Title:
METHOD FOR MANUFACTURING SECONDARY BATTERY, AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/054603
Kind Code:
A1
Abstract:
A method for manufacturing a secondary battery, according to the present invention, comprises: an accommodating step of accommodating an electrode assembly in a battery case, which includes an accommodation part in which the electrode assembly is accommodated and a gas pocket part connected to the accommodation part so as to collect gas generated from the inside of the accommodation part; a first sealing step of performing sealing along the outer surface of the battery case, except for the end portion of the gas pocket part; an electrolyte injecting step of injecting an electrolyte into the accommodation part through the end portion of the gas pocket part; a second sealing step of double-sealing the end portion of the gas pocket part, forming a first sealing part on the side that is close to the accommodation part, and forming a second sealing part on the side far therefrom; a second sealing part removing step of removing a portion of the battery case in which the second sealing part is formed; and a charging step of charging the electrode assembly by applying electricity thereto.
Inventors:
CHA IN YOUNG (KR)
Application Number:
PCT/KR2020/010210
Publication Date:
March 25, 2021
Filing Date:
August 03, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M10/04; H01M4/04; H01M10/058; H01M10/44
Foreign References:
| KR20140046174A | 2014-04-18 | |||
| KR20180059373A | 2018-06-04 | |||
| KR20190042797A | 2019-04-25 | |||
| KR20160080559A | 2016-07-08 | |||
| KR20190055594A | 2019-05-23 | |||
| KR20140015647A | 2014-02-07 |
Other References:
See also references of EP 3944386A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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