CPC H01M 8/04992 (2013.01) [H01M 8/04559 (2013.01); H01M 2250/20 (2013.01)] | 10 Claims |
1. A method for distinguishing a cause of voltage losses in a fuel cell device, comprising:
detecting a quasi-stationary operation of the fuel cell device;
acquiring and storing a measured current-voltage characteristic curve with current values and voltage values of a fuel cell stack of the fuel cell device;
using a PtOx model to determine PtOx voltage losses and calculating a corrected current-voltage characteristic curve for the PtOx-free and normally humidified fuel cell stack; and
comparing the measured and corrected current-voltage characteristic curves and detecting an at least partially dried-out fuel cell stack if the measured current-voltage characteristic curve runs below the corrected current-voltage characteristic curve.
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