An integrated electric drive system and its control method

Abstract

The invention discloses an integrated electric driving system. The integrated electric driving system comprises a gearbox housing, a driving motor, a planetary gear train, an engagement sleeve, a braking device, a first engagement gear ring and a second engagement gear ring, wherein the driving motor is arranged in the gearbox housing and provided with a driving motor output shaft; the planetary gear train comprises a planetary sun gear, a planetary row planetary carrier, a planetary row planetary gear and a planetary row inner gear ring; the engagement sleeve is connected with the planetary row inner gear ring; the braking device is fixed to the inner wall of the gearbox housing and selectively enables the gearbox housing and the planetary row inner gear ring to be engaged and disengaged;the first engagement gear ring is connected with the planetary row planetary carrier; the second engagement gear ring is connected with the braking device; and the first engagement gear ring and thesecond engagement gear ring are arranged on two sides of the engagement sleeve, and the engagement sleeve is selectively connected with the first engagement gear ring and the second engagement gear ring. The rotational inertia of a synchronous end during gear engagement can be reduced, and gear shifting force is reduced. The invention further provides a control method of the integrated electric driving system.

Description

technical field [0001] The invention relates to an integrated electric drive system and a control method thereof, belonging to the field of electric vehicles. Background technique [0002] As an indispensable means of transportation in modern society, automobiles play an extremely important role in the national economy and people's daily life. The automobile industry not only represents the level of a country's industrial development, but also embodies the application of new materials, new processes, new technologies and new equipment, and the automobile industry is a technology-intensive industry with economies of scale and high added value. powerful impetus. As a pillar industry of the national economy, the development of the automobile industry has been highly valued by countries all over the world. Fierce competition has promoted the continuous improvement of automobile production and research and development. [0003] With the development of the economy, people's qual...

AI Technical Summary

Problems solved by technology

If the electric vehicle adopts a parallel shaft arrangement, it generally uses a synchronizer or an adapter sleeve as a shift element. The shift actuator is small, but the parallel shaft type has a relatively large space, which is not conducive to integration with the motor, and is not conducive to the integration of the entire vehicle. Arrangement; if the electric vehicle adopts the arrangement of planetary row, it generally uses a multi-disc clutch as the shifting element, and the hydraulic system of the actuator increases the volume and complexity of the entire system, which is not convenient for the layout of the whole vehicle.

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