Bottom corner shearing device for battery coating

Abstract

The utility model provides a battery envelope bottom corner shearing device which comprises a cutting mechanism capable of cutting an envelope and a moving mechanism capable of moving the cutting mechanism, the cutting mechanism is connected with the moving mechanism, the moving mechanism comprises a vertical moving mechanism and a horizontal moving mechanism, and the vertical moving mechanism is connected with the horizontal moving mechanism. According to the utility model, the vertical moving mechanism is used for controlling the cutting mechanism to open an insulating film of a battery, and then the horizontal moving mechanism is used for cutting the insulating film at the bottom of the battery, so that the purpose of corner shearing is realized, the film coating quality and consistency are improved, bubble wrinkles caused by poor cutting are reduced, and the raw material and labor cost is reduced; and the safety of the module is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to a bottom corner cutting device for battery packs. Background Technology

[0002] With the continuous increase in demand for automotive power batteries and the gradual expansion of the application scope of lithium-ion batteries, there is more room for improvement in their production processes and efficiency. Coating is a crucial step in lithium-ion battery manufacturing. Before individual cells are assembled into modules, their surfaces need to be wrapped with a PET insulating film for insulation. However, in traditional coating processes, the cutting equipment lacks positioning capabilities and cuts while the PET insulating film is in a soft, collapsed state. This results in uneven edges on the PET insulating film, often leading to poor precision and low yield at the bottom corners, thus affecting battery production efficiency and product quality. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to improve the accuracy of the bottom corner cutting of the insulating film and improve the quality and consistency of the wrapping.

[0004] This utility model solves the above-mentioned technical problems through the following technical means:

[0005] This utility model provides a bottom corner cutting device for battery pack film, including a cutting mechanism capable of cutting the insulating film and a moving mechanism capable of moving the cutting mechanism. The cutting mechanism is connected to the moving mechanism, and the moving mechanism includes a vertical moving mechanism and a horizontal moving mechanism, with the vertical moving mechanism connected to the horizontal moving mechanism.

[0006] Beneficial effects: This utility model uses a vertical moving mechanism to control the cutting mechanism to expand the insulating film of the battery, and then uses a horizontal moving mechanism to cut the insulating film at the bottom of the battery, thereby achieving the purpose of corner cutting, improving the quality and consistency of the coating, reducing bubbles and wrinkles caused by poor cutting, reducing raw material and labor costs, and greatly improving module safety.

[0007] Preferably, the cutting mechanism includes a blade, a fixed seat, and a threaded rod. The threaded rod is connected to a vertical moving mechanism, the fixed seat is fixed to one end of the threaded rod, and the blade is fixed on both sides of the fixed seat.

[0008] Beneficial effects: This utility model uses a fixing base to open the battery pack film, and then uses a blade to cut the film at the bottom of the battery to achieve the purpose of cutting the corner.

[0009] Preferably, the cutting mechanism has multiple threaded rods of different lengths and fixed seats of different sizes.

[0010] Beneficial effects: This utility model selects appropriate threaded rods and fixing seats according to the battery size for corner cutting, improving the accuracy of corner cutting, and is suitable for corner cutting of insulating films of various sizes of square batteries.

[0011] Preferably, the vertical moving mechanism includes a limiting block and a first telescopic cylinder, the limiting block being connected to a threaded rod, and the first telescopic cylinder being vertically connected to the limiting block.

[0012] Beneficial effects: This utility model uses a first telescopic cylinder to drive the cutting mechanism to move up and down, so that the cutting mechanism stretches and tightens the film from the side of the battery from top to bottom, thereby improving the cutting accuracy.

[0013] Preferably, the horizontal moving mechanism includes a second telescopic cylinder, which is horizontally connected to the limiting block.

[0014] Beneficial effects: This utility model uses a second telescopic cylinder to drive the cutting mechanism to move horizontally, so that the cutting mechanism cuts the insulating film at the bottom of the battery from the inside out, achieving the purpose of cutting the corner.

[0015] Preferably, the limiting block is connected to the connecting frame, the connecting frame is connected to the upright plate, and the first telescopic cylinder is fixed to the top of the upright plate.

[0016] Preferably, the upright plate is connected to the base, and the second telescopic cylinder is connected to the side of the base.

[0017] Beneficial effects: This utility model, by setting up a connecting frame, upright plate and base, is designed to be installed on a battery production line, achieving a reasonable spatial layout.

