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:
Nov. 16, 2010
Filed:
Jun. 03, 2005
Takeo Matsuzaki, Tokyo, JP;
Mitsugu Takahashi, Tokyo, JP;
Kazuhiko Kawajiri, Tokyo, JP;
Yoshiaki Odai, Tokyo, JP;
Kazunori Tsuchino, Tokyo, JP;
Takeo Matsuzaki, Tokyo, JP;
Mitsugu Takahashi, Tokyo, JP;
Kazuhiko Kawajiri, Tokyo, JP;
Yoshiaki Odai, Tokyo, JP;
Kazunori Tsuchino, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The output of a fuel cell stack is kept consumed in an external load through a power converter having a constant-current operating function for keeping an output current of the fuel cell stack at a constant value, until an output voltage of the fuel cell stack reaches an operable lower limit voltage value of the power converter after stopping the supply of oxidant-containing gas to a cathode while maintaining the supply of hydrogen-containing gas to an anode. When the output voltage of the fuel cell stack falls below the operable lower limit voltage value, the output of the fuel cell stack is connected to a short-circuit resistor. Thereafter, a reformer is stopped when the output voltage of the fuel cell stack reaches approximately zero.