Title:
POLYMER COMPOSITE FILM, PREPARATION METHOD THEREFOR, AND LITHIUM-ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2018/121180
Kind Code:
A1
Abstract:
Disclosed are a polymer composite film, a preparation method therefor, and a lithium-ion battery comprising the same. The polymer composite film comprises a porous basement film and a heat-resistant layer covering on at least one side surface of the porous basement film, the heat-resistant layer comprises multiple sub heat resistant layers sequentially stacked, and the hole closing temperature of each sub heat-resistant layer in a direction from the inside to the outside gradually increases. Each sub heat-resistant layer comprises a first heat-resistant polymer material and/or a second heat-resistant polymer material and separately has a fiber network structure. The melting point of the first heat-resistant polymer material is not less than 200ºC, and the melting point of the second heat-resistant polymer material is not less than 100ºC.
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Inventors:
HU JIALING (CN)
SHAN JUN (CN)
HE LONG (CN)
SHAN JUN (CN)
HE LONG (CN)
Application Number:
PCT/CN2017/114316
Publication Date:
July 05, 2018
Filing Date:
December 01, 2017
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
H01M10/0525; H01M50/403; H01M50/417; H01M50/42; H01M50/423; H01M50/434; H01M50/449; H01M50/451; H01M50/454; H01M50/457; H01M50/491
Foreign References:
| CN103531736A | 2014-01-22 | |||
| CN101511589A | 2009-08-19 | |||
| CN102487131A | 2012-06-06 | |||
| CN201410453322A | 2014-09-05 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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