Title:
BATTERY CASE FOR SECONDARY BATTERY, AND METHOD FOR MANUFACTURING POUCH-TYPE SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/040377
Kind Code:
A1
Abstract:
A battery case for a secondary battery according to an embodiment of the present invention for solving said problem comprises: a cup part provided with an accommodation space for accommodating an electrode assembly formed by laminating electrodes and separation membranes; a sealing part extending in an outward direction from the cup part; a gas discharge part which is attached from the outside to a hole formed by perforating at least one of the cup part and the sealing part, and through which gas passes; and a coating part coating the inner circumferential surface of the hole and having electrolyte resistance, wherein the gas discharge part has a gas discharge layer through which gas passes, and an external functional layer that is formed on the outer surface of the gas discharge layer and has hydrophobic properties.
Inventors:
HWANG SOO JI (KR)
KIM SANG HUN (KR)
CHOI YONG SU (KR)
KIM SANG HUN (KR)
CHOI YONG SU (KR)
Application Number:
PCT/KR2020/011312
Publication Date:
March 04, 2021
Filing Date:
August 25, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M2/12; H01M2/02
Foreign References:
| KR20150034498A | 2015-04-03 | |||
| KR20150135878A | 2015-12-04 | |||
| KR20170057297A | 2017-05-24 | |||
| KR20170011358A | 2017-02-02 | |||
| KR20100109341A | 2010-10-08 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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