| 摘要 |
PURPOSE:To enhance efficiency of a system by utilizing the waste heat of a fuel cell system as the standby energy of high-temperature type secondary batteries and charging the batteries with excess electric power at the rated operating condition of fuel cell. CONSTITUTION:When electric power peak out is made with high-temperature secondary batteries 16, waste heat generated in warming up of a fuel cell system and rated operation time until practical use is supplied to the outside of a secondary battery container 17 through a duct 15, and temperature of an isothermal liquid 16 within the container 17 is controlled with a thermometer 19. Temperature of the high-temperature secondary batteries 16 within the container 17 is made uniform and no inoperative batteries are generated. When the fuel cell system is not operated at night, the duct 15 is closed with dampers 20, 21 for heat insulation. As a result, although temperature slightly decreases, it is sufficiently recovered with waste heat produced by fuel cell operation until the batteries are used. Efficiency of a system is enhanced. |
