FUEL CELL SYSTEM

摘要

The invention relates to a fuel cell system (1) comprising at least one low-temperature fuel cell (2) having a feed line (5) for an O₂-containing gas, preferably air, on the cathode side, a discharge line (6) for the exhaust cathode gas, a feed line (7) for a H₂-containing fuel gas on the anode side, a discharge line (8) for the exhaust anode gas, and a recirculation device (3), on the cathode side, for partially recirculating the exhaust cathode gas to the cathode circuit of the fuel cell (2). In order to improve operation and recirculation possibilities, the recirculation device (3) on the cathode side has a separator (9) for separating the exhaust cathode gas into a liquid water-free gas phase and liquid water, at least one separately adjustable respective recirculation line (10, 11) being provided for every component. A liquid water separator (30, 31) which can be activated and deactivated depending on the operating parameters of the fuel cell system may be arranged in a recirculation line (11, 14) on the cathode side and on the anode side.