Hybrid electric vehicle incorporating an integrated propulsion system
First Claim
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1. A hybrid electric vehicle drive system, comprising:
- a combustion engine;
an electric motor; and
at least one nickel metal hydride battery module providing electric power to said electric motor, said at least one nickel metal hydride battery module having an internal resistance effective to provide a peak power density in relation to an energy density as defined by;
P>
1,420−
16E, with P 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.
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Abstract
A hybrid electric vehicle drive system comprising a combustion engine, an electric motor and at least one nickel metal hydride battery module forming a power source for providing electric power to the electric motor, the at least one nickel metal battery module having a peak power density in relation to energy density as defined by:
where P is the peak power density as measured in Watts/kilogram and E is the energy density as measured in Watt-hours/kilogram.
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Citations
15 Claims
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1. A hybrid electric vehicle drive system, comprising:
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a combustion engine;
an electric motor; and
at least one nickel metal hydride battery module providing electric power to said electric motor, said at least one nickel metal hydride battery module having an internal resistance effective to provide a peak power density in relation to an energy density as defined by;
P>
1,420−
16E, with P 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A hybrid electric vehicle incorporating an integrated propulsion system, comprising:
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a power system comprising;
a combustion engine, and an electric motor; and
at least one nickel-metal hydride battery module coupled to said power system and providing electric power to said electric motor, said battery module having an internal resistance effective to provide a peak power density in relation to an energy density as defined by;
P>
1,420−
16E, with P 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. - View Dependent Claims (11, 12, 13, 14, 15)
a regenerative braking system providing charging current for said at least one nickel metal hydride battery module.
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12. The hybrid electric vehicle of claim 10, further comprising a cooling system for cooling said at least one nickel metal hydride battery module.
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13. The hybrid electric vehicle of claim 10, wherein said peak power density is greater than 700 Watts/kilogram.
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14. The hybrid electric vehicle of claim 10, wherein said energy density is at least 70 Watt-hours/kilogram.
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15. The hybrid electric vehicle of claim 10, wherein said peak power density is at least 1000 Watts/kilogram.
Specification