CN108711977A - Rotor and magneto - Google Patents
Rotor and magneto Download PDFInfo
- Publication number
- CN108711977A CN108711977A CN201810664012.2A CN201810664012A CN108711977A CN 108711977 A CN108711977 A CN 108711977A CN 201810664012 A CN201810664012 A CN 201810664012A CN 108711977 A CN108711977 A CN 108711977A
- Authority
- CN
- China
- Prior art keywords
- wall surface
- slot
- magnetic
- rotor
- rotor core
- 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.)
- Pending
Links
Classifications
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The present invention provides a kind of rotor and magneto, the rotor includes rotor core, and the rotor core includes multiple circumferentially distributed magnetic poles, and each magnetic pole includes the first magnetic slot；First magnetic slot is symmetry axis and the center line along the radial distribution of the rotor core using center line；First magnetic slot includes outside wall surface, internal face and two side walls face, wherein：The outside wall surface and internal face are respectively plane and are respectively perpendicular to the center line；Two side wall surfaces are located at the both ends of first magnetic slot, and are separately connected the outside wall surface and internal face；There is the peak shape protrusion for being convex to the rotor core peripheral surface, and the end of first magnet steel is located at the inside of peak shape protrusion in each side wall surface.The present invention while reducing rotor core leakage field, can reduce the mechanical stress at rotor first magnetic slot both ends in high-speed cruising by increasing peak shape protrusion at the both ends of the first magnetic slot.
Description
Technical field
The present invention relates to motor fields, more specifically to a kind of rotor and magneto.
Background technology
Environmental pollution and energy crisis promote new-energy automobile industry, especially electric vehicle industry to flourish, automobile-used
Crucial execution unit one of of the driving motor as electric vehicle, performance is most important for the performance of vehicle.Due to having
The advantages that higher power density and higher efficiency, magneto has been widely used in automobile drive motor field.In order to
The power density of drive system is promoted, the mode that generally use magneto and retarder coordinate to provide driving to electric vehicle
Power.
Due to the special operating condition of electric vehicle, it usually needs magneto has higher power density, therefore electricity
The maximum speed of machine is usually higher.And higher rotating speed, also cause the centrifugal force of permanent magnet machine rotor larger, therefore the machine of rotor
Tool intensity is most important to the stable operation of motor.
As shown in Figure 1, for the structural schematic diagram of conventional rotors, there are multiple magnetic slots 11 on the rotor core 1 of the rotor,
And there is magnet steel 2 in each magnetic slot 11.Due in motor high speed rotation, 12 institute of magnet steel 2 and magnetic bridge on rotor core 1
The centrifugal force being subject to increases, and relatively thin magnetic bridge can be caused to be broken, to make magnet steel 2 and magnetic bridge 12 disperse.In order to promote rotor iron
The mechanical strength of core, generally use intensity higher silicon steel sheet reduce deformation when rotor high-speed cruising, promote the machine of rotor
Tool intensity.In addition can also the mechanical strength of key position be promoted using thicker magnetic bridge 12, while uses larger chamfering
Reduce stress, especially apart from rotor surface compared with the close and end positions of the larger magnetic slot 11 in turning at.
However, in above-mentioned rotor, although the silicon steel sheet of high intensity can promote the mechanical strength of rotor and reduce rotor
Deformation, but the price of the silicon steel sheet of high intensity is relatively high, will greatly increase the cost of magneto entirety.Also, it is thicker
Magnetic bridge 12 can also increase the leakage field of magneto while increasing mechanical strength, reduce the capacity of magneto, pass through
It sacrifices torque performance and is unfavorable for realizing the peak use rate of magnet steel to promote the mechanical strength of rotor.
Invention content
The technical problem to be solved in the present invention is, higher for above-mentioned permanent magnet machine rotor cost, be unfavorable for realizing magnetic
The problem of steel peak use rate, provides a kind of rotor and magneto.
