Fuel cell device operating method for motor vehicle, involves adjusting pressure in cathode area based on signal of flow sensor and independent of signal of cathode pressure sensor and/or differential pressure sensor during cold-start phase

摘要

The method involves separating anode and cathode areas (2, 3) from each other by a membrane (4). A fuel cell device (1) is provided with an anode pressure sensor (5) for measuring pressure in the anode area, a cathode pressure sensor (6) for measuring pressure in the cathode area and/or a differential pressure sensor (7) for measuring difference pressure between the areas. The pressure in the cathode area is adjusted based on a signal of a flow sensor (10) and independent of a signal of the cathode pressure sensor and/or the differential pressure sensor, during a cold-start phase.