Dual-power input pure electric transmission

Abstract

The invention relates to a dual-power input pure electric transmission which comprises a transmission shell. A first input shaft, a second input shaft and an output shaft are arranged in the transmission shell, a three-gear driving gear is arranged on the first input shaft in a matched manner through a bearing and is connected with a gear-shifting gear capable of moving in the axial direction through a flange, one end of the gear-shifting gear is provided with combination teeth, and the other end is provided with first-gear driving teeth; the second input shaft is provided with a second-gear driving gear and a fourth-gear driving gear through bearings in a matched manner, and a second gear and fourth gear synchronizer is arranged between the second-gear driving gear and the fourth-gear driving gear; a second gear and third gear driven gear, a fourth gear driven gear and a first-gear driving gear are fixedly connected to the output shaft sequentially in the circumferential direction, the second gear and third gear driven gear is in constant meshing with the third-gear driving gear and the second-gear driving gear, and the fourth gear driven gear is in constant meshing with the fourth-gear driving gear; and the gear-shifting gear moves in the axial direction to enable the combination teeth of the gear-shifting gear to be meshed with the three-gear driving gear, or the first-gear driving teeth of the gear-shifting gear are meshed with the first-gear driven gear.

Description

technical field [0001] The invention relates to the field of transmissions, in particular to a dual power input pure electric transmission. Background technique [0002] With the depletion of petroleum resources and the increasing emphasis on environmental protection, pure electric vehicles have been widely optimistic about their application prospects and have developed rapidly due to their environmental friendliness and high energy conversion rate. [0003] At present, the powertrain of pure electric vehicles on the market mainly includes two forms: motor direct drive and motor matching transmission combination. Motor direct drive can realize stepless speed change, and the user experience is better. However, pure electric vehicles using motor direct drive have disadvantages such as poor acceleration performance and poor climbing performance, which lead to relatively large limitations of this type of pure electric vehicle. Therefore, the motor matching The powertrain of tra...

AI Technical Summary

Problems solved by technology

Because the motor has the curve characteristics of low-speed constant torque and high-speed constant power, it is usually required to match a high-power, high-speed motor to meet the requirements of vehicle gradeability and maximum speed at the same time. As the power increases, the volume of the motor increases correspondingly. The required battery capacity also increases accordingly, which is not conducive to the overall layout of pure electric vehicles

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