Control system for hybrid vehicles with reconfigurable multi-function power converter
First Claim
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1. A drive system of a hybrid vehicle, comprising:
- an engine and an electric motor which provide power to the vehicle;
a primary energy storage device which stores electrical energy;
a secondary energy storage device which stores electrical energy;
an electronic control unit that monitors a state of charge of said primary energy storage device and said secondary energy storage device; and
a power converter which is operable to interface with an external electrical grid, said power converter manipulates power transfer between said primary energy storage device and said secondary energy storage device, and charges said secondary energy storage device,wherein said electronic control unit calculates a charge limit for said secondary energy storage device based on a charge limit table configured to identify a relationship between the voltage of the electrical grid and the charge limit so that said power converter maintains a charge current at the charge limit by setting a secondary state of charge set-point.
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Abstract
A multi-directional power conversion system for providing power to a motor of a hybrid vehicle includes an electric control unit; an electric motor which provides a driving force to the vehicle; a primary energy storage device; and a secondary energy storage device. An energy management system communicates parameters of the energy storage devices to the electronic control unit. A power manipulating device is coupled between the primary energy storage device and the secondary energy storage device that is configured to manage power between the energy sources and deliver electricity external the vehicle.
26 Citations
23 Claims
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1. A drive system of a hybrid vehicle, comprising:
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an engine and an electric motor which provide power to the vehicle; a primary energy storage device which stores electrical energy; a secondary energy storage device which stores electrical energy; an electronic control unit that monitors a state of charge of said primary energy storage device and said secondary energy storage device; and a power converter which is operable to interface with an external electrical grid, said power converter manipulates power transfer between said primary energy storage device and said secondary energy storage device, and charges said secondary energy storage device, wherein said electronic control unit calculates a charge limit for said secondary energy storage device based on a charge limit table configured to identify a relationship between the voltage of the electrical grid and the charge limit so that said power converter maintains a charge current at the charge limit by setting a secondary state of charge set-point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A multi-directional power conversion system for providing power to a motor of a hybrid vehicle comprising:
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an electric control unit; an electric motor which provides a driving force to the vehicle; a primary energy storage device; a secondary energy storage device; an energy management system which communicates parameters of said primary energy storage device and said secondary energy storage device to said electronic control unit; and a power manipulating device which is operable to interface with an external energy system, said power manipulating device is coupled between said primary energy storage device and said secondary energy storage device to manage power sent to said electric motor and to charge said secondary energy storage device, wherein said energy management system calculates a charge limit for said secondary energy storage device based on a charge limit table configured to identify a relationship between the voltage of the external energy system and the charge limit so that said power manipulating device maintains a charge current at the charge limit by setting a secondary state of charge set-point. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification