CN104426253A - High-power-density motor stator iron core structure and motor using motor stator iron core structure - Google Patents
High-power-density motor stator iron core structure and motor using motor stator iron core structure Download PDFInfo
- Publication number
- CN104426253A CN104426253A CN201310411160.0A CN201310411160A CN104426253A CN 104426253 A CN104426253 A CN 104426253A CN 201310411160 A CN201310411160 A CN 201310411160A CN 104426253 A CN104426253 A CN 104426253A
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- China
- Prior art keywords
- stator core
- motor
- iron core
- stator iron
- armature winding
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Classifications
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- 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
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
- H02K21/227—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos having an annular armature coil
-
- 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
Abstract
The invention mainly aims to provide a high-power-density motor stator iron core structure and a motor using the motor stator iron core structure. The motor stator iron core structure comprises a stator iron core body and a stator iron core end, wherein the stator iron core body is of a 2D structure and is made of a soft magnetic material; the stator iron core end is arranged at the end of the stator iron core body; one side matched with the stator iron core body is of a planar structure; a retaining wall protruding out of the plane is arranged at the periphery of the other side of the stator iron core end. By virtue of the high-power-density motor stator iron core structure, the defect of low magnetic saturation point of the soft magnetic composite material (SMC) can be avoided; the SMC is applied to the high-power-density motor; meanwhile, an end iron core made of the soft magnetic composite material (SMC) is in contact with the end of an armature winding at a large round angle; the treatment of an iron core insulation layer is simplified; the reliability of the armature winding is improved; furthermore, the manufactured motor is relatively compact in structure; the power density of the motor is increased.
Description
Technical field
The present invention relates to a kind of motor stator technical field, specifically, be a kind of stator core construction for motor of high power density and apply its motor.
Background technology
Motor refers to a kind of calutron realizing electric energy conversion according to electromagnetic laws.Permagnetic synchronous motor (PMSM) because its power density and electric efficiency higher, thus play an increasingly important role in modern industry and household products.In order to improve the power density of motor, the magnet steel of rotor needs to adopt the high magnetic energy permanent magnetic material as neodymium iron boron to make.The magnetic saturation phenomenon of motor stator core is also just obvious.
The basic structure that one has the permagnetic synchronous motor (PMSM) of external rotor is shown at Fig. 1,2, it comprises stator core 1 ＇, be wrapped in armature winding 2 ＇, rotor 3 ＇ on stator core 1 ＇ and rotor magnetic steel 4 ＇, and the capacity of water realizing energy converting between mechanical due to the size of the acting surface between rotor magnetic steel 4 ＇ and stator core 1 ＇ and motor is closely related.In order to make full use of the magnetic field that magnet steel produces, the length of motor stator core 1 ＇ and the length of rotor magnetic steel 4 ＇ are designed to be basically identical.Upper end 61 ＇ of winding and the end cap portions of rotor are divided close, and the immobilising device of bottom 62 ＇ and stator is close.
The electromagnet portion of motor stator is made up of motor stator core 1 ＇ and armature winding 2 ＇.In order to enough make full use of space, armature winding 2 ＇ on stator adopts the form of concentratred winding, to reduce the space of End winding.
As shown in Fig. 3,4,5, the coil of a concentratred winding, the length of one week is made up of two Lc and two Le.Lc part is positioned at core interior, and Le part is positioned at the end of iron core outside, and as can be seen from Figure 6, usually, the length of length fundamental sum rotor magnetic steel 4 ＇ of stator core 1 ＇ is consistent, and that is, the length of Lc fundamental sum rotor magnetic steel 4 ＇ of winding is consistent;
Even if employing concentratred winding, the motor of the space shared by End winding to high power density still can not be ignored.This is because when use coil winding machine moves into winding in the groove of stator core 1 ＇, the size of End winding is difficult to control very accurate, and therefore the size of the electromagnet portion of motor stator is very accurately restive.Namely, when the copper factor of stator is higher time, the end of winding is easy to loose, even causes coming off of winding.As can be seen from Figure 2, if 61 ＇ of overhang get loose, and it is in the face of the rotor of High Rotation Speed, and motor can be seriously damaged.So in the design of motor, enough spaces are left in the end that motor is necessary for winding so that install winding, and motor run in protective winding.And the result processed like this, cause electric machine structure compact not; These, make the power density of motor be very limited, and be difficult to ensure the production yield of motor product and the reliability of motor.
