CN108616180A - A kind of combination type permanent-magnet rotor - Google Patents
A kind of combination type permanent-magnet rotor Download PDFInfo
- Publication number
- CN108616180A CN108616180A CN201810809050.2A CN201810809050A CN108616180A CN 108616180 A CN108616180 A CN 108616180A CN 201810809050 A CN201810809050 A CN 201810809050A CN 108616180 A CN108616180 A CN 108616180A
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- China
- Prior art keywords
- iron core
- magnetic
- pole
- yoke
- core
- Prior art date
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- 239000011162 core material Substances 0.000 description 27
- 229910000838 Al alloy Inorganic materials 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/15—Sectional machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
A kind of combination type permanent-magnet brushless electric motor rotor includes yoke core, rotor hub and the locking pin of the magnetic links of rectangle, fan-shaped pole iron core, triangle.It is characterized in that the both sides that magnetic links homopolarity is entrenched in fan-shaped pole iron core opposite to each other constitute a magnetic pole, it is several to be alternately connected with yoke core to N magnetic poles and S magnetic poles, it is so many that magnetic pole and yoke portion iron core are sequentially connected in series and are combined into loop configuration, the tenon of fan-shaped pole iron core and the tongue-and-groove of rotor hub closely fasten, yoke core is placed in the triangle space between N magnetic poles and S magnetic poles, wedge structure is added between yoke core and rotor hub and eliminates whole fit-up gaps, above-mentioned part, which is locked, to be integrally formed；This combined rotor is sturdy and durable, has both had the advantages that built in permanent magnet, and it is kind close to obtain higher sine in air gap；Magnetic links north and south interpolar is set not have magnetic bridge unicom again, leakage magnetic flux loss is few, and saves material, easy to manufacture, the energy-saving efficient motor big suitable for manufacture specific power.
Description
Technical field
The invention belongs to the designs and manufacture of technical field of motors, especially permanent magnetic brushless rotor.
Background technology
In recent years, the application of permanent magnetic brushless is increasingly extensive, and technology is constantly progressive, and in order to improve specific power, motor is set
Meter tends to high speed, the design of rotor gradually by magnet steel surface-mount type, it is embedded, switch to embedded IPM structures.Especially electronic vapour
Automobile-used PMSM driving motors, it is built-in that magnetic pole insertion rotor iron is combined by multi-disc magnet steel in order to form the air-gap field of high-magnetodensity
Core is designed to mainstream, such as horizontal 2 layers embedded magnetic links field structure of driving motor " two fonts " of BMW i3 and Toyota
The symmetrical tilting 2 embedded field structures of III generations of Prius- " V " shape.- IV hybrid power master of new generation of disclosed Toyota Prius recently
Drive the design that motor further uses symmetrical tilting plus 1 horizontal composition in centre 3 magnetic poles of " deep V-arrangement " 2 shapes（Fig. 1）.Though
Right wherein details further comprises the professional spirit of Toyota engineer, but generally this " V " shape arrangement and version, is already
It is designed scheme known to personnel, further study show that still there is shortcoming.
But in design so far, the symmetrical tilting rotor pack of this magnetic sheet is all whole annular disc,
This disk rotor has the disadvantage that：
1, magnetic pole piece and yoke portion are certainly existed on rotor magnetic circuit, in order to make iron core each section magnetic pole piece and yoke portion connect
It is integrally formed, magnetic links north and south interpolar inevitably forms magnetic bridge（10）, but magnetic bridge can constitute magnetic in magnetic links north and south interpolar
Road, it is contemplated that structural strength, magnetic bridge section cannot be too small, and since core material permeability is very high, magnetic resistance is limited, therefore can not keep away
Exempt to will produce larger short circuit flux, reduce the using effect of magnetic links, flux loss is up to 10%~20%；Such as the length of pole arc is
31.4, air gap flux density 0.9T, it is 2T that often collection, which has the magnetic bridge of 3 1mm wide, magnetic bridge saturation leakage-flux density, then flux loss is（3×1
×2）/（31.4×0.9）=21.2%；
2, round punching keeps stock utilization very low.
