Clamp for winding and ending lithium battery

Abstract

The utility model relates to a clamp for winding and ending a lithium battery, and belongs to the technical field of lithium battery processing equipment. According to the utility model, the cushion blocks and the pressing blocks are arranged on the clamping plates, and the rectangular grooves are formed in the cushion blocks and used for guiding accurate alignment of positive and negative pole pieces, so that the problem of short circuit caused by the fact that a positive pole active area exceeds a negative pole active area is avoided, potential safety hazards are reduced, and meanwhile, workers can conveniently and quickly align and clamp the positive and negative pole pieces; the manual operation time is shortened, the tedious degree is reduced, it is ensured that all employees finish the battery cells of the same model consistently, and therefore the winding quality of the battery cells is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of lithium battery processing equipment, specifically relating to a clamp for winding and finishing lithium batteries. Background Technology

[0002] With the continuous advancement of technology, lithium batteries have been widely used in various fields due to their advantages such as high energy density and long cycle life. The winding process of lithium batteries is a key step in winding the positive and negative electrode sheets and separator into bare cells, and its quality directly affects the performance and safety of the battery.

[0003] The traditional finishing method involves manually stacking and aligning the positive and negative electrode sheets with the separator attached, then clamping the ends of the sheets together using two pieces of cardboard and ordinary clips. However, this method is not only cumbersome and inefficient, but also makes it difficult to ensure precise alignment of the positive and negative electrode sheets, easily causing the positive active area to extend beyond the negative active area, posing a safety hazard. Furthermore, due to variations in manual operation, different employees may finish the same type of cell inconsistently, affecting the winding quality of the cell. Utility Model Content

[0004] To overcome the problems of traditional winding finishing methods in the background technology, which are not only cumbersome and inefficient, but also difficult to ensure precise alignment of the positive and negative electrode sheets, easily leading to the positive active area exceeding the negative active area, posing a safety hazard, and inconsistent finishing for the same type of battery cell due to differences in manual operation, thus affecting the winding quality of the battery cell, this utility model provides a clamp for winding finishing of lithium batteries. By setting pads and pressure blocks on the clamping plate, and setting rectangular grooves on the pads to guide the precise alignment of the positive and negative electrode sheets, it avoids short circuit problems caused by the positive active area exceeding the negative active area, reducing safety hazards. At the same time, it facilitates employees to quickly align and clamp the positive and negative electrode sheets, reducing the time and cumbersomeness of manual operation, ensuring consistent finishing for the same type of battery cell by all employees, thereby improving the winding quality of the battery cell.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a clamp for winding and finishing lithium batteries mainly consists of an upper clamping plate, a lower clamping plate, a torsion spring, a connecting rod, a pad, and a pressure block. The upper and lower clamping plates are both formed by a transitional connection between a horizontal section and an inclined section. A pressing block is provided on the inclined section of the upper and lower clamping plates. The two pressing blocks are connected by a connecting rod. A torsion spring is sleeved on the connecting rod to abut against the two pressing blocks. A pad is provided on the lower clamping plate. A rectangular groove for limiting the positive and negative electrode sheets is opened on the top surface of the pad. A pressure block is provided on the bottom surface of the upper clamping plate. A raised rectangular pressure plate is provided on the bottom surface of the pressure block.

[0006] The length and width of the rectangular pressure plate are both smaller than the length and width of the rectangular groove, while the height is greater than the height of the rectangular groove.

[0007] The rectangular groove has guide grooves on both sides to guide the movement of the positive and negative electrode plates.

[0008] The pad, pressure block, and rectangular pressure plate are all made of rubber.

[0009] Multiple reinforcing ribs are provided on the outer surfaces of both the upper and lower clamping plates.

[0010] The rectangular groove has a rounded corner at the opening end.

[0011] The beneficial effects of this utility model are:

[0012] This invention uses pads and pressure blocks on the clamping plate, with rectangular grooves on the pads to guide the precise alignment of the positive and negative electrode sheets. This avoids short circuits caused by the positive active area exceeding the negative active area, reducing safety hazards. At the same time, it facilitates employees to quickly align and clamp the positive and negative electrode sheets, reducing the time and complexity of manual operation, and ensuring that all employees finish the same type of battery cell with consistent results, thereby improving the winding quality of the battery cell. Attached Figure Description

[0013] Figure 1 This is the isometric drawing of this utility model.

[0014] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0015] Figure 3 This is a three-dimensional schematic diagram of the clamping state of this utility model.

[0016] Figure 4 This is another three-dimensional schematic diagram of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a clamp for winding and finishing lithium batteries. The clamp mainly includes an upper clamping plate 1, a lower clamping plate 2, a torsion spring 3, a connecting rod 4, a pad 5, and a pressure block 6. The upper clamping plate 1 and the lower clamping plate 2 are both formed by a transitional connection between a horizontal section 101 and an inclined section 102. A pressing block 103 is provided on the inclined section 102 of the upper clamping plate 1 and the lower clamping plate 2. The two pressing blocks 103 are connected by a connecting rod 4. A torsion spring 3 is sleeved on the connecting rod 4 to abut against the two pressing blocks 103. A pad 5 is provided on the lower clamping plate 2. A rectangular groove 501 for limiting the positive and negative electrode sheets is opened on the top surface of the pad 5. A pressure block 6 is provided on the bottom surface of the upper clamping plate 1. A raised rectangular pressure plate 601 is provided on the bottom surface of the pressure block 6. The length and width of the rectangular pressure plate 601 are smaller than the length and width of the rectangular groove 501, and the height is greater than the height of the rectangular groove 501.

