Method for operating a fuel cell battery
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United States of America Patent
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Mar 29, 2005
Grant Date -
Mar 28, 2002
app pub date -
Sep 21, 2001
filing date -
Sep 25, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The method for operating a fuel cell battery (1) comprises an analysis of an integrity state of the battery. This integrity state is determined by means of measurement of operating parameters and a programmed evaluation of the measurement data. The battery is controlled for the purpose of reliable operation in such a manner that the maximum electrical output power is subjected to a limitation which is dependent on the integrity state or an interruption of the operation is initiated. The integrity state can be characterized by at least two parameters, in particular a parameter pair C.sub.j, d.sub.j. From a relationship which contains the parameters an internal electrical resistance (R.sub.i) of the battery can be calculated on the one hand and a statement on the quality of the battery can be derived on the other hand.
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