CN212849999U - Stator and rotor punching sheet of permanent magnet synchronous motor - Google Patents
Stator and rotor punching sheet of permanent magnet synchronous motor Download PDFInfo
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- CN212849999U CN212849999U CN202021875735.6U CN202021875735U CN212849999U CN 212849999 U CN212849999 U CN 212849999U CN 202021875735 U CN202021875735 U CN 202021875735U CN 212849999 U CN212849999 U CN 212849999U
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Abstract
The utility model discloses a PMSM's stator-rotor punching belongs to PMSM technical field, has solved current DC brushless motor and PMSM and has that tooth's socket torque is big, the noise is high and the problem of inefficiency, and its technical essential is: including stator punching and rotor punching, stator punching inboard rotates and is equipped with the rotor punching, evenly be equipped with a plurality of tooth's socket in the stator punching, rotor punching central point puts the department and is equipped with the shaft hole, the shaft hole periphery evenly is provided with a plurality of magnet steel groove, magnet steel groove outer disc department is equipped with inhomogeneous air gap, utilizes inhomogeneous air gap, can carry out beneficial improvement to magnetic field waveform for magnetic field forms approximate sinusoidal wave's magnetic field in the air gap, effectively reduces various harmonic magnetic fields, can reduce the motor noise, and simultaneously, reduces the loss that arouses by the harmonic, improves motor efficiency, and also reduced tooth's socket torque and torque ripple, have effectively fall make an uproar, steady operation and the advantage of raising the efficiency.
Description
Technical Field
The utility model relates to a PMSM technical field specifically is a stator-rotor punching sheet that relates to a PMSM.
Background
The direct current brushless motor and the permanent magnet synchronous motor that the tricycle trade was joined in marriage all have the tooth's socket torque big at present, the noise is high, inefficiency, along with the electric motor car trade speed of a fire development in recent years, and the experience of driving the whole car is experienced and is higher and higher, and under such a background, how to reduce the motor noise, operate steadily, efficient become the current main problem that faces. Therefore, the existing direct current brushless motor and the existing permanent magnet synchronous motor have the defects of large cogging torque, high noise and low efficiency, and are difficult to popularize and apply.
Therefore, it is desirable to provide a stator/rotor punching sheet of a permanent magnet synchronous motor, which aims to solve the above problems.
Disclosure of Invention
An it is not enough to prior art exist, the utility model provides a permanent magnet synchronous motor's stator-rotor punching to solve the problem among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a PMSM's stator-rotor punching, includes stator punching and rotor punching, stator punching inboard rotates and is equipped with the rotor punching, evenly be equipped with a plurality of tooth's socket in the stator punching, rotor punching central point department of putting is equipped with the shaft hole, the shaft hole periphery evenly is provided with a plurality of magnet steel groove, the outer disc department in magnet steel groove is equipped with inhomogeneous air gap, utilizes inhomogeneous air gap, can carry out beneficial improvement to magnetic field waveform for magnetic field forms approximate sinusoidal wave's magnetic field in the air gap, can effectively reduce various harmonic magnetic fields, can reduce the motor noise, simultaneously, can reduce the loss that arouses by the harmonic, improves motor efficiency, and also reduced tooth's socket torque and torque ripple.
As a further proposal of the utility model, the stator punching sheet external diameter A is between 127 and 129mm, the rotor punching sheet external diameter is between 75-77mm, and the tooth width B between the adjacent tooth grooves is between 10.4-11mm, thereby facilitating the matching use between the stator punching sheet and the rotor punching sheet.
As the utility model discloses further scheme, stator punching and rotor punching use of mutually supporting, the tooth's socket is provided with 12, the magnet steel groove is provided with 10.
As a further proposal of the utility model, the width D of the magnetic steel groove is between 18.5 and 19.5 mm.
As a further proposal of the utility model, the distance G between the magnetic steel groove and the center of the shaft hole is between 32.4 and 33.2 mm.
As a further proposal of the utility model, the magnetic circuit H between the adjacent magnetic steel grooves is between 0.8 and 2 mm.
As a further aspect of the present invention, the uneven air gap is respectively composed of a plurality of first arcs and second arcs, the first arc radius E is between 26.5-27.2mm, the second arc radius I is between 6-6.5mm, the first arc included angle J is between 30 ° -33 °, and the distance C between the center of the first arc and the center of the shaft hole is between 10.8-11.6 mm.
To sum up, compared with the prior art, the embodiment of the utility model has the following beneficial effects:
the utility model discloses a rotor surface is equipped with inhomogeneous air gap and improves the magnetic field waveform for the permanent magnet magnetic field forms approximate sinusoidal magnetic field in the air gap, reduces various harmonic magnetic fields with this, reduces the motor noise, reduces the loss that arouses by the harmonic, has improved motor efficiency, and simultaneously also greatly reduced tooth's socket torque, the torque is undulant, possesses effectively to fall and makes an uproar, steady operation and the effect of raising the efficiency.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Reference numerals: 1-stator punching sheet, 2-rotor punching sheet, 3-shaft hole, 4-uneven air gap, 11-tooth space and 21-magnetic steel groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
Example 1
Referring to fig. 1, a stator-rotor punching sheet of a permanent magnet synchronous motor comprises a stator punching sheet 1 and a rotor punching sheet 2, wherein the rotor punching sheet 2 is arranged on the inner side of the stator punching sheet 1 in a rotating mode, a plurality of tooth grooves 11 are uniformly arranged in the stator punching sheet 1, a shaft hole 3 is arranged at the center position of the rotor punching sheet 2, a plurality of magnetic steel grooves 21 are uniformly arranged on the periphery of the shaft hole 3, an uneven air gap 4 is arranged on the outer circular surface of each magnetic steel groove 21, and by means of the uneven air gap 4, the waveform of a magnetic field can be beneficially improved, so that the magnetic field forms a magnetic field similar to a sine wave in the air gap, various harmonic magnetic fields can be effectively reduced, the noise of the motor can be reduced, meanwhile, the loss caused by harmonic waves can be reduced.
Preferably, in this embodiment, the outer diameter a of the stator lamination 1 is between 127 and 129mm, the outer diameter of the rotor lamination 2 is between 75 and 77mm, and the tooth width B between the adjacent tooth grooves 11 is between 10.4 and 11mm, so that the stator lamination 1 and the rotor lamination 2 can be conveniently used in a matched manner.
Preferably, in this embodiment, the stator punching sheet 1 and the rotor punching sheet 2 are used in cooperation with each other, 12 tooth grooves 11 are provided, and 10 magnetic steel grooves 21 are provided.
Preferably, in the present embodiment, the width D of the magnetic steel slot 21 is between 18.5 mm and 19.5 mm.
Preferably, in the embodiment, the distance G between the magnetic steel groove 21 and the center of the shaft hole 3 is between 32.4 and 33.2 mm.
Preferably, in the present embodiment, the magnetic path H between adjacent magnetic steel slots 21 is between 0.8 mm and 2 mm.
Example 2
Referring to fig. 1, in embodiment 1, a stator-rotor punching sheet of a permanent magnet synchronous motor includes a stator punching sheet 1 and a rotor punching sheet 2, the rotor punching sheet 2 is rotatably disposed on an inner side of the stator punching sheet 1, a plurality of tooth spaces 11 are uniformly disposed in the stator punching sheet 1, a shaft hole 3 is disposed at a center position of the rotor punching sheet 2, a plurality of magnetic steel slots 21 are uniformly disposed on a periphery of the shaft hole 3, and an uneven air gap 4 is disposed on an outer circumferential surface of each magnetic steel slot 21, so that a waveform of a magnetic field can be beneficially improved by using the uneven air gap 4, that is, a magnetic field is formed in the air gap to approximate a sine wave magnetic field, that can effectively reduce various harmonic magnetic fields, reduce noise of the motor, and simultaneously reduce loss caused by harmonic waves, improve efficiency of the motor, and reduce torque and torque.
Preferably, in this embodiment, the outer diameter a of the stator lamination 1 is between 127 and 129mm, the outer diameter of the rotor lamination 2 is between 75 and 77mm, and the tooth width B between the adjacent tooth grooves 11 is between 10.4 and 11mm, so that the stator lamination 1 and the rotor lamination 2 can be conveniently used in a matched manner.
Preferably, in this embodiment, the stator punching sheet 1 and the rotor punching sheet 2 are used in cooperation with each other, 12 tooth grooves 11 are provided, and 10 magnetic steel grooves 21 are provided.
Preferably, in the present embodiment, the width D of the magnetic steel slot 21 is between 18.5 mm and 19.5 mm.
