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. 08, 2007
Filed:
Aug. 03, 2005
Noriaki Hino, Mito, JP;
Shinichi Fujino, Mito, JP;
Hiroshi Kanazawa, Hitachiota, JP;
Toshiyuki Innami, Mito, JP;
Takashi Kobayashi, Hitachiota, JP;
Noriaki Hino, Mito, JP;
Shinichi Fujino, Mito, JP;
Hiroshi Kanazawa, Hitachiota, JP;
Toshiyuki Innami, Mito, JP;
Takashi Kobayashi, Hitachiota, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An A.C. generator has a rotor that is equipped with a permanent magnet and a field coil. The output of the A.C. generator charges the high-voltage battery. Voltage of the high-voltage battery is stepped-down by a DC/DC converter and supplied to the low-voltage battery. When the motor controller detects that the field coil has not been energized, the higher-rank controller switches so as to generate power by means of the permanent magnet of the A.C. generator and charge the low-voltage battery. This mechanism enables power to be generated when a circuit malfunctions. Thereby, a power supply system for vehicle can generate power when a circuit malfunctions so that the driver on the vehicle can drive the vehicle to a repair shop.