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. 09, 2014
Filed:
Apr. 10, 2012
Akira Gunji, Mito, JP;
Shin Takahashi, Mito, JP;
Hiroshi Iwasawa, Hitachi, JP;
Shin Yamauchi, Mito, JP;
Takefumi Okumura, Hitachinaka, JP;
Akira Gunji, Mito, JP;
Shin Takahashi, Mito, JP;
Hiroshi Iwasawa, Hitachi, JP;
Shin Yamauchi, Mito, JP;
Takefumi Okumura, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A lithium-ion rechargeable battery module having a plurality of lithium-ion battery cells, arranged that battery cells located at an high temperature portion of the module are electrically connected in parallel with battery cells located at a low temperature portion of the module. The battery cells at the high temperature portion have a higher electric resistance at 20° C. and a better high-temperature storage characteristic at 50° C. than those of the battery cells located at the low temperature portion.