Transmission, power drive system and vehicle

Abstract

The invention discloses a transmission, a power drive system and a vehicle. The transmission comprises a first planetary gear mechanism, a second planetary gear mechanism, an input shaft, an intermediate shaft, a first synchronizer and a second synchronizer. A second planetary carrier of the second planetary gear mechanism is connected with the output end of the transmission. The input shaft is connected with a first sun gear. A first toothed ring is connected with the intermediate shaft. The intermediate shaft is connected with the second sun gear. The first synchronizer enables the first planetary carrier to be fixed to a shell of the transmission or to be connected with the first sun gear. The second synchronizer enables a second toothed ring to be fixed to the shell of the transmissionor to be connected with the first toothed ring. According to the transmission, by arranging the double-planetary-line double-synchronizer structure, rapid, smooth and reliable gear shifting can be achieved; 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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