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:
Mar. 30, 2021
Filed:
Aug. 31, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Hiroya Umeyama, Okazaki, JP;
Tatsuya Hashimoto, Osaka, JP;
Naoyuki Wada, Hirakata, JP;
Yusuke Fukumoto, Toyonaka, JP;
Yuji Yokoyama, Moriguchi, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A flat-plate portion of a negative electrode composite material layer includes a first end portion at one end portion in a direction of axis of winding of a flat electrode winding assembly, a second end portion located opposite to the first end portion, and a central portion lying between the first end portion and the second end portion. The flat-plate portion of the negative electrode composite material layer is provided with a plurality of communication grooves. The communication groove includes a first terminal end portion at the first end portion, includes a second terminal end portion at the second end portion, includes in the central portion, a starting portion located closer to a bottom portion of a prismatic case relative to the first terminal end portion and the second terminal end portion, and extends from the starting portion toward the first terminal end portion and the second terminal end portion.