Estimating method for residual traveling mileage of pure electric vehicle based on T-Box

Abstract

The invention relates to an estimating method for residual traveling mileage of a pure electric vehicle based on a T-Box. The estimating method comprises the following steps: uploading current vehiclestate information to a network platform by the T-box; inquiring whether historical energy consumption information is shared or not on a current road section by the network platform, finding and taking historical energy consumption datum E platform energy consumption if the historical energy consumption information is shared on the current road section, otherwise, recording the historical energy consumption datum as 0; calculating residual energy at current moment; calculating average energy consumption E average energy consumption of each time quantum in a travelling process; calculating a difference value between the E platform energy consumption and the E average energy consumption; if the difference value is greater than 0 and is smaller than a calibrated threshold value, indicating that unit reference energy consumption E energy consumption is equal to E platform energy consumption, otherwise, indicating that unit reference energy consumption E energy consumption is equal to E average energy consumption; and calculating the residual travelling mileage, specifically, Sresidual is equal to Eresidual/Eenergy consumption. The estimating method is high in accuracy and reliability of residual travelling mileage calculation, can provide reliable reference to a driver, avoids blind charging, reduces charging frequency, and prolongs the service life of a 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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