CN110266124A - Stator core and motor - Google Patents
Stator core and motor Download PDFInfo
- Publication number
- CN110266124A CN110266124A CN201910568777.0A CN201910568777A CN110266124A CN 110266124 A CN110266124 A CN 110266124A CN 201910568777 A CN201910568777 A CN 201910568777A CN 110266124 A CN110266124 A CN 110266124A
- Authority
- CN
- China
- Prior art keywords
- stator
- tooth
- motor
- slot
- yoke
- 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.)
- Granted
Links
- 210000000515 tooth Anatomy 0.000 claims description 63
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 238000003475 lamination Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000004804 winding Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004080 punching Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000003781 tooth socket Anatomy 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
- 239000011449 brick Substances 0.000 description 1
- 238000010276 construction Methods 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
- 239000002360 explosive Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 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
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 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
- H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
-
- 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
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a stator core and a motor, wherein the stator core comprises a stator yoke and a plurality of stator teeth, the plurality of stator teeth are arranged at intervals along the circumferential direction of the stator yoke, the plurality of stator teeth are positioned on one side of the stator yoke along the axial direction, the plurality of stator teeth are divided into a plurality of stator tooth pairs, the minimum distance between two stator teeth in each stator tooth pair is A, the minimum distance between two adjacent stator tooth pairs is B, and A is less than or equal to B. According to the invention, because A is less than or equal to B, the cogging torque of the motor can be reduced, the magnetic leakage between teeth and between tooth pairs can be reduced, and the performance of the motor can be improved.
Description
Technical field
The present invention relates to technical field of motors, more particularly to a kind of stator core and 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.Axis
To flux electric machine with its performance advantage, gradually expanded application.
Although axial-flux electric machine has the characteristics that high efficiency, high power density, its magnetic structure leads to stator punching
Iron core production technology is complicated, there are the bottleneck problems such as coiling, constrains the popularization and application of axial-flux electric machine.Traditional axial electricity
The teeth portion of the stator tooth of machine is uniformly distributed along the circumference, and the notch of two neighboring stator tooth is in angle structure, i.e. inside notch is small, outer side slot
It is mouthful big, lead to that motor tooth socket is unevenly distributed and cogging torque is big, influences motor performance.
Summary of the invention
The object of the present invention is to provide a kind of stator core and motors, can reduce motor cogging torque, promote motor
Energy.
The technical solution adopted by the present invention are as follows: a kind of stator core, including stator yoke and multiple stator tooths, Duo Geding are provided
Sub- tooth is provided at circumferentially spaced along stator yoke, and multiple stator tooths are located at the axial side in the stator yoke edge, the multiple fixed
Sub- tooth is divided into multiple stator tooths pair, and the minimum spacing between two stator tooths of each stator tooth centering is A, two neighboring stator
Minimum spacing between tooth pair is B, and A≤B.
One end of each stator tooth is equipped with through slot, and the stator yoke is equipped with the interconnecting piece equal with stator tooth quantity, institute
Each stator tooth is stated by the pass trough instrumentation on corresponding interconnecting piece.
The through slot extends along axial direction to the end face of described one end of each stator tooth.
The two sides of the through slot are protrusion, and the two sides of the interconnecting piece are open slot, and the protrusion is inserted into the opening
In slot.
The protrusion axially extends, and the open slot of the side of the interconnecting piece is radially to the lateral surface of the stator yoke
Extend, the open slot of the other side of the interconnecting piece radially extends to the medial surface of the stator yoke.
Each stator tooth includes the teeth portion axially extended and the tooth boot portion set on the teeth portion along axial one end, described
Tooth boot portion extends along perpendicular to axially direction, and the teeth portion is extended at the both ends of the tooth boot portion, and the through slot is set to
The teeth portion is along the axial other end.
Two stator tooth radial symmetrics of each stator tooth centering.
The present invention also provides a kind of motors, including stator core described above.
The motor further includes rotor, and the rotor is set to the stator tooth along axial close to the one of the tooth boot portion
Side.
The rotor includes magnetic conductive disk and permanent magnet, and the permanent magnet is between the tooth boot portion and the magnetic conductive disk.
The permanent magnet is magnet ring or magnetic shoe.
