CN107425620B - A kind of assembling iron core stator and bilateral outer rotor disc type permanent magnet synchronous electric motor - Google Patents
A kind of assembling iron core stator and bilateral outer rotor disc type permanent magnet synchronous electric motor Download PDFInfo
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- CN107425620B CN107425620B CN201710765385.4A CN201710765385A CN107425620B CN 107425620 B CN107425620 B CN 107425620B CN 201710765385 A CN201710765385 A CN 201710765385A CN 107425620 B CN107425620 B CN 107425620B
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- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- 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
- H02K1/2786—Outer rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a kind of assembling iron core stator and bilateral outer rotor disc type permanent magnet synchronous electric motors, are made of assembling iron core stator and the bilateral disc type outer rotor with inverted U-shaped ring section structure.Wherein, the assembling iron core stator includes inner ring iron core and outer ring iron core, by forming whole stator structure in the inner ring surface of the outer ring surface insertion outer ring iron core of inner ring iron core；The assembling iron core stator axially has the same coil of the winding slot and insertion that connect on ring section；On the inside of the inverted U-shaped ring section structure of the bilateral outer rotor disk of the motor, it is evenly distributed with permanent magnet corresponding with the assembling iron core stator winding.Invention increases the permanent magnet cooperations on the periphery of outer ring iron core stator and outer rotor, equivalent to increase one group of motor, while reducing the outer end edges quantity of each winding coil, and motor torque density and power density are big, and copper loss is small, high-efficient, easy to control.
Description
Technical field
The invention belongs to motor fields, more particularly, to a kind of assembling iron core stator and bilateral outer rotor desk permanent-magnet
Synchronous motor.
Background technique
For disc type electric machine since axial dimension is small, radial dimension is big, the winding of receiving is more, and power density is big, energy index
Height, the straight drive characteristic with low speed high torque, directly drives joint, electric wheel, wind-power electricity generation, household electrical appliance, warship in robot
It is applied in the fields such as rudder for ship machine.
Wherein, the bilateral outer rotor disc type permanent magnet synchronous electric motor of single stator of ribbon core also has the advantage that due to stator
Iron core provides high permeability magnetic circuit, and motor energy index is higher than iron-core-free type；The stator core of unilateral dish structure causes very
Strong axial ferromagnetic attraction force influences the stability of motor operation, and bilateral outer rotor dish structure can be such that axial ferromagnetic attraction force obtains
Balance；Bilateral outer rotor can provide the energy index of nearly 2 times of unilateral dish structure, and power density is bigger；Outer-rotor structure because with
It is conveniently connected by drive member, simplifies drive mechanism.Therefore, bilateral outer rotor disc type permanent magnet synchronous electric motor is a kind of with application
The motor type of potentiality.
But there is also more prominent technical problems for existing bilateral outer rotor disc type permanent magnet synchronous electric motor.On the one hand, face
To direct-driving type application, due to without slow down, speed change gear carries out moment amplification and speed is adjusted, power density to motor and
More stringent requirements are proposed for torque density, and is limited at present by permanent-magnet material, electrical material, Drive Control Technique level,
Disc type electric machine and practical engineering application demand still have larger gap on power and torque density.On the other hand, due to stator core
It is built-in, the cooling provision that the motor feels hot, built in palpus design is caused to its copper loss and iron loss, further increases motor axial direction ruler
It is very little, reduce energy index.
Therefore, the energy index for effectively improving motor plays a significant role the application range for expanding motor.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of assembling iron core stators and bilateral outer
Rotor disc type permanent magnet synchronous motor, its object is to make full use of motor radial structure space condition, the power for improving motor is close
Degree and torque density reduce copper loss, improve electric efficiency.
To achieve the goals above, the present invention provides a kind of assembling iron core stators, comprising: inner ring iron core, outer ring iron core
With multiple winding coils；Outer ring iron core central region axially offers through-hole, and inner ring iron core is coaxially installed in the through-hole；It is special
Sign is,
The outer circumference surface of outer ring iron core is equipped with the first winding slot that is parallel to each other and being connected to outer ring iron core both ends of the surface；
, position one-to-one second coiling equal with the first coiling slot number is offered in the both ends of the surface of inner ring iron core
Slot, and the second winding slot connects with the first winding slot；
Each winding coil includes two the first winding portion, four the second winding portion and two tertiary winding portions；Same
In one winding coil, two the first winding portion are parallel to each other, and the both ends of each first winding portion are separately connected second winding
The end of the head end in portion, the second ipsilateral winding portion of two the first winding portion passes through a tertiary winding portion connection；First winding
Portion is installed in the first winding slot, and the second winding portion is installed in the second winding slot.
