A method is provided that includes propelling an electrically driven vehicle at a first, slower speed, and potentially high torque by supplying electricity at a first, lower voltage from an energy storage device to a second electric motor; and includes propelling the vehicle at a second, faster spee
A method is provided that includes propelling an electrically driven vehicle at a first, slower speed, and potentially high torque by supplying electricity at a first, lower voltage from an energy storage device to a second electric motor; and includes propelling the vehicle at a second, faster speed, and moderate torque by supplying electricity at a second, higher voltage from an engine-driven generator to a first electric motor. Another method includes propelling an electrically driven vehicle by supplying electricity from an engine-driven generator to a first electric motor; and generating electricity at a second electric motor to charge an energy storage device. Corresponding systems for implementing the method are provided.
대표청구항▼
1. A method, comprising: propelling an electrically driven vehicle at a first, slower speed and high torque by supplying electricity at a first, lower voltage from a first energy storage device to a second electric motor; andpropelling the vehicle at a second, faster speed and moderate torque by sup
1. A method, comprising: propelling an electrically driven vehicle at a first, slower speed and high torque by supplying electricity at a first, lower voltage from a first energy storage device to a second electric motor; andpropelling the vehicle at a second, faster speed and moderate torque by supplying electricity at a second, higher voltage from an engine-driven generator to a first electric motor, wherein the first electric motor is not coupled to the first energy storage device. 2. The method as defined in claim 1, further comprising charging the energy storage device by converting mechanical energy during a braking mode of operation of the second electric motor to electrical energy. 3. The method as defined in claim 1, further comprising selecting from a plurality of modes of operation an operating mode in which a greater than full motive power propels the vehicle relative to another operating mode in which power from a prime mover combines with energy supplied from one or more energy storage devices that include the first energy storage device. 4. The method as defined in claim 1, further comprising selecting from a plurality of modes of operation an operating mode in which all propulsive power supplied to one or more traction motors is energy supplied from one or more energy storage devices that include the first energy storage device. 5. The method as defined in claim 1, further comprising selecting from a plurality of modes of operation an operating mode in which all propulsive power supplied to one traction motor is energy supplied from one or more energy storage devices that include the first energy storage device, and in which all propulsive power supplied to another traction motor is energy supplied from the engine-driven generator. 6. The method as defined in claim 1, further comprising switching an arrangement of batteries to and from a serial configuration and a parallel configuration based on at least one criteria relating to vehicle speed, vehicle efficiency, vehicle wheel torque, or power requirement. 7. The method as defined in claim 1, further comprising charging the first energy storage device by converting mechanical energy during a braking mode of operation of a third traction drive system and an associated third electric motor to electrical energy. 8. The method as defined in claim 1, further comprising applying a torque command to the first electric motor that is opposite polarity to a torque command supplied to the second electric motor. 9. The method as defined in claim 8, further comprising charging the energy storage device. 10. A method, comprising: propelling an electrically driven vehicle by supplying electricity from an engine-driven generator to a first electric motor; andgenerating electricity at a second electric motor to charge an energy storage device without regenerative braking by applying a torque command to the first electric motor that is opposite polarity to a torque command supplied to the second electric motor. 11. The method as defined in claim 10, wherein the propelling and generating occur simultaneously. 12. The method as defined in claim 10, wherein the propelling and generating occur sequentially, and in which the propelling provides momentum to the vehicle prior to the generating electricity. 13. A method, comprising: monitoring for component failure in a second traction drive system in a vehicle having at least a first traction drive system and the second traction drive system, wherein the first traction drive system comprises a first electric motor and the second traction drive system comprises a second electric motor coupled to a first energy storage device; andresponding to a component failure indication of the first traction drive system by:routing energy to and from the first electric motor to a second energy storage device, orrouting energy to and from the first energy storage device to the second electric motor. 14. The method as defined in claim 13, wherein the failure indication indicates the first energy storage device, and further comprising electrically isolating at least one battery disposed in the first energy storage device. 15. The method as defined in claim 13, wherein responding to the component failure indication comprises selecting a response based on a nature of the component failure and on a type of component that failed. 16. A method, comprising: initiating a braking event calling for an amount of a required braking power for a vehicle having an electric motor that can drive a wheel, and having an energy storage device, an electric converter, and a power switch coupled to the electric motor;determining a first available braking power based on a component limiting factor determined by at least one of: power capacity of the electric motor,torque capacity of the electric motor,maximum adhesion limit of the wheel on a wheel-bearing surface,electrical uptake capacity of the energy storage device,electrical rating capacity of the electronic converter, orelectrical rating capacity of the power switch; andcomparing the first available braking power to the required braking power;meeting the required braking power first with the first available braking power; andsupplementing the first available braking power with a second available braking power where the first available braking power is insufficient to meet the required braking power, and the second available braking power is based on at least a capacity of a dynamic braking grid resistor array coupled thereto. 17. The method as defined in claim 16, wherein the energy storage device is a power battery, and further comprising routing energy from the energy storage device to a second energy storage device comprising an energy battery at a rate of electrical uptake that is based on the energy battery. 18. The method as defined in claim 16, wherein the energy storage device comprises both a power battery and an energy battery, further comprising determining an electrical uptake capacity based on a combination of electrical uptake capacity of both the energy battery and the power battery. 19. The method as defined in claim 16, further comprising recharging the energy storage device preferentially over the supplementing the first available braking power. 20. A system, comprising: means for propelling an electrically driven vehicle at a first, slower speed and high torque by supplying electricity at a first, lower voltage from a first energy storage device to a second electric motor; andmeans for propelling the vehicle at a second, faster speed and moderate torque by supplying electricity at a second, higher voltage from an engine-driven generator to a first electric motor, wherein the first electric motor is not coupled to the first energy storage device. 21. A system, comprising: means for propelling an electrically driven vehicle by supplying electricity from an engine-driven generator to a first electric motor; andmeans for generating electricity at a second electric motor to charge an energy storage device without regenerative braking by applying a torque command to the first electric motor that is opposite polarity to a torque command supplied to the second electric motor. 22. A system, comprising: means for initiating a braking event calling for an amount of a required braking power for a vehicle having an electric motor that can drive a wheel, and having an energy storage device, an electric converter, and a power switch coupled to the electric motor;means for determining a first available braking power based on a component limiting factor determined by at least one of: power capacity of the electric motor,torque capacity of the electric motor,maximum adhesion limit of the wheel on a wheel-bearing surface,electrical uptake capacity of the energy storage device,electrical rating capacity of the electronic converter, orelectrical rating capacity of the power switch; andmeans for comparing the first available braking power to the required braking power;means for meeting the required braking power first with the first available braking power; and means for supplementing the first available braking power with a second available braking power where the first available braking power is insufficient to meet the required braking power, and the second available braking power is based on at least a capacity of a dynamic braking grid resistor array coupled thereto.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (24)
Boskovitch, Paul E.; Simopoulos, Gregory N., Battery pack for a battery-powered vehicle.
Salasoo,Lembit; King,Robert Dean; Kumar,Ajith Kuttannair; Song,Dongwoo; Young,Henry Todd; Richter,Timothy Gerard; Bhugra,Prahlad, Vehicle energy storage system control methods and method for determining battery cycle life projection for heavy duty hybrid vehicle applications.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.