An electric vehicle mileage estimation system and its estimation method

Abstract

The invention provides an electric vehicle mileage estimation system and its estimation method. The estimation system includes an electric vehicle SOC estimation module, a GPS vehicle positioning and navigation module and a mileage estimation module. The electric vehicle SOC estimation module is composed of the host computer and sensors; the GPS vehicle positioning and navigation module uses the satellite GPS system to locate the car position, searches for the location of the charging pile through the map, and uses the navigation system to plan the car driving route; the mileage estimation module The estimation algorithm is used to calculate whether the electric vehicle can reach the nearest electric vehicle charging pile with the current SOC. The mileage estimation method includes a distance estimation step and a battery SOC estimation step. Through the distance estimation step and the battery SOC estimation step, the present invention realizes the prediction of whether the remaining power of the electric vehicle can reach the charging pile closest to the distance, and prevents the electric vehicle from breaking down in the middle due to insufficient power.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and in particular relates to an electric vehicle mileage estimation system and an estimation method thereof. Background technique [0002] With the popularization of electric vehicles and the improvement of infrastructure such as charging piles, electric vehicles can also run on various complex roads like traditional fuel vehicles. When an electric vehicle is driving on an unknown journey or high speed, the position of the charging pile is unknown when driving on an unknown journey or high speed, and some electric vehicles need to use a specific charging pile, so it is extremely unsafe for an electric vehicle to stop suddenly on the road . Therefore, it is extremely important to be able to reach the nearest charging pile according to the current remaining power. Relying solely on battery SOC is estimated to be difficult to meet the future development of electric vehicles. The remaining power c...

AI Technical Summary

Problems solved by technology

Relying solely on battery SOC estimates is difficult to meet the future development of electric vehicles

The remaining power can only estimate how far the electric vehicle can travel. We don’t know whether it can reach the nearest charging pile. The question of whether the remaining energy of the electric vehicle can reach the nearest charging pile is still blank.

Since electric vehicles are currently in the development stage, they are only equipped with battery SOC estimation modules and navigation modules, but they have not been fully utilized, and the mileage estimation of electric vehicles is not accurate

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