CN210518076U - Outer rotor horseshoe type winding permanent magnet motor - Google Patents
Outer rotor horseshoe type winding permanent magnet motor Download PDFInfo
- Publication number
- CN210518076U CN210518076U CN201921624964.8U CN201921624964U CN210518076U CN 210518076 U CN210518076 U CN 210518076U CN 201921624964 U CN201921624964 U CN 201921624964U CN 210518076 U CN210518076 U CN 210518076U
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- Prior art keywords
- stator
- horseshoe
- shaped
- end cover
- rotor
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- Withdrawn - After Issue
Links
- 238000004804 winding Methods 0.000 title claims abstract description 45
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 39
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 239000004020 conductor Substances 0.000 claims description 6
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 230000004907 flux Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses an external rotor horseshoe type winding permanent-magnet machine, including stator unit, rotor unit and casing end cover, the stator unit is connected with the casing end cover, and in the rotor unit was packed into to the stator unit, motor shaft connection rotor unit and motor shaft rotated and are connected the casing end cover. The advantage, this permanent-magnet machine has proposed a compound magnetic circuit structure through designing the mounting structure of winding on the stator to improve permanent-magnet machine torque density and power density and realize the lightweight, and adopt the vacuum embedment scheme with the stator assembly, improve the radiating effect, have higher torque density excellence.
Description
Technical Field
The utility model relates to an external rotor horseshoe type winding permanent-magnet machine belongs to permanent-magnet machine technical field.
Background
Compared with the traditional electrically excited motor, the permanent magnet motor has the advantages of simple and compact structure, high operation reliability, small size, light weight, low loss, high efficiency, high control precision and the like. The shape and size of the permanent magnet motor are different from those of a conventional induction motor, and the permanent magnet motor has the remarkable advantages of flexibility, diversity and the like. And thus has received wide attention from various industries, both industrial and civilian.
SUMMERY OF THE UTILITY MODEL
The utility model provides an external rotor horseshoe type winding permanent-magnet machine adopts horseshoe type stator core, and concrete technical scheme is:
an outer rotor horseshoe type winding permanent magnet motor comprises a stator unit, a rotor unit and a casing end cover, wherein the stator unit is connected with the casing end cover, the stator unit is arranged in the rotor unit, a motor shaft is connected with the rotor unit, and a motor shaft is rotatably connected with the casing end cover;
the stator unit is an annular stator formed by encircling a plurality of horseshoe-shaped stators, the openings of all the horseshoe-shaped stators face outwards, the horseshoe-shaped stators are formed by laminating silicon steel sheets, stator windings are wound on two legs of each horseshoe-shaped stator to form a horseshoe-shaped stator core, and a magnetic field at one end of a U-shaped winding defining the horseshoe-shaped stator core is an N pole, and a magnetic field at the other end of the U-shaped winding defines an S pole; an iron core frame is fixed at the end part of each leg of the horseshoe-shaped stator iron core, and a gap is reserved between the two iron core frames on each horseshoe-shaped stator iron core; gaps are reserved between every two adjacent iron core frames on every two adjacent horseshoe-shaped stator iron cores forming the annular stator, and the N poles and the S poles of every two adjacent horseshoe-shaped stator iron cores forming the annular stator are alternately arranged;
the shell end cover comprises a connecting end cover and an assembling sleeve, and the assembling sleeve is vertically arranged on the plate surface of the connecting end cover; the assembling sleeve is inserted into the annular stator, the stator unit and the shell end cover are subjected to vacuum casting by epoxy resin and are cured and molded, so that the stator core, the winding and the shell end cover form an integral stator assembly;
the motor shaft is inserted into the assembling sleeve and is rotationally connected with the assembling sleeve through at least one bearing, and one end of the motor shaft protrudes out of the assembling sleeve;
the rotor unit comprises a rotor yoke part and a plurality of magnets adhered to the inner surface of the rotor yoke part, the magnets are arranged in two rings corresponding to the ring-shaped stator, and the magnets positioned on the same circumference are alternately arranged in an N pole and an S pole; gaps are reserved between adjacent magnets on the same circumference, and the number of the magnets and the number of the U-shaped windings are set according to the slot pole matching number of any conventional permanent magnet motor; the rotor yoke is barrel-shaped, a connecting flange is arranged at the center of the inner barrel bottom of the rotor yoke, the rotor yoke is sleeved outside the stator unit, and the connecting flange is connected with the end of a motor shaft.
