Electric vehicle mileage pre-estimation system and pre-estimation method thereof

Abstract

The invention provides an electric vehicle mileage pre-estimation system and a pre-estimation method thereof. The pre-estimation system comprises an electric vehicle SOC (state of charge) estimation module, a GPS vehicle positioning and navigating module and a mileage pre-estimation module. The electric vehicle SOC estimation module is composed of a host computer and a sensor; the GPS vehicle positioning and navigating module uses a satellite GPS system to locate the position of a vehicle, searches for the position of a charging pile through a map, and uses a navigation system to plan a vehicle driving route; and the mileage pre-estimation module calculates whether the electric vehicle in a current SOC can reach the nearest electric vehicle charging pile or not through a pre-estimation algorithm. The mileage pre-estimation method includes the steps of distance pre-estimation and battery SOC pre-estimation. The prediction of whether the remaining electric quantity of the electric vehicle can make the electric vehicle reach the nearest charging pile or not is realized by the distance pre-estimation step and the battery SOC pre-estimation step in order to prevent the electric vehiclewith insufficient power from stalling halfway.

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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