Therefore, it is necessary to propose a kind of new design with overcome there are the shortcomings that.It is more preferable to meet motor operation steadily, at a high speed
Efficiently, structure is reliable, material is saved, manufacture readily requires.
Invention content
A kind of combination type permanent-magnet rotor includes at least magnetic links and iron core pole portion, iron core yoke part, rotor hub；Its feature exists
In the pole portion of iron core and yoke portion be part disconnected from each other, referred to as pole iron core before the combination（2）With yoke core（3）, pole iron core
Quantity be equal to yoke core quantity be equal to number of poles（2p）, magnetic links homopolarity is entrenched in the both sides structure of fan-shaped pole iron core opposite to each other
It is several to be alternately connected with yoke core to N magnetic poles and S magnetic poles at magnetic pole, it is sequentially connected in series and is combined into loop configuration；Fan-shaped pole iron core
（2）Tenon（5）With rotor hub（4）Tongue-and-groove（6）It is close to fasten, yoke core（3）The triangle being placed between N magnetic poles and S magnetic poles
In shape space, in yoke core（3）And rotor hub（4）Between tapered member be added eliminate whole fit-up gaps, to make above-mentioned zero
Part, which is locked, to be integrally formed, and entire rotor is using ancient tenon riveting knot structure and wedge is well-set locks.
The pole iron core（2）It is detained by fan-shaped silicon steel punching is folded, fan-shaped pole iron core circular arc forms air gap towards stator；
There are symmetrical two tilting rectangular slots on the iron core of pole（2.2）, relatively at 45 ° ~ 150 ° of angles between skewed slot, main magnetic links
（1）It inlays wherein, homopolarity is opposite, constitutes a magnetic pole, for pole iron core similar to sector, arc length slightly accounts for a pole span；Pole iron core fan
More smaller slots can be set on face, for inlaying more magnetic links to form the air-gap field of needs；Pole iron
Core sector shank is set as tenon（5）, tenon（5）And rotor hub（4）On trapezoid tongue groove（6）Tenon closes connection, has among tenon
Hole, tenon conjunction gap can be eliminated by being inserted into steel pin.
The yoke core（3）For approximate equilateral triangle cylindricality, for apex towards air gap, it is oblique that angle is equal to rectangle
The difference of slot angle and pole span angle, makes two sides（3.1）It can be with magnetic links in rectangle skewed slot（1）Fit closely, yoke core bottom surface with
Rotor hub（4）Outer surface coordinates.Yoke core can use silicon steel sheet stack at, it is also possible to iron-based soft magnetic composite material（SMC）Using powder
Metallurgical technology makes.
The tapered member is elastic junction of the edges of two sheets of paper pin, in the mating surface of yoke core and rotor hub, respectively have several half slots and
Aligned in position is inserted into the suitable spring catch of diameter in slot（7）, yoke core can be made（3）By magnetic links（1）It is long to be pressed on pole iron core
Square shoot（2.2）In.
The rotor hub（4）Inner periphery both sides and end plate（9）It is connected, short slab（9）And and motor shaft（8）It is connected, rotor hub
（4）2p trapezoid tongue groove is provided on outer circumference surface（6）, for receiving pole iron core tenon to close；Rotor hub uses non-magnet material system
At.Using aluminium alloy, good heat dissipation, heat conduction is non-magnetic.
The end cap is used to rotor hub being locating and connect to motor shaft, has ventilating hole channel on end plate（11）, edge makes
There is blade（12）, rotor can drive fluid circulation when rotating, help to shift magnetic links and rotor core heat, reduce magnetic links
Temperature prevents from demagnetizing.
