CN103872803B - Stator assembly of driving motor for vehicle - Google Patents
Stator assembly of driving motor for vehicle Download PDFInfo
- Publication number
- CN103872803B CN103872803B CN201310286017.3A CN201310286017A CN103872803B CN 103872803 B CN103872803 B CN 103872803B CN 201310286017 A CN201310286017 A CN 201310286017A CN 103872803 B CN103872803 B CN 103872803B
- 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.)
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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, refers specifically to by soft magnetic powder（SMC）Constitute
Stator disc field frame assembly.
Background technology
In terms of electromagnetism, the structure of motor belongs to functional parts, as shown in figure 1, by iron core 110, coil 120
And insulator 130 is constituted.
Coil 120 forms circuit, plays the magnetomotive source effect of generation, and iron core 110 plays to form the magnetomotive force（Magnetic
Flux）The effect of passage, it is recommended here that using the little material of the magnetic resistance that the quantity of magnetism can be made quickly to flow.
In addition, insulator 130 is located between coil and iron core 110, for being electrically insulated, it is ensured that the electric current from power supply only exists
Flowing in coil, iron core or electric motor structure will not leak electricity, and so as to improve the performance of motor, prevent the generation of electric shock accidentss.
The performance for wanting to improve motor is accomplished by using high performance material, and the particularly suggestion of iron core 110 is using magnetic resistance, magnetic
Stagnant and eddy current loss is little, the high material of saturation flux density.
Square being directly proportional for the size of vortex and material thickness, is to reduce eddy current loss, it should using thin electrical sheet
Make high-performance iron core.
In addition, as shown in Fig. 2 the gradient of curve tangent line described in B-H loop is consistent with pcrmeability, being to reduce magnetic
Stagnant loss, iron core is using the high material of pcrmeability.
But, when being used for motor by the iron core 110 that thin electrical sheet makes, need as shown in figure 1, piling up multilamellar shape
Into lamination, at this moment occur as soon as and taken certain means to guarantee the problem with abundant adhesion between monolayer electrical sheet.
In addition, the thin electrical sheet for making iron core 110 is hardly formed the shape of solid, the shape of two dimension is can be only formed
Shape, if the passage of magnetic flux is 3-dimensional passage, has occurred as soon as the problem for being difficult to make.
The exactly soft magnetic powder of the problems referred to above can be improved（SMC）（Soft Magnetic Composites）.
Soft magnetic powder shown in Fig. 3（SMC）It is that permeability high magnetisable material 140 is carried out into powdered process, and in order to
Make it have insulation and Pasting and carry out the metal dust raw material of the process of coating 150, with the soft powder（SMC）For
When material makes iron core, molding, sintering are carried out using mould according to the form of product.
The each soft magnetic powder by said process molding, sintering is shown in Fig. 4（SMC）Iron core 160 and by each iron core group
The iron core assembly 170 of dress.
Soft magnetic powder（SMC）Mutually insulated 150 between the powder of iron core, eddy current loss is very little, and supply frequency gets over Gao Yu electricity
Gas steel plate compares that eddy current loss is less, and the design of variform can be realized according to mould, because not being using lamination
Mode, so the dimensional accuracy of iron core is high, when making iron core assembly, the structural rigidity of iron core assembly is big.
Compared with by being laminated electrical sheet making iron core assembly, using soft magnetic powder（SMC）Make an iron core block tool
There are more advantages, but since it is desired that carry out the coating treatment of metal dust, so the magnetic of iron core will be weaker than electrical sheet.
That is, compared with electrical sheet, soft magnetic powder（SMC）Eddy current loss in high frequency environment is less, soft magnetic powder
（SMC）BH（Magnetic flux density and the intensity in magnetic field）Low, magnetic hysteresis loss is big, and saturation flux density is little.
As reference, the BH characteristics and soft magnetic powder of electrical sheet in Figure 11, are illustrated（SMC）BH characteristics.
Therefore, compared with electrical sheet iron core, soft magnetic powder（SMC）The core loss of iron core is bigger, has high demands in making
It is not commonly used in the drive motor of effect.
