Title:
PRESSURE RELIEF VALVE FOR POWER STORAGE DEVICES
Document Type and Number:
WIPO Patent Application WO/2023/233687
Kind Code:
A1
Abstract:
Provided is a pressure relief valve for power storage devices which is easily attached to a case and is difficult to remove from the case. This pressure relief valve 10 for power storage devices has a cylindrical sealing member 20 and a valve unit 15, wherein: the valve unit 15 has a base member provided with a base member-side engagement part 45, a valve body 70, and a coil spring 90; the inner peripheral surface of the sealing member 20 is provided with a temporary engagement part 25 which engages with the base member-side engagement part 45 of the base member at a predetermined insertion position, and a main engagement part 26 which engages with the base member-side engagement part 45 of the base member at an insertion position deeper than the predetermined insertion position; the outer peripheral surface of the sealing member 20 is provided with a retaining part 27; and the retaining part 27 can be bent inward in a temporarily held state and the reduction in the diameter of the retaining part 27 is restricted by the base member in a mainly fixed state.
Inventors:
MIYAMAE HITOSHI (JP)
AONUMA TAKAHIRO (JP)
AONUMA TAKAHIRO (JP)
Application Number:
PCT/JP2022/044789
Publication Date:
December 07, 2023
Filing Date:
December 05, 2022
Export Citation:
Assignee:
PIOLAX INC (JP)
International Classes:
H01M50/308; H01M50/333
Foreign References:
| EP0756338A1 | 1997-01-29 | |||
| US4460661A | 1984-07-17 | |||
| JP2011222137A | 2011-11-04 | |||
| JP2020021897A | 2020-02-06 | |||
| JP2017096309A | 2017-06-01 |
Attorney, Agent or Firm:
DELOITTE TOHMATSU IP FIRM (JP)
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