Battery cell insulation paper girdling module

Abstract

The utility model provides a cell insulation paper girdling module which comprises a vertical frame, a film winding roller is arranged above the vertical frame, a film unwinding roller is arranged below the vertical frame, a paper film is pulled from the film unwinding roller to the film winding roller and wound, the cell insulation paper girdling module further comprises a cutting and printing assembly, the cutting and printing assembly comprises a die-cutting knife and two sets of templates attached to each other, the attaching faces of the templates are arranged in an inclined mode, and the die-cutting knife is arranged on the vertical frame. The paper film passes through the space between the templates; a plurality of die holes are formed in the template, the die cutter penetrates through the die holes, and after the edge of the die cutter firstly makes contact with a paper film, the whole cutter edge gradually cuts the paper film; the battery cell supporting assembly is located at the end of the die hole and used for positioning a battery cell, the battery cell corresponds to the die hole, according to the die set, insulating paper is tightened through the die plate, an inclination with a certain angle is formed, and when a die cutter head conducts cutting, the edge of a circular cutter edge firstly makes contact with the insulating paper and then conducts step-by-step cutting and point contact with the insulating paper; therefore, the annular cutting effect of the insulation paper is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery cell manufacturing equipment, and in particular to a battery cell insulating paper ring-cutting module. Background Technology

[0002] In the manufacturing process of new energy batteries, insulating paper is generally attached to the ends of the battery cells. This insulating paper is typically barley paper, a traditional electrical insulating material. Due to its excellent insulation, high-temperature resistance, wear resistance, and heat protection properties, it is widely used in battery manufacturing. Barley paper is attached to the positive terminal of the battery, primarily serving two purposes:

[0003] 1. It isolates the direct contact between the positive terminal of the battery and the negative terminal of the steel casing, increases insulation strength, and prevents internal short circuits and explosions of the battery.

[0004] 2. To prevent friction during battery pack vibration, which could damage the PVC insulation layer of the battery cells and cause a short circuit. The insulating paper protects the PVC insulation layer from wear and damage.

[0005] The insulating paper has a release film on its surface. When attaching it, the release film needs to be removed before it is cut into a ring and attached to the end of the battery cell. In actual operation, on automated production lines, when the traditional blade cuts the paper, the entire front of the circular blade directly contacts the insulating paper, which may result in the paper not being cut or the cut insulating paper breaking. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model proposes a cell insulation paper ring-cutting module, including a stand, a take-up roller above the stand, and a release roller below the stand. The insulation paper is pulled from the release roller to the take-up roller and wound up. It also includes...

[0007] A die-cutting assembly includes a die-cutting blade and two sets of mutually attached templates. The contact surfaces of the templates are inclined, and the insulating paper passes between the templates. The templates are provided with a plurality of die holes, and the die-cutting blade passes through the die holes. The edge of the die-cutting blade first contacts the insulating paper and then the entire blade gradually cuts the insulating paper.

[0008] A cell support assembly is located at the end of the mold hole and is used to position the cell, with the cell corresponding to the mold hole.

[0009] Preferably, the die-cutting die includes a connecting plate, one side of which is connected to a pushing cylinder, and the other side is arranged with a plurality of annular blades. A cylindrical blade is provided inside the annular blade, and an elastic element is provided at the bottom of the cylindrical blade, which extends out of the annular blade.

[0010] Preferably, the tensioning assembly above the film-releasing roller includes two sets of tensioning rollers, a leveling block is provided above the tensioning roller, and an insulating paper guide roller and a release paper guide roller are provided above the leveling block.

[0011] Preferably, it also includes a tensioning drive assembly located on the upright frame, which includes a tensioning guide roller and a drive roller. The tensioning guide roller is used to vertically tension and guide the cut insulating paper to the drive roller.

[0012] Preferably, the release paper guide roller guides the release paper to the tension guide roller.

[0013] Preferably, the battery cell support assembly includes a support frame, on which two sets of support blocks are arranged in parallel, and on which corresponding arc-shaped positions are arranged, and a pressing cylinder is provided above the support frame, with a pressing block connected to the output end of the pressing cylinder.

[0014] Preferably, the lower part of the support frame is provided with a waste outlet, and a waste bin is provided below the waste outlet.

[0015] Preferably, the inclination angle of the mating surface of the template in the vertical direction is -5° to 5°.

