Title:
METHOD FOR PREPARING LITHIUM-ION BATTERY SEPARATOR
Document Type and Number:
WIPO Patent Application WO/2017/152731
Kind Code:
A1
Abstract:
Disclosed is a method for preparing a lithium-ion battery separator. The method comprises: performing cooling, molding, stretching, and reaming on a liquid phase stable system that contains polyethylene, and then performing solvent extraction and thermoforming to obtain a lithium-ion battery separator, wherein the stretching and reaming processes comprise prestretching and simultaneous bidirectional stretching, and the prestretching is completed before the simultaneous bidirectional stretching.
Inventors:
CHENG YUE (CN)
ZHANG ZULAI (CN)
SU XIAOMING (CN)
WANG WEIQIANG (CN)
HE FANGBO (CN)
CHEN YONGLE (CN)
ZHANG ZULAI (CN)
SU XIAOMING (CN)
WANG WEIQIANG (CN)
HE FANGBO (CN)
CHEN YONGLE (CN)
Application Number:
PCT/CN2017/073087
Publication Date:
September 14, 2017
Filing Date:
February 08, 2017
Export Citation:
Assignee:
SHANGHAI ENERGY NEW MAT TECH CO LTD (CN)
International Classes:
H01M50/403; H01M50/417; H01M50/489
Domestic Patent References:
| WO2009084719A1 | 2009-07-09 |
Foreign References:
| CN105552280A | 2016-05-04 | |||
| CN104327351A | 2015-02-04 | |||
| CN102241832A | 2011-11-16 | |||
| CN102850573A | 2013-01-02 |
Other References:
See also references of EP 3428996A4
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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