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. 18, 2025
Filed:
Feb. 18, 2022
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Hiroki Nagai, Ama-gun, JP;
Takaaki Matsui, Toyota, JP;
Takafumi Nose, Nagoya, JP;
Koichiro Isobe, Toyota, JP;
Ryoichi Wakimoto, Kobe, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
Abstract
A power storage device includes a plurality of power storage cells. An end surface portion of a case has an aspect ratio of 1.4 or more. At least a part of a first region between a lower end of a sealing part projected image and an upper end of a principal surface region projected image receives a pressure of a first surface pressure. At least a part of a second region between the upper end of the principal surface region projected image and a lower end of the principal surface region projected image receives a pressure of a second surface pressure. The first surface pressure is higher than the second surface pressure and is 1.5 MPa or more and 3.5 MPa or less. A height of at least a part of the first region receiving the pressure of the first surface pressure is 1 mm or more.