CN103872803A - Stator assembly of driving motor for vehicle - Google Patents
Stator assembly of driving motor for vehicle Download PDFInfo
- Publication number
- CN103872803A CN103872803A CN201310286017.3A CN201310286017A CN103872803A CN 103872803 A CN103872803 A CN 103872803A CN 201310286017 A CN201310286017 A CN 201310286017A CN 103872803 A CN103872803 A CN 103872803A
- Authority
- CN
- China
- Prior art keywords
- iron core
- stator disc
- vehicle
- frame assembly
- field frame
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/02—Cores, Yokes, or armatures made from sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/08—Cores, Yokes, or armatures made from powder
-
- 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
Abstract
The invention provides a stator assembly of a driving motor for a vehicle, and the stator assembly comprises an iron core (321), stator discs (322) mounted at both sides of the iron core, an insulator inserted into the iron core and the stator discs and a coil wound around the iron core. The stator assembly of the driving motor for the vehicle is characterized in that the iron core (321) is composed of a plurality of laminated electrical steel sheets and the stator discs (322) are made of soft magnetic powder (SMC).
Description
Technical field
The present invention relates to the field frame assembly of vehicle-mounted drive motor, refer specifically to the field frame assembly with the stator disc being formed by soft magnetic powder (SMC).
Background technology
From electromagnetism aspect, the structure of motor belongs to functional parts, as shown in Figure 1, is made up of iron core 110, coil 120 and insulator 130.
In addition, insulator 130, between coil and iron core 110, for electric insulation, is guaranteed only to flow in coil from the electric current of power supply, and iron core or electric motor structure can not leak electricity, thereby improve the performance of motor, the generation of prevention electric shock accidents.
Want the performance that improves motor just need to use high performance material, particularly iron core 110 suggestions are used magnetic resistance, magnetic hysteresis and eddy current loss little, the material that saturation flux density is high.
Square being directly proportional of the size of eddy current and material thickness, is to reduce eddy current loss, should use thin electrical sheet to make high-performance iron core.
In addition, as shown in Figure 2, the gradient of the tangent line of curve described in B-H loop is consistent with magnetic permeability, and for reducing magnetic hysteresis loss, iron core uses the high material of magnetic permeability.
But the iron core 110 of being made by thin electrical sheet during for motor, needs as shown in Figure 1, piles up multilayer and forms lamination, at this moment takes certain means to guarantee to have between individual layer electrical sheet the problem of abundant adhesion with regard to having occurred.
In addition, be difficult to form three-dimensional shape for making the thin electrical sheet of iron core 110, can only form two-dimentional shape, if the passage of magnetic flux is 3 dimension passages, just occurred being difficult to the problem of making.
Can improve the soft magnetic powder just (SMC) (Soft Magnetic Composites) of the problems referred to above.
Soft magnetic powder shown in Fig. 3 (SMC) is that magnetisable material high permeability 140 is carried out to powdered processing, and carry out in order to make it have insulation and Pasting the metal dust raw material that coating 150 is processed, in the time making iron core taking described soft powder (SMC) as material, use mould to carry out moulding, sintering according to the form of product.
In Fig. 4, show by each soft magnetic powder (SMC) iron core 160 of said process moulding, sintering and the iron core assembly 170 being assembled by each iron core.
Mutually insulated 150 between the powder of soft magnetic powder (SMC) iron core, eddy current loss is very little, supply frequency higher compared with electrical sheet eddy current loss just less, and can realize the design of variform according to mould, because be not the mode that adopts lamination, so the dimensional accuracy of iron core is high, while making iron core assembly, the structural rigidity of iron core assembly is large.
With make iron core assembly by stacked electrical sheet compared with, use soft magnetic powder (SMC) to make an iron core piece and there is more advantage, but because need to carry out the coating processing of metal dust, so the magnetic of iron core will be weaker than electrical sheet.
That is, compared with electrical sheet, the eddy current loss of soft magnetic powder (SMC) in high frequency environment is less, the BH(magnetic flux density of soft magnetic powder (SMC) and the intensity in magnetic field) low, magnetic hysteresis loss is large, and saturation flux density is little.
As a reference, in Figure 11, illustrate the BH characteristic of electrical sheet and the BH characteristic of soft magnetic powder (SMC).
Therefore,, compared with electrical sheet iron core, the core loss of soft magnetic powder (SMC) iron core is larger, requires not to be commonly used in efficient drive motor in making.
