Method and device for predicting the starting capacity of a vehicle
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Abstract
A device for predicting the starting ability of a vehicle having an internal combustion engine and a starter which is supplied with electrical power by a vehicle battery. The starting ability of the vehicle can be determined particularly easily when a starting current characteristics map is stored in a device of the prediction system from which a starting current is determined under consideration of the state of charge of the battery after a predefined time period and the starting ability of the vehicle is determined from this via a prediction device.
17 Citations
26 Claims
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1-13. -13. (canceled)
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14. A device for predicting the starting ability of a vehicle having an internal combustion engine and a starter which is supplied with electrical power by a vehicle battery, comprising:
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a battery state detection device which determines a state of charge of the vehicle battery;
a first device which uses a discharge current curve to determine a charge drained from the vehicle battery during a predefined time period when the vehicle is shut off;
a second device which calculates the state of charge of the vehicle battery after the predefined time period;
a third device that determines an electrical battery variable in which a characteristics map of the electrical battery variable is stored as a function of the state of charge of the vehicle battery, a value of the electrical battery variable, which is present after the predefined time period, being read out from the characteristics map; and
a prediction device which uses the read out value of the electrical battery variable to determine whether or not the vehicle is able to start after the predefined time period. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for predicting the starting ability of a vehicle having an internal combustion engine and a starter which is supplied with electrical power by a vehicle battery, the method comprising:
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determining an instantaneous state of charge of the vehicle battery via a battery state detection device;
determining a charge drained from the vehicle battery during a predefined time period when the vehicle is shut off;
calculating the state of charge of the vehicle battery after the predefined time period;
determining an electrical battery variable based on the calculated state of charge of the vehicle battery from a characteristics map stored in a device; and
determining whether or not the vehicle is able to start after the predefined time period via a prediction device which determines the starting ability on the basis of the battery variable determined from the characteristics map. - View Dependent Claims (25, 26)
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Specification