Special adhesive tape for packaging lithium battery

Abstract

The utility model relates to the technical field of lithium battery packaging, in particular to a special adhesive tape for packaging a lithium battery, which comprises a lithium battery base layer and a packaging layer packaged on the battery base layer, the packaging layer comprises a bonding layer at the bottom, a plurality of filling areas are arranged in the middle of the bonding layer in an array mode, the filling areas are filled with buffer layers, and gaps are reserved between the buffer layers and the bonding layer; the upper end of the bonding layer is provided with a composite layer, the composite layer is divided into an upper layer and a lower layer, the upper composite layer and the lower composite layer are respectively filled with an insulating layer and a heat-resistant layer which are adjacently arranged, the insulating layer at the upper end and the heat-resistant layer at the lower end are located on the same vertical plane, and the heat-resistant layer at the upper end and the insulating layer at the lower end are located on the same vertical plane. The novel packaging adhesive tape for the lithium battery is obtained by adopting a staggered adjacent mode, the bottom adhesive layer is adhered out of the buffer layer, and the reduced buffer layer is superposed, so that the thickness of the adhesive tape is reduced, and the light and thin improvement of the adhesive tape is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery packaging, in particular to a special adhesive tape for lithium battery packaging. Background Art

[0002] Lithium battery packaging tape is mainly used in the manufacturing process of lithium batteries and has multiple functions, aiming to ensure stable performance and safe operation of the battery.

[0003] The main purpose of the current lithium battery packaging tape process is to insulate the outside, and considering that lithium batteries will generate heat during the charging and discharging process, the packaging tape must have good temperature resistance. In order to achieve this series of effects, the existing tape mainly uses stacked layers of different materials to achieve the corresponding effects, and the conventional stacked material adding method has a single mode. In order to improve the form of lithium battery packaging tape, an improved new lithium battery packaging special tape can be introduced. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0005] A special adhesive tape for lithium battery packaging, comprising a lithium battery base layer and a packaging layer packaged on the battery base layer; the packaging layer comprises an adhesive layer at the bottom, a plurality of filling areas are arrayed in the middle of the adhesive layer, a buffer layer is filled in the filling area, and a gap is left between the buffer layer and the adhesive layer; a composite layer is provided at the upper end of the adhesive layer, the composite layer is divided into an upper and a lower layer, the upper and lower composite layers are both filled with adjacently arranged insulating layers and heat-resistant layers, and the upper insulating layer and the lower heat-resistant layer are in the same vertical plane, and the upper heat-resistant layer and the lower insulating layer are in the same vertical plane.

[0006] Furthermore, the composite layer is provided with mesh holes at the same vertical plane position as the gap on the packaging layer, and channels are provided on the sides of the mesh holes.

[0007] Furthermore, guide holes are filled between the insulating layer and the heat-resistant layer in the upper and lower composite layers, and the guide holes are connected to the channels.

[0008] Furthermore, the buffer layer is made of carbon fiber composite material.

[0009] Furthermore, the insulating layer is made of polyvinyl chloride or polyethylene.

[0010] The beneficial effects of the utility model are:

[0011] Different from the traditional layered stacking method, a new type of packaging tape for lithium batteries is obtained by adopting a staggered adjacent method. The bottom adhesive layer is opened to form a buffer layer for adhesion, and the superposition of the buffer layer is reduced, which reduces the thickness of the tape and further ensures its lightness and improvement.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the planar structure of the encapsulation layer.

