| 摘要 |
PURPOSE:To make it possible to lengthen the life and to increase the performance of a fuel cell by installing a device and a method by which oxidizing agent supply shortage is temporarily brought during the operation of a fuel cell. CONSTITUTION:Cell output controllers 6 are installed in cell stacks 11, 12,...1N. Flow controllers such as flow regulating valves 7 are installed in oxidizing agent supply lines 5. A controller 8 is arranged between the cell output controllers, the flow regulating valves 7 and a load current detector 3. A specific cell stack 11 of a series stack 1 is temporarily brought in an oxidizing agent shortage state during the operation of the series stack 1 without a decrease in load current of the series stack 1. By this process, the deterioration in cell performance with the passage of time is retarded and cell perforamnce is increased. |
