| 摘要 |
PURPOSE:To improve the starting characteristic of a fuel cell during the time of low temperatures by feeding a current from a battery to a heater to heat the liquid electrolyte of the fuel cell when the temperature of the electrolyte is below a given level. CONSTITUTION:When the temperature of the electrolyte of a fuel cell detected by a liquid temperature sensor 9 is below a given level, a switch 14 is connected to contacts (a) and (a') through a switching circuit 13 controlled by signals from a controller 12 to heat a heater 11 by feeding a current from a battery 15 to the heater 11. When the temperature of a liquid electrolyte 10 reaches a given level, the switch 14 is switched to contacts (b) and (b') through the switching circuit 13 controlled by switching signals from the controller 12 to supply the electromotive force of the fuel cell to a battery 15 used as a load thereby charging the battery 15. Thus, when the temperature of the electrolyte is low, it is heated by feeding a current from the battery 15 to the heater 11 installed in the container. Accordingly, it is possible to prevent any decrease in the electromotive force of the fuel cell and to improve its starting characteristic. |
