Fuel-cell system and method for scavenging fuel cell

Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for control of operation

Reexamination Certificate

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Details

C429S400000, C429S428000, C429S443000

Reexamination Certificate

active

08007945

ABSTRACT:
A fuel-cell system1includes: a fuel cell13configured to generate electricity through reaction between hydrogen gas and air; a compressor12configured to supply air as a scavenging gas to a reactant gas path13aof the fuel cell13; a control part18configured to control an amount of air supplied from the compressor12to the fuel cell13to perform scavenging of the fuel cell13; and pressure sensors P1and P2configured to monitor a pressure drop in the reactant gas path13aof the fuel cell13. The control part18controls an amount of supplied air so as to keep the pressure drop in the reactant gas path13asubstantially constant when the fuel cell13is scavenged. With this configuration, residual water can be suitably purged from the fuel cell while energy consumption is suppressed.

REFERENCES:
patent: 2005/0053814 (2005-03-01), Imamura et al.
patent: 2005/0214605 (2005-09-01), Saitoh et al.
patent: 2001-338671 (2001-12-01), None
patent: 2002-313395 (2002-10-01), None
patent: 2003-104707 (2003-04-01), None
patent: 2004-265684 (2004-09-01), None
Japanese Office Action for Application No. 2005-229030, dated Mar. 22, 2011.

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