Transmission, power driving system and vehicle

Abstract

The invention discloses a transmission, a power driving system and a vehicle. The transmission comprises three planetary gear mechanisms, an input shaft, a first middle shaft, a second middle shaft, afirst synchronizer and a second synchronizer. A first gear ring of the first planetary gear mechanism is fixedly connected with a shell of the transmission, a second planet carrier of the second planetary gear mechanism is connected with the output end of the transmission, a third gear ring of the third planetary gear mechanism is fixedly connected with a shell of the transmission, a third planetcarrier of the third planetary gear mechanism is connected with a second gear ring, the first synchronizer enables the first middle shaft and a first planet carrier to be connected or enables the first middle shaft and a first sun gear to be connected, and the second synchronizer enables the first middle shaft and a second sun gear to be connected or enables the first middle shaft and the secondplanet carrier to be connected. According to the transmission, through the structure of three planetary lines and dual synchronizers, rapid, smooth and reliable gear shifting can be achieved, and thetransmission 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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