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:
Jul. 01, 2014
Filed:
Jun. 15, 2009
Mitsunori Kumada, Yokosuka, JP;
Ryoichi Shimoi, Yokohama, JP;
Hayato Chikugo, Yokosuka, JP;
Takashi Aoyama, Yokohama, JP;
Mitsunori Kumada, Yokosuka, JP;
Ryoichi Shimoi, Yokohama, JP;
Hayato Chikugo, Yokosuka, JP;
Takashi Aoyama, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
Deterioration at the start-up and deterioration during the leaving period are suppressed in a good balance. As a system shutdown process, a controller () causes consumption of the air (oxygen) present in an oxidant electrode of a fuel cell stack () (oxygen consumption control). Further, after the termination of the oxygen consumption control, the controller () performs control to set a medium pressure hydrogen valve () and a hydrogen pressure adjustment valve () in a closed state. The controller () thereby causes hydrogen to be held in a passage located between the medium pressure hydrogen valve () and the hydrogen pressure adjustment valve (). During a system shutdown period, a predetermined amount of hydrogen (medium pressure hydrogen) held in the hydrogen supply passage (L) at a position between the medium pressure hydrogen valve () and the hydrogen pressure adjustment valve () can be supplied to the fuel electrode of the fuel cell stack () through a bypass passage (L).