Energy supply system and energy supply method for vehicle subsystems
First Claim
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1. An energy supply system for an electrically operated vehicle subsystem of a motor vehicle having an engine, a driven wheel, and a battery, comprising:
- a generator adapted to be driven by the vehicle engine to provide electrical energy to the vehicle subsystem and for charging the vehicle battery;
a control unit for setting an input power provided to the generator by the vehicle engine; and
at least one interface for connecting the vehicle subsystem to the control unit and for transferring power request signals of the vehicle subsystem to the control unit, wherein the control unit is configured to set the output voltage of the generator based on a power request of the vehicle subsystem, wherein the vehicle subsystem includes a transmission for transferring torque from the engine to the driven wheel and a comparator to compare a voltage available at the transmission with a threshold value, the vehicle subsystem being operable to transmit a power request signal via the interface to the control unit based on the comparison of the voltage to the threshold value.
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Abstract
An energy supply system for electrical actuator of a motor vehicle having a engine and battery includes a generator adapted to be driven by the vehicle engine to provide electrical energy to the electric actuator and vehicle battery. A control unit sets an input power provided to the generator by the vehicle engine and is configured to set the output voltage of the generator based on a power request associated with the electric actuator. A method for supplying electrical energy to a vehicle subsystem may be performed using an energy supply system as disclosed.
12 Citations
12 Claims
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1. An energy supply system for an electrically operated vehicle subsystem of a motor vehicle having an engine, a driven wheel, and a battery, comprising:
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a generator adapted to be driven by the vehicle engine to provide electrical energy to the vehicle subsystem and for charging the vehicle battery; a control unit for setting an input power provided to the generator by the vehicle engine; and at least one interface for connecting the vehicle subsystem to the control unit and for transferring power request signals of the vehicle subsystem to the control unit, wherein the control unit is configured to set the output voltage of the generator based on a power request of the vehicle subsystem, wherein the vehicle subsystem includes a transmission for transferring torque from the engine to the driven wheel and a comparator to compare a voltage available at the transmission with a threshold value, the vehicle subsystem being operable to transmit a power request signal via the interface to the control unit based on the comparison of the voltage to the threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for supplying electrical energy to an actuator of a transmission for a vehicle, comprising:
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determining a voltage available at the transmission actuator using a comparator coupled to the transmission of the vehicle; comparing the determined voltage to a threshold value sufficient to drive the transmission actuator; sending a power request signal from the comparator via an interface to a control unit of a generator when the voltage at the actuator is not greater than the threshold value and a transmission switching procedure is requested; and setting an output voltage of the generator to meet the power request. - View Dependent Claims (10, 11, 12)
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Specification