Method for determining the remaining range of a motor vehicle, and motor vehicle

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:

• determining a drive consumption value, the drive consumption value being indicative of past electric power consumption of the drive;
• determining 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;
• deriving a plurality of drive prediction values from the drive consumption value, each drive prediction value being assigned to a predetermined distance of a route previously travelled;
• deriving 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 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;
• obtaining route data describing a route to be traveled by the vehicle;
• matching the route to be travelled with the route previously travelled to select at least one selected drive prediction value;
• calculating the residual range for a distance to be traveled by the motor vehicle, according to route data, using the at least one selected drive prediction value and the secondary consumer prediction value;
• and
• updating the drive prediction value and the secondary consumer prediction value based on current consumption of the drive and the secondary consumer during the distance traveled by the motor vehicle.

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:

• 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;
• deriving 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 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;
• and
• 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.

A motor vehicle, comprising:

• 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;
• 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 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.