CVT speed reducer for pure electric vehicle

Abstract

The invention discloses a CVT speed reducer for a pure electric vehicle. The CVT speed reducer for the pure electric vehicle comprises an input shaft and an output shaft, and further comprises a driving wheel and a driven wheel; the driving wheel is connected with the input shaft; the driven wheel is connected with the output shaft; and the driving wheel and the driven wheel are connected througha transmission belt, and are diameter-variable transmission wheels. The CVT speed reducer for the pure electric vehicle is reasonable in structural design; a chain wheel is adjusted through a hydraulic torque converter to realize an adjustable transmission ratio; the overall vehicle dynamic property and economy can be both considered; the high-speed economy is improved; the internal structure of the speed reducer is simplified; and the vehicle advancement and retreating can be realized through forward and reverse rotation of a motor; and through enlargement of an efficient section of the driving motor, the overall vehicle endurance is improved.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a CVT speed reducer for pure electric vehicles. Background technique [0002] At present, the single-stage reducer used in most pure electric vehicles usually cannot take into account the power and economy of pure electric vehicles at the same time. The power performance of the whole vehicle depends entirely on the driving motor. After that, there is no room for improvement, the speed is restricted, and the high-speed economy is not high; at the same time, because the fuel engine itself cannot achieve forward and reverse rotation, the traditional CVT reducer contains idler gears, clutches, forward and reverse gears inside, and the overall structure is more complicated. . Contents of the invention [0003] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a CVT reducer for pure electric vehicles...

AI Technical Summary

Problems solved by technology

[0002] At present, the single-stage reducer used in most pure electric vehicles usually cannot take into account the power and economy of pure electric vehicles at the same time. The power performance of the whole vehicle depends entirely on the driving motor. After that, there is no room for improvement, the speed is restricted, and the high-speed economy is not high; at the same time, because the fuel engine itself cannot achieve forward and reverse rotation, the traditional CVT reducer contains idler gears, clutches, forward and reverse gears inside, and the overall structure is more complicated.

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