The utility model discloses an outer rotor horseshoe type winding permanent-magnet machine' S principle does, and horseshoe type stator winding utilizes U type winding one end magnetic field to be N, then other end magnetic field must be the S utmost point principle to make full use of this principle, place the both ends of N-S utmost point in the air gap magnetic field simultaneously. Therefore, the motor forms an axial magnetic flux shunt and a radial magnetic flux shunt, the action of a magnetic field is greatly utilized, a conventional motor stator yoke is omitted, and the torque density and the power density of the permanent magnet motor are increased. The adjacent two windings of the stator are electrified at a certain time to form N-S/N-S stator magnetic poles, and the two pairs of N-S/N-S magnetic poles correspond to the adjacent magnetic steel N-S/N-S on the rotor.
It is right to the utility model discloses technical scheme's preferred, the iron core frame is the square plate, sets up the leg male hole that supplies horseshoe iron type stator core on the square plate. The iron core frame is made of a magnetic conductive material and is a No. 45 steel plate, a Q235 steel plate or a Q195 steel plate. Because each horseshoe stator core is an independent unit, the horseshoe stator cores are fixed on the core frames, the core frames are made of magnetic conductive materials and have a magnetism gathering effect, and a magnetic circuit cannot be short-circuited between N-S of each core frame and needs to be separated, a gap is reserved between every two adjacent core frames.
To the utility model discloses technical scheme's preferred, magnet adopts magnet steel glue to paste on rotor yoke portion internal surface.
It is right to the utility model discloses technical scheme's preferred, connection end cover and assembly sleeve structure as an organic whole.
Right the utility model discloses technical scheme's preferred, set up heat dissipation ventilation breach on the barrel head of rotor yoke portion.
Right the utility model discloses technical scheme's preferred, rotor yoke portion sets up dustproof construction with between the connection end cover, and dustproof construction is for setting up the labyrinth groove on the connection end cover terminal surface, and the bung hole of rotor yoke portion inserts the labyrinth inslot, and it is dustproof to form the labyrinth.
The utility model has the advantages of compared with the prior art:
this permanent-magnet machine has proposed a compound magnetic circuit structure through designing the mounting structure of winding on the stator to improve permanent-magnet machine torque density and power density and realize the lightweight, and adopt the vacuum embedment scheme with the stator assembly, improve the radiating effect, it is excellent to have higher torque density.
1. And a concentrated winding mode is adopted, so that copper materials are saved, and copper consumption is greatly reduced.
2. The horseshoe iron core is adopted, and the iron core is formed by laminating or bonding silicon steel sheets, so that the consumption of the silicon steel sheet material is saved.
3. The horseshoe iron core is adopted, one end of the horseshoe iron core is N-pole, the other end of the horseshoe iron core is S-pole, and coils are wound at two ends of the horseshoe iron core, so that the horseshoe iron core has double magnetism gathering effect and high utilization rate.
4. The horseshoe iron core is adopted, so that the stator loss is low, the magnetic circuit is greatly shortened, and the loss is reduced.
5. The horseshoe iron core utilizes both axial magnetic circuit and radial magnetic circuit, and belongs to a mixed magnetic circuit permanent magnet motor.
6. The horseshoe iron core can be made into multiple poles, is suitable for low-speed and large-torque occasions, and greatly reduces the weight of the whole machine.
Drawings
Fig. 1 is a schematic view of the structure of a horseshoe-type stator core.
Fig. 2 is a schematic diagram of an analog motor forming an axial flux shunt.
Fig. 3 is a schematic diagram of a simulated motor forming a radial flux shunt.
Fig. 4 is a schematic diagram of two adjacent horseshoe stator core windings energized to form N-S/N-S stator poles.
FIG. 5 is a schematic view of the two pairs of N-S/N-S poles of FIG. 4 corresponding to adjacent magnetic steels N-S/N-S on the rotor.
Fig. 6 is a schematic view of the core frame forming a ring shape.
Fig. 7 is an overall schematic diagram of an outer rotor horseshoe type winding permanent magnet machine.
Fig. 8 is a cross-sectional view of fig. 7.
Fig. 9 is an assembly schematic of a stator unit and a rotor unit.
Fig. 10 is a perspective view of fig. 9.
