DEVICE FOR THE OPERATION OF A FUEL CELL SYSTEM

摘要

The invention relates to a device for the operation of a fuel cell system, comprising a fuel cell stack (11) for the generation of electric energy, wherein the fuel cell stack (11) comprises a cathode inlet line (23) for the supply of a gaseous oxidant (24), and a cathode outlet line (31) for the discharge of a cathode exhaust gas, and wherein a moisture sensor (40, 41) is disposed both in the cathode inlet line (23) and in the cathode outlet line (31). The invention further proposes a humidifier (30) for the regulation of the water vapor concentration of the supplied gaseous oxidant (24), wherein a bypass line (32a) is available for the controlled bypass of the humidifier (30) for the gaseous oxidant (24) to be moistened, and a bypass line (32b) for the controlled bypass of the humidifier (30) for the cathode exhaust gas as a function of the sensor signals of the moisture sensors (40, 41).