Lithium battery top-attached insulating sheet

Abstract

The utility model discloses a square lithium battery top-attached insulating sheet, which comprises an insulating sheet and a bottom film layer which are adhered together through an adhesive layer, an anti-explosion valve through hole is arranged in the middle of the insulating sheet, pole through holes are symmetrically arranged on two sides of the anti-explosion valve through hole, a lug is arranged on one side of the bottom film layer, and a square through hole is arranged on the lug. The utility model has the advantages that the bottom film layer which is integrally cut and formed is adhered with the insulating sheet through the adhesive layer, so that the tedious step of cutting the insulating sheet on a large bottom film layer is avoided, and meanwhile, the through holes in the convex sheet on one side of the bottom film layer not only can be used for conveniently bundling a plurality of insulating sheets, but also can be used for conveniently bundling the insulating sheets. According to the battery insulation sheet pasting device, the automatic feeding mechanism can be conveniently assembled and positioned, the insulation sheet can be rapidly assembled and positioned, the working efficiency is improved, and when the insulation sheet is manually pasted, a tearing sheet on one side of a protruding sheet can facilitate workers to rapidly tear down a bottom film layer, and pasting work of the battery insulation sheet is completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery production and manufacturing, and specifically relates to a square lithium battery top insulating sheet. Background Art

[0002] Lithium batteries have outstanding features such as superior performance, high energy density, long cycle life, low self-discharge rate, and green environmental protection, and they are widely used. In the traditional production and manufacturing of lithium batteries, an insulating sheet needs to be set between the battery cell and the battery cover to separate the battery cell and the battery cap, and to provide insulation protection for the lithium battery cell. Currently, most insulating sheets are laid flat on a larger bottom film layer, and the staff also needs to cut the insulating sheet. At the same time, the insulating sheet is easy to be scattered everywhere, which is not convenient for storage, affecting the subsequent use of the insulating sheet, and it is not convenient for the automatic feeding mechanism to assemble and position, and it is very inconvenient to tear off the bottom film layer of the insulating sheet. Utility Model Content

[0003] The utility model aims to provide a square lithium battery top insulating sheet to solve the problems in the prior art of cumbersome cutting of the insulating sheet, inconvenient storage and assembly and positioning of the automatic feeding mechanism, difficulty in tearing off the bottom film layer, and inconvenient use.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a square lithium battery top insulating sheet, including an insulating sheet 2 and a bottom film layer 3 pasted together by a glue layer 1, an explosion-proof valve through hole 4 is provided in the middle of the insulating sheet 2, and pole through holes 5 are symmetrically provided on both sides of the explosion-proof valve through hole 4, a convex piece 6 is provided on one side of the bottom film layer 3, and a "square" through hole 7 is opened on the convex piece 6.

[0005] Preferably, the length of the through hole 7 is 40 mm-70 mm, and the width of the through hole 7 is 15 mm-25 mm.

[0006] Preferably, a tear sheet 8 is provided on one side of the protruding piece 6 .

[0007] Preferably, the surface of the tear sheet 8 is evenly provided with anti-slip protrusions 9 .

[0008] Preferably, the bottom film layer 3, the protruding piece 6 and the tearing piece 8 are cut and formed in one piece.

[0009] The advantages of the utility model are: the integrally cut and formed bottom film layer is adhered to the insulating sheet through the adhesive layer, and each insulating sheet is separate, thus avoiding the tedious steps of cutting the insulating sheet on the large bottom film layer. At the same time, the through hole on the convex sheet on one side of the bottom film layer can not only facilitate the bundling of multiple insulating sheets, but also facilitate the assembly and positioning of the automatic feeding mechanism. By passing the rope through the through hole and tying a knot, many messy insulating sheets can be summarized and bundled together for easy and regular storage. When in use, only a bundle of insulating sheets needs to be placed on the positioning block of the feeding mechanism. The insulating sheets can be quickly assembled and positioned by cooperating with the through hole and the positioning block, thereby improving work efficiency. When the insulating sheets are manually pasted, the tearing piece on one side of the convex sheet can facilitate the staff to quickly tear off the bottom film layer and complete the pasting of the battery insulating sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0012] The meanings of the reference numerals are as follows: adhesive layer (1), insulating sheet (2), bottom film layer (3), explosion-proof valve through hole (4), pole through hole (5), convex sheet (6), through hole (7), tear sheet (8), anti-slip protrusion (9). DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0014] like Figure 1 and Figure 2 A square lithium battery top-attached insulating sheet shown in the figure comprises an insulating sheet 2 and a bottom film layer 3 which are adhered together by an adhesive layer 1. An explosion-proof valve through hole 4 is provided in the middle of the insulating sheet 2, and pole through holes 5 are symmetrically provided on both sides of the explosion-proof valve through hole 4. A convex piece 6 is provided on one side of the bottom film layer 3, and a "square" through hole 7 is opened on the convex piece 6. When neat storage is required, the staff can tie a knot by passing a rope through the through hole 7 to bundle the messy insulating sheets together. When they need to be used, they only need to place a bundle of insulating sheets on the positioning block of the feeding mechanism. The shape of the through hole 7 is compatible with the shape of the positioning block, so that the insulating sheets can be quickly assembled and positioned, thereby improving work efficiency.