The present invention uses stator yoke, stator tooth separated structure, and in axial direction lamination, stator tooth are radially square for stator yoke
The promotion of motor performance and power density is realized by axial and radial hybrid combining formula stator core technology to lamination；And
And stator yoke in axial direction lamination, stator tooth radially lamination are matched by the two, realize the simplification of stator core
(conventional axial motor, stator core need to be wound using circumferential, be currently technical bottleneck in technique, because of coiled iron core for production
The iron core perimeter of each circle is different from, and is difficult to realize to process implementings such as trench structure, sizes).In addition, conventional axial magnetic field
The groove profile of iron core is radially distributed, and cannot achieve Automated winding and production, the present invention is using stator yoke, stator tooth separation knot
Structure, coiling can not be influenced by core structure, and independent coiling may be implemented, and will be wound around being assembled on corresponding stator tooth, greatly
Width simplifies wire winding and current techniques bottleneck.Due to A≤B, motor cogging torque can be reduced, reduces and is leaked between cog and tooth pair
Magnetic promotes motor performance.
Detailed description of the invention
Fig. 1 is the structure chart of motor in the embodiment of the present invention.
Fig. 2 is the explosive view of motor in the 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 tooth in the embodiment of the present invention.
Fig. 5 is the structure chart of stator yoke in the embodiment of the present invention.
Fig. 6 be the embodiment of the present invention in stator yoke connect with stator tooth after plan view.
Fig. 7 is the construction profile of motor in the embodiment of the present invention.
Specific embodiment
As depicted in figs. 1 and 2, the motor proposed in present invention implementation, which is axial-flux electric machine, which includes
Stator and rotor 4, stator include stator core and stator winding 3.Stator core includes stator yoke 1 and multiple stator tooths 2, stator
Stator winding 3 is wound on tooth 2.In figure, direction X is represented axially, and direction Y represents radial.
Circumferential direction described below, the circumferential direction, the axial direction of stator yoke and the stator yoke that axially and radially refer to stator yoke
It is radial, it is defined with the radial direction of the circumferential direction of conventional motor stator yoke, the axial direction of stator yoke and stator yoke identical.
For stator yoke 1 by forming along axially stacking multiple stator yoke punchings, each stator tooth 2 is multiple by what is be radially superimposed
The identical stator tooth punching composition of shape, multiple being provided at circumferentially spaced along stator yoke 1 of stator tooth 2, and multiple stator tooths 2 are located at
Stator yoke 1 is along axial side.Using stator yoke, stator tooth separated structure, and stator yoke in axial direction lamination, stator tooth edge
Radial direction lamination realizes motor performance and power density by axial with radial hybrid combining formula stator core technology
It is promoted；And stator yoke in axial direction lamination, stator tooth radially lamination are matched by the two, realize stator iron
(conventional axial motor, stator core need to be wound using circumferential, be currently technical bottleneck in technique, because of volume for the production that simplifies of core
The iron core perimeter of the wound each circle of iron core is different from, and is difficult to realize to process implementings such as trench structure, sizes).In addition, traditional
The groove profile of axial magnetic field iron core is radially distributed, and cannot achieve Automated winding and production, and the present invention uses stator yoke, stator tooth
Separated structure, coiling can not be influenced by core structure, independent coiling may be implemented, and will be wound around being assembled into corresponding stator tooth
On, significantly simplify wire winding and current techniques bottleneck.
As shown in figure 3, in order to be easy to control the height of stator tooth during installation, one end of each stator tooth 2 is equipped with through slot
211, stator yoke 1 is equipped with the interconnecting piece 11 equal with 2 quantity of stator tooth, and each stator tooth 2 is inserted into correspondence by through slot 211
Interconnecting piece 11 on.Since the depth of through slot can be preset, the depth being inserted into when through slot being inserted on interconnecting piece again in this way is held
It is easy to control, and then it is easy to control the height of stator tooth during installation.
In the present embodiment, 12 stator tooths are shared, each stator tooth is equipped with a through slot, and corresponding stator yoke is equipped with
12 interconnecting pieces, the corresponding interconnecting piece of a through slot.
In the present embodiment, multiple stator tooths are divided into multiple stator tooths pair, and each stator tooth is formed to by two stator tooths, often
Two stator tooths of two stator tooth radial symmetrics of a stator tooth centering, each stator tooth centering draw close setting.
