SUPPLY SYSTEM FOR A FUEL CELL STACK AND METHOD FOR OPERATING THE SUPPLY SYSTEM

摘要

Although the basic principle of the fuel cell has already long been known, intensive developments always result in novel aspects of the practical realization of the fuel cell. The invention proposes a supply system (3) for a fuel cell stack (2) with a cathode gas supply line for supplying an oxidant to a cathode input (7) of the fuel cell stack (2), with an anode gas supply line for supplying a fuel to an anode input (9) of the fuel cell stack (2), with an anode gas recirculation line (12) for passing back partially used anode gas from an anode output to the anode input (9) and with a purge line (16) which can be connected for conducting away the partially used anode gas as the purge gas from the anode gas recirculation line (12) into the cathode gas supply line, wherein the supply system (3) also comprises a conditioning arrangement, which is arranged upstream of the cathode input (7) and is designed a) to mix a partial flow of the oxidant with the purge gas in a mixing station, b) to compress the partial flow, to accelerate it and/or to heat the partial flow or the mixed flow and c) to conduct the mixed flow into the cathode gas supply line.