Title:
SECONDARY BATTERY, SECONDARY BATTERY MANUFACTURING DEVICE AND MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/050616
Kind Code:
A1
Abstract:
A secondary battery of the present invention comprises: an electrode assembly; an electrode lead; a battery case provided with a receiving part for receiving the electrode assembly, and a sealing part for sealing the receiving part; and a lead film. The sealing part, from which the electrode lead is drawn out, comprises: a connection sealing region connected to the receiving part; a front end sealing region positioned on the opposite side of the connection sealing region; and a reinforcement sealing region provided between the connection sealing region and the front end sealing region. The reinforcement sealing region comprises: a compressed surface which is provided in the sealing part between the connection sealing region and the front end sealing region, and is formed so as to be recessed into the sealing part; and an elevated surface which is provided in the sealing part between the connection sealing region and the compressed surface, and between the front end sealing region and the compressed surface, and is formed so as to be thicker than the compressed surface. The battery case has a structure in which a resin layer, a metal layer and an insulating layer are sequentially laminated in the direction from the inner side to the outer side. A resin layer of the elevated surface is formed so as to be thicker than a resin layer of the compressed surface.
Inventors:
HWANG WON PILL (KR)
NA SEUNG HO (KR)
BAE SANG HO (KR)
LEE KWAN BO (KR)
LEE YOON BEOM (KR)
KIM SHIN CHUL (KR)
JUNG SU TAEK (KR)
HAN CHANG MIN (KR)
NA SEUNG HO (KR)
BAE SANG HO (KR)
LEE KWAN BO (KR)
LEE YOON BEOM (KR)
KIM SHIN CHUL (KR)
JUNG SU TAEK (KR)
HAN CHANG MIN (KR)
Application Number:
PCT/KR2021/011211
Publication Date:
March 10, 2022
Filing Date:
August 23, 2021
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M50/116; B29C65/00; H01M50/124; H01M50/172; H01M50/543; H01M50/557
Foreign References:
| KR102065128B1 | 2020-01-10 | |||
| CN105470414A | 2016-04-06 | |||
| KR101925090B1 | 2018-12-04 | |||
| KR20110041071A | 2011-04-21 | |||
| KR20180028714A | 2018-03-19 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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