Vehicle and wheel edge drive system and wheel edge drive torque distributing method thereof

Abstract

The invention relates to a vehicle and a wheel edge drive system and a wheel edge drive torque distributing method thereof. The number of drive shafts of the drive system is no less than two, vehicle internal space can be arranged more reasonably, the better dynamic property can be obtained, and the passenger carrying capacity and the climbing property are enhanced compared with those of a bus driven by a single motor; torque of the drive shafts can be distributed flexibly according to power needed by the vehicle, the high efficiency of the wheel edge drive system is obtained, and the power consumption of a power battery is saved to the greatest degree; the torque distribution between the shafts, the steering differential and other control modules are combined together to form a control method suitable for the multi-rear-shaft wheel edge drive system, energy optimization of the drive system and the functions of the advanced automobile electronic control systems such as an ASR, an ESP and an EBS can be achieved, and the whole vehicle can obtain a good balance in the aspects of the dynamic property, economy, comfort, safety and the like.

Description

technical field [0001] The invention relates to a vehicle, its wheel drive system and a wheel drive torque distribution method, and belongs to the field of electric vehicles. Background technique [0002] With the rapid increase of car ownership, the energy shortage and air pollution brought by cars to the earth are becoming more and more serious. New energy vehicles, especially pure electric vehicles, have become the direction of active research and development by major manufacturers. As a driving method of pure electric structure, wheel drive has many advantages such as short power transmission route and flexible layout. [0003] Among the existing electric vehicle configuration schemes, the scheme of directly integrating the motor with the wheel or the drive scheme of the wheel-side motor is the most conducive to improving the performance of the vehicle, and the drive technology of the wheel-side motor is a key to improving the performance of electric vehicles Technology...

AI Technical Summary

Problems solved by technology

This solution can timely adjust the slip ratio, motor state and torque distribution according to the vehicle's driving state, vehicle speed at different times and driver's intention, but its disadvantage is that the used motor torque distribution method is mainly for the hub motor of each independent wheel Torque distribution is not suitable for multi-axis systems, and the transmission efficiency is not guaranteed, and its control method is relatively complicated, which is not conducive to practical application

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