| 摘要 |
PURPOSE:To solve the problems that a diode for a reverse current prevention is hard to have a large capacity and has large loss in order to make a diode have a large capacity and provide a highly efficient diode since the diode has these problems, wherein the diode is in a conventional fuel cell power generating apparatus in which a plurality of fuel cells are connected in parallel. CONSTITUTION:Diodes 2A, 2B are connected respectively in series with a plurality of fuel cells 1A, 1B which are connected in parallel and further switches 3A, 3B are connected respectively with the diodes 2A, 2B in parallel to compose a fuel cell power generating apparatus. A switch which opens when the output voltage of the fuel cell power generating apparatus is higher than a set voltage and closes when the output voltage is under the set voltage is used for the switches 3A, 3B, wherein the set voltage is equal to or lower than the lowest no-load open voltage of each fuel cell, or a switch which opens when the output current is lower than the set current and closes when the output current is over the set current is used for the switches 3A, 3B, wherein the set current corresponds to the lowest no-load open voltage of each fuel cell. |
