Method for starting a fuel cell device under frost start conditions, fuel cell device and motor vehicle with a fuel cell device

摘要

The invention relates to a method for starting (12) a fuel cell device comprising a plurality of fuel cells under frost start conditions, comprising the steps of supplying a hydrogen-containing reactant on the anode side and supplying an oxygen-containing reactant on the cathode side, detecting (1) a single cell voltage of each of the fuel cells and evaluating (2) the Single cell voltage with regard to the presence of a cell reversal, and in the event of a cell reversal, evaluation of a size of the cell reversal and determination of whether there is an anode block (3) or a cathode block (4), a) in the case of a cathode block (4) increase (5) a performance of the fuel cell device, andb) in the event of an anode block (3) reduction (7) of the performance of the fuel cell device for a duration of a tolerance to polarity reversal of fuel cells, with b1) transition to normal operation (8) when the anode block is removed de (3) lies within the duration of the tolerance towards the polarity reversal (9), andb2) termination (11) of the starting process if the removal of the anode block cannot take place within the duration of the tolerance towards the polarity reversal (10) a fuel cell device and a motor vehicle with a fuel cell device.