The technical solution that the present invention solves above-mentioned technical problem is to provide a kind of rotor, including rotor core, the rotor
Iron core includes multiple circumferentially distributed magnetic poles, and each magnetic pole includes the first magnetic slot for installing the first magnet steel；Described
One magnetic slot is symmetry axis and the center line along the radial distribution of the rotor core using center line；The first magnetic slot packet
Outside wall surface, internal face and two side walls face are included, wherein：The outside wall surface and internal face are respectively plane and are respectively perpendicular to institute
State center line；Two side wall surfaces are located at the both ends of first magnetic slot, and are separately connected the outside wall surface and interior
Wall surface；There is the peak shape protrusion for being convex to the rotor core peripheral surface, and the end of first magnet steel in each side wall surface
Portion is located at the inside of peak shape protrusion.
In rotor of the present invention, each side wall surface include outer side surface, interior sidewall surface and connection wall surface,
And the first end of the outer side surface is connected to the outside wall surface, the first end of the interior sidewall surface is connected to the internal face,
The both ends of the connection wall surface are connected respectively to the second end of the second end and the interior sidewall surface of the outer side surface；The peak
Shape protrusion is located at the outer side surface.
In rotor of the present invention, the outer side surface includes the first surface for being connected to the outside wall surface, connection
The second curved surface to the connection wall surface and the connection plane between the first surface and the second curved surface, and the company
It is tangent with the first surface, the second curved surface respectively to connect plane.
In rotor of the present invention, the section of the first surface is made of the first conic section, and described first
The center of conic section is located at the outside of first magnetic slot；The section of second curved surface is made of second secondary curve,
And the center of the second secondary curve is located at the inside of first magnetic slot.
In rotor of the present invention, first conic section is made of the first elliptical circular arc, and described first
The length of elliptical long axis is 1.5~1.7 times of the length of short axle, the first elliptical long axis and first magnetic slot
Angle between center line is 20 °~25 °；The second secondary curve is made of the second elliptical circular arc, and described second ellipse
The length of round long axis is 4~6 times of the length of short axle, the center line of the second elliptical long axis and first magnetic slot
Between angle be 60 °~65 °.
In rotor of the present invention, the interior sidewall surface is made of plane, and in the interior sidewall surface with it is described interior
Wall surface joint has fin, and the end of the first magnet steel is fixed by the fin；The connection wall surface respectively with it is described outer
Side wall surface and interior sidewall surface are tangent, and the section of the connection wall surface is made of the elliptical circular arc of third；The third is elliptical
Center is located in first magnetic slot, and the length of the elliptical long axis of the third be 1.3~1.6 times of the length of short axle,
Angle between the elliptical long axis of the third and the center line of first magnetic slot is 50 °~55 °.
In rotor of the present invention, each magnetic pole includes positioned at at least two auxiliary of the rotor core periphery
Slot is helped, at least two auxiliary tank is symmetrical along the center line, and the depth of each auxiliary tank is 0.5~1mm.
In rotor of the present invention, the auxiliary tank includes that central shaft is respectively parallel to the rotor core central shaft
The first arc surface, the second arc surface and third arc surface, second arc surface is connected to first arc surface and
Between three-arc face, and the other side of first arc surface and third arc surface is connected respectively to the periphery of rotor core；Institute
It states the first arc surface and the central shaft of third arc surface is located in the rotor core, the central shaft of second arc surface is located at
Outside the rotor core；The radius of first arc surface, the second arc surface and third arc surface is 0.8~1.2mm.
In rotor of the present invention, each magnetic pole includes two the second magnetic for being respectively used to the second magnet steel of installation
Steel tank, and described two second magnetic slots are V-shaped symmetrical in the center line both sides；First magnetic slot with described turn
The first magnetic bridge is formed between the periphery of sub- iron core, and the second magnetic is formed between second magnetic slot and the periphery of the rotor core
Bridge, the auxiliary tank is between first magnetic bridge and the second magnetic bridge.
In rotor of the present invention, second magnetic slot includes the first V-arrangement side wall surface, the second V-arrangement side wall surface, outer
End wall surface and inner end wall surface；The first V-arrangement side wall surface and the second V-arrangement side wall surface are plane, the outer end wall surface and inner end
First V-arrangement side wall surface, the second V-arrangement side wall surface are connected by wall surface so that second magnetic slot becomes a closed emptying aperture.
In rotor of the present invention, outer end wall bread upper wall surface containing slot, the first wall surface of slot side and slot side second
The tangential angle of wall surface, the slot upper wall surface and the rotor core is less than 5 °, and first wall surface of slot side is connected to described
Between slot upper wall surface and the first V-arrangement side wall surface, second wall surface of slot side be connected to the slot upper wall surface and the second V-arrangement side wall surface
Between.
In rotor of the present invention, the both sides of the slot upper wall surface are distinguished using chamfering mode tangent outside bielliptic(al)
It is connected to first wall surface of slot side and the second wall surface of slot side.
In rotor of the present invention, the slot upper wall surface includes the 4th arc surface, and section of the 4th arc surface
The section constitution isocentric circular arc in face and the periphery of the rotor core.
The present invention also provides a kind of magnetoes, including rotor as described above.
Rotor and magneto of the present invention are reducing rotor iron by increasing peak shape protrusion at the both ends of the first magnetic slot
While core leakage field, the mechanical stress at rotor first magnetic slot both ends in high-speed cruising can be reduced.
The present invention also by the second magnet steel that arrangement is V-arrangement and the first magnet steel that arrangement is I types, realizes preferable poly- magnetic
Effect is conducive to the anti-demagnetization capability for promoting magnet steel, and can effectively reduce d-axis inductance, to increase reluctance torque.
Also, since the second magnetic slot arranged as V-arrangement is using bielliptic(al) reversely tangent at rotor core surface
Structure is conducive to be promoted the mechanical strength at this, and is conducive to the reduction of magnetic bridge thickness at this, reduces leakage field, promotes torque.
Description of the drawings
Fig. 1 is the schematic diagram of existing permanent magnetic electric machine rotor iron core；
Fig. 2 is the schematic diagram of rotor embodiment of the present invention；
Fig. 3 is the schematic diagram of the embodiment of a magnetic pole of rotor of the present invention；
Fig. 4 is the close-up schematic view at A in Fig. 3；
Fig. 5 is the close-up schematic view at B in Fig. 3；
Fig. 6 is structural stress schematic diagram of the rotor of the present invention in the first magnetic slot end and the second magnetic slot end；
Fig. 7 is structural stress schematic diagram of the existing rotor in I type magnetic slots end；
Fig. 8 is Distribution of Magnetic Field schematic diagram of the rotor of the present invention in the first magnetic slot end；
Fig. 9 is Distribution of Magnetic Field schematic diagram of the existing rotor in I type magnetic slots end；
Figure 10 is line voltage harmonic contrast's schematic diagram of rotor of the present invention and existing rotor；
Figure 11 is the close-up schematic view at C in Fig. 3；
Figure 12 is Distribution of Magnetic Field schematic diagram of the rotor of the present invention in the second magnetic slot end；
Figure 13 is Distribution of Magnetic Field schematic diagram of the existing rotor in V-type magnetic slot end；
Figure 14 is structural stress schematic diagram of the existing rotor in V-type magnetic slot end；
Figure 15 is the stator schematic diagram in magneto of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figures 2-3, it is the schematic diagram of rotor embodiment of the present invention, which can be applied to magneto.This implementation
Rotor in example includes rotor core 3 (rotor core 3 can specifically be rushed folded form by silicon steel sheet), which includes more
A circumferentially distributed magnetic pole, and each magnetic pole includes the first magnetic slot 31 for installing the first magnet steel (I types magnet steel) 4.This
One magnetic slot 31 is axisymmetricly distributed by symmetry axis (O is the central shaft of rotor core 3) of center line Od, and above-mentioned center line Od
Along the radial distribution of rotor core, i.e., the body normal of the first magnetic slot 31 is in radial center line Od.
Above-mentioned first magnetic slot 31 includes outside wall surface 311, internal face 312 and two side walls face, wherein above-mentioned outside wall surface
311 and internal face 312 be respectively plane and to be respectively perpendicular to center line Od；Two side wall surfaces are located at the first magnetic slot
31 both ends, and it is separately connected the end of outside wall surface 311 and internal face 312.The outside wall surface 311 and internal face of first magnetic slot 31
312 is parallel with the surface of the first magnet steel 4 respectively, and outside wall surface 311 is located at the side, interior of the peripheral surface close to rotor core 3
Wall surface 312 is located at the side of the central shaft close to rotor core 3, and when the first magnet steel 4 is installed to the first magnetic slot 31, this first
The both side surface of magnet steel 4 is affixed on outside wall surface 311 and internal face 312 respectively.Have in each side wall surface and is convex to the outer of rotor core 3
The peak shape protrusion of circumferential surface is (i.e. as from the end of outside wall surface 311, to the direction far from outside wall surface 311, side wall surface is apart from rotor iron
The distance of the periphery of core 3 gradually increases after first reducing), and the end of the first magnet steel 4 is located at (i.e. close turn of the inside of peak shape protrusion
The side of the central shaft of sub- iron core 3), i.e., the length (i.e. the size of horizontal direction in Fig. 3) of outside wall surface 311 is less than the first magnet steel 4
Length.Particularly, the end of above-mentioned first magnet steel 4 is located at the vertex of peak shape protrusion (i.e. closest to the peripheral surface of rotor core 3
Point) inside.
Above-mentioned rotor can be ensured by increasing peak shape protrusion in the end of the first magnetic slot 31 while reducing leakage field
Mechanical strength of the rotor core 3 in the end of the first magnetic slot 31.
As shown in figure 4, above-mentioned each side wall mask body may include outer side surface, interior sidewall surface 317 and connection wall surface
316, and the first end of outer side surface is connected to outside wall surface 311, the first end of interior sidewall surface 317 is connected to internal face 312, connection
The both ends of wall surface 316 are connected respectively to the second end of the second end and interior sidewall surface 317 of outer side surface；Peak shape protrusion is located at outside
Wall surface, i.e. outer side surface from 311 joint of outside wall surface to connecting wall surface 316, the peripheral surface of the outer side surface and rotor core 3
Distance first reduce, rear gradually increase.
Specifically, above-mentioned outer side surface includes the first surface 313 for being connected to outside wall surface 311, is connected to connection wall surface 316
The second curved surface 315 and the connection plane 314 between first surface 313 and the second curved surface 315, and connect plane 314
Distinguish respectively with first surface 313, the second curved surface 315 tangent.
The section (perpendicular to the section of the central shaft of rotor core 3) of above-mentioned first surface 313 specifically can be secondary by first
Curve is constituted, and the center E1 of first conic section is located at the outside of the first magnetic slot 31；It (hangs down in the section of second curved surface 315
Directly in the section of the central shaft of rotor core 3) it is made of second secondary curve, and the center E2 of the second secondary curve is located at the
The inside of one magnetic slot 31.Particularly, above-mentioned first conic section is made of the first elliptical circular arc, and the first elliptical length
The length of axis is 1.5~1.7 times of the length of short axle, between the first elliptical long axis and the center line Od of the first magnetic slot 31
Angle be 20 °~25 °；Second secondary curve is made of the second elliptical circular arc, and the length of the second elliptical long axis is
Angle between 4~6 times of the length of short axle, the second elliptical long axis and the center line Od of first magnetic slot 31 is
60 °~65 °.
Interior sidewall surface 317 is made of plane, and rotor core 3 has in interior sidewall surface 317 with 312 joint of internal face
Fin 318, and fix by the fin 318 end of first magnet steel 4.Connect wall surface 316 and the second curved surface 315, interior sidewall surface
317 difference are tangent, and the connection wall surface 316 is made of third curved surface, and the section of the third curved surface is (perpendicular to rotor core 3
Central shaft section) be equally made of conic section, that is, third conic section, and the third conic section be third it is elliptical
The center E3 of a part, the third conic section is located in the first magnetic slot 31, and the elliptical long axis length of third is that short axle is long
1.3~1.6 times of degree, the angle between long axis and the center line Od of the first magnetic slot 31 is 50 °~55 °.The company of above structure
Connect the turnover mechanical stress that wall surface 316 advantageously reduces outer side surface and 317 junction of interior sidewall surface.
Also, in the center E1 of above-mentioned first conic section, the center E2 and third conic section of second secondary curve
The distance of central shaft Os of the heart E3 apart from rotor core 3 is gradually reduced, to be conducive to the formation of peak type protrusion on outer side surface.
First surface 313 on outer side surface and connection plane 314, are conducive to reduce leakage field, while can be by first
The stress of the rotor core 3 of the exterior portion of magnet steel 4 and first magnet steel 4 disperses, and prevents the stress concentration at this in outside wall surface
Junction between 311 and side wall surface.In addition, the second curved surface 315 on outer side surface and with the tangent connection that connect wall surface 316
Mode, the mechanical stress for being equally beneficial for will be close to outside wall surface 311 are dispersed in outer side surface and connect wall surface 316 and its outer
Side rotor core part, while being conducive to reduction magnetic bridge along the relatively long outer side surface of the circumferencial direction of rotor core 3 and (turning
Part on sub- iron core 3 between outer side surface and peripheral surface) equivalent thickness, to reduce leakage field.At the same time, due to outer wall
The length in face 311 is less than the length of magnet steel, coordinates the shape of the above-mentioned outer side surface, is conducive to the line voltage harmonic wave for reducing motor
Component.
As shown in Figure 6,7, due to the presence of peak shape protrusion, relative to the rotor iron for not using peak shape convex type side wall surface
Core, the maximum machine stress at the side wall surface at the both ends of the first magnetic slot 31 have been reduced to 283Mpa by 331.7MPa.
As shown in Fig. 3,5, each magnetic pole further includes at least two auxiliary tanks, and two auxiliary tanks are located at rotor core 3
Periphery.Above-mentioned two auxiliary tank is symmetrical along center line Od, and the depth of each auxiliary tank is 0.5~1mm.Assist groove depth
Spend the shallower influence for being conducive to reduce windmill loss and reduce it to quadrature circuit.
Above-mentioned auxiliary tank includes the first arc surface 331, the second arc surface 332 and third arc surface 333, and the first circular arc
The central shaft in face 331, the second arc surface 332 and third arc surface 333 is respectively parallel to the central shaft of rotor core 3.It is above-mentioned
Second arc surface 332 is connected between the first arc surface 331 and third arc surface 333, and the first arc surface 331 and third circular arc
The other side in face 333 is connected respectively to the periphery of rotor core 3.The section of above-mentioned first arc surface 331 is (perpendicular to rotor core
Central shaft section) center E4 and third arc surface 333 section (perpendicular to the section of the central shaft of rotor core)
Center E6 is located at interior, the second arc surface 332 the section of rotor core 3 (perpendicular to the section of the central shaft of rotor core)
Center E5 is then located at outside rotor core 3.To keep the depth of auxiliary tank shallower, above-mentioned first arc surface 331, the second arc surface 332
And the radius of third arc surface 333 is 0.8~1.2mm.As described in Figure 10, compared to existing rotor, above-mentioned auxiliary
Slot and peak shape male cooperation, can further decrease the corresponding line voltage harmonic component of rotor, improve vibration noise of motor problem.
And as shown in Figure 8,9, relative to conventional rotor configuration, above-mentioned the first magnetic slot 31 with peak shape protrusion and
The leakage field at the first magnet steel 4 can be obviously reduced in the quadrature axis auxiliary tank on the surface of rotor core 3, to ensure that motor torque is defeated
Go out.
As shown in figure 3, each magnetic pole further includes two the second magnetic for being respectively used to the second magnet steel of installation (i.e. V-type magnet steel) 5
Steel tank 32, and this two the second magnetic slots 32 are V-shaped symmetrical in the both sides of center line Od.First magnetic slot 31 and rotor iron
The first magnetic bridge is formed between the periphery of core 3, forms the second magnetic bridge between the second magnetic slot 32 and the periphery of rotor core 3, is assisted
Slot is between the first magnetic bridge and the second magnetic bridge.
Above-mentioned second magnetic slot 32 includes the first V-arrangement side wall surface 321, the second V-arrangement side wall surface 322, (close turn of outer end wall surface
The side of the periphery of sub- iron core 3) and inner end wall surface (close to the side of the central shaft of rotor core 3).Above-mentioned first V-arrangement side wall
Face 321 and the second V-arrangement side wall surface 322 are plane, and the first V-arrangement side wall surface 321 and the second V-arrangement side wall surface 322 are respectively with second
The surface of magnet steel 5 is parallel, and the first V-arrangement side wall surface 321, the second V-arrangement side wall surface 22 are connected by outer end wall surface with inner end wall surface, make
Obtaining the second magnetic slot 32 becomes a closed emptying aperture.
Outer end wall surface and inner end wall surface are all constituted by straight line and conic section are tangent, this is primarily to reduce wall surface turnover
The mechanical stress at place, and reduce influence of the chamfering to electromagnetic performance as far as possible.
As shown in figure 11, specifically, the second wall surface of outer end wall bread upper wall surface containing slot, the first wall surface of slot side and slot side, and
The first wall surface of slot side and the second wall surface of slot side are connected to the both ends of slot upper wall surface.Above-mentioned slot upper wall surface it is tangentially-arranged or with cut
There is slightly angle to direction (the tangential angle with rotor core 3 is less than 5 °).The first wall surface of slot side is connected on the slot
Between wall surface and the first V-arrangement side wall surface 321, the second wall surface of slot side is connected between slot upper wall surface and the second V-arrangement side wall surface 322.
In high speed operation of motor, the rotor core part and the first magnet steel 4 between two the second magnet steel 5 are by huge
Centrifugal force has the offset movement (from the central axial outer rise of rotor core 3) along radial direction, while the second magnet steel 5
The rotor core part in outside also has the offset movement (from the central axial outer rise of rotor core 3) along radial direction,
The two offset movement can cause the outer end wall surface of the second magnetic slot 32 to bear huge mechanical stress.Generally for reduce this at
Mechanical stress in high-speed cruising, will increase the second magnetic bridge, (i.e. rotor core 3 is located at the second magnetic slot 32 and rotor core 3
Periphery between part) thickness, but this can undoubtedly increase the leakage field of motor.Meanwhile slot upper wall surface and the first wall of slot side
Face connects turning point with the second wall surface of slot side and will produce huge turnover mechanical stress.
The both sides of slot upper wall surface are connected respectively to the first wall surface of slot side and slot side using chamfering mode tangent outside bielliptic(al)
Second wall surface.Slot upper wall surface includes the 4th curved surface 324, the 5th curved surface 325 and the 4th arc surface 323.4th arc surface 323 with
The periphery of rotor core 3 is coaxial, this advantageously allows the constant distance of the 4th arc surface 323 and the periphery of rotor core 3, to
So that the mechanical stress at this is uniformly distributed.The section of 4th curved surface 324 is made of the 4th ellipse, the 4th elliptical section
Center is in E7, and the 4th oval points of tangency between the section of the 4th arc surface 323 is Q1；The section of 5th curved surface 325 by
5th it is oval constitute, the 5th elliptical center is E8, and the 5th oval points of tangency between the section of the 4th arc surface 323
It can be connected as a virtual line Q1Q2 for Q2, two points of tangency Q1 and Q2.It is above-mentioned the 4th oval and with E8 centered on E7
Centered on the 5th ellipse in, between the angle between the 4th elliptical long axis and virtual line Q1Q2 is 5 ° to 7 °, the 5th is ellipse
Angle between circle and virtual line Q1Q2 is similarly between 5 ° to 7 °.Pass through above structure so that slot upper wall surface middle section
It is equal with a distance from the periphery of rotor core 3, and the part extended towards direction of both ends along slot upper wall is from rotor core 3
The distance of periphery is slowly increased, and to form the second magnetic bridge of basic uniform thickness, is achieved the effect that evenly dispersed stress, is prevented stress
Slot upper wall surface is concentrated on, especially prevents stress concentration at the 4th curved surface 324 and the 5th curved surface 325.
Since conventional circular chamfering can make the slot upper wall surface stress concentration of the second magnetic slot 32 in connection turning point, for drop
Mechanical stress at low outer end wall surface, prevents it to be broken in high-speed cruising, and the thickness for reducing the second magnetic bridge as far as possible comes
The leakage field for reducing motor, needs external end wall surface to optimize.Specifically, outer end wall surface is fallen using tangent outside bielliptic(al)
Angle mode (i.e. only there are one point of contacts for two ellipses as intersection, and not one is oval in another ellipse).Specifically, slot side
First wall surface is made of the 6th curved surface 326, and the section of the 6th curved surface 326 is made of a 6th elliptical part, and the 6th
Between elliptical center is E9, and the angle of the 6th transverse and virtual line segment Q1Q2 are 80 ° to 85 °, the first wall surface of slot side
It is tangent with the 4th curved surface 334, i.e., turning point is connected at this using tangent chamfering mode outside bielliptic(al), is conducive to that connection is avoided to transfer
Locate the concentration of mechanical stress.The other side of the first wall surface of slot side and the first V-arrangement side wall surface 321 are tangent, the first V-arrangement side wall surface 321
Extended line intersect with slot upper wall surface.The second wall surface of slot side is made of the 7th curved surface 327 and the 8th curved surface 328, and the 7th curved surface
327 section is made of a 7th elliptical part, and the 7th elliptical center is E10, and long axis is with virtual line segment Q1Q2's
Between angle is 60 ° to 65 °；7th curved surface 327 and the 5th curved surface 325 are tangent, i.e., using tangent chamfering side outside bielliptic(al) at this
Formula is conducive to the concentration for avoiding connection turning point mechanical stress.7th curved surface 327 and the 8th curved surface 328 are tangent, the 8th curved surface
328 section can be conic section, and the extended line of the conic section intersects the (the in practical applications, the 8th with slot upper wall surface
Curved surface 328 also can be by plane replacement).By above-mentioned chamfering mode, on the one hand so that slot upper wall surface length is longer and apart from rotor
The periphery of iron core 3 apart from substantially constant so that mechanical stress is evenly dispersed at slot upper wall surface, on the other hand also can
Effective dispersion slot upper wall surface connect the turnover mechanical stress of turning point (in conjunction with Fig. 6 with the first wall surface of slot side and the second wall surface of slot side
And Figure 14), to prevent connection turning point to be broken due to huge mechanical stress in the high rotating speed of motor.Simultaneously as should
Locate effective reduction of mechanical stress, the thickness of the second magnetic bridge can effectively reduce, to reduce the leakage field at this, such as Figure 12,13
Comparison.
