Transmissions, powertrains and vehicles

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, and the first planetary gear mechanism Including the first sun gear, the first planetary gear, the first planetary carrier and the first ring gear, the second planetary gear mechanism includes the second sun gear, the second planetary gear, the second planetary carrier and the second ring gear, the second tooth The ring is connected to the output end of the transmission, the first synchronizer fixes the first ring gear to the transmission housing or connects the first ring gear to the first sun gear, and the second synchronizer connects the second planet carrier to the transmission housing Fix or connect the second planet carrier with the second sun gear. According to the transmission of the present invention, by setting the structure of double planetary row and double synchronizer, fast, smooth and reliable shifting can be realized, and the structure of the transmission is simple and easy 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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