The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2025
Filed:
Dec. 24, 2021
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Yuki Sato, Toyota, JP;
Yozo Uchida, Toyota, JP;
Hideki Asadachi, Toyota, JP;
Syoichi Tsuchiya, Toyota, JP;
Masataka Asai, Toyota, JP;
Tsuyoshi Asano, Toyota, JP;
Masahiro Uchimura, Toyota, JP;
Nozomi Tateyama, Okazaki, JP;
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
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 LiPF, 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.