[0019] In use, the operator manually presses the pressing blocks 103 on the upper clamping plate 1 and the lower clamping plate 2 to open them. Then, the positive and negative electrode sheets with diaphragms are placed on the pad 5 on the lower clamping plate 2, so that they are located in the rectangular groove 501, and the ends and sides of the positive and negative electrode sheets are aligned with the side walls of the groove 501. This achieves the positioning of the positive and negative electrode sheets, avoiding short circuits caused by the positive active area exceeding the negative active area, and reducing safety hazards. Next, the pressing blocks 103 on the upper clamping plate 1 and the lower clamping plate 2 are released. At this time, the upper clamping plate 1 and the lower clamping plate 2 close under the elastic force of the torsion spring 3, and the pressing block 6 moves downward. The rectangular pressing plate 601 presses the positive and negative electrode sheets tightly in the rectangular groove 501. This makes it easy for employees to quickly align and clamp the positive and negative electrode sheets, effectively reducing the time and tediousness of manual operation, ensuring that all employees finish the same type of battery cell in a consistent manner, thereby improving the consistency and quality stability of the battery cells.

[0020] The rectangular groove 501 has guide grooves 502 on both sides for guiding the movement of the positive and negative electrode sheets. The guide grooves 502 can guide the movement of the positive and negative electrode sheets, making it easier for them to enter the rectangular groove 501 and maintain the correct position during clamping. This can further improve the alignment accuracy of the positive and negative electrode sheets, reduce the difficulty of operation, and improve work efficiency.

[0021] The pad 5, pressure block 6 and rectangular pressure plate 601 are all made of rubber. Rubber has a certain elasticity, which can provide a buffer when clamping the positive and negative electrode sheets to prevent damage to the positive and negative electrode sheets. At the same time, it ensures that the positive and negative electrode sheets will not slide or shift during the clamping process, thereby improving the stability of the clamping.

[0022] Multiple reinforcing ribs 104 are provided on the outer surfaces of the upper clamping plate 1 and the lower clamping plate 2; the reinforcing ribs 104 can increase the rigidity and bending resistance of the upper clamping plate 1 and the lower clamping plate 2, making them more robust and durable, and reducing the risk of deformation or damage.

[0023] The rectangular groove 501 has a rounded corner 503 at the opening end; the rounded corner 503 can eliminate sharp edges, reduce the risk of the positive and negative electrode plates being scratched when inserted or removed from the rectangular groove 501, and at the same time provide a smoother transition, making it easier for the positive and negative electrode plates to be inserted into the rectangular groove 501.

[0024] Work process:

[0025] In use, the operator manually presses the pressing blocks 103 on the upper clamping plate 1 and the lower clamping plate 2 to open them. Then, the positive and negative electrode sheets with diaphragms are placed on the pad 5 on the lower clamping plate 2, so that they are located in the rectangular groove 501, and the ends and sides of the positive and negative electrode sheets are aligned with the side walls of the groove 501. This achieves the positioning of the positive and negative electrode sheets, avoiding short circuits caused by the positive active area exceeding the negative active area, and reducing safety hazards. Next, the pressing blocks 103 on the upper clamping plate 1 and the lower clamping plate 2 are released. At this time, the upper clamping plate 1 and the lower clamping plate 2 close under the elastic force of the torsion spring 3, and the pressing block 6 moves downward. The rectangular pressing plate 601 presses the positive and negative electrode sheets tightly in the rectangular groove 501. This makes it easy for employees to quickly align and clamp the positive and negative electrode sheets, effectively reducing the time and tediousness of manual operation, ensuring that all employees finish the same type of battery cell with the same winding, thereby improving the winding quality of the battery cell.

[0026] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A clamp for finishing the winding of a lithium battery, characterized in that: The aforementioned lithium battery winding clamp includes an upper clamping plate (1), a lower clamping plate (2), a torsion spring (3), a connecting rod (4), a pad (5), and a pressure block (6). The upper clamping plate (1) and the lower clamping plate (2) are both formed by transitional connection of a horizontal section (101) and an inclined section (102). A pressing block (103) is provided on the inclined section (102) of the upper clamping plate (1) and the lower clamping plate (2). The two pressing blocks (103) are connected by a connecting rod (4). A torsion spring (3) is sleeved on the connecting rod (4) and abuts against the two pressing blocks (103). A pad (5) is provided on the lower clamping plate (2). A rectangular groove (501) for limiting the positive and negative electrode sheets is opened on the top surface of the pad (5). A pressure block (6) is provided on the bottom surface of the upper clamping plate (1). A raised rectangular pressure plate (601) is provided on the bottom surface of the pressure block (6).

2. The lithium battery winding clamp as described in claim 1, characterized in that: The length and width of the rectangular pressure plate (601) are both smaller than the length and width of the rectangular groove (501), and the height is greater than the height of the rectangular groove (501).

3. A lithium battery winding finishing fixture as described in claim 1 or 2, characterized in that: The rectangular groove (501) has guide grooves (502) on both sides for guiding the movement of the positive and negative electrode plates.

4. A lithium battery winding finishing fixture as described in claim 1 or 2, characterized in that: The pad (5), pressure block (6) and rectangular pressure plate (601) are all made of rubber.

5. The lithium battery winding finishing fixture as described in claim 1, characterized in that: Multiple reinforcing ribs (104) are provided on the outer surfaces of the upper clamping plate (1) and the lower clamping plate (2).

6. The lithium battery winding finishing fixture as described in claim 1, characterized in that: The rectangular groove (501) has a rounded corner (503) at the opening end.

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