Method of starting fuel cell system
AssigneeHonda Motor Co., Ltd.
InventorsKoichiro FURUSAWA, Kaoru YAMAZAKI
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Abstract
Provided is a method of starting a fuel cell system including a hydrogen concentration acquisition process of acquiring a concentration of hydrogen in the anode, a threshold value determination process of determining whether or not the concentration of hydrogen which is acquired by the hydrogen concentration acquisition process is greater than or equal to a predetermined second threshold value, and a starting pressure setting process of setting a pressure of hydrogen supplied to an anode from a hydrogen tank when supplying hydrogen to the anode from the hydrogen tank in a state in which a contactor is shut off.
Claims9
A method of starting a fuel cell system comprising:
- a fuel cell that generates electricity by a fuel of an anode and an oxidant of a cathode;
- a fuel gas supply unit that supplies a fuel gas containing the fuel to the anode;
- an oxidant gas supply unit that supplies an oxidant gas containing the oxidant to the cathode;
- a connection and disconnection unit capable of completely switching connection and disconnection between the fuel cell and an electric load;
- and
- a control unit that controls the fuel gas supply unit and the oxidant gas supply unit, the method comprising:
- a hydrogen concentration acquisition process of acquiring a concentration of hydrogen as the fuel in the anode;
- a threshold value determination process of determining whether or not the concentration of the hydrogen which is acquired by the hydrogen concentration acquisition process is greater than or equal to a first threshold value;
- and
- a starting pressure setting process of setting a pressure of the hydrogen that is supplied from the fuel gas supply unit during execution of starting of the fuel cell for supplying the hydrogen to the anode from the fuel gas supply unit in a state in which the connection and disconnection unit is shut off based on a determination result determined by the threshold value determination process, wherein
- in the starting pressure setting process, in a case where it is determined in the threshold value determination process that the concentration of the hydrogen is greater than or equal to the first threshold value, the hydrogen pressure is set to be less than or equal to a pressure of the hydrogen during execution of normal power generation that is executed after the starting of the fuel cell is completed, and
- in a case where it is determined in the threshold value determination process that the concentration of the hydrogen is less than the first threshold value, the hydrogen pressure is set to be higher than the pressure of the hydrogen during execution of the normal power generation.
Dependencies are inferred from the claim text.