Advantage using the rotor design of the present invention is as follows：
The first, main magnetic links are mutually not attached between pole iron core and yoke core between pole and yoke, magnetic between magnetic links south poles
Road is air, and leakage magnetic flux is negligible, and magnetic flux all reaches air gap subsequently into stator magnetic circuit by pole shoe, and magnet energy obtains
It must make full use of, rare-earth magnet dosage can be reduced by generating same magnetic flux；
The second, rotor each section is connected by tenon riveting knot structure and wedge configuration self-locking combination forms, and tenon closes position stress number of cross-sections
Times common iron core magnetic bridge, it is thus possible to bear centrifugal force caused by higher rotating speed, in other words the same material institute of same rotating speed
The strain smaller of generation, improves the reliability of product；
The design of third, rotor hub and end plate reduces the weight of iron core, since aluminium alloy has good thermal conduction characteristic, magnetic sheet
It is easy, by rotor hub, end plate, blade outflow, the temperature of magnetic links can be reduced with the heat of rotor；Aluminium alloy is easily worked, and is made
With extrusion molding, production efficiency is high, and assembly precision can meet needs；
4th, core stamping processing becomes more economical reasonable.The higher forcing press of pressure smaller, speed can be used to improve production
Efficiency, mold more little makings are easier, stock utilization higher, and cost is lower.
Description of the drawings
The p-m rotor that the typical circular punching of Fig. 1 prior arts is built up, signified label 10 is magnetic bridge.
Fig. 2 this patent combination type permanent-magnet rotor embodiment attached drawings.
Fig. 3 this patent composite fabricated rotor sectional views.
The poles Fig. 4 iron core 3D schemes.
Fig. 5 yoke cores 3D figures.
Above-mentioned attached figure label is respectively：1 main magnetic links, 1.1 small magnetic links, 2 pole iron cores, 3 yoke cores, 3.1 inclined-planes,
3.2 half slots, 4 rotor hubs, 5 tenons, 6 tongue-and-grooves, 7 spring catch, 8 armature spindles, 9 end plates, 10 magnetic bridges, 11 ducts, 12 blades.
Preferred embodiment
Now further this patent is illustrated by taking 8 pole p-m rotors as an example.A kind of combination type permanent-magnet rotor, including 8 groups
Magnetic pole, 8 yoke cores, 1 secondary rotor hub and armature spindle and end plate.In 8 groups of magnetic poles, there are 4 South Pole groups and 4 arctic groups, hands over
It is assembled for being arranged along rotor hub.
8 groups of magnetic poles, every group includes pole iron core（2）With 2 main magnetic links（1）With 1 small magnetic links（1.1）；Pole iron
There is slot among core（2.1）Inlay magnetic links（1.1）；There is rectangular slot on both sides（2.2）, inlay main magnetic links（1）, 2
The polarity that main magnetic links are pasted into slot bottom is identical.Pole iron core（2）It is approximately fan-shaped, fan-shaped cambered surface passes through correction of the flank shape, optimizes air-gap field,
Reduce harmonic wave.Fan-shaped shank is set as trapezoidal tenon（5）, shape and rotor hub（4）On trapezoid tongue groove（6）It is identical, in tenon
Between have a hole, tenon, which closes, to be inserted into steel pin and can eliminate fit clearance.
Yoke core as connection magnetic pole（3）It is approximately isosceles triangle, two inclined-planes（3.1）Angle is 108 °.On one side with
Magnetic links N is extremely connected, and another side is extremely connected with magnetic links S, and yoke core bottom edge is arc, arc radius and rotor hub（4）Radius
Identical, there is half slot in centre（3.2）It can be with the half slot in rotor hub（4.2）Aligned in position synthesizes round hole.
Pole iron core, magnetic links, yoke core rely on rotor hub assembling forming, are then inserted into spring catch（7）It can be formed close
Connection.Both sides end plate（9）For connecting rotor hub（4）And motor shaft（8）, rotor assembly can be completed with automation process.
Entire rotor is locked together using ancient tenon riveting knot structure and wedge are well-set, tenon stress section
Much larger than the sum of prior art magnetic bridge section, tensile strength is enough to bear rotor and is rotated with higher speed than the prior art.This example turns
The a diameter of 84mm of son, rotor hub are aluminium alloy, when 10000 revs/min of rotating speed tenon strain be less than 0.02mm, control is made in spring catch
Within the scope of.
Since the magnetic flux of magnetic links cannot enter rotor hub, leakage field is not present.Magnetic flux can only send out via the poles magnetic links N →
The poles rotor N iron core → air gap → entering stator core teeth portion → passes through the yoke portion → poles stator core S teeth portion → S air gaps → rotor S
Pole iron core → the poles magnetic links S → poles magnetic links N → rotor yoke iron core → return to the poles S of magnetic links.
The use of rotor hub and end plate is made of aluminium alloy, alleviates rotor weight.Since aluminium alloy has good heat to pass
Characteristic is led, the temperature of magnetic links can be reduced；Aluminium alloy is easily worked, and this example uses aluminium alloy extruded forming, and production efficiency is high, dress
It can meet needs with precision.
End cap is used to rotor hub being locating and connect to motor shaft, has duct 11 and blade 12 on end plate, when rotor rotates
Fluid circulation can be driven, heat is contributed to conduct or come out.
Claims (5)
1. a kind of combination type permanent-magnet rotor includes at least magnetic links and iron core pole portion, iron core yoke part, rotor hub；It is characterized in that
The pole portion and yoke portion of iron core are part disconnected from each other before the combination, referred to as pole iron core（2）With yoke core（3）, pole iron core
The quantity that quantity is equal to yoke core is equal to number of poles（2p）, the both sides that magnetic links homopolarity is entrenched in fan-shaped pole iron core opposite to each other are constituted
Magnetic pole, it is several to be alternately connected with yoke core to N magnetic poles and S magnetic poles, it is sequentially connected in series and is combined into loop configuration；Fan-shaped pole iron core
（2）Tenon（5）With rotor hub（4）Tongue-and-groove（6）It is close to fasten, yoke core（3）The triangle being placed between N magnetic poles and S magnetic poles
In shape space, in yoke core（3）And rotor hub（4）Between tapered member be added eliminate whole fit-up gaps, to make above-mentioned zero
Part, which is locked, to be integrally formed, and entire rotor is firmly locked using ancient tenon riveting knot structure and wedge structure.
2. a kind of combination type permanent-magnet rotor as described in profit requires 1, the pole iron core（2）It is detained, is fanned by fan-shaped silicon steel punching is folded
The pole iron core circular arc of shape forms air gap towards stator；There are symmetrical two tilting rectangular slots on the iron core of pole（2.2）, skewed slot it
Between relatively at 45 ° ~ 150 ° of angles, main magnetic links（1）It inlays wherein, homopolarity is opposite, constitutes a magnetic pole, pole iron core is similar to fan
Shape, arc length slightly account for a pole span；More smaller slots can be set on the iron core covering of the fan of pole, for inlaying more magnet steel
Piece is to form the air-gap field of needs；Pole iron core sector shank is set as tenon（5）, tenon（5）And rotor hub（4）On it is trapezoidal
Tongue-and-groove（6）Tenon closes connection, there is hole among tenon, and tenon conjunction gap can be eliminated by being inserted into steel pin.
3. a kind of combination type permanent-magnet rotor as described in claim 1, the yoke core（3）For approximate equilateral triangle cylindricality, triangle
Shape top is equal to the difference of rectangle skewed slot angle and pole span angle, makes two sides towards air gap, angle（3.1）It can be with rectangle skewed slot
Interior magnetic links（1）It fits closely, yoke core bottom surface and rotor hub（4）Outer surface coordinates.
4. a kind of combination type permanent-magnet rotor as described in claim 1, the tapered member is elastic junction of the edges of two sheets of paper pin, in yoke core and is turned
The mating surface of sub- hub, respectively has several half slots and aligned in position, and the suitable spring catch of diameter is inserted into slot（7）, yoke can be made
Iron core（3）By magnetic links（1）It is pressed on pole iron core rectangle skewed slot（2.2）In.
