Three-planet-row hybrid two-gear automatic transmission assembly

Abstract

The invention relates to a three-planet-row hybrid two-gear automatic transmission assembly. The three-planet-row hybrid two-gear automatic transmission assembly comprises a shell, an input shaft andan output shaft. The input shaft is used for being connected with a power device. The output shaft and a rotary shaft of an auxiliary drive motor are circumferentially fixed. A first gear ring, a second gear ring and a third gear ring are arranged in the shell. A first sun gear is fixedly connected to the input shaft. The first sun gear is engaged with first planet gears. The first planet gears are engaged with the first gear ring. A second sun gear is fixedly connected to the output shaft. The second sun gear is engaged with second planet gears. The second planet gears and the first planet gears are supported on a first rotary planet carrier. The second planet gears are engaged with inner teeth of the second gear ring. Outer teeth of the second gear ring are engaged with a first gear shifting element arranged on the shell. The second gear ring is a movable gear ring. A third sun gear is fixedly connected to the output shaft. The third sun gear is engaged with third planet gears. The third planet gears are engaged with inner teeth of the third gear ring. Outer teeth of the third gear ring are engaged with a second gear shifting element arranged on the shell.

Description

technical field [0001] The invention relates to an automobile transmission, in particular to a three-planet hybrid two-speed automatic transmission assembly. Background technique [0002] At present, there are two types of new energy vehicle technologies on the market: pure electric vehicles and hybrid vehicles. Hybrid electric vehicles combine electric drive with traditional internal combustion engine drive, that is, they are driven by generators, electric motors and engines, and the power is transmitted to the vehicle drive wheels through a transmission. Hybrid electric vehicles generally use multi-shaft ordinary gear transmissions. In traditional ordinary gear transmissions, the power transmission is through the meshing of multiple pairs of gears, the force is unbalanced, the deflection of the gears and gear shafts is large, the noise is large, and it is not suitable for high speed. rotation, otherwise it will be unstable and noisy. The battery of new energy vehicles oc...

AI Technical Summary

Problems solved by technology

Hybrid electric vehicles generally use multi-shaft ordinary gear transmissions. In traditional ordinary gear transmissions, the power transmission is through the meshing of multiple pairs of gears, the force is unbalanced, the deflection of the gears and gear shafts is large, the noise is large, and it is not suitable for high speed. rotation, otherwise unstable and noisy

The battery of new energy vehicles occupies a considerable space, resulting in a small space for the installation of the power system. Since the traditional ordinary gear transmission adopts a multi-shaft arrangement, the shifting elements for laterally moving gears are installed on the shafts, so the traditional ordinary The size of the gear transmission is large, and it is difficult to adapt to new energy vehicles. The power transmission loss of the transmission is too large, which affects the layout and performance of the vehicle.

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