Series-parallel hybrid power tractor power system and control method thereof

Abstract

The invention relates to a series-parallel hybrid power tractor power system and a control method of the power system. The power system comprises an engine, a first motor, a second motor and a planetary gear mechanism. The planetary gear mechanism is provided with three connecting ends for inputting and outputting power; an output shaft of the engine is connected with the first motor; an output shaft of the first motor is connected with the first connecting end of the planetary gear mechanism; the second motor is connected with the second connecting end of the planetary gear mechanism; the third connecting end of the planetary gear mechanism is used for being connected with a driving axle; the first connecting end and the third connecting end are coaxial. The driving system is unique in power configuration, and according to the control method, the working state is determined by detecting running parameters of a tractor; according to the working state, the driving system is controlled, and the series-parallel hybrid power tractor power system meets various working mode requirements of a hybrid power tractor

Description

technical field [0001] The invention relates to a power system of a parallel hybrid tractor and a control method thereof. Background technique [0002] At present, the number of traditional tractors is increasing, and the air pollution and oil consumption caused by them are becoming more and more serious. They have become an important part of environmental pollution and energy consumption, and should be paid enough attention to; Due to the speed requirements, different operating modes of tractors have higher requirements on traction force and traction power; hybrid technology is becoming more and more common and mature in the application of automobiles. Due to its own advantages of energy saving and environmental protection, hybrid power can be researched and applied to tractors , but automotive hybrid system technology is not suitable for tractor power systems, it is necessary to design a hybrid technology suitable for tractor working conditions; The advantages of the powe...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hybrid tractor power system and its control method, which can achieve good fuel economy of the tractor while satisfying the traction force, traction power and traction speed required by various operating conditions of the tractor It is suitable for solving the problem that the existing tractor power system is not suitable for the requirements of various operation modes of hybrid tractors

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