Iron core and motor

Abstract

The embodiment of the present application provides an iron core and a motor, the iron core is cylindrical, the iron core includes an inner wall, an outer wall and two ends; the inner wall of the iron core is provided with grooves for embedding windings, so The embedded windings form end windings at both ends of the iron core; the outer wall of the iron core is provided with an axial oil passage groove, and the axial oil passage groove extends from one end of the iron core to the other end in the axial direction; The external cooling oil flows into the axial oil passage groove to cool the iron core, and the external cooling oil flows to both ends of the iron core through the axial oil passage groove to cool the end windings. The iron core provided by the present application can make the cooling oil fully contact with the iron core, thereby improving the cooling efficiency of the iron core.

Description

technical field [0001] The embodiments of the present application relate to the field of electric energy, and in particular to an iron core and a motor including the iron core. Background technique [0002] With the development of science and technology, people's demand for power equipment is getting higher and higher. Represented by electric vehicles, electric vehicles provide users with a convenient way of transportation with their excellent environmental protection performance, and become the mainstream direction in the future. In the electric vehicle technology, the motor, which is the core driving component of the electric vehicle, provides the driving force or recovery force for the electric vehicle. The development of motors determines the development of power equipment. At present, motors are gradually developing in the direction of high power density and small volume. However, with the improvement of the power density of the motor and the reduction of the volume ...

AI Technical Summary

Problems solved by technology

When using this method, the cooling oil usually has a small area and cannot even contact the iron core in the stator assembly, which greatly reduces the heat dissipation efficiency of the iron core; secondly, the housing usually needs to be provided with a special oil circuit to communicate with the oil injection ring. The connection makes the structure of the shell complex, and the oil injection ring and the end of the motor winding need to be closely matched, which increases the difficulty of assembly and manufacture of the components in the motor, thereby increasing the cooling cost of the motor

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