Tension control device for winding lithium battery cell

Abstract

The utility model relates to the field of lithium battery processing, and discloses a tension control device for winding a lithium battery cell, which comprises a winding machine, the surface of the winding machine is rotatably connected with a winding roller, the surface of the winding machine is rotatably connected with a guide roller, the inner wall of the winding roller is fixedly connected with a supporting plate, and the supporting plate is fixedly connected with a winding roller. A bidirectional electric push rod is fixedly connected to the side wall of the supporting plate, an adjusting plate is fixedly connected to the output end of the bidirectional electric push rod, a through hole is formed in the surface of the winding roller in a penetrating mode, a guide ring is arranged on the outer wall of the adjusting plate, a sliding groove is formed in the outer wall of the adjusting plate, and a sliding rod is fixedly connected to the inner wall of the sliding groove. According to the winding device, the bidirectional electric push rod, the adjusting plate, the guide ring and other structures are arranged, so that the tension can be controlled and adjusted when the battery cell is wound, the battery cell can be guided and limited in the winding process, the compactness and the quality of the battery cell are ensured, and the winding effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery processing, and in particular to a tension control device for winding lithium battery cells. Background Technology

[0002] The winding process is a mature manufacturing technology that enables continuous production with high efficiency. By winding the positive electrode, separator, and negative electrode into a tight cylindrical or square structure, the winding process can effectively utilize the internal space of the battery while maintaining structural stability. The winding machine plays a crucial role in the manufacturing of lithium battery cells, ensuring not only the safety and performance of the battery but also improving production efficiency and product quality. It is an indispensable key piece of equipment in the lithium battery manufacturing process.

[0003] A search revealed Chinese Patent Publication No. CN209747669U, which discloses a winding device for polymer lithium battery cells. This device comprises a clamping device and a guiding device, with a limiting device. A clamping device is fixed to one side of the winding machine, and a guiding device is fixed to the other side. This winding device restricts the movement of the battery cells before winding and clamps the battery cell roll after winding. This improves the winding quality and reduces the correction time after misalignment, thus increasing the working efficiency of the winding machine. A rubber ring provides cushioning to protect the edges of the battery cell roll, and the outer surface of the turntable is engraved with anti-slip textures to increase friction between the hand and the turntable, facilitating the adjustment of the guiding device.

[0004] In the above technical solution, the clamping device and the guiding device are used to clamp the battery cell during winding. However, the lack of tension adjustment and control during battery cell winding makes it impossible to adjust and control the tightness of the winding, resulting in a reduction in the winding effect. Therefore, a tension control device for winding lithium battery cells is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a tension control device for winding lithium battery cells, which aims to improve the problem that the existing tension control device for winding lithium battery cells cannot provide tension control during the winding process, resulting in difficulty in ensuring winding tightness and thus reducing the winding effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a tension control device for winding lithium battery cells, comprising a winding machine, a winding roller rotatably connected to the surface of the winding machine, a guide roller rotatably connected to the surface of the winding machine, a support plate fixedly connected to the inner wall of the winding roller, a bidirectional electric push rod fixedly connected to the side wall of the support plate, an adjusting plate fixedly connected to the output end of the bidirectional electric push rod, a through hole through the surface of the winding roller, a guide ring provided on the outer wall of the adjusting plate, a sliding groove provided on the outer wall of the adjusting plate, a sliding rod fixedly connected to the inner wall of the sliding groove, a slider slidably connected to the outer wall of the sliding rod, a fixing spring fixedly connected to the side wall of the slider, and a tension control auxiliary component provided on the surface of the winding machine.

[0007] As a further description of the above technical solution:

[0008] The through hole is fitted onto the outer wall of the output end of the bidirectional electric push rod.

[0009] As a further description of the above technical solution:

[0010] The fixing spring is sleeved on the outer wall of the slide rod, and the end of the fixing spring away from the slide block is fixedly connected to the inner wall of the slide groove.

[0011] As a further description of the above technical solution:

[0012] The tension control auxiliary component includes an electric cylinder, the output end of which is fixedly connected to a mounting frame, and the inner wall of the mounting frame is rotatably connected to a squeezing roller.

[0013] As a further description of the above technical solution:

[0014] The fixed end of the electric cylinder is fixedly connected to the outer surface of the winding machine.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the slider has a slot, the inner wall of the slot is fixedly connected to a telescopic spring, the end of the telescopic spring is fixedly connected to a pull rod, the inner surface of the guide ring is fixedly connected to an insert block, and the surface of the insert block has a through hole.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the insert is adapted to the inner wall of the slot, and the inner wall of the hole is adapted to the outer wall of the pull rod.

