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Flexible packaging material for lithium battery of new energy automobile and preparation method of flexible packaging material

A new energy vehicle, lithium battery technology, applied in battery box/sleeve materials, batteries, electronic equipment, etc., can solve problems such as difficulty in ensuring quality, high requirements for solvent bonding layers, etc., and achieve tensile and compressive strength and hardness. Good performance, good flame retardant effect, high heat sealing strength effect

Active Publication Date: 2019-08-02
重庆迅昌汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the aluminum-plastic film for dry-type composite lithium battery flexible packaging has high requirements for the solvent bonding layer, and it is difficult to guarantee the quality

Method used

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  • Flexible packaging material for lithium battery of new energy automobile and preparation method of flexible packaging material
  • Flexible packaging material for lithium battery of new energy automobile and preparation method of flexible packaging material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A flexible packaging material for lithium batteries of new energy vehicles, the flexible packaging material for lithium batteries has a layered structure, the middle layer is an aluminum base layer, the outer side of the aluminum base layer is divided into upper and lower sides, and the lower side is distributed sequentially from the inside to the outside. Adhesive resin layer, PET layer, adhesive resin layer and co-polypropylene layer, the upper side is distributed as adhesive resin layer, PET layer, adhesive resin layer and homopolypropylene layer from inside to outside in turn; the adhesive resin layer It is an adhesive resin with a grid structure, and α-Al is distributed in the grid 2 o 3 Nano powder, described binding resin comprises by mass parts: 90 parts of homopolypropylene, 10 parts of styrene-maleic anhydride copolymers, 0.2 parts of dicumyl peroxide, 4 parts of hydroxyl silicone oil, 0.3 parts of acetic anhydride; the PET layer, the co-polypropylene layer, ...

Embodiment 2

[0026] Substantially the same as Example 1, except that the adhesive resin includes by mass parts: 85 parts of homopolypropylene, 15 parts of styrene-maleic anhydride copolymers, 0.1 parts of dicumyl peroxide, 5 parts Parts of hydroxy silicone oil, 0.2 parts of acetic anhydride.

Embodiment 3

[0028] It is basically the same as Example 1, except that the binder resin includes by mass parts: 95 parts of homopolypropylene, 5 parts of styrene-maleic anhydride copolymers, 0.3 parts of dicumyl peroxide, 3 parts Parts of hydroxy silicone oil, 0.4 parts of acetic anhydride.

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Abstract

The invention discloses a flexible packaging material for a lithium battery of a new energy automobile and a preparation method of the flexible packaging material. The flexible packaging material forthe lithium battery is of a layered structure, the middle layer is an aluminum base layer, and the outer side of the aluminum base layer is divided into an upper side and a lower side; an adhesive resin layer, a PET layer, an adhesive resin layer and a copolymerized polypropylene layer are sequentially distributed from inside to outside on the lower side; an adhesive resin layer, a PET layer, an adhesive resin layer and a homopolypropylene layer are sequentially distributed from inside to outside on the upper side; the adhesive resin layer is binding resin of a grid structure, and alpha-Al2O3nanopowder is distributed in grids; the binding resin comprises homopolypropylene, a copolymer of styrene-maleic anhydride, dicumyl peroxide, acetic anhydride and hydroxy silicone oil. The heat-sealing strength, flame-retardant performance and heat-dissipating performance of the flexible packaging material for the lithium battery of the new energy automobile are comprehensively improved by adopting a specific structure and adding acetic anhydride and hydroxy silicone oil.

Description

technical field [0001] The invention belongs to the technical field of lithium battery packaging, and in particular relates to a flexible packaging material for lithium batteries of new energy vehicles and a preparation method thereof. Background technique [0002] At present, the aluminum-plastic film for lithium battery packaging in the market is monopolized by two Japanese companies. Although many domestic manufacturers are developing it, they have failed. There is no domestically produced aluminum-plastic film for lithium battery flexible packaging in the market. Flexible packaging lithium batteries are widely used in the packaging of lithium batteries due to their advantages of being thin, large in size, irregular in shape, non-combustible, and extremely small in explosive power. [0003] At present, most of the aluminum-plastic films for flexible packaging of lithium batteries on the market are produced by dry lamination process. The particularity of the use of materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B15/09B32B15/20B32B27/08B32B27/32B32B33/00B32B37/02B32B37/06B32B37/10B32B37/12H01M2/02C09J123/12C09J135/06C09J183/04C09J11/06
CPCB32B15/09B32B15/20B32B27/08B32B27/32B32B33/00B32B7/12B32B37/06B32B37/12B32B37/10B32B37/02C09J123/12C09J11/06H01M2220/20B32B2457/10B32B2307/558B32B2307/714B32B2307/7242B32B2307/3065H01M50/116H01M50/124C08L35/06C08L83/04C08K5/14Y02E60/10
Inventor 不公告发明人
Owner 重庆迅昌汽车零部件有限公司
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