Lithium ion battery diaphragm and high temperature thermal-stable lithium ion battery

A lithium-ion battery and diaphragm technology, which is applied in the field of lithium-ion battery diaphragms and high-temperature thermally stable lithium-ion batteries, can solve problems such as equipment cost changes and raw material cost increases, and achieve improved safety and reliability, good insulation performance, and improved high temperature The effect of thermal stability

Inactive Publication Date: 2012-05-02
DONGGUAN ADVANCED ELECTRONICS TECH
View PDF3 Cites 82 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it brings changes in equipment

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
  • Lithium ion battery diaphragm and high temperature thermal-stable lithium ion battery
  • Lithium ion battery diaphragm and high temperature thermal-stable lithium ion battery
  • Lithium ion battery diaphragm and high temperature thermal-stable lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Hereinafter, specific embodiments of the present invention will be described in conjunction with the accompanying drawings.

[0030] Such as Figure 1 to Figure 6 As shown, the present invention is to make a nano-ceramic material coating 2 on the surface of a conventional lithium-ion battery separator polyolefin porous film 1 . Nano-ceramic material coating 2 adopts high-temperature-resistant ceramic materials, usually: nano-scale zirconia, aluminum oxide, silicon oxide, titanium oxide, silicon nitride, boron nitride, aluminum nitride and other metal and non-metal oxides, Nitrides of metals and nonmetals. Nano-ceramic material coating 2 can be on one side of polyolefin porous film 1 ( figure 2 ) or both sides ( image 3 )conduct. The nano-ceramic material coating 2 mainly includes metal and non-metal oxides, nitrides, binders, and other additive materials. The binder usually adopts PVDF commonly used in lithium-ion batteries, or SBR series, or sodium polyacrylate ...

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 provides a lithium ion battery diaphragm and a high temperature thermal-stable lithium ion battery, which relate to lithium ion batteries. The diaphragm comprises a polyolefin microporous membrane which acts as a basic layer, wherein a nano ceramic material coating is manufactured on one side surface or two side surfaces of the polyolefin microporous membrane; and compositions of the nano ceramic material coating comprise any one of a zirconium oxide, an aluminum oxide, a silicon oxide, a titanium oxide, a silicon nitride, a boron nitride and an aluminum nitride or a combination of any oxide and any nitride, and additionally comprise binders. Since a high temperature resistant nano ceramic material is led into the surface of a conventional diaphragm, an insulating property better than the insulating property of the conventional diaphragm is provided, further internal insulating property damage brought by thermal contraction of the conventional diaphragm, which leads to thermal runaway of the lithium battery, is avoided particularly at high temperatures of 130 DEG C, 150 DEG C and 180 DEG C, and thereby the high temperature thermal stability of the lithium ion battery is improved and the safe reliability of the lithium ion battery is increased.

Description

technical field [0001] The invention relates to a lithium-ion battery, in particular to a lithium-ion battery separator and a high-temperature heat-stable lithium-ion battery. Background technique [0002] Lithium-ion secondary batteries (referred to as lithium-ion batteries) are composed of positive electrodes, negative electrodes, electrolytes, separators, and packaging. The diaphragm is located between the positive and negative electrodes of the lithium-ion battery, separating the positive and negative electrodes, avoiding direct contact between the positive and negative electrodes to cause local short circuits, and reducing battery defects and reliability and safety issues caused by self-discharge. The commonly used lithium-ion battery separator material is polyolefin microporous film, generally a single-layer or multi-layer polyolefin composite film ( figure 1 ). At present, the commercial applications are polypropylene porous membrane (PP membrane), polyethylene poro...

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): H01M2/16H01M10/0525
CPCY02E60/122Y02E60/10
Inventor 刘勇标
Owner DONGGUAN ADVANCED ELECTRONICS TECH
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