When use soft-magnetic composite material (soft magnetic composite material, SMC), because its resistivity is higher, three-dimensional stator core construction as shown in Figure 6 can be adopted.But the saturation point of SMC is lower.If directly use soft-magnetic composite material to do stator core, the high-energy magnet steel of motor can not play one's part to the full, and the power density of motor can be caused to decline.
Summary of the invention
Main purpose of the present invention is provide a kind of stator core construction for motor of high power density and apply its motor, and it can overcome above-mentioned defect, can solve the limitation be applied in the impact of motor volume and SMC due to winding overhang on electric machine iron core.
For achieving the above object, the technical solution adopted in the present invention is:
A stator core construction for motor for high power density, it comprises stator core body and stator core end, and described stator core body is 2D structure, is made up of described soft magnetic material; Described stator core end, it is located at the end of described stator core body, and with the side of described this mates of stator core, be planar structure, the opposite side of described stator core end, is circumferentially provided with the gear wall protruding plane.
The opposite side of above-mentioned stator core end, center is provided with protrudes the gear wall of plane, coordinates to be formed cave in its gear wall circumferentially.
Above-mentioned stator core end is made by soft-magnetic composite material.
On above-mentioned stator core end, be wound around the position of armature winding, be provided with chamfering.
Above-mentioned chamfering is circular arc chamfering.
Above-mentioned stator core end is provided with two, is located at the two ends of described stator core body respectively.
A kind of motor, it includes the stator core construction for motor of above-mentioned high power density, armature winding, rotor and rotor magnetic steel, described armature winding is wrapped on described stator core construction, described rotor magnetic steel is located in described rotor inner wall, and described rotor magnetic steel is set in outside described stator core construction.
The end winding of above-mentioned armature winding is arranged in the described depression being arranged on described stator core end completely.
The coil sections end of above-mentioned armature winding is positioned at the outside of described stator core end.
After adopting technique scheme, the present invention has following effect:
1) function of soft-magnetic composite material (SMC) material can be made full use of, realize the iron core of 3D;
2) weakness that the saturation point of soft-magnetic composite material (SMC) is lower can be avoided, SMC is used for high power density motor;
3) utilize the end iron core that soft-magnetic composite material (SMC) is formed, realize contacting with larger fillet to armature end-connections.This simplify the process of core insulating tube, improve the reliability of armature winding;
4) silicon steel sheet has the higher feature of saturation point, but due to 2D structure can only be formed.The performance of the 2D iron core that mixed structure can make silicon steel sheet be formed is fully used, thus makes the structure of motor compacter.This is conducive to the power density increasing motor;
5) when the end of armature winding is located among iron core, the end of armature winding is protected.Winding there will not be the phenomenon getting loose and lead, and thus produce yield and be improved, the reliability of motor is strengthened;
6) due to a part for the end of armature winding, or all, be located among iron core, the conductor length of armature winding is reduced.Thus reduce the resistance of winding, improve the efficiency of motor.
Accompanying drawing explanation
Fig. 1 is the perspective view of existing permagnetic synchronous motor;
Fig. 2 is the combination schematic diagram of existing permagnetic synchronous motor;
Fig. 3 is the circuit diagram one of a concentratred winding of existing permagnetic synchronous motor;
Fig. 4 is the circuit diagram two of a concentratred winding of existing permagnetic synchronous motor;
Fig. 5 is the structural representation of existing permanent-magnetic synchronous motor stator electromagnet portion;
Fig. 6 is the stator core construction schematic diagram of existing permagnetic synchronous motor;
Fig. 7 is perspective exploded view of the present invention;
Fig. 8 is three-dimensional combination figure of the present invention;
Fig. 9 is the structural representation after the present invention is wound with armature winding;
Figure 10 is the electromagnetic structure schematic perspective view of the present invention for motor;
Figure 11 is the partial enlarged drawing of Figure 10;
Figure 12 is the floor map of the present invention for the electromagnetic structure of motor;
Figure 13 is the schematic diagram of the stator core end of the embodiment of the present invention two;
Figure 14 is the schematic diagram of Figure 13 partial cutaway;
Figure 15 is the structural representation one of motor embodiment three of the present invention;
Figure 16 is the structural representation two of motor embodiment three of the present invention;
Figure 17 is the structural representation one of the embodiment four of stator structure of the present invention;
Figure 18 is the structural representation two of the embodiment four of stator structure of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment one:
Shown in figure 7,8, the invention discloses a kind of stator core construction for motor of high power density, it comprises stator core body 1, stator core end 5, wherein:
Stator core body 1, it is 2D structure, is made up of the soft magnetic material with higher saturation point, and in the present embodiment, it forms with silicon steel sheet closed assembly.
