Fuel Cell Supply System, Fuel Cell System and Method of Operating the Same
A fuel cell supply system 6 is proposed for feeding an oxidizing agent to a fuel cell assembly 2 , has a continuous flow machine for accelerating and/or increasing the pressure of the oxidizing agent, and a humidifier for humidifying the oxidizing agent. The humidifier is connected or connectable flow-wise between the continuous flow machine and the fuel cell assembly, and has a dehumidifier, which is designed and/or arranged to dehumidify the oxidizing agent.
1 - 14 . (canceled)
15 . A fuel cell supply system ( 6 ) for feeding an oxidizing agent to a fuel cell assembly having a continuous flow machine for accelerating and/or increasing the pressure of the oxidizing agent and having a humidifier for humidifying the oxidizing agent, the humidifier being connected or connectable flow-wise between the continuous flow machine and the fuel cell assembly, a dehumidifier, which is designed or arranged for dehumidification of the oxidizing agent.
16 . The fuel cell supply system as claimed in claim 15 , wherein the dehumidifier is arranged flow-wise downstream of the humidifier.
17 . The fuel cell supply system as claimed in claim 16 , wherein the dehumidifier is of connectable construction.
18 . The fuel cell supply system as claimed in claim 17 , wherein the dehumidifier may be connected by division of the oxidizing agent into sub-streams.
19 . The fuel cell supply system as claimed in claim 15 , wherein the dehumidifier is one of integrated into the humidifier and coupled directly to the humidifier.
20 . The fuel cell supply system as claimed in claim 15 , further comprising a cooling device, which is arranged flow-wise after the continuous flow machine and before the dehumidifier.
21 . The fuel cell supply system as claimed in claim 20 , wherein the cooling device is arranged flow-wise after the humidifier.
22 . The fuel cell supply system as claimed in claim 15 , wherein the dehumidifier is a humidity buffer.
23 . The fuel cell supply system as claimed in claim 1 , wherein the dehumidifier takes the form of a humidity diverter.
24 . The fuel cell supply system as claimed in claim 15 , wherein the dehumidifier takes the form of a passive device or a device operated by external energy.
25 . The fuel cell supply system as claimed in claim 15 , wherein the dehumidifier comprises one of a membrane dryer, an enthalpy wheel, a chemical reactor, an absorber and an adsorber.
26 . The fuel cell supply system as claimed in claim 15 , further comprising a control device to activate the dehumidifier and/or the cooling device in the event of system switch-off or of a cold start of the fuel cell device.
27 . A fuel cell device for a vehicle, having a fuel cell supply system as claimed in claim 15 .
28 . A method of switching off and/or cold starting the fuel cell device as claimed in claim 27 , wherein water-extracting measures are applied to the oxidizing agent.