Method and device for forecasting the range of a vehicle with an at least partially electric drive

Patent metadata

Field	Value
Publication number	US-2016167643-A1
Application number	US-201514964767-A
Country	US
Kind code	A1
Filing date	Dec 10, 2015
Priority date	Dec 16, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

A method for predicting a range of a vehicle having an at least partially electric drive. When a first operating mode of the vehicle is ended at a time, the vehicle switches into a second operating mode when the first operating mode ends. The range of the vehicle is determined when the first operating mode ends. Starting at the time at which the first operating mode ends, the temporal development of a parameter from the surroundings of the vehicle is determined for a certain duration, wherein the vehicle is in the second operating mode for at least a portion of the certain duration. Also disclosed is a device for predicting a range of a vehicle having an at least partially electric drive.

First claim

1 . A method for predicting a range of a vehicle comprising an at least partially electric drive, the method comprising:
detecting when a first operating mode of the vehicle is ended, wherein the vehicle switches into a second operating mode when the first operating mode ends; determining a range of the vehicle when the first operating mode ends; determining a temporal development of a parameter from vehicle surroundings for a certain duration starting at the first operating mode end time, wherein the vehicle is in the second operating mode for at least a portion of a certain time duration (t); predicting the temporal development of the range for the certain time duration as a function of the range when the first operating mode ends and as a function of the temporal development of the parameter; and outputting the temporal development of the range.

2 . The method of claim 1 , wherein the vehicle is in a driving mode when in the first operating mode and is in a resting mode when in the second operating mode.

3 . The method of claim 1 , further comprising determining a further time, at which the switch from the second operating mode to the first operating mode is likely to take place, and the further time is output.

4 . The method of claim 1 , wherein the parameter includes weather conditions in the surroundings of the vehicle and a weather forecast for the certain duration is determined as the temporal development.

5 . The method of claim 4 , further comprising determining the position of the vehicle in the second operating state and the weather forecast for the position of the vehicle.

6 . The method of claim 1 , further comprising, determining whether an energy accumulator of the vehicle is charged during the second operating mode, and
if the energy accumulator is charged, predicting the temporal development of the state of charge of the energy accumulator taking into account the predicted temporal development of the state of charge in the prediction of the temporal development of the range.

7 . The method of claim 6 , further comprising:
determining a target energy quantity, which the energy accumulator of the vehicle should have at the further time, determining a target time, at which a state of charge for charging the energy accumulator must be started to provide the target energy quantity at the further time, and outputting the target time.

8 . The method of claim 1 , wherein the temporal resolution of the certain duration is dependent upon the temporal resolution of the parameter.

9 . The method of claim 1 , further comprising generating a graphic depiction is generated on a display panel, by which the temporal development of the range is output.

10 . The method of claim 9 , wherein the graphic depiction comprises a diagram, wherein the certain duration is plotted on a first axis and the predicted range is plotted on a second axis, and the predicted range is output by the diagram.

11 . The method of claim 10 , wherein the temporal resolution of the parameter has the unit hours, the certain duration comprises 24 hours, and times of day having an interval of one hour between each of two consecutive times of day is plotted on the first axis.

12 . The method of claim 9 , wherein the graphic diagram has a graphic element for each output time.

13 . The method of claim 12 , wherein at least one of the graphic elements in the diagram is movable along the first axis, so that the time can be set by moving the graphic element.

14 . A device for predicting a range of a vehicle comprising an at least partially electric drive, the device comprising:
a detection unit, by which it is detected when a first operating mode of the vehicle is ended at a time, wherein the vehicle switches into a second operating mode when the first operating mode ends; a determination unit, by which the range of the vehicle can be determined when the first operating mode ends and, starting at the time when the first operating mode ends, the temporal development of a parameter from the surroundings of the vehicle can be determined for a certain duration; a prediction unit, by which the temporal development of the range can be predicted for the certain duration as a function of the range when the first operating mode ends and as a function of the temporal development of the parameter; and an output unit, by which the predicted temporal development of the range can be output.

15 . A vehicle comprising an at least partially electric drive having a device according to claim 14 .

Assignees

• Volkswagen Ag

Inventors

• Tabanoglu Gökhan
• Vujasinovic Mirko

Classifications

• B60W50/0097

  Predicting future conditions · CPC title

• B60W2555/20

  Ambient conditions, e.g. wind or rain · CPC title

• B60L3/12

  Recording operating variables {; Monitoring of operating variables} · CPC title

• B60L1/00

  Supplying electric power to auxiliary equipment of vehicles (circuit arrangements for charging batteries H02J7/00) · CPC title

• G01C21/3469 Primary

  Fuel consumption; Energy use; Emission aspects · CPC title