Drive gear shift mechanism for electric automobile

Abstract

The invention provides a drive gear shift mechanism for an electric automobile, which belongs to the technical field of electric automobiles and solves the problem of large difficulty in the gear shift control of the conventional electric automobile. The drive gear shift mechanism for the electric automobile comprises a firs gear gear set and a second gear gear set; a first driving shaft and a first driven shaft of the first gear gear set are connected through a first clutch; a second driving shaft and a second driven shaft of the second gear gear set are connected through a second clutch; a first driving gear and a second driving gear are meshed; and a first driven gear and a second driven gear are meshed, and the second driving shaft is connected with an electromotor. Gear shift is realized by separation and actuation of the clutch instead of changing the meshing of the gear, so that mechanical compact, wearing and noise can be reduced, and gear shift quality can be improved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and relates to a drive transmission mechanism for electric vehicles. Background technique [0002] The driving part of an electric vehicle is an electric motor. Compared with an internal combustion engine, an electric motor has the advantages of wide speed regulation range, wide high efficiency area, zero-speed operation, precise control of torque and speed, and convenient switching of two control modes, and easy switching of steering. , itself has strong adaptability to automobile working conditions. These characteristics determine that the electric vehicle transmission mechanism should (and can) have the following characteristics: [0003] 1. The number of gears does not need to be too many, just two gears, at most three gears, if the motor speed range is wide enough, single-stage deceleration is also acceptable; [0004] 2. Higher shifting quality can be achieved by controlling the...

AI Technical Summary

Problems solved by technology

[0006] However, most of the existing electric vehicles still use the transmission of traditional internal combustion engine models, and the gears are redundant, which increases the difficulty of unnecessary speed change control and reduces the convenience of driving and manipulation that electric vehicles should have; even the newly developed special transmission does not have Changing the shifting principle of traditional transmissions does not give full play to the advantages of electric motor drive

Images