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. 19, 2015
Filed:
Feb. 18, 2010
Mutsumi Kikuchi, Mito, JP;
Akihiko Kudo, Hitachinaka, JP;
Gosuke Shibahara, Chiba, JP;
Yoshinori Aoshima, Hitachinaka, JP;
Kenji Kubo, Hitachi, JP;
Yasuo Uemura, Naka, JP;
Mutsumi Kikuchi, Mito, JP;
Akihiko Kudo, Hitachinaka, JP;
Gosuke Shibahara, Chiba, JP;
Yoshinori Aoshima, Hitachinaka, JP;
Kenji Kubo, Hitachi, JP;
Yasuo Uemura, Naka, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
A battery system for a vehicle is provided with discharge circuits (RA throughD,A throughD) that discharge battery cells (BCthrough BC) via measurement lines of those battery cells (BCthrough BC). A control circuit transmits to an integrated circuit (A) a first discharge command that causes discharge of the odd numbered battery cells (BCand BC) of a cell group (GB), a first transmission command that causes transmission to the control circuit of the terminal voltages of only the odd numbered battery cells (BCand BC) measured during execution of the first discharge command, a second discharge command that causes discharge of the even numbered battery cells (BCand BC) of the cell group (GB), and a second transmission command that causes transmission to the control circuit of the terminal voltages of only the even numbered battery cells (BCand BC) measured during execution of the second discharge command; and, based on the these various terminal voltages transmitted from the integrated circuit (A), the control circuit diagnoses abnormalities in the system that includes the battery cells, the measurement lines, and the discharge circuits.