CN206517174U - Stator core, stator and motor - Google Patents
Stator core, stator and motor Download PDFInfo
- Publication number
- CN206517174U CN206517174U CN201621109033.0U CN201621109033U CN206517174U CN 206517174 U CN206517174 U CN 206517174U CN 201621109033 U CN201621109033 U CN 201621109033U CN 206517174 U CN206517174 U CN 206517174U
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- stator
- core
- magnetic
- tooth
- slot
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Abstract
The utility model provides a kind of stator core, stator and motor, wherein, stator core, including：Body；Multiple stator slots, multiple stator slots are set on the body, and multiple stator slots are circumferentially arranged, and the stator slot has notch；Magnetic-conductance portion is provided with the notch of the stator slot of at least one.According to the preparation method of stator core of the present utility model, stator, motor and stator core, with advantages below：Including having relatively low cogging torque according to the motor of stator core of the present utility model；High-precision positioning can be realized in favor of motor, motor can also be beneficial in the low-speed performance of speed control system, motor even running can also be made.
Description
Technical field
The utility model is related to technical field of motors, in particular to a kind of stator core, stator, motor.
Background technology
For servomotor, cogging torque is to influence an important parameter of positioning precision.Cogging torque is forever
The torque that the interphase interaction of permanent magnet and stator core is produced during magneto winding no power, be by permanent magnet and armature tooth it
Caused by the tangential component of Interaction Force.Cogging torque is many for the influence of motor.For example, cogging torque can
High accuracy positioning of the motor in position control system can be have impact on, it is also possible to have impact on motor low in speed control system
Fast performance.In another example, cogging torque is also possible to fluctuate motor torque, prevents motor from even running.
Utility model content
Shown referring to Figures 1 and 2, at present, the overwhelming majority of stator core 10 of servomotor is by some pieces of iron core units
Circumferentially it is spliced.During splicing, in order to ensure the circularity of splicing, the structure of the opening of stator slot 2 generally is.Through
The research repeatedly and experiment for crossing utility model people show that the reason for cogging torque is larger is because stator core 10 is led after grooving
Cause magnetic field to occur in that magnetic conductivity is uneven at the notch 21 of stator slot 2, and then occur in that the difference of diverse location cogging torque.
This, which is resulted in, to make cogging torque larger.
The utility model aims to provide a kind of stator core, stator, motor, and it can solve the problem that servo electricity of the prior art
The problem of cogging torque of machine is higher.
The utility model provides a kind of stator core, including：
Body；
Multiple stator slots, multiple stator slots are set on the body, and multiple stator slots are circumferentially arranged, institute
Stating stator slot has notch；
Magnetic-conductance portion is provided with the notch of the stator slot of at least one.
Further, stator core according to claim 1, it is characterised in that the body is by least two iron
Core unit is circumferentially spliced, and the iron core unit includes yoke portion and from the yoke portion to the center position of the body
The stator tooth of extension, the stator slot is formed between any two adjacent described stator tooths.
Further, the stator tooth has the first end and the dorsad body central towards the center of the body
Second end, the second end of the stator tooth is connected with the yoke portion, and the notch of the stator slot is formed at any two adjacent institutes
Between the first end for stating stator tooth.
Further, the both sides at the second end of the stator tooth include the first crown and the second crown, the stator slot
Notch be formed at the first crown of one of them stator tooth in two adjacent stator tooths with it is fixed another described
Between second crown of sub- tooth.
Further, the magnetic-conductance portion closes the notch of the stator slot.
Further, the magnetic-conductance portion includes the magnetic clay sticked on the stator tooth.
Further, the magnetic clay is sticked between two adjacent stator tooths.
Further, the magnetic-conductance portion includes the slot wedge that is adapted with the notch, the both sides of the slot wedge with it is adjacent
Two stator tooth connections.
Further, the slot wedge is connected by glue with the stator tooth.
Further, the magnetic-conductance portion is consistent with the material property of the stator tooth.
Further, the magnetic-conductance portion is consistent with the magnetic conductivity of the stator tooth.
The utility model provides a kind of stator, including stator core described above and the stator being wound on the stator core
Winding.
The utility model provides a kind of motor, including stator and rotor, and the stator includes stator core described above
With the stator winding being wound on the stator core.
