Fuel cell system i.e. proton exchange membrane fuel cell system, for vehicle, has bypass valve arranged in exhaust pipe after fuel cell for bypassing components, where valve acts immediately up on or integrated in cathode chamber

摘要

The system (1) has an exhaust pipe (21) from a cathode chamber (4) of a fuel cell (3), where exhaust air is flown off to environment over components. A bypass valve (13) is arranged in the exhaust pipe after the fuel cell for bypassing one of the components. The bypass valve acts immediately up on or integrated in the cathode chamber and arranged underneath or below the cathode chamber during use in direction of gravitational force. The bypass valve connects the cathode chamber with the environment. The components are a humidifier (11), a water separator (14), a turbine (17), a muffler (19) and a burner. An independent claim is also included for a method for operating a fuel cell system.