CN108736596A - Stator core and motor - Google Patents
Stator core and motor Download PDFInfo
- Publication number
- CN108736596A CN108736596A CN201810974022.6A CN201810974022A CN108736596A CN 108736596 A CN108736596 A CN 108736596A CN 201810974022 A CN201810974022 A CN 201810974022A CN 108736596 A CN108736596 A CN 108736596A
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- CN
- China
- Prior art keywords
- stator core
- tooth
- assist
- ontology
- assist 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.)
- Withdrawn
Links
- 210000003781 tooth socket Anatomy 0.000 claims abstract description 41
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 239000010949 copper Substances 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 210000000515 tooth Anatomy 0.000 description 63
- 238000000034 method Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000011218 segmentation 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
-
- 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
- H02K1/16—Stator cores with slots for windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- 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)
Abstract
The present invention provides a kind of stator core and motors.Stator core includes ontology and assist tooth, and structure, the loop configuration are circumferentially provided with tooth socket to the ontology in a ring, and the assist tooth is removably mounted in the tooth socket.During actual use, increase dismountable assist tooth at the tooth socket of stator core, the presence of assist tooth increases the notch number of stator core, improve the greatest common divisor of slot number number, fundamental wave cogging torque periodicity increases, so that cogging torque amplitude reduces, when assembling, assist tooth is installed after being embedded winding, and the width of rebate of the tooth socket of stator core can increase, and is conducive to embedding, improve copper factor, simultaneously by the structure of assist tooth, the slot opening after installation can be allow to be designed very little, cogging torque can be further decreased.
Description
Technical field
The present invention relates to technical field of driving, in particular to a kind of stator core and motor.
Background technology
Interact when cogging torque is magneto winding no power between the iron core of permanent magnet the torque of generation, be by
Caused by tangential component of the permanent magnet with the Interaction Force of armature tooth, it is peculiar one of the problem of magneto, is high property
The critical issue that must take into consideration and solve in energy Design of PM Motor and manufacture.
Currently, cogging torque of the various methods for reducing magneto optimizes magnetic pole for example, using fractional-slot winding
Polar arc is wide and slot opening, and not equal air gaps and not equal magnetic sheets thickness, skewed slot and oblique pole, magnetic pole segmentation misplace, and magnetic pole misalignment, crown is opened
Auxiliary tank etc..
Fig. 1 is the typical structure of existing magneto, and the stator core 1 of magneto is completely circular structure, using fractional-slot
Winding 2 simultaneously optimizes width of rebate, can reduce cogging torque, but there is a problem of embedding difficulty, while cogging torque has into one
Walk the possibility reduced.
Invention content
The main purpose of the present invention is to provide a kind of stator core and motors, are turned with solving existing magneto tooth socket
The big problem of square.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of stator core, including ontology and auxiliary
Tooth is helped, structure, the loop configuration are circumferentially provided with tooth socket to the ontology in a ring, and the assist tooth is removably mounted on
In the tooth socket.
Further, the cross section of the assist tooth is T-shaped.
Further, the assist tooth is arranged in the center of the tooth socket.
Further, the end set of the assist tooth has auxiliary teeth portion, the auxiliary teeth portion and the formation tooth socket
Teeth portion forms notch.
Further, the assist tooth is installed on the body by positioning region.
Further, the positioning region is the insertion end being embedded on the body.
Further, locating slot or location hole are provided on the positioning region, the positioning region is mounted on the locating slot
Or in the location hole, and fixed by locating piece.
Further, the locating piece is positioning pin or pin.
Further, the tooth socket is multiple, the multiple tooth socket being arranged circumferentially along the ontology, the auxiliary
Tooth is multiple, and multiple assist tooths are arranged correspondingly with multiple tooth sockets.
According to another aspect of the present invention, a kind of motor, including stator core are provided, the stator core is above-mentioned
Stator core.
It applies the technical scheme of the present invention, during actual use, increases at the tooth socket of stator core detachable
Assist tooth, the presence of assist tooth increases the notch number of stator core, improves the greatest common divisor of slot number number, and fundamental wave tooth socket turns
Square periodicity increases, so that cogging torque amplitude reduces, when assembling, assist tooth is installed after being embedded winding, fixed
The width of rebate of the tooth socket of sub- iron core can increase, and be conducive to embedding, improve copper factor, while by the structure of assist tooth, can be with
Allow the slot opening after installation to be designed very little, cogging torque can be further decreased.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 diagrammatically illustrates the typical structure of existing magneto；
Fig. 2 diagrammatically illustrates the front view of the stator core of the present invention；
Fig. 3 diagrammatically illustrates the stereogram of the ontology of the stator core of the present invention；
Fig. 4 diagrammatically illustrates the stereogram of the assist tooth of the stator core of the present invention；
Fig. 5 diagrammatically illustrates the front view of the motor of the present invention.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, ontology；11, tooth socket；12, location hole；13, teeth portion；20, assist tooth；21, teeth portion is assisted；22, positioning region；30,
Locating piece；40, magnetic shoe；50, winding；60, rotor core.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment not
Those of be necessarily limited to clearly to list step or unit, but may include not listing clearly or for these processes, side
The intrinsic other steps of method, product or equipment or unit.