Stator core end 5 is all be made up of the soft magnetic material with higher electric resistivity and high permeability, such as soft-magnetic composite material (soft magnetic composite material, SMC); Its side coordinated with stator core body 1, be planar structure, cross section is identical with the cross section of stator core body 1; The center of its opposite side is provided with the gear wall 51 protruding plane, is circumferentially provided with the gear wall 52 protruding plane, coordinates shown in Figure 11, and gear wall 51,52 forms depression 53.
During use, this stator core end 5, can be one, also can be two, and in the present embodiment, it is two, is located at the two ends of stator core body 1 respectively.
Shown in figure 9, the side of the planar structure of stator core end 5, seamless link is realized with stator core body 1, the setting of the gear wall 51,52 of the other end, the end winding of armature winding 5 can be arranged in the depression 53 of iron core completely, like this, the size of the electromagnet portion of whole motor stator just can be controlled obtained very accurate, and electric machine structure can be compacter.
With reference to shown in Figure 10,11,12, the present invention has also separated a kind of motor, and it includes above-mentioned stator core construction, armature winding 2, rotor 3 and rotor magnetic steel 4.
Armature winding 2 is wrapped on described stator core construction, and rotor magnetic steel 4 is located on rotor 3 inwall, and rotor magnetic steel cover 4 is located at outside stator core construction.
In use, because the length of stator core is identical, namely effective electromagnetic action face of motor is identical.But the Lc length of winding can reduce, thus the entire length of the wire of armature winding 2 can reduce (see Fig. 3 and Fig. 4).This causes the resistance of armature winding 2 to reduce.This is highly significant for reducing the loss produced because of the resistance of winding.The efficiency of motor can improve therefrom; In addition, the end of armature winding 2, in the depression 53 of core structure, is thus protected fully.In addition, this structure can avoid the obscission producing armature winding 2 portions end coil, improves the yield of motor production and the reliability of use.
In addition, it can also be seen that from Figure 10, stator core construction of the present invention, when loop length is constant, the length of this stator core, exceedes the length of rotor magnetic steel 4.Like this will to utilize the edge effect in magnetic field, the magnetic flux that the rotor magnetic steel that increase armature winding is coupled further produces; The power of further raising motor.
embodiment two:
With reference to shown in Figure 13,14, it is compared with embodiment one, and difference is:
The stator core end 5 of this embodiment, in the part contacted with armature winding 2,53 places of namely caving in, be provided with chamfering 54, the setting of chamfering 54, make the thickness of insulating layer on surface, stator core end 5 very even, insulating barrier is easy to realize, and even can remove insulating barrier from; In addition, with reference to shown in Figure 14, with the stator core end 5 of fillet, armature winding 2 is avoided and contacts generation wearing and tearing with the acute angle of stator core end 5, improve the reliability of armature winding 2.
embodiment three:
With reference to shown in Figure 15,16, it is the structural representation of the embodiment three of motor of the present invention, and compared with embodiment one, its difference is:
In the present embodiment, stator core end 5 only has one, is provided at the lower end of stator core body 1.The end 61 ＇ (see figure 2) that this structure can make winding correspond to rotor can be adequately protected, and the main part 1(of stator core is shown in Fig. 8) can be lengthened.This can allow the performance of the high permeability of the main part of iron core be not fully exerted, and this is significantly in numerous applications.
embodiment three:
With reference to shown in Figure 17,18, it is the structural representation of the embodiment four of motor of the present invention, and compared with embodiment one, its difference is:
In the present embodiment, the end winding of part armature winding 2 is positioned at the outside of stator core end 5.The result of such process is; the length Lc of armature winding obtains minimizing to a certain extent; and end obtains protection to a certain extent, and this can allow the performance of the high permeability of the main part of iron core be not fully exerted, and this is significant in numerous applications.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (9)
1. a stator core construction for motor for high power density, is characterized in that: it comprises stator core body and stator core end, and described stator core body is 2D structure, is made up of described soft magnetic material; Described stator core end, it is located at the end of described stator core body, and with the side of described this mates of stator core, be planar structure, the opposite side of described stator core end, is circumferentially provided with the gear wall protruding plane.
