FUEL CELL SYSTEM

WIPO Patent Application WO/2011/010365

A1

Provided is a fuel cell system capable of suppressing the temperature change of a fuel cell under a low temperature environment after operation is stopped, preventing freezing due to dew formation, and ensuring reliable start-up after that. The fuel cell system comprises: a fuel cell (20) for generating electricity by an electrochemical reaction between air and hydrogen gas; a gas supply unit for supplying, by means of a compressor (A3) and a hydrogen pump (H50), air and hydrogen gas to an air supply path (71), a fuel supply path (74), and a hydrogen circulation path (75) all connected to the fuel cell (20); a cooling unit for cooling the fuel cell (20) by circulating, by means of a pump (C1), the cooling water cooled by a radiator (C2) in a cooling path (73) connected to the fuel cell (20); and a control unit (50) for, when it is determined that the temperature of the fuel cell (20) becomes below freezing point after the fuel cell (20) stops generating electricity, controlling the gas supply unit to perform a scavenging process for scavenging the insides of the air supply path (71), the fuel supply path (74), and the hydrogen circulation path (75) and controlling the cooling unit to perform a cooling process for cooling the fuel cell (20).

YUMITA OSAMU (JP)

PCT/JP2009/063064

January 27, 2011

July 21, 2009

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TOYOTA MOTOR CO LTD (JP)
YUMITA OSAMU (JP)

H01M8/04

WO2008142972A1

2008-11-27

JP2002246053A	2002-08-30
JP2007042445A	2007-02-15
JP2008166126A	2008-07-17
JP2007164998A	2007-06-28
JP2008218289A	2008-09-18
JP2004193102A	2004-07-08
JP2007328972A	2007-12-20
JP2006147452A	2006-06-08
JP2008525980A	2008-07-17
JP2006286483A	2006-10-19
JP2009032610A	2009-02-12
JP2008077959A	2008-04-03

INABA, Yoshiyuki et al. (JP)
Yoshiyuki Inaba (JP)

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