The present invention provides a fuel cell system including a fuel cell configured to cause reactant gas to be electrochemically reacted to generate electrical power when the reactant gas is supplied to the fuel cell, power consuming equipment such as a reactant gas supply apparatus and a heating de
The present invention provides a fuel cell system including a fuel cell configured to cause reactant gas to be electrochemically reacted to generate electrical power when the reactant gas is supplied to the fuel cell, power consuming equipment such as a reactant gas supply apparatus and a heating device operable to consume electrical power generated by the fuel cell, and a controller for controlling operation of the fuel cell system. During a warm-up operation, the controller causes the reactant gas supply apparatus to start a flow of the reactant gas and to increase the flow of the reactant gas over time, such that the reactant gas supply device starts to consume power and consumes increased power over time. After starting the flow of the reactant gas, the controller causes the heating device to start heating the coolant such that the heating device consumes power.
대표청구항▼
1. A fuel cell system comprising: a fuel cell configured to cause reactant gas to be electrochemically reacted to generate electrical power when the reactant gas is supplied to the fuel cell;power consuming equipment operable to consume electrical power generated by the fuel cell, the power consumin
1. A fuel cell system comprising: a fuel cell configured to cause reactant gas to be electrochemically reacted to generate electrical power when the reactant gas is supplied to the fuel cell;power consuming equipment operable to consume electrical power generated by the fuel cell, the power consuming equipment including a reactant gas supply apparatus configured to supply the reactant gas to the fuel cell and a heating device configured to heat coolant supplied to the fuel cell; anda controller for controlling operation of the fuel cell;wherein during a warm-up operation, the controller causes the reactant gas supply apparatus to start a flow of the reactant gas and to increase the flow of the reactant gas over time, such that the reactant gas supply apparatus starts to consume power and consumes increased power over time; andwherein after the reactant gas supply apparatus starts to consume a predetermined power increased by the increased flow of the reactant gas, the controller causes the heating device to start heating the coolant supplied to the fuel cell such that the heating device consumes power. 2. The fuel cell system according to claim 1, wherein the controller sets a target generating power of the fuel cell and increases the target generating power in accordance with the power consumed by the power consuming equipment. 3. The fuel cell system according to claim 2, wherein when the controller determines that the power generated by the fuel cell is unable to achieve the target generating power, the controller decreases the target generating power such that the controller causes the heater to stop heating the coolant and then causes the reactant gas supply apparatus to stop increasing the flow of the reactant gas over time. 4. The fuel cell system according to claim 1, wherein after the controller causes the heating device to start heating the coolant supplied to the fuel cell, the controller causes the reactant gas supply apparatus to increase the pressure of the reactant gas over time such that the power consumed by the reactant gas supply apparatus increases over time. 5. The fuel cell system according to claim 4, wherein the controller sets a target generating power of the fuel cell and increases the target generating power in accordance with power to be consumed by the power consuming equipment, andwherein when the controller determines that the power generated by the fuel cell is unable to achieve the target generating power, the controller causes the reactant gas supply apparatus to stop increasing the pressure of the reactant gas over time, and then the controller causes the reactant gas supply apparatus to stop increasing the flow of the reactant gas over time. 6. The fuel cell system according to claim 4, wherein the controller sets a target generating power of the fuel cell and increases the target generating power in accordance with power consumed by the power consuming equipment, andwherein when the controller determines that the power generated by the fuel cell is unable to achieve the target generating power, the controller decreases the target generating power such that the controller first causes the reactant gas supply apparatus to decrease the pressure of the reactant gas over time, then causes the heater to stop heating the coolant, and then causes the reactant gas supply apparatus to decrease the flow of the reactant gas over time. 7. The fuel cell system according to claim 4, wherein the power consuming equipment further includes a power storage device adapted to be charged by power generated by the fuel cell;wherein the controller starts charging the power storage device after the heating device starts heating the coolant; andwherein the controller then causes the reactant gas supply apparatus to increase the pressure of the reactant gas over time. 8. The fuel cell system according to claim 2, wherein the controller increases the target generating power of the fuel cell from a lower generating power limit to an upper generating power limit;wherein the lower generating power limit is set to a minimum value required for power generation by the fuel cell; andwherein the upper generating power limit is set to a maximum value for power generation performance of the fuel cell system. 9. The fuel cell system according to claim 2, wherein the controller increases the target generating power of the fuel cell from a lower generating power limit to an upper generating power limit;wherein the lower generating power limit is set to a minimum value required for power generation by the fuel cell; andwherein the upper generating power limit is set to the sum of the lower target generating power limit and a maximum consuming power of the power consuming equipment. 