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:
Jul. 16, 2013
Filed:
Mar. 25, 2008
Akihiko Kudo, Ibaraki, JP;
Masaki Nagaoka, Ibaraki, JP;
Kenichiro Tsuru, Ibaraki, JP;
Mutsumi Kikuchi, Ibaraki, JP;
Tatsumi Yamauchi, Ibaraki, JP;
Akihiko Emori, Ibaraki, JP;
Akihiko Kudo, Ibaraki, JP;
Masaki Nagaoka, Ibaraki, JP;
Kenichiro Tsuru, Ibaraki, JP;
Mutsumi Kikuchi, Ibaraki, JP;
Tatsumi Yamauchi, Ibaraki, JP;
Akihiko Emori, Ibaraki, JP;
Hitachi Vehicle Energy, Ltd, Ibaraki, JP;
Abstract
A cell controller capable of ensuring high safety even when a short occurs among voltage detecting lines without causing increased costs is provided. The cell controllerincludes a unit cell voltage detecting sectionto detect a voltage of each unit cellconstituting a battery group through each voltage detecting line and a SOC adjusting circuit for adjusting a SOC of each unit cellhaving resistorsfor SOC adjustment, switching elements, and a bypass control sectionto exercise on/off control on the switching elements. Each resistoris connected in series to each voltage detecting line and the unit cell voltage detecting sectionto detect a voltage of each unit cellthrough each of the resistors. The bypass control sectionlets the switching elementscorresponding to the unit cellsto be SOC-adjusted enter an ON state at a time of adjusting a SOC, and control is exercised so that each resistorfor SOC adjustment is connected in series to each voltage detecting line led from each positive and negative electrode of each unit cellto be adjusted and each of the serially connected resistorsis connected in parallel to each unit cellto be adjusted.