As shown in Figure 4 and Figure 5, through slot 211 extends along axial direction to the end face of one end of each stator tooth 2, and the two of through slot 211
Side is protrusion 212, and protrusion 212 axially extends, and such through slot 211 and the protrusion 212 of 211 two sides of through slot form " recessed " word knot
Structure.The two sides of interconnecting piece 22 are open slot 12, and protrusion 212 is inserted into open slot 12, the open slot 12 of the side of interconnecting piece 11
Radially extend to the lateral surface of stator yoke 1, the open slot 12 of the other side of interconnecting piece 11 is radially to the medial surface of stator yoke 1
Extend, such interconnecting piece 11 and the open slot 12 of 11 two sides of interconnecting piece form " work " word structure.In the present embodiment, interconnecting piece 11 is
Square block, interconnecting piece 11 are concordant along two axial end faces with stator yoke 1 along two axial end faces." recessed " word structure and " work "
Stator yoke is connect by word structure with stator tooth, realizes the communicated magnetic circuit of stator yoke and stator tooth.
As shown in Figures 2 to 4, each stator tooth 2 include the teeth portion 21 that axially extends and set on teeth portion 21 along axial
The tooth boot portion 22 of one end, tooth boot portion 22 extend along perpendicular to axially direction, and teeth portion 21 is extended at the both ends of tooth boot portion 22,
Through slot 211 is set to teeth portion 21 along the axial other end.Tooth boot portion 22 is plane along axial end face, and the both sides of tooth boot portion 22 are circle
Angle transition.
The teeth portion of two stator tooths of each stator tooth centering is parallel, tooth boot portion is parallel, and two of each stator tooth centering
Spacing between stator tooth is identical.
As shown in fig. 6, each stator tooth is A, two neighboring stator to the minimum spacing between two stator tooths 2 in 5
Tooth is B to the minimum spacing between 5, and A≤B, can reduce motor cogging torque, reduce leakage field between cog and tooth pair, be promoted
Motor performance.It is preferred that A=B, effect is best.
Each stator tooth is to corresponding circular arc angle β=360 °/stator tooth logarithm.
Stator yoke 1 in regular polygon (number of edges=stator tooth pair number of regular polygon, the number of edges of regular polygon be 2 it is whole
Several times), one stator tooth of setting is to 5 on each side of stator yoke 1, and the inscribed circle radius of stator yoke 1 is H, and each stator tooth
Pair the width of tooth boot portion be L, L meets following formula:
。
It is generally preferable that A=B, L value are optimal between 0.5-1mm.
As depicted in figs. 1 and 2, rotor 4 is set to stator tooth 2 along the side of Zhou Xiang close tooth boot portion 22, and rotor 4 includes leading
Disk 41 and permanent magnet 42, permanent magnet 42 are magnet ring or magnetic shoe, and permanent magnet 42 is between tooth boot portion 22 and disk 41.
As shown in fig. 7,42 face tooth boot portion 22 of permanent magnet, and permanent magnet 42 is parallel with the face that tooth boot portion 22 is opposite to each other
Plane, i.e. permanent magnet 42 and tooth boot portion 22 is contour air gap delta in the axial direction, and contour air gap can guarantee that motor tooth socket turns
Square and torque pulsation are smaller, while can guarantee that motor performance is higher, primarily to while guaranteeing motor performance, moreover it is possible to
Promote the stability and reliability of motor operation.
Permanent magnet 42 magnetizes along axial sine and is α per extremely fan-shaped, fan-shaped angle, and α=360 °/2P(2P is motor
Number of poles), two adjacent fan-shaped polarity are 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.
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 being sequentially loaded into corresponding stator yoke, fix；Using the techniques curing molding such as injection molding, encapsulating, shape
At stator；Magnet ring or sector magnet Valley are fastened with glue onto disk, or using the plastics such as nylon by magnet ring or magnet steel with lead
Disk injection molding is formed as one rotor；By rotor assembly on stator corresponding position, motor is formed.
Above specific embodiment is only to the design illustrated the present invention, and those skilled in the art are in this hair
Various deformation and variation can be made under bright design, these deformations and variation are included within protection scope of the present invention.
Claims (10)
1. a kind of stator core, including stator yoke (1) and multiple stator tooths (2), week of multiple stator tooths (2) along stator yoke (1)
It is arranged to interval, and multiple stator tooths (2) are located at the stator yoke (1) along axial side, the multiple stator tooth (2) is divided into
Multiple stator tooths pair, which is characterized in that minimum spacing between two stator tooths (2) of each stator tooth centering is A, adjacent two
Minimum spacing between a stator tooth pair is B, and A≤B.
2. stator core according to claim 1, 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 (2) quantity, and each stator tooth (2) is logical
The through slot (211) is crossed to be inserted on corresponding interconnecting piece (11).
3. stator core according to claim 2, which is characterized in that the through slot (211) is each determined along axial direction to described
The end face of described one end of sub- tooth (2) extends.