[0015] The reference numerals in the figures are: lithium battery base layer-1, encapsulation layer-2, bonding layer-201, buffer layer-202, gap-203, composite layer-3, insulating layer-301, heat-resistant layer-302, mesh-4, channel-5, guide hole-6. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figures 1-2 The utility model includes a lithium battery base layer 1 and an encapsulation layer 2 encapsulated on the battery base layer; the encapsulation layer 2 includes a bottom adhesive layer 201, a plurality of filling areas are arrayed in the middle of the adhesive layer 201, a buffer layer 202 is filled in the filling area, and a gap 203 is left between the buffer layer 202 and the adhesive layer 201; a composite layer 3 is provided on the upper end of the adhesive layer 201, and the composite layer 3 is divided into an upper and a lower layer, and the upper and lower composite layers 3 are filled with adjacently arranged insulating layers 301 and heat-resistant layers 302, and the upper insulating layer 301 and the lower heat-resistant layer 302 are in the same vertical plane, and the upper heat-resistant layer 302 and the lower insulating layer 301 are in the same vertical plane.

[0018] The adhesive tape mainly includes an adhesive layer 201 and a composite layer 3. For the adhesive layer 201, a buffer layer 202 is filled in the filling area thereof. The buffer layer 202 is made of polyvinyl chloride or polyethylene, and a gap 203 is left between the buffer layer 202 and the adhesive layer 201. The design is to make the adhesive layer 201 and the buffer layer 202 in the same plane. When the adhesive tape is adhered to the lithium battery base layer 1 through the adhesive layer 201, the buffer layer 202 in the same plane plays a certain external buffering and decompression effect; and a composite layer 3 is provided on the upper end of the adhesive layer 201. The composite layer 3 is divided into an upper layer and a lower layer. The upper and lower composite layers 3 are provided with meshes 4 at the same vertical plane position as the gap 203 on the packaging layer 2, and a channel 5 is provided on the side of the mesh 4. That is, when the lithium battery is loaded in the equipment, its heat will pass through the mesh 4, the guide hole 6, and the channel 5 in turn for heat dissipation, thereby reducing the heat accumulation of high-power conductive use.

[0019] As for the design of the upper and lower composite layers 3, both are filled with adjacently arranged insulating layers 301 and heat-resistant layers 302. Different from the traditional stacked layers, the insulation effect and good heat resistance are achieved by adjacent and staggered methods, thus proposing a new improvement method.

[0020] The above is only a preferred embodiment of the utility model, and does not constitute any form of limitation to the utility model. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the utility model, which do not depart from the content of the technical solution of the utility model, are within the scope of the technical solution of the utility model.

Claims

1. A special adhesive tape for lithium battery packaging, characterized in that: It comprises a lithium battery base layer (1) and a packaging layer (2) packaged on the battery base layer; The encapsulation layer (2) comprises a bottom adhesive layer (201), the adhesive layer (201) has a plurality of filling areas in an array in the middle, the filling areas are filled with a buffer layer (202), and a gap (203) is left between the buffer layer (202) and the adhesive layer (201); A composite layer (3) is provided at the upper end of the adhesive layer (201), and the composite layer (3) is divided into an upper layer and a lower layer. The upper and lower composite layers (3) are both filled with adjacently arranged insulating layers (301) and heat-resistant layers (302), and the upper insulating layer (301) and the lower heat-resistant layer (302) are located in the same vertical plane, and the upper heat-resistant layer (302) and the lower insulating layer (301) are located in the same vertical plane.

2. The special adhesive tape for lithium battery packaging according to claim 1, characterized in that: The upper and lower composite layers (3) are provided with mesh holes (4) at the same vertical plane position as the gap (203) on the packaging layer (2), and the sides of the mesh holes (4) are provided with channels (5).

3. The special adhesive tape for lithium battery packaging according to claim 2, characterized in that: A guide hole (6) is filled between the insulating layer (301) and the heat-resistant layer (302) in the upper and lower composite layers (3), and the guide hole (6) is connected to the hole channel (5).

4. The special adhesive tape for lithium battery packaging according to claim 1, characterized in that: The buffer layer (202) is made of carbon fiber composite material.

5. The special adhesive tape for lithium battery packaging according to claim 1, characterized in that: The insulating layer (301) is made of polyvinyl chloride or polyethylene.

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