Power output device with fuel cell and method therefor
First Claim
1. A power output device comprising:
- a fuel cell;
a calculation device that calculates a parameter corresponding to a maximum possible electric power from the fuel cell;
a determining device that compares the calculated parameter with a predetermined value and for determining a state of a power shortage of electric power; and
a notification device that provides notification of the power shortage when the state of power shortage is determined by the determining device.
1 Assignment
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Accused Products
Abstract
An output limitation warning lamp is turned on when a possible output Qf of the fuel cell is less than a predetermined value L2. The output limitation warning lamp is provided at a combination meter in an instrument panel. The output limitation warning lamp is also turned on when a possible output Qb of the secondary battery is less than a predetermined value L3. Furthermore, the output limitation warning lamp is also turned on when an allowable drive output Qh, which is the sum of the possible output Qf of the fuel cell and the possible output Qb of the secondary battery, has been less than a required output Ed* calculated at a step before carrying out output limitation to more than a certain extent for longer than a predetermined length of time.
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Citations
43 Claims
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1. A power output device comprising:
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a fuel cell;
a calculation device that calculates a parameter corresponding to a maximum possible electric power from the fuel cell;
a determining device that compares the calculated parameter with a predetermined value and for determining a state of a power shortage of electric power; and
a notification device that provides notification of the power shortage when the state of power shortage is determined by the determining device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power output device comprising:
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a fuel cell;
a secondary battery which can be charged with an output from the fuel cell;
a calculation device that calculates a parameter corresponding to a possible electric power from the secondary battery;
a determining device that compares the calculated parameter with a predetermined value and for determining a state of a power shortage which is a shortage of the possible electric power from the secondary battery; and
a notification device that provides notification of the power shortage when the state of power shortage is determined by the determining device. - View Dependent Claims (11, 12, 13, 15, 18, 20, 21, 22, 23, 26, 27, 29, 30, 31)
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14. A power output device comprising:
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a fuel cell;
a secondary battery which can be charged with an output from the fuel cell;
an inverter for driving a motor with a supplied output from at least one of the fuel cell and the secondary battery;
a calculation device that calculates a parameter corresponding to the sum of a possible electric power from the fuel cell and the secondary battery;
a determining device that compares the calculated parameter with a predetermined value and for determining a state of a power shortage which is a shortage of the sum of the possible electric power; and
a notification device that provides notification of power shortage when the state of power shortage is determined through the determining device.
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16. A power output device comprising:
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a fuel cell;
a secondary battery which can be charged with an output from the fuel cell;
a first arithmetic device that calculates a first parameter corresponding to a possible electric power from the fuel cell;
a first determining device that compares the calculated first parameter with a first predetermined value and for determining a state of a power shortage which is a shortage of the possible electric power from the fuel cell;
a second arithmetic device that calculates a second parameter corresponding to a possible electric power from the secondary battery;
a second determining device that compares the calculated second parameter with a second predetermined value and for determining a state of power shortage which is a shortage of the possible electric power from the secondary battery; and
a notification device that provides notification of the power shortage when the state of power shortage is detected through either the first or second determining device.
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17. A power output device comprising:
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a fuel cell;
a fuel cell maximum output calculating device that calculates a possible maximum output from the fuel cell when a load is not applied on the power output device;
a device maximum output calculating device that uses the calculated maximum output of the fuel cell for calculating a possible maximum output from the power output device;
a determining device that determines a state of power shortage in which the calculated maximum output of the power output device is less than a predetermined value; and
a notification device that provides notification of the determined power shortage.
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19. A power output device comprising:
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a fuel cell;
a fuel cell maximum output calculating device that calculating a possible maximum output from the fuel cell when a load is not applied on the power output device;
a device maximum output calculating device that uses the calculated maximum output of the fuel cell for calculating a possible maximum output from the power output device; and
an indication device that indicates the maximum output of the power output device calculated through the device maximum output calculating device when the load is applied on the power output device.
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24. A power output device comprising:
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a fuel cell;
a secondary battery which can be charged with an output from the fuel cell;
a fuel cell maximum output calculating device that calculates a possible maximum output from the fuel cell when a load is not applied on the power output device;
a device maximum output calculating device that calculates the sum of the calculated maximum output of the fuel cell and a possible maximum output from the secondary battery as a possible maximum output from the power output device;
a determining device that determines a state of power shortage in which the calculated maximum output of the power output device is less than a predetermined value; and
a notification device that provides notification of the determined power shortage.
