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:
Aug. 31, 2010
Filed:
Jul. 01, 2008
Motoyoshi Okumura, Chiryu, JP;
Katsunori Maegawa, Toyohashi, JP;
Motoyoshi Okumura, Chiryu, JP;
Katsunori Maegawa, Toyohashi, JP;
Panasonic EV Energy Co., Ltd., Kosai-shi, JP;
Abstract
A battery pack capable of sufficiently exhibiting performance of each secondary battery constituting the battery pack and its producing method are provided. The battery pack producing method of the invention comprises an obtaining process for obtaining a charge amountvoltage curve C during charging and a charge amountvoltage curve D during discharging, a selecting process for selecting more than one of the used secondary batteries close to each other in curves C and D from a group of the used secondary batteries whose curves C and D have been obtained, and an assembling process for combining the selected used secondary batteries to constitute the battery pack.