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CN-224204835-U - Stator core, stator assembly, motor, power assembly and vehicle

CN224204835UCN 224204835 UCN224204835 UCN 224204835UCN-224204835-U

Abstract

The utility model discloses a stator core, a stator assembly, a motor, a power assembly and a vehicle. The stator core body is provided with stator convex teeth which are arranged on the radial inner side of the stator core body, the stator tooth block is suitable for being sleeved with a stator winding, the stator tooth block is connected with the stator convex teeth, and the stator tooth block and the stator convex teeth are arranged in a split mode. The stator teeth are connected to the protruding part of the stator core body, namely the stator teeth, so that the assembly of the stator core is facilitated, the processing difficulty of the stator core body is reduced, the processing efficiency of the stator core body is improved, the structural strength and rigidity of the stator core body are ensured, the production efficiency of the stator assembly is improved, and meanwhile, the flexibility and convenience of winding of the winding coil can be improved due to the split arrangement of the stator teeth and the stator teeth, the slot filling rate of the winding coil is guaranteed, and the motor performance is improved.

Inventors

  • ZHANG BIN
  • GUO JIAXIONG
  • Jin Haoning

Assignees

  • 比亚迪股份有限公司

Dates

Publication Date
20260505
Application Date
20250410

Claims (20)

  1. 1. A stator core (100), characterized by comprising: The stator core comprises a stator core body (10), wherein the stator core body (10) is provided with stator convex teeth (11), and the stator convex teeth (11) are convexly arranged on the outer side or the inner side of the stator core body (10); The stator tooth block (21), stator tooth block (21) are suitable for around setting for sub-winding (20), stator tooth block (21) with stator tooth (11) are connected, stator tooth block (21) with stator tooth (11) components of a whole that can function independently setting.
  2. 2. The stator core (100) according to claim 1, wherein the stator tooth block (21) is provided radially inside the stator core body (10), one of the stator tooth block (21) and the stator tooth (11) is formed with a fitting groove (22), and the other of the stator tooth block (21) and the stator tooth (11) is fitted with the fitting groove (22).
  3. 3. The stator core (100) according to claim 2, characterized in that the fitting groove (22) is formed on the stator tooth block (21), the fitting groove (22) being open on a side facing the stator core body (10).
  4. 4. A stator core (100) according to claim 3, characterized in that the fitting groove (22) extends in the axial direction of the stator core body (10), the fitting groove (22) being open on both sides in the axial direction of the stator core body (10).
  5. 5. The stator core (100) according to claim 2, characterized in that at least one limit rib is formed on at least one side wall of the fitting groove (22), at least one limit groove is formed on a corresponding surface of the other one of the stator tooth block (21) and the stator tooth (11), the limit rib and the limit groove are fitted, and/or, At least one limit groove is formed on at least one side wall of the matching groove (22), at least one limit rib is formed on at least one side surface of the other one of the stator tooth block (21) and the stator convex tooth (11), and the limit rib is matched with the limit groove.
  6. 6. The stator core (100) of claim 5, wherein the plurality of spacing ribs is a plurality of the spacing ribs being spaced apart.
  7. 7. The stator core (100) according to claim 5, characterized in that a plurality of the limit ribs are arranged along a radial direction of the stator core body (10), the limit ribs extending along an axial direction of the stator core body (10); The limiting grooves are multiple, and the limiting ribs are matched with the limiting grooves respectively.
  8. 8. The stator core (100) according to claim 2, wherein the fitting groove (22) is provided on the stator tooth block (21), and the distance between the fitting groove (22) along the circumferentially opposite side walls of the stator core body (10) decreases in a direction toward the center of the stator core body (10) in the radial direction of the stator core body (10).
  9. 9. The stator core (100) according to claim 1, wherein the stator tooth segments (21) are mated with the corresponding stator teeth (11) by a connection structure (40), the connection structure (40) comprising a guiding portion (41) and a limiting portion (42), the guiding portion (41) being configured to guide the stator tooth segments (21) to approach the stator teeth (11) in a predetermined direction and to mate with the stator teeth (11), the limiting portion (42) being configured to limit the stator tooth segments (21) from being separated from the stator teeth (11) in a direction opposite to the predetermined direction.
