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Lithium battery flexible packaging film with electrolyte-resistant polyester layer on surface, and preparation

A technology of flexible packaging film and polyester layer, which is applied in the direction of battery pack parts, battery box/cover, battery box/cover material, etc., and can solve problems such as product scrapping and corrosion

Inactive Publication Date: 2016-12-07
SHANGHAI ZIJIANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the surface of the existing flexible packaging film is a polyamide layer that is not resistant to the electrolyte, it is easily swelled and dissolved by the electrolyte. During production, the heat-resistant polyamide resin film on the surface will dissolve and corrode when it contacts the electrolyte, resulting in product scrapping

Method used

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  • Lithium battery flexible packaging film with electrolyte-resistant polyester layer on surface, and preparation

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0015] Such as figure 1 As shown, it is a schematic structural diagram of a lithium battery flexible packaging film with an electrolyte-resistant polyester layer on the surface. The lithium battery flexible packaging film with an electrolyte-resistant polyester layer on the surface includes a heat-resistant resin layer 1 arranged in sequence from the outside to the inside. , the aluminum foil core layer 2 and the thermoplastic resin layer 3, wherein the electrolyte-resistant polyester layer 4 is attached to the outer side of the heat-resistant resin layer 1 . The heat-resistant resin layer 1 and the aluminum foil core layer 2 are bonded by an adhesive 5, the aluminum foil core layer 2 and the thermoplastic resin layer 3 are bonded by an adhesive 5, and the heat-resistant resin The layer 1 is bonded to the electrolyte-resistant polyester layer 4 via an adhesive 5 .

[0016] The heat-resistant resin layer 1 is selected from Shanghai Zidong Chemical Co., Ltd. nylon 6 (polyamide)...

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Abstract

The invention provides a lithium battery flexible packaging film with an electrolyte-resistant polyester layer on a surface, and preparation. The lithium battery flexible packaging film with the electrolyte-resistant polyester layer on the surface is characterized by comprising a heat-resistant resin layer, an aluminum foil core layer and a thermoplastic resin layer which are arranged from outside to inside in sequence, wherein the electrolyte-resistant polyester layer is attached to the outer side of the heat-resistant resin layer. According to the lithium battery flexible packaging film with the electrolyte-resistant polyester layer on the surface, the heat-resistant resin film is not in contact with the electrolyte, so that product rejection caused by dissolution and corrosion can be avoided.

Description

technical field [0001] The invention relates to a composite flexible packaging film, in particular to a lithium battery flexible packaging film with an electrolyte-resistant polyester layer on the surface. Background technique [0002] In the lithium battery production process, the liquid injection process and the second sealing process are prone to electrolyte contamination of the surface of the flexible packaging film. Since the surface of the existing flexible packaging film is a polyamide layer that is not resistant to the electrolyte, it is easily swelled and dissolved by the electrolyte. During production, the heat-resistant polyamide resin film on the surface will dissolve and corrode when it contacts the electrolyte, resulting in product scrapping. Contents of the invention [0003] The object of the present invention is to provide a lithium battery flexible packaging film resistant to electrolyte. [0004] In order to achieve the above object, the present inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02B32B7/12B32B15/20B32B27/06
CPCB32B7/12B32B15/20B32B27/06B32B2307/752H01M50/116H01M50/124H01M50/1245Y02E60/10
Inventor 贺爱忠沈均平晁承鹏
Owner SHANGHAI ZIJIANG NEW MATERIAL TECH CO LTD