Power output device with fuel cell and method therefor
First Claim
1. A power output device comprising:
- a fuel cell;
a fuel cell characteristic detecting device which detects a characteristic of the fuel cell;
a calculation device that calculates a parameter corresponding to a possible electric power of the fuel cell derived from data stored in a memory based on the characteristic detected by the cell characteristic detecting device;
a determining device that compares the calculated parameter with a predetermined value and for determining whether the possible electric power constitutes a power shortage; and
a notification device that provides a notification of the power shortage to a user or driver when the determining device has determined that a power shortage exists.
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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.
10 Citations
23 Claims
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1. A power output device comprising:
- a fuel cell;
a fuel cell characteristic detecting device which detects a characteristic of the fuel cell;
a calculation device that calculates a parameter corresponding to a possible electric power of the fuel cell derived from data stored in a memory based on the characteristic detected by the cell characteristic detecting device;a determining device that compares the calculated parameter with a predetermined value and for determining whether the possible electric power constitutes a power shortage; and a notification device that provides a notification of the power shortage to a user or driver when the determining device has determined that a power shortage exists. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20)
- a fuel cell;
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13. A power output device comprising:
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a fuel cell;
a cell characteristic detecting device that detects a temperature of the fuel cell;a calculation device which calculates a possible electric power of the fuel cell based on the detected temperature; a determining device that determines whether the possible electric power from the fuel cell constitutes a power shortage on the basis of the calculated possible electric power calculated by the calculation device; and a notification device that provides a notification of the power shortage to a user or driver when the existence of a power shortage has been determined by the determining device. - View Dependent Claims (21, 22, 23)
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Specification