Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of lithium-ion battery soft coating inner layer material and preparation method thereof

A lithium-ion battery, soft coating technology, applied in secondary batteries, battery pack parts, chemical instruments and methods, etc., can solve the problem of low puncture resistance, poor adhesion of aluminum foil, high temperature heat sealing of polypropylene film Insufficient strength and other problems to achieve the effect of solving insufficient toughness, enhancing puncture resistance and good adhesion

Active Publication Date: 2019-11-08
ZHEJIANG GREAT SOUTHEAST PACKAGING
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of existing polypropylene films such as insufficient high-temperature heat-sealing strength, low adhesion to aluminum foil, and low puncture-resistant strength, the present invention provides a high-temperature heat-sealing strength, high adhesion to aluminum foil, and puncture-resistant Lithium-ion battery soft coating inner layer material with higher strength and preparation method thereof

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of lithium-ion battery soft coating inner layer material and preparation method thereof
  • A kind of lithium-ion battery soft coating inner layer material and preparation method thereof
  • A kind of lithium-ion battery soft coating inner layer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] A method for preparing the inner layer material of a lithium-ion battery soft coating, the inner layer material is cast polypropylene film, adopting a three-layer structure, from top to bottom are respectively a heat-sealing layer 1, a core layer 2 and a corona layer 3. The heat-sealing layer includes binary copolymerized polypropylene, anti-adhesive agent and slippery agent, and the mass-number ratio of the binary copolymerized polypropylene, anti-adhesive agent and slippery agent is 100:1-3:0.3 -1.5; the core layer includes binary copolymerized polypropylene and slippery agent, and the mass and number ratio of the binary copolymerized polypropylene and slippery agent is: 100: (1-3); the corona layer includes The mixture of binary copolymerized polypropylene, ternary copolymerized polypropylene, carboxyl-terminated polybutadiene liquid rubber and anti-adhesive agent, the mass and number ratio of said binary copolymerized polypropylene, ternary copolymerized polypropylen...

example 1

[0044] Example 1: a kind of lithium-ion battery soft envelope inner layer material, described inner layer material is film casting polypropylene film 1#, wherein,

[0045] The heat-sealing layer adopts 100 parts of binary copolymerized polypropylene CF330, 1 part of anti-adhesive agent, and 0.35 parts of slippery agent.

[0046] The core layer adopts 100 parts of binary copolymerized polypropylene F800E and 1 part of slip agent.

[0047] The corona layer adopts 100 parts of binary copolymerized polypropylene (RF401), 5 parts of ternary copolymerized polypropylene (FL7540), 1 part of anti-sticking agent (AB6018CPP of Constamp); the carboxyl-terminated polybutadiene liquid rubber The mixing method of the mixture is an impregnation method, and the impregnation ratio concentration with the ternary copolymerized polypropylene is 0.01%.

[0048] This embodiment adopts a three-layer co-extrusion production process, and the process parameters are: corona: 25kw, casting roll temperatu...

example 2

[0049] Example 2: a kind of lithium-ion battery soft envelope inner layer material, described inner layer material is casting polypropylene film 2#, wherein,

[0050] The heat-sealing layer adopts 100 parts of binary copolymerized polypropylene (RF402), 2 parts of anti-adhesive agent, and 1 part of slippery agent.

[0051] The core layer adopts 100 parts of binary copolymerized polypropylene (RF402) and 2 parts of slippery agent.

[0052] The corona layer adopts 100 parts of binary copolymerized polypropylene (RF401), 10 parts of ternary copolymerized polypropylene (FL7540), 2 parts of anti-sticking agent (AB6018CPP of Constamp); the carboxyl-terminated polybutadiene liquid rubber The mixing method of the mixture is an impregnation method, and the impregnation ratio concentration with the ternary copolymerized polypropylene is 0.1%.

[0053] This embodiment adopts a three-layer co-extrusion production process, and the process parameters are: corona: 25kw, casting roll tempera...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A kind of lithium-ion battery soft coating inner layer material, the inner layer material is cast polypropylene film, adopts three-layer structure, respectively is heat-sealing layer, core layer and corona layer from top to bottom; Copolymerized polypropylene, anti-adhesive agent and smooth agent, its mass and number ratio is 100: (1-3): (0.3-1.5); core layer includes binary copolymerized polypropylene and smooth agent, its mass and number ratio For: 100: (1‑3); the corona layer includes a mixture of binary copolymerized polypropylene, terpolymerized polypropylene, carboxyl-terminated polybutadiene liquid rubber and an anti-adhesive agent, and its mass-number ratio is: 100: (5-20): (1-3); the mixture of carboxyl-terminated polybutadiene liquid rubber is mixed in the dipping method, and the dipping ratio concentration with terpolymerized polypropylene is 0.01%-1%. And a preparation method of the inner layer material of the soft coating of the lithium ion battery. The invention has better high-temperature heat-sealing strength, higher adhesiveness with aluminum foil, and higher puncture-resistant strength.

Description

technical field [0001] The invention relates to a soft coating inner layer material of a lithium ion battery and a preparation method thereof. Background technique [0002] Lithium-ion batteries can be divided into steel shells, aluminum shells, cylinders, flexible packaging and other series according to their appearance. Soft-packed lithium-ion batteries have been widely used in mobile phones, computers, DVD players, camcorders, power tools and other electronic products due to their advantages of good safety performance, light weight, large capacity, small internal resistance, and flexible design. The structure of the soft-packed lithium-ion battery is packaged with aluminum-plastic film. The aluminum-plastic film is roughly divided into three layers. Damage to the battery plays a role in protecting the battery. The middle layer is aluminum foil, which has good water vapor barrier performance, which can effectively prevent the infiltration of water vapor from the outside ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/06B32B25/16B32B25/08B32B33/00B29C48/18B29C71/04H01M2/02H01M10/0525H01M50/116H01M50/124
CPCY02E60/10
Inventor 黄飞刚冯叶飞高新梅铜简
Owner ZHEJIANG GREAT SOUTHEAST PACKAGING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com