Preferably, in the embodiment, the distance G between the magnetic steel groove 21 and the center of the shaft hole 3 is between 32.4 and 33.2 mm.
Preferably, in the present embodiment, the magnetic path H between adjacent magnetic steel slots 21 is between 0.8 mm and 2 mm.
Different from the embodiment 1, the uneven air gap 4 is respectively composed of a plurality of first circular arcs and second circular arcs, the radius E of each first circular arc is 26.5-27.2mm, the radius I of each second circular arc is 6-6.5mm, the included angle J of each first circular arc is 30-33 degrees, and the distance C between the center of each first circular arc and the center of the shaft hole 3 is 10.8-11.6 mm.
The rest of the structure of this example is the same as example 1.
The utility model discloses a theory of operation is:
by utilizing the uneven air gap 4, the magnetic field waveform can be improved beneficially, so that the magnetic field forms a magnetic field similar to a sine wave in the air gap, various harmonic magnetic fields can be effectively reduced, the noise of the motor can be reduced, meanwhile, the loss caused by harmonic waves can be reduced, the efficiency of the motor is improved, and the torque fluctuation of the tooth slot 11 are also reduced.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a PMSM's stator-rotor punching, includes stator punching (1) and rotor punching (2), stator punching (1) inboard is rotated and is equipped with rotor punching (2), its characterized in that, evenly be equipped with a plurality of tooth's socket (11) in stator punching (1), rotor punching (2) central point department of putting is equipped with shaft hole (3), shaft hole (3) periphery evenly is provided with a plurality of magnetism steel slot (21), disc department is equipped with inhomogeneous air gap (4) outside magnetism steel slot (21).
2. The stator and rotor punching sheet of the permanent magnet synchronous motor as recited in claim 1, wherein the outer diameter A of the stator punching sheet (1) is between 127 and 129mm, the outer diameter of the rotor punching sheet (2) is between 75 and 77mm, and the tooth width B between the adjacent tooth grooves (11) is between 10.4 and 11 mm.
3. The stator and rotor punching sheet of the permanent magnet synchronous motor according to claim 2, wherein the stator punching sheet (1) and the rotor punching sheet (2) are matched with each other, 12 tooth grooves (11) are provided, and 10 magnetic steel grooves (21) are provided.
4. The stator and rotor punching sheet of the permanent magnet synchronous motor according to claim 3, wherein the width D of the magnetic steel slot (21) is 18.5-19.5 mm.
5. The stator and rotor punching sheet of the permanent magnet synchronous motor according to claim 4, wherein the distance G between the magnetic steel groove (21) and the center of the shaft hole (3) is 32.4-33.2 mm.
6. The stator-rotor punching sheet of a permanent magnet synchronous motor according to claim 5, characterized in that a magnetic circuit H between adjacent magnetic steel slots (21) is between 0.8 and 2 mm.
7. The stator and rotor punching sheet of the permanent magnet synchronous motor according to claim 6, wherein the uneven air gap (4) is respectively composed of a plurality of first arcs and second arcs, the radius E of each first arc is 26.5-27.2mm, the radius I of each second arc is 6-6.5mm, the included angle J of each first arc is 30-33 degrees, and the distance C between the center of each first arc and the center of the shaft hole (3) is 10.8-11.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021875735.6U CN212849999U (en) | 2020-09-01 | 2020-09-01 | Stator and rotor punching sheet of permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021875735.6U CN212849999U (en) | 2020-09-01 | 2020-09-01 | Stator and rotor punching sheet of permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212849999U true CN212849999U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021875735.6U Active CN212849999U (en) | 2020-09-01 | 2020-09-01 | Stator and rotor punching sheet of permanent magnet synchronous motor |
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|---|---|
| CN (1) | CN212849999U (en) |
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2020
- 2020-09-01 CN CN202021875735.6U patent/CN212849999U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230612 Address after: Room 402, Building 12, No. 1158, Jiuting Central Road, Jiuting Town, Songjiang District, Shanghai, 2016 Patentee after: Shanghai Zhihui Technology Co.,Ltd. Address before: 201620 Room 101, building 12, 1158, Central Road, Songjiang high tech Industrial Park, Caohejing Development Zone, Songjiang District, Shanghai Patentee before: SHANGHAI ESSEWISE NEW ENERGY TECHNOLOGY CO.,LTD. |