Oil cooling motor with integrated electric drive system

Abstract

The invention provides an oil cooling motor with an integrated electric drive system, and solves the problems of low integration, poor cooling effect of the stator and rotor of the motor and difficulty in ensuring uniformity of the air gap in the prior art. The oil cooling motor comprises a motor rotor, a motor stator, a transmission shaft, a cooling component and a casing, wherein the casing is divided into two chambers of a reducer working chamber and a motor working chamber; the transmission shaft passes through the motor rotor, one end of the transmission shaft is installed on the end cover of the motor through a first bearing, and the other end is mounted on the left housing or the right housing of the reducer through a second bearing; a reducer gear is also disposed on the transmission shaft; the motor stator is fixed between the right housing of the reducer and the end cover of the motor; the cooling component comprises an oil pump, an oil pipe and a heat exchanger; the heat exchanger is located outside the casing, the oil pump pumps the lubricating oil of the working chamber of the reducer through the oil pipe to the heat exchanger for cooling, then pumps into the working chamber of the motor and sprays on the motor stator and the motor rotor; and the two chambers are connected through an oil return hole.

Description

technical field [0001] The invention belongs to a vehicle drive mechanism, in particular to an oil-cooled motor for an integrated electric drive system. Background technique [0002] Affected by environmental pressure, energy security and other factors, the disadvantages of fuel vehicles have become increasingly prominent. Many countries, including China, have successively formulated "timetables for banning fuel vehicles". Has been widely recognized. Especially in China, driven by policies, the proportion of electric vehicles in the market is rapidly increasing. Among them, the electric drive assembly is one of the key components, which greatly affects the development of electric vehicles. [0003] At present, the electric drive assembly of automobiles mostly adopts the split structure of the motor and the reducer, and the two are assembled together after they are manufactured separately. This solution assembly has low integration, large volume, heavy weight, limited maxim...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the disadvantages of low integration, poor cooling effect of the motor stator and rotor, and difficulty in ensuring the uniformity of the air gap existing in the prior art, and provides an integrated electric drive system oil-cooled motor, which The motor is cooled by circulating oil. The cooling oil comes directly from the lubricating oil inside the reducer. The motor has simple structure, high reliability and high power density.

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