Multi-power two-speed coupled speed variator

Abstract

The invention provides a multi-power two-speed coupled speed variator. The multi-power two-speed coupled speed variator comprises a gear ring (203), a planet carrier (204) and a sun gear assembly arranged in the radial direction from outside to inside and engaged in sequence, the gear ring is provided with an internal tooth and an external tooth, the internal tooth is engaged with a planet wheel, the external tooth is engaged with a normally engaged gear (107), one end of a second input shaft is supported by the gear ring in a rotary mode, the other end of the second input shaft is connected with an engine (7) through a clutch device (8), the planet carrier is fixedly connected with the second input shaft, and the sun gear assembly comprises a sun gear (202) and a generator drive wheel (206) disposed integrally with the sun gear; one end of a third input shaft (301) is connected with a generator (6) through a brake B (9), and a generator driven wheel (302) engaged with the generator drive wheel is fixedly arranged on the third input shaft; and according to the multi-power two-speed coupled speed variator, multi-power coupling based on the large torque and the high rotation speed can be realized, the working mode is flexible and diverse, the structure is simple, the transmission efficiency is high, and the stability is good.

Description

technical field [0001] The invention relates to the technical field of gasoline-electric hybrid vehicles, in particular to a multi-power two-speed coupling transmission device for hybrid vehicles. Background technique [0002] After years of development, the oil-electric hybrid power coupling system has developed from the original discrete structure of the engine and the motor to the modular integration of the engine, the motor and the transmission. The typical one in the existing technology is similar to the Toyota THS (Toyota Hybrid System). For example, a hybrid power transmission device disclosed in Chinese Patent No. 201610410620.1 is characterized by a power transmission structure of "shaft center shaft" (that is, a solid shaft is set in the hollow shaft). On the other hand, the solid shaft is difficult to withstand high torque due to its small diameter. With the trend of miniaturization, high torque and high speed of the motor, the disadvantages of this "shaft-in-shaf...

AI Technical Summary

Problems solved by technology

[0002] After years of development, the gasoline-electric hybrid coupling system has developed from the original discrete structure of the engine and electric motor to the modular integration of the engine, electric motor and transmission. The typical one in the existing technology is similar to Toyota THS (Toyota Hybrid System) For example, a hybrid power transmission device disclosed in Chinese patent 201610410620.1, its notable feature is the power transmission structure of the "shaft center shaft" (that is, a solid shaft is set inside the hollow shaft). On the other hand, the solid shaft is difficult to withstand high torque due to its small diameter. With the trend of motor miniaturization, high torque, and high speed, the disadvantages of this "shaft-in-shaft" power transmission structure are getting worse. more and more obvious

In addition, another feature of this solution is that the powertrains are coaxially arranged, the axial length is too long, the structure is complex, the system reliability is low, and more clutches and brakes are needed to realize pure electric, idling start-stop, driving Power generation, independent drive, hybrid drive, regenerative braking and other working modes, the switching operation of each working mode is complicated, and the number of gear sets passed by the transmission is large, and the transmission efficiency is low

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