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Lithium ion battery provided with diaphragm

A lithium-ion battery and separator technology, applied in secondary batteries, battery pack components, circuits, etc., can solve problems such as explosion, hole breakage, and reduce the safety performance of lithium-ion batteries, and achieve high strength, oxidation resistance and thermal stability. Stable effect

Inactive Publication Date: 2018-03-27
SUZHOU GREEN POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the temperature inside the lithium-ion battery rises, the traditional lithium-ion battery separator will shrink, close the porous structure, and even melt and then appear holes, resulting in internal short circuit of the battery, combustion or even explosion, which seriously reduces the Safety Performance of Li-ion Batteries

Method used

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Examples

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Comparison scheme
Effect test

Embodiment Construction

[0018] The specific implementation of the present invention will be further described below in conjunction with the examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0019] The technical scheme of concrete implementation of the present invention is:

[0020] A lithium-ion battery with a diaphragm, including a lithium-ion battery cell, the lithium-ion battery cell is provided with a diaphragm, the diaphragm is composed of a base film and coatings covering both sides of the base film, and the base film is made of a polysulfone membrane Composite with non-woven fabric; the coating consists of the following components in parts by weight:

[0021] 3.7 parts ethylene glycol monostearate,

[0022] 4.2 parts dibutyl sebacate,

[0023] 0.9 parts of nano cerium oxide,

[0024] 1.4 parts phosphotungstic heteropoly acid,

[0025] 3.4 parts hydroxy...

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PUM

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Abstract

The invention discloses a lithium ion battery provided with a diaphragm. The lithium ion battery provided with the diaphragm comprises a lithium ion battery monomer, wherein the diaphragm is arrangedin the lithium ion battery monomer, and the diaphragm is composed of a basement membrane and a coating covering the two sides of the basement membrane; and each of the coatings is composed of the following components: ethylene glycol monostearate, dibutyl sebacate, nano cerium oxide, phosphotungstic heteropoly acid, hydroxy propyl cellulose, sodium dodecyl sulfate, diethylhexyl carbonate, ethyl acrylate, sodium tripolyphosphate and ceramic powder. The lithium ion battery provided with the diaphragm has the characteristics that the diaphragm is arranged in the lithium ion battery monomer and the diaphragm has the characteristics of high strength and strong oxidation resistance and thermostability.

Description

technical field [0001] The invention relates to a lithium-ion battery with a diaphragm. Background technique [0002] Lithium-ion batteries are used in a wide range of fields, including electronic terminal equipment such as mobile phones and laptop computers, and even to the fields of electric vehicles and energy storage technology; lithium-ion batteries are structurally divided into positive electrodes, negative electrodes, diaphragms, electrolytes, and shells. Among them, the separator is used to block the positive and negative electrodes of the battery, preventing the internal short circuit of the battery, but allowing lithium ions to pass through quickly. [0003] However, when the temperature inside the lithium-ion battery rises, the traditional lithium-ion battery separator will shrink, close the porous structure, and even melt and then appear holes, resulting in internal short circuit of the battery, combustion or even explosion, which seriously reduces the Safety pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/14H01M2/16H01M10/0525H01M50/414H01M50/446H01M50/451
CPCH01M10/0525H01M50/40H01M50/411Y02E60/10
Inventor 王海波
Owner SUZHOU GREEN POWER TECH CO LTD
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