Patent ID: 11888194
Assignee: AUDI AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 2:
3. The method according to claim 2, further comprising, after performing humidification, to verify whether the humidification has eliminated a current loss:
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.