Three-motor range-extending system

Abstract

The invention provides a three-motor range-extending system, comprising: an internal combustion engine, a range-extending control unit, a first planetary gear mechanism, a first brake, a first generator, a second brake, a second clutch, a second generator, and a second Two planetary gear mechanisms, peripheral power take-off gear, first clutch, peripheral power take-off interface, high-pressure air pump, third clutch, third generator, power steering oil pump, oil pump power take-off gear. Utilizing the mechanical coupling relationship of the planetary gear train and the principle of power splitting, two sets of planetary gear trains and three sets of generators are used to dynamically adjust the working status of the internal combustion engine and the three sets of generators to achieve high-efficiency working areas under different power requirements of the power generation system. Greatly extended effect. At the same time, according to the torque coupling relationship between the generator and the connected equipment, the torque balance principle of the planetary gear train is borrowed, and the torque balance compensation principle of the generator is used to realize the power generation while driving the connected equipment (air pump, oil pump, peripherals) to work. The range-extending control unit is used to logically control the internal combustion engine, generator, brake and clutch to achieve the control and coordination of system components and the realization of the performance of the entire system.

Description

technical field [0001] The invention relates to the technical field of a new energy vehicle internal combustion engine range extension system, in particular to a three-motor range extension system. Background technique [0002] The current status of the internal combustion engine range extension system is: the basic structure of one internal combustion engine driving a generator to work, the power of the power generation system is directly and linearly determined by the power generation capacity and the load demand, the high efficiency area of ​​the internal combustion engine range extension system is limited and it is not easy to adjust dynamically. Especially under the condition of low power continuous demand, the power generation efficiency is not high, which affects the economy; in addition, the extended-range vehicles (especially large commercial vehicles or work equipment vehicles, etc.) have driving assistance systems (electric air pump, electric power steering oil pum...

AI Technical Summary

Problems solved by technology

[0002] The current status of the internal combustion engine range-extending system is: the basic structure of an internal combustion engine driving a generator to work, the power of the power generation system is directly and linearly determined by the power generation capacity and load demand, the high-efficiency area of ​​the internal combustion engine range-extending system is limited and it is not convenient for dynamic adjustment. Especially under the condition of low power and continuous demand, the power generation efficiency is not high, which affects the economy; in addition, the range-extended vehicles (especially large commercial vehicles or operating equipment vehicles, etc.) have driving assistance systems (electric air pumps, electric power steering oil pumps, etc.) ), there are other possible operating power requirements (hydraulic lifting system, hydraulic operating equipment, etc.). In addition to the large number of parts matching parts, cumbersome space layout, and many energy transmission paths, the cost pressure of too many parts loading also larger

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