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:
May. 15, 2012
Filed:
Jan. 25, 2010
Atsushi Kawasumi, Sumoto, JP;
Toru Nishikawa, Sumoto, JP;
Atsushi Kawasumi, Sumoto, JP;
Toru Nishikawa, Sumoto, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
The rechargeable battery abnormality detection apparatus is provided with an internal short circuit detection section () that monitors rechargeable battery () voltage change when no charging or discharging takes place, and detects internal short circuit abnormality when battery voltage drop during a predetermined time period exceeds a preset threshold voltage; a degradation appraisal section () that judges the degree of rechargeable battery degradation; and a threshold control section () that incrementally increases the threshold voltage according to the degree of degradation determined by the degradation appraisal section ().