Novel hybrid power system and driving method thereof

Abstract

A novel hybrid power system comprises an engine and wheels, and further comprises a shaft coupling, a first motor, a second motor, a first clutch, a second clutch, a first epicyclic gear train, a second epicyclic gear train, a first brake and a second brake. The designed hybrid power system Utilizes respective characteristics of an engine and the motors, a vehicle with optimal performances and oilconsumption is achieved through three-stage planetary gear speed change, the structure is simple, a gearbox and the motors are modular, double motors and three planet rows are achieved, stable torquechange can be achieved through different combinations of two clutches and two brakes, the change range is wide, and adaptability is high.

Description

technical field [0001] The invention belongs to the field of hybrid power system development, and in particular relates to a novel hybrid power system and a driving method thereof. Background technique [0002] At present, vehicle emissions and energy consumption have become a worldwide problem. As the environmental protection measures of countries around the world become more and more stringent, there are more and more alternatives to fuel engine vehicles, such as hydrogen energy vehicles, fuel cell vehicles, and hybrid vehicles. etc.; at present, only hybrid electric vehicles are the most practical and commercially operated models. Hybrid electric vehicles with low emission and low energy consumption have become one of the mainstreams in the development of the current automobile industry. The key to hybrid electric vehicles is the hybrid power system, and its performance is directly related to the overall performance of hybrid electric vehicles. [0003] Hybrid power mean...

AI Technical Summary

Problems solved by technology

[0004] After more than ten years of development, the hybrid system assembly has developed from the original discrete structure of the engine and motor to the integrated and modular structure of the engine, motor and gearbox; if a three-stage planetary row is considered, the torque range is wide, but the structure is too large Complicated and large in size, it is not suitable for low-cost special-purpose vehicles, and the traditional two-stage planetary row hybrid system is not suitable for special-purpose vehicles with complex operating conditions because the power will be interrupted due to gear shifting

In short, some of the existing hybrid systems have too complex structures, some have low fuel economy ratios, some have small torque range coverage, and some shift power will be interrupted, which cannot fully meet the needs of special markets.

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