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Safe high-performance lithium-ion battery membrane

A lithium-ion battery, high-performance technology, applied in the direction of secondary batteries, battery pack components, separators/films/diaphragms/spacers, etc., can solve problems such as explosion, combustion, and post-deformation lithium-ion batteries

Active Publication Date: 2015-12-23
SINOMA LITHIUM BATTERY SEPARATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the safety problems of combustion and explosion caused by thermal breakdown of the corresponding lithium-ion battery due to many problems such as flatness and post-deformation in the prior art, the present invention provides a safe and high-performance lithium-ion battery separator

Method used

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  • Safe high-performance lithium-ion battery membrane
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  • Safe high-performance lithium-ion battery membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Weigh 50kg of environmentally friendly paraffin oil of Suzhou Saipahan Special Oil Products Co., Ltd. product model SPH-400#, add a sonochemical mixer equipped with ultrasonic grinding, emulsification, dispersion and focusing (product of Hangzhou Success Ultrasonic Equipment Co., Ltd., product model: YP ) and the heating system of Zhongshi (Shanghai) Machinery Co., Ltd. product model ZHDS-22 double-shaft high-speed disperser, stirring slowly (stirring speed 60rpm) and heating to 160 ℃ at the same time; Weigh Jing Tianwei Chemical Co., Ltd. Antioxidant Add 0.04kg of 1010 model product, slowly add (adding time 15 minutes) into the paraffin oil in the above-mentioned dispersing equipment, turn on the ultrasonic equipment, 20Hz, 1000w, stirring speed 80rpm, stirring time 40 minutes; Weigh Shandong Zhenhua Industrial Co., Ltd. 0.006kg of hexametaphosphoric acid nano-dispersant with a molecular weight of 611.77 was slowly added to the above mixed solution, the addition time wa...

Embodiment 2

[0054]Weigh 50kg of environmentally friendly paraffin oil of Suzhou Saipahan Special Oil Products Co., Ltd. product model SPH-400#, add a sonochemical mixer equipped with ultrasonic grinding, emulsification, dispersion and focusing (product of Hangzhou Success Ultrasonic Equipment Co., Ltd., product model: YP ) and the heating system of Zhongshi (Shanghai) Machinery Co., Ltd. product model ZHDS-22 double-shaft high-speed disperser, stirring slowly (stirring speed 60rpm) and heating to 160 ℃ at the same time; Weigh Jing Tianwei Chemical Co., Ltd. Antioxidant 0.04kg of the 1010 model product was slowly added (adding time 15 minutes) into the paraffin oil in the above-mentioned dispersing equipment, turned on the ultrasonic equipment, 20Hz, 1000w, stirring speed 80rpm, stirring time 40 minutes; Weigh Sinoma Technology Membrane Materials Co., Ltd. High density polyethylene powder (particle size 50μm, density ASTMD-7920.948g / cm 3 Melt flow rate 190°C / 21.6kg) 1.5kg, slowly added to ...

Embodiment 3

[0059] The configuration of the coating solution: select 30kg of ZB0005 industrial special-grade deionized water from Shanghai Huanqi Environmental Protection Technology Co., Ltd., add a sonochemical mixer equipped with ultrasonic pulverization, emulsification, dispersion and focusing (product of Hangzhou Chenggong Ultrasonic Equipment Co., Ltd., product model: YP) and The heating system of Zhongshi (Shanghai) Machinery Co., Ltd. product model is ZHDS-22 double-shaft high-speed dispersing machine; select Guangdong Province Dongguan Jinhu Plastic Materials Co., Ltd. product polyvinylidene fluoride hexafluoropropylene (PVDF-HFP) 2kg was first uniformly dissolved in 3kg acetone (product of Shanghai Rongrong Chemical Co., Ltd.), slowly added in the above-mentioned deionized water, stirred while adding, adding time 20 minutes, stirring time 40 minutes, stirring speed 500rpm, ultrasonic wave 20Hz, 800w ( The whole compounding process does not stop); 4kg of high-purity silica sol from...

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Abstract

The invention discloses a safe high-performance lithium-ion battery membrane, which comprises a polyolefin microporous membrane and nano metal hydroxide coatings which are compounded on the upper surface and / or the lower surface of the polyolefin microporous membrane, or comprises an ultrahigh molecular weight polyethylene (UHMWPE) / high-density polyethylene (HDPE) / nano metal hydroxide microporous membrane, or comprises the UHMWPE / HDPE / nano metal hydroxide microporous membrane and nano metal hydroxide coatings which are compounded on the upper surface and / or the lower surface of the UHMWPE / HDPE / nano metal hydroxide microporous membrane. The three safe high-performance lithium-ion battery membranes disclosed by the invention have double safety guarantees of high-temperature self-closing holes and flame retardation; and the safety problem that an existing UHMWPE lithium-ion battery membrane does not have the self-closing holes or the flame retardant property is solved.

Description

technical field [0001] The invention relates to a safe and high-performance lithium ion battery separator, which belongs to the technical field of lithium ion battery separators. Background technique [0002] Lithium-ion batteries have received considerable attention as the most popular energy storage system for a wide variety of portable electronic devices including notebook computers, digital cameras, and mobile phones, and they are also the most promising candidates for large-scale power sources for electric vehicles and new smart grids One of the first, because they have several important advantages including high energy density, no memory effect, long cycle life and low self-discharge. [0003] In recent years, there have been intensive efforts to develop high-performance separators for rechargeable lithium-ion batteries for different applications such as portable electronic devices, electric vehicles, and grid energy storage. The separator is a key component of lithium...

Claims

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Application Information

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IPC IPC(8): H01M2/14H01M2/16H01M10/0525H01M50/403H01M50/417H01M50/489H01M50/491H01M50/581
CPCH01M10/0525H01M50/40H01M50/403H01M50/409Y02E60/10
Inventor 白耀宗宋尚军邓重义琚晓晖赵东波黄箭玲董浩宇李登科刘杲珺曲丽敏尹康
Owner SINOMA LITHIUM BATTERY SEPARATOR CO LTD
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