Single-motor hybrid power speed change system capable of realizing multiple PX functions

Abstract

The invention discloses a single-motor hybrid power speed change system capable of achieving multiple PX functions. The system comprises an input shaft and an output shaft. The input shaft comprises afirst input shaft and a second input shaft; the second input shaft is a hollow shaft and is arranged on the outer surface of the first input shaft in a sleeving mode, and the first input shaft and the second input shaft can rotate independently. The output shaft comprises a first output shaft body in transmission connection with a first drive axle a second output shaft body in transmission connection with a second drive axle, a first clutch, a double-clutch device, a fourth clutch and a transmission assembly. According to the invention, the set of different configuration functions of fixed-axis hybrid power P0, P1, P2, P2.5, P3 and P4 can be realized by utilizing a single motor, and the newly added gears can be switched among multiple working modes according to the change of driving requirements so as to obtain the optimal dynamic property and fuel economy; the transmission can be improved on the basis of an existing transmission, the technical inheritance is good, and the cost is saved while the working stability is guaranteed.

Description

technical field [0001] The invention relates to the field of hybrid transmissions of hybrid vehicle power systems, in particular to a single-motor hybrid transmission system capable of realizing multiple PX functions. Background technique [0002] Due to the reduction of fossil fuels and the impact of climate warming, the development of new energy vehicles has received unprecedented attention. As an important branch of new energy vehicles, hybrid vehicles are suitable for the current transitional period between pure electric vehicles and fuel vehicles, and the research on its configuration is one of the key directions for the development of hybrid vehicles. [0003] Hybrid coupling devices can be divided into planetary gear type and fixed shaft gear type, as well as their combination. The fixed shaft gear hybrid coupling configuration is roughly modified based on the traditional transmission, and can be divided into P1, P2, P3 and P4 configurations according to the location...

AI Technical Summary

Problems solved by technology

The advantage of the P2.5 configuration is that the motor can be integrated inside the transmission, which can reduce the volume. The disadvantage is that the overall design becomes complicated, and if it is introduced through a long motor input shaft, it will take up the space of the transmission and cannot effectively use it.

P2.5 The position of the motor is difficult to arrange coaxially, and the parallel arrangement of different axes will affect the transmission efficiency

[0006] The patent with the publication number CN110145571A has the functions of P0, P1, and P2 while realizing shifting without power interruption, but it cannot realize the P4 configuration to directly drive another wheel and the P3 configuration to couple the output shaft through the reduction gear. Simultaneously limited number of gears

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