DEVICE AND METHOD FOR PROVIDING A FUEL CELL WITH AN OXIDIZING AGENT

摘要

The invention relates to a device for providing a fuel cell (2) with an oxidizing agent. The device is equipped with a supply line (7) which leads to the cathode chamber (3) of the fuel cell (2) and in which a compressor (8) is disposed, and with a discharge line (13) which leads from the cathode chamber (3) and in which an expander (11) is disposed, and with a bypass line (14) which extends between an output (81) of the compressor (8) and an input of the expander (11) and which surrounds the fuel cell (2) and in which a first flow resistance element (15) is disposed, wherein a recirculation device (17) for returning the oxidizing agent branches away from the supply line (7) after the compressor (8) in the direction of flow of the oxidizing agent, and opens again into the supply line (7) in front of the compressor (8). The invention also relates to a method for providing a fuel cell with an oxidizing agent.