[0018] Preferably, the upright plate is vertically connected to the base and reinforced by ribs.

[0019] Beneficial effects: This utility model strengthens the connection between the upright plate and the base by setting ribs.

[0020] Preferably, the blade is fixed to both sides of the mounting base by bolts.

[0021] Preferably, the bottom corner-cutting device of the battery pack film is suitable for cutting square battery insulating films of various sizes. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a bottom corner-cutting device for a battery pack film in Embodiment 1;

[0023] Figure 2 This is a schematic diagram of a bottom corner-cutting device for a battery pack film in Embodiment 2;

[0024] Figure 3 This is a schematic diagram of the cutting mechanism in the embodiment. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example 1

[0028] according to Figure 1-3 As shown, this embodiment provides a bottom corner cutting device for a battery pack film, including a cutting mechanism capable of cutting the insulating film and a moving mechanism capable of moving the cutting mechanism, wherein the cutting mechanism is connected to the moving mechanism.

[0029] The cutting mechanism includes a blade 9, a fixed seat 8, and a threaded rod 7. The threaded rod 7 is connected to a moving mechanism. The fixed seat 8 is fixed to one end of the threaded rod 7. The blade 9 is fixed to both sides of the fixed seat 8. The blade 9 is fixed to the side of the fixed seat 8 by bolts, which are hexagonal bolts 10. The cutting mechanism has multiple threaded rods 7 of different lengths and fixed seats 8 of different sizes to adapt to the cutting of square battery insulating films of various sizes.

[0030] The moving mechanism includes a vertical moving mechanism and a horizontal moving mechanism, with the vertical moving mechanism connected to the horizontal moving mechanism. The vertical moving mechanism includes a limiting block 6 and a first telescopic cylinder 11. The bottom of the limiting block 6 is connected to a threaded rod 7, and the first telescopic cylinder 11 is vertically connected to the top of the limiting block 6. The telescopic end of the first telescopic cylinder 11 is vertically connected to the limiting block 6. When the first telescopic cylinder 11 extends or retracts, it drives the limiting block 6 to move up and down, thereby driving the cutting mechanism to move up and down.

[0031] The horizontal moving mechanism includes a second telescopic cylinder 5, which is horizontally connected to a limiting block 6. The second telescopic cylinder 5 is horizontally connected to the side of the limiting block 6. When the second telescopic cylinder 5 extends or retracts, it drives the limiting block 6 to move horizontally, thereby driving the cutting mechanism to move horizontally.

[0032] The working principle of the bottom corner-cutting device of the battery pack film in this embodiment is as follows:

[0033] In this embodiment, the first telescopic cylinder 11 extends and retracts the fixing seat 8 of the cutting mechanism from the top side of the battery 13 to the bottom. Then, the second telescopic cylinder 5 drives the cutting mechanism to move from the inside to the outside, causing the blade 9 to cut the insulating film 12 at the bottom of the battery 13, achieving the purpose of corner cutting. This embodiment stretches and tightens the insulating film 12 of the battery 13 from the inside for cutting, improving the accuracy of corner cutting, improving the quality and consistency of the coating, reducing bubbles and wrinkles caused by poor cutting, reducing raw material and labor costs, and greatly improving module safety. It is suitable for square batteries of different sizes.

[0034] Example 2

[0035] according to Figure 2-3 As shown, this embodiment provides a bottom corner cutting device for a battery pack film, including a cutting mechanism capable of cutting the insulating film and a moving mechanism capable of moving the cutting mechanism, wherein the cutting mechanism is connected to the moving mechanism.

[0036] The cutting mechanism includes a blade 9, a fixed seat 8, and a threaded rod 7. The threaded rod 7 is connected to a moving mechanism. The fixed seat 8 is fixed to one end of the threaded rod 7. The blade 9 is fixed to both sides of the fixed seat 8. The blade 9 is fixed to the side of the fixed seat 8 by bolts, which are hexagonal bolts 10. The cutting mechanism has multiple threaded rods 7 of different lengths and fixed seats 8 of different sizes to adapt to the cutting of square battery insulating films of various sizes.

