with a vertical frame (23).

7. The lithium-ion battery electrode cutting device as described in claim 1, characterized in that: An isolation cover (24) is snapped and fixed on the left side of the protective shell (9), and observation windows (25) are symmetrically fitted and fixed on the front and rear sides of the isolation cover (24).

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