CN217010474U - Permanent magnet synchronous motor rotor and permanent magnet synchronous motor - Google Patents
Permanent magnet synchronous motor rotor and permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN217010474U CN217010474U CN202220844539.5U CN202220844539U CN217010474U CN 217010474 U CN217010474 U CN 217010474U CN 202220844539 U CN202220844539 U CN 202220844539U CN 217010474 U CN217010474 U CN 217010474U
- Authority
- CN
- China
- Prior art keywords
- magnetic steel
- rotor
- steel groove
- permanent magnet
- synchronous motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a permanent magnet synchronous motor rotor which is characterized by comprising a rotor body formed by stacking a plurality of rotor sheets; the rotor punching sheet is provided with a plurality of magnetic steel groove groups which are arranged in the rotor punching sheet in a central symmetry manner; the magnetic steel groove group comprises a first magnetic steel groove and a second magnetic steel groove, the first magnetic steel groove and the second magnetic steel groove are arranged in a mirror symmetry mode, the first magnetic steel groove and the second magnetic steel groove are in a V-shaped structure, and an opening of the V-shaped structure faces the outer side of the rotor punching sheet; and a convex rib is arranged between the first magnetic steel groove and the second magnetic steel groove. The first magnetic steel groove and the second magnetic steel groove that the rotor punching of the permanent magnet synchronous motor rotor of this embodiment was seted up are V type symmetry setting, and this V type structure can reduce the influence of magnet steel groove to rotor punching mechanical properties, increases protruding muscle between two kinds of magnet steel grooves, can improve the bearing capacity of rotor punching, and then improves its mechanical properties.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a permanent magnet synchronous motor rotor and a permanent magnet synchronous motor.
Background
The rotor of the permanent magnet motor mostly adopts a laminated rotor structure, permanent magnets are installed in the rotor, a magnetic isolation bridge is usually required to be arranged between the permanent magnets, and the permanent magnets and the magnetic isolation bridge are required to be supported by rotor punching sheets forming the laminated rotor. The rotor punching sheet forming the laminated rotor is thin and provided with the magnetic steel grooves, the mechanical strength of the rotor punching sheet is limited, and the deformation is easy to occur in the assembling process, so that the quality of the motor is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a permanent magnet synchronous motor rotor and a permanent magnet synchronous motor, which improve the mechanical strength of a rotor punching sheet by a V-shaped magnetic steel groove group and a mode of increasing convex ribs, thereby improving the quality of the motor.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a permanent magnet synchronous motor rotor comprises a rotor body formed by stacking a plurality of rotor sheets;
the rotor punching sheet is provided with a plurality of magnetic steel groove groups, and the plurality of magnetic steel groove groups are arranged in the rotor punching sheet in a centrosymmetric manner;
the magnetic steel groove group comprises a first magnetic steel groove and a second magnetic steel groove, the first magnetic steel groove and the second magnetic steel groove are arranged in a mirror symmetry mode, the first magnetic steel groove and the second magnetic steel groove are V-shaped, and an opening of the V-shaped structure faces the outer side of the rotor punching sheet;
and a convex rib is arranged between the first magnetic steel groove and the second magnetic steel groove.
Furthermore, the convex rib is positioned at the bottom of the vacancy between the first magnetic steel groove and the second magnetic steel groove.
Furthermore, the width of the convex rib is 3-4mm, and the length is 5-6 mm.
Further, the included angle between the first magnetic steel groove and the second magnetic steel groove is 65-75 degrees.
Furthermore, the central point of a circle corresponding to the rotor punching sheet is a first central point, the outer edge of the rotor punching sheet corresponding to the magnetic steel groove group is an arc-shaped outer edge, and the central point of the arc-shaped outer edge is a second central point;
a spacing exists between the first center point and the second center point.
Furthermore, the diameter of a circle corresponding to the rotor punching sheet is larger than that of a circle where the arc-shaped outer edge is located.
Furthermore, a ventilation hole is formed between the first magnetic steel groove and the second magnetic steel groove.
Furthermore, the rotor punching sheet is also provided with a plurality of mounting holes, and the mounting holes are respectively positioned between two adjacent magnetic steel groove groups;
the mounting holes are arranged in a centrosymmetric manner;
and a shaft hole is formed in the center of the rotor punching sheet.
A permanent magnet synchronous motor comprises a stator and the permanent magnet synchronous motor rotor;
the stator is internally provided with a cavity for accommodating the rotor body, and the wire slot of the stator is a pear-shaped slot.
Furthermore, 36 wire grooves for accommodating windings are uniformly distributed in the circumferential direction of the stator, and the rotor body is provided with 8-pole permanent magnets.
The technical scheme provided by the utility model can have the following beneficial effects:
the first magnetic steel groove and the second magnetic steel groove which are formed in the rotor punching sheet of the permanent magnet synchronous motor rotor are symmetrically arranged in a V shape, the V-shaped structure can reduce the influence of the magnetic steel grooves on the mechanical performance of the rotor punching sheet, the convex rib is additionally arranged between the two magnetic steel grooves, the bearing capacity of the rotor punching sheet can be improved, and the mechanical performance of the rotor punching sheet is further improved.
Drawings
Fig. 1 is a schematic structural diagram of a rotor sheet according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a permanent magnet synchronous motor according to an embodiment of the present invention;
the rotor comprises a rotor body 01, a rotor punching sheet 1, a magnetic steel groove group 11, a first magnetic steel groove 12, a second magnetic steel groove 13, a convex rib 14, a first central point A, a second central point B, a vent hole 15, a mounting hole 16, a shaft hole 17 and a stator 02.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A permanent magnet synchronous motor rotor and a permanent magnet synchronous motor according to an embodiment of the present invention will be described with reference to fig. 1 to 2.
The embodiment provides a permanent magnet synchronous motor rotor, which comprises a rotor body 01 formed by stacking a plurality of rotor punching sheets 1;
the rotor punching sheet 1 is provided with a plurality of magnetic steel groove groups 11, and the plurality of magnetic steel groove groups 11 are arranged in the rotor punching sheet 1 in a central symmetry manner;
the magnetic steel slot group 11 comprises a first magnetic steel slot 12 and a second magnetic steel slot 13, the first magnetic steel slot 12 and the second magnetic steel slot 13 are arranged in a mirror symmetry mode, the first magnetic steel slot 12 and the second magnetic steel slot 13 are V-shaped, and the opening of the V-shaped structure faces the outer side of the rotor punching sheet 1;
and a convex rib 14 is arranged between the first magnetic steel groove 12 and the second magnetic steel groove 13.
The first magnetic steel groove 12 and the second magnetic steel groove 13 which are formed on the rotor punching sheet 11 of the permanent magnet synchronous motor rotor of the embodiment are symmetrically arranged in a V shape, the V-shaped structure can reduce the influence of the magnetic steel grooves on the mechanical performance of the rotor punching sheet 1, the convex rib 14 is additionally arranged between the two magnetic steel grooves, the bearing capacity of the rotor punching sheet 1 can be improved, and the mechanical performance of the rotor punching sheet is further improved.
The magnetic steel slot group 11 based on this embodiment is a plurality of groups, correspondingly, the number of the convex ribs 14 is a plurality of, and the plurality of convex ribs 14 are arranged in the rotor sheet 1 in a central symmetry manner, so that the mechanical performance of the rotor sheet 1 can be improved to a great extent.
The rib 14 of the present embodiment is a protrusion located between the first magnetic steel slot 12 and the second magnetic steel slot 13, and the rib 14 is formed synchronously when the magnetic steel slots are formed on the rotor sheet by punching. It will be appreciated that in some embodiments, the ribs are located at the edges of the first magnetic steel slot 12 and the second magnetic steel slot 13 and are the raised edges of the magnetic steel slots.
In order to reduce the influence of the convex rib 14 on the magnetic flux leakage of the magnetic steel, the convex rib 14 is located at the bottom of the empty position between the first magnetic steel groove 12 and the second magnetic steel groove 13. It should be noted that the bottoms of the first magnetic steel groove 12 and the second magnetic steel groove 13 refer to one ends of the first magnetic steel groove and the second magnetic steel groove close to the center of the rotor sheet 1, and the other ends of the first magnetic steel groove and the second magnetic steel groove close to the edge of the rotor sheet 1 are defined as tops. Moreover, because an included angle is formed between the two magnetic steel grooves, the bottom space between the two magnetic steel grooves is minimum, the mechanical performance of the rotor punching sheet 1 at the position is small, the convex rib 14 is additionally arranged at the position, the mechanical performance of the rotor punching sheet 1 can be effectively improved, and the influence on magnetic steel magnetic leakage can be reduced.
Preferably, the ribs 14 have a width of 3-4mm and a length of 5-6 mm. The convex rib 14 with the size can not only achieve the effect of increasing the mechanical strength of the rotor punching sheet 1, but also reduce the influence on magnetic steel magnetic leakage to the maximum extent.
Specifically, the included angle between the first magnetic steel groove 12 and the second magnetic steel groove 13 of the rotor sheet 1 of the present embodiment is 65 to 75 °, and the included angle range enables the two magnetic steel grooves to have a larger length, and the bottom ends of the magnetic steel grooves are closer to the center of the rotor sheet. Correspondingly, the rotor body 01 formed by stacking the rotor laminations 1 can be provided with larger magnetic steel, so that the utilization rate of the rotor laminations 1 is higher, and the power density of the rotor body 01 is improved. Preferably, the included angle is 70 °.
In order to make the motor operate more stably, the central point of a circle corresponding to the rotor punching sheet 1 is a first central point A, the outer edge of the rotor punching sheet 1 corresponding to the magnetic steel groove group 11 is an arc-shaped outer edge, and the central point of the arc-shaped outer edge is a second central point B; there is a spacing between the first and second centre points a and B. This just makes rotor body 01 realize the eccentricity design, can effectively eliminate the tooth's socket torque to make the operation of motor more steady, the torque ripple is littleer.
It can be understood that, because there is a distance between the circle center corresponding to the whole rotor lamination 1 and the circle center corresponding to the edge of the whole rotor lamination, then, the outer edge of the rotor lamination 1 is composed of a plurality of arc-shaped edges, and the plurality of arc-shaped edges are arranged in central symmetry, so that the outer edge of the rotor lamination 1 is roughly circular.
In order to make the structure of the rotor punching sheet 1 more reasonable, the diameter of the circle corresponding to the rotor punching sheet 1 is larger than that of the circle where the arc-shaped outer edge is located. An inward concave part is formed at the joint of two adjacent arc-shaped outer edges, so that the outer edge of the whole rotor punching sheet 1 is relatively smooth.
Preferably, the distance between the first central point A and the second central point B is 6-10mm, and the distance enables the rotor body 01 to better eliminate cogging torque and ensure that the structure of the rotor body 01 is more stable.
Preferably, a vent hole 15 is formed between the first magnetic steel groove 12 and the second magnetic steel groove 13. The ventilation holes 15 can accelerate the heat dissipation of the motor and prolong the service life of the motor; based on the setting of ventilation hole 15, reduced the weight of rotor 1, can reduce the inertia of motor, make the acceleration and deceleration reaction of motor faster, motor sensitivity is high. Preferably, the diameter of the vent hole 15 is larger than the width of the magnetic steel slot.
In order to position the plurality of rotor laminations 1, the rotor laminations 1 are further provided with a plurality of mounting holes 16, and the mounting holes 16 are respectively located between two adjacent magnetic steel slot groups 11; the plurality of mounting holes 16 are arranged in a central symmetry. The mounting holes 16 are used for entering and exiting the mounting rods to complete the stacking and positioning of the plurality of rotor sheets 1. Correspondingly, the center of the rotor punching sheet is provided with a shaft hole 17 so as to facilitate the installation of the rotating shaft.
The magnetic steel slot group 11 of the permanent magnet synchronous motor rotor of the embodiment is 8, the number of the vent holes 15 is 8, and the number of the mounting holes 16 is 4.
Correspondingly, the embodiment also provides a permanent magnet synchronous motor, which comprises a stator 02 and the rotor; a cavity for accommodating the rotor is arranged in the stator 02, and a wire slot 021 of the stator is a pear-shaped slot. 36 wire slots 021 for containing windings are uniformly distributed in the circumferential direction of the stator 02, and 8-pole permanent magnets are arranged on the rotor body 01.
Other constructions and operation of a rotor and a permanent magnet synchronous machine according to embodiments of the utility model are known to those skilled in the art and will not be described in detail here.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A permanent magnet synchronous motor rotor is characterized by comprising a rotor body formed by stacking a plurality of rotor punching sheets;
the rotor punching sheet is provided with a plurality of magnetic steel groove groups, and the plurality of magnetic steel groove groups are arranged in the rotor punching sheet in a centrosymmetric manner;
the magnetic steel groove group comprises a first magnetic steel groove and a second magnetic steel groove, the first magnetic steel groove and the second magnetic steel groove are arranged in a mirror symmetry mode, the first magnetic steel groove and the second magnetic steel groove are in a V-shaped structure, and an opening of the V-shaped structure faces the outer side of the rotor punching sheet;
and a convex rib is arranged between the first magnetic steel groove and the second magnetic steel groove.
2. The PMSM rotor of claim 1, wherein the ribs are located at the bottom of the void between the first and second magnetic steel slots.
3. The PMSM rotor according to claim 2, wherein the ribs are 3-4mm wide and 5-6mm long.
4. The PMSM rotor of claim 1, wherein the included angle of the first and second magnetic steel slots is 65-75 °.
5. The PMSM rotor according to claim 1, wherein the center point of the circle corresponding to the rotor sheet is a first center point, the outer edge of the rotor sheet corresponding to the magnetic steel groove group is an arc-shaped outer edge, and the center point of the arc-shaped outer edge is a second center point;
a spacing exists between the first center point and the second center point.
6. The rotor of the permanent magnet synchronous motor according to claim 5, wherein the diameter of a circle corresponding to the rotor punching sheet is larger than that of a circle where the arc-shaped outer edge is located.
7. The rotor of claim 1, wherein a vent hole is formed between the first magnetic steel slot and the second magnetic steel slot.
8. The permanent magnet synchronous motor rotor as claimed in claim 1, wherein the rotor sheet is further provided with a plurality of mounting holes, and the plurality of mounting holes are respectively located between two adjacent magnetic steel groove groups; the mounting holes are arranged in a centrosymmetric manner;
and a shaft hole is formed in the center of the rotor punching sheet.
9. A permanent magnet synchronous motor comprising a stator and a permanent magnet synchronous motor rotor according to any one of claims 1 to 8;
the stator is internally provided with a cavity for accommodating the rotor body, and the wire slot of the stator is a pear-shaped slot.
10. The permanent magnet synchronous motor according to claim 9, wherein 36 slots for accommodating windings are uniformly distributed in the circumferential direction of the stator, and the rotor body is provided with 8-pole permanent magnets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220844539.5U CN217010474U (en) | 2022-04-11 | 2022-04-11 | Permanent magnet synchronous motor rotor and permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220844539.5U CN217010474U (en) | 2022-04-11 | 2022-04-11 | Permanent magnet synchronous motor rotor and permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217010474U true CN217010474U (en) | 2022-07-19 |
Family
ID=82376348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220844539.5U Active CN217010474U (en) | 2022-04-11 | 2022-04-11 | Permanent magnet synchronous motor rotor and permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217010474U (en) |
-
2022
- 2022-04-11 CN CN202220844539.5U patent/CN217010474U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113691041A (en) | Rotor core | |
| CN110829648B (en) | Rotor, synchronous reluctance motor and method of forming rotor | |
| CN110875655A (en) | Motor rotor, motor and electric automobile | |
| CN217010474U (en) | Permanent magnet synchronous motor rotor and permanent magnet synchronous motor | |
| CN112653267A (en) | Motor with asymmetric rotor core | |
| CN214429439U (en) | Permanent magnet and outer rotor permanent magnet motor | |
| CN218071131U (en) | Rotor core, rotor subassembly, motor and vehicle | |
| CN219394511U (en) | Iron core structure, rotor and motor suitable for integral injection molding process | |
| CN218243134U (en) | Rotor, motor and vehicle | |
| CN112165193B (en) | Motor structure and compressor | |
| CN112583145A (en) | Stator core, stator, motor and fan | |
| CN112688519B (en) | Stator permanent magnet type axial magnetic field permanent magnet motor | |
| CN220754449U (en) | Food processor with stable connection | |
| CN220107683U (en) | Rotor punching sheet, motor rotor and permanent magnet synchronous motor | |
| CN216904471U (en) | Rotor core, rotor assembly and motor | |
| CN220754450U (en) | Permanent magnet direct current brushless motor with stable connection | |
| CN114039435B (en) | Rotor structure, motor structure, compressor structure and refrigeration equipment | |
| CN212381003U (en) | Pole number-adjustable rotor punching sheet and permanent magnet synchronous motor | |
| CN216564689U (en) | Rotor and motor | |
| CN213959836U (en) | Stator core, stator assembly and low-cogging-torque permanent magnet synchronous motor | |
| CN216390626U (en) | Rotor punching sheet of six-pole permanent magnet generator | |
| CN108599407B (en) | High-efficiency permanent magnet new energy automobile power motor electromagnetic punching sheet | |
| CN212969217U (en) | Low cogging torque rotor assembly | |
| CN219181260U (en) | Embedded rotor core of permanent magnet synchronous motor | |
| CN216904468U (en) | Rotor, permanent-magnet machine and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A type of permanent magnet synchronous motor rotor and permanent magnet synchronous motor Effective date of registration: 20230630 Granted publication date: 20220719 Pledgee: Bank of China Limited by Share Ltd. Foshan branch Pledgor: Foshan Dongyu Jinggong Electromechanical Technology Co.,Ltd. Registration number: Y2023980046808 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |