CN209896789U - Rotor punching sheet of permanent magnet synchronous motor - Google Patents
Rotor punching sheet of permanent magnet synchronous motor Download PDFInfo
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- CN209896789U CN209896789U CN201920804791.1U CN201920804791U CN209896789U CN 209896789 U CN209896789 U CN 209896789U CN 201920804791 U CN201920804791 U CN 201920804791U CN 209896789 U CN209896789 U CN 209896789U
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Abstract
The utility model discloses a permanent magnet synchronous motor rotor punching sheet, which comprises a punching sheet body, wherein a plurality of magnetic steel groove groups are uniformly arranged on the punching sheet body along the circumferential direction of the punching sheet body, each magnetic steel groove group consists of two magnetic steel grooves which are arranged in a V shape, and the two magnetic steel grooves are respectively a first magnetic steel groove and a second magnetic steel groove; the punching sheet body is provided with a plurality of punching sheet groove groups on the peripheral edge, each punching sheet groove group comprises a first auxiliary groove and a second auxiliary groove, the first auxiliary groove of each punching sheet groove group is respectively arranged corresponding to the second end of the first magnetic steel groove in each magnetic steel groove group, and the second auxiliary groove of each punching sheet groove group is respectively arranged corresponding to the second end of the second magnetic steel groove in each magnetic steel groove group; two third auxiliary grooves and two fourth auxiliary grooves are arranged between the first auxiliary groove and the second auxiliary groove in each punching sheet groove group on the peripheral edge of the punching sheet body. The utility model discloses a set up the auxiliary tank, can reduce the tooth's socket torque of motor, noise reduction, can also make the temperature rise reduce.
Description
Technical Field
The utility model relates to a permanent magnet synchronous motor's for new forms of energy electric automobile technical field especially relates to a permanent magnet synchronous motor rotor punching.
Background
The driving motor used by the new energy electric automobile generally needs to be started and stopped frequently, bears larger acceleration and deceleration, requires low-speed large-torque climbing, high-speed small-torque operation and wide operation speed range, is limited by vehicle space, and has the characteristics of large power density and higher efficiency in order to reduce the dead weight of the vehicle and improve the requirement of the effective load of the vehicle.
In the prior art, the permanent magnet synchronous motor for the electric automobile has the characteristics of high efficiency, high power factor and the like, and is also accepted in the industry. In order to improve the performance of the whole vehicle, more and more whole vehicle factories or host factories put forward higher requirements on the noise and temperature rise of the driving motor, and especially put forward higher requirements on the aspects of the noise, temperature rise, torque fluctuation and the like of the driving motor when the whole vehicle is started, stopped and climbs.
Therefore, research and development of a rotor punching sheet of a permanent magnet synchronous motor for reducing motor noise and torque fluctuation are a problem to be researched urgently.
Disclosure of Invention
The utility model provides a can reduce motor noise, reduce the undulant PMSM rotor punching of torque.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a permanent magnet synchronous motor rotor punching sheet comprises a punching sheet body, wherein a plurality of magnetic steel groove groups for accommodating magnetic steel are uniformly arranged on the punching sheet body along the circumferential direction of the punching sheet body, each magnetic steel groove group is composed of two magnetic steel grooves which are arranged in a V shape, the two magnetic steel grooves are respectively a first magnetic steel groove and a second magnetic steel groove, the V shape is provided with an opening, the opening faces to the outer edge of the punching sheet body, and each magnetic steel groove is provided with a first end close to the center of the punching sheet body and a second end close to the outer edge of the punching sheet body;
a plurality of punching sheet groove groups corresponding to the magnetic steel groove groups are arranged on the peripheral edge of the punching sheet body, each punching sheet groove group comprises a first auxiliary groove and a second auxiliary groove, the first auxiliary groove of each punching sheet groove group is respectively arranged corresponding to the second end of the first magnetic steel groove in each magnetic steel groove group, and the second auxiliary groove of each punching sheet groove group is respectively arranged corresponding to the second end of the second magnetic steel groove in each magnetic steel groove group;
two third auxiliary grooves and two fourth auxiliary grooves are arranged on the peripheral edge of the punching sheet body and between the first auxiliary groove and the second auxiliary groove in each punching sheet groove group, wherein the two third auxiliary grooves and the two fourth auxiliary grooves are symmetrically arranged along the symmetry line of the V shape, and the two fourth auxiliary grooves are arranged between the two third auxiliary grooves.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the first auxiliary groove and the second auxiliary groove are both arc grooves.
