Fuel cell system and control method of fuel cell system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTomohiro Ogawa, Yoshiaki Naganuma
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Abstract
An object is to provide a technique that a current state of a fuel cell may be detected more accurately. A fuel cell system includes a controller, a fuel cell, and an impedance measurer that may measure an impedance of the fuel cell. The controller obtains a first impedance value that expresses the impedance of the fuel cell in a predetermined state, acquires a second impedance value that expresses the impedance of the fuel cell that is measured by the impedance measurer during operation control of the fuel cell, and performs operation control of the fuel cell using the first impedance value and the second impedance value.
Claims20
A fuel cell system, comprising:
- a fuel cell;
- an impedance measurer that measures an impedance of the fuel cell;
- and
- a controller configured to perform an operation control of the fuel cell, wherein the controller is further configured to obtain a first impedance value expressing the impedance of the fuel cell when the fuel cell is generating electric power in a in a predetermined reference condition where the electrolyte membrane is confirmed to be in a wet state,
- acquire a second impedance value expressing the impedance of the fuel cell by measuring the impedance measurer when the fuel cell is generating the electric power, and perform operation control of generating electric power in the fuel cell using the first impedance value and the second impedance value.
A control method of a fuel cell system, comprising:
- a first impedance acquisition process of obtaining a first impedance value that expresses an impedance of a fuel cell when the fuel cell is generating electric power in a predetermined reference condition where the electrolyte membrane is confirmed to be in a wet state;
- a second impedance acquisition process of acquiring a second impedance value expressing the impedance of the fuel cell by measuring the impedance of the fuel cell when the fuel cell is generating the electric power;
- and
- a control process of executing the operation control of generating electric power in the fuel cell by using the first impedance value and the second impedance value.
Dependencies are inferred from the claim text.