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CN-122001106-A - Punching sheet, stator core, stator, actuator, suspension system and vehicle

CN122001106ACN 122001106 ACN122001106 ACN 122001106ACN-122001106-A

Abstract

The invention discloses a punching sheet, a stator core, a stator, an actuator, a suspension system and a vehicle, relates to the technical field of vehicles, and aims to solve the problem that the magnetic flux leakage phenomenon of the actuator is serious when the actuator works. And the punching sheet is used for the end part of the stator core. The outer end face of the punching sheet is provided with a magnetism isolating part which is arranged at intervals with the first outer edge of the punching sheet.

Inventors

  • YE YINGSONG
  • SUN XIANMENG
  • PAN JIAXIONG
  • SONG ENMIN
  • LI SONG

Assignees

  • 比亚迪股份有限公司

Dates

Publication Date
20260508
Application Date
20241101

Claims (20)

  1. 1. A punching sheet (110) for an end (100) of a stator core, wherein a magnetism isolating part (C1) is arranged on an outer end surface (A1) of the punching sheet (110), and the magnetism isolating part (C1) is arranged at intervals with a first outer edge (B1) of the punching sheet (110).
  2. 2. The die (110) recited in claim 1, wherein the magnetism isolating portion (C1) includes a recessed portion recessed from the outer end face (A1) toward the inside of the die (110).
  3. 3. The sheet (110) of claim 2, wherein the recess has a thickness dimension D1 in a thickness direction of the sheet (110), and the sheet (110) has a thickness dimension D2, d1:d2, of between 0.30 and 0.70.
  4. 4. A punching sheet (110) according to claim 3, characterized in that d1:d2 is between 0.40 and 0.60.
  5. 5. The die (110) recited in claim 4, wherein d1:d2 is 0.50.
  6. 6. The die (110) of any of claims 2 to 5, wherein the recess is an annular recess.
  7. 7. The die (110) recited in claim 6, wherein the annular recess has an inner diameter dimension N1, and the die (110) has an outer diameter dimension N2, N1: N2 being between 0.40 and 0.65.
  8. 8. The die (110) recited in claim 6, wherein the annular recess has an outer diameter dimension N3, the die (110) having an outer diameter dimension N2, N3: N2 being between 0.70 and 0.90.
  9. 9. The die (110) recited in claim 1, wherein the magnetism isolating portion (C1) is a magnetism isolating material.
  10. 10. The die (110) recited in claim 9, wherein the magnetically isolated material comprises at least one of neodymium-iron-boron, samarium-cobalt material.
  11. 11. The die (110) of claim 1, wherein the die (110) comprises: a first punching body (111) having a tubular shape; The first bulge (112), along the first radial protrusion of first towards piece body (111) set up in first towards piece body (111), first bulge (112) deviate from the edge of first towards piece body (111) is first outward flange (B1), separate magnetic part (C1) set up in outer terminal surface (A1) of first bulge (112), first outward flange (B1) include the crossing wall of two at least extending direction.
  12. 12. The die (110) recited in claim 11, wherein the first projection (112) further includes an inner end surface (A2) disposed opposite the outer end surface (A1), the first outer edge (B1) being connected between the outer end surface (A1) and the inner end surface (A2), the first outer edge (B1) being disposed protruding from the outer end surface (A1) and the inner end surface (A2) along the first radial direction.
  13. 13. The die (110) recited in claim 12, wherein the die (110) further comprises a first extension (113), the first extension (113) being convexly disposed at the inner end face (A2).
  14. 14. The die (110) recited in claim 13, wherein a wall surface of the first extension (113) disposed near the first outer edge (B1) is a first wall (E1), a wall surface of the first outer edge (B1) connected to the inner end surface (A2) is a second wall (B11), and the first wall (E1) is disposed in alignment with the second wall (B11).
  15. 15. The die (110) recited in claim 14, wherein a wall surface of the first outer edge (B1) connected to the outer end surface (A1) is a third wall (B12), the third wall (B12) being connected to the second wall (B11), the first wall (E1) and the third wall (B12) being symmetrical to each other.
  16. 16. The die (110) recited in claim 11, wherein the first outer edge (B1) of the first projection (112) is recessed inwardly to form a first wire-passing slot (1121).
  17. 17. The die (110) recited in claim 16, wherein the first wire-passing slots (1121) are plural in number and are spaced apart from one another.
  18. 18. The die (110) recited in claim 11, wherein the die (110) further comprises a limiting portion (1111), the limiting portion (1111) being provided protruding from an inner wall of the first die body (111).
  19. 19. A stator core (100) comprising a first sheet (110), the first sheet (110) being the sheet (110) of any one of claims 1 to 18.
  20. 20. The stator core (100) of claim 19, wherein the stator core (100) further comprises a second punch (110), the second punch (110) being located on a side of the outer end face (A1) facing away from the first punch (110), the second punch (110) being a punch (110) according to any one of claims 1 to 16, a surface of the second punch (110) facing away from the first punch (110) forming the outer end face (A1) of the second punch (110).