[0019] As a further description of the above technical solution:

[0020] The end of the pull rod near the telescopic spring passes through the slider into the inside of the slot.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by combining a bidirectional electric push rod, an adjusting plate, a guide ring, a slide groove, a fixed spring, a slider, and a tension control auxiliary component, the tension can be controlled and adjusted during the winding of the battery cell, and the battery cell can be guided and limited during the winding process to ensure the compactness and quality of the battery cell and improve the winding effect.

[0023] 2. In this utility model, by providing a slot, a pull rod, a telescopic spring, a plug and a hole, the guide ring can be quickly disassembled from the adjustment plate, making it convenient to remove the wound battery cell, while improving the flexibility of the device and adapting to different production needs. Attached Figure Description

[0024] Figure 1 This is a top view schematic diagram of the main structure of a tension control device for winding lithium battery cells proposed in this utility model;

[0025] Figure 2 This is a side view of the main structure of a tension control device for winding lithium battery cells proposed in this utility model;

[0026] Figure 3 This is a side view of the internal structure of the winding roller of a tension control device for winding lithium battery cells proposed in this utility model.

[0027] Figure 4 This is a schematic diagram showing the separation of the winding roller and guide ring structure of a tension control device for winding lithium battery cells proposed in this utility model;

[0028] Figure 5 This utility model proposes a tension control device for winding lithium battery cells. Figure 4 Enlarged schematic diagram of region A in the middle.

[0029] Legend:

[0030] 1. Winding machine; 2. Winding roller; 3. Guide roller; 4. Support plate; 5. Bidirectional electric push rod; 6. Through hole; 7. Adjusting plate; 8. Guide ring; 9. Slide groove; 10. Slide rod; 11. Slider; 12. Fixed spring; 13. Electric cylinder; 14. Mounting bracket; 15. Extrusion roller; 16. Groove; 17. Tie rod; 18. Telescopic spring; 19. Insert block; 20. Hole. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3 This utility model provides an embodiment of a tension control device for winding lithium battery cells, comprising a winding machine 1, a winding roller 2 rotatably connected to the surface of the winding machine 1, the winding roller 2 being driven to rotate by a drive device inside the winding machine 1 to wind the battery cell, a guide roller 3 rotatably connected to the surface of the winding machine 1, a support plate 4 fixedly connected to the inner wall of the winding roller 2, a bidirectional electric push rod 5 fixedly connected to the side wall of the support plate 4, and an adjusting plate 7 fixedly connected to the output end of the bidirectional electric push rod 5, the adjusting plate 7 being semi-circular in shape and having two... The two sets of adjusting plates 7 are driven by the two output ends of the bidirectional electric push rods 5. The surface of the winding roller 2 is provided with through holes 6. The outer wall of the adjusting plate 7 is provided with guide rings 8. There are four sets of guide rings 8, and the four sets of guide rings 8 are arranged in pairs at the front and rear ends of the two sets of adjusting plates 7. The outer wall of the adjusting plate 7 is provided with a sliding groove 9. The inner wall of the sliding groove 9 is fixedly connected with a sliding rod 10. The outer wall of the sliding rod 10 is slidably connected with a slider 11. The side wall of the slider 11 is fixedly connected with a fixing spring 12. The surface of the winding machine 1 is provided with tension control auxiliary components.

[0033] Reference Figures 2-4 A through hole 6 is fitted on the outer wall of the output end of the bidirectional electric push rod 5. The opening of the through hole 6 facilitates the movement of the adjustment plate 7 controlled by the output end of the bidirectional electric push rod 5. A fixed spring 12 is fitted on the outer wall of the slide rod 10. The end of the fixed spring 12 away from the slider 11 is fixedly connected to the inner wall of the slide groove 9. The elastic properties of the fixed spring 12 make the guide ring 8 always close to the center point of the adjustment plate 7. The side of the guide ring 8 close to the adjustment plate 7 is rounded. The tension control auxiliary component includes an electric cylinder 13. The fixed end of the electric cylinder 13 is fixedly connected to the outer surface of the winding machine 1. The output end of the electric cylinder 13 is fixedly connected to the mounting frame 14. The inner wall of the mounting frame 14 is rotatably connected to the extrusion roller 15. The tension control auxiliary component consists of an electric cylinder 13, a mounting frame 14 and an extrusion roller 15. Two sets of tension control auxiliary components are provided and are distributed in a mirror image with the central axis of the winding roller 2 as the axis of symmetry.

