Search

CN-121984252-A - Stator, driving motor and vehicle

CN121984252ACN 121984252 ACN121984252 ACN 121984252ACN-121984252-A

Abstract

The application provides a stator, a driving motor and a vehicle, relates to the technical field of motor heat dissipation, and is used for solving the problem that the existing stator is poor in effect of cooling an end winding. The stator includes a first stator segment, a second stator segment, and a third stator segment. The external diameter of second stator section is greater than the external diameter of first stator section, has seted up a plurality of first oil guide passageway that set up along the circumference interval of second stator section on the second stator section. The outer diameter of the third stator segment is greater than the outer diameter of the first stator segment. And second oil guide channels are formed in the third stator section at intervals along the circumferential direction of the third stator section. The first oil guide channel and the second oil guide channel are positioned at the periphery of the first stator section along the radial direction of the first stator section and are used for enabling cooling oil to be obliquely sprayed towards the axial direction close to the first stator section. The stator can cool the end winding better.

Inventors

  • Tan mou
  • FAN XUHONG
  • PENG QIANLEI

Assignees

  • 深蓝汽车科技有限公司

Dates

Publication Date
20260505
Application Date
20241030

Claims (12)

  1. 1. A stator, comprising: a first stator section (21), the first stator section (21) being annular; A second stator section (22), wherein the second stator section (22) is annular, is arranged on one side of the first stator section (21) in a lamination manner along the axial direction of the first stator section (21), the outer diameter of the second stator section (22) is larger than that of the first stator section (21), a plurality of first oil guide channels (221) which are arranged at intervals along the circumferential direction of the second stator section (22) are arranged on the second stator section (22), and The device comprises a first stator section (21), a second stator section (23), a third stator section (23), a plurality of second oil guide channels (231) and a plurality of first oil guide grooves, wherein the first stator section (23) is annular, and is arranged on one side, far away from the second stator section (22), of the first stator section (21) in a stacking manner along the axial direction of the first stator section (21), the outer diameter of the first stator section (23) is larger than that of the first stator section (21), and the second stator section (23) is provided with the plurality of second oil guide channels (231) which are arranged at intervals along the circumferential direction of the third stator section (23); the first oil guide channel (221) and the second oil guide channel (231) are located at the periphery of the first stator section (21) along the radial direction of the first stator section (21) and are used for enabling cooling oil to be obliquely sprayed towards the axis direction close to the first stator section (21).
  2. 2. The stator according to claim 1, characterized in that the number of the first stator segments (21) is two, the second stator segments (22) are arranged on one side of the two first stator segments (21) in a stacked manner along the axial direction of the first stator segments (21), and the third stator segments (23) are arranged on one side of the two first stator segments (21) away from the second stator segments (22) in a stacked manner; The stator (20) further comprises: The stator comprises a first stator section (21), a second stator section (24), a plurality of third oil guide channels (241) and a plurality of third oil guide channels (241), wherein the first stator section (21) is arranged between the first stator section and the second stator section (24), the fourth stator section (24) is annular, the outer diameter of the fourth stator section (24) is larger than that of the first stator section (21), the plurality of third oil guide channels (241) are arranged on the fourth stator section (24) at intervals along the circumferential direction of the fourth stator section (24), and the third oil guide channels (241) are located on the periphery of the first stator section (21) along the radial direction of the first stator section (21).
  3. 3. The stator according to claim 2, characterized in that the second stator segment (22) comprises: The stator punching device comprises a plurality of second stator punching sheets (222), a plurality of first oil guide holes (223) and a plurality of second oil guide holes, wherein the second stator punching sheets (222) are stacked along the axial direction of the first stator section (21), and the second stator punching sheets (222) are provided with the first oil guide holes (223) which are arranged at intervals along the circumferential direction of the second stator punching sheets (222); The first oil guide holes (223) on the second stator punching sheets (222) are correspondingly arranged one by one along the axial direction of the first stator section (21) to form a plurality of first oil guide channels (221), and the first oil guide holes (223) forming the first oil guide channels (221) are gradually close to the axial line of the first stator section (21) along the axial direction of the first stator section (21) and away from the fourth stator section (24).
  4. 4. A stator according to claim 3, characterized in that the first oil guide holes (223) are circular, and a line connecting centers of the plurality of first oil guide holes (223) forming the first oil guide passage (221) passes through an axis of the first stator section (21).
  5. 5. The stator according to claim 4, characterized in that the line forming the centers of the plurality of first oil guiding holes (223) of the first oil guiding channel (221) is at an angle of 45 ° -60 ° to the axis of the first stator segment (21).
  6. 6. The stator according to claim 5, wherein a distance between adjacent two of the first oil guide holes (223) among the plurality of first oil guide holes (223) forming the first oil guide passage (221) in a radial direction of the first stator section (21) is equal to or less than a quarter of a diameter of the first oil guide hole (223) and equal to or more than an eighth of the diameter of the first oil guide hole (223).
  7. 7. The stator according to claim 2, characterized in that the third stator segment (23) comprises: The stator punching device comprises a plurality of third stator punching sheets (232), wherein the plurality of third stator punching sheets (232) are stacked along the axial direction of the first stator section (21), and a plurality of second oil guide holes (233) which are arranged at intervals along the circumferential direction of the third stator punching sheets (232) are respectively formed in the third stator punching sheets (232); the second oil guide holes (233) on the third stator punching sheets (232) are correspondingly arranged one by one along the axial direction of the first stator section (21) to form a plurality of second oil guide channels (231), and the second oil guide holes (233) forming the second oil guide channels (231) are gradually close to the axial line of the first stator section (21) along the axial direction of the first stator section (21) and away from the fourth stator section (24).
  8. 8. The stator according to claim 7, wherein the second oil guide holes (233) are circular, and a line connecting centers of the plurality of second oil guide holes (233) forming the second oil guide passage (231) passes through an axis of the first stator section (21).
  9. 9. The stator according to claim 8, characterized in that the line forming the centers of the plurality of second oil guiding holes (233) of the second oil guiding channel (231) is at an angle of 45 ° -60 ° to the axis of the first stator segment (21).
  10. 10. The stator according to claim 9, wherein a distance between adjacent two of the second oil guide holes (233) among the plurality of second oil guide holes (233) forming the second oil guide passage (231) in a radial direction of the first stator section (21) is equal to or less than a quarter of a diameter of the second oil guide hole (233) and equal to or more than an eighth of a diameter of the second oil guide hole (233).
  11. 11. A drive motor, characterized by comprising a stator (20) according to any one of claims 1-10.
  12. 12. A vehicle characterized by comprising a drive motor (100) according to claim 11.

