Hybrid power system using dual planetary line configuration

Abstract

The invention provides a hybrid power system using a dual planetary line configuration. The hybrid power system includes a power coupling device, an engine, a power generator, a main drive motor, a power battery, a first motor controller, a second motor controller, and an output shaft; the power coupling device includes a front line planetary gear mechanism, a back line planetary gear mechanism, afirst mode clutch, and a second mode clutch. Separation and combination of the two mode clutches can achieve one pure electric mode and two hybrid power modes, and the problem that the original planetary line systems are low in pure electric efficiency through the front line planetary gear mechanism and the back line planetary gear mechanism; the problem that the original planetary line systems are poor in climbing performance can be solved through dual-mode switching; and the problem that the system efficiency is lowered due to reverse rotation of the power generator while the original planetary line hybrid power systems runs at a high speed can be solved through dual-mode switching.

Description

technical field [0001] The invention relates to a hybrid power system, in particular to a hybrid power system using a dual planetary row configuration. Background technique [0002] With the increasingly serious energy and environmental problems, the country vigorously develops new energy vehicles. At present, domestic mainstream hybrid power adopts a dual-motor coaxial hybrid structure, but the system generally has the problem of insufficient power; the parallel system is because the AMT transmission technology is not yet mature, and the power interruption is obvious during shifting, and the driving comfort of the vehicle is poor. Promotion It seems that there is a big problem. Although the design of the traditional double-row planetary gear structure can solve some problems of climbing and smoothness of mode switching, since the engine torque is directly output to the rear planetary carrier after being shunted by the ring gear, there is still the problem of insufficient p...

AI Technical Summary

Problems solved by technology

At present, domestic mainstream hybrid power adopts a dual-motor coaxial hybrid structure, but the system generally has the problem of insufficient power; the parallel system is because the AMT transmission technology is not yet mature, and the power interruption is obvious during shifting, and the driving comfort of the vehicle is poor. Promotion It seems that there is a big problem

Although the design of the traditional double-row planetary gear structure can solve some problems of climbing and smoothness of mode switching, since the engine torque is directly output to the rear planetary carrier after being shunted by the ring gear, there is still the problem of insufficient power, especially in remote This problem is still prominent in mountainous areas, and it will cause the generator to reverse prematurely to form a power cycle, resulting in poor system efficiency

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