Manufacturing method of stator of oil-cooled motor

Abstract

The invention discloses a manufacturing method of a stator of an oil-cooled motor. The motor comprises a stator iron core, a spraying ring and a casing, the stator iron core comprises a first stator punching sheet, a second stator punching sheet and a third stator punching sheet which are laminated, the stator iron core, a spraying ring and a casing form a cooling flow channel after being installed, an oil inlet hole at the top of the casing is communicated with the cooling flow channel, and cooling oil sprayed by the spraying ring flows out from an oil outlet hole in the bottom of the casing.The motor is simple in structure and reasonable in design, cooling oil makes direct contact with the end of the stator winding and the surface of the stator to take away heat, a good cooling effect is achieved, due to the fact that the diameter of the inner circle of the motor shell is consistent without the cooling flow channel, manufacturing is easy, and design and manufacturing of various types and specifications can be met by changing the length of the stator. Therefore, the universalization degree of the casing is improved, and the purposes of low manufacturing difficulty, short production period and low cost are achieved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a stator manufacturing method of an oil-cooled motor. Background technique [0002] In recent years, there has been a demand for lightweight motors in most motor applications. Motors need to output greater torque and higher power in a smaller volume. This will put forward higher requirements for the heat dissipation of the motor to ensure the safety, reliability and light weight of the motor, and the liquid cooling method is a relatively simple, safe and efficient cooling method. Based on such requirements, liquid-cooled motors currently on the market use metal casings containing cooling channels in which the motor stator is cooled by water-based coolant, and the cooling medium does not come into contact with the stator; the second is that the motor uses The cooling oil flows into the motor, flows through the outer surface of the motor iron core and sprays to the winding for con...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned applications, the lubricating oil is cooled by the cooling flow channel and the spray oil device arranged on the casing to cool the motor core and windings, but because the cooling flow path and the spray device are set on the casing, the motor casing Difficulty in mold manufacturing and processing, and each type of motor needs to have different flow channels, which will inevitably affect the generalization of motor casings, increase the number of molds and casings, and is not conducive to mass production of motors, reducing the cost of motors Manufacturing efficiency and increased difficulty, further affecting economic benefits

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