According to stator core of the present utility model, stator, motor, with advantages below：
1st, including according to the motor of stator core of the present utility model there is relatively low cogging torque；
2nd, high-precision positioning can be realized in favor of motor, low speed of the motor in speed control system can also be beneficial to
Can, motor even running can also be made.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is the structural representation of stator core of the prior art；
Fig. 2 is the close-up schematic view of Fig. 1 part A；
Fig. 3 is the structural representation of the stator core according to one embodiment of the present utility model；
Fig. 4 is the close-up schematic view of Fig. 3 part B；
Fig. 5 is the structural representation of the stator core according to another embodiment of the present utility model；
Fig. 6 is the structural representation of the slot wedge in Fig. 5；
Fig. 7 shows the cogging torque of the motor of the prior art gone out by simulation calculation；
Fig. 8 shows the cogging torque according to motor of the present utility model；
Description of reference numerals：1st, body；2nd, stator slot；21st, notch；3rd, stator tooth；31st, first end；32nd, the second end；4、
First crown；5th, the second crown；6th, yoke portion；7th, magnetic clay；8th, slot wedge；9th, centre bore；10th, stator core.
Embodiment
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Reference picture 3 to shown in Fig. 6, according to stator core 10 of the present utility model include body 1 and it is multiple be arranged on described in
Stator slot 2 on body 1.Multiple stator slots 2 are circumferentially arranged.Each stator slot 2 has notch 21.Described fixed
Magnetic-conductance portion is provided with the notch 21 of pilot trench 2.
The notch 21 of the stator slot 2 can be diminished or even closed by magnetic-conductance portion, so that magnetic field is at notch 21
Magnetic conductivity also can remain consistent with the part of stator tooth 3, so as to reduce cogging torque.For example, passing through simulation calculation, reference
Shown in Fig. 7 and Fig. 8, under the same test conditions, the cogging torque value of servomotor of the prior art is 139.64mN.m
(milli ox rice), and be according to the cogging torque value of servomotor of the present utility model (being provided with magnetic-conductance portion at notch 21)
(121.22mN.m milli ox rice).As can be seen here, reached according to the cogging torque fall of servomotor of the present utility model
13.19%.Cogging torque is thus greatly reduced based on servomotor of the present utility model.Wherein, in figures 7 and 8, it is horizontal
Axle represents the time (Times), the longitudinal axis represents moment of torsion (torque), takes the difference in torque of crest (m1) and trough (m2) to thoroughly deserve
To cogging torque.
The relatively low cogging torque due to possessing, therefore, it is possible to realize high-precision positioning beneficial to motor, can also be beneficial to electricity
Machine can also make motor even running in the low-speed performance of speed control system.
Specifically, the body 1 can be circumferentially spliced by multiple iron core units.Each iron core unit includes yoke portion
6 and to the body 1 center position extend stator tooth 3.Two adjacent iron core units can pass through the mutual of yoke portion 6
Tongue-and-groove or the other modes connection of adaptation.Shown in reference picture 3, after the completion of each described iron core unit splicing, each described iron
The yoke portion 6 of core unit is in annular.The radially extending along the annular of stator tooth 3 of each iron core unit.The stator
Tooth 3 has the diametrically opposite end 32 of first end 31 and second.Circle of the first end 31 of the stator tooth 3 towards the annular
The heart.One centre bore 9 encloses structure by the first end 31 of stator tooth each described 3 and formed.Second end 32 of the stator tooth 3 is towards its yoke
Portion 6, and be connected with the yoke portion 6.Stator slot 2 is formed between the stator tooth 3 of two adjacent iron core units.Two adjacent
The iron core unit stator tooth 3 first end 31 between be formed with the notch 21 of the stator slot 2.
In one preferred embodiment, the both sides of the first end 31 of the stator tooth 3 include the first crown 4 and second
Crown 5, to reduce the size of notch 21.The notch 21 of the stator slot 2 can be formed in two adjacent stator tooths 3
The first crown 4 of one of them stator tooth 3 and second crown 5 of another stator tooth 3 between.
In the present embodiment, in order to obtain magnetic conductivity evenly, the magnetic-conductance portion can be by the groove of the stator slot 2
Mouth 21 is closed, i.e. isolated the stator slot 2 with the centre bore 9, so as to further reduce magnetic conductivity.
In the present embodiment, shown in reference picture 3 and Fig. 4, the magnetic-conductance portion is included with viscosity and magnetic conduction property
Magnetic clay 7.Magnetic clay 7 can by its own sticky adhesive two adjacent stator tooths 3 relative side wall
On.In the present embodiment, after any two described iron core unit splicings, described in being formed as two iron core units
Magnetic clay 7 is filled at the notch 21 of stator slot 2.
