Title:
CASE FOR ELECTRIC POWER STORAGE DEVICE, AND ELECTRIC POWER STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/005114
Kind Code:
A1
Abstract:
This case for an electric power storage device comprises: a first valve unit that has a valve that opens when an internal pressure in a storage portion has exceeded a threshold value, the valve being provided, at a portion of a housing bottom portion that forms the storage portion, with a flat surface portion that is formed in a surface direction of the housing bottom portion and is constituted by a groove that is formed in the thickness direction of the housing bottom portion, the flat surface portion being formed having a predetermined area at the deepest position of the groove; and a second valve unit that has one end that is connected to the first valve unit and another end that is formed having a predetermined length in the outer peripheral direction of the storage portion, the second valve unit being provided with an inclined surface portion that alters the depth between the flat surface portion and the surface of the housing bottom portion. At least a plurality of the second valve unit are formed in different directions along the surface of the housing bottom portion, and an opening of the valve that faces the housing bottom portion has an opening width in a portion that is adjacent to the first valve unit that is greater than an opening width that is adjacent to the second valve unit. This makes it possible to restrict the operating range of the valve with respect to an increase in internal pressure in the case, and to control a state of discharge from the case interior when the valve is open.
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Inventors:
FUJITA TAKASHI (JP)
INOUE RYUUTA (JP)
YABE TAKAO (JP)
INOUE RYUUTA (JP)
YABE TAKAO (JP)
Application Number:
PCT/JP2023/024106
Publication Date:
January 04, 2024
Filing Date:
June 29, 2023
Export Citation:
Assignee:
NIPPON CHEMICON (JP)
International Classes:
H01G9/12; H01G9/00
Foreign References:
| JPH1022180A | 1998-01-23 | |||
| JP2000040646A | 2000-02-08 | |||
| JPS53154341U | 1978-12-05 |
Attorney, Agent or Firm:
UNEMOTO Shoichi et al. (JP)
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