Title:
POWER STORAGE DEVICE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/080144
Kind Code:
A1
Abstract:
This power storage device comprises: a case (exterior case 4) having a housing portion (6); a power storage element (8) having electrode tabs (anode tabs 10 and cathode tabs 12) formed on winding end faces thereof, and housed in the housing portion; a seal member (18) disposed in the housing portion with a peripheral surface of the seal member (18) press-fitted on an inner wall surface of the case due to swaging (swaging portion 30) from the outer peripheral side of the case, the seal member (18) sealing an opening portion of the housing portion; a support plate (current collector plate 14) in contact with and supporting a surface of the seal member facing the bottom portion of the housing portion; and a support member (folder 20) disposed on one of surfaces of the seal member facing the opening portion of the housing portion, the support member pressing and supporting the seal member by engagement with an opening edge (36) of the case (vertical swaging portion 32) swaged toward the bottom portion of the housing portion. This stabilizes the state of seal of the case by the seal member against a pressure increase in the case.
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Inventors:
YASUDA RYOICHI (JP)
TSUMEDA SATORU (JP)
KUROKI TAKASHI (JP)
TSUMEDA SATORU (JP)
KUROKI TAKASHI (JP)
Application Number:
PCT/JP2022/040948
Publication Date:
May 11, 2023
Filing Date:
November 02, 2022
Export Citation:
Assignee:
NIPPON CHEMICON (JP)
International Classes:
H01G9/08; H01G9/10; H01G11/70; H01G11/74; H01G11/80; H01G11/82; H01G11/84
Domestic Patent References:
| WO2004084246A1 | 2004-09-30 | |||
| WO2014199639A1 | 2014-12-18 |
Foreign References:
| JPS3812051Y1 | 1963-06-18 | |||
| JPH10275751A | 1998-10-13 | |||
| JPS4720195Y1 | 1972-07-07 | |||
| JP2015213137A | 2015-11-26 |
Attorney, Agent or Firm:
UNEMOTO Shoichi et al. (JP)
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