Method for determining the remaining range of a motor vehicle, and motor vehicle
First Claim
1. A method for determining a residual range of a motor vehicle, in which the motor vehicle has an energy store for a drive which acts on at least one wheel of the motor vehicle, as a function of residual energy in the energy store, the drive comprising an electric motor, the method comprising:
- using at least one processor to;
determine a drive consumption value, the drive consumption value being indicative of past electric power consumption of the drive;
determine a secondary consumer consumption value, the secondary consumer consumption value being indicative of an average electric power consumption of a secondary consumer, the secondary consumer comprising an air conditioning system;
derive a plurality of drive prediction values from the drive consumption value, the drive prediction values relating to an electric power consumption prediction for the drive, each drive prediction value being assigned to a predetermined class of route section;
derive a secondary consumer prediction value, from the secondary consumer consumption value, the secondary consumer prediction value being determined separately from the drive prediction value, the secondary consumer prediction value relating to an electric power consumption prediction for the secondary consumer, the drive prediction value and the secondary consumer prediction value being determined with different calculation methods and/or differently parameterized calculation methods, the secondary consumer prediction value being adapted to at least one of current ambient conditions and residual energy in the energy store;
obtain route data describing a route to be traveled by the vehicle;
match the route to be travelled with various predetermined classes of route section to select at least one drive prediction value;
calculate the residual range for a distance to be traveled by the motor vehicle, according to route data, using the at least one drive prediction value selected and the secondary consumer prediction value; and
update the drive prediction value and the secondary consumer prediction value based on current electric power consumption of the drive and the secondary consumer during the distance traveled by the motor vehicle; and
outputting the residual range.
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Abstract
A method determines the remaining range of a motor vehicle which has an energy store for an electric motor drive which acts the wheels of the motor vehicle. Consumption values which describe the current consumption of the drive and of a secondary consumer are determined using a sensor. A drive prediction value which is assigned to the drive and describes the consumption over a predetermined distance is determined from the consumption values of the drive. A secondary consumption prediction value which is assigned to the secondary consumers and describes the consumption over a predetermined distance is determined separately from the consumption values of the secondary consumers, and the remaining range is determined for a distance which is to be travelled by the motor vehicle and is described by the route data, by taking into account the drive prediction value and the secondary consumption prediction value.
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Citations
19 Claims
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1. A method for determining a residual range of a motor vehicle, in which the motor vehicle has an energy store for a drive which acts on at least one wheel of the motor vehicle, as a function of residual energy in the energy store, the drive comprising an electric motor, the method comprising:
using at least one processor to; determine a drive consumption value, the drive consumption value being indicative of past electric power consumption of the drive; determine a secondary consumer consumption value, the secondary consumer consumption value being indicative of an average electric power consumption of a secondary consumer, the secondary consumer comprising an air conditioning system; derive a plurality of drive prediction values from the drive consumption value, the drive prediction values relating to an electric power consumption prediction for the drive, each drive prediction value being assigned to a predetermined class of route section; derive a secondary consumer prediction value, from the secondary consumer consumption value, the secondary consumer prediction value being determined separately from the drive prediction value, the secondary consumer prediction value relating to an electric power consumption prediction for the secondary consumer, the drive prediction value and the secondary consumer prediction value being determined with different calculation methods and/or differently parameterized calculation methods, the secondary consumer prediction value being adapted to at least one of current ambient conditions and residual energy in the energy store; obtain route data describing a route to be traveled by the vehicle; match the route to be travelled with various predetermined classes of route section to select at least one drive prediction value; calculate the residual range for a distance to be traveled by the motor vehicle, according to route data, using the at least one drive prediction value selected and the secondary consumer prediction value; and update the drive prediction value and the secondary consumer prediction value based on current electric power consumption of the drive and the secondary consumer during the distance traveled by the motor vehicle; and outputting the residual range.
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2. A method for determining a residual range of a motor vehicle as a function of residual energy, the motor vehicle having an energy store for a drive which acts on at least one wheel of the motor vehicle, the drive comprising an electric motor, the method comprising:
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determining a drive consumption value describing consumption of the drive, the drive consumption value being determined using a first sensor; determining a secondary consumer consumption value describing consumption of a secondary consumer, the secondary consumer consumption value being determined using a second sensor; deriving a drive prediction value from the drive consumption value, the drive prediction value relating to an electric power consumption prediction for the drive; deriving a secondary consumer prediction value from the secondary consumer consumption value, the secondary consumer prediction value relating to an electric power consumption prediction for the secondary consumer, the secondary consumer prediction value being determined separately from the drive prediction value, the drive prediction value and the secondary consumer prediction value being determined with different calculation methods and/or a differently parameterized calculation method; obtaining route data describing a route to be traveled by the vehicle; calculating the residual range as an available travel distance for the motor vehicle on a route determined from the route data, using the drive prediction value and the secondary consumer prediction value; and outputting the residual range, wherein the secondary consumer comprises an air conditioning system, and the secondary consumer prediction value is derived by at least one of; adapting the secondary consumer consumption value to current ambient conditions, and determining an average prior consumption value for the secondary consumer consumption value and adapting the time over which the secondary consumer consumption value is averaged based on residual energy in the energy store. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A motor vehicle, comprising:
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an energy store for a drive acting on at least one wheel of the motor vehicle; an electric motor; and a control device to; determine a drive consumption value describing consumption of the drive, the drive consumption value being determined using a first sensor; determine a secondary consumer consumption value describing consumption of a secondary consumer, the secondary consumer consumption value being determined using a second sensor; derive a drive prediction value from the drive consumption value, the drive prediction value relating to an electric power consumption prediction for the drive; derive a secondary consumer prediction value from the secondary consumer consumption value, the secondary consumer prediction value relating to an electric power consumption prediction for the secondary consumer, the secondary consumer prediction value being determined separately from the drive prediction value, the drive prediction value and the secondary consumer prediction value being determined with different calculation methods and/or a differently parameterized calculation method; obtain route data describing a route to be traveled by the vehicle; and calculate the residual range as an available travel distance for the motor vehicle on a route determined from the route data, using the drive prediction value and the secondary consumer prediction value, wherein the secondary consumer comprises an air conditioning system, and the secondary consumer prediction value is derived by at least one of; adapting the secondary consumer consumption value to current ambient conditions, and determining an average prior consumption value for the secondary consumer consumption value and adapting the time over which the secondary consumer consumption value is averaged based on residual energy in the energy store. - View Dependent Claims (19)
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Specification