Coaxially arranged transmission structure for extended-range hybrid power system

Abstract

The invention relates to a coaxially arranged transmission structure for an extended-range hybrid power system. The coaxially arranged transmission structure comprises a front box body assembly, a main box body assembly and a rear box body assembly, wherein the main box body assembly and the rear box body assembly are coaxially arranged with the front box body assembly; and the front box body assembly comprises a front box body, a generator stator, a generator rotor, a front cover plate, a front supporting plate, an input gear shaft, a first bearing, a second bearing, a third bearing, a fourthbearing, an input secondary driving gear, an input intermediate shaft, a fifth bearing, an input secondary driven gear, a sixth bearing, a bearing pressing plate and a wave spring. The coaxially arranged transmission structure for the extended-range hybrid power system is high in integration degree and convenient in matching, installing and box closing; by using a parallel shaft type two-stage speed reducing mechanism, the structure is simple and reliable, and the machining cost is low; an engine is coupled with a generator, and a extended-range power generation function is realized; and theengine is decoupled from a driving system, the engine stably works at an efficient power point, higher fuel economy is obtained, and the use cost of a vehicle is lowered.

Description

technical field [0001] The invention belongs to the technical field of hybrid vehicle transmission, and in particular relates to a coaxially arranged transmission structure for a range-extended hybrid system. Background technique [0002] In recent years, with the guidance of national policies and the requirements of vehicle emission regulations, especially under the environment of National VI emission requirements and credit policy environment, various OEMs are vigorously promoting a variety of pure electric vehicles. Plug-in pure electric vehicles have a series of problems such as short cruising range and high battery cost. Therefore, range-extended hybrid vehicles were born under such a background. The range extender is used to generate electricity, which solves the mileage anxiety problem of electric vehicles. [0003] Extended-range hybrid vehicles use electric energy as the direct power source of the vehicle. After the battery power is lower than the SOC (battery rema...

AI Technical Summary

Problems solved by technology

The disadvantage is that the integration is low; the generator and the drive motor lack an effective deceleration device, and a low-speed high-torque motor is used, which is costly; some synthetic boxes on the market have wet clutches and hydraulic valve plates, and the research and development costs are higher

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