Multiple axle driving system for oil-electricity mixed power automobile and method for improving turning radius of automobile by using the system

Abstract

The multiple axle driving system for mixed power automobile with fuel oil and electric energy as power source includes at least one mechanical driving axle assembly, at least one electric driving axle assembly, one power source assembly, one general controller, one monitoring and communication network system, and one engine and one multifunctional double-rotor motor to drive different axles separately. The double-rotor motor consists of one outer rotor and one inner rotor, the outer rotor is connected to the hub in one side through the reducing mechanism and the versatile transmission mechanism, and the inner rotor is connected to the hub in the other side through the reducing mechanism and the versatile transmission mechanism. The multiple axle driving system integrates the technology and functions of complete mixed power, multiple axle driving, etc. and makes the automobile possess the advantages of easy realization, low cost, raised running smoothness and stability, etc.

Description

technical field [0001] The invention relates to an automobile drive system, in particular to a dual or multi-axle (shaft) hybrid electric vehicle drive system using fuel and electric energy as energy sources. The invention also relates to a method for improving the turning radius of an automobile by applying the multi-axle drive system. Background technique [0002] At present, various electric vehicles and hybrid vehicles are developing rapidly, and in recent years, the demand for four-wheel-drive cars, off-road vehicles, and SUVs (sports utility vehicles) has increased very rapidly. Dual or multi-axle (axle) four-wheel drive Research on the hybridization of automobiles has also received more and more attention. The existing drive systems of hybrid electric vehicles mainly include: [0003] (1) The split type (THS system of Toyota) based on the two-degree-of-freedom planetary diversion mechanism is designed for the front axle single-axle drive or the rear axle single-axle...

AI Technical Summary

Problems solved by technology

[0003] (1) The split type (THS system of Toyota) based on the two-degree-of-freedom planetary diversion mechanism is designed for the front axle single-axle drive or the rear axle single-axle drive. This is a typical representative, but because of its planetary The characteristic of "variable speed and constant torque" of the mechanism, if no improvement measures are taken, it will be difficult to change the transmission ratio in a large range, and it is only suitable for light hybrid cars with little change in the working load

[0004] (2) The Chinese utility model patent with the application number 02205008.6 adopts a mechanical switch working mode similar to a gear box. The fast, smooth and frequent switching between different working modes is only suitable for the primary control strategy of simple mode switching corresponding to a small number of given typical working conditions, which is not conducive to the adoption of advanced optimal control strategies on the powertrain to achieve ultra-low emissions and improve energy efficiency. Vehicle performance optimization goals such as fuel economy and power performance

[0005] (3) The Chinese utility model patent No. 02266310.X adopts the independent suspension motor drive axle modular structure. Although this model can better achieve the optimization goals under various complex operating conditions, the structure is complex and The increase of unsprung (non-suspended) mass increases the impact load on the suspension, the vibration amplitude of the body and the probability of the wheels jumping off the ground during driving, which reduces the ride comfort and stability

[0006] Moreover, traditional hybrid structures are seldom developed independently for four-wheel drive vehicles. Some use the existing hybrid structure and install a transfer case, and some install a motor on the basis of the traditional vehicle's inherent differential to drive a transmission independently. axis

This kind of design not only can't make better use of the economic and energy-saving potential of hybrid technology, but also can hardly avoid the disadvantages of traditional differential structure

Images