2. In the scheme, an included angle formed between the circle center of the first auxiliary groove and the circle center of the second auxiliary groove in each punching sheet groove group along the circumferential direction of the punching sheet body is an acute angle.
3. In the above scheme, the third auxiliary groove and the fourth auxiliary groove are both arc grooves.
4. In the above scheme, the first auxiliary groove, the second auxiliary groove, the third auxiliary groove and the fourth auxiliary groove of the punching sheet body are all arc grooves, and the circle centers of the arc grooves are all located on a reference circle with the same diameter.
5. In the scheme, the punching sheet body is uniformly provided with a plurality of weight removing holes along the circumferential direction of the punching sheet body.
6. In the scheme, a plurality of riveting holes are formed in the punching sheet body along the circumferential direction of the punching sheet body.
7. In the scheme, the punching sheet body is provided with a through hole in the center, and at least one key groove is formed in the inner wall of the through hole.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the auxiliary grooves are arranged on the rotor punching sheets, so that air gaps between the stator and rotor cores of the motor are uneven, on one hand, the resistance borne by the rotor during rotation is smaller under the condition of power failure of the motor, namely, the cogging torque of the motor is reduced, the torque fluctuation, the vibration and the like are also obviously improved, and meanwhile, the noise of the motor can be reduced; on the other hand, the structure can offset harmonic components of the stator teeth, reduce eddy current loss of the rotor and further reduce temperature rise.
Drawings
FIG. 1 is a schematic structural diagram of a rotor sheet of a permanent magnet synchronous motor;
fig. 2 is a partially enlarged view of a in fig. 1.
In the above drawings: 10. punching a sheet body; 11. a first magnetic steel slot; 12. a second magnetic steel slot; 13. a first auxiliary groove; 14. a second auxiliary groove; 15. a third auxiliary groove; 16. a fourth auxiliary groove; 17. removing heavy holes; 18. riveting holes; 19. a through hole; 20. a keyway.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b):
a permanent magnet synchronous motor rotor punching sheet is shown in figures 1 and 2 and comprises a punching sheet body 10, a plurality of magnetic steel groove groups for placing magnetic steel are uniformly arranged on the punching sheet body 10 along the circumferential direction thereof, the number of the magnetic steel groove groups is known by those skilled in the art, optionally, the number of the magnetic steel slot groups can be set to 12, certainly, the number of the magnetic steel slot groups can be changed, each magnetic steel slot group is composed of two magnetic steel slots arranged in a V shape, the two magnetic steel slots are respectively a first magnetic steel slot 11 and a second magnetic steel slot 12, the V shape has an opening, the opening faces the outer edge of the stamping sheet body 10, the V shape is provided with a symmetry line L, two magnetic steel grooves are symmetrically arranged on two sides of the symmetry line L, and each magnetic steel groove is provided with a first end close to the center of the stamping sheet body 10 and a second end close to the outer edge of the stamping sheet body 10;
a plurality of punching sheet groove groups corresponding to the magnetic steel groove groups are arranged on the peripheral edge of the punching sheet body 10, each punching sheet groove group comprises a first auxiliary groove 13 and a second auxiliary groove 14, the first auxiliary groove 13 of each punching sheet groove group is respectively arranged corresponding to the second end of the first magnetic steel groove 11 in each magnetic steel groove group, and the second auxiliary groove 14 of each punching sheet groove group is respectively arranged corresponding to the second end of the second magnetic steel groove 12 in each magnetic steel groove group;
two third auxiliary grooves 15 and two fourth auxiliary grooves 16 are arranged on the peripheral edge of the punching sheet body 10 and between the first auxiliary groove 13 and the second auxiliary groove 14 in each punching sheet groove group, wherein the two third auxiliary grooves 15 and the two fourth auxiliary grooves 16 are symmetrically arranged according to the V-shaped symmetry line, namely, the two third auxiliary grooves 15 are symmetrically arranged on two sides of the V-shaped symmetry line L, the two fourth auxiliary grooves 16 are symmetrically arranged on two sides of the V-shaped symmetry line L, and the two fourth auxiliary grooves 16 are arranged between the two third auxiliary grooves 15.
In the embodiment, the auxiliary grooves are arranged on the rotor punching sheet, so that the air gap between the stator and rotor iron cores of the motor is uneven, on one hand, the resistance borne by the rotor during rotation is smaller under the condition of power failure of the motor, namely, the cogging torque of the motor is reduced, the torque fluctuation, the vibration and the like are also obviously improved, and meanwhile, the noise of the motor can be reduced; on the other hand, the structure can offset harmonic components of the stator teeth, reduce eddy current loss of the rotor and further reduce temperature rise.
Preferably, referring to fig. 1 and 2, the first auxiliary groove 13 and the second auxiliary groove 14 are both arc grooves.
In other embodiments, preferably, referring to fig. 1 and fig. 2, an included angle formed between a circle center of the first auxiliary groove 13 and a circle center of the second auxiliary groove 14 in each punching sheet groove group along the circumferential direction of the punching sheet body 10 is an acute angle, preferably, the included angle may be 21.8 degrees, although the included angle is not necessarily a unique determined value, and may also be changed according to different design schemes, and further, an included angle formed between a circle center of the first auxiliary groove 13 and a circle center of the second auxiliary groove 14 in each magnetic steel groove group along the circumferential direction of the punching sheet body 10 refers to an acute angle formed between a line K1 connecting the circle center of the first auxiliary groove 13 in each magnetic steel groove group and the circle center of the punching sheet body 10 and a line K2 connecting the circle center of the second auxiliary groove 14 and the circle center of the punching sheet body 10.
Preferably, referring to fig. 1 and 2, the third auxiliary groove 15 and the fourth auxiliary groove 16 are both arc grooves.
Preferably, referring to fig. 1 and fig. 2, the first auxiliary groove 13, the second auxiliary groove 14, the third auxiliary groove 15, and the fourth auxiliary groove 16 of the stamping sheet body 10 are all arc grooves, and the centers of the arc grooves all fall on a reference circle with the same diameter.
Preferably, referring to fig. 1 and fig. 2, a plurality of weight-removing holes 17 are uniformly formed in the punching sheet body 10 along the circumferential direction thereof.
This embodiment can alleviate rotor punching and rotor weight through setting up the heavy hole that goes.
Preferably, referring to fig. 1 and fig. 2, the punching sheet body 10 is provided with a plurality of riveting holes 18 along the circumferential direction thereof.
This embodiment is through setting up the riveting hole, and the connection between the rotor punching of being convenient for is fixed.
Preferably, as shown in fig. 1 and fig. 2, a through hole 19 is formed in the center of the punching sheet body 10, at least one key groove 20 is formed in the inner wall of the through hole 19, and optionally, the number of the key grooves may be 3, 2 or 1, and specifically, the key grooves may be arranged as required.
