Method and device for estimating remaining mileage of vehicle with power supply system

Abstract

The invention relates to a method and device for estimating the remaining mileage of a transportation vehicle with a power supply system. The method comprises the steps that energy consumption values,vehicle speeds and accelerated speeds under all driving conditions are obtained; the energy consumption value per second under the corresponding driving conditions is calculated according to the energy consumption values, the vehicle speeds and the accelerated speeds; the current driving condition of the vehicle is identified, the remaining energy value of a battery is obtained, and the remainingmileage is calculated according to the remaining energy value of the battery and the energy consumption value per second under the current driving condition. According to the method and device for estimating the remaining mileage of the transportation vehicle with the power supply system, the remaining mileage is estimated by calculating the energy consumption value per second under all the driving conditions, the mileage estimating precision is improved, a reasonable traveling route is chosen for a driver, the guarantee is provided for charging of the transportation vehicle with the power supply system in time, mileage anxiety is relieved, and thus the user experience is improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle control, in particular to a method and device for estimating the remaining mileage of a vehicle with a power supply system. Background technique [0002] The mileage of a vehicle with a power supply system refers to the mileage traveled by the vehicle with a power supply system from the state when the power battery is fully charged to the end of the test specified in the standard. The remaining mileage refers to the mileage that the car can still drive under the current situation while maintaining the current driving mode. Since electric vehicles cannot achieve fast charging, the accuracy of the calculation of the remaining mileage of vehicles with power supply systems is particularly important. The estimation of the remaining mileage can provide judgment for the driver to make a decision on the driving route, charge the vehicle in time, and solve the problem of mileage anxiety. [0003]...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it requires a large amount of work to test and count the current values ​​of various working conditions at different speeds, and the working conditions of the vehicle are complex. Only the current value is used to map the energy consumption per kilometer, and the remaining energy is used to Divided by the energy consumption per kilometer, the accuracy of the remaining mileage is low

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