Single-motor hybrid drive system based on dual-clutch automatic transmission

Abstract

The invention discloses a single-motor hybrid power driving system based on a double-clutch automatic gearbox. The single-motor hybrid power driving system comprises an engine, a motor and the double-clutch automatic gearbox. The double-clutch automatic gearbox is connected with a differential mechanism installed on a rotating shaft of automobile wheels, and comprises an input shaft, an inner input shaft, an outer input shaft, a first output shaft and a second output shaft, wherein the input shaft is connected with the engine, the inner input shaft is connected with the motor, the outer input shaft is sleeved on the inner input shaft in a rotating and matching mode, and the first output shaft and the second output shaft are used for outputting power. A first clutch is arranged between the inner input shaft and the input shaft, a second clutch is arranged between the outer input shaft and the input shaft, a gear stage structure is arranged among the first output shaft, the inner input shaft and the outer input shaft, and a gear stage structure is arranged among the second output shaft, the inner input shaft and the outer input shaft. An inter-shaft synchronizer used for driving the inner input shaft and the outer input shaft to rotate synchronously is arranged between the inner input shaft and the outer input shaft. The single-motor hybrid power driving system is simple in structure and easy to control, and the motor with small power can be selected while the power performance is ensured.

Description

technical field [0001] The invention relates to a hybrid drive system, in particular to a single-motor hybrid drive system based on a double-clutch automatic transmission. Background technique [0002] The hybrid drive system has a variety of operating conditions, and can realize various drive modes such as pure electric drive, engine independent drive, hybrid drive, and regenerative braking. The key technology of the hybrid drive system is to be able to switch between different drive modes, and at the same time reduce the difficulty of switching control process. [0003] In the hybrid drive system, the automatic transmission must be relied on to realize the gear shifting process, because the hybrid electric vehicle contains multiple power sources, and to achieve reasonable energy management for different power sources, it is necessary to rely on the instructions of the electronic control system to complete the vehicle in different operations. The selection and shift proces...

AI Technical Summary

Problems solved by technology

The motor is placed behind the DCT gearbox, which has the advantages of small changes to the traditional dual-clutch automatic transmission car and convenient layout. However, because the motor is placed behind, the required motor power and battery capacity are large. The speed ratio gear outputs power, and the speed of the motor cannot be adjusted through the transmission to improve efficiency

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