Motor, power assembly, power equipment and motor cooling method

Abstract

The invention discloses a motor, a power assembly, power equipment and a motor cooling method, and belongs to the field of motor cooling. The motor comprises a motor body and an oil cooling mechanism,wherein the oil cooling mechanism comprises a cooling stator oil groove, a cooling winding group oil groove, an oil inlet channel and an oil outlet channel; the cooling stator oil groove is formed ina first inner wall, opposite to a stator, of a machine shell, the cooling winding group oil groove is formed in the upper part of a second inner wall, opposite to an end part winding group, of the machine shell, and the cooling winding group oil groove communicate with the cooling stator oil groove; the oil inlet channel is arranged on the upper part of the machine shell, and the oil inlet channel communicates with the cooling stator oil groove; the oil outlet channel is arranged on the lower part of the machine shell, and the oil outlet channel communicate with the cooling stator oil grooveand an annular space between the machine shell and the end part winding group; the oil cooling mechanism cannot increase the size of the machine shell of the motor additionally, the thickness of the machine shell is obviously reduced, and the small size characteristics of the motor is ensured; the oil cooling mechanism enables cooling oil to be in directly contact with the outer wall of the statorand the end part winding group, sufficient cooling is ensured, and the heat dissipation under large power of the motor is met; and the oil cooling mechanism enables an oil way system to be more simple and reliable, and the application is high.

Description

technical field [0001] The present disclosure relates to the field of motor cooling, and in particular, to a motor, a power assembly, a power equipment and a motor cooling method. Background technique [0002] As a power device, such as the power source of electric vehicles, the motor has a wide range of applications. Its main body includes a rotating shaft, a rotor fixedly sleeved on the rotating shaft, a stator with a gap sleeved outside the rotor, a winding installed on the stator, and a fixed sleeve on the stator. The exterior is used to house the above-mentioned components in a case. The windings are respectively formed as end windings at the front and rear ends of the stator. Due to the small size and high power of the motor, during its operation, the winding will generate a large amount of Joule loss, and at the same time, the stator will generate a large amount of eddy current loss and hysteresis loss. If the heat caused by the above losses cannot be dissipated in t...

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Problems solved by technology

[0005] The motor provided by the prior art accommodates the oil cooling mechanism by providing a gap between the stator and the casing, which will increase the volume of the casing, and it is difficult to ensure sufficient cooling by providing oil spray holes on the oil pipe

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