10. A method for controlling a fuel cell system during a warm-up operation, the fuel cell system comprising a fuel cell configured to cause reactant gas to be electrochemically reacted to generate electrical power when the reactant gas is supplied to the fuel cell and power consuming equipment operable to consume electrical power generated by the fuel cell, the power consuming equipment including a reactant gas supply apparatus configured to supply the reactant gas to the fuel cell and a heating device configured to heat coolant supplied to the fuel cell, the method comprising: starting a flow of the reactant gas such that the reactant gas supply apparatus consumes power;increasing the flow of the reactant gas over time such that the power consumed by the reactant gas supply apparatus increases over time; andafter the reactant gas supply apparatus starts to consume a predetermined power increased by the increased flow of the reactant gas, heating the coolant supplied to the fuel cell such that the heating device consumes power. 11. The method according to claim 10, further comprising: setting a target generating power of the fuel cell; andincreasing the target generating power in accordance with the power consumed by the power consuming equipment. 12. The method according to claim 11, further comprising: determining whether or not the power generated by the fuel cell is able to achieve the target generating power;when the power generated by the fuel cell is determined to be unable to achieve the target generating power, decreasing the target generating power; andwhen the target generating power is decreased, stopping heating the coolant and then stopping increasing the flow of reactant gas over time. 13. The method according to claim 10, further comprising: after starting heating of the coolant supplied to the fuel cell, increasing the pressure of the reactant gas over time thereby increasing the power consumed by the reactant gas supply apparatus over time. 14. The method according to claim 13, further comprising: setting a target generating power of the fuel cell;increasing the target generating power in accordance with power consumed by the power consuming equipment;determining whether or not the power generated by the fuel cell is able to achieve the target generating power; andwhen the power generated by the fuel cell is determined to be unable to achieve the target generating power, stopping increasing the pressure of the reactant gas over time, and then stopping increasing the flow of the reactant gas over time. 15. The method according to claim 13, further comprising: setting a target generating power of the fuel cell;increasing the target generating power in accordance with power consumed by the power consuming equipment;determining whether or not the power generated by the fuel cell is able to achieve the target generating power;when the power generated by the fuel cell is determined to be unable to achieve the target generating power, decreasing the target generating power; andwhen the target generating power is decreased, first decreasing the pressure of the reactant gas over time, then stopping the heater from heating the coolant, and then decreasing the flow of reactant gas over time. 16. The method according to claim 13, wherein the power consuming equipment further includes a power storage device adapted to be charged by power generated by the fuel cell, the method further comprising: starting to charge the power storage device after the heating device starts heating the coolant; andafter the charging of the power storage device is started, increasing the pressure of the reactant gas over time. 17. The method according to claim 11, further comprising: increasing the target generating power of the fuel cell from a lower generating power limit to an upper generating power limit;wherein the lower generating power limit is set to a minimum value required for power generation by the fuel cell; andwherein the upper generating power limit is set to a maximum value for power generation performance of the fuel cell system. 18. The method according to claim 11, further comprising: increasing the target generating power of the fuel cell from a lower generating power limit to an upper generating power limit;wherein the lower generating power limit is set to a minimum value required for power generation by the fuel cell; andwherein the upper generating power limit is set to the sum of the lower target generating power limit and a maximum consuming power of the power consuming equipment. 19. A fuel cell system comprising: a fuel cell configured to cause reactant gas to be electrochemically reacted to generate electrical power when the reactant gas is supplied to the fuel cell;power consuming means operable to consume electrical power generated by the fuel cell, the power consuming means including reactant gas supply means configured to supply the reactant gas to the fuel cell and heating means configured to heat coolant supplied to the fuel cell; andcontrol means for controlling operation of the fuel cell;wherein during a warm-up operation, the reactant gas supply means starts a flow of the reactant gas such that the reactant gas supply means consumes power, and the reactant gas supply means increases the flow of the reactant gas over time such that the power consumed by the reactant gas supply means increases over time; andwherein after the reactant gas supply means starts to consume a predetermined power increased by the increased flow of the reactant gas, the heating means starts heating the coolant supplied to the fuel cell such that the heating means consumes power.
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이 특허에 인용된 특허 (1)
Hsu Michael S., Pressurized, integrated electrochemical converter energy system.
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