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Patent Searching and Data


Title:
POWER STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/073518
Kind Code:
A1
Abstract:
This power storage device has a case in which an electrode assembly is housed, and a pressure release valve that is disposed on the case and releases pressure inside the case outside of the case. The pressure release valve has arc sections constituting part of the edge of the pressure release valve, intersecting grooves, and a plurality of arc-shaped grooves that are joined to the ends of the intersecting grooves and follow the arc sections. When imaginary lines that extend along the intersecting grooves and intersect the edge of the pressure release valve are envisioned, a first region that is surrounded by the imaginary lines and the edge of the pressure release valve, and a second region that is surrounded by the imaginary lines and the edge of the pressure release valve, are envisioned. Portions that are in contact with the arc section of the first region are more numerous than portions that are in contact with the arc section of the second region. The area of the first region is larger than the area of the second region.

Inventors:
MATSUDO, Akihisa (2-1 Toyoda-cho, Kariya-sh, Aichi 71, 〒4488671, JP)
OKUDA, Motoaki (2-1 Toyoda-cho, Kariya-sh, Aichi 71, 〒4488671, JP)
TOMIOKA, Masami (2-1 Toyoda-cho, Kariya-sh, Aichi 71, 〒4488671, JP)
NISHIHARA, Hiroyasu (2-1 Toyoda-cho, Kariya-sh, Aichi 71, 〒4488671, JP)
KURITA, Mikiya (2-1 Toyoda-cho, Kariya-sh, Aichi 71, 〒4488671, JP)
Application Number:
JP2013/079855
Publication Date:
May 15, 2014
Filing Date:
November 05, 2013
Export Citation:
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Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI (2-1 Toyoda-cho, Kariya-shi Aichi, 71, 〒4488671, JP)
International Classes:
H01M2/12
Domestic Patent References:
WO2010100731A12010-09-10
Foreign References:
JP2012059496A2012-03-22
JP2011181214A2011-09-15
JP2010165590A2010-07-29
JP2011210485A2011-10-20
JP2005129524A2005-05-19
Attorney, Agent or Firm:
ONDA, Makoto et al. (12-1, Ohmiya-cho 2-chome Gifu-sh, Gifu 31, 〒5008731, JP)
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