2. the stator core construction for motor of high power density as claimed in claim 1, is characterized in that: the opposite side of described stator core end, and center is provided with the gear wall protruding plane, coordinates to be formed cave in its gear wall circumferentially.
3. the stator core construction for motor of high power density as claimed in claim 1 or 2, is characterized in that: described stator core end is made by soft-magnetic composite material.
4. the stator core construction for motor of high power density as claimed in claim 1 or 2, is characterized in that: on described stator core end, is wound around the position of armature winding, is provided with chamfering.
5. the stator core construction for motor of high power density as claimed in claim 4, is characterized in that: described chamfering is arc angling.
6. the stator core construction for motor of high power density as claimed in claim 1 or 2, is characterized in that: described stator core end is provided with two, is located at the two ends of described stator core body respectively.
7. a motor, it is characterized in that: it includes the stator core construction for motor of the arbitrary described high power density of claim 1-5, armature winding, rotor and rotor magnetic steel, described armature winding is wrapped on described stator core construction, described rotor magnetic steel is located in described rotor inner wall, and described rotor magnetic steel is set in outside described stator core construction.
8. motor as claimed in claim 7, is characterized in that: the end winding of described armature winding is arranged in the described depression being arranged on described stator core end completely.
9. motor as claimed in claim 7, is characterized in that: the coil sections end of described armature winding is positioned at the outside of described stator core end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310411160.0A CN104426253A (en) | 2013-09-10 | 2013-09-10 | High-power-density motor stator iron core structure and motor using motor stator iron core structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310411160.0A CN104426253A (en) | 2013-09-10 | 2013-09-10 | High-power-density motor stator iron core structure and motor using motor stator iron core structure |
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| Publication Number | Publication Date |
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| CN104426253A true CN104426253A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310411160.0A Pending CN104426253A (en) | 2013-09-10 | 2013-09-10 | High-power-density motor stator iron core structure and motor using motor stator iron core structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356632A (en) * | 2015-10-22 | 2016-02-24 | 珠海格力电器股份有限公司 | Stator core, manufacturing method for stator core, and motor |
| CN114285195A (en) * | 2021-12-08 | 2022-04-05 | 东南大学 | End ring device of motor core yoke part |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006174525A (en) * | 2004-12-13 | 2006-06-29 | Jtekt Corp | Core, armature core and motor |
| CN201708605U (en) * | 2010-05-21 | 2011-01-12 | 中山大洋电机制造有限公司 | Motor stator iron core formed by mould pressing |
| CN203554080U (en) * | 2013-09-10 | 2014-04-16 | 峰岹科技（深圳）有限公司 | Motor stator core structure with high power density and motor utilizing the same |
-
2013
- 2013-09-10 CN CN201310411160.0A patent/CN104426253A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006174525A (en) * | 2004-12-13 | 2006-06-29 | Jtekt Corp | Core, armature core and motor |
| CN201708605U (en) * | 2010-05-21 | 2011-01-12 | 中山大洋电机制造有限公司 | Motor stator iron core formed by mould pressing |
| CN203554080U (en) * | 2013-09-10 | 2014-04-16 | 峰岹科技（深圳）有限公司 | Motor stator core structure with high power density and motor utilizing the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356632A (en) * | 2015-10-22 | 2016-02-24 | 珠海格力电器股份有限公司 | Stator core, manufacturing method for stator core, and motor |
| CN114285195A (en) * | 2021-12-08 | 2022-04-05 | 东南大学 | End ring device of motor core yoke part |
| CN114285195B (en) * | 2021-12-08 | 2022-09-23 | 东南大学 | End ring device of motor core yoke part |
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Application publication date: 20150318 |
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