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

A wheel-side drive and torque distribution technology, applied in the control of drive, vehicle components, electric vehicles, etc., can solve the problems of unguaranteed transmission efficiency, unsuitable multi-axis system, complex control methods, etc., to save power consumption and comfort. Good performance and safety, wear-reducing effect

CN104786804AActive Publication Date: 2015-07-22ZHENGZHOU YUTONG BUS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-07-22

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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.
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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...

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Embodiment Construction

[0045] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0046] Such as figure 1Shown is the overall structural diagram of the vehicle wheel drive system of the present invention. It can be seen from the figure that the system includes a multi-axis wheel drive device and its control unit. The multi-axis wheel drive device includes a steering shaft and m drive shafts. m≥2 (m generally takes 2 or 3, figure 1 In the shown m=2), two steering wheels are installed on the steering shaft, and 2m electric wheels are installed on the drive shaft, and each electric wheel is composed of a corresponding wheel motor, a reducer and a tire; the control unit includes a vehicle The controller and 2m motor controllers, that is, each wheel side motor is connected to a corresponding motor controller through the circuit, and the vehicle controller is connected to each motor controller, and information exchange is performed through the ...