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CN-122026639-A - Stator assembly and motor

CN122026639ACN 122026639 ACN122026639 ACN 122026639ACN-122026639-A

Abstract

The application provides a stator assembly and a motor. The stator assembly comprises an annular iron core support and at least one group of iron core assemblies, wherein the iron core assemblies comprise first iron core pieces and second iron core pieces, the first iron core pieces and the second iron core pieces are arranged on the annular iron core support and are axially distributed along the annular iron core support, and materials of the first iron core pieces and the second iron core pieces are different. The stator assembly provided by the application can improve the power density of the motor.

Inventors

  • ZHOU YUBIN
  • YANG LEI
  • QIN XUEFEI

Assignees

  • 美的集团股份有限公司
  • 广东极亚精机科技有限公司

Dates

Publication Date
20260512
Application Date
20251225

Claims (12)

  1. 1. A stator assembly, the stator assembly comprising: A toroidal core support (110); at least one group of iron core components (120), wherein the iron core components (120) comprise a first iron core component (121) and a second iron core component (122), and the first iron core component (121) and the second iron core component (122) are arranged on the annular iron core support (110) and are distributed along the axial direction of the annular iron core support (110); Wherein the first core member (121) and the second core member (122) are of different materials.
  2. 2. The stator assembly of claim 1 wherein the stator assembly is formed from a plurality of stator segments, The annular core support (110), the first core member (121) and the second core member (122) are all of different materials.
  3. 3. The stator assembly of claim 2 wherein the stator assembly is formed from a plurality of stator segments, The annular iron core support (110) is a non-oriented silicon steel annular iron core support (110); the first iron core piece (121) is an oriented silicon steel iron core piece; The second core piece (122) is an amorphous iron core piece.
  4. 4. The stator assembly of claim 1 wherein the stator assembly is formed from a plurality of stator segments, The annular iron core support (110) comprises a yoke part (111) and a plurality of tooth parts (112) arranged at intervals along the circumferential direction of the yoke part, the tooth parts (112) extend towards the inside along the radial direction of the annular iron core support (110), a plurality of first containing grooves (113) corresponding to the number of the tooth parts (112) are also arranged on the annular iron core support (110) along the circumferential direction of the annular iron core support, the plurality of first containing grooves (113) are arranged at intervals along the circumferential direction, and the first iron core piece (121) and the second iron core piece (122) are arranged in the first containing grooves (113); Wherein, first holding groove (113) is including first slot section (1131) and second slot section (1132) that communicate each other, second slot section (1132) are located tooth portion (112), first slot section (1131) is located yoke portion (111).
  5. 5. The stator assembly of claim 4 wherein the stator assembly is formed from a plurality of stator segments, The side wall of the tooth part (112) close to the center of the annular iron core support (110) forms a protruding part (114) along the circumferential direction, and the protruding parts (114) adjacent to the tooth part (112) are arranged at intervals.
  6. 6. The stator assembly of claim 4 wherein the stator assembly is formed from a plurality of stator segments, The first groove section (1131) has a first radial side wall and a second radial side wall that is distant from the tooth (112) in the circumferential direction, and is connected by an inclined wall, so that a gap exists between the second core element (122) and the second side wall.
  7. 7. The stator assembly of claim 6 wherein the stator assembly is formed from a plurality of stator segments, The gap is less than or equal to 1mm.
  8. 8. The stator assembly of claim 1 wherein the stator assembly is formed from a plurality of stator segments, The first core member (121) and the second core member (122) are the same in size in the axial direction.
  9. 9. The stator assembly of claim 1 wherein the stator assembly is formed from a plurality of stator segments, The first iron core piece (121) comprises a first magnetic conduction portion (1211) and a second magnetic conduction portion (1212), the first magnetic conduction portion (1211) and the second magnetic conduction portion (1212) are arranged along the radial direction of the annular iron core support (110), the first magnetic conduction portion (1211) extends towards the circumferential direction of the annular iron core support (110), the second magnetic conduction portion (1212) extends towards the radial direction, and the first magnetic conduction portion (1211) and the second magnetic conduction portion (1212) are oriented silicon steel with different rolling directions.
  10. 10. The stator assembly of claim 9 wherein the stator assembly is formed from a plurality of stator segments, The first magnetic conduction part (1211) is an oriented silicon steel rolled along the circumferential direction; The second magnetic conduction part (1212) is of oriented silicon steel rolled along the radial direction.
  11. 11. The stator assembly of claim 1 wherein the stator assembly is formed from a plurality of stator segments, The stator assembly comprises a plurality of groups of iron core assemblies (120), wherein the iron core assemblies (120) are arranged along the axial direction, and the iron core assemblies (120) have the same size in the axial direction.
  12. 12. An electric machine, the electric machine comprising: the stator assembly of any one of claims 1-11.

