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
2006-06-30
2011-10-11
Michener, Jennifer (Department: 1728)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for control of operation
C429S433000
Reexamination Certificate
active
08034498
ABSTRACT:
A fuel cell system according to the present invention is characterized by comprising a fuel cell, measurement means for measuring impedances of the fuel cell in two kinds or more of frequency regions, and first judgment means for judging two or more parameters concerned with an internal state of the fuel cell based on measurement results of the impedances in the respective frequency regions. According to such a constitution, the impedances in the two or more types of frequency regions (a high frequency region, a low frequency region and the like) are measured to judge two or more parameters such as a wet state of an electrolytic film of the fuel cell and a supply state of a fuel gas, which are concerned with the internal state of the fuel cell based on this measurement result. Since such judgment is performed, as compared with the conventional technology, the internal state of the fuel cell can accurately be grasped, and highly efficient and highly robust control of the fuel cell system can be performed.
REFERENCES:
patent: 2004/0151956 (2004-08-01), Orihashi et al.
patent: 2004/0229098 (2004-11-01), Fujita
patent: 2005/0048336 (2005-03-01), Takebe et al.
patent: 2006/0147765 (2006-07-01), Barrett
patent: 1 501 146 (2005-01-01), None
patent: 2002-367650 (2002-12-01), None
patent: 2003-86220 (2003-03-01), None
patent: 2004-509446 (2004-03-01), None
patent: 2004-119139 (2004-04-01), None
patent: 2004-241236 (2004-08-01), None
patent: 2005-108674 (2005-04-01), None
patent: 2005-285614 (2005-10-01), None
patent: WO 03/098769 (2003-11-01), None
Hamada Shigetaka
Kizaki Mikio
Manabe Kota
Orihashi Nobuyuki
Shige Masahiro
Kenyon & Kenyon LLP
Michener Jennifer
Toyota Jidosha & Kabushiki Kaisha
Wills Monique
LandOfFree
Fuel cell system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fuel cell system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel cell system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4254449