CN107591908A - A kind of orientation silicon steel stator for disc type electric machine - Google Patents
A kind of orientation silicon steel stator for disc type electric machine Download PDFInfo
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- CN107591908A CN107591908A CN201710919689.1A CN201710919689A CN107591908A CN 107591908 A CN107591908 A CN 107591908A CN 201710919689 A CN201710919689 A CN 201710919689A CN 107591908 A CN107591908 A CN 107591908A
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Abstract
The present invention describes a kind of orientation silicon steel stator for disc type electric machine, is provided with annular stator core matrix in stator case and is located at the stator core inserts of the upper and lower end face of annular stator core matrix；The surrounding of each stator core inserts is arranged with stator winding, and a magnetic steel of stator is embedded with respectively in each stator core；Annular stator core matrix is formed by stacking using non-oriented silicon steel sheet, and described stator core inserts is formed by stacking using grain-oriented Si steel sheet.Because the present invention is by the way of non-orientation silicon steel and orientation silicon steel collective effect coordinate, multiple symmetrical stator core inserts are especially set respectively in the upper and lower end face of annular stator core matrix, form the structure of double layered stator iron core inserts, power of motor density can be thus improved in limited bulk, and still there is higher convex grey subset in the case of larger current, loss is reduced, improves motor efficiency.
Description
Technical field
The present invention relates to disc type electric machine field, more particularly to a kind of disc type electric machine provided with orientation silicon steel stator, specifically,
It is that one kind is provided with annular stator core matrix, and sets stator core embedding respectively in the upper/lower terminal of annular stator core matrix
The disc type electric machine of part.
Background technology
In the prior art, traditional magneto, because root portion is easily saturated, cogging torque is serious, therefore motor
Location torque is bigger, difficulty in starting, simultaneously because its cylinder mode, air gap can not be by caused warm in motor operation course
Amount diverging, restrict power of motor density raising, therefore in the market occur again radiating effect it is relatively good, than relatively thin disc type
Motor, the rotor of disc type electric machine is that lid is located on stator, and general stator uses coil, and rotor is using permanent magnet or is stained with forever
The disk of magnet.
Although disc type electric machine in the market can accomplish less scale in size, structure, meet the wheel of automobile
The demand of hub or wind-power electricity generation, but power density is relatively low, and because being limited by volume, structure etc., the branch such as top cover and base
Relative scale shared by the weight of support structure is bigger, and these supporting constructions can not increase the electromagnetic conversion efficiency of motor so that electricity
Machine convex grey subset in the case of larger current is relatively low, loss is high, and the drive efficiency of motor is relatively low.
The content of the invention
It is an object of the invention to provide a kind of orientation silicon steel stator for disc type electric machine, pass through the stator to disc type electric machine
Structure is changed, and stator core inserts is respectively symmetrically set by the upper and lower end in iron core yoke part, it is intended to is shown in limited bulk
Write the effect of improving motor.
To achieve these goals, the technical scheme is that：A kind of orientation silicon steel stator for disc type electric machine, it
It is main to include stator case, annular stator core matrix is provided with stator case and is located at determining for annular stator core base end
Sub- iron core inserts；The surrounding of each stator core inserts is arranged with stator winding, is embedded with respectively in each stator core certain
Magnet steel；Described annular stator core matrix is formed by stacking using non-oriented silicon steel sheet, and described stator core inserts is used and taken
It is formed by stacking to silicon steel sheet.
Preferably, described stator core inserts can be arranged at the upper surface or lower end of annular stator core matrix
Face, the upper and lower end face of annular stator core matrix can also be arranged at simultaneously.
Preferably, the upper and lower end face of annular stator core matrix is provided with the multiple axial dovetail grooves for corresponding and setting, institute
The stator core inserts one end stated is provided with the structure being engaged with axial dovetail groove so that one end of stator core inserts can just insert
Enter in axial dovetail groove；Stator core inserts is the small gradation type inlay in the big one end in one end, the structure and axle of stator core inserts
It is engaged to the structure of dovetail groove.
Preferably, described multiple axial dovetail grooves are distributed on annular stator core using stator center as round dot in divergent shape
The upper and lower end of matrix, mutually it is correspondingly arranged between the axial dovetail groove of upper surface and the axial dovetail groove of lower surface；Stator
The magnet steel embedded hole for penetrating whole stator core inserts is provided with the middle part of iron core inserts, described magnetic steel of stator is placed on magnet steel insertion
Kong Zhong, stator core inserts are formed by stacking by the grain-oriented Si steel sheet of blocks of descending gradual change, on every a piece of grain-oriented Si steel sheet
It is equipped with a magnet steel putting hole；Magnet steel putting hole of the same size is provided with per a piece of grain-oriented Si steel sheet, after being molded superposition
The embedding middle part of stator core forms magnet steel embedded hole coherent, that aperture is consistent.
Further, it is in " work " font per a piece of grain-oriented Si steel sheet, the middle part of I-shaped grain-oriented Si steel sheet is put provided with magnet steel
Hole is put, described magnet steel putting hole is square, circular or oval；The top of I-shaped grain-oriented Si steel sheet is a crossbeam knot
Structure, is set up in the top of magnet steel putting hole, and the bottom of I-shaped grain-oriented Si steel sheet is in an isosceles trapezoidal structure, the top of the isosceles trapezoid
Portion connects with magnet steel putting hole, and the matching size of the Outside Dimensions of the isosceles trapezoid and axial dovetail groove closes, the isosceles trapezoid
Height be less than axial dovetail groove depth.
Further, four angles of stator case are provided with mounting-positioning holes, and the middle part of annular stator core matrix is provided with
Installation axle.
Relative to prior art, technical scheme is except the improvement of overall technical architecture, in addition to many details
The improvement of aspect, specifically, have the advantages that：
1st, in improvement project of the present invention, by the way of non-orientation silicon steel and orientation silicon steel collective effect coordinate, especially
Multiple symmetrical stator core inserts are set respectively in the upper and lower end face of annular stator core matrix, form double layered stator iron core
The structure of inserts, can thus improve power of motor density in limited bulk, and still have in the case of larger current compared with
High convex grey subset, loss is reduced, improve motor efficiency；
2nd, in technical scheme, annular stator core matrix is formed using non-orientation silicon steel lamination, and stator core is embedding
Part is bonded using orientation silicon steel lamination, turns into one by bonding between stator core inserts and annular stator core matrix
Body.Oriented steel band is only horizontal 1/3 in the iron loss of rolling direction, and the ratio between magnetic conductivity is 6：1, its iron loss is about the 1/ of hot-rolled strip
2, magnetic conductivity is 2.5 times of hot-rolled strip.To realize that motor obtains higher convex grey subset in design driven motor, in rotor
Non-orientation silicon steel lamination is replaced using the higher orientation silicon steel lamination of magnetic conductivity, while stator pole shoes are also using taking in polarised direction
To silicon steel laminations, iron loss is effectively reduced, improves the convex grey subset of motor；
3rd, the upper and lower end face of annular stator core matrix of the invention is provided with multiple axial dovetail grooves, and one is placed in each dovetail groove
Individual stator core inserts, this oat tail groove structure not only ensure the overall co-ordination of stator core inserts and annular stator core matrix
Du Genggao, at the same can also be further ensured that motor height rotate operation when both conjugation and overall performance；
4th, stator core inserts of the invention is formed by stacking by big and small successively using multi-disc grain-oriented Si steel sheet, every orientation silicon steel
The middle part of piece is provided with a magnet steel putting hole so that it is linking up, first to be provided with one in the middle part of the stator core inserts formed after connection bonding
The consistent magnet steel embedded hole of tail diameter, magnet steel embedded hole is interior to place magnetic steel of stator, further enhancing magnetic flux, improves motor
The effect of；
5th, grain-oriented Si steel sheet of the invention is in I-shaped and is not only easily worked, while also more easy to operate in superposition, and this is I-shaped
Simple in construction, ingenious, waist caves inward the space left and be available for stator winding to wind, while also stator winding can be carried out into phase
To fixation, safety when ensureing follow-up motor operation and stably.
Brief description of the drawings
Fig. 1 is one embodiment of the invention structural representation.
Fig. 2 is the stator structure partial schematic diagram of the present invention.
Fig. 3 is the cooperation schematic diagram between the annular stator core matrix and stator core inserts of the present invention.
Fig. 4 is the local cooperation schematic diagram between the annular stator core matrix and stator core inserts of the present invention.
Fig. 5 is the stator cross-sectional view of one embodiment of the invention.
Fig. 6 is the stator cross section partial schematic diagram of one embodiment of the invention.
Fig. 7 is the schematic partial cross-sectional view that the annular stator core matrix of the present invention coordinates with stator core inserts.
Fig. 8 is the stator core inserts lamination schematic diagram of the present invention.
Fig. 9 is the punching schematic diagram of the grain-oriented Si steel sheet of the present invention.
Figure 10 is the cooperation schematic diagram of the annular stator core matrix and one semi-stator iron core inserts of installation of the present invention.