5. a kind of combination type permanent-magnet rotor as described in claim 1, the rotor hub（4）Both ends and end plate（9）It is connected, end plate
（9）And and motor shaft（8）It is connected, rotor hub（4）2p trapezoid tongue groove is provided on outer circumference surface（6）, for receiving pole iron core
Tenon closes；Rotor hub and end plate are made using the non-magnetic material of heat conduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809050.2A CN108616180A (en) | 2018-07-23 | 2018-07-23 | A kind of combination type permanent-magnet rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809050.2A CN108616180A (en) | 2018-07-23 | 2018-07-23 | A kind of combination type permanent-magnet rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108616180A true CN108616180A (en) | 2018-10-02 |
Family
ID=63666686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810809050.2A Pending CN108616180A (en) | 2018-07-23 | 2018-07-23 | A kind of combination type permanent-magnet rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108616180A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617279A (en) * | 2019-01-18 | 2019-04-12 | 江苏大学 | A kind of built-in hybrid permanent magnet motor rotor construction of modularization |
| CN110212667A (en) * | 2019-06-14 | 2019-09-06 | 安徽大学 | A kind of permanent magnet machine rotor core construction |
| WO2020143480A1 (en) * | 2019-01-10 | 2020-07-16 | 广东德昌电机有限公司 | Magnetic core, electric motor having magnetic core, and mower having electric motor |
| CN111668949A (en) * | 2020-05-29 | 2020-09-15 | 宁波德昌科技有限公司 | Rotor for rotary motor and manufacturing method thereof |
| CN112421906A (en) * | 2020-12-18 | 2021-02-26 | 山东理工大学 | Production method of unilateral retaining modular driving motor rotor with bat-shaped groove |
| CN112436689A (en) * | 2020-12-18 | 2021-03-02 | 山东理工大学 | Production method of nested drive motor salient pole rotor with backstop function |
| EP4050765A1 (en) * | 2021-02-26 | 2022-08-31 | Hefei Jee Power Systems Co., Ltd. | Rotor sheet |
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| CN206461452U (en) * | 2016-09-23 | 2017-09-01 | 比亚迪股份有限公司 | A kind of motor rotor punching sheet, rotor and motor |
| CN206685994U (en) * | 2017-03-24 | 2017-11-28 | 李致真 | The permanent magnet machine rotor and motor of a kind of low magnetism leakage |
| CN208548769U (en) * | 2018-07-23 | 2019-02-26 | 重庆西伟迪磁电动力科技有限公司 | A kind of combination type permanent-magnet rotor |
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| JPH11262206A (en) * | 1998-03-10 | 1999-09-24 | Aichi Emerson Electric Co Ltd | Rotor for electric motor for compressor |
| JP2002233122A (en) * | 2001-02-05 | 2002-08-16 | Matsushita Electric Ind Co Ltd | Outer rotor motor, manufacturing method of the motor, and electric vehicle mounting the motor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020143480A1 (en) * | 2019-01-10 | 2020-07-16 | 广东德昌电机有限公司 | Magnetic core, electric motor having magnetic core, and mower having electric motor |
| CN111431304A (en) * | 2019-01-10 | 2020-07-17 | 广东德昌电机有限公司 | Magnetic core, motor with magnetic core and mower with motor |
| CN109617279A (en) * | 2019-01-18 | 2019-04-12 | 江苏大学 | A kind of built-in hybrid permanent magnet motor rotor construction of modularization |
| CN109617279B (en) * | 2019-01-18 | 2020-11-03 | 江苏大学 | Modular built-in hybrid permanent magnet motor rotor structure |
| CN110212667A (en) * | 2019-06-14 | 2019-09-06 | 安徽大学 | A kind of permanent magnet machine rotor core construction |
| CN111668949A (en) * | 2020-05-29 | 2020-09-15 | 宁波德昌科技有限公司 | Rotor for rotary motor and manufacturing method thereof |
| CN112421906A (en) * | 2020-12-18 | 2021-02-26 | 山东理工大学 | Production method of unilateral retaining modular driving motor rotor with bat-shaped groove |
| CN112436689A (en) * | 2020-12-18 | 2021-03-02 | 山东理工大学 | Production method of nested drive motor salient pole rotor with backstop function |
| CN112421906B (en) * | 2020-12-18 | 2022-06-21 | 山东理工大学 | Production method of unilateral retaining modular driving motor rotor with bat-shaped groove |
| EP4050765A1 (en) * | 2021-02-26 | 2022-08-31 | Hefei Jee Power Systems Co., Ltd. | Rotor sheet |
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