The content of the invention
Technical task
The invention aims to prevent from being laminated the iron core cracking that electrical sheet makes, the cracking of iron core when being pressed into shell
Or distortion, solve to guarantee the original problem with the stator disc of the adhesion of shell.
That is, by the present invention in that using soft magnetic powder（SMC）Stator disc is made, the defect of original stator disc is compensate for, and then
Ensure that the additional function of electromagnetism.
Technical scheme
The present invention makes the weakness of stator disc to make up original use rustless steel, using for making the soft magnet powder of iron core
End（SMC）Material makes stator disc.
Soft magnetic powder（SMC）The surface coating of Magnaglo is processed, prevents between Magnaglo, producing vortex, and
High magnetic permeability is ensured by using magnetic material, so as to play a part of magnetic flux path as electrical sheet.
That is, soft magnetic powder（SMC）The stator disc of making may be used also while the performance of itself stator disc is played
With the function with magnetic flux path as electrical sheet.
The vehicle-mounted drive motor field frame assembly of the present invention is by iron core 321, installed in the stator disc of the iron core both sides
322nd, insert the coil composition of the insulator and the winding iron core of the iron core and stator disc.This vehicle-mounted drive motor is fixed
Sub- assembly is characterised by：The iron core 321 is made up of multiple lamination electrical sheets, and the stator disc 322 is by soft magnetic powder
（SMC）Constitute.
The vehicle-mounted drive motor field frame assembly of the present invention is characterised by：The surface configuration of the stator disc 322 and institute
The plane surface shape for stating iron core 321 is consistent.
The vehicle-mounted drive motor field frame assembly of the present invention is characterised by：The width of 322 gear teeth 322b of the stator disc
Less than the width of 321 gear teeth of the iron core.
The vehicle-mounted drive motor field frame assembly of the present invention is characterised by：The tooth set 322a shapes of the stator disc 322
It is different from the shape that the tooth of the iron core 321 covers 322a.
The vehicle-mounted drive motor field frame assembly of the present invention is characterised by：The one end of the stator disc 322 towards rotor
Equipped with ledge 322aa.
The vehicle-mounted drive motor field frame assembly of the present invention is characterised by：On the gear teeth of the stator disc 322,322b is not
There is the ledge 322a.
Beneficial effect
The present invention eliminates the negative effect of original part while guaranteeing that part plays original function（Eddy current loss and
Heating）.
In addition, according to the present invention, can easily make 3-dimensional shape, and motor height can not changed
In the case of, the effect for improving motor iron-core effectiveness is obtained, and has the advantages that to improve motor power (output).
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 single iron core and iron core assembly of soft magnetic powder molding；
Fig. 5 is the exploded perspective view of motor；
Fig. 6 is legend field frame assembly being assembled on motor casing；
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 axonometric chart of stator disc of the present invention；
Figure 10 is the axonometric chart of stator disc of the present invention；
Figure 11 is the BH performance plots of electrical sheet and soft magnetic powder.
Description of reference numerals
110:Iron core; 120:Coil;
130:Insulator; 140:Magnetisable material;
150:Coating; 160:Independent iron core;
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 set; 322b：The gear teeth;
325：Coil.
Specific embodiment
Of the invention related to the stator structure of vehicle-mounted drive motor, it strengthens determining for the original electrical sheet making of stacking
The structural strength of sub- iron core assembly 300, and to improve the adhesion with shell, using the soft magnetic powder for motor iron-core
（SMC）Iron core 310,50 replaces the stator disc 320 for typically being made by rustless steel, plays a part of stator disc, soft magnetic powder（SMC）
Stator disc is consistent with the core configuration optimized through electromagnetic property or similar, highly consistent with motor, the knot in the present invention
Structure can pass through the height of the effective iron core for increasing related to motor performance and improve motor performance.
Fig. 5 is the exploded view of general motor, and motor 200 is pressed into field frame assembly 220 on shell 210, by rotor ferrum
The rotor assembly of core 230 and the composition of armature spindle 240 is supported by bearing 250, between remaining certain between field frame assembly 220 and rotor
Every.