Figure 11 is the local cooperation schematic diagram of the annular stator core matrix and one semi-stator iron core inserts of installation of the present invention.
Reference：
1 stator case, 2 stator core inserts, 3 stator winding, 4 annular stator core matrixes, please illustrate 5,6,7 labels represent
Component names；
The bottom of 8 I-shaped grain-oriented Si steel sheets, 9 axial dovetail grooves, 11 magnet steel embedded holes, 12 magnet steel.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
It to be to be joined directly together, can also be indirectly connected by intermediary, can be the connection of two element internals.For this area
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
The invention provides a kind of orientation silicon steel stator for disc type electric machine, and with reference in figure 1, it mainly includes stator case
Body, its difference with the prior art are：Annular stator core matrix is provided with stator case and is located at annular stator core base
The stator core inserts in body end face；The surrounding of each stator core inserts is arranged with stator winding, and each stator core is interior respectively
It is embedded with a magnetic steel of stator；Described annular stator core matrix is formed by stacking using non-oriented silicon steel sheet, described stator iron
Core inserts is formed by stacking using grain-oriented Si steel sheet.
It should be noted that described stator core inserts can be arranged at annular stator core matrix upper surface or
Lower surface, the upper and lower end face of annular stator core matrix can also be arranged at simultaneously.It is corresponding, annular stator core matrix
Unilateral end face or upper and lower end face are provided with the multiple axial dovetail grooves for corresponding and setting, described stator core inserts one end
Provided with the structure being engaged with axial dovetail groove so that one end of stator core inserts just can be inserted into axial dovetail groove；Stator
Iron core inserts is the small gradation type inlay in the big one end in one end, and the structure of stator core inserts and the structure of axial dovetail groove match
Close.After assembling, in limited space, i.e., in the case of stator diameter inconvenience, the upper and lower end face point of annular stator core matrix
Not She You stator core matrix, form double-decker, power of motor density can be improved in limited bulk, and in larger current
In the case of still there is higher convex grey subset, reduce loss, improve motor efficiency.
In implementation, a kind of simplest form of the present invention is the disc type electric machine of single rotor, referring to Figure 10, Figure 11, stator iron
Core inserts can be arranged at annular stator core matrix one side end face, corresponding, and the unilateral end face of annular stator core matrix is set
There are the multiple axial dovetail grooves for corresponding and setting, the bottom of stator core inserts is provided with the knot being engaged with axial dovetail groove
Structure so that the bottom of stator core inserts just can be inserted into axial dovetail groove and be formed and effectively fixed, and stator core inserts is one
The gradation type inlay that big one end is small is held, the structure of stator core inserts is engaged with the structure of axial dovetail groove.Described here
Stator inlay is bonded using orientation silicon steel lamination, by being bonded between stator core inserts and annular stator core matrix
It is integrated.Oriented steel band is only horizontal 1/3 in the iron loss of rolling direction, and the ratio between magnetic conductivity is 6：1, its iron loss is about hot-rolled strip
1/2, magnetic conductivity is 2.5 times of hot-rolled strip.To realize that motor obtains higher convex grey subset in design driven motor,
Non-orientation silicon steel lamination is replaced using the higher orientation silicon steel lamination of magnetic conductivity in rotor polarised direction, while stator pole shoes also make
With orientation silicon steel lamination, iron loss is effectively reduced, improves the convex grey subset of motor.
In one embodiment, referring in Fig. 3, Fig. 4, described multiple axial dovetail grooves are that round dot is in hair using stator center
Bulk is distributed on the upper and lower end of annular stator core matrix, the axial dovetail groove of upper surface and the axial dovetail of lower surface
Mutually it is correspondingly arranged between groove, described axial dovetail groove one end is small-rabbet end, and the other end is big notch end, described sulculus
Mouth end is connected with the inwall of annular stator core matrix, and big notch end is connected with the outer wall of annular stator core matrix, this
Sample can ensure stator core inserts axially dovetail groove is caught in after operation firmness, in motor rotation process, stator
Iron core inserts is firmly arranged in axial dovetail groove all the time.
Further, the magnet steel embedded hole for penetrating whole stator core inserts is provided with the middle part of stator core inserts（It can join
See Fig. 6）, described magnetic steel of stator is placed in magnet steel embedded hole, and stator core inserts is taken by blocks of descending gradual change
It is formed by stacking to silicon steel sheet, gradual change described here can be gradual change piecewise or carry out gradual change paragraph by paragraph（It is so-called piecewise
Gradual change refers to that adjacent 2-5 chip sizes orientation silicon steel lamination of the same size has size progressively between forming one section, each section
Change, then size is identical for the orientation silicon steel lamination in each section）.
