CN110112877A - Motor capable of improving power density and preventing rotor from generating vibration - Google Patents
Motor capable of improving power density and preventing rotor from generating vibration Download PDFInfo
- Publication number
- CN110112877A CN110112877A CN201910570102.XA CN201910570102A CN110112877A CN 110112877 A CN110112877 A CN 110112877A CN 201910570102 A CN201910570102 A CN 201910570102A CN 110112877 A CN110112877 A CN 110112877A
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- China
- Prior art keywords
- motor
- stator
- rotor
- stator tooth
- tooth
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims description 34
- 210000000515 tooth Anatomy 0.000 claims description 33
- 239000000203 mixture Substances 0.000 claims description 8
- 238000009826 distribution Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008111 motor development Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 230000007704 transition Effects 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
-
- 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
- H02K1/2793—Rotors axially facing stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a motor capable of improving power density and preventing a rotor from generating vibration. According to the invention, the rotor is arranged between the two stators, and the rotor realizes magnetic circuit coupling of the two stators, so that the structure of the motor is more compact, the axial height is smaller, the rotor utilization rate is higher, and the power density of the motor is higher. And the distribution distance of the rotor is shorter, so that the vibration and the noise of the motor can be effectively reduced.
Description
Technical field
The present invention relates to field of motor manufacturing more particularly to it is a kind of power density can be improved and prevent rotor generate vibration
Motor.
Background technique
With government's energy saving policy guiding, market development demand, household electrical appliance blower direct currentization gradually becomes trend, at present
Industry is radial magnetic field structure (i.e. magnetic field is distributed along rotor radial) using brushless motor and power of motor density is lower, i.e. material
Expect that utilization rate is low.By the rise in price of motor raw material market, high power density motor becomes brshless DC motor development trend.Electricity
Machine is with its performance advantage, gradually expanded application.Although motor has the characteristics that high efficiency, high power density, the prior art
Middle power density is high, the distance between rotor is excessive, is also easy to produce vibration and causes noise.
Summary of the invention
In order to solve, power density in the prior art is high, the distance between rotor is excessive is also easy to produce vibration and causes noise
Defect, the invention proposes a kind of motors that power density can be improved and prevent rotor from generating vibration.
The invention proposes a kind of motors, and including axially disposed rotor and two stators, the rotor is arranged two
Between a stator.
In one embodiment, rotor includes: two axially disposed permanent magnets and is arranged between two permanent magnets
Two magnetic conductive disks.
In another embodiment, rotor is permanent magnet.
Stator include: stator yoke, along the stator yoke circumferentially spaced multiple stator tooths and be set in stator tooth
On winding.
Preferably, one end of each stator tooth is equipped with through slot, and the stator yoke is equipped with equal with stator tooth quantity
Interconnecting piece, each stator tooth is by the pass trough instrumentation on corresponding interconnecting piece.
Further, two of the end face stretching of the stator tooth convex to form through slot, and the two sides of the interconnecting piece are to open
Mouth slot, the protrusion are inserted into the open slot.
Further, stator tooth includes the teeth portion axially extended and the tooth boots set on described teeth portion one end close to rotor
Portion, the through slot are set to the teeth portion along the axial other end.
Preferably, two windings of each winding centering is oppositely oriented.
Preferably, composition stator tooth pair is arranged side by side in the stator tooth two-by-two, and the winding cooperation and stator tooth are to two-by-two
Composition winding pair is arranged side by side.
Preferably, each winding passes through in parallel or string to being located in same phase between the winding pair and winding pair
Connection connection.
Preferably, the minimum spacing B of the adjacent stator tooth pair is greater than or equal to the stator tooth of two composition stator tooths pair
Between minimum spacing B.
Compared with prior art, the present invention passes through rotor and realizes two by the way that rotor to be arranged in the centres of two stators
The flux coupled of stator keeps the structure of motor more compact, and axial height is smaller, and rotor utilization rate is higher, power density is higher.
Meanwhile rotor distribution distance is shorter, can reduce motor oscillating and noise.