Fig. 6 illustrates the assembling process of field frame assembly 220, stator disc 222 is housed in the both sides of laminated iron core 221, to make
Iron core 221 and coil 225 insulate, and insert insulator 223 and wedge 224 in order, are then around the making stator of coil 225 total
Into 220.
Fig. 7 is illustrated to 210 assembling stator assembly 220 of shell, to prevent field frame assembly 220 from departing from from shell 210 or
Rotation, leaves certain surplus between shell 210 and field frame assembly 220, carries out forcing press-in or hot charging.
At this moment, to prevent cracking or the distortion of laminated stator iron core 221, as shown in fig. 6, stator disc 222 is fixed on layer
The both sides of folded iron core, are pressed into shell.
Stator disc 222 has certain intensity, to prevent magnetic flux from revealing, main to use with namagnetic substance characteristic not
Rust steel.
In addition, if the pcrmeability of stator disc is high, when having magnetic flux flows in stator disc, the change that magnetic flux can be over time is produced
Raw vortex, the reason for becoming loss and generate heat, stainless pcrmeability is very low, similar with the pcrmeability of air, as stator disc,
With appropriate characteristic.
But, stainless electric conductivity is very good, when electric current passes through coil, can produce small magnetic flux,
And then vortex is produced and keeps, the reason for becoming loss and generate heat, reduce the performance of motor.
It is different from rustless steel, when stator disc uses magnetisable material, magnetic hysteresis loss can be produced, the property of motor is substantially reduced
Energy.
To improve the performance of motor, even if needing not using stator disc also prevent cores pile in layers cracking or the side for distorting
Method, so not using the stator disc made by rustless steel sometimes, but is intactly pressed into field frame assembly, or is led using non-
Electrically, the material such as nonmagnetic plastics, but this all not very good replacement scheme.
The present invention relates to the stator disc 322 made by the powder metallurgy of metal dust molding, sintering, the stator of the present invention
Disk 322 is fixed on 321 both sides of cores pile in layers of electrical sheet making, with the function of preventing stack characteristic cracking or distort.
As shown in figure 3, the Magnaglo of high magnetic permeability makes stator disc 322 used in the present invention.
The iron core 321 that stator disc 322 and the electrical sheet of the present invention shown in Fig. 8 is made has identical or similar
Gear teeth 322A shapes, play a part of magnetic flux path.
It is assumed that the stack height of the iron core 321 being made up of electrical sheet is " A ", the height of stator disc 322 is " B ", at this
In invention, stator disc 322 plays a part of magnetic flux path as the iron core 321 being made up of electrical sheet, at this moment can obtain electronic
Machine performance is higher by the effect of " 2B+ α " than original stack height " A ".
That is, with the increase of magnet paths height, the magnetic field of field frame assembly 220 provides revolving force, electricity to rotor 230,240
Motivation performance is further enhanced with increased magnet paths.
Here, " α " is with ratio of the electrical sheet pcrmeability with stator disc pcrmeability, the ledge 322Aa of stator disc
It is different and different.
The shape of the stator disc ledge 322aa of the present invention is illustrated in Fig. 9.
Suggestion in the present invention uses soft magnetic powder（SMC）Material makes the stator disc 322 of design.Although soft magnetic powder
（SMC）The non-pcrmeability of material will be less than electrical sheet, but through lasting research and development, it might even be possible to using it as motor iron-core
Material is applied, and then plays a part of magnetic flux path.
In addition, soft magnetic powder（SMC）It is to process 150 and sinter in 140 surface coating of metal dust to form, metal powder
Mutually insulated between end, electric current cannot flow.I.e., although electrical sheet must at utmost reduce steel plate to reduce eddy current loss
Thickness, but soft magnetic powder（SMC）Because of mutually insulated between metal dust, so with the excellent of at utmost reduction eddy current loss
Point.
In addition, because being made using mould molding, sintering, being easy to make including many including 3-dimensional shape
Plant form.
The soft magnetic powder developed in the present invention（SMC）Stator disc 322 can have variform.