Summary of the invention
Technical task
The object of the invention is the iron core cracking in order to prevent that stacked electrical sheet from making, the cracking of iron core or distortion while being pressed into shell, solve original problem of guaranteeing with the stator disc of the adhesion of shell.
, the present invention, by using soft magnetic powder (SMC) to make stator disc, has made up the defect of original stator disc, and then has guaranteed the additional function of electromagnetism.
Technical scheme
The present invention is the weakness that makes up original use stainless steel making stator disc, uses soft magnetic powder (SMC) material for making iron core to make stator disc.
The surface coating processing of soft magnetic powder (SMC) to Magnaglo, prevents from producing between Magnaglo eddy current, and by using magnetic material to ensure high magnetic permeability, thereby as electrical sheet, play the effect of magnetic flux path.
That is to say, the stator disc that soft magnetic powder (SMC) is made, in the performance of performance itself stator disc, can also have the function of magnetic flux path as electrical sheet.
Vehicle-mounted drive motor field frame assembly of the present invention is made up of iron core 321, the stator disc 322 that is arranged on described iron core both sides, the coil that inserts the insulator of described iron core and stator disc and be wound around described iron core.This vehicle-mounted drive motor field frame assembly is characterised in that: described iron core 321 is made up of multiple lamination electrical sheets, and described stator disc 322 is made up of soft magnetic powder (SMC).
Vehicle-mounted drive motor field frame assembly of the present invention is characterised in that: the surface configuration of described stator disc 322 is consistent with the plane surface shape of described iron core 321.
Vehicle-mounted drive motor field frame assembly of the present invention is characterised in that: the width of described stator disc 322 gear teeth 322b is less than the width of described iron core 321 gear teeth.
Vehicle-mounted drive motor field frame assembly of the present invention is characterised in that: the tooth cover 322a shape of described stator disc 322 is different from the shape of the tooth cover 322a of described iron core 321.
Vehicle-mounted drive motor field frame assembly of the present invention is characterised in that: described stator disc 322 is equipped with ledge 322aa towards one end of rotor.
Vehicle-mounted drive motor field frame assembly of the present invention is characterised in that: on the gear teeth of described stator disc 322,322b does not exist described ledge 322a.
Beneficial effect
The present invention, in guaranteeing parts performance original function, has eliminated the negative effect (eddy current loss and heating) of original parts.
In addition, according to the present invention, can make easily 3 dimension shapes, and can, in the situation that not changing motor height, obtain the effect that improves motor iron-core validity, and there is the motor power (output) of raising.
Brief description of the drawings
Fig. 1 is the exploded perspective view of motor;
Fig. 2 is BH(magnetic flux density and magnetic field intensity) performance plot;
Fig. 3 is the enlarged drawing of soft magnetic powder;
Fig. 4 is by the independent iron core of soft magnetic powder moulding and iron core assembly;
Fig. 5 is the exploded perspective view of motor;
Fig. 6 is assembled in the legend on motor casing field frame assembly;
Fig. 7 is the installation diagram of original field frame assembly;
Fig. 8 is the exemplary plot of stator disc of the present invention;
Fig. 9 is the stereogram of stator disc of the present invention;
Figure 10 is the stereogram of stator disc of the present invention;
Figure 11 is the BH performance plot of electrical sheet and soft magnetic powder.
Description of reference numerals
110: iron core; 120: coil;
130: insulator; 140: magnetisable material;
150: coating; 160: iron core separately;
170: iron core assembly; 200: motor;
210: shell; 220: field frame assembly;
230: rotor core; 240: armature spindle;
250: bearing; 260: support;
321: iron core; 322: stator disc;
322a: tooth cover; 322b: the gear teeth;
325: coil.
Embodiment
The present invention is relevant to the stator structure of vehicle-mounted drive motor, it has strengthened the structural strength of the stator core assembly 300 that stacked original electrical sheet makes, and be raising and the adhesion of shell, use soft magnetic powder (SMC) iron core 310 for motor iron-core, 50 replace the stator disc 320 of generally being made by stainless steel, play the effect of stator disc, soft magnetic powder (SMC) stator disc is consistent or similar with the core configuration of optimizing through electromagnetic property, consistent with the height of motor, structure in the present invention can improve motor performance by the height that increases the effective iron core relevant to motor performance.
Fig. 5 is the exploded view of general motor, and motor 200 is pressed into field frame assembly 220 on shell 210, and the rotor assembly being made up of rotor core 230 and armature spindle 240 is supported by bearing 250, maintains certain interval between field frame assembly 220 and rotor.
