Plug-in hybrid power system

Abstract

The invention discloses a plug-in hybrid power system which is characterized in that an input shaft A (2) and an input shaft B (5) are coaxial and connected through a gear shifting mechanism (4), a drive gear A (3) is fixedly mounted on the input shaft A (2) and meshed with a driven gear A (9) mounted on an output shaft (10), a motor (1) and the output shaft (10) form fixed speed ratio transmission relation, and other power sources can form breakable transmission relation with the output shaft (10) through the input shaft B (5). By the arrangement, two modes of motor driving and hybrid driving by the motor and other power sources can be achieved. The plug-in hybrid power system has the advantages that the motor-engine hybrid power drive function is achieved by using the smallest amount of parts, and the system is good in process inheritance of traditional gearboxes and widely applicable to various power equipment such as cars, railway vehicles, ships, engineering machines and agricultural machines.

Description

technical field [0001] The invention relates to a hybrid electric vehicle power system, especially a hybrid electric vehicle with dual power sources of a motor and an engine, a speed reducer and a transmission with three or more power sources and loads, and can be widely used in automobiles, rail vehicles, ships, Construction machinery, agricultural machinery and other power equipment. Background technique [0002] At present, due to the pressure of energy conservation and emission reduction, vehicle energy conservation and emission reduction standards are becoming increasingly stringent. In order to reduce the energy consumption of vehicles, many new vehicle systems including hybrid vehicles have been developed. As a type of vehicle that has both the long mileage of traditional internal combustion engine vehicles and electric vehicles, which are energy-saving, environmentally friendly, and can use clean electric energy, hybrid vehicles have begun to be widely used. At the...

AI Technical Summary

Problems solved by technology

[0008] Method 1 has high requirements for planetary gear processing and assembly precision, low transmission efficiency, poor inheritance with the existing production process of vehicle transmission system, and requires re-investment in equipment, molds, etc.

[0009] Method 2 adopts bevel gear transmission system, which requires high machining precision of gears and difficult lubrication, etc.

[0010] In mode 3, there are problems such as the speed coordination of the two power sources is fixed, and it is difficult to play the best working curve of each power source.

[0011] Regardless of the above methods, the cost of the powertrain is relatively expensive. How to reduce the number of parts and reduce the cost of the powertrain has become an important issue

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