4. stator core according to claim 3, which is characterized in that the two sides of the through slot (211) are raised (212),
The two sides of the interconnecting piece (11) are open slot (12), and the protrusion (212) is inserted into the open slot (12).
5. stator core according to claim 4, which is characterized in that the protrusion (212) axially extends, the connection
The open slot (12) of the side in portion (11) radially to the lateral surface of the stator yoke (1) extend, the interconnecting piece (11) it is another
The open slot (12) of side radially extends to the medial surface of the stator yoke (1).
6. stator core according to claim 1, which is characterized in that each stator tooth (2) includes the tooth axially extended
Portion (21) and it is set to the teeth portion (21) along the tooth boot portion (22) of axial one end, the tooth boot portion (22) is along perpendicular to axial
Direction extends, and the both ends of the tooth boot portion (22) are extended the teeth portion (21), and the through slot (211) is set to the teeth portion
(21) along the axial other end.
7. a kind of motor, which is characterized in that including stator core as claimed in claim 6.
8. motor according to claim 7, which is characterized in that the motor further includes rotor (4), and the rotor (4) sets
In stator tooth (2) along the side of axial close tooth boot portion (22).
9. motor according to claim 8, which is characterized in that the rotor (4) includes magnetic conductive disk (41) and permanent magnet
(42), the permanent magnet (42) is between the tooth boot portion (22) and the magnetic conductive disk (41).
10. motor according to claim 9, which is characterized in that the permanent magnet (42) is magnet ring or magnetic shoe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910568777.0A CN110266124B (en) | 2019-06-27 | 2019-06-27 | Stator core and motor |
| PCT/CN2019/125363 WO2020258758A1 (en) | 2019-06-27 | 2019-12-13 | Stator core and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910568777.0A CN110266124B (en) | 2019-06-27 | 2019-06-27 | Stator core and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110266124A true CN110266124A (en) | 2019-09-20 |
| CN110266124B CN110266124B (en) | 2021-06-25 |
Family
ID=67922491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910568777.0A Active CN110266124B (en) | 2019-06-27 | 2019-06-27 | Stator core and motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110266124B (en) |
| WO (1) | WO2020258758A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020258758A1 (en) * | 2019-06-27 | 2020-12-30 | 珠海凯邦电机制造有限公司 | Stator core and motor |
| CN112850372A (en) * | 2021-01-05 | 2021-05-28 | 顾珍莹 | Prevent broken line type self-interacting weaving yarn section of thick bamboo |
| CN118282079A (en) * | 2024-06-03 | 2024-07-02 | 苏州英磁新能源科技有限公司 | Stator core block structure of disc type motor |
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|---|---|---|---|---|
| JP2009095088A (en) * | 2007-10-04 | 2009-04-30 | Honda Motor Co Ltd | Axial gap motor |
| 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 |
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| WO2017081481A1 (en) * | 2015-11-11 | 2017-05-18 | Gordon Ritchie | Axial flux electric machine |
| CN208674969U (en) * | 2018-08-10 | 2019-03-29 | 广东威灵电机制造有限公司 | Motor stator and motor |
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| CN110266124B (en) * | 2019-06-27 | 2021-06-25 | 珠海凯邦电机制造有限公司 | Stator core and motor |
| CN110138112A (en) * | 2019-06-27 | 2019-08-16 | 珠海凯邦电机制造有限公司 | motor for improving stability of cogging torque |
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2019
- 2019-06-27 CN CN201910568777.0A patent/CN110266124B/en active Active
- 2019-12-13 WO PCT/CN2019/125363 patent/WO2020258758A1/en active Application Filing
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| JP2009095088A (en) * | 2007-10-04 | 2009-04-30 | Honda Motor Co Ltd | Axial gap motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020258758A1 (en) * | 2019-06-27 | 2020-12-30 | 珠海凯邦电机制造有限公司 | Stator core and motor |
| CN112850372A (en) * | 2021-01-05 | 2021-05-28 | 顾珍莹 | Prevent broken line type self-interacting weaving yarn section of thick bamboo |
| CN118282079A (en) * | 2024-06-03 | 2024-07-02 | 苏州英磁新能源科技有限公司 | Stator core block structure of disc type motor |
| CN118282079B (en) * | 2024-06-03 | 2024-09-17 | 苏州英磁新能源科技有限公司 | Stator core block structure of disc type motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020258758A1 (en) | 2020-12-30 |
| CN110266124B (en) | 2021-06-25 |
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