Detailed description of the invention
Below with reference to embodiment and attached drawing, the present invention is described in detail, in which:
Fig. 1 is the schematic perspective view of motor in the embodiment of the present invention；
Fig. 2 is the schematic perspective view of motor in another embodiment of the present invention；
Fig. 3 is the schematic diagram that stator yoke and stator tooth are split in the embodiment of the present invention；
Fig. 4 is the structure chart of stator yoke in the embodiment of the present invention；
Fig. 5 is the structure chart of stator tooth in the embodiment of the present invention；
Fig. 6 is the plan view of motor in the embodiment of the present invention；
Fig. 7 be the embodiment of the present invention in stator yoke connect with stator tooth after plan view；
Fig. 8 is the plan view that motor hides winding in the embodiment of the present invention；
Fig. 9 is the magnetic pole distribution map of the embodiment of the present invention；
Figure 10 is that stator tooth is fixed in the embodiment of the present invention and winding is to the structure chart of cooperation；
Figure 11 is the plan view of winding pair in the embodiment of the present invention.
Specific embodiment
It should be noted that " circumferential direction " mentioned in the present invention, " axial direction " and " radial direction " refers to stator yoke
Circumferential direction, the axial direction of stator yoke, the radial direction of stator yoke are defined with " circumferential direction ", " axial direction " and " radial direction " of conventional motor stator yoke
It is identical.
As shown in Figure 1 and Figure 2, the motor proposed in the embodiment of the present invention is axial-flux electric machine, which includes along axis
To the rotor 4 of setting and two stators, in figure, direction X represents axial, and direction Y is represented radially.Wherein, stator is using tooth, yoke point
From structure, stator includes stator yoke 1, the winding 3 of multiple stator tooths 2 and set on the stator teeth, and stator tooth 2 is located at stator yoke 1
Side, and along the circumferentially-spaced of stator yoke 1, stator yoke 1 is made of 1 punching of multiple stator yokes laminated along axial direction, each stator
Tooth 2 is made of the identical stator tooth punching of the multiple shapes radially laminated.Rotor 4 is axially disposed to be located at two stators
Flux coupled between unit is realized by rotor 4 in centre, and structure is more compact, and axial height is smaller, and rotor utilization rate is higher, function
Rate density is higher.Meanwhile rotor distribution distance is shorter, can reduce motor oscillating and noise.
In the particular embodiment, rotor 4 includes: two axially disposed permanent magnets and is arranged in two permanent magnets 42
Between with the one-to-one magnetic conductive disk 41 of permanent magnet, can also be reduced to only be arranged a permanent magnet 41, be not necessarily to magnetic conductive disk
Pass through flux coupled between rotor realization unit.It saves material and simplifies technique.Wherein, permanent magnet 41 can be magnet ring or magnetic shoe.
In the present invention, stator tooth 2 and stator yoke 1 are by being engaged by clamping, so that stator yoke 1 is connected to stator tooth 2, realize
Tooth, yoke communicated magnetic circuit.
As shown in Fig. 3 to 5, in the particular embodiment, each stator tooth 2 includes the teeth portion 21 axially extended and is set to
Along the tooth boot portion 22 of axial one end, tooth boot portion 22 extends teeth portion 21 along perpendicular to axially direction, the end axially extended
Face is plane, and the both sides of tooth boot portion 22 are round-corner transition, and teeth portion 21 is extended at the both ends of tooth boot portion 22, and teeth portion 21 is along axial direction
The other end be equipped with through slot 211.
Through slot 211 extends along axial direction to the end face of one end of each stator tooth 2, and the two sides of through slot 211 are protrusion 212, convex
It plays 212 to axially extend, such through slot 211 and the protrusion 212 of 211 two sides of through slot form " recessed " word structure.Interconnecting piece 22
Two sides are open slot 12, and protrusion 212 is inserted into open slot 12, and the open slot 12 of the side of interconnecting piece 11 is radially to stator yoke
1 lateral surface extends, and the open slot 12 of the other side of interconnecting piece 11 radially extends to the medial surface of stator yoke 1, connects in this way
The open slot 12 of portion 11 and 11 two sides of interconnecting piece forms " work " word structure.In the present embodiment, interconnecting piece 11 is square block, interconnecting piece
11 is concordant along two axial end faces with stator yoke 1 along two axial end faces." recessed " word structure and " work " word structure are by stator
Yoke is connect with stator tooth, realizes that stator yoke is connected to the road of stator tooth.
As shown in fig. 6, the axial face of permanent magnet 42 face opposite with the tooth boot portion 22 of stator tooth 2 is all plane, and mutually
In parallel, there are high air gap deltas such as the contour planes of axial direction, contour air gap can guarantee motor tooth socket at interval between two planes
Torque and torque pulsation are smaller, while can guarantee that motor performance is higher, primarily to while guaranteeing motor performance, also
The stability and reliability of motor operation can be promoted.
As shown in Figs. 7-9, permanent magnet 42 magnetizes along axial sine and is α per extremely fan-shaped, fan-shaped angle, and α=360 °/
2P(2P is number of poles), two adjacent fan-shaped polarity are opposite.When two permanent magnets are arranged, the magnetic pole of two permanent magnets is along axis
To corresponding to completely one by one, polarity is opposite.
The MgO-ZrO_2 brick of motor is q, and the slot number of motor is Z, and the number of poles of motor is 2P, and the number of phases of motor is m, and electric
Machine meets following formula:
。
Stator yoke can be with overall structure, vertical bar shaped structure and piece shape structure.The number of poles of number of stator slots and motor is preferential
It is even number.
Stator yoke 1 is in regular polygon (parameter of regular polygon=stator tooth logarithm), is arranged one on each side of stator yoke 1
A stator tooth is to 5, and the inscribed circle radius of stator yoke 1 is H, and the width (width of the tooth boot portion of i.e. two stator tooths of tooth boot portion
In addition the minimum spacing A between the tooth boot portion of two stator tooths) it is L, L meets following formula:
, it is generally preferable to A=B, L value are optimal between 0.5-1mm.
As shown in Figs. 9 to 11, composition stator tooth is arranged side by side to 5 in stator tooth 2 two-by-two, and two stator teeths of stator tooth pair are flat
Row, each stator tooth are circumferentially arranged in angle β between 5, wherein β=360 °/stator tooth logarithm N.
Each stator tooth is A to the minimum spacing between two stator tooths 2 in 5, and two neighboring stator tooth is between 5
Minimum spacing is B, and A≤B, can reduce motor cogging torque, reduce leakage field between cog and tooth pair, promote motor performance.It is excellent
A=B is selected, effect is best.
In the particular embodiment, winding cooperation and stator tooth to composition winding pair is arranged side by side two-by-two, and winding is to correspondence
Stator tooth arranges in a ring to 5 position, and two windings for forming winding pair are same phase, and each stator tooth is corresponding to 5
It is the equal turn numbers of winding pair, oppositely oriented, to make winding to the winding efficiency of winding can be improved, together by a coiling coiling
When convenient for winding pair installation.Two windings of each winding centering by connecting in parallel or series, the winding pair in same phase
It can be by connecting in parallel or series between winding pair, same phase winding realizes correspondence to by modes such as PCB circuit board, leads
The adjusting and variation of motor induced potential size are realized in connection.
The installation process of motor in the present invention are as follows: punching is laminated into stator tooth and stator yoke by stamping die；Utilize coiling
Equipment coiling annular concentratred winding；Each pair of winding is set in the teeth portion of each stator tooth pair；By each stator tooth to according to
It is secondary to be packed into corresponding stator yoke, it is fixed；Using the techniques curing molding such as injection molding, encapsulating, stator is formed；By magnet ring or sector magnet
Valley fastens with glue onto disk, or magnet ring or the injection molding of magnet steel and magnetic conductive disk are formed as one and are turned using plastics such as nylon
Son；By rotor assembly on stator corresponding position, motor is formed.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of motor, including axially disposed rotor (4) and two stators, which is characterized in that rotor (4) setting exists
Between two stators.
2. motor as described in claim 1, which is characterized in that the rotor (4) includes: two axially disposed permanent magnets
(42) and two magnetic conductive disks (41) between two permanent magnets (42) are set.
