Daimler Ag

Uwe Pasera

Ottmar Schmid

Sven Schmalzriedt

Bernhard Vogel

Simon Steinhuebl

Harald Teves

Hans-Joerg Pflugfelder

Karl Schaufler

Maximilian Buehler

Simon Steinhubl

Holger Baur

Maximilian BÜHLER

Simon Steinhübl

A cooling arrangement for cooling a fuel cell in a fuel cell system is disclosed. The cooling arrangement has at least two fluidically connected cooling circuits in which a liquid coolant medium flows, The first cooling circuit includes a first coolant pump, a fuel cell heat exchanger, a heating unit, and a charge air cooler, which is in heat-exchanging contact with compressed supply air flowing to the fuel cell. The second cooling circuit includes a cooling heat exchanger for cooling the liquid coolant medium. The cooling arrangement includes at least one further coolant pump.

Cooling arrangement for cooling a fuel cell

A fuel cell system includes a fuel cell with an anode chamber and a cathode chamber. The fuel cell system also includes a recirculation device that recirculates anode exhaust gas to the anode input, which includes a discharge line for discharging liquid and/or gas from the region of the recirculation device, and an air conveying device for supplying the cathode chamber with a supply air flow. A water separator, which is connected to the discharge line and through which at least a portion of the supply air flow passes, is situated between the air conveying device and the cathode chamber in the area of the supply air flow.

Fuel cell system comprising a water separator

In a fuel cell stack, fuel, such as often hydrogen, electrochemically reacts with an oxidant, such as ambient air, and electric energy is generated from chemical energy. During the reaction, a proton exchange membrane (PEM) separates the fuel from the oxidant during the electrochemical process. A supply system for the fuel cell stack comprises an adjustable humidifying device for humidifying a supply gas which is supplied to the fuel cell stack, as a function of a control signal; and a dehumidifying device, which is configured to dehumidify an exhaust gas that is formed from the supply gas conducted through the fuel cell stack, and to discharge the same as a dehumidified exhaust gas. A controller, which generates the control signal, is configured from a programming and/or switching point of view to generate the control signal based on the gas temperature of the dehumidified exhaust gas.

Supply system and warning device for a fuel cell stack and method for controlling the supply system

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Esslingen, Germany

Uwe Pasera