Transmission, power driving system and vehicle

Abstract

The invention discloses a transmission, a power driving system and a vehicle. The transmission comprises an input shaft, a two-stage planetary gear mechanism, n single-stage planet gear mechanisms andn+1 synchronizers; a first synchronizer is used for connecting a second sun gear of a first single-stage planet gear mechanism with a first gear ring or a first sun gear; a i synchronizer is usedfor connecting a second sun gear of a i single-stage planet gear mechanism with a second planet carrier of a i-1 single-stage planet gear mechanism or a second sun gear of the i-1 single-stage planet gear mechanism; and an n+1 synchronizer is used for connecting the output end of the transmission with a second planet carrier of a n single-stage planet gear mechanism or a second sun gear of the n single-stage planet gear mechanism, wherein i is not less than 2 and not greater than n, and i and n are both a natural number. According to the transmission, by designing a structure of n+1 planet rows and the n+1 synchronizers, rapid, smooth and reliable shifting can be realized, and the transmission is simple in structure and convenient to maintain.

Description

technical field [0001] The invention belongs to the technical field of vehicle manufacturing, and in particular, relates to a transmission, a power drive system and a vehicle. Background technique [0002] Hybrid vehicles, electric vehicles, and extended-range electric vehicles are the future development directions of automobiles and the main forms of new energy vehicles. In the related art, the power transmission system has complex structure, complex working mode and complicated control strategy, the energy conversion efficiency needs to be improved, the engine kinetic energy and battery power cannot be fully utilized, and there are problems of secondary energy conversion, complex control and low efficiency. Specifically, in the related art, the disc clutch and disc brake of the vehicle control shifting, but when these two components do not work, there will be drag torque due to lubrication, resulting in low efficiency of the entire transmission. [0003] In addition, in t...

AI Technical Summary

Problems solved by technology

In related technologies, the structure of the power transmission system is complicated, the working mode is complicated, and the control strategy is cumbersome. The energy conversion efficiency needs to be improved, and the kinetic energy of the engine and the electric energy of the battery cannot be fully utilized. There are problems of secondary conversion of energy, complex control, and low efficiency.

Specifically, in the related art, the plate clutch and plate brake of the vehicle control gear shifting, but when these two components are not working, there will be drag torque due to lubrication, resulting in low efficiency of the entire transmission

[0003] In addition, in the multi-speed transmissions in the related art, most of the gears are selected by the shift fork and the sliding sleeve when the clutch cuts off the power. There are many pairs of gears, the space is large, and the structure is complicated, so there is room for improvement.

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