CN212343442U - Spliced motor stator core with oriented silicon steel sheets - Google Patents
Spliced motor stator core with oriented silicon steel sheets Download PDFInfo
- Publication number
- CN212343442U CN212343442U CN201922182786.4U CN201922182786U CN212343442U CN 212343442 U CN212343442 U CN 212343442U CN 201922182786 U CN201922182786 U CN 201922182786U CN 212343442 U CN212343442 U CN 212343442U
- Authority
- CN
- China
- Prior art keywords
- stator
- oriented silicon
- silicon steel
- stator core
- steel sheets
- 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.)
- Expired - Fee Related
Links
- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 230000004907 flux Effects 0.000 abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000004080 punching Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a spliced motor stator core adopting oriented silicon steel sheets, which relates to the technical field of motors and comprises a stator core body, wherein the stator core body comprises a stator tooth part and a stator yoke part, one end of the stator tooth part is connected with the stator yoke part, the stator core body is formed by laminating the oriented silicon steel sheets, a detachable connecting structure is arranged between the stator yoke parts and comprises a limiting block and a limiting groove, the limiting block and the limiting groove are respectively arranged at two ends of the stator yoke part and are matched with the limiting groove, the minimum radial width of the stator yoke part is set as r, the minimum circumferential width of the stator tooth part is set as d, wherein, the ratio of r to d is more than or equal to 1/2, the rolling direction of the oriented silicon sheets is the same as the direction of a symmetrical shaft of the stator tooth part, the stator core is convenient to install, the magnetic flux density is improved, and the torque density and efficiency of the, the comprehensive performance of the motor is improved.
Description
Technical Field
The utility model relates to the technical field of electric machines, more specifically say, it relates to an adopt concatenation formula motor stator core that has oriented silicon steel sheet.
Background
The existing permanent magnet synchronous motor iron core material mainly adopts non-oriented electrical steel, the saturation magnetic density of the non-oriented electrical steel is low, the iron loss is high, and the material is one of the bottlenecks of the whole motor in an application scene with high performance requirements.
The maximum magnetic flux density of the stator tooth part can be limited due to the material property of the non-oriented silicon steel sheet, so that the iron loss is inevitably increased, and the air gap magnetic flux density is limited, so that the performance of the motor is reduced.
The traditional Chinese patent with publication number CN205610360U discloses a spliced stator and a motor, wherein a non-oriented silicon steel sheet is used in a stator yoke part, an oriented silicon steel sheet is used in a stator tooth part, and a complete motor stator is formed by splicing one stator yoke part and a plurality of stator tooth parts. The scheme is only suitable for the motor stator of the integrated punching sheet of the yoke part, and has the advantages of complex process, high requirement on processing precision and high cost.
The chinese patent with the prior publication number CN202696424U discloses a permanent magnet synchronous motor, wherein a stator winding module adopts a spliced stator, and a tooth part with a yoke part is taken as a unit. The scheme mainly adopts non-oriented silicon steel sheets, the upper limit of the magnetic flux density in the direction of the tooth part is lower, the iron loss is higher, and the performance of the motor is influenced.
As shown in fig. 1, the existing commonly used integral punching sheet is made of non-oriented silicon steel sheets, the upper limit of the magnetic flux density in the tooth direction is low, the iron loss is high, the performance of the motor is affected, the punching sheet is inconvenient to wind, the full slot rate of a coil is low, and the torque density and the efficiency of the motor are further limited.
SUMMERY OF THE UTILITY MODEL
To the not enough that exists among the prior art, the utility model aims to provide an adopt concatenation formula motor stator core that has oriented silicon steel sheet can dismantle connection structure through setting up, is convenient for install, and magnetic flux density improves to improve air gap magnetic flux density, and then improve the moment of torsion density and the efficiency of motor, concrete scheme as follows:
a spliced motor stator core with oriented silicon steel sheets comprises a stator core body, wherein the stator core body comprises stator tooth parts and stator yoke parts which are correspondingly arranged in number, one ends of the stator tooth parts are connected with the stator yoke parts, the stator core body is formed by overlapping the oriented silicon steel sheets, a detachable connecting structure is arranged between the stator yoke parts, the detachable connecting structure comprises a limiting block connected with the stator yoke parts and limiting grooves formed in the stator yoke parts, the limiting block and the limiting grooves are respectively arranged at two ends of the stator yoke parts, and the limiting block is matched with the limiting grooves;
the minimum radial width of the stator yoke part is r, the minimum circumferential width of the stator tooth part is d, the ratio of r to d is greater than or equal to 1/2, and the rolling direction of the oriented silicon sheet is the same as the direction of the symmetry axis of the stator tooth part.
Further, the stator tooth part is a straight parallel tooth.
Further, the stator tooth part is a trapezoidal tooth.
Furthermore, the end surface of the stator tooth part far away from the stator yoke part is set to be a first cambered surface.
Further, an end surface of the stator yoke connected to the stator tooth is a second arc surface.
Compared with the prior art, the beneficial effects of the utility model are as follows:
(1) the stopper is in the spacing groove in adjacent stator tooth, make two stator yoke portions can dismantle the concatenation together, thereby make a plurality of stator yoke portions and stator tooth portion form the electron iron core body, easy to assemble, and every stator yoke portion is the independent part, repeatedly usable, convenient processing saves the cost, according to electromagnetic simulation, compare and adopt non-oriented silicon steel sheet, the highest magnetic flux density of stator tooth portion improves, thereby improve air gap magnetic flux density, and then improve the torque density and the efficiency of motor, compare the stator of traditional integral type punching press moreover, stator yoke portion is the independent part, the utility model discloses make things convenient for the wire winding, full groove rate improves, thereby improve the energy density of motor, to sum up, improve the comprehensive properties of motor.
Drawings
Fig. 1 is a schematic structural diagram of an integrated stamped stator in the prior art;
fig. 2 is an overall schematic view of an embodiment of the present invention;
FIG. 3 is a schematic structural view illustrating a detachable connection structure of the present invention;
FIG. 4 is a schematic structural view showing the relationship between r and d according to the present invention;
fig. 5 is the schematic structural diagram of the present invention showing that the end of the stator tooth is a crescent arc groove.
Reference numerals: 1. a stator core body; 2. a stator tooth portion; 3. a stator yoke; 4. a detachable connection structure; 41. a limiting block; 42. a limiting groove; 5. a first arc surface; 6. a second cambered surface.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 2, a concatenation formula motor stator core who adopts to have oriented silicon steel sheet, including stator core body 1, stator core body 1 includes stator tooth portion 2 and stator yoke portion 3 that quantity correspondence set up, 2 one end of stator tooth portion and 3 body coupling of stator yoke portion, stator core body 1 is formed by having the oriented silicon steel sheet coincide, be equipped with between stator yoke portion 3 and dismantle connection structure 4, two adjacent stator yoke portions 3 on the stator core body 1 are in the same place through dismantling connection structure 4 concatenation, thereby form complete annular stator core body 1 that is, during the punching sheet, there is oriented silicon wafer's rolling direction the same with the symmetry axis place direction of stator tooth portion 2.
As shown in fig. 3, can dismantle connection structure 4 includes the stopper 41 of being connected with stator yoke portion 3 and sets up the spacing groove 42 on stator yoke portion 3, stopper 41, spacing groove 42 is in the both ends of stator yoke portion 3 respectively, and stopper 41 and spacing groove 42 adaptation, in this embodiment, stopper 41 can be semicircle form, when stopper 41 is in spacing groove 42, inject stator yoke portion 3's position, make it not slide or wrench movement, and because stopper 41 surface smoothness, when stator core body 1 receives external force and assaults, play certain cushioning effect, avoid too sharp-pointed stress concentration, lead to stator yoke portion 3 damaged. The shape of the stopper 41 may be in other forms, and the present invention is not limited thereto.
As shown in fig. 4, the stator teeth 2 are linear parallel teeth, the stator teeth 2 may also be trapezoidal teeth, the minimum radial width of the stator yoke 3 is set to r, and the minimum circumferential width of the stator teeth 2 is set to d, wherein the ratio of r to d is represented by a parameter k, k is determined by the performance of the oriented silicon steel sheet, k is greater than or equal to 1/2, and in the embodiment, k is equal to 0.71.
As shown in fig. 3, the end surface of the stator tooth 2 away from the stator yoke 3 is a first arc surface 5 in the shape of an arc surface, and optimally, the arc surfaces of all the stator tooth 2 may be concentric arcs. As shown in fig. 5, the end surface of the stator tooth 2 facing the stator yoke 3 may be a curved surface, or a crescent arc groove may be formed at one end of the stator tooth 2 away from the stator yoke 3, so that the wear of the enamel wire is reduced during winding. The terminal surface that stator yoke portion 3 and stator tooth 2 are connected is established to be the second cambered surface 6 of cambered surface form, optimally, and the cambered surface of all stator yoke portions 3 is concentric arc, perhaps also can be the drop form, to this the utility model discloses do not restrict.
