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:
Aug. 21, 2012
Filed:
Mar. 05, 2007
Satoshi Mogi, Yamato, JP;
Masaaki Shibata, Tokyo, JP;
Satoshi Mogi, Yamato, JP;
Masaaki Shibata, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A fuel cell stack is divided into a main power generation portion and a sub power generation portion. A variable load large in variation of output current is connected to the main power generation portion located upstream in a fuel flow and a steady load small in variation of output current is connected to the sub power generation portion located downstream in the fuel flow. This causes a fuel cell unit constituting the sub power generation portion to continue consuming a constant fuel by constant power generation and also causes hydrogen gas to continue flowing at a constant flow rate into the fuel cell unit, thereby preventing impurity gas concentrated and stored in the fuel cell unit from diffusing toward the upstream.