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:
Oct. 13, 2015
Filed:
Mar. 18, 2010
Michio Yoshida, Miyoshi, JP;
Tadaichi Matsumoto, Okazaki, JP;
Atsushi Imai, Gamagori, JP;
Tomoya Ogawa, Toyota, JP;
Michio Yoshida, Miyoshi, JP;
Tadaichi Matsumoto, Okazaki, JP;
Atsushi Imai, Gamagori, JP;
Tomoya Ogawa, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, JP;
Abstract
A fuel cell system includes: a secondary cell; a voltage converter provided between the secondary cell and a load; a fuel cell; an FC relay that turns on and off electrical connection between the fuel cell and the shared electrical path; an electrical leakage detector that detects electrical leakage in an electrical system; and a control portion that performs determination regarding electrical leakage. The control portion has: start means for starting the fuel cell by raising voltage of the fuel cell from a starting voltage to an operation voltage that is lower than an open-circuit voltage; and electrical leakage determination means for performing the determination regarding electrical leakage after a predetermined time elapses, when the FC relay is closed while a voltage difference between the voltage of the fuel cell and voltage supplied from the voltage converter to the load is greater than a predetermined threshold value.