Transmission, power driving system and vehicle

Abstract

The invention discloses a transmission, a power driving system and a vehicle. The transmission comprises a first planetary gear mechanism, a second planetary gear mechanism, an input shaft, a middle shaft, a first synchronizer and a second synchronizer. The first planetary gear mechanism comprises a first sun gear, a first planet gear, a first planet carrier and a first gear ring; the second planetary gear mechanism comprises a second sun gear, a second planet gear, a second planet carrier and a second gear ring; the second gear ring is connected with the output end of the transmission, the first synchronizer makes the first gear ring fixed with a shell of the transmission or the first gear ring connected with the first sun gear, and the second synchronizer makes the second planet carrierfixed with the shell of the transmission or the second planet carrier connected with second sun gear. According to the transmission, through the arrangement of a double-planet-row double-synchronizerstructure, gear shifting can be achieved quickly, smoothly and reliably, 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 drive vehicles, electric vehicles, and extended-range electric vehicles are the future development direction of automobiles, and they are also the main forms of new energy vehicles. 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 a drag torque due to...

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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