[0016] The battery cell insulation paper ring-cutting module proposed in this utility model has the following beneficial effects: This module tightly holds the insulation paper with a template and forms a certain angle of inclination. When the die-cutting blade head cuts, the circular edge of the blade first contacts the insulation paper, and then gradually cuts, making point contact with the insulation paper, piercing it, and then cutting it into shape, thereby improving the ring-cutting effect of the insulation paper. Attached Figure Description

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 3 This is a side view of the present invention;

[0021] Figure 4 This is a perspective view of the cutting and printing component of this utility model;

[0022] Figure 5 This is a schematic diagram of the die-cutting blade of this utility model;

[0023] Figure 6 This is a side view of the cutting and printing assembly of this utility model;

[0024] The components are as follows: 1. Stand; 2. Take-up roller; 3. Release roller; 4. Cutting assembly; 5. Die-cutting knife; 6. Template; 7. Die hole; 8. Connecting plate; 9. Push cylinder; 10. Annular blade; 11. Columnar blade; 12. Elastic element; 13. Tensioning roller; 14. Leveling block; 15. Insulating paper guide roller; 16. Release paper guide roller; 17. Tensioning guide roller; 18. Drive roller; 19. Support frame; 20. Support block; 21. Arc-shaped position; 22. Pressing cylinder; 23. Pressing block; 24. Waste outlet; 25. Waste bin; 26. Insulating paper; 27. Release paper. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] like Figure 1 As shown, this utility model proposes a cell insulation paper ring-cutting module, including a frame 1. In this embodiment, the frame 1 has two sets of connecting plates 8 arranged opposite each other and a base at the bottom, but is not limited to the above structure. A take-up roller 2 is provided above the frame 1, and a release roller 3 is provided below. The insulation paper is pulled from the release roller 3 to the take-up roller 2 and wound up. It also includes a cutting and printing assembly 4, such as... Figure 2 , Figure 3 As shown, the cutting assembly 4 includes a die-cutting blade 5 and two sets of mutually bonded templates 6. The bonding surfaces of the templates 6 are inclined, and the inclination angle α of the bonding surfaces of the templates 6 in the vertical direction is -5° to 5°. Here, the positive and negative angles are defined with the vertical direction as the starting position, the left side of the vertical direction is the negative angle, and the right side of the vertical direction is the positive angle. The templates 6 are provided with a plurality of die holes 7, and the die-cutting blade 5 passes through the die holes 7. Due to the inclined bonding surfaces of the templates 6, the insulating paper 26 is also inclined. An excessively large angle will result in an elliptical cut, which is not suitable for bonding the end of the battery cell. Therefore, the optimal angle can be -2° or 2°.

[0027] In this embodiment, the die-cutting blade 5 includes a connecting plate 8, such as... Figure 4 , Figure 5As shown, the connecting plate 8 is connected to a pushing cylinder 9 on one side, and several annular blades 10 are arranged on the other side. Each annular blade 10 contains a cylindrical blade 11, and the bottom of the cylindrical blade 11 is provided with an elastic element 12. The bottom of the cylindrical blade 11 refers to the section located inside the annular blade 10. The cylindrical blade 11 extends out of the annular blade 10. During cutting, the pushing cylinder 9 pushes the connecting plate 8, thereby pushing the annular blades 10 towards the inclined insulating paper 26 within the die hole 7. The cylindrical blades 11 are outside the annular blade 10. The bottom edge of the circular blade head of the cylindrical blade 11 first contacts the insulating paper 26, initially piercing the paper. When it advances further... The cylindrical blade 11 can effectively cut the insulating paper 26 into a circle. At the end of the template 6, there is also a battery cell support assembly for positioning the battery cell, and the battery cell corresponds to the die hole 7. After the cylindrical blade 11 cuts the circular opening, the cylindrical blade 11 presses against the end of the battery cell. As the push cylinder 9 continues to push, the annular blade 10 continues to advance, and the elastic element 12 at the bottom of the cylindrical blade 11 is compressed. Here, the elastic element 12 can be a spring, until the annular blade 10 cuts the insulating paper 26 at the same angle and cuts it into a ring and moves along the die hole 7 of the template 6 until it presses against the end of the battery cell, pressing the adhesive part on the back of the insulating paper 26 against the end of the battery cell, thus achieving the bonding of the annular insulating paper 26.

[0028] It should be noted that one side of the insulating paper 26 is glued and is usually attached with release paper 27. Therefore, when the film is laid out, the release paper 27 needs to be removed and rolled up. In addition, during the above-mentioned cutting process, both ends of the insulating paper 26 need to be fully tensioned to ensure the accuracy of the cutting. Therefore, a tensioning component and a tensioning drive component on the stand 1 are provided above the film laying roller 3 (i.e., the upper and lower parts of the cutting component 4 tension the insulating paper 26).

[0029] Specifically: such as Figure 3 As shown, the lower tensioning assembly includes two sets of tensioning rollers 13. A leveling block 14 is provided on the upper part of the tensioning rollers 13. An insulating paper guide roller 15 and a release paper 27 guide roller 16 are provided above the leveling block 14. The tensioning drive assembly is located on the upright frame 1 and includes a tensioning guide roller 17 and a drive roller 18. The tensioning guide roller 17 is used to vertically tension the cut insulating paper and guide it to the drive roller 18. The drive roller 18 includes two sets of rollers stacked on top of each other, used to clamp the waste insulating paper and release paper 27 and drive them to move towards the take-up roller 2. Of course, the take-up roller 2 is also equipped with a drive motor for active winding.