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 The permanent magnet synchronous motor has the advantages of high efficiency, high power density, high power factor and the like, and is widely applied. However, when the motor works under a high-frequency working condition, the iron loss of the iron core is increased sharply along with the increase of frequency, and the efficiency of the motor is reduced. Disclosure of Invention The application provides a stator assembly and a motor so as to improve the efficiency of the motor. In order to solve the technical problems, the application provides a stator assembly, which comprises an annular iron core support and at least one group of iron core assemblies, wherein the iron core assemblies comprise a first iron core piece and a second iron core piece, the first iron core piece and the second iron core piece are arranged on the annular iron core support and are distributed along the axial direction of the annular iron core support, and the materials of the first iron core piece and the second iron core piece are different. In one embodiment, the toroidal core support, the first core member and the second core member are all of different materials. In one embodiment, the annular iron core support is a non-oriented silicon steel annular iron core support, the first iron core piece is an oriented silicon steel iron core piece, and the second iron core piece is an amorphous iron core piece. In one embodiment, the annular iron core support comprises a yoke part and a plurality of teeth arranged at intervals along the circumferential direction of the yoke part, the teeth extend towards the inside along the radial direction, a plurality of first containing grooves corresponding to the teeth are further arranged on the annular iron core support along the circumferential direction of the annular iron core support, the plurality of first containing grooves are arranged at intervals along the circumferential direction, the first iron core piece and the second iron core piece are arranged in the first containing grooves, wherein the first containing grooves comprise a first groove section and a second groove section which are communicated with each other, the second groove section is located at the teeth, and the first groove section is located at the yoke part. In one embodiment, the tooth portions are formed with protrusions along the circumferential direction near the side wall of the center of the annular core support, and the protrusions of adjacent tooth portions are arranged at intervals. In an embodiment, the first radial side wall of the first slot section is connected to the second radial side wall of the second slot section, which is located away from the teeth in the circumferential direction, by means of an inclined wall, so that a gap is present between the second core element and the second side wall. In one embodiment, the gap is less than or equal to 1mm. In an embodiment, the first core member and the second core member are the same size in the axial direction. In an embodiment, the first iron core piece includes a first magnetic conduction portion and a second magnetic conduction portion, the first magnetic conduction portion and the second magnetic conduction portion are arranged along a radial direction of the annular iron core support, the first magnetic conduction portion extends towards a circumferential direction, the second magnetic conduction portion extends towards a radial direction, and the first magnetic conduction portion and the second magnetic conduction portion are oriented silicon steel with different rolling directions. In one embodiment, the first magnetically permeable portion is circumferentially rolled oriented silicon steel and the second magnetically permeable portion is radially rolled oriented silicon steel. In one embodiment, the stator assembly includes a plurality of sets of core assemblies arranged axially, wherein the core assemblies are the same size in the axial direction. In order to solve the technical problems, the application provides a motor, which comprises the stator assembly of any one of the above. The stator assembly has the beneficial effects that the stator assembly comprises the annular iron core support and at least one group of iron core assemblies, the iron core assemblies comprise first iron core pieces and second iron core pieces, the first iron core pieces and the second iron core pieces are arranged on the annular iron core support and are distributed along the axial direction of the annular iron core support, and materials of the first iron core pieces and the second iron core pieces are different. Compared with a laminated non-oriented silicon steel stator assembly, the stator assembly comprises an annular iron core support, a first iron core piece and a second iron core piece, wherein the firs