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:
Dec. 30, 2025
Filed:
Jan. 22, 2018
Aesc Japan Ltd., Zama, JP;
Kenji Watanabe, Sagamihara, JP;
AESC Japan Ltd., Zama, JP;
Abstract
Described is a lithium ion battery comprising terminals and more than one power generation element, each having current collectors. Each negative electrode current collector having an uncoated portion including an angled portion, wherein an end portion thereof and an end portion on an inner side of a negative electrode terminal are joined with each other in a negative electrode joint portion by welding. The end portion on the uncoated portion of a negative electrode current collector and end portions of the uncoated portions of the other negative electrode current collectors are overlapped and joined with each other at a negative electrode joint portion. The lithium ion battery further comprises a first non-joint portion in which a most distal end portion on the uncoated portion of each negative electrode current collector is overlapped, but not welded to each other or the negative electrode terminal. The first non-joint portion extends from a distal edge portion of the uncoated portion of each negative electrode current collector to the negative electrode joint portion in a direction opposite to a predetermined one direction and a maximum length of the first non-joint portion in the predetermined one direction is specified. Variants and alternatives are also described.