ACG output voltage control
First Claim
Patent Images
1. A generator control system that provides generator control for a vehicle power system, comprising:
- a battery;
a generator that outputs power to charge the battery, the generator operable in one of two modes including a HI voltage output mode and a LO voltage output mode;
a sensor that detects a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery; and
a controller that controls a voltage output mode of the generator in response to at least one of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, the voltage output mode is in response to the SOC and the temperature of the battery, wherein the controller provides a control signal to the generator based upon the SOC detected by the sensor, said control signal instructing the generator to operate in a selected one of the two modes when the SOC is outside a determined range, and wherein the control signal instructs the generator to operate in the LO voltage output mode when the SOC is above a first predetermined fixed threshold and instructs the generator to operate in the HI voltage output mode when the SOC is below a second predetermined fixed threshold, said first predetermined fixed threshold being greater than said second predetermined fixed threshold.
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Abstract
A system provides generator control for a power system within a vehicle. The system includes a battery, a generator that outputs power to charge the battery. A sensor detects a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery. A controller controls a voltage output mode of the generator in response to at least one of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, the voltage output mode is in response to the SOC and the temperature of the battery.
112 Citations
21 Claims
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1. A generator control system that provides generator control for a vehicle power system, comprising:
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a battery; a generator that outputs power to charge the battery, the generator operable in one of two modes including a HI voltage output mode and a LO voltage output mode; a sensor that detects a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery; and a controller that controls a voltage output mode of the generator in response to at least one of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, the voltage output mode is in response to the SOC and the temperature of the battery, wherein the controller provides a control signal to the generator based upon the SOC detected by the sensor, said control signal instructing the generator to operate in a selected one of the two modes when the SOC is outside a determined range, and wherein the control signal instructs the generator to operate in the LO voltage output mode when the SOC is above a first predetermined fixed threshold and instructs the generator to operate in the HI voltage output mode when the SOC is below a second predetermined fixed threshold, said first predetermined fixed threshold being greater than said second predetermined fixed threshold. - View Dependent Claims (2, 3, 4)
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5. A system that provides generator control for a vehicle power system, comprising:
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a battery; a generator that outputs power to charge the battery; a sensor that detects a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery; and a controller that controls a voltage output mode of the generator in response to at least one of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, the voltage output mode is in response to the SOC and the temperature of the battery, wherein the output voltage of the generator is substantially inversely proportional to the temperature of the battery.
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6. In a vehicle having an engine that drives an electric power generator arranged to selectively provide electric power to an electrical load of the vehicle and to selectively charge a battery of the vehicle, a method for controlling a voltage output mode of the generator comprising:
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determining a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery in the vehicle with a sensor; receiving at a controller from the sensor the state of charge (SOC), the health valve, the voltage, the current, the temperature and the charging voltage of the battery; and controlling a voltage output mode of the generator with the controller in response to at least one of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, the voltage output mode is in response to the SOC and the temperature of the battery, wherein the output voltage of the generator is substantially inversely proportional to the temperature of the battery.
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7. A generator control system that provides generator control for a vehicle power system, comprising:
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a battery; a generator that outputs power to charge the battery, the generator operable in one of two modes including a HI voltage output mode and a LO voltage output mode; a sensor that detects a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery; and a controller that controls a voltage output mode of the generator in response to at least one of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, the voltage output mode is in response to the SOC and the temperature of the battery, wherein the controller provides a control signal to the generator based upon the SOC detected by the sensor, said control signal instructing the generator to operate in a selected one of the two modes when the SOC is outside a determined range, wherein the output voltage of the generator is substantially inversely proportional to the temperature of the battery.
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8. In a vehicle having an engine that drives an electric power generator arranged to selectively provide electric power to an electrical load of the vehicle and to selectively charge a battery of the vehicle, a method for controlling a voltage output mode of the generator comprising:
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determining a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery in the vehicle with a sensor; receiving at a controller from the sensor the state of charge (SOC), the health valve, the voltage, the current, the temperature and the charging voltage of the battery; and controlling a voltage output mode of the generator with the controller in response to at least one of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, the voltage output mode is in response to the SOC and the temperature of the battery, wherein controlling the voltage output mode includes;
compelling the generator to operate in a selected one of a HI voltage output mode and a LO voltage output mode when the SOC is outside a determined range,wherein the step of compelling comprises; comparing the SOC to a first predetermined fixed threshold and a second predetermined fixed threshold, said first predetermined fixed threshold being greater than said second predetermined fixed threshold; and compelling the generator to operate in the LO voltage output mode if the SOC is greater than the first predetermined fixed threshold, and compelling the generator to operate in the HI voltage output mode if the SOC is less than the second predetermined fixed threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system that provides generator control for a vehicle power system, comprising:
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a battery; a generator that outputs power to charge the battery; a sensor that detects a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery; and a controller that controls a voltage output mode of the generator in response to at least one of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, the voltage output mode is linearly related to the SOC and the temperature of the battery, wherein the controller employs a control signal to select the voltage output mode of the generator from a plurality of finite voltage states, and wherein the control signal instructs a voltage offset from a predetermined value based at least in part on the SOC value, and wherein the voltage output of the generator is selected from a plurality of finite voltage states based on one or more of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, wherein the generator is operable in one of two modes including a HI voltage output mode and a LO voltage output mode and the controller instructs the generator to operate in a selected one of the two modes when the SOC is outside a determined range, wherein controller instructs the generator to operate in the LO voltage output mode when the SOC is above a first predetermined fixed threshold and instructs the generator to operate in the HI voltage output mode when the SOC is below a second predetermined fixed threshold, said first predetermined fixed threshold being greater than said second predetermined fixed threshold. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification