CN-224218163-U - High-power-density rotor punching structure, motor and vehicle

CN224218163UCN 224218163 UCN224218163 UCN 224218163UCN-224218163-U

Abstract

The utility model discloses a high-power-density rotor punching sheet structure, a motor and a vehicle, wherein the high-power-density rotor punching sheet structure comprises a punching sheet body, a plurality of magnetic pole units are arranged on the punching sheet body along the circumferential direction, a first magnetic steel groove group, a second magnetic steel groove group and a third magnetic steel groove group are arranged on each magnetic pole unit, the first magnetic steel groove group, the second magnetic steel groove group and the third magnetic steel groove group are sequentially arranged from outside to inside in the radial direction of the punching sheet body, the first magnetic steel groove group is in a V shape or a one shape, and the second magnetic steel groove group and the third magnetic steel groove group are in a V shape. The utility model can effectively improve the output power in the full rotation speed section, and achieve the aim of outputting higher torque power performance with smaller weight and lower material cost.

Inventors

TAN MINGQI
SU LING
MI ZEYIN

Assignees

辰致汽车科技集团有限公司重庆创新研究分公司
辰致汽车科技集团有限公司

Dates

Publication Date: 20260508
Application Date: 20250208

Claims (10)

1. A high-power-density rotor punching structure is characterized by comprising a punching body, wherein a plurality of magnetic pole units are arranged on the punching body along the circumferential direction, a first magnetic steel groove group (1), a second magnetic steel groove group (2) and a third magnetic steel groove group (3) are arranged on each magnetic pole unit, the first magnetic steel groove group (1), the second magnetic steel groove group (2) and the third magnetic steel groove group (3) are sequentially arranged from outside to inside in the radial direction of the punching body, the first magnetic steel groove group (1) is in a V shape or a one shape, and the second magnetic steel groove group (2) and the third magnetic steel groove group (3) are in a V shape.
2. The high-power-density rotor punching structure of claim 1, wherein the number of the magnetic pole units is N, the punching body is provided with a circle center, the included angles between two end points of the first magnetic steel groove group (1) in the circumferential direction of the punching body and the circle center are alpha, the included angles between two end points of the second magnetic steel groove group (2) in the circumferential direction of the punching body and the circle center are beta, the included angles between two end points of the third magnetic steel groove group (3) in the circumferential direction of the punching body and the circle center are gamma, , 。
3. The high-power-density rotor punching structure according to claim 1 or 2, wherein the included angle of the first magnetic steel groove group (1) is 180 degrees when the first magnetic steel groove group is in a straight shape, the included angle of the first magnetic steel groove group (1) is phi 1 when the first magnetic steel groove group is in a V shape, and the included angle of the first magnetic steel groove group is 150 degrees or less and phi 1 is less than 180.
4. The high-power-density rotor punching structure as set forth in claim 3, characterized in that the V-shaped included angle of the second magnetic steel groove group (2) is phi 2 , wherein phi 2 is 120 DEG or more and 150 DEG or less.
5. The high-power density rotor punching structure as set forth in claim 4, characterized in that said third magnetic steel groove set (3) has a V-shaped included angle phi 3 , wherein phi 3 is 80 DEG or more and 120 DEG or less.
6. The high-power-density rotor punching structure of claim 1, wherein the first magnetic steel groove group (1) comprises two first magnetic steel grooves, one permanent magnet (4) is respectively arranged in the two first magnetic steel grooves, a one-shaped magnetism isolating bridge is arranged between the two first magnetic steel grooves, or no magnetism isolating bridge is arranged between the two first magnetic steel grooves.
7. The high-power-density rotor punching structure of claim 6, wherein the second magnetic steel groove group (2) comprises two second magnetic steel grooves, one permanent magnet (4) is respectively arranged in the two second magnetic steel grooves, and a magnetism isolating bridge in a straight shape or an eight shape is arranged between the two second magnetic steel grooves.
8. The high-power-density rotor punching structure of claim 7, wherein the third magnetic steel groove group (3) comprises two third magnetic steel grooves, one permanent magnet (4) is respectively arranged in the two third magnetic steel grooves, and a magnetism isolating bridge in a straight shape or an eight shape is arranged between the two third magnetic steel grooves.
9. An electric machine comprising a high power density rotor lamination as defined in any one of claims 1 to 8.
10. A vehicle comprising an electric machine according to claim 9.

