Series-parallel hybrid system and vehicle working mode decision method

Abstract

The invention provides a series-parallel hybrid system and a vehicle working mode decision method. The series-parallel hybrid system comprises a traditional power device and a motor driving device; the traditional power device and the motor driving device can be respectively coupled to driving axles of a vehicle to drive wheels to rotate; and the traditional power device comprises a first engine,wherein the series-parallel hybrid system further comprises a power battery device and a vehicle-mounted power generation device, wherein the power battery device is arranged to store electric power and supply power to the motor driving device and / or other vehicle electric appliance loads; the vehicle-mounted power generation device comprises a second engine and a power generator; and the second engine is arranged to drive the power generator to generate power and can supply power to any one or combinations of the motor driving device, the power battery device and other vehicle electric appliance loads. According to the series-parallel hybrid system, the mechanical structure is comparatively simple; and problems of range anxiety, lower conversion efficiency under high speed condition, toocomplicated automobile system and so on can be simultaneously solved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a series hybrid power system and a vehicle working mode decision-making method. Background technique [0002] In recent years, with the development of productivity and the growth of demand for automobiles, people's demand for energy, especially the energy for vehicles, is increasing. At the same time, environmental problems have become increasingly prominent. Energy and the environment are becoming a important factor in development. [0003] Electric vehicles are considered to be the most potential new energy vehicles to solve the energy crisis and environmental pollution. Pure electric or fuel cell vehicles, as the ultimate goal of the new energy vehicle industry, still need to overcome many technical problems and break through multiple technical bottlenecks, and charge or The supporting facilities for refueling still need to be further improved. In addition, pure electric ve...

AI Technical Summary

Problems solved by technology

However, the hybrid architecture of traditional hybrid electric vehicles is a single-engine hybrid architecture. Not only is the conversion efficiency of the vehicle low under high-speed conditions, but the mechanical structure of the hybrid electric vehicle system is too complicated and difficult to control.

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