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A flexible packaging material for lithium battery of a new energy automobile

A technology for new energy vehicles and lithium batteries, which is applied to battery pack components, battery boxes/coats, small-sized batteries/battery packs, etc., can solve problems such as low service life and easy deformation, and achieve electrolyte corrosion prevention, Prevent deformation and breakage, strong anti-puncture ability

Inactive Publication Date: 2018-12-18
杭州中齐新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the aluminum-plastic film material for lithium batteries has a good shape, it is easily deformed under the condition of electrolyte immersion and has a low service life.

Method used

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  • A flexible packaging material for lithium battery of a new energy automobile
  • A flexible packaging material for lithium battery of a new energy automobile
  • A flexible packaging material for lithium battery of a new energy automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A flexible packaging material for lithium batteries of new energy vehicles, consisting of an outer nylon layer (30um in thickness), a middle aluminum foil layer and an inner polypropylene film layer (25um in thickness), the middle aluminum foil layer is divided into two layers, the upper layer The thickness is 11um, and the thickness of the lower layer is 70um; the first adhesive layer is coated between the two layers of aluminum foil; the second adhesive layer is coated between the nylon layer and the upper layer of the aluminum foil layer; the aluminum foil layer A third adhesive layer is coated between the lower layer of the lower layer and the polypropylene film.

[0021] The viscose of the first adhesive layer (thickness is 18um) is made by mixing uniformly the following components: polyacrylate 50g, dioctyl phthalate 30g, ethylene-vinyl acetate copolymer 25g, polyvinylidene fluoride Resin 25g, cerium oxide 15g.

[0022] The viscose of the second adhesive layer (t...

Embodiment 2

[0025] A flexible packaging material for a new energy vehicle lithium battery, consisting of an outer nylon layer (20um in thickness), a middle aluminum foil layer and an inner polypropylene film layer (20um in thickness), the middle aluminum foil layer is divided into two layers, the upper layer The thickness is 9um, and the thickness of the lower layer is 60um; the first adhesive layer is coated between the two layers of aluminum foil; the second adhesive layer is coated between the upper layer of the nylon layer and the aluminum foil layer; the aluminum foil layer A third adhesive layer is coated between the lower layer of the lower layer and the polypropylene film.

[0026] The viscose of the first adhesive layer (thickness is 15um) is made by mixing uniformly the following components: polyacrylate 30g, dioctyl phthalate 20g, ethylene-vinyl acetate copolymer 20g, polyvinylidene fluoride Resin 20g, cerium oxide 10g.

[0027] The viscose of the second adhesive layer (thickn...

Embodiment 3

[0030] A flexible packaging material for lithium batteries of new energy vehicles, consisting of an outer nylon layer (40um in thickness), a middle aluminum foil layer and an inner polypropylene film layer (30um in thickness), the middle aluminum foil layer is divided into two layers, the upper layer The thickness is 13um, and the thickness of the lower layer is 80um; the first adhesive layer is coated between the two layers of aluminum foil; the second adhesive layer is coated between the nylon layer and the upper layer of the aluminum foil layer; the aluminum foil layer A third adhesive layer is coated between the lower layer of the lower layer and the polypropylene film.

[0031] The viscose of the first adhesive layer (thickness is 20um) is made by mixing uniformly the following components: polyacrylate 80g, dioctyl phthalate 50g, ethylene-vinyl acetate copolymer 30g, polyvinylidene fluoride Resin 30g, cerium oxide 20g.

[0032] The viscose of the second adhesive layer (t...

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Abstract

The invention discloses a flexible packaging material for a lithium battery of a new energy automobile. The flexible packaging material is composed of an outer layer of nylon, a middle layer of aluminum foil and an inner layer of polypropylene film, wherein the middle layer of aluminum foil includes two layers, and the thickness of the upper layer is 9-13[mu]m, and the thickness of the lower layeris 60-80[mu]m; a first adhesive layer is coated between the two layers of aluminum foils; a second adhesive layer is coated between the nylon layer and the upper layer surface of the aluminum foil layer; and a third adhesive layer is coated between the lower layer surface of the aluminum foil layer and the polypropylene film. The flexible packaging material prepared by the invention has the advantages of strong plasticity, waterproofness, electrolyte corrosion resistance and strong puncture resistance, and is suitable for packaging lithium batteries for electric vehicles.

Description

technical field [0001] The invention belongs to the technical field of lithium batteries for electric vehicles, and in particular relates to a flexible packaging material for lithium batteries of new energy vehicles. Background technique [0002] As the country pays more and more attention to environmental protection, people pay more and more attention to new energy vehicles. New energy vehicles include hydrogen fuel cell vehicles and electric vehicles. Due to the complex technology and high cost of hydrogen fuel cell vehicles, they have not been widely used. , Electric vehicles have been widely used because they do not emit exhaust gas and have low technical requirements. The core component of electric vehicles is batteries. Lithium batteries are generally used at present. The factors that affect the charging and discharging efficiency of lithium batteries are the active materials of batteries. Energy density, one is the packaging material of lithium batteries. At present, ...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M50/10H01M50/124
CPCH01M50/10H01M50/124Y02E60/10
Inventor 王长安
Owner 杭州中齐新材料科技有限公司
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