Title:
蓋体および密閉型電池
Document Type and Number:
Japanese Patent JP7296933
Kind Code:
B2
Abstract:
A lid body includes a terminal member of at least one of a positive electrode and a negative electrode, a sealing plate including an attachment hole for attaching the terminal member, and a sealing material containing a thermoplastic resin and an inorganic filler. The terminal member is inserted into the attachment hole and attached to the sealing plate in a state in which the sealing material is joined to a peripheral portion of the attachment hole. Here, as the inorganic filler, an inorganic substance having a volume change rate of 20% or less after being immersed for 7 days in a test electrolyte, which is prepared at 65° C., and which contains 1200 ppm of water and 1 M of LiPF6, and moreover in which a volume ratio of a solvent thereof satisfies a relationship of ethylene carbonate:diethyl carbonate:dimethyl carbonate=1:1:1, is used.
Inventors:
Yuki Sato
Youzo Uchida
Hideki Asatachi
Shoichi Tsuchiya
Masataka Asai
Takeshi Asano
Masahiro Uchimura
Nozomi Tateyama
Youzo Uchida
Hideki Asatachi
Shoichi Tsuchiya
Masataka Asai
Takeshi Asano
Masahiro Uchimura
Nozomi Tateyama
Application Number:
JP2020218808A
Publication Date:
June 23, 2023
Filing Date:
December 28, 2020
Export Citation:
Assignee:
Prime Planet Energy & Solutions Co., Ltd.
TOYOTA JIDOSHA KABUSHIKI KAISHA
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M50/195; H01M50/15; H01M50/176; H01M50/188; H01M50/191; H01M50/193; H01M50/198
Domestic Patent References:
| JP2012131896A | ||||
| JP2008027823A | ||||
| JP2017117560A | ||||
| JP2019169272A | ||||
| JP2008311217A |
Foreign References:
| WO2017119485A1 |
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Hiroaki Yamane
Koji Amano
Michiko Oi
Hiroaki Yamane
Koji Amano