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:
Sep. 18, 2012
Filed:
Jun. 12, 2008
Masahiro Takada, Shizuoka, JP;
Takashi Akiyama, Osaka, JP;
Masahiro Takada, Shizuoka, JP;
Takashi Akiyama, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A fuel cell system includes: a fuel cell stack including a plurality of fuel cells connected in series; a fuel supply portion supplying a fuel to each fuel cell; a current regulation portion regulating an electric current flowing from the fuel cell stack in such a way that an output voltage of the fuel cell stack is a predetermined set voltage; a voltage detection portion detecting an output voltage of each fuel cell; a fuel-supply control portion regulating a fuel supply to each fuel cell by the fuel supply portion in such a way that the difference decreases between an output voltage of each fuel cell detected by the voltage detection portion; a fuel-stoichiometric ratio detection portion detecting a fuel stoichiometric ratio of the fuel cell stack; and a fuel-stoichiometric ratio control portion regulating the set voltage in such a way that a fuel stoichiometric ratio detected by the fuel-stoichiometric ratio detection portion is a target fuel stoichiometric ratio set in advance.