Fuel cell device

摘要

A fuel cell includes a fuel cell, auxiliaries, a storage battery, an auxiliary power switching unit and a controlling device. The fuel cell is connected to a system power supply. The auxiliaries are coupled to the fuel cell. The auxiliary power switching unit switches power supplies to at least one of the auxiliaries from the storage battery. When the fuel cell device that is not operating starts operation at a time of power failure of the system power supply, the controlling device determines whether or not each of the auxiliaries need power for startup of the fuel cell and prompts the auxiliary power switching unit to supply the power from the storage battery to one or more auxiliaries for which the controlling device has determined a power demand for the startup.

主权项

1. A fuel cell device comprising:
a fuel cell that is connected to a system power supply and that generates power with a fuel gas and an oxygen containing gas; a plurality of auxiliaries coupled to the fuel cell; a storage battery; an auxiliary power switching unit that selectively supplies power to at least one of the plurality of auxiliaries from the storage battery; a power supply source switching unit that switches between the system power supply or the storage battery and the fuel cell as a power supply source to the auxiliaries; and a controlling device configured to: start operation of the fuel cell from a non-operating state; determine which of the plurality of auxiliaries needs power for startup of the fuel cell; prompt the auxiliary power switching unit to supply the power from the storage battery to the determined auxiliaries when the controlling device has determined a lack of adequate power from the system power supply; and control the power supply source switching unit in such a way that a power generation start temperature at the fuel cell during the startup of the fuel cell device using the storage battery is set lower than a power generation start temperature at the fuel cell during the startup of the fuel cell device using the system power supply.