Motor cooling structure, motor and automobile

Abstract

The invention provides a motor cooling structure, a motor and an automobile. The motor cooling structure comprises a motor casing, wherein an axial oil passage is formed in the motor casing, the axialoil passage is communicated with a flow path of an external cooling oil supply component, at least one axial end of the axial oil passage is provided with an oil spraying part, and the oil spraying part can guide cooling oil in the axial oil passage to the axial end part of a stator coil and a bearing chamber arranged on a motor end cover at the same time. According to the motor cooling structure, the motor and the automobile, the stator coil in the motor casing and a bearing in the bearing chamber of the motor end cover can be efficiently cooled by the oil spraying part, the cooling structure is simple to design and manufacture, and the cooling effect is good.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a motor cooling structure, a motor and an automobile. Background technique [0002] At present, during the actual operation of the main drive motor of new energy vehicles, when it is at low speed and high torque, the stator and rotor of the main drive motor will emit a lot of heat. The heat dissipation method of the main drive motor is mostly to set up spiral water flow inside the motor casing In this way, the cooling effect of the motor can be achieved through the circulation of water in the casing. In this cooling method, the motor stator winding (coil) and the rotor cannot be directly cooled, and the main heat source of the main drive motor cannot be effectively cooled. Cooling, so the thermal load on the motor is limited, which in turn leads to a limited volume of the motor. In the prior art, in order to improve the cooling efficiency of the motor, an oil-cooled ...

AI Technical Summary

Problems solved by technology

[0002] At present, during the actual operation of the main drive motor of new energy vehicles, when it is at low speed and high torque, the stator and rotor of the main drive motor will emit a lot of heat. The heat dissipation method of the main drive motor is mostly to set up spiral water flow inside the motor casing In this way, the cooling effect of the motor can be achieved through the circulation of water in the casing. In this cooling method, the motor stator winding (coil) and the rotor cannot be directly cooled, and the main heat source of the main drive motor cannot be effectively cooled. Cooling, so the thermal load on the motor is limited, resulting in a limited motor volume

Images