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Title:
POWER STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/030279
Kind Code:
A1
Abstract:
A power storage device (10) is provided with: positive electrodes (21) having a positive electrode current collector (21a) and a positive electrode active material layer (21b); negative electrodes (22) having a negative electrode current collector (22a) and a negative electrode active material layer (22b); separators (23) that are arranged between the positive electrode active material layer (21b) and the negative electrode active material layer (22b); and sealing parts (24) for forming a sealed space accommodating a liquid electrolyte between the positive electrode (21) and the negative electrode (22).　One of the positive electrode current collector (21a) and the negative electrode current collector (22a) is aluminum foil having a thickness of 1-50 μm. The other of the positive electrode current collector (21a) and the negative electrode current collector (22a) is aluminum foil having a thickness of 1-50 μm, or copper foil having a thickness of 1-25 μm. The sealing part (24) is constituted by a thermoplastic polyolefin resin, the thermoplastic polyolefin resin having a peak top temperature, which is a welding temperature at which bonding strength reaches a maximum, of 135°C or lower.

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Inventors:
KINUGAWA TATSUYA (JP)
SUGIOKA TAKAHIRO (JP)
SUGIYAMA YUSUKE (JP)
YAMAJI TOMOYA (JP)
Application Number:
PCT/JP2021/027508
Publication Date:
February 10, 2022
Filing Date:
July 26, 2021
Export Citation:
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Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
H01M4/66; H01G11/70; H01G11/80; H01M10/04; H01M10/0585; H01M50/184; H01M50/193; H01M50/198; H01M50/528
Domestic Patent References:
WO2017094591A12017-06-08
WO2019230219A12019-12-05
Foreign References:
JPH03230477A1991-10-14
JPH03163756A1991-07-15
JP2012022821A2012-02-02
JP2002260602A2002-09-13
JP2016042459A2016-03-31
Attorney, Agent or Firm:
SATO Tsutomu et al. (JP)
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