[0037] The moving mechanism includes a vertical moving mechanism and a horizontal moving mechanism, which are connected to each other. The vertical moving mechanism includes a limiting block 6 and a first telescopic cylinder 11. The bottom of the limiting block 6 is connected to a threaded rod 7, and the side of the limiting block 6 is connected to a connecting frame 1. The connecting frame 1 is connected to the upright plate 2, and the connecting frame 1 is vertically connected to the upright plate 2 at the middle. The first telescopic cylinder 11 is vertically connected to the top of the upright plate 2, and the telescopic end of the first telescopic cylinder 11 is connected to the upright plate 2. When the first telescopic cylinder 11 extends or retracts, it drives the connecting frame 1 to move up and down, thereby driving the cutting mechanism to move up and down. The upright plate 2 is convex in shape, and the connecting frame 1 is vertically connected to the upper middle position of the upright plate 2.

[0038] The horizontal movement mechanism includes a second telescopic cylinder 5. The bottom of the upright plate 2 is vertically connected to the end of the base 4. Specifically, the upright plate 2 and the base 4 are welded together, and a rib plate 3 is welded in the middle of the base 4 to strengthen the connection between the upright plate 2 and the base 4. The second telescopic cylinder 5 is fixed to the base 4. The base 4 has a slot on its side to fix the second telescopic cylinder 5. When the second telescopic cylinder 5 extends or retracts, it drives the base 4 to move horizontally, thereby driving the cutting mechanism to move horizontally.

[0039] In this embodiment, the connecting frame 1, the upright plate 2, and the base 4 can be set according to the actual battery production line size, so that the bottom corner cutting device of the battery pack film in this embodiment can be installed on the battery production line to achieve a reasonable spatial layout.

[0040] The working principle of the bottom corner-cutting device of the battery pack film in this embodiment is as follows:

[0041] In this embodiment, the first telescopic cylinder 11 extends and retracts the fixing seat 8 of the cutting mechanism from the top side of the battery 13 to the bottom. Then, the second telescopic cylinder 5 drives the cutting mechanism to move from the inside to the outside, causing the blade 9 to cut the insulating film 12 at the bottom of the battery 13, achieving the purpose of corner cutting. This embodiment stretches and tightens the insulating film 12 of the battery 13 from the inside for cutting, improving the accuracy of corner cutting, improving the quality and consistency of the coating, reducing bubbles and wrinkles caused by poor cutting, reducing raw material and labor costs, and greatly improving module safety. It is suitable for square batteries of different sizes.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery pack bottom corner trimming device, characterized in that, It includes a cutting mechanism capable of cutting an insulating film and a moving mechanism capable of moving the cutting mechanism. The cutting mechanism is connected to the moving mechanism. The moving mechanism includes a vertical moving mechanism and a horizontal moving mechanism, and the vertical moving mechanism is connected to the horizontal moving mechanism.

2. The battery pack bottom corner-cutting device according to claim 1, characterized in that, The cutting mechanism includes a blade (9), a fixed seat (8), and a threaded rod (7). The threaded rod (7) is connected to a vertical moving mechanism. The fixed seat (8) is fixed to one end of the threaded rod (7), and the blade (9) is fixed on both sides of the fixed seat (8).

3. The battery pack bottom corner-cutting device according to claim 1, characterized in that, The vertical moving mechanism includes a limiting block (6) and a first telescopic cylinder (11). The limiting block (6) is connected to a threaded rod (7), and the first telescopic cylinder (11) is vertically connected to the limiting block (6).

4. The battery pack bottom corner-cutting device according to claim 3, characterized in that, The horizontal moving mechanism includes a second telescopic cylinder (5), which is horizontally connected to a limiting block (6).

5. The battery pack bottom corner-cutting device according to claim 4, characterized in that, The limiting block (6) is connected to the connecting frame (1), the connecting frame (1) is connected to the upright plate (2), and the first telescopic cylinder (11) is fixed on the top of the upright plate (2).

6. The battery pack bottom corner trimming device according to claim 5, characterized in that, The upright plate (2) is connected to the base (4), and the second telescopic cylinder (5) is connected to the side of the base (4).

7. The battery pack bottom corner-cutting device according to claim 6, characterized in that, The upright plate (2) is vertically connected to the base (4) and the connection is reinforced by ribs (3).

8. The battery pack bottom corner-cutting device according to claim 2, characterized in that, The blade (9) is fixed to both sides of the mounting base (8) by bolts.

9. The battery pack bottom corner-cutting device according to claim 2, characterized in that, The cutting mechanism has multiple threaded rods (7) of different lengths and fixed seats (8) of different sizes.

10. The battery pack bottom corner trimming device according to claim 9, characterized in that, The bottom corner-cutting device for the battery pack film is suitable for cutting insulating films of various sizes of square batteries.

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