  10. 10. The stator core (100) according to claim 1, comprising a plurality of the stator teeth (11) and a plurality of the stator teeth blocks (21), wherein the stator teeth (11) are disposed on the radial inner side of the stator core body (10), the plurality of the stator teeth (11) and the plurality of the stator teeth blocks (21) are respectively uniformly distributed along the circumferential direction of the stator core body (10), and at least part of the stator teeth blocks (21) are matched with the corresponding stator teeth (11) through a saw-tooth structure (23).
  11. 11. The stator core (100) according to claim 10, wherein the saw tooth structure (23) comprises: At least one first tooth structure (231), the first tooth structure (231) is located stator dogtooth (11) along at least one of the both sides that stator core body (10) circumference set up, first tooth structure (231) on perpendicular to the profile line (24) of the projection of stator core body (10) on the plane of axis include line segment group (26), line segment group (26) include: -a first wire section (28), a first end of the first wire section (28) being close to the stator core body (10), a second end of the first wire section (28) extending obliquely towards a direction away from the stator core body (10) and close to the centre of the stator core body (10); The first end of the second line segment (29) is connected with the second end of the first line segment (28), and the second end of the second line segment (29) obliquely extends towards the direction away from the stator core body (10) and close to the adjacent stator convex teeth (11).
  12. 12. The stator core (100) according to claim 11, characterized in that the first tooth structure (231) is provided on both sides of the stator teeth (11) arranged in the circumferential direction of the stator core body (10), and that on a projection plane perpendicular to the axis of the stator core body (10), groups of line segments (26) respectively provided on the both sides of the first tooth structure (231) have symmetry axes passing through the center of the stator core body (10); The line segment group (26) further comprises a third line segment (27), wherein the third line segment (27) is parallel to the symmetry axis and is connected with the first end of the first line segment (28) or the second end of the second line segment (29).
  13. 13. The stator core (100) according to claim 12, characterized in that the contour line (24) includes a plurality of the line segment groups (26), a plurality of the line segment groups (26) are sequentially connected in the direction of the symmetry axis, and the third line segment (27) of the line segment group (26) closest to the stator core body (10) is connected with the projection of the stator core body (10) on the projection plane.
  14. 14. The stator core (100) according to claim 12, characterized in that the angle between the first line segment (28) and the first direction is between 0 ° -45 °, and/or, An included angle between the second line segment (29) and the first direction is between 90 DEG and 135 DEG; The first direction is a direction pointing from the center of the stator core body (10) to the stator core body (10) in the direction of the symmetry axis of the first tooth structure (231) where the first line segment (28) is located.
  15. 15. The stator core (100) according to claim 11, wherein the stator tooth block (21) is provided with a tooth slot (25) with an opening facing the stator core body (10), the serrated structure (23) further comprises at least one second tooth structure (232), the second tooth structure (232) is arranged on two side walls of the tooth slot (25), and the contour shape of the second tooth structure (232) is matched with the contour shape of the first tooth structure (231).
  16. 16. A stator assembly (1) comprising the stator core (100) of any one of claims 1-15, and a stator winding (20), the stator winding (20) comprising: The insulation support (30) is sleeved on the stator tooth block (21); -a winding coil (34), said winding coil (34) being wound on said insulating support (30).
  17. 17. The stator assembly (1) according to claim 16, wherein the stator tooth blocks (21) are a plurality of, the stator tooth blocks (21) are all connected with the stator convex teeth (11), the insulating bracket (30) comprises a plurality of sub-brackets (31), the sub-brackets (31) are respectively formed with mounting grooves (33), the mounting grooves (33) are arranged at intervals along the circumferential direction of the stator core body (10), and the mounting grooves (33) are formed with openings at one side of the insulating bracket (30) away from the stator core body (10); At least part of the plurality of stator tooth blocks (21) are respectively penetrated in the plurality of mounting grooves (33) through the openings.
  18. 18. An electric machine, characterized by comprising a stator assembly (1) according to any one of claims 16-17.
  19. 19. A powertrain comprising an electric machine according to claim 18.
  20. 20. A vehicle comprising an electric machine according to claim 18, or a powertrain according to claim 19.