[0034] Reference Figure 5The outer wall of the slider 11 has a slot 16. The inner wall of the slot 16 is fixedly connected to a telescopic spring 18. The end of the telescopic spring 18 is fixedly connected to a pull rod 17. The pull rod 17 is composed of two sets of circular plates and a set of circular rods. The circular plate at the end of the pull rod 17 is located outside the slider 11, and the circular plate at the center of the pull rod 17 is located inside the slot 16. The circular plate at the center provides support for the telescopic spring 18. The circular rod can be inserted into the hole 20 to limit the position of the insert block 19. The end of the pull rod 17 near the telescopic spring 18 passes through the slider 11 to the inside of the slot 16. The inner surface of the guide ring 8 is fixedly connected to the insert block 19. The outer wall of the insert block 19 is adapted to the inner wall of the slot 16. The surface of the insert block 19 has a hole 20 through it. The inner wall of the hole 20 is adapted to the outer wall of the pull rod 17.

[0035] Working principle: After passing through the guide roller 3, the battery cell passes between two sets of extrusion rollers 15 and is then fixed on two sets of adjusting plates 7. The winding roller 2 rotates to wind the battery cell. During winding, two sets of electric cylinders 13 are activated simultaneously. The electric cylinders 13 drive the two sets of mounting brackets 14 to move closer together, adjusting the distance between the two sets of extrusion rollers 15. After applying extrusion pressure to the battery cell, the bidirectional electric push rod 5 opens and gradually and slowly moves the two sets of adjusting plates 7 away from each other. The two sets of adjusting plates 7 control the tension of the battery cell winding. At the same time, the guide rings 8 in pairs guide the gradually winding battery cell. The elasticity of the fixing spring 12 ensures that the slider 11 always keeps the guide rings 8 close to the edge of the battery cell, preventing the battery cell from... When the winding process is completed, the two sets of guide rings 8 on the outside are forced outward. At this time, the fixed spring 12 is compressed and drives the slider 11 to slide on the slide rod 10. After the guide rings 8 move away from the battery, the pull rod 17 is manually forced outward. The pull rod 17 controls the telescopic spring 18 to retract until the round rod area of ​​the pull rod 17 moves out of the hole 20. Then, the two sets of guide rings 8 are forced to the left and right in sequence. After the insert block 19 is disengaged from the slot 16, the two sets of guide rings 8 on the front side are removed from the adjusting plate 7. The wound battery is then removed from the winding roller 2. This provides tension control during the winding of the battery to ensure the compactness and quality of the battery.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tension control device for winding lithium battery cells, comprising a winding machine (1), wherein a winding roller (2) is rotatably connected to the surface of the winding machine (1), and a guide roller (3) is rotatably connected to the surface of the winding machine (1), characterized in that: The inner wall of the winding roller (2) is fixedly connected to a support plate (4), the side wall of the support plate (4) is fixedly connected to a bidirectional electric push rod (5), the output end of the bidirectional electric push rod (5) is fixedly connected to an adjusting plate (7), the surface of the winding roller (2) is provided with a through hole (6), the outer wall of the adjusting plate (7) is provided with a guide ring (8), the outer wall of the adjusting plate (7) is provided with a sliding groove (9), the inner wall of the sliding groove (9) is fixedly connected to a sliding rod (10), the outer wall of the sliding rod (10) is slidably connected to a slider (11), the side wall of the slider (11) is fixedly connected to a fixing spring (12), and the surface of the winding machine (1) is provided with a tension control auxiliary component.

2. The tension control device for winding a lithium battery cell according to claim 1, characterized in that: The through hole (6) is fitted onto the outer wall of the output end of the bidirectional electric push rod (5).

3. The tension control device for winding a lithium battery cell according to claim 1, characterized in that: The fixing spring (12) is sleeved on the outer wall of the slide rod (10), and the end of the fixing spring (12) away from the slider (11) is fixedly connected to the inner wall of the slide groove (9).

4. The tension control device for winding a lithium battery cell according to claim 1, characterized in that: The tension control auxiliary component includes an electric cylinder (13), the output end of which is fixedly connected to a mounting bracket (14), and the inner wall of the mounting bracket (14) is rotatably connected to a squeezing roller (15).

5. The tension control device for winding a lithium battery cell according to claim 4, characterized in that: The fixed end of the electric cylinder (13) is fixedly connected to the outer surface of the winding machine (1).

6. The tension control device for winding a lithium battery cell according to claim 1, characterized in that: The outer wall of the slider (11) is provided with a slot (16), the inner wall of the slot (16) is fixedly connected with a telescopic spring (18), the end of the telescopic spring (18) is fixedly connected with a pull rod (17), the inner surface of the guide ring (8) is fixedly connected with a plug (19), and the surface of the plug (19) is provided with a hole (20).

7. The tension control device for winding a lithium battery cell according to claim 6, wherein: The outer wall of the insert (19) is adapted to the inner wall of the slot (16), and the inner wall of the hole (20) is adapted to the outer wall of the pull rod (17).

8. The tension control device for winding a lithium battery cell according to claim 6, characterized in that: The end of the pull rod (17) near the telescopic spring (18) passes through the slider (11) to the inside of the slot (16).

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