A method for estimating the remaining mileage of pure electric vehicles based on t-box

Abstract

The invention relates to a method for estimating the remaining mileage of a pure electric vehicle based on T-Box, comprising: T-Box uploads current vehicle status information to a network platform; the network platform inquires whether the current road section has been shared with historical energy consumption information, if shared , then find and call the historical energy consumption information data E 平台能耗 , otherwise record it as 0; calculate the remaining energy at the current moment; calculate the average energy consumption E of each time period during driving 平均能耗 ; Calculate E 平台能耗 with E 平均能耗 The difference; if the difference is greater than 0 and less than the calibration threshold, the unit reference energy consumption E 能耗 equal to E 平台能耗 ; Otherwise, the unit reference energy consumption E 能耗 equal to E 平均能耗 ;Calculate remaining mileage S 剩余 =E 剩余 / E 能耗 . The present invention has high accuracy and reliability for calculating the remaining mileage, can provide reliable reference for the driver, avoids blind charging, reduces charging times, and prolongs the service life of the power battery.

Description

technical field [0001] The invention belongs to the technical field of vehicle engineering, and in particular relates to a method for estimating the remaining mileage of a T-Box pure electric vehicle. Background technique [0002] A pure electric vehicle refers to a vehicle that is powered by a vehicle-mounted power supply, drives the wheels with a motor, and meets the requirements of road traffic and safety regulations. Due to its smaller impact on the environment than traditional cars, its prospects are widely optimistic. However, the mileage of pure electric vehicles is short and needs to be charged in time. Today, when the popularity of charging piles has not reached the same level as that of gas stations, it is extremely inconvenient to charge pure electric vehicles. The mileage of pure electric vehicles is particularly important. The remaining mileage calculation is also particularly important. [0003] In the prior art, some pure electric vehicles do not have the fu...

AI Technical Summary

Problems solved by technology

This causes the driver to be very anxious when driving, not knowing when the vehicle will run out of power and stop driving, so he can only charge blindly and continuously

Even if some pure electric vehicles have the function of estimating the remaining mileage, they basically estimate the remaining mileage based on the energy consumption from full charge to the current moment. The accuracy and reliability are very low, and it is easy to mislead the driver and cause the driver Misjudgment of the remaining mileage, charging too frequently or running out of power halfway and unable to drive

[0004] To sum up, there are the following shortcomings in today’s estimation of the remaining mileage of pure electric vehicles: 1) Some vehicles do not have the function of estimating the remaining mileage at all; 2) Some electric vehicles estimate the remaining mileage based on the energy consumption from full charge to the current moment, which is accurate Very low performance and reliability, it is easy to mislead the driver and cause a lot of inconvenience

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