According to the electromagnetism emulation, compare and adopt non-oriented silicon steel sheet, the 2 highest magnetic flux density in stator tooth improves, generally is about 10% at least to improve air gap magnetic flux density, and then improve the torque density and the efficiency of motor, compare the stator of traditional integral type punching press moreover, stator yoke portion 3 is the independent part, the utility model discloses make things convenient for the wire winding, full groove rate improves, thereby improves the energy density of motor.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A spliced motor stator core adopting oriented silicon steel sheets comprises a stator core body (1), the stator core body (1) comprises stator tooth parts (2) and stator yoke parts (3) which are correspondingly arranged in number, one end of the stator tooth part (2) is connected with the stator yoke part (3), the stator core body (1) is formed by superposing oriented silicon steel sheets, characterized in that a detachable connecting structure (4) is arranged between the stator yoke parts (3), the detachable connecting structure (4) comprises a limiting block (41) connected with the stator yoke part (3) and a limiting groove (42) arranged on the stator yoke part (3), the limiting blocks (41) and the limiting grooves (42) are respectively arranged at two ends of the stator yoke (3), and the limiting blocks (41) are matched with the limiting grooves (42);
the minimum radial width of the stator yoke portion (3) is set to be r, the minimum circumferential width of the stator tooth portion (2) is set to be d, the ratio of r to d is greater than or equal to 1/2, and the rolling direction of the oriented silicon steel sheet is the same as the direction of the symmetry axis of the stator tooth portion (2).
2. The spliced stator core for electric machines using oriented silicon steel sheets as claimed in claim 1, wherein the stator teeth (2) are straight parallel teeth.
3. The spliced stator core for an electric motor using oriented silicon steel sheets as claimed in claim 1, wherein the stator teeth (2) are trapezoidal teeth.
4. The spliced motor stator core adopting oriented silicon steel sheets as claimed in claim 1, wherein an end surface of the stator tooth portion (2) away from the stator yoke portion (3) is provided with a first arc surface (5).
5. The spliced motor stator core adopting oriented silicon steel sheets as claimed in claim 1, wherein the end surface of the stator yoke portion (3) connected with the stator teeth (2) is provided with a second cambered surface (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182786.4U CN212343442U (en) | 2019-12-09 | 2019-12-09 | Spliced motor stator core with oriented silicon steel sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922182786.4U CN212343442U (en) | 2019-12-09 | 2019-12-09 | Spliced motor stator core with oriented silicon steel sheets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212343442U true CN212343442U (en) | 2021-01-12 |
Family
ID=74063621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922182786.4U Expired - Fee Related CN212343442U (en) | 2019-12-09 | 2019-12-09 | Spliced motor stator core with oriented silicon steel sheets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212343442U (en) |
-
2019
- 2019-12-09 CN CN201922182786.4U patent/CN212343442U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102306995B (en) | Permanent magnet biased bearingless switched reluctance motor | |
| CN107959361B (en) | Stator of permanent magnet torque motor and permanent magnet torque motor with high torque density | |
| EP2826131B1 (en) | Laminar segment for electric motor segmented stator | |
| CN106787562A (en) | Alternately pole, mixed excitation directly drives vernier motor | |
| CN101702543B (en) | Disk type permanent magnet motor rotor capable of automatically weakening magnetism | |
| CN107332427A (en) | Bilateral 180 ° of low-thrusts of side set fluctuate continuous pole permanent magnetic linear synchronous motor | |
| CN201674286U (en) | Segmented motor stator iron core lamination | |
| CN113949244B (en) | Single-tooth concentrated winding few-harmonic axial flux motor | |
| CN208299561U (en) | rotor, motor and compressor | |
| US20220181920A1 (en) | End winding flux motor | |
| CN201789396U (en) | Asynchronous starting permanent synchronous motor | |
| CN212343442U (en) | Spliced motor stator core with oriented silicon steel sheets | |
| CN110611386B (en) | Motor rotor, motor and compressor | |
| CN209748282U (en) | Rotor for reducing torque fluctuation of synchronous motor main shaft | |
| CN104467355B (en) | Low-detent-force fluctuation permanent magnet linear motor of orthorhombic structure lateral teeth | |
| CN209709789U (en) | Rotor, motor, compressor and air conditioner, vehicle | |
| CN108736610A (en) | Rotor and magneto | |
| CN103701236A (en) | Outer rotor synchronous magnetic resistance motor rotor | |
| CN208890610U (en) | A kind of permanent-magnet synchronous rimless motor of the rotor without silicon steel structure | |
| CN210577995U (en) | Rotor structure of permanent magnet synchronous motor | |
| Wei et al. | Presentation of a double-stator axial-flux permanent-magnet disk motor with soft magnetic composite cores and its cogging torque reduction | |
| WO2020057146A1 (en) | Built-in permanent magnet servo motor having rotor slots | |
| CN112003401A (en) | Rotor, motor, compressor, air conditioner and vehicle | |
| WO2019242218A1 (en) | Rotor, motor and compressor | |
| JP5152957B2 (en) | Stator core and motor stator and motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210112 |