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:
Jan. 24, 2012
Filed:
Oct. 24, 2008
Hiroshi Morikawa, Shioya-gun, JP;
Yoichi Asano, Utsunomiya, JP;
Jun Takano, Shimotsuke, JP;
Chihiro Wake, Utsunomiya, JP;
Hiroshi Morikawa, Shioya-gun, JP;
Yoichi Asano, Utsunomiya, JP;
Jun Takano, Shimotsuke, JP;
Chihiro Wake, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A fuel cell having an oxygen-containing gas flow field and a fuel gas flow field, an oxygen-containing gas supply apparatus for supplying an oxygen-containing gas to the oxygen-containing gas flow field, a fuel gas supply apparatus for supplying a fuel gas to the fuel gas flow field, a scavenging gas supply apparatus for supplying air as a scavenging gas to the fuel gas flow field, and a controller are provided. The controller includes a voltage detection unit for detecting the voltage of the fuel cell after operation of the fuel cell is stopped and a scavenging control unit for starting scavenging in the fuel gas flow field by the scavenging gas supply apparatus after the detected voltage is decreased temporarily, increased, and decreased again to become a preset voltage or less.