Further, it is equipped with a magnet steel putting hole on every a piece of grain-oriented Si steel sheet；It is provided with per a piece of grain-oriented Si steel sheet
Magnet steel putting hole of the same size, make to form magnetic coherent, that head and the tail aperture is consistent in the middle part of the stator core part after superposition shaping
Steel embedded hole, can thus be put into magnet steel in magnet steel embedded hole, the effect of strengthening motor, at the same add magnet steel size,
Quantity can carry out reasonable selection according to rating of machine, effect.
In another embodiment, it is in " work " font per a piece of grain-oriented Si steel sheet referring in Fig. 8, I-shaped oriented silicon
The middle part of steel disc is provided with magnet steel putting hole, and described magnet steel putting hole is square, circular or oval；Further, it is each
The top of the I-shaped grain-oriented Si steel sheet of piece is a beam structure, is set up in the top of magnet steel putting hole, per a piece of I-shaped oriented silicon
The bottom of steel disc is in an isosceles trapezoidal structure, and bottom is connecting portion, and the top of the isosceles trapezoid connects with magnet steel putting hole, such
The matching size of the trapezoidal Outside Dimensions of waist and axial dovetail groove closes, and the height of the isosceles trapezoid is less than the depth of axial dovetail groove
Degree.Both sides per a piece of I-shaped grain-oriented Si steel sheet are the stator winding wound portion to cave inward, due to I-shaped grain-oriented Si steel sheet
Top and bottom structure so that stator winding can be relatively fixed in wound portion, reliable, stable when ensureing stator operation and
Safety., can be rationally and effectively in whole orientation silicon steel meanwhile the grain-oriented Si steel sheet of this spline structure is also more convenient in processing
Required I-shaped grain-oriented Si steel sheet is punched on piece（Referring to Fig. 9）, the space of layout is saved, and then save grain-oriented Si steel sheet
Raw material usable floor area.
In one embodiment, four angles of stator case are provided with mounting-positioning holes, in annular stator core matrix
Portion is provided with installation axle.Stator core matrix is formed by stacking using non-oriented silicon steel sheet, and all nothings for making stator core matrix take
The annular lamination of unified specification size is each formed as to silicon steel sheet, is located at one section of annular nothing of the upper and lower end face of stator core matrix
It is respectively arranged with the same size, equally distributed dovetail groove on grain-oriented Si steel sheet, the quantity of dovetail groove is 24 in the present embodiment,
Referring specifically to Fig. 1, Fig. 3, the annular non-oriented silicon steel sheet of pars intermedia does not open up dovetail groove then, it is however generally that, the thickness of interlude
More than the thickness of dovetail groove, to ensure the not interfereing with each other property of integrally-built stability and upper and lower end face.
Then, the stator core inserts to match with dovetail groove is made, silicon steel sheet is descending arranges successively by some orientations
Row, form stator core inserts after bonding layer by layer（Referring to Fig. 8）, described stator core inserts lower surface is and axial dovetail groove
The plane that bottom land fits, stator core inserts upper surface are plane, by viscous between stator core inserts and axial dovetail groove
Mixture bonds.Then stator core inserts is sequentially embedded in dovetail groove, then magnet steel is placed in stator core inserts, each
Individual stator core inserts surrounding winds stator winding, completes the installation of stator.In specific implementation, stator core inserts bottom is in
Oat tail groove structure, the structure are to be fitted with axial dovetail groove, ensure that stator core inserts can firmly be installed on stator
On iron core matrix, the top of stator core inserts can be arranged to bottom identical oat tail groove structure, can also be according to reality
Needing of installing and use is designed to rectangle structure（It is an equal amount of from beginning to end）.
Stator core inserts described here is formed by stacking by big and small successively using multi-disc grain-oriented Si steel sheet, and stator iron
Core matrix is formed by stacking using non-oriented silicon steel sheet, and both generate unexpected effect after being engaged so that motor
Higher convex grey subset is obtained, iron loss is effectively reduced, improves the convex grey subset of motor.For further composite excitation, every takes
A magnet steel putting hole is provided with to the middle part of silicon steel sheet so that it is coherent to be provided with one in the middle part of the stator core inserts formed after connection bonding
, the magnet steel embedded hole that head and the tail diameter is consistent, magnetic steel of stator is placed in magnet steel embedded hole, electricity caused by this composite excitation is common
Owner magnetic field, it is possible to achieve the main field regulation and control of motor, the ability with regulation air-gap field, improvement electric machine speed regulation,
Driveability or voltage adjustment characteristic.