In another embodiment, shown in reference picture 5 and Fig. 6, the magnetic-conductance portion includes prolonging along the axial direction of the body 1
The slot wedge 8 stretched.Slot wedge 8 can be made up of the material with magnetic conduction property.Preferably, the material spy that slot wedge 8 can be with stator tooth 3
Property be consistent so that servomotor obtains uniform magnetic conductivity.In the present embodiment, spelled in any two described iron core units
, can be fixed by slot wedge 8 by glue in the notch 21 of the stator slot 2 formed by two iron core units after connecing
On stator tooth 3.
The invention also discloses a kind of stator, the stator includes stator core 10 described above and is wound on the stator iron
Stator winding on core 10.
The invention also discloses a kind of motor, including stator and rotor, the stator includes stator iron described above
Core 10 and the stator winding being wound on the stator core 10.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (13)
1. a kind of stator core (10), it is characterised in that including：
Body (1)；
Multiple stator slots (2), multiple stator slots (2) are arranged on the body (1), and multiple stator slots (2) are along week
To arrangement, the stator slot (2) has notch (21)；
Notch (21) place of the stator slot (2) of at least one is provided with magnetic-conductance portion.
2. stator core (10) according to claim 1, it is characterised in that the body (1) is by least two iron core lists
Member is circumferentially spliced, and the iron core unit includes yoke portion (6) and from the yoke portion (6) to the center of the body (1)
The stator tooth (3) of direction extension, the stator slot (2) is formed between any two adjacent described stator tooths (3).
3. stator core (10) according to claim 2, it is characterised in that the stator tooth (3) has towards described
The first end (31) at the center of body (1) and dorsad second end (32) at body (1) center, the second of the stator tooth (3)
End (32) is connected with the yoke portion (6), and the notch (21) of the stator slot (2) is formed at any two adjacent stator tooths
(3) between first end (31).
4. stator core (10) according to claim 3, it is characterised in that the first end (31) of the stator tooth (3)
Both sides include the first crown (4) and the second crown (5), the notch (21) of the stator slot (2) be formed at two it is adjacent described
Described the of the first crown (4) of one of them stator tooth (3) in stator tooth (3) and another stator tooth (3)
Between two crowns (5).
5. stator core (10) according to claim 1, it is characterised in that the magnetic-conductance portion is by the stator slot (2)
Notch (21) is closed.
6. stator core (10) according to claim 1, it is characterised in that the magnetic-conductance portion includes sticking to the stator
Magnetic clay (7) on tooth (3).
7. stator core (10) according to claim 6, it is characterised in that the magnetic clay (7) sticks to adjacent
Between two stator tooths (3).
8. stator core (10) according to claim 1, it is characterised in that the magnetic-conductance portion includes and the notch (21)
The slot wedge (8) being adapted, the both sides of the slot wedge (8) are connected with adjacent two stator tooths (3).
9. stator core (10) according to claim 8, it is characterised in that the slot wedge (8) by glue with it is described fixed
Sub- tooth (3) connection.
10. stator core (10) according to claim 1, the magnetic-conductance portion and the material property one of the stator tooth (3)
Cause.
11. stator core (10) according to claim 1, the magnetic-conductance portion is consistent with the magnetic conductivity of the stator tooth (3).
12. a kind of stator, it is characterised in that stator core (10) including any one of such as claim 1 to 11 and to be wound on this fixed
Stator winding on sub- iron core (10).
13. a kind of motor, including stator and rotor, the stator are included such as the stator core of any one of claim 1 to 11
And the stator winding that is wound on the stator core (10) (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621109033.0U CN206517174U (en) | 2016-10-08 | 2016-10-08 | Stator core, stator and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621109033.0U CN206517174U (en) | 2016-10-08 | 2016-10-08 | Stator core, stator and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206517174U true CN206517174U (en) | 2017-09-22 |
Family
ID=59861097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621109033.0U Active CN206517174U (en) | 2016-10-08 | 2016-10-08 | Stator core, stator and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206517174U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374646A (en) * | 2016-10-08 | 2017-02-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator iron core, stator, motor and preparation method for stator iron core |
| WO2020173389A1 (en) * | 2019-02-26 | 2020-09-03 | 上海磁雷革传动系统有限公司 | Stator core assembly, and motor and vehicle having same |
-
2016
- 2016-10-08 CN CN201621109033.0U patent/CN206517174U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374646A (en) * | 2016-10-08 | 2017-02-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator iron core, stator, motor and preparation method for stator iron core |
| WO2020173389A1 (en) * | 2019-02-26 | 2020-09-03 | 上海磁雷革传动系统有限公司 | Stator core assembly, and motor and vehicle having same |
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| GR01 | Patent grant |