Hybrid power vehicle driving system capable of realizing single-motor two-gear driving

Abstract

The invention aims to provide a hybrid power vehicle driving system capable of realizing single-motor two-gear driving. The hybrid power vehicle driving system comprises an engine, a planetary gear mechanism, a synchronizer and a first motor; the planetary gear mechanism comprises a sun wheel fixedly connected with a transmission shaft of the engine, an outer gear ring connected with a brake, a planet carrier connected with the outer gear ring through a clutch and a planetary gear; the synchronizer is fixedly connected onto an intermediate shaft; the two sides of the synchronizer are meshed with a first gear and a second gear separately; the first gear and the second gear are sleeved on the intermediate shaft in a separated manner; the outer gear ring and the planet carrier are coaxially and fixedly connected with a third gear and a fourth gear separately; the third gear and the fourth gear are meshed with the second gear and the first gear separately; a fifth gear and a sixth gear arefixedly connected with the intermediate shaft and the transmission shaft of the first motor separately and are meshed with a differential mechanism gear and the first gear fixedly connected onto a differential mechanism. Under the pure electric drive mode, the hybrid power vehicle driving system can form two speed ratios, more structures are not needed, and the hybrid power vehicle driving systemhas the ECVT function.

Description

technical field [0001] The invention belongs to the technical field of hybrid vehicle drive, and in particular relates to a hybrid vehicle drive system capable of realizing single-motor two-speed drive. Background technique [0002] Hybrid vehicle drive is the core stage of the development of new energy vehicles. In order to obtain more functions and higher efficiency, the current hybrid vehicle drive system adopts a relatively complicated structure and high cost. The prior art CN108725178A discloses a single planetary gear multi-mode hybrid transmission, specifically discloses a technical solution in which the input gear of the drive motor and the input gear of the engine in one gear share the same output gear, however, there are the following problems : 1) The common gear and the output shaft are fixedly connected. When the drive motor is driven separately, the function of two speed ratios of the drive motor cannot be realized through the planetary gear. If an additional s...

AI Technical Summary

Problems solved by technology

[0002] Hybrid vehicle drive is the core stage of the development process of new energy vehicles. In order to obtain more functions and higher efficiency, the current hybrid vehicle drive system adopts a relatively complicated structure and high cost

The prior art CN108725178A discloses a single planetary gear multi-mode hybrid transmission, and specifically discloses a technical solution in which the input gear of the drive motor and the input gear of the engine in one gear share the same output gear, but there are the following problems : 1) The common gear and the output shaft are fixedly connected. When the drive motor is driven separately, the function of two speed ratios of the drive motor cannot be realized through the planetary gear. If an additional set of gears is added, the complexity of the system will be increased; 2) The function of torque compensation and power splitting of the drive motor to the engine cannot be realized when starting

Images