For ease of description, herein can with use space relative terms, as " ... on ", " in ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (be rotated by 90 ° or be in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Shown in Fig. 2 to Fig. 5, according to an embodiment of the invention, a kind of motor is provided, the motor in the present embodiment is outstanding
It refers to magneto.Motor in the present embodiment includes stator core, rotor core 60, magnetic shoe 40 and winding 50.
Wherein, stator core is set in the periphery of rotor core 60, and magnetic shoe 40 is arranged in stator core and rotor core 60
Between, winding 50 is around being located on stator core.
However, the cogging torque of the magneto in order to reduce the present invention, to the stator core of magneto in this implementation
Structure is improved.
Specifically, the stator core in the present embodiment includes ontology 10 and assist tooth 20, the structure in a ring of ontology 10, ring
Shape structure is circumferentially provided with tooth socket 11, and assist tooth 20 is removably mounted in tooth socket 11.Preferably, the ontology in this implementation
10 arrange in circular ring shape, and tooth socket 11 is arranged in the inside of cirque structure.
During actual use, increase dismountable assist tooth 20, assist tooth 20 at the tooth socket 11 of stator core
Presence increase the notch number of stator core, improve the greatest common divisor of slot number number, fundamental wave cogging torque periodicity increases, from
And cogging torque amplitude is reduced, when assembling, assist tooth 20 is installed after being embedded winding 50, the tooth socket of stator core
11 width of rebate can increase, and be conducive to embedding, improve copper factor, while by the structure of assist tooth 20, can to install
Slot opening later can be designed very little, can further decrease cogging torque.
Shown in Figure 4, the cross section of the assist tooth 20 in the present embodiment is T-shaped, and the cross section in the present embodiment refers to
Along the face of the width direction longitudinally cutting of assist tooth 20, shown in the appearance seen such as Fig. 2.The end of the assist tooth 20 of T shapes can
Relatively narrow notch is formed with the teeth portion 13 on the ontology 10 of formation tooth socket 11, and then reaches the purpose for reducing cogging torque.
The end set of assist tooth 20 in the present embodiment has auxiliary teeth portion 21, auxiliary teeth portion 21 here that can be formed in
The end of the notch of the close tooth socket 11 of the assist tooth 20 of T shapes, auxiliary teeth portion 21 form notch with the teeth portion 13 for forming tooth socket 11,
It can be set as it can be seen that the present invention by optimizing the structure of assist tooth 20, enables to install the slot opening after auxiliary teeth portion 21
Very little is counted to obtain, cogging torque can be further decreased, it is simple in structure, it is easy to implement.
Preferably, tooth socket 11 be it is multiple, multiple tooth sockets 11 are arranged circumferentially along ontology 10, assist tooth 20 be it is multiple,
Multiple assist tooths 20 are arranged correspondingly with multiple tooth sockets 11.Assist tooth 20 is arranged in the center of tooth socket 11, be convenient for around
The installation of group 50 increases copper factor.
For the ease of installation, the assist tooth 20 in the present embodiment is fixedly mounted on by positioning region 22 on ontology 10.
Positioning region 22 in the present embodiment is the insertion end being embedded on ontology 10, simple in structure, realization easy to process.This
Locating slot or location hole 12 are provided on positioning region 22 in embodiment, positioning region 22 is mounted in locating slot or location hole 12,
And fixed by locating piece 30, structure adds list, is easily installed.
Can be positioning pin by locating piece 30 in a kind of preferred embodiment of the present invention, it is simple in structure, convenient for tearing open
Dress.Certainly, in other embodiments of the invention, locating piece 30 can also be set to the structures such as bolt or buckle, as long as
It is other modes of texturing under the design of the present invention, within protection scope of the present invention.