To optimize electromagnetic property, the identical or similar stator disc 322 with the flat shape of iron core 321 can be made.
As shown in figure 8, tooth set 322a has various shapes, although such as consistent with iron core 321, gear teeth width ratio iron core is omited
It is narrow, the shape with structure 322A that can install insulator；Wheel tooth width 322B consistent with iron core, at utmost reduces magnetic resistance
Shape, three-dimensional shape correspondingly is as shown in Figure 10.
Fig. 9 illustrates the stator disc 322C with ledge 322aa.It is high that so-called ledge 322aa refers to tail end
In the part of towering of 322 height " B " of stator disc.The gear teeth 322b parts that ledge is wound in intactly keeping coil
Height and motor height while so that the end height relative with rotor is higher, so obtain make it is proportional to moment of torsion
The iron core higher effect of height.
In addition, soft magnetic powder in Fig. 9（SMC）The shape that the shape of tooth set 322a of stator disc 322 is covered with the tooth of iron core is not
Same 322D, can farthest reduce torque ripple.
Soft magnetic powder（SMC）Stator disc is made according to mould molding, sintering, is very easy to make 3-dimensional shape, such as schemes
Shown in 9, it is also very easy to carry out the deformation of three-dimensional shape.
In addition, can be formed, the 3D shapes for revealing magnetic flux are reduced.
These are difficult to be realized by the lamination electrical sheet that thin plate makes.
In contrast, by the soft magnetic powder in the present invention of processing and forming（SMC）Stator disc is easy to carry out 3
The deformation of dimension shape, and then improve the performance of motor.
The above, only presently preferred embodiments of the present invention is not intended to limit protection scope of the present invention.
Claims (7)
1. a kind of field frame assembly of vehicle-mounted drive motor, which is by iron core (321), determining installed in the iron core (321) both sides
Coil (325) composition of sub-disk (322) and the winding iron core (321), it is characterised in that
The iron core (321) is made up of multiple lamination electrical sheets, and the stator disc (322) is made up of soft magnetic powder,
The width of the gear teeth (322b) of the stator disc (322) less than the iron core (321) the gear teeth width or with it is described
The width of the gear teeth of iron core (321) is identical.
2. the field frame assembly of vehicle-mounted drive motor according to claim 1, it is characterised in that
The soft magnetic powder is to carry out coating treatment of the high permeability from magnetic powder on surface, and the stator disc (322) is according to mould
Tool is made by soft magnetic powder sintering.
3. the field frame assembly of vehicle-mounted drive motor according to claim 1, it is characterised in that
The surface configuration of the stator disc (322) is consistent with the surface plane shape of the iron core (321).
4. the field frame assembly of vehicle-mounted drive motor according to claim 1, it is characterised in that
Tooth set (322a) shape of the stator disc (322) is different from the shape of the tooth set (322a) of the iron core (321).
5. the field frame assembly of vehicle-mounted drive motor according to claim 1, it is characterised in that
The stator disc (322) is equipped with ledge (322aa) towards one end of rotor.
6. the field frame assembly of vehicle-mounted drive motor according to claim 5, it is characterised in that
The ledge (322aa) is referred in one end of the stator disc (322), along the stator disc (322) height
The outthrust of the prescribed level that direction is formed.
7. the field frame assembly of vehicle-mounted drive motor according to claim 5, it is characterised in that
There is no the ledge (322aa) on the gear teeth (322b) of the stator disc (322).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120141776A KR20140073839A (en) | 2012-12-07 | 2012-12-07 | Stator assembly of a driving motor for a vehicle |
| KR10-2012-0141776 | 2012-12-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103872803A CN103872803A (en) | 2014-06-18 |
| CN103872803B true 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) |
Families Citing this family (2)
| 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 |
| CN110266152B (en) * | 2019-07-19 | 2022-07-26 | 绵阳西磁磁电有限公司 | Method for coating composite soft magnetic material on stator and high-speed permanent magnet motor thereof |
Citations (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
Patent Citations (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140073839A (en) | 2014-06-17 |
| CN103872803A (en) | 2014-06-18 |
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