Fig. 6 illustrates the assembling process of field frame assembly 220, in the both sides of laminated iron core 221, stator disc 222 is housed, and for iron core 221 and coil 225 are insulated, inserts in order insulator 223 and wedge 224, and then winding around 225 is made field frame assembly 220.
Fig. 7 illustrates shell 210 assembling stator assemblies 220, for preventing that field frame assembly 220 from departing from or rotating from shell 210, between shell 210 and field frame assembly 220, leaves certain surplus, forces to be pressed into or hot charging.
At this moment, for preventing cracking or the distortion of stacked stator core 221, as shown in Figure 6, stator disc 222 is fixed on to the both sides of laminated iron core, is pressed into shell.
In addition, if the magnetic permeability of stator disc is high, while having magnetic flux flows in stator disc, magnetic flux can produce eddy current along with the variation of time, becomes the reason of loss and heating, and stainless magnetic permeability is very low, similar with the magnetic permeability of air, as stator disc, there is suitable characteristic.
But, stainless conductivity is very good, when electric current passes through coil, can produce small magnetic flux,
And then produce and keep eddy current, become the reason of loss and heating, reduce the performance of motor.
Different from stainless steel, when stator disc uses magnetisable material, can produce magnetic hysteresis loss, greatly reduce the performance of motor.
For improving the performance of motor, even if need not use stator disc also can prevent the method for cores pile in layers cracking or distortion, so do not use sometimes the stator disc of being made by stainless steel, but be intactly pressed into field frame assembly, or use the materials such as non-conductive, nonmagnetic plastics, but this is not extraordinary replacement scheme.
The present invention relates to the stator disc 322 of being made by the powder metallurgy of metal dust moulding, sintering, stator disc 322 of the present invention is fixed on cores pile in layers 321 both sides that electrical sheet is made, and has the function that prevents stack characteristic cracking or distortion.
As shown in Figure 3, in the present invention, use the Magnaglo of high magnetic permeability to make stator disc 322.
The iron core 321 that stator disc of the present invention 322 shown in Fig. 8 is made with electrical sheet has consistent or similar gear teeth 322A shape, plays the effect of magnetic flux path.
The stack height of supposing the iron core 321 being made up of electrical sheet is " A ", the height of stator disc 322 is " B ", stator disc 322 effect of playing magnetic flux path the same as the iron core 321 being made up of electrical sheet in the present invention, at this moment can obtain motor performance and exceed than original stack height " A " effect of " 2B+ α ".
That is, along with the increase of magnet paths height, the magnetic field of field frame assembly 220 provides revolving force to rotor 230,240, and motor performance is along with the magnet paths increasing is further enhanced.
Here, " α " different and different along with the ledge 322Aa of the ratio of electrical sheet magnetic permeability and stator disc magnetic permeability, stator disc.
In Fig. 9, illustrate the shape of stator disc ledge 322aa of the present invention.
In the present invention, suggestion is used soft magnetic powder (SMC) material to make the stator disc 322 of design.Although the non-magnetic permeability of soft magnetic powder (SMC) material will, lower than electrical sheet, through lasting research and development, even can be applied it, and then play the effect of magnetic flux path as motor iron-core material.
In addition, soft magnetic powder (SMC) is to form in metal dust 140 surface coatings processing 150 sintering, mutually insulated between metal dust, and electric current cannot flow.That is, although electrical sheet is to reduce eddy current loss must at utmost reduce the thickness of steel plate, soft magnetic powder (SMC) is because of mutually insulated between metal dust, so have advantages of and at utmost reduce eddy current loss.
In addition, because be to use mould molding, sintering to be made, be easy to make the variform including 3 dimension shapes.
Soft magnetic powder (SMC) stator disc 322 of developing in the present invention can have variform.
For optimizing electromagnetic property, can make or similar stator disc 322 consistent with the flat shape of iron core 321.
As shown in Figure 8, tooth cover 322a has various shape, although such as consistent with iron core 321, gear teeth width is slightly narrower than iron core, has the shape of structure 322A that can installing insulating body; Gear teeth width 322B consistent with iron core, at utmost reduces the shape of magnetic resistance, and three-dimensional shape correspondingly as shown in figure 10.
Fig. 9 illustrates the stator disc 322C with ledge 322aa.So-called ledge 322aa refers to the tower part of tail end higher than stator disc 322 height " B ".Ledge, in the height of gear teeth 322b part and the height of motor that intactly keeping coil is wound around, make the end height relative with rotor higher, and then acquisition makes the higher effect of iron core height proportional to moment of torsion.