Description

Punching sheet, stator core, stator, actuator, suspension system and vehicle Technical Field The invention relates to the technical field of vehicles, in particular to a punching sheet, a stator core, a stator, an actuator, a suspension system and a vehicle. Background An actuator is a device that converts energy into mechanical motion. It plays a critical role in various engineering and control systems for performing specific mechanical actions. However, in the related art, the magnetic flux leakage phenomenon of the actuator is serious in operation. Disclosure of Invention The invention aims to provide a punching sheet, a stator core, a stator, an actuator, a suspension system and a vehicle, and aims to solve the problem that the magnetic leakage phenomenon of the actuator is serious when the actuator works. In order to achieve the above purpose, the invention adopts the following technical scheme: The embodiment of the application provides a punching sheet which is used for the end part of a stator core. The outer end face of the punching sheet is provided with a magnetism isolating part which is arranged at intervals with the first outer edge of the punching sheet. According to the punching sheet provided by the embodiment of the application, through the arrangement of the magnetism isolating part, the magnetism isolating part has a blocking effect on magnetic lines, so that the magnetic lines of force at the outer end face of the punching sheet can enter the punching sheet from the punching sheet between the magnetism isolating part and the first outer edge to a greater extent, thereby shortening the running path of the magnetic lines of force from the mover to the outer end face, reducing the running path of the magnetic lines of force in an air medium, reducing the loss of the magnetic lines of force in the air medium, reducing the probability of magnetic leakage, improving the effective magnetic flux, improving the proportion of the magnetic lines of force for generating electromagnetic thrust, improving the efficiency of an actuator, reducing the probability of converting the energy of the magnetic lines of force into heat energy, reducing the energy loss of the actuator, reducing the interference of the magnetic lines of force on the whole magnetic field of the actuator, reducing the mutual coupling effect between magnetic steels of the mover of the actuator, and reducing the electromagnetic interference of the magnetic lines of force on surrounding electronic equipment, and reducing the probability of electromagnetic distortion. In some embodiments, the magnetism isolating portion includes a concave portion recessed from the outer end surface toward the inside of the punching sheet. According to the punching sheet provided by the embodiment of the application, the magnetism isolating part comprises the concave part, and the concave part is filled with the air medium, so that the magnetic force line can be blocked, and the implementation mode is simple and effective. In some embodiments, the recess has a thickness dimension D1, the punch has a thickness dimension D2, and the D1:D2 is between 0.30 and 0.70. According to the punching sheet provided by the embodiment of the application, the concave part can ensure good magnetism isolating effect and higher strength through setting the ratio of D1 to D2. In some embodiments, D1:D2 is between 0.40 and 0.60. According to the punching sheet provided by the embodiment of the application, the concave part can ensure a better magnetism isolating effect and high strength through setting the ratio of D1 to D2. In some embodiments, D1:D2 is 0.50. According to the punching sheet provided by the embodiment of the application, through setting of the ratio of D1 to D2, the magnetism isolating effect of the concave part can be ensured, and the punching sheet is convenient to prepare and is not easy to damage. In some embodiments, the recess is an annular recess. According to the punching sheet provided by the embodiment of the application, the concave part is the annular concave part, so that magnetism isolation in all directions in the circumferential direction can be realized, the magnetic leakage probability is further reduced, and the preparation process of the annular concave part is simple. In some embodiments, the annular recess has an inner diameter dimension N1, the punch has an outer diameter dimension N2, and N1: N2 is between 0.40 and 0.65. According to the punching sheet provided by the embodiment of the application, through the arrangement, the strength of the punching sheet can be ensured, and the concave part can have a good magnetism isolating effect. In some embodiments, the annular recess has an outer diameter dimension N3, the punch has an outer diameter dimension N2, and the N3:N2 is between 0.70 and 0.90. According to the punching sheet provided by the embodiment of the application, through the arrangement, the strength of the punching sheet c