Description

Stator, driving motor and vehicle Technical Field The application relates to the technical field of motor heat dissipation, in particular to a stator, a driving motor and a vehicle Background With the improvement of the living standard of people, automobiles become a necessary travel tool for most families. The electric automobile gradually occupies the main automobile market by virtue of the advantages of no pollution, energy conservation and the like. The driving motor is a main component structure of the electric automobile, and along with the gradual increase of the power density of the driving motor, the heat dissipation requirement of the driving motor is increased. At present, aiming at the heat dissipation mode of the driving motor, the air cooling and water cooling heat dissipation mode is gradually changed into the oil cooling heat dissipation mode. CN118263998a discloses a stator, a motor and a vehicle, the stator comprises a stator core, the stator core comprises a first lamination, a second lamination and a plurality of inserts, the second lamination is arranged on at least one side of the first lamination in the axial direction of the stator, the first lamination is provided with an oil duct extending along the axial direction of the stator, the second lamination is provided with a plurality of mounting grooves arranged at intervals along the circumferential direction of the stator, the mounting grooves extend along the axial direction of the stator, each mounting groove is embedded with at least one insert, and each insert is provided with a first oil injection hole communicated with the oil duct. The outer peripheral wall of the CN115276273A stator core is provided with a plurality of second grooves which are distributed at intervals along the circumferential direction of the stator core, the second grooves are staggered relative to the first grooves, and the second grooves are at least used for accommodating the armature winding. However, the above-described solution is not effective for cooling the windings at the stator end, and is not capable of cooling the windings at the stator end well. Disclosure of Invention The application aims to provide a stator, a driving motor and a vehicle, which are used for solving the problem that the existing stator has poor effect of cooling an end winding. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: In one aspect, an embodiment of the present application provides a stator including a first stator segment, a second stator segment, and a third stator segment. The first stator segment is annular. The second stator section is also annular, and is arranged on one side of the first stator section in a lamination manner along the axial direction of the first stator section. The external diameter of second stator section is greater than the external diameter of first stator section, has seted up a plurality of first oil guide passageway that set up along the circumference interval of second stator section on the second stator section. The third stator section is annular, along the axial direction of the first stator section, the third stator section is stacked on one side of the first stator section far away from the second stator section. The outer diameter of the third stator segment is greater than the outer diameter of the first stator segment. And second oil guide channels are formed in the third stator section at intervals along the circumferential direction of the third stator section. The first oil guide channel and the second oil guide channel are positioned at the periphery of the first stator section along the radial direction of the first stator section and are used for enabling cooling oil to be obliquely sprayed towards the axial direction close to the first stator section. According to the technical means, the stator provided by the embodiment of the application is characterized in that the first stator section, the second stator section and the third stator section are annular and are arranged in a lamination manner. Therefore, the winding can be wound on the stator, and the winding is convenient to set. Since the outer diameter of the second stator section is larger than the outer diameter of the first stator section, the outer diameter of the third stator section is larger than the outer diameter of the first stator section. The second stator segment and the third stator segment may be in interference fit with the inner wall of the motor housing. At this time, a gap exists between the first stator segment and the inner wall of the motor housing. The transport oil channel can be formed between the third stator segment and the second stator segment by means of the first stator segment. The first oil guide channel and the second oil guide channel are positioned at the periphery of the first stator section along the radial direction of the first stator section. Thus, the cooling oil in the tra