Stator oil-immersed circulating cooling structure of built-in disc type motor

Abstract

The invention discloses a stator oil-immersed circulating cooling structure of a built-in disc type motor. The structure uses a double-rotor and single-stator framework, a stator comprises a stator winding on the outer side of a stator iron core and magnetically soft alloy powder inside the stator iron core, and double rotors comprise a non-driving end rotor and a driving end rotor; and through relative movement of the stator with the non-driving end rotor and the driving end rotor, the contact area of cooling coil inside the motor is larger, and the heat exchange efficiency is higher. The disc type motor in the stator oil-immersed circulating cooling structure has higher temperature rising resistance level, can bear higher overload, and is more compact in structure, so that the power density and torque density of the motor are improved, and the motor is suitable for the power, in the fields of which the working environment has strict requirements on space, of blade electric vehicles and hybrid electric vehicles.

Description

technical field [0001] The invention relates to a built-in disc motor, in particular to a stator oil-immersed circulating cooling structure of the built-in disc motor. Background technique [0002] The motors used in the field of pure electric and hybrid vehicles are mostly permanent magnet synchronous motors or induction motors with radial flux. Due to the large axial installation size of traditional radial motors, the power density and efficiency are relatively low, which is not conducive to reducing the size of the motor. size and reduce energy consumption. [0003] Conventional water-cooled motors generally adopt a single cooling form such as base water cooling or end cover water cooling, while electric and hybrid electric vehicle motors require high protection levels, the installation space in the car is small, and the heat inside the motor is due to poor thermal conductivity of the air. , Sometimes only relying on the water cooling of the machine base or the water coo...

AI Technical Summary

Problems solved by technology

[0002] The motors used in the field of pure electric and hybrid vehicles are mostly permanent magnet synchronous motors or induction motors with radial flux. Due to the large axial installation size of traditional radial motors, the power density and efficiency are relatively low, which is not conducive to reducing the size of the motor. size and reduced energy consumption

[0003] Conventional water-cooled motors generally adopt a single cooling form such as base water cooling or end cover water cooling, while electric and hybrid electric vehicle motors require high protection levels, the installation space in the car is small, and the heat inside the motor is due to poor thermal conductivity of the air. , Sometimes only relying on the water cooling of the machine base or the water cooling of the end cover to exchange heat often cannot take away the heat in time

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