Detailed Description
In order to make the disclosure of the present invention more comprehensible, the following description is further made in conjunction with the accompanying drawings 1 to 10 and the 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 for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, 2 and 3, the horseshoe stator winding of the outer rotor horseshoe winding permanent magnet motor uses the principle that the magnetic field at one end of the U-shaped winding is N, and the magnetic field at the other end is necessarily S-pole, and the principle is fully used, and two ends of the N-S-pole are simultaneously placed in the air gap magnetic field. Therefore, the motor forms an axial magnetic flux shunt and a radial magnetic flux shunt, the action of a magnetic field is greatly utilized, a conventional motor stator yoke is omitted, and the torque density and the power density of the permanent magnet motor are increased.
Referring to fig. 4 and 5, two adjacent windings of the stator are energized at a certain time to form N-S/N-S stator magnetic poles, and the two pairs of N-S/N-S magnetic poles are corresponding to the adjacent magnetic steels N-S/N-S on the rotor.
The N horseshoe stator cores are fixed on the core frame, each horseshoe stator core is an independent unit and is fixed on the core frame, the frame is made of magnetic conductive materials and has a magnetism gathering effect, a magnetic circuit cannot be short-circuited between N-S of each frame, and the frames need to be separated, as shown in fig. 2, 3 and 6.
It should be noted that if 18 horseshoe-shaped stator cores are adopted, the rotor is formed by splicing 16-pole magnetic steel to form an 18U/16P-type permanent magnet motor model; the utility model is not limited to 18U/16P; the slot pole matching number of the conventional three-phase permanent magnet motor can be any, such as: 9U/8P; 12U/10P; 36U/24P; 36U/32P, etc., not repeated; meanwhile, the utility model does not limit three phases and is also suitable for permanent magnet motors with five phases, six phases and nine phases. For convenience of explanation only, the 18U/16P structure is adopted to illustrate the content of the specific utility model.
Example 1
As shown in fig. 7, 8, 9 and 10, in example 1, 18 horseshoe-shaped stator cores and a rotor are spliced by 16-pole magnet steel to form an 18U/16P-type permanent magnet motor model, which is described in detail.
As shown in fig. 7 and 8, an outer rotor horseshoe type winding permanent magnet motor comprises a stator unit, a rotor unit and a housing end cover 4, wherein the stator unit is connected with the housing end cover 4, the stator unit is arranged in the rotor unit, a motor shaft 8 is connected with the rotor unit, and the motor shaft 8 is rotatably connected with the housing end cover 4.
As shown in fig. 9 and 10, the stator unit is an annular stator surrounded by a plurality of horseshoe-shaped stators 1, openings of all the horseshoe-shaped stators 1 face outward, the horseshoe-shaped stators 1 are stacked by silicon steel sheets, stator windings 2 are wound on two legs of the horseshoe-shaped stators 1 to form horseshoe-shaped stator cores, and a magnetic field at one end of a U-shaped winding defining the horseshoe-shaped stator core is an N pole, and a magnetic field at the other end of the U-shaped winding defines an S pole; an iron core frame 3 is fixed at the end part of each leg of the horseshoe-shaped stator iron core, and a gap is reserved between the two iron core frames 3 on each horseshoe-shaped stator iron core; gaps are reserved between every two adjacent iron core frames 3 on every two adjacent horseshoe-shaped stator iron cores forming the annular stator, and the N poles and the S poles of every two adjacent horseshoe-shaped stator iron cores forming the annular stator are alternately arranged.
As shown in fig. 8, the housing end cover 4 includes a connecting end cover and an assembling sleeve, and the assembling sleeve is vertically arranged on the plate surface of the connecting end cover; the assembly sleeve is inserted into the annular stator, the stator unit and the shell end cover 4 are subjected to vacuum casting by epoxy resin and are cured and molded, so that the stator core, the winding and the shell end cover 4 form an integral stator assembly. The connecting end cover and the assembling sleeve of the casing end cover 4 are of an integrated structure.
As shown in fig. 8, the motor shaft 8 is inserted into the fitting sleeve and rotatably coupled to the fitting sleeve by two bearings 7, and one end of the motor shaft 8 protrudes from the fitting sleeve.
