Title:
ELECTRODE ASSEMBLY, SECONDARY BATTERY COMPRISING SAME, SECONDARY BATTERY MANUFACTURING METHOD FOR MANUFACTURING SAME, AND SECONDARY BATTERY MANUFACTURING DEVICE USED THEREIN
Document Type and Number:
WIPO Patent Application WO/2023/043196
Kind Code:
A1
Abstract:
The present invention relates to an electrode assembly, a secondary battery comprising same, a secondary battery manufacturing method for manufacturing same, and a secondary battery manufacturing device used therein, and, more specifically to, an electrode assembly, a secondary battery comprising same, a secondary battery manufacturing method for manufacturing same, and a secondary battery manufacturing device used therein, the electrode assembly enabling a non-bonded area between an electrode and a separator inside a unit cell and a non-bonded area between a unit cell and a separator sheet inside the electrode assembly to be improved. The present invention provides a secondary battery manufacturing method comprising: a unit cell manufacturing step of manufacturing a unit cell including an electrode and a separator; an electrode assembly manufacturing step of manufacturing an electrode assembly by folding a plurality of unit cells and separator sheets such that same are alternately stacked; a correction step of correcting a height difference formed on the outer surface of the electrode assembly; and a pressing step of pressing the electrode assembly, wherein, in the correction step, a correction sheet is arranged in an area having a relatively low height with respect to the inner part of the electrode assembly, so that the height difference formed on the outer surface of the electrode assembly is corrected.
Inventors:
SONG EUI SEOB (KR)
PARK KI BEOM (KR)
LI ZHENG HUA (KR)
LEE HYO JOON (KR)
YEE MIN HA (KR)
SONG EUN JI (KR)
PARK KI BEOM (KR)
LI ZHENG HUA (KR)
LEE HYO JOON (KR)
YEE MIN HA (KR)
SONG EUN JI (KR)
Application Number:
PCT/KR2022/013735
Publication Date:
March 23, 2023
Filing Date:
September 14, 2022
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M10/04; H01M50/178; H01M50/531
Foreign References:
| KR20200095896A | 2020-08-11 | |||
| KR20200127759A | 2020-11-11 | |||
| KR20190091094A | 2019-08-05 | |||
| KR20210106254A | 2021-08-30 | |||
| KR20180006324A | 2018-01-17 | |||
| KR20210122787A | 2021-10-12 | |||
| KR20220115146A | 2022-08-17 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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