Further, inner ring iron core is put together backwards by two pieces of cyclic annular iron cores.
Further, the first winding slot, the second winding slot are straight trough, are perhaps skewed slot or for straight trough and skewed slot
Combination；Wherein, extending direction is parallel to the axial direction of outer ring iron core or is known as straight trough along the radial slot of inner ring iron core, no
Then, referred to as skewed slot.
To achieve the goals above, the present invention also provides a kind of disc type permanent magnet synchronous electric motors, including aforementioned combinatorial iron core
Stator.
Further, aforementioned disc type permanent magnet synchronous electric motor includes bilateral outer rotor；Bilateral outer rotor has cylindrical cavity,
Assembling iron core stator is coaxially installed in cylindrical cavity；It is equipped on the cylindrical surface of cylindrical cavity and two end faces and winding
The permanent magnet of coil corresponding matching.
Further, aforementioned disc type permanent magnet synchronous electric motor includes polygon outer rotor；Polygon outer rotor includes at least two same
The cylindrical cavity of axis setting, is equipped with an assembling iron core stator in each cylindrical cavity；Wherein, each cylindrical cavity
Cylindrical surface and two end faces on be equipped with permanent magnet with the winding coil corresponding matching of its internal combination iron core stator.
Compared with prior art, technical solution of the present invention has the following beneficial effects:
(1) present invention increases outer ring core structure on the basis of conventional combination iron core stator and is mounted on outer ring iron
The first winding portion on cored structure can cooperate with the first permanent magnet circumferentially of bilateral outer rotor, constitute newly-increased
The radial sub-motor of one added can improve motor to more take full advantage of the radial space condition of bilateral external rotor electric machine
Output power and torque index；
(2) in the present invention, assembling iron core stator inner loop iron core has the second winding slot, the with outer ring iron core excircle
One winding slot connects, so as to be embedded in same winding coil；Therefore, on the one hand make existing bilateral outer rotor disc type motor
Each winding coil is reduced to 2 outer end edges by 4 outer end edges, and winding material dosage and copper loss are reduced, and significantly improves motor effect
Rate；On the other hand, there is unified winding in the outer ring iron core of motor stator of the invention and the both ends of the surface of inner ring iron core, obtains
Unified drive control structure, is easy to control；
(3) in the present invention, the winding slot in assembling iron core stator both ends of the surface and periphery can be straight trough, skewed slot or straight trough
Further improve torque, axial direction and diameter with the combination of skewed slot etc. convenient for passing through winding slot combining form and slot cross-section parameter designing
To equal fluctuations, to improve motor dynamics performance；
(4) in the present invention, more outer rotor multiple stators coil motors use the assembling iron core stator structure, can effectively mention
The indexs such as its high power, torque, efficiency.
Detailed description of the invention
Fig. 1 is the structure principle chart of motor；
Fig. 2 is the structure chart of one motor of embodiment, in which: (a) general assembly structural schematic diagram；(b) block diagram is split；
Fig. 3 is the fractionation structural representation of one assembling iron core of embodiment；
Fig. 4 is one winding coil structure schematic diagram of embodiment；
Fig. 5 is one winding coil scheme of installation of embodiment；
Fig. 6 is two winding coil scheme of installation of embodiment；
Fig. 7 is the assembling iron core structure chart of three inner ring iron core chute of embodiment, in which: (a) floor map；(b) three-dimensional
Structural schematic diagram；
Fig. 8 is the structure principle chart of five or three outer rotor of embodiment, two stator motor.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which: 1- assembling iron core is fixed
Son, the bilateral outer rotor of 2-, 3- connector, 4- inner ring iron core, 5- outer ring iron core, the first permanent magnet of 6-, the second permanent magnet of 7-, 8- around
Group coil, the second winding slot of 41-, the first winding slot of 51-, the first winding portion of 81-, the second winding portion of 82-, 83- tertiary winding portion.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Please refer to Fig. 1~4, assembling iron core stator of the invention and bilateral outer rotor disc type permanent magnet synchronous electric motor general plotting
It is as follows:
Assembling iron core stator 1 includes: inner ring iron core 4, outer ring iron core 5 and multiple winding coils 8.5 middle region of outer ring iron core
Domain axially offers through-hole, and inner ring iron core 4 is coaxially arranged with outer ring iron core 5 and is located in the through-hole.The excircle of outer ring iron core 5
Face is equipped with the first winding slot 51 that is parallel to each other and being connected to 5 both ends of the surface of outer ring iron core.It is opened up in the both ends of the surface of inner ring iron core 4
There are, position one-to-one second winding slot 41 equal with 51 quantity of the first winding slot, and the second winding slot 41 and the first coiling
Slot 51 connects.Each winding coil 8 includes two the first winding portion, 81, four the second winding portion 82 and two tertiary windings
Portion 83.In same winding coil 8, the both ends of each first winding portion 81 are separately connected the head end of second winding portion 82,
Two ipsilateral 82 ends of the second winding portion of two the first winding portion 81 are connected by a tertiary winding portion 83；First winding portion
81 are installed in the first winding slot 51, and the second winding portion 82 is installed in the second winding slot 52.
