Fuel cell vehicle system
First Claim
1. A fuel cell vehicle system comprising:
- a propulsion motor capable of driving a vehicle;
a fuel cell which generates electric power by supplying a reactant gas to give an electrochemical reaction;
an energy storage device which is charged by a generated output of the fuel cell and regenerative electric power of the propulsion motor;
an output control device which controls an output current of the fuel cell; and
a control device which calculates the regenerative electric power which can be generated by a regenerative operation of the propulsion motor as well as a chargeable power which can be charged to the energy storage device, controls the output control device so that the output current of the fuel cell is restricted when the chargeable power is less than the regenerative electric power, and controls the output control device so that restriction on the output current of the fuel cell is canceled when the chargeable power is equal to or greater than the regenerative electric power.
1 Assignment
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Accused Products
Abstract
A fuel cell vehicle system includes: a propulsion motor capable of driving a vehicle; a fuel cell which generates electric power by supplying a reactant gas to give an electrochemical reaction; an energy storage device which is charged by a generated output of the fuel cell and regenerative electric power of the propulsion motor; an output control device which controls an output current of the fuel cell; and a control device which calculates the regenerative electric power which can be generated by a regenerative operation of the propulsion motor as well as a chargeable power which can be charged to the energy storage device, controls the output control device so that the output current of the fuel cell is restricted when the chargeable power is less than the regenerative electric power, and controls the output control device so that restriction on the output current of the fuel cell is canceled when the chargeable power is equal to or greater than the regenerative electric power.
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Citations
2 Claims
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1. A fuel cell vehicle system comprising:
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a propulsion motor capable of driving a vehicle; a fuel cell which generates electric power by supplying a reactant gas to give an electrochemical reaction; an energy storage device which is charged by a generated output of the fuel cell and regenerative electric power of the propulsion motor; an output control device which controls an output current of the fuel cell; and a control device which calculates the regenerative electric power which can be generated by a regenerative operation of the propulsion motor as well as a chargeable power which can be charged to the energy storage device, controls the output control device so that the output current of the fuel cell is restricted when the chargeable power is less than the regenerative electric power, and controls the output control device so that restriction on the output current of the fuel cell is canceled when the chargeable power is equal to or greater than the regenerative electric power.
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2. A fuel cell vehicle system comprising:
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a propulsion motor capable of driving a vehicle; a fuel cell which includes fuel cell units, each of which includes a fuel electrode and an oxygen electrode, and generates electric power by supplying a reactant gas to give an electrochemical reaction; an energy storage device which is charged by a generated output of the fuel cell and regenerative electric power of the propulsion motor; a reactant gas supply device which supplies the reactant gas to the fuel cell; a pressure detection device which detects a pressure of the reactant gas supplied to the fuel electrode of the fuel cell; an output control device which controls an output current of the fuel cell; and a control device which calculates the regenerative electric power which can be generated by a regenerative operation of the propulsion motor as well as a chargeable power which can be charged to the energy storage device, controls the reactant gas supply device so that supply of the reactant gas to the oxygen electrode of the fuel cell is stopped and controls the output control device so that the output current of the fuel cell is restricted when the chargeable power is less than the regenerative electric power and the pressure of the reactant gas detected by the pressure detection device is equal to or less than a predetermined value, and controls the output control device so that restriction on the output current of the fuel cell is canceled when the chargeable power is equal to or greater than the regenerative electric power or the chargeable power is less than the regenerative electric power and the pressure of the reactant gas detected by the pressure detection device is greater than the predetermined value.
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Specification