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. 19, 2013
Filed:
Jul. 15, 2010
Mami Mizutani, Hachioji, JP;
Ryuichi Morikawa, Higashimurayama, JP;
Masahiro Tohara, Fuchu, JP;
Shinichiro Kosugi, Saku, JP;
Mami Mizutani, Hachioji, JP;
Ryuichi Morikawa, Higashimurayama, JP;
Masahiro Tohara, Fuchu, JP;
Shinichiro Kosugi, Saku, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one of the embodiment, an assembled battery has a plurality of cells electrically connected in series. A charge amount difference detection circuit detects charge amount difference of the cells. Wherein, while a charging or discharge current is being applied to the cells, the charge amount difference detection circuit detects charge amount differences greater than a charge amount of a reference cell having a minimum charge amount, the charge amount differences of the cells are determined by addition of the charging or discharge currents during a period corresponding to the time differences between the reference cell and the other cells reaching a predetermined specific voltage, discharge switches are controlled by a switch controller, based on the charging amount differences.