This embodiment is convenient for realize the key with the axle and link through setting up the keyway, and the structure is reliable stable.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (8)
1. A permanent magnet synchronous motor rotor punching sheet comprises a punching sheet body (10), wherein a plurality of magnetic steel groove groups for accommodating magnetic steel are uniformly arranged on the punching sheet body (10) along the circumferential direction of the punching sheet body, each magnetic steel groove group is composed of two magnetic steel grooves which are arranged in a V shape, the two magnetic steel grooves are respectively a first magnetic steel groove (11) and a second magnetic steel groove (12), the V shape is provided with an opening, the opening faces to the outer edge of the punching sheet body (10), and each magnetic steel groove is provided with a first end close to the center of the punching sheet body (10) and a second end close to the outer edge of the punching sheet body (10); the method is characterized in that:
a plurality of punching sheet groove groups corresponding to the magnetic steel groove groups are arranged on the peripheral edge of the punching sheet body (10), each punching sheet groove group comprises a first auxiliary groove (13) and a second auxiliary groove (14), the first auxiliary groove (13) of each punching sheet groove group is respectively arranged corresponding to the second end of the first magnetic steel groove (11) in each magnetic steel groove group, and the second auxiliary groove (14) of each punching sheet groove group is respectively arranged corresponding to the second end of the second magnetic steel groove (12) in each magnetic steel groove group;
two third auxiliary grooves (15) and two fourth auxiliary grooves (16) are arranged on the peripheral edge of the punching sheet body (10) and between the first auxiliary groove (13) and the second auxiliary groove (14) in each punching sheet groove group, wherein the two third auxiliary grooves (15) and the two fourth auxiliary grooves (16) are symmetrically arranged along the symmetry line of the V shape, and the two fourth auxiliary grooves (16) are arranged between the two third auxiliary grooves (15).
2. The rotor punching sheet of the permanent magnet synchronous motor as recited in claim 1, characterized in that: the first auxiliary groove (13) and the second auxiliary groove (14) are both arc grooves.
3. The rotor sheet of the permanent magnet synchronous motor according to claim 2, characterized in that: an included angle formed between the circle center of the first auxiliary groove (13) and the circle center of the second auxiliary groove (14) in each punching sheet groove group along the circumferential direction of the punching sheet body (10) is an acute angle.
4. The rotor punching sheet of the permanent magnet synchronous motor as recited in claim 1, characterized in that: the third auxiliary groove (15) and the fourth auxiliary groove (16) are both arc grooves.
5. The rotor punching sheet of the permanent magnet synchronous motor as recited in claim 1, characterized in that: the first auxiliary groove (13), the second auxiliary groove (14), the third auxiliary groove (15) and the fourth auxiliary groove (16) of the punching sheet body (10) are all arc grooves, and the circle centers of the arc grooves are all located on a reference circle with the same diameter.
6. The rotor punching sheet of the permanent magnet synchronous motor as recited in claim 1, characterized in that: a plurality of weight removing holes (17) are uniformly formed in the punching sheet body (10) along the circumferential direction of the punching sheet body.
7. The rotor punching sheet of the permanent magnet synchronous motor as recited in claim 1, characterized in that: a plurality of riveting holes (18) are formed in the punching sheet body (10) along the circumferential direction of the punching sheet body.
8. The rotor punching sheet of the permanent magnet synchronous motor as recited in claim 1, characterized in that: the punching sheet is characterized in that a through hole (19) is formed in the center of the punching sheet body (10), and at least one key groove (20) is formed in the inner wall of the through hole (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804791.1U CN209896789U (en) | 2019-05-30 | 2019-05-30 | Rotor punching sheet of permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920804791.1U CN209896789U (en) | 2019-05-30 | 2019-05-30 | Rotor punching sheet of permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209896789U true CN209896789U (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920804791.1U Active CN209896789U (en) | 2019-05-30 | 2019-05-30 | Rotor punching sheet of permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209896789U (en) |
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2019
- 2019-05-30 CN CN201920804791.1U patent/CN209896789U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No.608, FanFeng Road, Xukou Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: SUZHOU LEGO MOTORS Co.,Ltd. Address before: Xu Kou Zhen He Feng Cun He Feng Lu, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU LEGO MOTORS Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |