Electric four-wheel drive hybrid power system

Abstract

The invention discloses an electric four-wheel drive hybrid power system which comprises a power battery, a front driving unit and a rear driving unit, wherein the front driving unit comprises an engine and an ISG motor, and further comprises a CVT transmission; the ISG motor is connected with the engine through a clutch C1; the ISG motor is connected with the CVT transmission through a clutch C2; the clutch C1 is used for controlling the separation and combination of the ISG motor and the engine; the clutch C2 is used for controlling the separation and combination of the ISG motor and CVT transmission. The hybrid power system adopting the front driving unit, the double clutches and the CVT transmission to form power coupling has the advantages that the working modes such as independent working of the ISG motor, and parallel connection work of the engine and the ISG motor are realized by controlling the clutches; the working modes of pure electric mode, parallel connection driving mode, running power generation mode, series connection power generation mode and four-wheel driving mode can be realized by controlling the work of a rear driving motor; the fuel economy and emission performance are higher.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicles, in particular, the invention relates to an electric four-wheel drive hybrid power system. Background technique [0002] With the progress of society, people's awareness of environmental protection has increased, and the "low-carbon, environmentally friendly, green" travel mode has gradually attracted great attention. High-efficiency, environment-friendly and energy-saving hybrid electric vehicles have attracted great attention from various automobile manufacturers in the world. [0003] With the further aggravation of energy crisis and environmental deterioration, energy saving and environmental protection have become the themes of modern automobile development. Although traditional four-wheel drive vehicles have better power and off-road performance than conventional two-wheel drive vehicles, their fuel consumption and emissions are relatively high, which can no longer meet the...

AI Technical Summary

Problems solved by technology

Although traditional four-wheel drive vehicles have better power and off-road performance than conventional two-wheel drive vehicles, their fuel consumption and emissions are relatively high, which can no longer meet the development requirements of modern automobiles for energy saving and emission reduction. Therefore, major automobile manufacturers have begun to compete. Relatively develop four-wheel drive hybrid vehicles with good fuel economy and emissions to replace traditional four-wheel drive vehicles

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