Bilateral outer rotor 2 has cylindrical cavity, and assembling iron core stator 1 is coaxially installed in cylindrical cavity.It is cylindric
The permanent magnet with 8 Corresponding matching of winding coil is equipped on the cylindrical surface of cavity and two end faces.
In the following, being described further in conjunction with specific embodiments to the present invention.
[embodiment one]
A kind of assembling iron core stator of the invention and bilateral outer rotor disc type permanent magnet synchronous electric motor, as shown in fig. 1~fig. 5,
It is made of the bilateral outer rotor 2 with assembling iron core stator 1 and with inverted U-shaped ring section (i.e. section shown in the visual angle Fig. 1) structure.
Wherein, assembling iron core stator 1 includes inner ring iron core 4 and outer ring iron core 5, is embedded in outer ring iron core 5 by the outer ring surface of inner ring iron core 4
In inner ring surface, that is, be installed on inner ring iron core 4 in the through-hole of outer ring iron core 5, form whole assembling iron core by connector 3
Stator 1；Assembling iron core stator 1 axially has the same winding coil 8 of the winding slot and insertion that connect on ring section；It is bilateral
On the inside of the inverted U-shaped ring section structure of outer rotor 2, it is evenly distributed with permanent magnet corresponding with winding coil 8.
In the present embodiment, permanent magnet is divided into the first permanent magnet 6 and the second permanent magnet 7.First permanent magnet 6 and outer ring iron core
The first winding slot 51 on outer circumference surface and the first winding portion 81 in slot are corresponding.Second permanent magnet 7 and inner ring iron core both ends
The second winding slot 41 on face and the second winding portion 82 in slot are corresponding.
It is uniformly distributed the second permanent magnet 7 on the axial end face of the inner ring iron core 4 of assembling iron core stator 1 and bilateral outer rotor 2,
Two disc type axial direction sub-motors have been respectively constituted in the left and right sides of assembling iron core stator 1；Meanwhile outer ring iron core 5 and bilateral outer
The first permanent magnet 6 being distributed in the apical ring face of rotor 2 matches, and constitutes the radial sub-motor newly increased, thus effectively benefit
With bilateral external rotor electric machine steric requirements, the power and torque output capability of motor can be effectively improved.
As shown in Figure 3,4, in the present embodiment, the first winding slot 51 and the second winding slot 41 are straight trough.Such as Fig. 2 institute
Show, is mutually passed through on the second winding slot 41 on inner ring iron core 4 and the first winding slot 51 on outer ring iron core 5 axially ring section
Logical, what is be thus embedded on the axial rings section of assembling iron core stator 1 is same winding coil 8.Therefore, with the bilateral outer rotor of tradition
Disc type electric machine is compared, and 4 outer end edges of each winding coil in both ends of the surface are reduced to 2 by the present invention, winding material dosage
It is reduced with copper loss, significantly improves electric efficiency；Meanwhile motor stator of the invention each anchor ring and end face on have it is unified around
Group, obtains unified drive control structure, and control is easy.
In addition, as shown in figure 3, the inner ring iron core of the present embodiment is assembled by the symmetrical iron core disk of two shape designs.
In the present embodiment, two iron core disks are symmetrical about assem-bly facing.
