Two-shift pure electric vehicle power system

Abstract

The invention provides a two-shift pure electric vehicle power system with a relatively simple structure, low cost and less control difficulty. The two-shift pure electric vehicle power system comprises a clutch, a transmission and an output shaft of a brake, and a planetary row. A sun wheel of the planetary row is located within a planetary carrier, planetary wheels of the planetary row are rotatably mounted on the planetary carrier, and a gear ring of the planetary row is located outside the planetary carrier. The right end of the motor shaft of a drive motor is fixedly connected with the sun wheel of the planetary row, and the right end of the planetary carrier of the planetary row is fixedly connected with the output shaft. The two-shift pure electric vehicle power system is characterized in that it further comprises an outer race and a one-way clutch, the one-way clutch and the clutch of the transmission are positioned side by side between the drive motor and the sun wheel of the planetary row in the left-and-right direction, the outer ring of the one-way clutch is fixed, the inner ring is connected with the left end of the outer race, the inner drum of the clutch of the transmission is connected with the motor shaft of the drive motor, the outer drum is connected with the left end of the planetary carrier of the planetary row, the right end of the outer race is fixedly connected with the gear ring of the planetary row, and the middle part is connected with the brake.

Description

technical field [0001] The invention relates to a pure electric vehicle power system, in particular to a two-speed pure electric vehicle power system. Background technique [0002] At present, a common two-speed pure electric vehicle power system includes a drive motor including a motor shaft, a transmission including a clutch and a brake, an output shaft, and its sun gear is located in the planet carrier, and the planet gear is rotatably mounted on the planet carrier 1. The ring gear is located on the planetary row outside the planetary carrier, the right end of the motor shaft of the drive motor is fixedly connected to the sun gear of the planetary row, and the right end of the planetary carrier of the planetary row is fixedly connected to the output shaft. The problem of the two-speed pure electric vehicle power system with this structure is that in order to realize gear shifting, the transmission uses a clutch and a brake. The difficulty is relatively large. In order to...

AI Technical Summary

Problems solved by technology

The problem of the two-speed pure electric vehicle power system with this structure is that in order to realize gear shifting, the transmission uses a clutch and a brake. The difficulty is relatively high. In order to prevent the impact during the shifting process, the precision requirements of the control mechanism are relatively high, the structure is relatively complicated, and the cost is high.

Images