Description

Stator core, stator assembly, motor, power assembly and vehicle Technical Field The utility model relates to the technical field of motors, in particular to a stator core, a stator assembly, a motor, a power assembly and a vehicle. Background The stator assembly generally comprises a stator core and stator windings wound on the stator core, the stator core generally comprises a stator core body and stator tooth blocks, an assembly groove is formed in the inner side of the stator core body in the related art, the stator tooth blocks wound with the stator windings are matched with the assembly groove, the processing difficulty of the stator core body is high, and the production efficiency of the stator assembly is low. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a stator core that can improve the production efficiency of a stator assembly. A second object of the present utility model is to provide a stator assembly including the stator core in the above embodiment, and further including a stator winding. A third object of the present utility model is to provide an electric machine comprising the stator assembly of the above embodiments. A fourth object of the present utility model is to provide a powertrain including the motor of the above embodiment. A fifth object of the utility model is to propose a vehicle comprising an electric machine and/or a powertrain according to the above embodiments. According to the stator core, the stator core comprises a stator core body and stator tooth blocks, wherein the stator core body is provided with stator teeth, the stator core body is annular, the stator teeth are arranged on the outer side or the inner side of the stator core body in a protruding mode in the radial direction of the stator core body, the stator tooth blocks are suitable for being sleeved with stator windings, the stator tooth blocks are connected with the stator teeth, and the stator tooth blocks and the stator teeth are arranged in a split mode. According to the stator core provided by the embodiment of the utility model, the protruding part of the stator core body, namely the stator protruding teeth, is connected with the stator tooth block, compared with the stator tooth block which is directly connected with the stator core body, the stator core is more convenient to assemble, the processing difficulty of the stator core body is reduced, the processing efficiency of the stator core body is improved, the structural strength and rigidity of the stator core body are ensured, the production efficiency of a stator assembly is improved, and meanwhile, the split arrangement of the stator tooth block and the stator protruding teeth can improve the flexibility and convenience of winding a winding coil, ensure the slot filling rate of the winding coil and is beneficial to improving the motor performance. In some embodiments, the stator tooth block is disposed radially inside the stator core body, one of the stator tooth block and the stator tooth is formed with a mating groove, and the other of the stator tooth block and the stator tooth is mated with the mating groove. In some embodiments, the mating groove is formed on the stator tooth block, the mating groove being open on a side facing the stator core body. In some embodiments, the fitting groove extends in an axial direction of the stator core body, and the fitting groove is open at both sides in the axial direction of the stator core body. In some embodiments, at least one limit rib is formed on at least one side wall of the matching groove, at least one limit groove is formed on the corresponding surface of the other one of the stator tooth block and the stator tooth, the limit rib is matched with the limit groove, and/or at least one limit groove is formed on at least one side wall of the matching groove, at least one limit rib is formed on the surface of at least one side of the other one of the stator tooth block and the stator tooth, and the limit rib is matched with the limit groove. In some embodiments, the limit ribs are a plurality of, and a plurality of limit ribs are arranged at intervals. In some embodiments, the plurality of limit ribs are arranged along the radial direction of the stator core body, the limit ribs extend along the axial direction of the stator core body, the plurality of limit grooves are formed, and the plurality of limit ribs are respectively matched with the plurality of limit grooves. In some embodiments, the mating groove is formed on the stator tooth block, and the distance between two opposite side walls of the stator core body in the circumferential direction of the stator core body is reduced in a direction towards the center of the stator core body in the radial direction of the stator core body. In some embodiments, the stator tooth block is matched with the c