Fuel cell system and operating method for fuel cell system
AssigneesKYOCERA Corporation, Toyota Jidosha Kabushiki Kaisha
InventorsTakatoshi Masui, Takashi Shigehisa
Life of this patent
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Abstract
A fuel cell system includes: a fuel cell that generates power using an oxidant gas and a fuel gas; estimating means for estimating an electric resistance of the fuel cell in accordance with a voltage and a current of the fuel cell; and temperature controlling means for performing control to raise a temperature of the fuel cell when the electric resistance estimated by the estimating means exceeds a target electric resistance range and reduce the temperature of the fuel cell when the estimated electric resistance falls below the target electric resistance range.
Claims24
A fuel cell system comprising:
- a fuel cell that generates power using an oxidant gas and a fuel gas;
- an estimating portion that estimates an electric resistance of the fuel cell in accordance with a voltage and a current output by the fuel cell;
- and
- a temperature controlling portion that performs temperature control to raise a temperature of the fuel cell when the electric resistance estimated by the estimating portion exceeds a target electric resistance range and reduce the temperature of the fuel cell when the estimated electric resistance falls below the target electric resistance range.
An operating method for a fuel cell system, comprising:
- estimating an electric resistance of a fuel cell in accordance with a voltage and a current output by the fuel cell;
- and
- performing temperature control to raise a temperature of the fuel cell when the estimated electric resistance exceeds a target electric resistance range and reduce the temperature of the fuel cell when the estimated electric resistance falls below the target electric resistance range.
Dependencies are inferred from the claim text.