Description

High-power-density rotor punching structure, motor and vehicle Technical Field The utility model relates to a new energy automobile, in particular to a high-power-density rotor punching structure, a motor and a vehicle. Background The driving motor system serves as the core of the new energy automobile, and along with the technical iteration updating, the light weight index of the driving motor occupies an important position, and for the whole automobile, the driving motor occupies a compact space in arrangement space, has lighter weight and can greatly improve the competitiveness of the product on the premise of keeping the advanced performance index. In the prior art, most of permanent magnet rotor components of a driving motor adopt single-layer magnetic steel (including single V-shaped and single-line-shaped) and double-layer magnetic steel (including V+one-shaped and double V-shaped and U+one-shaped), under the premise that input voltage and input current are the same, the output power of the 5 permanent magnet rotors cannot reach the maximum power which is closer to theoretical output due to the limitation of rotor structures of arrangement of the respective magnetic steels, and a small part of structures such as double V can improve the output power under the condition of greatly improving electromagnetic materials, but the cost and the volume weight of the motor are increased. Disclosure of utility model In view of the above, the present utility model aims to provide a high power density rotor punching structure, a motor and a vehicle, which can effectively improve output power in a full rotation speed section, and achieve higher torque power performance with smaller weight and lower material cost. The high-power-density rotor punching sheet structure comprises a punching sheet body, wherein a plurality of magnetic pole units are arranged on the punching sheet body along the circumferential direction, a first magnetic steel groove group, a second magnetic steel groove group and a third magnetic steel groove group are arranged on each magnetic pole unit, the first magnetic steel groove group, the second magnetic steel groove group and the third magnetic steel groove group are sequentially arranged from outside to inside in the radial direction of the punching sheet body, the first magnetic steel groove group is in a V shape or a straight shape, and the second magnetic steel groove group and the third magnetic steel groove group are in a V shape. The number of the magnetic pole units is N, the punching sheet body is provided with a circle center, the included angle between two end points of the first magnetic steel groove group in the circumferential direction of the punching sheet body and the circle center is alpha, the included angle between two end points of the second magnetic steel groove group in the circumferential direction of the punching sheet body and the circle center is beta, the included angle between two end points of the third magnetic steel groove group in the circumferential direction of the punching sheet body and the circle center is gamma, Further, when the first magnetic steel groove group is in a straight shape, the included angle is 180 degrees, and when the first magnetic steel groove group is in a V shape, the V-shaped included angle is phi 1, wherein the included angle is 150 degrees or less and phi 1 is less than 180 degrees. Further, the V-shaped included angle of the second magnetic steel groove group is phi 2, wherein phi 2 is more than or equal to 120 degrees and less than or equal to 150 degrees. Further, the V-shaped included angle of the third magnetic steel groove group is phi 3, wherein phi 3 is more than or equal to 80 degrees and less than or equal to 120 degrees. Further, the first magnetic steel groove group comprises two first magnetic steel grooves, a permanent magnet is respectively arranged in the two first magnetic steel grooves, a one-shaped magnetism isolating bridge is arranged between the two first magnetic steel grooves, or a magnetism isolating bridge is not arranged between the two first magnetic steel grooves. Further, the second magnetic steel groove group comprises two second magnetic steel grooves, a permanent magnet is respectively arranged in the two second magnetic steel grooves, and a linear or eight-shaped magnetism isolating bridge is arranged between the two second magnetic steel grooves. Further, the third magnetic steel groove group comprises two third magnetic steel grooves, a permanent magnet is respectively arranged in the two third magnetic steel grooves, and a linear or eight-shaped magnetism isolating bridge is arranged between the two third magnetic steel grooves. The motor comprises the high-power-density rotor punching structure. In one type of vehicle in accordance with the present utility model, the motor is included. The rotor punching sheet has the beneficial effects that the magnetic steel of the rotor punching sheet adop