Method for the management of the electrical current supply in a motor vehicle
First Claim
1. A method for managing current supply in a vehicle comprising:
- in response to a discrete variable generated using a battery monitoring sensor indicating that a charge state of a battery is less than a calibrated threshold value, charging the battery using a voltage setpoint over a predetermined time period such that cells of the battery are charged to a target; and
in response to the discrete variable indicating that the charge state is greater than the calibrated threshold value, setting a voltage setpoint for an electric generator based on a parameter indicative of drivetrain efficiency and a parameter indicative of temperature of the battery.
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Abstract
This disclosure relates to a method for the management of the electrical current supply in a motor vehicle having a combustion engine, wherein the charge state of a battery is detected and characterized as a discrete variable that indicates whether the prevailing charge state is below or above a calibrated threshold value. If the discrete variable indicates that the prevailing charge state is below the calibrated threshold value, the battery is charged using a relatively high voltage over a predetermined time period in such a manner that all cells of the battery are charged. If the discrete variable indicates that the prevailing charge state is above the calibrated threshold value, different temperature-dependent voltage set points of an electric generator in the vehicle are set in dependence upon a prevailing energy conversion efficiency level of the drivetrain that is detected and characterized as a further discrete variable.
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Citations
11 Claims
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1. A method for managing current supply in a vehicle comprising:
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in response to a discrete variable generated using a battery monitoring sensor indicating that a charge state of a battery is less than a calibrated threshold value, charging the battery using a voltage setpoint over a predetermined time period such that cells of the battery are charged to a target; and in response to the discrete variable indicating that the charge state is greater than the calibrated threshold value, setting a voltage setpoint for an electric generator based on a parameter indicative of drivetrain efficiency and a parameter indicative of temperature of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
by a controller, responsive to a discrete variable generated using a battery monitoring sensor indicating state of charge (SOC) less than a threshold, operating a generator at a voltage setpoint for a predetermined duration such that battery cells are charged to a target; and responsive to the discrete variable indicating SOC greater than the threshold, operating the generator at a voltage setpoint set according to drivetrain efficiency and battery temperature.
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9. A method for management of electrical current supply in a vehicle having a combustion engine, wherein a charge state of a battery that can provide current for a starter, ignition and lighting is detected and characterized as a discrete variable generated using a battery monitoring sensor that indicates whether the charge state is below or above a calibrated threshold value, the method comprising:
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if the discrete variable indicates that the charge state is below the calibrated threshold value, charging the battery using a voltage setpoint over a predetermined time period in such a manner that cells of the battery are charged; and if the discrete variable indicates that the charge state is above the calibrated threshold value, in dependence upon a drivetrain energy conversion efficiency level that is detected and characterized as a further discrete variable, setting different temperature-dependent voltage set points of an electric generator in the vehicle. - View Dependent Claims (10, 11)
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Specification