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25. A power output device comprising:
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a fuel cell;
a secondary battery which can be charged with an output from the fuel cell;
a fuel cell maximum output calculating device that calculates a possible maximum output from the fuel cell when a load is not applied on the power output device;
a device maximum output calculating device that calculates the sum of the calculated maximum output of the fuel cell and a possible maximum output from the secondary battery as a possible maximum output from the power output device; and
an indication device that indicates the maximum output calculated through the device maximum output calculating device when the load is applied on the power output device.
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28. A power output device comprising:
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a fuel cell;
a device maximum output calculating device that calculates a possible maximum output from the power output device;
a current output calculating device that calculates a current output from the power output device; and
an indication device that enables comparative indication of the maximum output calculated through the device maximum output calculating device and the current output calculated through the current output calculating device.
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32. A method of outputting power from a fuel cell as an energy source, comprising the steps of:
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(a) calculating a parameter corresponding to a possible electric power from the fuel cell;
(b) determining a state of power shortage, which is a shortage of the possible electric power, by comparing the calculated parameter with a predetermined value; and
(c) providing notification of the state of the power shortage when the state of power shortage is determined in step (b).
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33. A method of outputting power from a fuel cell and a secondary battery which can be charged with an output from the fuel cell, as energy sources, comprising the steps of:
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(a) calculating a parameter corresponding to a possible electric power from the secondary battery;
(b) determining a state of power shortage, which is a shortage of the possible electric power from the secondary battery, by comparing the calculated parameter with a predetermined value; and
(c) providing notification of the state of power shortage when the state of power shortage is determined in step (b). - View Dependent Claims (38, 39)
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34. A method of outputting power for controlling a power output device with a fuel cell, a secondary battery which can be charged with an output from the fuel cell, and an inverter for driving a motor with a supplied output from at least one of the fuel cell and the secondary battery, comprising the steps of:
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(a) calculating a required output of the motor;
(b) calculating a parameter corresponding to the sum of a possible electric power from the fuel cell and the secondary battery;
(c) determining a state of power shortage, which is a shortage of the sum of the electric power, by comparing the calculated parameter with a predetermined value; and
(d) providing notification of the state of power shortage when the state of power shortage is determined in step (c).
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35. A method of outputting power from a fuel cell and a secondary battery which can be charged with an output from the fuel cell, as energy sources, comprising the steps of:
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(a) calculating a first parameter corresponding to a possible electric power from the fuel cell;
(b) determining a state of power shortage, which is a shortage of the possible electric power from the fuel cell, by comparing the calculated first parameter with a first predetermined value;
(c) calculating a second parameter corresponding to a possible electric power from the secondary battery;
(d) determining a state of power shortage, which is a shortage of the possible electric power from the secondary battery, by comparing the calculated second parameter with a second predetermined value; and
(e) providing notification of the state of power shortage when the state of power shortage is determined in one of steps (b)and (d).
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36. A method of outputting power from a fuel cell as an energy source, comprising the steps of:
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(a) calculating a possible maximum output from the fuel cell when a load is not applied on the power output device;
(b) calculating a possible maximum output from the power output device by using the calculated maximum output of the fuel cell;
(c) determining a state of power shortage in which the calculated maximum output of the power output device is less than a predetermined value; and
(d) providing notification of the determined state of power shortage.
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37. A method of outputting power from a fuel cell as an energy source, comprising the steps of:
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(a) calculating a possible maximum output from the fuel cell when a load is not applied on the power output device;
(b) calculating a possible maximum output from the power output device by using the calculated maximum output of the fuel cell; and
(c) indicating the maximum output of the power output device calculated through step (b) when the load is applied on the power output device.
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40. A method of outputting power from a fuel cell and a secondary battery which can be charged with an output from the fuel cell, comprising the steps of:
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(a) calculating a possible maximum output from the fuel cell when a load is not applied on the power output device;
(b) calculating the sum of the calculated maximum output of the fuel cell and a possible maximum output from the secondary battery as a maximum output of the power output device;
(c) determining a state of power shortage in which the maximum output calculated through step (b) is less than a predetermined value; and
(d) providing notification of the determined state of power shortage.
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41. A method of outputting power from a fuel cell and a secondary battery, which can be charged with an output from the fuel cell, comprising the steps of:
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(a) calculating a possible maximum output from the fuel cell when a load is not applied on the power output device;
(b) calculating the sum of the calculated maximum output of the fuel cell and a possible maximum output from the secondary battery as a maximum output of the power output device; and
(c) indicating the maximum output calculated through step (b) when the load is applied on the power output device.
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42. A method of outputting power from a fuel cell as an energy source, comprising the steps of:
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(a) calculating a possible maximum output;
(b) calculating a current output; and
(c) indicating both the maximum output calculated through step (a) and the current output calculated through step (b) for comparison. - View Dependent Claims (43)
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Specification