3. motor as described in claim 1, which is characterized in that the rotor includes: permanent magnet (42).
4. motor as described in claim 1, which is characterized in that the stator includes: stator yoke (1), along the stator yoke (1)
Circumferentially spaced multiple stator tooths (2) and cover the winding (3) on stator tooth (2).
5. motor as claimed in claim 4, which is characterized in that one end of each stator tooth (2) is equipped with through slot (211),
The stator yoke (1) is equipped with the interconnecting piece (11) equal with stator tooth quantity, and each stator tooth (2) passes through the through slot
(211) it is inserted on corresponding interconnecting piece (11).
6. motor as claimed in claim 5, which is characterized in that two protrusions (212) that the end face of the stator tooth (2) is stretched out
It is formed through slot (211), the two sides of the interconnecting piece (11) are open slot (12), and the protrusion (212) is inserted into the open slot
(12) in.
7. motor as claimed in claim 5, which is characterized in that the stator tooth (2) includes the teeth portion (21) axially extended
With the tooth boot portion (22) set on described teeth portion one end close to rotor (4), the through slot (211) is set to the teeth portion (21) along axial direction
The other end.
8. motor as claimed in claim 4, which is characterized in that composition stator tooth pair is arranged side by side in the stator tooth (2) two-by-two
(5), winding (3) the cooperation stator tooth (5) is arranged side by side two-by-two composition winding pair.
9. motor as claimed in claim 8, which is characterized in that the rotation direction phase of two windings (3) of each winding centering
Instead.
10. motor as claimed in claim 8, which is characterized in that the adjacent stator tooth minimum spacing B of (5) is greater than or
Equal to two composition stator tooths are to the minimum spacing B between the stator tooth (2) of (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910570102.XA CN110112877A (en) | 2019-06-27 | 2019-06-27 | Motor capable of improving power density and preventing rotor from generating vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910570102.XA CN110112877A (en) | 2019-06-27 | 2019-06-27 | Motor capable of improving power density and preventing rotor from generating vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110112877A true CN110112877A (en) | 2019-08-09 |
Family
ID=67495843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910570102.XA Pending CN110112877A (en) | 2019-06-27 | 2019-06-27 | Motor capable of improving power density and preventing rotor from generating vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110112877A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009095088A (en) * | 2007-10-04 | 2009-04-30 | Honda Motor Co Ltd | Axial gap motor |
| CN104716762A (en) * | 2013-12-13 | 2015-06-17 | 陈国芳 | Motor with no silicon steel sheet |
| CN205231872U (en) * | 2015-12-04 | 2016-05-11 | 新安乃达驱动技术(上海)有限公司 | Servo motor's novel stator and servo motor |
| CN208142940U (en) * | 2018-03-05 | 2018-11-23 | 哈尔滨理工大学 | A kind of surface-mounted permanent magnet machine stator structure that stator rabbet is not wide |
| CN109302027A (en) * | 2018-10-31 | 2019-02-01 | 淮安威灵电机制造有限公司 | Transverse flux motor |
-
2019
- 2019-06-27 CN CN201910570102.XA patent/CN110112877A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009095088A (en) * | 2007-10-04 | 2009-04-30 | Honda Motor Co Ltd | Axial gap motor |
| CN104716762A (en) * | 2013-12-13 | 2015-06-17 | 陈国芳 | Motor with no silicon steel sheet |
| CN205231872U (en) * | 2015-12-04 | 2016-05-11 | 新安乃达驱动技术(上海)有限公司 | Servo motor's novel stator and servo motor |
| CN208142940U (en) * | 2018-03-05 | 2018-11-23 | 哈尔滨理工大学 | A kind of surface-mounted permanent magnet machine stator structure that stator rabbet is not wide |
| CN109302027A (en) * | 2018-10-31 | 2019-02-01 | 淮安威灵电机制造有限公司 | Transverse flux motor |
Non-Patent Citations (1)
| Title |
|---|
| 陈硕等: "《槽口宽度对伺服永磁电机齿槽转矩的影响研究》", 《湖南工业大学学报》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190809 |
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| RJ01 | Rejection of invention patent application after publication |