In addition, the tooth cover shape of 322a of soft magnetic powder in Fig. 9 (SMC) stator disc 322 and the different 322D of shape of the tooth of iron core cover, can farthest reduce torque ripple.
Soft magnetic powder (SMC) stator disc is made according to mould molding, sintering, is very easy to make 3 dimension shapes, as shown in Figure 9, is also highly susceptible to carrying out the distortion of three-dimensional shape.
In addition, can form and at utmost reduce the interference that iron core end produces, reduce the 3D shape of revealing magnetic flux.
These lamination electrical sheets that are difficult to be made by thin plate are realized.
In contrast, be easy to carry out the distortion of 3 dimension shapes by the soft magnetic powder in the present invention of processing and forming (SMC) stator disc, and then improve the performance of motor.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (9)
1. a field frame assembly for vehicle-mounted drive motor, it is made up of iron core (321), the coil (325) that is arranged on the stator disc (322) of described iron core (321) both sides and is wound around described iron core (321), it is characterized in that,
Described iron core (321) is made up of multiple lamination electrical sheets, and described stator disc (322) is made up of soft magnetic powder.
2. the field frame assembly of vehicle-mounted drive motor according to claim 1, is characterized in that,
Described soft magnetic powder is to carry out the coating processing of high permeability from magnetic powder on surface, and described stator disc (322) is made by described soft magnetic powder sintering according to mould.
3. the field frame assembly of vehicle-mounted drive motor according to claim 1, is characterized in that,
The surface configuration of described stator disc (322) is consistent with the surface plane shape of described iron core (321).
4. the field frame assembly of vehicle-mounted drive motor according to claim 1, is characterized in that,
The gear teeth (322b) width of described stator disc (322) is less than the gear teeth width of described iron core (321).
5. the field frame assembly of vehicle-mounted drive motor according to claim 1, is characterized in that,
The gear teeth (322b) width of described stator disc (322) is identical with the gear teeth width of described iron core (321).
6. the field frame assembly of vehicle-mounted drive motor according to claim 1, is characterized in that,
Tooth cover (322a) shape of described stator disc (322) is different from the shape of the tooth cover (322a) of described iron core (321).
7. the field frame assembly of vehicle-mounted drive motor according to claim 1, is characterized in that,
Described stator disc (322) is equipped with ledge (322aa) towards one end of rotor.
8. the field frame assembly of vehicle-mounted drive motor according to claim 7, is characterized in that,
Described ledge (322aa) refers in one end of described stator disc (322), the protrusion of the prescribed level forming along described stator disc (322) short transverse.
9. the field frame assembly of vehicle-mounted drive motor according to claim 7, is characterized in that,
On the gear teeth (322b) of described stator disc (322), there is not described ledge (322a).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2012-0141776 | 2012-12-07 | ||
| KR1020120141776A KR20140073839A (en) | 2012-12-07 | 2012-12-07 | Stator assembly of a driving motor for a vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103872803A true CN103872803A (en) | 2014-06-18 |
| CN103872803B CN103872803B (en) | 2017-04-12 |
Family
ID=50911054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310286017.3A Active CN103872803B (en) | 2012-12-07 | 2013-07-09 | Stator assembly of driving motor for vehicle |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20140073839A (en) |
| CN (1) | CN103872803B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021012979A1 (en) * | 2019-07-19 | 2021-01-28 | 绵阳西磁磁电有限公司 | Method for coating composite soft magnetic material onto stator, and high-speed permanent magnet motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102004883B1 (en) * | 2018-09-17 | 2019-07-29 | (주)이플로우 | Stator bracket for securing stator core of motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783537A (en) * | 2009-01-19 | 2010-07-21 | 德昌电机(深圳)有限公司 | Iron core combination for motor |
| GB2484098A (en) * | 2010-09-29 | 2012-04-04 | Nissan Motor Mfg Uk Ltd | Dynamo-electric machine with rotor magnet adjustable shunt |
| CN202475050U (en) * | 2011-09-09 | 2012-10-03 | 山东大学威海分校 | Motor |
-
2012
- 2012-12-07 KR KR1020120141776A patent/KR20140073839A/en not_active Application Discontinuation
-
2013
- 2013-07-09 CN CN201310286017.3A patent/CN103872803B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021012979A1 (en) * | 2019-07-19 | 2021-01-28 | 绵阳西磁磁电有限公司 | Method for coating composite soft magnetic material onto stator, and high-speed permanent magnet motor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140073839A (en) | 2014-06-17 |
| CN103872803B (en) | 2017-04-12 |
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