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CN-224233402-U - Stator assembly and motor

CN224233402UCN 224233402 UCN224233402 UCN 224233402UCN-224233402-U

Abstract

The application relates to the technical field of motors, aims to solve the problem of how to improve the slot filling rate of stator winding, and provides a stator assembly and a motor. Wherein, the stator assembly includes stator skeleton and winding. The stator framework comprises an iron core and an insulating layer, the iron core comprises a ring part and a plurality of stator teeth, the plurality of stator teeth are arranged on the periphery of the ring part and are distributed at intervals along the circumferential direction of the ring part, the insulating layer is injection molded outside the iron core, the thickness of the insulating layer is smaller than 0.3 millimeter, and the outer diameter of the stator framework is 26 millimeters to 30 millimeters. The winding is wound on the stator framework. The application has the advantages that the insulating layer is formed outside the iron core through injection molding, the thickness of the insulating layer is reduced, the groove filling rate of the stator framework and the utilization rate of corresponding enameled wires are improved through setting the thickness of the insulating layer to be less than 0.3 millimeter, the motor efficiency is further improved, the production reject ratio is reduced after the plastic coating process is used for replacing the powdering process, and the motor production efficiency and quality are also improved.

Inventors

  • Zhou Huoteng
  • LIU HANG

Assignees

  • 江苏东成园林机械有限公司

Dates

Publication Date
20260512
Application Date
20250424

Claims (10)

  1. 1. A stator assembly, comprising: The stator framework comprises an iron core and an insulating layer, wherein the iron core comprises a ring part and a plurality of stator teeth, the plurality of stator teeth are arranged on the periphery of the ring part and are distributed at intervals along the circumferential direction of the ring part, the insulating layer is injection-molded outside the iron core, the thickness of the insulating layer is less than or equal to 0.3 millimeter, the outer diameter of the stator framework is 26 millimeters to 30 millimeters, and And the winding is wound on the stator framework.
  2. 2. The stator assembly of claim 1, wherein: the thickness of the insulating layer is greater than or equal to 0.1 mm and less than or equal to 0.28 mm.
  3. 3. The stator assembly of claim 1, wherein: The insulating layer is integrally injection molded.
  4. 4. The stator assembly of claim 1, wherein: The insulating layer comprises a first insulating sleeve and a plurality of second insulating sleeves; The first insulating sleeve is coated outside the ring part; the second insulating sleeves are correspondingly coated outside the stator teeth one by one.
  5. 5. The stator assembly of claim 4, wherein: And a stator groove is formed between every two adjacent stator teeth, and the thickness of the second insulating sleeve on the groove wall of the stator groove is more than or equal to 0.25 mm and less than or equal to 0.3 mm.
  6. 6. The stator assembly of claim 5, wherein: the space ratio of the second insulation sleeve in the stator groove is 22-28%.
  7. 7. The stator assembly of claim 1, wherein: The stator framework is made of a composite material of nylon and glass fibers, and the glass fibers account for more than or equal to 10%.
  8. 8. The stator assembly of claim 1, wherein: The stator assembly further includes a stator support; The stator support axially penetrates through the ring part.
  9. 9. An electric machine, comprising: The rotor assembly comprises a rotor shell, a magnetic steel assembly and a rotating shaft, wherein the magnetic steel assembly is arranged on the inner wall of the rotor shell, the rotating shaft axially penetrates through the rotor shell, and the rotating shaft is radially arranged with the magnetic steel assembly at intervals, and The stator assembly of any one of claims 1 to 8, wherein the stator assembly is disposed through the magnetic steel assembly and is sleeved outside the rotating shaft.
  10. 10. The electric machine of claim 9, wherein: The motor also comprises a fan, wherein the fan is positioned at one end of the rotor shell along the axial direction and sleeved outside the rotating shaft.

Description

Stator assembly and motor Technical Field The application relates to the technical field of motors, in particular to a stator assembly and a motor. Background In the related art, a stator assembly is provided, an insulating layer is formed on the outer surface of an iron core through a powdering process and the like, and a winding is wound outside the insulating layer. However, the slot fill rate of the stator winding in the related art is low. Disclosure of utility model The application provides a stator assembly and a motor, which are used for solving the problem of how to improve the slot filling rate of stator winding. According to one aspect of the present application, a stator assembly is provided that includes a stator backbone and windings. The stator framework comprises an iron core and an insulating layer, the iron core comprises a ring part and a plurality of stator teeth, the plurality of stator teeth are arranged on the periphery of the ring part and are distributed at intervals along the circumferential direction of the ring part, the insulating layer is injection molded outside the iron core, the thickness of the insulating layer is less than or equal to 0.3 millimeter, and the outer diameter of the stator framework is 26 millimeters to 30 millimeters. The winding is wound on the stator framework. Above-mentioned stator module, because the insulating layer passes through injection moulding outside the iron core, be favorable to reducing the thickness of insulating layer, and through setting up the thickness of insulating layer and be less than 0.3 millimeter, improved stator frame's groove full rate. In one embodiment, the thickness of the insulating layer is greater than or equal to 0.1 millimeters and less than or equal to 0.28 millimeters. In one embodiment, the insulating layer is integrally injection molded. In one embodiment, the insulating layer includes a first insulating sleeve and a plurality of second insulating sleeves. The first insulating sleeve is coated outside the ring part. The plurality of second insulating sleeves are correspondingly coated outside the plurality of stator teeth one by one. In one embodiment, a stator slot is formed between every two adjacent stator teeth, and the thickness of the second insulating sleeve on the slot wall of the stator slot is greater than or equal to 0.25 mm and less than or equal to 0.3 mm. In one embodiment, the second insulating sleeve has a space ratio of 22% to 28% in the stator slot. In one embodiment, the stator skeleton is a composite material of nylon and glass fiber, and the glass fiber accounts for 10% or more. In one embodiment, the stator assembly further comprises a stator support. The stator support penetrates through the ring part along the axial direction. According to another aspect of the application there is provided an electrical machine comprising a rotor assembly and a stator assembly as described in any of the embodiments above. The rotor assembly comprises a rotor shell, a magnetic steel assembly and a rotating shaft, wherein the magnetic steel assembly is arranged on the inner wall of the rotor shell, the rotating shaft axially penetrates through the rotor shell, and the rotating shaft is radially arranged at intervals with the magnetic steel assembly. The stator assembly is arranged in the magnetic steel assembly in a penetrating way and sleeved outside the rotating shaft. In one embodiment, the motor further comprises a fan, and the fan is located at one end of the rotor housing along the axial direction and sleeved outside the rotating shaft. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a perspective view of a motor in an embodiment of the application. Fig. 2 is an exploded view of the motor in the embodiment shown in fig. 1. Fig. 3 is a cross-sectional view of the motor in the embodiment shown in fig. 1. Fig. 4 is a perspective view of the stator assembly of the embodiment shown in fig. 1. Fig. 5 is an exploded view of the stator assembly of the embodiment shown in fig. 1. Fig. 6 is a perspective view of the stator frame in the embodiment shown in fig. 1. Fig. 7 is an exploded view of the stator frame in the embodiment shown in fig. 1. Description of main reference numerals: motor 1000 Stator assembly 100 Stator frame 10 Iron core 11 Ring portion 111 Stator teeth 112 Insulating layer 12 First insulating sheath 121 Second insulating sheath 122 Extension 123 Winding 20 Stator support 30 Rotor assembly 200 Rotor housing 210 Magnetic steel assembly 220 Magnetic steel