Novel power lithium battery aluminum-plastic film

A lithium battery and aluminum-plastic film technology, which is applied in the field of aluminum-plastic film for new power lithium batteries, can solve the problems of inner layer composite strength drop and detachment

Pending Publication Date: 2018-07-24
CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, because the electrolyte of the battery cell exists in a liquid state, which contains small molecule solvents such as dimethyl carbonate, it has a strong swelling ability for general polyester materials, which will gradually reduce the composite strength of the inner layer, and even break away from the inner layer.

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
  • Novel power lithium battery aluminum-plastic film
  • Novel power lithium battery aluminum-plastic film
  • Novel power lithium battery aluminum-plastic film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An aluminum-plastic composite film, whose structure from the outer surface to the inner layer is a protective outer layer 1, an adhesive layer 2, a treatment layer 3, an aluminum foil layer 4, a special protective layer 5, a multifunctional inner layer 6, and a protective outer layer 1 It is a polyamide film with a thickness of 25 μm; the bonding layer 2 is a polyurethane adhesive; the treatment layer 3 is a nano-microporous treatment layer, and the treatment layer 3 penetrates into the middle aluminum foil layer 4 without forming a penetration, and the nanopore diameter is 100~300nm, the penetration depth is 300~700nm; the aluminum foil layer 4 is a 40μm alloy aluminum foil; the special protective layer 5 is a dense film layer formed by homogeneous particle arrangement, and the particle size is 200~300nm; the multifunctional inner layer 6 uses poly Acrylic material, thickness 46μm.

Embodiment 2

[0022] An aluminum-plastic composite film, whose structure from the outer surface to the inner layer is a protective outer layer 1, an adhesive layer 2, a treatment layer 3, an aluminum foil layer 4, a special protective layer 5, a multifunctional inner layer 6, and a protective outer layer 1 It is a polyamide film with a thickness of 25 μm; the bonding layer 2 is a polyurethane adhesive; the treatment layer 3 is a nano-microporous treatment layer, and the treatment layer 3 penetrates into the middle aluminum foil layer 4 without forming a penetration, and the nanopore diameter is 100~300nm, the penetration depth is 300~700nm; the aluminum foil layer 4 is a 40μm alloy aluminum foil; the special protective layer 5 is a dense film layer formed by homogeneous particle arrangement, and the particle size is 200~300nm; the multifunctional inner layer 6 uses poly Vinyl material, thickness 46μm.

Embodiment 3

[0024] An aluminum-plastic composite film, whose structure from the outer surface to the inner layer is a protective outer layer 1, an adhesive layer 2, a treatment layer 3, an aluminum foil layer 4, a special protective layer 5, a multifunctional inner layer 6, and a protective outer layer 1 It is a polyethylene terephthalate film with a thickness of 25 μm; the bonding layer 2 is a polyurethane adhesive; the treatment layer 3 is a nano-microporous treatment layer, and the treatment layer 3 penetrates into the middle aluminum foil layer 4 without forming Penetration, the nanopore diameter is 100~300nm, and the penetration depth is 300~700nm; the aluminum foil layer 4 is a 40μm alloy aluminum foil; the special protective layer 5 is a dense film layer formed by homogeneous particle arrangement, and the particle size is 200~300nm; The multifunctional inner layer 6 is made of polypropylene material with a thickness of 85 μm.

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
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of power lithium batteries, and especially relates to a novel power lithium battery aluminum-plastic film. The novel power lithium battery aluminum-plasticfilm sequentially comprises a protective outer layer, a bonding layer, a treatment layer, an aluminum foil layer, a special protective layer and a multifunctional inner layer from the outer surface to the inner surface, the protective outer layer is a polyethylene glycol terephthalate or polyamide film, the bonding layer is a modified polyurethane adhesive, the treatment layer is a nano-pore forming layer, the aluminum foil layer is an alloy aluminum foil, the special protective layer is a dense film protective layer, and the multifunctional inner layer is a polypropylene or polyethylene film. The structure of the treatment layer can improve the bonding effect between the outer surface and the intermediate layer of the aluminum-plastic composite film, greatly enhances the ductility of thealuminum-plastic composite film and improves the delamination phenomenon of the surface layer. The structure combination of the special protective layer and the multifunctional inner layer can improve the bonding effect of a heat sealing layer and an insulating layer, and the insulating layer has strong chemical resistance.

Description

technical field [0001] The invention relates to the technical field of power lithium batteries, in particular to a novel aluminum-plastic film for power lithium batteries. Background technique [0002] With the development requirements of mobile or small and medium-sized energy storage devices, especially the application development requirements for power lithium batteries in various shapes and states, there is an urgent need for an outer packaging material that can be shaped with a high degree of freedom and is convenient for packaging batteries. Manufactured, but the general aluminum-plastic composite film cannot meet the following requirements. [0003] Since the electrolyte used in the polymer lithium battery contains lithium hexafluorophosphate, the compound is unstable and will decompose into a strong acid after being subjected to external heating, moisture intrusion, etc. Therefore, there are extremely strong requirements on the overall insulation performance of the ...

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
IPC IPC(8): H01M2/02B32B7/02B32B15/20B32B27/30B32B27/32B32B27/34B32B27/36H01M50/10
CPCB32B7/02B32B15/20B32B27/30B32B27/32B32B27/34B32B27/36H01M50/10Y02E60/10
Inventor 单化众吕松梁俊杰
Owner CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap