FUEL CELL SYSTEM AND FUEL SUPPLY METHOD THEREOF
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United States of America Patent
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Issued Date -
Jan 20, 2011
app pub date -
Oct 6, 2009
filing date -
Jul 20, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fuel cell system is provided. The fuel cell system includes a fuel tank, a fuel supply unit, a fuel cell stack, a liquefied recycling unit, a liquid level modulation unit, a sensing unit and a control unit. The fuel supply unit supplies a first fuel to the fuel tank. The fuel tank provides a second fuel to the fuel cell stack, and the fuel cell stack generates a first gas. The liquefied recycling unit liquefies the first gas, transforming the first gas into a recycled fluid. The liquid level modulation unit guides the recycled fluid into the fuel tank to maintain a stable fuel level of the second fuel in the fuel tank. The sensing unit senses a current signal provided by the fuel cell stack. The control unit calculates a current quantity according to the current signal to supply the first fuel to the fuel tank.
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