In embodiment 1, the core frame 3 is a square plate, and holes into which the legs of the horseshoe stator core are inserted are formed in the square plate. The iron core frame 3 is made of a magnetic conductive material, and is a No. 45 steel plate, a Q235 steel plate or a Q195 steel plate. Because each horseshoe stator core is an independent unit, the horseshoe stator cores are fixed on the core frames, the core frames are made of magnetic conductive materials and have a magnetism gathering effect, and a magnetic circuit cannot be short-circuited between N-S of each core frame and needs to be separated, a gap is reserved between every two adjacent core frames.
In the embodiment 1, 18 horseshoe-shaped stator cores and a magnetism-gathering plate frame are independent, 18 horseshoe-shaped stator cores and magnetism-gathering plate frames surround a casing end cover 4 to be assembled into a circumferential stator assembly, a stator unit and the casing end cover 4 are subjected to vacuum casting by using epoxy resin with high thermal conductivity and high insulating property and are cured and molded, and the stator cores, windings and the casing end cover 4 are made into an integral stator assembly;
the epoxy resin with high thermal conductivity and high insulating property is a purchased component, and in this embodiment, a two-component epoxy potting compound of Elantas 5262 produced and sold by einlaus, germany is preferably adopted to integrate the horseshoe stator core, the winding and the housing end cover 4 into a whole to form the stator assembly.
As shown in fig. 8, 9 and 10, the rotor unit includes a rotor yoke portion 5 and a plurality of magnets 6 adhered to an inner surface of the rotor yoke portion 5, the magnets 6 are arranged in two rings corresponding to the ring-shaped stator, and the magnets 6 located on the same circumference are arranged with N poles and S poles alternately; gaps are reserved between adjacent magnets 6 on the same circumference, and the number of the magnets 6 and the number of the U-shaped windings are set according to the slot pole matching number of any conventional permanent magnet motor; the rotor yoke portion 5 is barrel-shaped, a connecting flange is arranged at the center of the inner barrel bottom of the rotor yoke portion 5, the rotor yoke portion 5 is sleeved outside the stator unit, and the connecting flange is connected with the end portion of the motor shaft 8.
The magnet 6 is adhered to the inner surface of the rotor yoke part 5 by adopting magnetic steel glue. The magnetic steel glue is a purchased part, and preferably adopts the loctite 326.
As shown in fig. 7, a heat dissipation and ventilation notch is formed in the bottom of the rotor yoke 5.
In embodiment 1, if the working condition environment is good and there is no dust powder, the outer rotor horseshoe-shaped winding permanent magnet motor can be opened without adding a dustproof structure, and the heat dissipation of the opened type is good. If the working condition requires water and dust prevention, the device needs to be made into a fully closed type.
The outer rotor motor usually used for unmanned aerial vehicles requires large power in a short time and is not used for a long time, so that the outer rotor motor is made into an open structure. And in industrial application, the structure is generally closed.
In embodiment 1, a dustproof structure is arranged between the rotor yoke portion 5 and the connecting end cover, the dustproof structure is a labyrinth groove arranged on the end face of the connecting end cover, and the barrel mouth of the rotor yoke portion 5 is inserted into the labyrinth groove to form labyrinth dustproof.
The utility model discloses the part that does not relate to all communicates with each other with prior art or adopts prior art to realize.
