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.

Date of Patent:
Mar. 03, 2015

Filed:

May. 17, 2011
Applicants:

Masahiro Mohri, Utsunomiya, JP;

Yasunori Kotani, Utsunomiya, JP;

Chikara Iwasawa, Saitama, JP;

Junji Uehara, Utsunomiya, JP;

Hiroto Chiba, Utsunomiya, JP;

Osamu Ohgami, Utsunomiya, JP;

Hiroaki Ohta, Utsunomiya, JP;

Inventors:

Masahiro Mohri, Utsunomiya, JP;

Yasunori Kotani, Utsunomiya, JP;

Chikara Iwasawa, Saitama, JP;

Junji Uehara, Utsunomiya, JP;

Hiroto Chiba, Utsunomiya, JP;

Osamu Ohgami, Utsunomiya, JP;

Hiroaki Ohta, Utsunomiya, JP;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 8/04 (2006.01);
U.S. Cl.
CPC ...
H01M 8/04223 (2013.01); H01M 8/04 (2013.01); Y02E 60/50 (2013.01);
Abstract

A method of starting operation of a fuel cell stack includes the steps of performing gas replacement by supplying a fuel gas to a fuel gas flow field from a downstream side of the fuel gas flow field through a fuel gas discharge passage, and supplying an oxygen-containing gas to an oxygen-containing gas flow field from an upstream side of the oxygen-containing gas flow field through an oxygen-containing gas supply passage. After the step of performing gas replacement, normal power generation is carried out by supplying the fuel gas to the fuel gas flow field from an upstream side of the fuel gas flow field through a fuel gas supply passage, and supplying the oxygen-containing gas to the oxygen-containing gas flow field from the upstream side of the oxygen-containing gas flow field through the oxygen-containing gas supply passage.


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