[0015] According to the different positioning blocks of the feeding mechanism, insulating sheets with through holes 7 of different sizes are selected so that the insulating sheets can better cooperate with the positioning blocks of the feeding mechanism. The length of the through hole 7 is set to 40mm-70mm, and the width of the through hole 7 is set to 15mm-25mm.

[0016] In order to facilitate manual tearing and pasting of the insulating sheet, a tearing sheet 8 is provided on one side of the protruding sheet 6 , and anti-slip protrusions 9 are evenly provided on the surface of the tearing sheet 8 .

[0017] In order to facilitate the insulating sheet 2 and the bottom film layer 3 to form a whole after being pasted together, the bottom film layer 3, the protruding piece 6, and the tearing piece 8 are cut and formed as a whole, which is convenient for the subsequent use and regular storage of the insulating sheet.

[0018] The working process of the utility model is as follows: first, the staff stacks the messy insulating sheets together, passes the rope through the through hole 7 and ties a knot, and bundles the insulating sheets together for the regular storage of the insulating sheets; secondly, when the insulating sheets need to be fed through the feeding mechanism, the staff puts the whole bundle of insulating sheets on the positioning block of the feeding mechanism, and cooperates with the positioning block through the through hole 7, so that the insulating sheets and the positioning block cooperate more firmly, which is convenient for tearing the bottom film layer 3 and pasting the insulating sheet 2; thirdly, when the bottom film layer 3 needs to be torn manually, the staff only needs to pinch the tearing piece 8 with two fingers to easily peel the insulating sheet 2 off the bottom film layer 3, and the anti-slip protrusion 9 facilitates the pinching of fingers; finally, after the insulating sheet 2 is pasted, the staff cleans and organizes the torn bottom film layer 3.

[0019] The above-described embodiments are only preferred examples of the present invention, and the technical solutions of the present invention are not limited thereto. It should be pointed out that for ordinary technicians in this field, under the technical enlightenment provided by the present invention, as common knowledge in the field, other equivalent deformations and improvements can be made, which should also be regarded as the protection scope of the present invention.

Claims

1. A square lithium battery top insulating sheet, characterized in that: The invention comprises an insulating sheet (2) and a bottom film layer (3) which are adhered together by an adhesive layer (1); an explosion-proof valve through hole (4) is provided in the middle of the insulating sheet (2); pole through holes (5) are symmetrically provided on both sides of the explosion-proof valve through hole (4); a convex sheet (6) is provided on one side of the bottom film layer (3); and a "square" through hole (7) is opened on the convex sheet (6).

2. A square lithium battery top insulating sheet as claimed in claim 1, characterized in that: The length of the through hole (7) is 40 mm to 70 mm, and the width of the through hole (7) is 15 mm to 25 mm.

3. A square lithium battery top insulating sheet as claimed in claim 2, characterized in that: A tearing piece (8) is provided on one side of the protruding piece (6).

4. A square lithium battery top insulating sheet as claimed in claim 3, characterized in that: The surface of the tear sheet (8) is evenly provided with anti-slip protrusions (9).

5. A square lithium battery top insulating sheet as claimed in claim 4, characterized in that: The bottom film layer (3), the protruding piece (6) and the tearing piece (8) are cut and formed in one piece.

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