Dynamic-coupling electric control power gear shift hybrid power system

Abstract

The invention discloses a dynamic-coupling electric control power gear shift hybrid power system and relates to the technical field of automobiles. The system comprises an engine, an integrated starter generator, a main driving motor, a transmission coupling gear shift driving unit and wheels, wherein the engine is connected with the integrated starter generator and is used for outputting power to the integrated starter generator; the integrated starter generator utilizes the power output by the engine to generate electricity; the integrated starter generator starts the engine and outputs power together with the engine; and the engine and the integrated starter transfer coupled driving forces to the wheels by virtue of the transmission coupling gear shift driving unit. The dynamic-coupling electric control power gear shift hybrid power system is compact in structure and efficient in transmission, dispenses with a clutch device, and can be used for realizing the working mode switchover and gear shift without power failure of the hybrid power system.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicles, in particular to a power-coupling electronically controlled power-shift hybrid power system. Background technique [0002] Energy-saving and new energy vehicles have become the development direction of the automobile industry, and plug-in hybrid vehicles, pure electric vehicles, and fuel cell vehicles have become the key core technologies for major automobile manufacturers to vigorously develop. Due to the performance and cost constraints of power batteries and fuel cells, plug-in hybrid technology has become a low-cost, high-performance solution, which is being respected by major manufacturers. Plug-in hybrid electric vehicles are evolved from hybrid electric vehicles, which inherit most of the characteristics of hybrid electric vehicles, but replace the power-type batteries of hybrid electric vehicles Under normal circumstances, the motor is responsible for realizing pure elec...

AI Technical Summary

Problems solved by technology

However, because there is only one gear, it is difficult to take into account the design requirements of over-slope, acceleration performance and maximum electric vehicle speed, and it is difficult for the motor to work in a higher efficiency range under urban conditions.

At the same time, when the battery energy is low and needs to be transferred to the hybrid driving of the engine / motor, due to the limitation of the minimum stable engine speed and torque characteristics of the engine, under many driving conditions such as acceleration, climbing, and low-to-medium The aforementioned series mode participates in the work, which greatly reduces the energy utilization efficiency

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