The specific embodiment of the present invention is described in detail above, but it is intended only as example, it is of the invention and unlimited
It is formed on particular embodiments described above.To those skilled in the art, it is any to the equivalent modifications that carry out of the present invention and
Substitute also all among scope of the invention.Therefore, the impartial conversion made without departing from the spirit and scope of the invention and
Modification, all should be contained within the scope of the invention.
Claims (6)
1. a kind of orientation silicon steel stator for disc type electric machine, it mainly includes stator case, it is characterised in that：In stator case
Provided with annular stator core matrix and the stator core inserts for being located at annular stator core base end；
The surrounding of each stator core inserts is arranged with stator winding, and a magnetic steel of stator is embedded with respectively in each stator core；
Described annular stator core matrix is formed by stacking using non-oriented silicon steel sheet, and described stator core inserts is using orientation
Silicon steel sheet is formed by stacking.
A kind of 2. orientation silicon steel stator for disc type electric machine according to claim 1, it is characterised in that：Annular stator iron
The unilateral end face or upper and lower end face of core matrix are simultaneously provided with the multiple axial dovetail grooves for corresponding setting, described stator
Iron core inserts one end is provided with the structure being engaged with axial dovetail groove so that one end of stator core inserts just can be inserted into axial swallow
In stern notch；
Stator core inserts is the small gradation type inlay in the big one end in one end, the structure of stator core inserts and the knot of axial dovetail groove
Structure is engaged.
A kind of 3. orientation silicon steel stator for disc type electric machine according to claim 2, it is characterised in that：Described is multiple
Axial dovetail groove is distributed on the upper and lower end of annular stator core matrix, upper surface using stator center as round dot in divergent shape
Axial dovetail groove and lower surface axial dovetail groove between be mutually correspondingly arranged；
The magnet steel embedded hole for penetrating whole stator core inserts is provided with the middle part of stator core inserts, described magnetic steel of stator is placed on
In magnet steel embedded hole, stator core inserts is formed by stacking by the grain-oriented Si steel sheet of blocks of descending gradual change, per a piece of orientation
A magnet steel putting hole is equipped with silicon steel sheet；Magnet steel putting hole of the same size is provided with per a piece of grain-oriented Si steel sheet, makes superposition
The embedding middle part of stator core after shaping forms magnet steel embedded hole coherent, that aperture is consistent.
A kind of 4. orientation silicon steel stator for disc type electric machine according to claim 1, it is characterised in that：Per a piece of orientation
Silicon steel sheet is in " work " font, and the middle part of I-shaped grain-oriented Si steel sheet is provided with magnet steel putting hole, and described magnet steel putting hole is side
Shape, circle or ellipse；
The top of I-shaped grain-oriented Si steel sheet is a beam structure, is set up in the top of magnet steel putting hole, I-shaped grain-oriented Si steel sheet
Bottom be in an isosceles trapezoidal structure, the top of the isosceles trapezoid connects with magnet steel putting hole, the Outside Dimensions of the isosceles trapezoid
Closed with the matching size of axial dovetail groove, the height of the isosceles trapezoid is less than the depth of axial dovetail groove.
A kind of 5. orientation silicon steel stator for disc type electric machine according to claim 1, it is characterised in that：Stator case
Four angles are provided with mounting-positioning holes, and the middle part of annular stator core matrix is provided with installation axle.
A kind of 6. orientation silicon steel stator for disc type electric machine according to claim 1, it is characterised in that：Some orientation silicon
Steel disc is descending to be arranged in order, bond layer by layer after form stator core inserts, described stator core inserts lower surface be with
The plane that axial dovetail groove bottom land fits, stator core inserts upper surface are plane, stator core inserts and axial dovetail groove
Between pass through adhesives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919689.1A CN107591908A (en) | 2017-09-30 | 2017-09-30 | A kind of orientation silicon steel stator for disc type electric machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710919689.1A CN107591908A (en) | 2017-09-30 | 2017-09-30 | A kind of orientation silicon steel stator for disc type electric machine |
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Cited By (4)
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| CN109687616A (en) * | 2019-02-25 | 2019-04-26 | 河北工业大学 | Novel permanent magnetic saturable synchronous magnetic resistance motor |
| CN110212727A (en) * | 2018-12-29 | 2019-09-06 | 苏州英磁新能源科技有限公司 | A kind of Permanent magnet axial flux motor |
| CN110492629A (en) * | 2019-09-04 | 2019-11-22 | 上海盘毂动力科技股份有限公司 | A kind of disc type iron core and disc type electric machine |
| CN117471183A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | Stator core loss measuring device |
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