ANODE SUPPLY SYSTEM FOR A FUEL CELL STACK AND METHOD FOR PURIFYING THE ANODE SUPPLY SYSTEM

摘要

Fuel cell technology is a forward-looking alternative for driving motors in the automotive sector since this technology, in contrast to the internal combustion engines in widespread use, does not require any fossil fuels and is also more environmentally friendly. Yet, although the fuel technology as such has already long been known, conversion problems restrict the use of this technology in vehicles for everyday road traffic. A problem field which has long been known is in this case the control of the gas quality in the anode region of the fuel cell. The invention relates to an anode supply system (5) for a fuel cell stack (2), wherein the fuel cell stack (2) has an anode region (4) with a gas inlet (7) and a gas outlet (6), having a sensor device (11) for determining the fuel component within the anode supply system (5), having an ejector valve (8), which is designed and/or arranged so as to produce a gas-conducting connection between the anode supply system (5) and the environment, and having a control apparatus (12), which is designed in terms of programming and/or circuitry to drive the ejector valve (8), wherein the control apparatus (12) is designed to control the ejector valve (8) on the basis of the signals from the sensor device (11) independently of the present electrical power data of the fuel cell stack (2).