Driving assistant method and system for electric vehicle
First Claim
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1. A driving assistant method for an electric vehicle, comprising:
- when the electric vehicle is started up, calculating and displaying a battery energy safe driving region of the electric vehicle according to driving information of the electric vehicle, wherein the driving information comprises battery information of the electric vehicle; and
dynamically updating the battery energy safe driving region according to the driving information of the electric vehicle, wherein a method of defining the battery energy safe driving region comprises;
selecting at least one electricity supplying station;
calculating energy consumption per unit distance of the electric vehicle and taking the at least one electricity supplying station as a center to calculate a region that the electric vehicle is capable of returning back to the at least one electricity supplying station under a current battery energy according to the energy consumption per unit distance of the electric vehicle to serve as at least one safe coverage region; and
uniting the safe coverage regions with each other to obtain a united region to serve as the battery energy safe driving region when an amount of the at least one safe coverage region is larger than one,wherein the energy consumption P′
per unit distance of the electric vehicle is obtained according to an equation P′
=P/ki,wherein P is energy consumption per unit distance obtained according to data of original equipment manufacturer of the electric vehicle, ki is a vehicle status-related electricity consumption coefficient.
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Abstract
A driving assistant method for an electric vehicle is provided with the following steps. When the electric vehicle is started up, a battery energy safe driving region is calculated and displayed. The battery energy safe driving region is updated dynamically according to vehicle information. The vehicle information includes battery information of the electric vehicle.
15 Citations
32 Claims
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1. A driving assistant method for an electric vehicle, comprising:
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when the electric vehicle is started up, calculating and displaying a battery energy safe driving region of the electric vehicle according to driving information of the electric vehicle, wherein the driving information comprises battery information of the electric vehicle; and dynamically updating the battery energy safe driving region according to the driving information of the electric vehicle, wherein a method of defining the battery energy safe driving region comprises; selecting at least one electricity supplying station; calculating energy consumption per unit distance of the electric vehicle and taking the at least one electricity supplying station as a center to calculate a region that the electric vehicle is capable of returning back to the at least one electricity supplying station under a current battery energy according to the energy consumption per unit distance of the electric vehicle to serve as at least one safe coverage region; and uniting the safe coverage regions with each other to obtain a united region to serve as the battery energy safe driving region when an amount of the at least one safe coverage region is larger than one, wherein the energy consumption P′
per unit distance of the electric vehicle is obtained according to an equation P′
=P/ki,wherein P is energy consumption per unit distance obtained according to data of original equipment manufacturer of the electric vehicle, ki is a vehicle status-related electricity consumption coefficient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A driving assistant method for an electric vehicle, comprising:
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a electricity supplying station selecting step, for setting a selection region comprising at least one electricity supplying station for the electric vehicle, and finding the at least one electricity supplying station within the selection region; a coverage region calculating step, for calculating energy consumption per unit distance of the electric vehicle according to driving information of the electric vehicle, and taking the at least one electricity supplying station as a center to estimate a region that the electric vehicle is capable of returning back along different directions under a current battery energy according to the energy consumption per unit distance of the electric vehicle to serve as at least one safe coverage region, and estimate a region capable of being reached by the electric vehicle to serve as at least one warning coverage region, and uniting the safe coverage regions with each other to obtain a battery energy safe driving region when an amount of the at least one safe coverage region is larger than one, and uniting the warning coverage regions with each other to obtain a battery energy warning driving region when an amount of the at least one warning coverage region is larger than one; a dynamic updating step, for dynamically updating the battery energy safe driving region and the battery energy warning driving region according to the driving information; and a display step, for displaying the updated battery energy safe driving region, and the updated battery energy warning driving region, wherein the energy consumption P′
per unit distance of the electric vehicle is obtained according to an equation P′
=P/ki,wherein P is energy consumption per unit distance obtained according to data of original equipment manufacturer of the electric vehicle, ki is a vehicle status-related electricity consumption coefficient. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A driving assistant system for an electric vehicle, comprising:
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a driving information collecting unit, for receiving driving information through at least one sensor installed in the electric vehicle, wherein the driving information comprises at least one of battery information, positioning information, map information and traffic information of the electric vehicle; an input unit, for receiving trip related information, wherein the trip related information comprises a first pre-proposed selection region; a selection region calculating unit, connected to the driving information collecting unit and the input unit, for receiving the first pre-proposed selection region or calculating a second pre-proposed selection region according to the driving information as a selection region, and finding at least one electricity supplying station within the selection region; a coverage region calculating unit, connected to the driving information collecting unit, the input unit and the selection region calculating unit, for calculating energy consumption per unit distance of the electric vehicle and taking the at least one electricity supplying station as a center to calculate a region that the electric vehicle is capable of returning back to the at least one electricity supplying station under current battery energy of the electric vehicle according to the energy consumption per unit distance of the electric vehicle to serve as at least one safe coverage region, and calculate a maximum region capable of being reached by the electric vehicle to serve as at least one warning coverage region, and uniting the safe coverage regions with each other to obtain a battery energy safe driving region of the electric vehicle when an amount of the at least one safe coverage region is larger than one, and uniting the warning coverage regions with each other to obtain a battery energy warning driving region of the electric vehicle when an amount of the at least one warning coverage region is larger than one, wherein the energy consumption P′
per unit distance of the electric vehicle is obtained according to an equation P′
=P/ki, P is energy consumption per unit distance obtained according to data of original equipment manufacturer of the electric vehicle, and ki is a vehicle status-related electricity consumption coefficient; anda display device, connected to the driving information collecting unit, the input unit and the coverage region calculating unit, for displaying the battery energy safe driving region and the battery energy warning driving region. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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Specification