Power system of pure electric automobile

Abstract

The invention provides a power system of a pure electric automobile. The system comprises a drive motor (1) equipped with a motor shaft (2), a speed changer equipped with a clutch (7) and a brake (8), an output shaft (10) as well as a planet row of which a solar wheel (3) is located in a planet carrier (5), a planet wheel (4) is installed on the planet carrier in a rotatable manner, and a gear ring (6) is located beside the planet frame, wherein the right end of the motor shaft of the drive motor is firmly connected to the solar wheel of the planet row; and the right end of the planet frame of the planet row is firmly connected to the output shaft. The system also comprises an outer ring (9) and a one-way clutch (11), wherein the one-way clutch and the clutch of the speed changer are placed in a side-by-side manner and located between the drive motor and the solar wheel of the planet row; the outer ring of the one-way clutch is fixed, and the inner ring is firmly connected to the left end of the outer ring; an inner drum of the clutch is connected to the motor shaft of the drive motor, and the outer drum is connected to the middle part of the outer ring; and the right end of the outer ring is connected to the brake of the speed changer and the gear ring of the planet row at the same time.

Description

technical field [0001] The invention relates to a pure electric vehicle, in particular to a pure electric vehicle power system. Background technique [0002] Pure electric vehicles are a kind of clean energy vehicles. With the vigorous promotion of energy saving and emission reduction, pure electric vehicles have become a major development trend. At present, the common 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 installed on the planet carrier. The ring is located on the planet row outside the planet carrier, the right end of the motor shaft of the drive motor is fixedly connected to the sun gear of the planet row, and the right end of the planet carrier of the planet row is fixedly connected to the output shaft. This pure electric vehicle power system, in order to realize gear shifting, it...

AI Technical Summary

Problems solved by technology

This pure electric vehicle power system, in order to realize gear shifting, its transmission uses clutches and brakes, the existing problem is: in the process of shifting gears, in order to prevent power interruption, it is necessary to control the clutch and brakes at the same time, which is difficult to control; for To prevent the impact during the shifting process and reduce the impact during the shifting process, the precision of the control mechanism is high, the structure is more complicated, and the cost is higher

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