Power output device with fuel cell and method therefor
First Claim
1. A power output device, comprising:
- 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 a possible electric power derived from data stored in a memory as a function of a state of at least one of the fuel cell and the secondary battery;
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 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.
8 Citations
23 Claims
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1. 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 a possible electric power derived from data stored in a memory as a function of a state of at least one of the fuel cell and the secondary battery; 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 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, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification