Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Process or means for producing – recycling – or treating...
Reexamination Certificate
2011-01-04
2011-01-04
Yuan, Dah-Wei (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Process or means for producing, recycling, or treating...
C429S400000, C429S450000, C429S414000
Reexamination Certificate
active
07862935
ABSTRACT:
A strategy of controlling a state of hydration of a fuel cell(s) and actively managing operation of the fuel cell(s) to achieve a desired state of hydration. The control strategy monitors the state of hydration and a rate of change of the state of hydration which are used to control the operation of the fuel cell(s). A supervisory control strategy is implemented that alters the operating parameters of the fuel cell(s) based upon the state of hydration, the rate of change of the state of hydration, and a desired operational range for the state of hydration.
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U.S. Appl. No. 11/130,804, filed May 17, 2005, Fagley et al., “Relative Humidity, Profile Control Strategy for High Current Density Stack Operation”.
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Fagley John C.
Goebel Steven G.
Sinha Manish
Willimowski Peter
GM Global Technology Operations Inc.
Martin Angela
Yuan Dah-Wei
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