Very low emission hybrid electric vehicle incorporating an integrated propulsion system including a fuel cell and a high power nickel metal hydride battery pack
First Claim
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1. A very low emission hybrid electric vehicle drive system comprising:
- an electric motor;
at least one nickel-metal hydride battery module for powering said electric motor; and
a fuel cell for powering said electric motor and recharging said at least one nickel-metal hydride battery module;
a source of power for recharging said nickel metal hydride battery module and providing energy to said fuel cell allowing said fuel cell to operate in reverse as an electrolyzer, thereby producing a supply of hydrogen;
a hydrogen storage unit for supplying a stream of hydrogen to said fuel cell and storing said supply of hydrogen produced by said fuel cell when operating in reverse as an electrolyzer.
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Abstract
A very low emission hybrid electric vehicle incorporating an integrated propulsion system which includes a fuel cell, a metal hydride hydrogen storage unit, an electric motor, high specific power, high energy density nickel-metal hydride (NiMH) batteries, and preferably a regenerative braking system. The nickel-metal hydride battery module preferably has a peak power density in relation to energy density as defined by:
P>1,375−15E,
where P is greater than 600 Watts/kilogram, where P is the peak power density as measured in Watts/kilogram and E is the energy density as measured in Watt-hours/kilogram.
55 Citations
63 Claims
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1. A very low emission hybrid electric vehicle drive system comprising:
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an electric motor;
at least one nickel-metal hydride battery module for powering said electric motor; and
a fuel cell for powering said electric motor and recharging said at least one nickel-metal hydride battery module;
a source of power for recharging said nickel metal hydride battery module and providing energy to said fuel cell allowing said fuel cell to operate in reverse as an electrolyzer, thereby producing a supply of hydrogen;
a hydrogen storage unit for supplying a stream of hydrogen to said fuel cell and storing said supply of hydrogen produced by said fuel cell when operating in reverse as an electrolyzer. - 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, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
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Specification