[0030] The specific operation of the insulating paper 26 is as follows: the insulating paper 26 with release paper 27 is pulled out from the film feeding roller 3 and passes through two sets of tensioning rollers 13 to achieve tension. Then it passes through the leveling block 14, which is two sets of blocks pressed together with a gap in the middle for the insulating paper 26 to pass through. This allows the insulating paper 26 to be opened and flattened. Then it is vertically upward. At this time, the release paper 27 is torn off the insulating paper 26. The insulating paper 26 continues to move upward and enters the aforementioned template 6 for die cutting. The release paper 27 then turns along the insulating paper guide roller 15 to the release paper 27 guide roller 16 and is guided to the tensioning guide roller 17 of the tensioning drive assembly. Together with the cut waste paper, it is wound onto the film taking roller 2. The release paper 27 can adhere the adhesive surface, making it easier to wind up.

[0031] In addition, the aforementioned cell support assembly includes a support frame 19, such as Figure 2 As shown, the support frame 19 is set between the upright frame 1 and the cutting assembly 4. Two sets of support blocks 20 are arranged in parallel on the support frame 19. Corresponding arc-shaped positions 21 are arranged on the support blocks 20. The arc-shaped positions 21 are used to place and position the battery cells. A pressing cylinder 22 is provided above the support frame 19. The output end of the pressing cylinder 22 is connected to a pressing block 23. When the pressing cylinder 22 presses down, the pressing block 23 presses down on the battery cells to prevent the battery cells from shifting when applying the insulating film. A waste port 24 is provided at the bottom of the support frame 19. A waste box 25 is provided below the waste port 24 to collect the circular waste paper cut by the cylindrical blade 11.

Claims

1. A cell insulation paper ring-cutting module, comprising a stand (1), wherein a take-up roller (2) is provided above the stand (1), and a release roller (3) is provided below the stand (1), wherein the insulation paper is pulled from the release roller (3) to the take-up roller (2) and wound up, characterized in that, Also includes The cutting assembly (4) includes a die-cutting blade (5) and two sets of mutually attached templates (6). The contact surfaces of the templates (6) are inclined, and the insulating paper passes between the templates (6). The templates (6) are provided with a plurality of die holes (7). The die-cutting blade (5) passes through the die holes (7), and the edge of the die-cutting blade (5) first contacts the insulating paper and then gradually cuts the insulating paper. A cell support assembly is located at the end of the mold hole (7) and is used to position the cell, and the cell corresponds to the mold hole (7).

2. The cell insulation paper ring-cutting module according to claim 1, characterized in that, The die-cutting blade (5) includes a connecting plate (8). One side of the connecting plate (8) is connected to a push cylinder (9), and a plurality of annular blades (10) are arranged on the other side. A cylindrical blade (11) is provided inside the annular blade (10). An elastic element (12) is provided at the bottom of the cylindrical blade (11), and the cylindrical blade (11) extends out of the annular blade (10).

3. The cell insulation paper ring-cutting module according to claim 1, characterized in that, The film-releasing roller (3) is provided with a tensioning assembly including two sets of tensioning rollers (13). The tensioning roller (13) is provided with a leveling block (14) on its upper part. The leveling block (14) is provided with an insulating paper guide roller (15) and a release paper guide roller (16) on its upper part.

4. The cell insulation paper ring-cutting module according to claim 3, characterized in that, It also includes a tension drive assembly located on the stand (1), which includes a tension guide roller (17) and a drive roller (18). The tension guide roller (17) is used to vertically tension and guide the cut insulating paper to the drive roller (18).

5. The cell insulation paper ring-cutting module according to claim 4, characterized in that, The release paper guide roller (16) guides the release paper to the tension guide roller (17).

6. The cell insulation paper ring-cutting module according to claim 1, characterized in that, The battery cell support assembly includes a support frame (19), on which two sets of support blocks (20) are arranged in parallel. Corresponding arc positions (21) are arranged on the support blocks (20). A pressing cylinder (22) is provided above the support frame (19), and a pressing block (23) is connected to the output end of the pressing cylinder (22).

7. The cell insulation paper ring-cutting module according to claim 6, characterized in that, The support frame (19) is provided with a waste inlet (24) at the bottom, and a waste bin (25) is provided at the bottom of the waste inlet (24).

8. The cell insulation paper ring-cutting module according to claim 1, characterized in that, The inclination angle of the mating surface of the template (6) in the vertical direction is -5° to 5°.

Images