According to the above embodiments it is known that：
The ontology 10 and assist tooth 20 of the big notch of stator core of the present invention are constituted, and ontology 10 and assist tooth 20 pass through positioning
Portion 22 and location hole 12 coordinate, using screw or pin connection.Assist tooth 20 is installed on the notch of the tooth socket 11 on ontology 10, with
The teeth portion 13 of both sides coordinates so that the notch number of stator core is double.Such as according to the derivation of the cogging torque of magneto
Under：
1, magnetic field energy W when cogging torque is defined as motor no power is to the negative derivative of rotor relative position angle α, i.e.,
2, the magnetic field energy stored in motor is approximately the sum of the magnetic field energy stored in motor gas-gap and permanent magnet, i.e.,
Wherein μ0For magnetic conductivity, B is air gap flux density.
3, air gap flux density along armature surface distribution can approximate representation be
Wherein, Br(θ) is permanent magnet residual magnetism, and δ (θ, α) is effective air gap length, hm(θ) is permanent magnet magnetizing direction length
It is distributed in the circumferential direction.
4, by (2) (3) it is found that
5, willWithFourier expansion respectively is as follows：
1)Fourier expansion on section [- pi/2 p, pi/2 p]
In formula,
Wherein p is number of pole-pairs, BrFor permanent magnet residual magnetism, αpFor the pole embrace of permanent magnetism magnetic pole.
2)Fourier expansion on section [- π/z, π/z] is
Wherein, z is slot number.
6, as m ≠ n, integral of the trigonometric function in [0,2 π] meets
7, it brings formula (4), (5) and (6) into formula (1), and using formula (7), obtains the expression formula of cogging torque
Wherein, z is slot number, and 2p is number of poles, LaFor stator core length, R1 and R2 are respectively 60 yoke outer radius of rotor core
With stator core inside radius, n is that nz/2p is made to be the integer of integer, and Gn is long with effective air gap length and permanent magnet magnetizing direction
Related multinomial is spent, Br is permanent magnet residual magnetism.In the range of rotor relative position changes a tooth pitch, cogging torque is
It is periodically variable, the periodicity of variation be number of poles, slot number and number of poles greatest common divisor ratio, i.e.,
Wherein, NpFor cogging torque periodicity, GCD (z, 2p) indicates the greatest common divisor of slot number z and number of poles 2p.Tooth socket turns
Square amplitude depends primarily onWherein n1Equal to periodicity NP, periodicity is more, n1It is bigger, it is correspondingIt is smaller, thus
Cogging torque amplitude is smaller.When one timing of motor pole number, increases motor slot number, be equivalent to and increase cogging torque periodicity, from
And reduce cogging torque.
It when actual design, can be required according to motor size, design the size of ontology 10 and assist tooth 20, sheet of the invention
The tooth socket 11 of body 10 uses big notch arrangement, is needed to design width of rebate according to embedding, is convenient for embedding, can increase stator core
Copper factor, the yoke portion of stator core processes fluted or location hole 12, is used for and the installation of the positioning region 22 of assist tooth 20 coordinates.
The assist tooth 20 of the present invention uses T-shaped structure, lower part to be machined with auxiliary teeth portion 21, match with the teeth portion 13 of stator core
Conjunction forms notch, since assist tooth 20 is installed after coiling is complete, does not influence the embedding of stator, can optimize teeth portion structure, subtract
Piece stator core slot opening degree after small assembly.Because cogging torque is caused by armature is slotted, notch is bigger, tooth socket
Torque is bigger, and the reduction of width of rebate is conducive to further decrease cogging torque.The top of assist tooth 20 is machined with positioning region, right
Should on stator core groove or location hole 12 coordinate.
According to another aspect of the present invention, a kind of motor, including stator core are provided, stator core is above-described embodiment
In stator core.
When actual design motor, the design procedure of motor of the invention is as follows：
1, it is required according to motor size, designs the size of ontology and assist tooth；
2, according to embedding needs, stator core slot opening degree is designed；
3, according to the requirement of motor cogging torque, the cooperation of motor slot number of poles is selected, piece stator core after design assembly
Tooth socket width of rebate；
4, coordinated according to motor slot number of poles, design the teeth portion size of ontology and assist tooth, select the number of assist tooth；
5, according to cooperation intensity requirement, the fit system of stator core and assist tooth is selected.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Present invention reduces motor cogging torques, solve the problems, such as embedding difficulty, increase at the tooth socket notch of stator core
Add dismountable assist tooth, increase the notch number of iron core, improves the greatest common divisor of slot number number, fundamental wave cogging torque periodicity
Increase, cogging torque amplitude reduces, and the width of rebate of stator core increases, and is conducive to embedding, copper factor is improved, since assist tooth is
It is installed after embedding, by the structure for optimizing assist tooth so that the slot opening after installing can be designed very little, Ke Yijin
One step reduces cogging torque.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of stator core, which is characterized in that including ontology (10) and assist tooth (20), the ontology (10) is tied in a ring
Structure, the loop configuration are circumferentially provided with tooth socket (11), and the assist tooth (20) is removably mounted on the tooth socket (11)
It is interior.
