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US 2019/0157695 A1Published application
Fuel cell system and method of controlling fuel cell system
AssigneeHonda Motor Co., Ltd.
InventorsYuji Okamura, Tetsuya Fukuda
Life of this patent
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Abstract
In a fuel cell system and a method of controlling the fuel cell system, correlation temperature correlated to temperature of a fuel cell stack is obtained. Further, temperature of a heating unit provided at the bottom of a water storage area of a gas liquid separator is estimated. The presence/absence of water in the gas liquid separator is determined based on the correlation temperature of the fuel cell stack and the temperature of the heating unit.
Claims7
A fuel cell system comprising:
- a fuel cell stack;
- a fuel gas supply unit configured to supply a fuel gas to the fuel cell stack;
- an oxygen-containing gas supply unit configured to supply an oxygen-containing gas to the fuel cell stack;
- a gas liquid separator provided at least in one of the fuel gas supply unit and the oxygen-containing gas supply unit;
- a fuel cell stack correlation temperature acquisition unit configured to obtain correlation temperature correlated to temperature of the fuel cell stack;
- a heating unit provided at a bottom of a water storage area of the gas liquid separator;
- a heating unit temperature estimation unit configured to estimate temperature of the heating unit;
- and
- a control unit configured to determine presence/absence of water in the gas liquid separator based on the correlation temperature of the fuel cell stack and the temperature of the heating unit.
6 more elements
A method of controlling a fuel cell system, the fuel cell system comprising:
- a fuel cell stack;
- a fuel gas supply unit configured to supply a fuel gas to the fuel cell stack;
- an oxygen-containing gas supply unit configured to supply an oxygen-containing gas to the fuel cell stack;
- a gas liquid separator provided at least in one of the fuel gas supply unit and the oxygen-containing gas supply unit;
- a fuel cell stack correlation temperature acquisition unit configured to obtain correlation temperature correlated to temperature of the fuel cell stack;
- a heating unit provided at a bottom of a water storage area of the gas liquid separator;
- and
- a heating unit temperature estimation unit configured to estimate temperature of the heating unit,
- the method comprising the step of determining presence/absence of water in the gas liquid separator based on the correlation temperature of the fuel cell stack and the temperature of the heating unit by a control unit.
6 more elements
Dependencies are inferred from the claim text.