Dynamic coupling system for hybrid vehicle

Abstract

The invention provides a dynamic coupling system for a hybrid vehicle, which comprises an engine, a two-stage planetary gear mechanism, a first motor and a second motor, wherein the first motor is a hollow shaft motor and the second motor is a solid shaft motor; the output shaft of the engine is connected with the gear ring of the two-stage planetary gear mechanism; the hollow shaft of the first motor is connected with the sun gear of the two-stage planetary gear mechanism; the solid shaft of the second motor passes through the hollow shaft of the first motor to be connected with the planet carrier of the two-stage planetary gear mechanism; and thus, the power output by the engine serving as one power source and the power output by the second motor serving as the other power source are coupled by the two-stage planetary gear mechanism and output to a transmission shaft. The system has a simple structure and small volume, can save space and can be controlled simply; and thus, the system is suitable to be used as a power transmitting device for a front-engine rear-drive vehicle. Through the coordinated control over the engine, the first motor and the second motor, power outputs under different vehicle conditions can be realized.

Description

Technical field [0001] The invention relates to a power transmission device, in particular to a power coupling system of a hybrid vehicle. Background technique [0002] The prior art discloses two power transmission devices for hybrid vehicles composed of an engine, a motor, and a power synthesis mechanism. One of them is the front drive transmission: including the engine, two electric motors, planetary gear mechanism, final drive, differential, half shaft, etc. The other is the front-rear drive transmission: including the engine, two electric motors, planetary gear mechanism, gearbox, transmission shaft, final drive, differential, half shaft, etc. [0003] The aforementioned front-drive device is too large to be used in the power transmission device of the front-rear drive; although the aforementioned front-rear drive device can be used as the power transmission device of the front-rear drive vehicle, it needs to have an automatic transmission device. The power transmission devi...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned front front drive device is too large in size and is not suitable for the power transmission device of the front rear drive; although the above-mentioned front rear drive device can be used as the power transmission device of the front rear drive vehicle, it needs an automatic transmission device The power transmission device is complex in structure and cumbersome in control

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