In the present embodiment, winding coil 8 shown in Fig. 2~Fig. 3 uses centralized winding construction, wherein every two
A the first adjacent winding slot 51 corresponds two the first winding portion 81 installed in the same winding coil 8, with this two
Adjacent corresponding second winding slot 41 of the first winding slot 51 corresponds the second winding portion installed in the same winding coil 8
82。
As shown in figure 5, the assembling schematic diagram of the winding coil 8 for the present embodiment.To have chosen office in Fig. 5 convenient for illustrating
Cage structure is as example.In local structure shown in Fig. 5, drawn by four the first winding slots 51 and its corresponding second winding slot 41
Three poles are separated, intermediate pole does not install winding coil 8, and two of two sides extremely respectively install a winding coil 8.Each second
It is mounted with second winding portion 82 in winding slot 41, first winding portion 81 is mounted in each first winding slot, due to
Visual angle reason, the first winding portion 81 are blocked, therefore not shown.
[embodiment two]
As shown in fig. 6, the winding coil 8 of the present embodiment is also using centralized winding construction, it is main with embodiment one
Difference is that three poles that four the first winding slots 51 and its corresponding second winding slot 41 mark off have been respectively mounted winding coil
8.Two the first winding portion 81 from different winding coils 8 are mounted in each first winding slot 51, due to visual angle original
Cause, the first winding portion 81 are blocked, therefore not shown.It is mounted in each second winding slot 41 from different winding coils 8
Two the second winding portion 82.
(not shown) in other embodiments, winding coil 8 can also be using distributed winding constructions.
No matter centralized winding or distributed winding, according to different stator poles distributed combination modes, winding coil 8 and
First winding slot 51, the second winding slot 41 assembled relation be not quite similar, only need to meet the first winding portion 81 be installed on first around
Wire casing 51 is interior, the second winding portion 82 is installed in the second winding slot 41.It is several as being equipped in single first winding slot 51
First winding portion 81 of a winding coil 8, and without concrete restriction, according to the distribution of the winding slot of actual design and winding coil 8
Wiring arrangement setting, the relationship of the second winding slot 51 and the second winding portion 82 is similarly.
[embodiment three]
Winding slot on assembling iron core stator 1 can be the combination of straight trough, skewed slot or straight trough and skewed slot etc..As shown in fig. 7,
The difference between this embodiment and the first embodiment lies in the second winding slot 41 on inner ring iron core 4 is skewed slot, on outer ring iron core 5 the
One winding slot 51 is straight trough.By winding slot combining form and slot cross-section parameter designing, it is easy to improve torque, axially and radially etc.
Fluctuation improves motor dynamics performance.
[example IV]
The embodiment of the present invention four (not shown) is compared with embodiment one, although the second winding slot 41 on inner ring iron core 4
It is still straight trough, but the first winding slot 51 on outer ring iron core 5 is skewed slot.In addition, the second winding slot in 4 both ends of the surface of inner ring iron core
41 arrangement mode is still the same as example 1, but since the first winding slot 51 tilts, the second winding slot 41 is held at two
Position on face can be staggered certain angle.
It is to be by the advantage of the symmetrical iron core disk of two shape designs by inner ring core design, is in the first winding slot 51
In the case where straight trough or skewed slot, iron core disk can be general, it is only necessary to replace corresponding outer ring iron core 5, and corresponding adjustment two
The relative rotation angle of iron core disk.For example, embodiment one is converted to example IV, it is only necessary on the basis of embodiment one
On by the outer ring iron core 5 for changing outer ring iron core 5 and being changed to skewed slot of straight trough, then accordingly adjustment two iron core disks relative rotation angle
?.
Certainly, in other embodiments, inner ring iron core 4 is also possible to be integrally formed.
[embodiment five]
According to different structure space conditions, motor of the invention may be designed as more outer rotors with assembling iron core stator
Multiple stators coil motor configuration.It is illustrated in figure 8 the structure principle chart of three outer rotors, two stator disc type permanent magnet synchronous motor, by two
Assembling iron core stator 1 and three outer rotor disks 2 form.It is extended in this structure basis, available N outer rotor N-1 is fixed
Sub- disc type permanent magnet synchronous electric motor, N >=2, as N=2, that is, bilateral outer rotor disc type permanent magnet synchronous electric motor shown in FIG. 1.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of assembling iron core stator, comprising: multiple winding coils, each winding coil include two the first winding portion, four
A second winding portion and two tertiary winding portions；In same winding coil, two the first winding portion are parallel to each other, and each first
The both ends of winding portion are separately connected the head end of second winding portion, the end of the second ipsilateral winding portion of two the first winding portion
It is connected by a tertiary winding portion；It is characterized in that, further including inner ring iron core and outer ring iron core:
Outer ring iron core central region axially offers through-hole, and inner ring iron core is coaxially installed in the through-hole；The outer circle of outer ring iron core
Circumferential surface is equipped with the first winding slot that is parallel to each other and being connected to outer ring iron core both ends of the surface；
, position one-to-one second winding slot equal with the first coiling slot number is offered in the both ends of the surface of inner ring iron core,
And second winding slot connect with the first winding slot；
First winding portion is installed in the first winding slot, and the second winding portion is installed in the second winding slot.
