Four-wheel drive electric vehicle with electronic differential

Abstract

The invention relates to a four-wheel drive electric vehicle with an electronic differential. The four-wheel drive electric vehicle comprises the electronic differential, four wheel independent drivemotors, four motor controllers and one accelerator pedal, wherein the electronic differential comprises a steering rod angle recognizer and a signal controller. The steering rod angle recognizer is connected with the signal controller. The accelerator pedal is in signal connection with the signal controller in two ways, the signal controller is connected with the four motor controllers in four ways, and the four motor controllers are respectively connected with the four independent drive motors. According to the four-wheel drive electric vehicle with the electronic differential, the functionsof a mechanical gear differential and a transmission shaft are replaced by the electronic differential and the four wheel independent drive motors. The structure of the whole vehicle is simplified, the energy loss and noise caused by the friction of a mechanical gear are reduced, the positioning and control of the four wheels are accurate, and the safety and stability of the vehicle passing on iceand snow and muddy road surfaces are enhanced. In the driving process, any switching in three modes of front drive, rear drive and four-wheel drive can be realized, and great driving fun is achieved.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a driving structure of an electric vehicle, in particular to an electronic differential and a structure driven by four-wheel independent motors. Background technique [0002] As a new energy vehicle to replace traditional fuel vehicles, electric vehicles are already a demand to solve the energy crisis and environmental pollution, and more and more people are choosing them as a means of transportation. Pure electric vehicles have no engine, only batteries, motors, controllers, transmission shafts, gear differentials and other large parts. Therefore, compared with fuel vehicles, they have the advantages of simple structure, light weight, and low failure rate. Electric vehicles also have the advantages of environmental protection: no toxic gas will be discharged to pollute the air, energy saving, money saving, etc., so they are very popular among people. [0003] The existing elect...

AI Technical Summary

Problems solved by technology

[0003] The existing electric vehicle technology is still equipped with a traditional transmission shaft and a mechanical gear differential to drive the wheels. The problem is that when the center motor drives the wheels through the transmission shaft differential, due to the need for mechanical gear transmission torque, there is a part of the power. It will be lost in mechanical transmission friction, reducing the total mileage of the battery, and the gear transmission has slow response speed, loud noise, easy to wear and other disadvantages! It is relatively difficult to design a four-wheel drive structure for an electric vehicle with a mechanical gear differential, and it cannot run at high speed when fully four-wheel drive

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