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:
Sep. 23, 2025
Filed:
Nov. 23, 2022
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Takashi Hosokawa, Kako-gun, JP;
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
Abstract
The herein disclosed nonaqueous electrolyte secondary battery includes an electrode assembly in which a positive electrode including positive electrode active layers, a negative electrode including negative electrode active layers, and a separator are provided. The negative electrode active material layer includes a first area between an end side and a position 5 mm away from the end side in the width direction. An end part of the positive electrode is opposed to at least a part of the first area. A thickness Tat a central part of the positive electrode and a thickness Tat the end part of the positive electrode satisfy 0.95<T/T<1.05. Regarding the negative electrode active material layer, a basis weight Mat a central part of the negative electrode and a basis weight Mof an area opposed to the positive electrode active material layer of the first area satisfy 0.95<M/M