ELECTRICAL POWER SUPPLY BY MEANS OF FUEL CELLS

摘要

The subject matter of the invention is an electrical power supply having at least two fuel cells or groups of fuel cells which are hard-wired to one another, and at least two electrical power supply contacts, with each fuel cell having a first electrode and a second electrode, one of which is in the form of a cathode while the other is in the form of an anode, a layer through which at least protons can pass with a catalytic effect, or additionally a catalytic material in the area between the first electrode and the second electrode, a fuel provision device for supplying a fuel (H2), a reactant provision device for supplying a reactant (02) which reacts with protons from the fuel (H2) to produce electricity, and the fuel provision device as well as the reactant provision device are arranged on the first electrode side or the second electrode side, with at least two of the fuel cells or groups of fuel cells which are hard-wired to one another being coupled to one another by means of a switching device such that these fuel cells are selectively connected to the electrical power supply contacts in parallel, in series individually or not at all.