Electric vehicle

Abstract

The invention provides an electric vehicle, which belongs to the technical field of transportation and solves the problem that an existing electric vehicle runs unstably and completely loses power if a motor fails. The electric vehicle comprises a frame and a vehicle controller, two front wheels are positioned at the front end of the frame, two rear wheels are positioned at the rear end of the frame, a power battery system and two driving motors are fixed into the frame, one of the driving motors is mechanically connected with the two front wheels by speed change structures, the other driving motor is mechanically connected with the two rear wheels by speed change structures, both of the two driving motors are electrically connected with the power battery system by motor controllers, and both of the two motor controllers are electrically connected with the vehicle controller. The front wheels and the rear wheels of the electric vehicle are independently driven and can be independently controlled, accordingly, a front-wheel-drive mode, a rear-wheel-drive mode and a four-wheel drive mode can be actuated according to a control strategy in the vehicle controller, the vehicle meets requirements of different road conditions, and the systematic efficiency is optimized.

Description

Technical field [0001] The invention belongs to the technical field of transportation tools, and relates to a vehicle, particularly an electric automobile. Background technique [0002] With the rapid development of the world economy and the importance of environmental protection awareness, the penetration rate of automobiles has become higher and higher, and the requirements for automobile exhaust emissions have also become higher. Energy-saving and low-emission hybrid electric vehicles and energy-saving, pollution-free ideal "zero-emission" pure electric vehicles are the future development trends. [0003] An electric vehicle refers to a vehicle that is powered by an on-board power supply and driven by a motor to drive wheels and meets the requirements of road traffic and safety regulations. The composition of electric vehicles includes: energy storage device, electric drive and control system, driving force transmission and other mechanical systems. As early as 1873 in the sec...

AI Technical Summary

Problems solved by technology

Although the electric vehicle solves the problem of short mileage due to the low storage energy of the power battery by setting up a range-extending system, it still has many defects.

For example, the electric vehicle only drives the front wheels through the drive motor, and the drive mode is single. Driving on uphill roads, ice, snow, and slippery roads will increase power consumption, resulting in shortened mileage; at the same time, it may also cause problems such as vehicle instability.

The use of single motor drive also has the problem that if the motor fails, the vehicle will completely lose power, causing the vehicle to break down

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