Where not otherwise indicated herein, it will be appreciated that the invention is not limited to or by the prior art, but is capable of modifications and variations as will be apparent to those skilled in the art, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides an outer rotor horseshoe type winding permanent-magnet machine, includes stator unit and rotor unit, its characterized in that: the motor is characterized by further comprising a machine shell end cover (4), wherein the stator unit is connected with the machine shell end cover (4), the stator unit is arranged in the rotor unit, the motor shaft (8) is connected with the rotor unit, and the motor shaft (8) is rotatably connected with the machine shell end cover (4);
the stator unit is an annular stator formed by encircling a plurality of horseshoe-shaped stators (1), the openings of all the horseshoe-shaped stators (1) face outwards, the horseshoe-shaped stators (1) are formed by overlapping silicon steel sheets, stator windings (2) are wound on two legs of the horseshoe-shaped stators (1) to form a horseshoe-shaped stator core, and a magnetic field at one end of a U-shaped winding defining the horseshoe-shaped stator core is an N pole, and a magnetic field at the other end of the U-shaped winding defines an S pole; an iron core frame (3) is fixed at the end part of each leg of the horseshoe-shaped stator iron core, and a gap is reserved between the two iron core frames (3) on each horseshoe-shaped stator iron core; gaps are reserved between every two adjacent iron core frames (3) on every two adjacent horseshoe-shaped stator iron cores forming the annular stator, and the N poles and the S poles of every two adjacent horseshoe-shaped stator iron cores forming the annular stator are alternately arranged;
the shell end cover (4) comprises a connecting end cover and an assembling sleeve, and the assembling sleeve is vertically arranged on the plate surface of the connecting end cover; the assembling sleeve is inserted into the annular stator, the stator unit and the shell end cover (4) are subjected to vacuum casting by epoxy resin and are cured and molded, so that the stator core, the winding and the shell end cover (4) form an integral stator assembly;
the motor shaft (8) is inserted into the assembling sleeve and is rotationally connected with the assembling sleeve through at least one bearing, and one end of the motor shaft (8) protrudes out of the assembling sleeve;
the rotor unit comprises a rotor yoke part (5) and a plurality of magnets (6) adhered to the inner surface of the rotor yoke part (5), the magnets (6) are arranged in two rings corresponding to the ring-shaped stator, and the magnets (6) positioned on the same circumference are alternately arranged in an N pole and an S pole; gaps are reserved between adjacent magnets (6) on the same circumference, and the number of the magnets (6) and the number of the U-shaped windings are set according to the slot pole matching number of any conventional permanent magnet motor; the rotor yoke portion (5) is barrel-shaped, a connecting flange is arranged at the center of the inner barrel bottom of the rotor yoke portion (5), the rotor yoke portion (5) is sleeved outside the stator unit, and the connecting flange is connected with the end portion of the motor shaft (8).
2. The outer rotor horseshoe type winding permanent magnet machine of claim 1, wherein: the iron core frame (3) is a square plate, and holes for inserting legs of the horseshoe-shaped stator iron core are formed in the square plate.
3. The outer rotor horseshoe type winding permanent magnet machine of claim 2, wherein: the iron core frame (3) is made of a magnetic conductive material, and is a No. 45 steel plate, a Q235 steel plate or a Q195 steel plate.
4. The outer rotor horseshoe type winding permanent magnet machine of claim 1, wherein: the magnet (6) is adhered to the surface of the rotor yoke part (5) by adopting magnetic steel glue.
5. The outer rotor horseshoe type winding permanent magnet machine of claim 1, wherein: the connecting end cover and the assembling sleeve are of an integrated structure.
6. The outer rotor horseshoe type winding permanent magnet machine of claim 1, wherein: and a heat dissipation and ventilation notch is formed in the barrel bottom of the rotor yoke part (5).
7. The outer rotor horseshoe type winding permanent magnet machine of claim 1, wherein: set up dustproof construction between rotor yoke portion (5) and the connecting end cover, dustproof construction is for setting up the labyrinth groove on the connecting end cover terminal surface, and the bung hole of rotor yoke portion (5) inserts the labyrinth inslot, forms the labyrinth dustproof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921624964.8U CN210518076U (en) | 2019-09-27 | 2019-09-27 | Outer rotor horseshoe type winding permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921624964.8U CN210518076U (en) | 2019-09-27 | 2019-09-27 | Outer rotor horseshoe type winding permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210518076U true CN210518076U (en) | 2020-05-12 |
Family
ID=70571875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921624964.8U Withdrawn - After Issue CN210518076U (en) | 2019-09-27 | 2019-09-27 | Outer rotor horseshoe type winding permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210518076U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535316A (en) * | 2019-09-27 | 2019-12-03 | 南京合工动力科技有限公司 | Outer rotor horseshoe-shaped winding permanent magnet motor |
| CN110535316B (en) * | 2019-09-27 | 2024-06-25 | 南京合工动力科技有限公司 | Outer rotor horseshoe-shaped winding permanent magnet motor |
-
2019
- 2019-09-27 CN CN201921624964.8U patent/CN210518076U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535316A (en) * | 2019-09-27 | 2019-12-03 | 南京合工动力科技有限公司 | Outer rotor horseshoe-shaped winding permanent magnet motor |
| CN110535316B (en) * | 2019-09-27 | 2024-06-25 | 南京合工动力科技有限公司 | Outer rotor horseshoe-shaped winding permanent magnet motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200512 Effective date of abandoning: 20240625 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200512 Effective date of abandoning: 20240625 |