Abstract:
A device (13) for discharging liquid water from a water separator (12) in a fuel cell system (1), having a valve device (15), a liquid sensor (16) and a control unit (17) which controls the valve device (15) depending on measured values of the liquid sensor (16). The liquid sensor (16) is arranged downstream of the valve device (15) in the flow direction.
Abstract:
A cooling device for a fuel cell system includes at least one cooling circuit, through which a fuel cell can be cooled. The fuel cell system also includes a component with at least an electric drive area and a gas delivery area. A gas can be delivered to the fuel cell through the gas delivery area and the component is actively cooled. The cooling of the component takes place together with the cooling of the fuel cell in a cooling circuit.
Abstract:
A fuel cell system includes at least one fuel cell and a humidifying device for humidifying a supply air flow flowing to a cathode chamber of the fuel cell by an exhaust air flow discharged from the cathode chamber of the fuel cell. The supply air flow and the exhaust air flow are separated from one another by water vapor-permeable membranes. An anode water separator, through which exhaust gas from an anode chamber of the fuel cell flows, is integrated into the humidifying device.
Abstract:
A recirculation device for a fuel cell system includes a recirculation line connecting the outlet and inlet of the anode region of the fuel cell. The recirculation device includes a liquid separator situated in the area of the recirculation line and a discharge line having a discharge valve for liquid and/or gases. A bubble sensor for controlling the discharge valve is situated in the area of the discharge line. A method for discharging liquid and/or gases from a recirculation device opens and closes the discharge valve as a function of an event detected by the bubble sensor.
Abstract:
A method serves for operating a fuel cell system with at least a fuel cell and a feed air side air conveyor and an outgoing air side turbine. The fuel cell system is flushed at least during a switching-off procedure with air from the air conveyor. During flushing a connection is created between the air conveyor and the outgoing air side between the fuel cell and turbine.
Abstract:
In the operation of a fuel cell of a fuel cell system, water contained in the exhaust gas is stored in a water tank. The water tank has means for discharging the water in increments or portions. For example, the water can exit as droplets through the porous floor surface of the water tank, and be carried off by the driving wind while the vehicle is driving; or it can be collected at a wall of a water tank and fed into lines, returning it to the exhaust gas flow as droplets.
Abstract:
A device (13) for discharging liquid water from a water separator (12) in a fuel cell system (1), having a valve device (15), a liquid sensor (16) and a control unit (17) which controls the valve device (15) depending on measured values of the liquid sensor (16). The liquid sensor (16) is arranged downstream of the valve device (15) in the flow direction.
Abstract:
A fuel cell system includes at least one fuel cell and a humidifying device for humidifying a supply air flow flowing to a cathode chamber of the fuel cell by an exhaust air flow discharged from the cathode chamber of the fuel cell. The supply air flow and the exhaust air flow are separated from one another by water vapor-permeable membranes. An anode water separator, through which exhaust gas from an anode chamber of the fuel cell flows, is integrated into the humidifying device.