2. stator core according to claim 1, which is characterized in that the cross section of the assist tooth (20) is T-shaped.
3. stator core according to claim 1, which is characterized in that the assist tooth (20) is arranged in the tooth socket (11)
Center.
4. stator core according to claim 1, which is characterized in that the end set of the assist tooth (20) has assist tooth
Portion (21), the auxiliary teeth portion (21) form notch with the teeth portion (13) for forming the tooth socket (11).
5. stator core according to claim 1, which is characterized in that the assist tooth (20) is installed by positioning region (22)
On the ontology (10).
6. stator core according to claim 5, which is characterized in that the positioning region (22) is to be embedded in the ontology
(10) insertion end on.
7. stator core according to claim 6, which is characterized in that be provided with locating slot or fixed on the positioning region (22)
Position hole (12), the positioning region (22) are mounted in the locating slot or the location hole (12), and solid by locating piece (30)
It is fixed.
8. stator core according to claim 7, which is characterized in that the locating piece (30) is positioning pin or pin.
9. stator core according to any one of claim 1 to 8, which is characterized in that the tooth socket (11) be it is multiple, it is more
A tooth socket (11) being arranged circumferentially along the ontology (10), the assist tooth (20) are multiple, multiple auxiliary
Tooth (20) is arranged correspondingly with multiple tooth sockets (11).
10. a kind of motor, including stator core, which is characterized in that the stator core is any one of claim 1 to 9 institute
The stator core stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974022.6A CN108736596A (en) | 2018-08-24 | 2018-08-24 | Stator core and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974022.6A CN108736596A (en) | 2018-08-24 | 2018-08-24 | Stator core and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108736596A true CN108736596A (en) | 2018-11-02 |
Family
ID=63941663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810974022.6A Withdrawn CN108736596A (en) | 2018-08-24 | 2018-08-24 | Stator core and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108736596A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3793071A1 (en) * | 2019-09-11 | 2021-03-17 | Rolls-Royce plc | Electric machines |
| CN112671123A (en) * | 2021-01-22 | 2021-04-16 | 珠海格力电器股份有限公司 | Stator core, stator and motor |
| CN113629957A (en) * | 2021-08-04 | 2021-11-09 | 蔚然（南京）动力科技有限公司 | Method for forming semi-closed slot type stator punching sheet of W-Pin winding motor |
| CN114123559A (en) * | 2021-11-11 | 2022-03-01 | 珠海格力电器股份有限公司 | Stator assembly and motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201985631U (en) * | 2011-03-27 | 2011-09-21 | 配天(安徽)电子技术有限公司 | Stator core and permanent magnet motor |
| CN103222165A (en) * | 2011-03-07 | 2013-07-24 | 浙江博望科技发展有限公司 | Three phase permanent magnet servomotor |
| CN208623400U (en) * | 2018-08-24 | 2019-03-19 | 珠海格力电器股份有限公司 | Stator core and motor |
-
2018
- 2018-08-24 CN CN201810974022.6A patent/CN108736596A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103222165A (en) * | 2011-03-07 | 2013-07-24 | 浙江博望科技发展有限公司 | Three phase permanent magnet servomotor |
| CN201985631U (en) * | 2011-03-27 | 2011-09-21 | 配天(安徽)电子技术有限公司 | Stator core and permanent magnet motor |
| CN208623400U (en) * | 2018-08-24 | 2019-03-19 | 珠海格力电器股份有限公司 | Stator core and motor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3793071A1 (en) * | 2019-09-11 | 2021-03-17 | Rolls-Royce plc | Electric machines |
| US11594938B2 (en) | 2019-09-11 | 2023-02-28 | Rolls-Royce Plc | Electric machine with helical rotor conduit and axial fluid channel in stator slots |
| CN112671123A (en) * | 2021-01-22 | 2021-04-16 | 珠海格力电器股份有限公司 | Stator core, stator and motor |
| CN112671123B (en) * | 2021-01-22 | 2023-01-24 | 珠海格力电器股份有限公司 | Stator core, stator and motor |
| CN113629957A (en) * | 2021-08-04 | 2021-11-09 | 蔚然（南京）动力科技有限公司 | Method for forming semi-closed slot type stator punching sheet of W-Pin winding motor |
| CN114123559A (en) * | 2021-11-11 | 2022-03-01 | 珠海格力电器股份有限公司 | Stator assembly and motor |
| CN114123559B (en) * | 2021-11-11 | 2023-04-07 | 珠海格力电器股份有限公司 | Stator assembly and motor |
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Application publication date: 20181102 |