METHOD AND SYSTEM FOR POWER CONTROL IN AN AUTOMOTIVE VEHICLE
First Claim
1. A method for controlling a hybrid fuel cell vehicle including a fuel cell system and an energy storage unit, the method comprising:
- determining a fuel cell system power to raise the state of energy of the energy storage unit and satisfy vehicle power demand that generally minimizes hydrogen consumption by the fuel cell system; and
operating the fuel cell system to generate the determined fuel cell system power.
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Accused Products
Abstract
A method for controlling a vehicle including a fuel cell system and an energy storage unit includes, if the fuel cell system is charging the energy storage unit, determining an average ratio of (i) a change in energy stored in the energy storage unit and (ii) a mass of hydrogen consumed by the fuel cell system to generate the change in energy stored in the energy storage unit. The method also includes, if the fuel cell system is not charging the energy storage unit, selecting a target operating power for the fuel cell system based on vehicle power demand and the determined ratio that sufficiently minimizes drive cycle hydrogen consumption by the fuel cell system.
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Citations
13 Claims
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1. A method for controlling a hybrid fuel cell vehicle including a fuel cell system and an energy storage unit, the method comprising:
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determining a fuel cell system power to raise the state of energy of the energy storage unit and satisfy vehicle power demand that generally minimizes hydrogen consumption by the fuel cell system; and operating the fuel cell system to generate the determined fuel cell system power. - View Dependent Claims (2)
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3. A hybrid fuel cell vehicle propulsion system comprising:
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an energy storage unit; a fuel cell module; and a controller configured to, if the fuel cell system is charging the energy storage unit, determine an average ratio of (i) a change in energy stored in the energy storage unit and (ii) a mass of hydrogen consumed by the fuel cell system to generate the change in energy stored in the energy storage unit, and if the fuel cell system is not charging the energy storage unit, select a target operating power for the fuel cell system based on vehicle power demand and the determined ratio that generally minimizes drive cycle hydrogen consumption by the fuel cell system. - View Dependent Claims (4, 5, 6, 7, 8)
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9. A method for controlling a vehicle including a fuel cell system and an energy storage unit, the method comprising:
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if the fuel cell system is charging the energy storage unit, determining an average ratio of (i) a change in energy stored in the energy storage unit and (ii) a mass of hydrogen consumed by the fuel cell system to generate the change in energy stored in the energy storage unit; and if the fuel cell system is not charging the energy storage unit, selecting a target operating power for the fuel cell system based on vehicle power demand and the determined ratio that sufficiently minimizes drive cycle hydrogen consumption by the fuel cell system. - View Dependent Claims (10, 11, 12, 13)
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Specification