2. a kind of assembling iron core stator as described in claim 1, which is characterized in that inner ring iron core by two pieces of cyclic annular iron cores backwards
It is put together.
3. a kind of assembling iron core stator as claimed in claim 1 or 2, which is characterized in that the first winding slot, the second winding slot are equal
It is perhaps skewed slot or the combination for straight trough and skewed slot for straight trough；Wherein, extending direction is parallel to the axial direction of outer ring iron core
Or it is known as straight trough along the radial slot of inner ring iron core, and otherwise, referred to as skewed slot.
4. a kind of disc type permanent magnet synchronous electric motor, which is characterized in that including assembling iron core stator of any of claims 1 or 2.
5. a kind of disc type permanent magnet synchronous electric motor as claimed in claim 4, which is characterized in that including bilateral outer rotor；It is bilateral outer
Rotor has cylindrical cavity, and assembling iron core stator is coaxially installed in cylindrical cavity；The cylindrical surface of cylindrical cavity and two
The permanent magnet with winding coil corresponding matching is equipped on a end face.
6. a kind of disc type permanent magnet synchronous electric motor as claimed in claim 4, which is characterized in that including polygon outer rotor；It is polygon
Outer rotor includes the cylindrical cavity of at least two coaxial arrangements, and it is fixed that an assembling iron core is equipped in each cylindrical cavity
Son；Wherein, the winding wire with its internal combination iron core stator is equipped on the cylindrical surface of each cylindrical cavity and two end faces
Enclose the permanent magnet of corresponding matching.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710765385.4A CN107425620B (en) | 2017-08-30 | 2017-08-30 | A kind of assembling iron core stator and bilateral outer rotor disc type permanent magnet synchronous electric motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710765385.4A CN107425620B (en) | 2017-08-30 | 2017-08-30 | A kind of assembling iron core stator and bilateral outer rotor disc type permanent magnet synchronous electric motor |
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| Publication Number | Publication Date |
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| CN107425620A CN107425620A (en) | 2017-12-01 |
| CN107425620B true CN107425620B (en) | 2019-06-07 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112072881A (en) * | 2020-08-31 | 2020-12-11 | 珠海格力电器股份有限公司 | Motor and compressor |
| CN112510946B (en) * | 2020-11-20 | 2021-09-24 | 哈尔滨工业大学 | High-power-density axial transverse flux outer rotor permanent magnet motor for aerospace field |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004260988A (en) * | 2003-02-27 | 2004-09-16 | Lg Electronics Inc | Stator assembly of motor and its producing process |
| CN101345440A (en) * | 2008-05-21 | 2009-01-14 | 哈尔滨工业大学 | Permanent magnet motor with shaft radial folding winding |
| CN204721186U (en) * | 2015-06-12 | 2015-10-21 | 华中科技大学 | A kind of axial and radial mixing behavior magnetic flow permanent magnet motor |
| CN205882877U (en) * | 2016-07-04 | 2017-01-11 | 湖南大学 | Mix magnetic circuit driving motor |
-
2017
- 2017-08-30 CN CN201710765385.4A patent/CN107425620B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004260988A (en) * | 2003-02-27 | 2004-09-16 | Lg Electronics Inc | Stator assembly of motor and its producing process |
| CN101345440A (en) * | 2008-05-21 | 2009-01-14 | 哈尔滨工业大学 | Permanent magnet motor with shaft radial folding winding |
| CN204721186U (en) * | 2015-06-12 | 2015-10-21 | 华中科技大学 | A kind of axial and radial mixing behavior magnetic flow permanent magnet motor |
| CN205882877U (en) * | 2016-07-04 | 2017-01-11 | 湖南大学 | Mix magnetic circuit driving motor |
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