System for improving endurance mileages of electric vehicle

Abstract

The invention provides a system for improving endurance mileages of an electric vehicle. The system is applied to the electric vehicle. The system for improving the endurance mileages of the electricvehicle comprises a battery set, a motor, a motor controller and a vehicle controller; the battery set provides electric energy for the motor; the motor converts the electric energy provided by the battery set into kinetic energy to drive the electric vehicle; the motor controller is used for controlling the motor; the vehicle controller is used for collecting the rotation speed of the motor, input current of the motor, input voltage of the motor, output current of the motor and output voltage of the motor; the vehicle controller obtains the speed of the electric vehicle through calculation according to the rotation speed of the motor and calculates the efficiency of the motor according to the input current of the motor, the input voltage of the motor, the output current of the motor and the output voltage of the motor. According to the system for improving the endurance mileages of the electric vehicle, by optimizing the motor and adding a gear, optimization of the electric vehicle isachieved, so that the electric vehicle runs with the optimal energy, and then the endurance mileages of the electric vehicle are improved.

Description

【Technical field】 [0001] The invention relates to the technical field of electric vehicles, in particular to a system for improving the cruising range of electric vehicles. 【Background technique】 [0002] Compared with traditional fuel vehicles, the constraints of new energy vehicles are largely due to the difference in cruising range, which makes new energy vehicles limited to short-distance use and cannot be promoted. Therefore, for pure electric vehicles, how to improve their cruising range has become an urgent problem to be solved. The existing solution is usually to increase the braking energy feedback to improve the cruising range, but it does not fundamentally solve the problem, the reasons are as follows: [0003] 1. The effect of improving the cruising range is not obvious. Due to the limitation of the maximum speed of electric vehicles, the cruising range of electric special vehicles can generally be increased by 5%, and the cruising range of electric passenger ve...

AI Technical Summary

Problems solved by technology

[0003] 1. The effect of improving the cruising range is not obvious. Due to the limitation of the maximum speed of electric vehicles, the cruising range of electric special vehicles can generally be increased by 5%, and the cruising range of electric passenger vehicles can be increased by 10% to 25%;

[0004] 2. Excessive braking energy feedback will lead to poor vehicle comfort and inaccurate SOC estimation;

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