IDLE STOP-START CONTROL METHOD OF FUEL CELL HYBRID VEHICLE
First Claim
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1. An idle stop-start control method of a fuel cell hybrid vehicle including a fuel cell as a main power source and a storage means as an auxiliary power source, the method comprising:
- determining whether to perform a fuel cell stop mode by determining conditions for stopping power generation of the fuel cell;
performing the fuel cell stop mode, in which the current output from a fuel cell stack is cut off by stopping the supply of reactant gases to the fuel cell, if the fuel cell stop mode is determined; and
performing a fuel cell restart mode by restarting the supply of air and hydrogen, if conditions for restarting the fuel cell are satisfied in the fuel cell stop mode.
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Abstract
The present invention provides an idle stop-start control method of a fuel cell hybrid vehicle including a fuel cell as a main power source and a storage means as an auxiliary power source, in which air and hydrogen supply is cut off during low power operation where the efficiency of the fuel cell is low and during regenerative braking such that residual oxygen and hydrogen are consumed to drop the voltage of a fuel cell stack, thus stopping the operation of the fuel cell.
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12 Claims
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1. An idle stop-start control method of a fuel cell hybrid vehicle including a fuel cell as a main power source and a storage means as an auxiliary power source, the method comprising:
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determining whether to perform a fuel cell stop mode by determining conditions for stopping power generation of the fuel cell; performing the fuel cell stop mode, in which the current output from a fuel cell stack is cut off by stopping the supply of reactant gases to the fuel cell, if the fuel cell stop mode is determined; and performing a fuel cell restart mode by restarting the supply of air and hydrogen, if conditions for restarting the fuel cell are satisfied in the fuel cell stop mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An idle stop-start control method of a fuel cell hybrid vehicle including a fuel cell as a main power source and a storage means as an auxiliary power source, the method comprising:
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determining whether to perform a fuel cell stop mode; performing the fuel cell stop mode, if the fuel cell stop mode is determined; and performing a fuel cell restart mode, if conditions for restarting the fuel cell are satisfied in the fuel cell stop mode. - View Dependent Claims (10, 11, 12)
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Specification