The present invention also provides a kind of magneto, which can reduce rotor high-speed cruising mechanical stress and promote electricity
Magnetic property.The magneto includes casing, rotor as shown in Figure 2 and stator 6 as shown in figure 15, above-mentioned rotor and stator
6 are installed in casing, and have air gap (thickness of air gap and the power of motor etc. between the inner wall of rotor outer wall and stator 6
Grade, the first magnet steel 4 in rotor core 3, the magnetic steel material selected by the second magnet steel 5 and the processing of stator 6 and assembly technology have
It closes).Above-mentioned magneto is made of 8 pole, 48 slot Double Layer Winding, certainly, in practical applications, the magnetic pole of rotor and the slot of stator
Quantity can select according to actual needs.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (14)
1. a kind of rotor, including rotor core, the rotor core includes multiple circumferentially distributed magnetic poles, and each magnetic pole includes
The first magnetic slot for installing the first magnet steel；First magnetic slot is using center line as symmetry axis and the center line is described in
The radial distribution of rotor core；It is characterized in that, first magnetic slot includes outside wall surface, internal face and two side walls face,
Wherein：The outside wall surface and internal face are respectively plane and are respectively perpendicular to the center line；Two side wall surfaces distinguish position
In the both ends of first magnetic slot, and it is separately connected the outside wall surface and internal face；Have in each side wall surface and is convex to
The peak shape protrusion of the rotor core peripheral surface, and the end of first magnet steel is located at the inside of peak shape protrusion.
2. rotor according to claim 1, which is characterized in that each side wall surface includes outer side surface, interior sidewall surface
And connection wall surface, and the first end of the outer side surface is connected to the outside wall surface, the connection of the first end of the interior sidewall surface
It is connected respectively to the second end of the outer side surface and the interior sidewall surface to the both ends of the internal face, the connection wall surface
Second end；The peak shape protrusion is located at the outer side surface.
3. rotor according to claim 2, which is characterized in that the outer side surface includes be connected to the outside wall surface
One curved surface, the second curved surface for being connected to the connection wall surface and the connection between the first surface and the second curved surface are put down
Face, and the connection plane is tangent with the first surface, the second curved surface respectively.
4. rotor according to claim 3, which is characterized in that the section of the first surface is by the first conic section structure
At, and the center of first conic section is located at the outside of first magnetic slot；The section of second curved surface is by second
Conic section is constituted, and the center of the second secondary curve is located at the inside of first magnetic slot.
5. rotor according to claim 4, which is characterized in that first conic section is by the first elliptical circular arc structure
At, and the length of the first elliptical long axis is 1.5~1.7 times of the length of short axle, the first elliptical long axis and institute
It is 20 °~25 ° to state the angle between the center line of the first magnetic slot；The second secondary curve is by the second elliptical circular arc structure
At, and the length of the second elliptical long axis is 4~6 times of the length of short axle, the second elliptical long axis and described the
Angle between the center line of one magnetic slot is 60 °~65 °.
6. rotor according to claim 5, which is characterized in that the interior sidewall surface is made of plane, and the madial wall
There is fin with the internal face joint on face, and fix the end of the first magnet steel by the fin；The connection wall surface
It is tangent with the outer side surface and interior sidewall surface respectively, and the section of the connection wall surface is made of the elliptical circular arc of third；Institute
It states the elliptical center of third to be located in first magnetic slot, and the length of the elliptical long axis of the third is the length of short axle
Angle between 1.3~1.6 times, the elliptical long axis of the third and the center line of first magnetic slot is 50 °~55 °.
7. rotor according to claim 1, which is characterized in that each magnetic pole includes being located at the rotor core periphery
At least two auxiliary tanks, at least two auxiliary tank is symmetrical along the center line, and the depth of each auxiliary tank
Degree is 0.5~1mm.
8. rotor according to claim 7, which is characterized in that the auxiliary tank includes that central shaft is respectively parallel to described turn
The first arc surface, the second arc surface and the third arc surface of sub- core center axis, second arc surface are connected to described
Between one arc surface and third arc surface, and the other side of first arc surface and third arc surface is connected respectively to rotor iron
The periphery of core；The central shaft of first arc surface and third arc surface is located in the rotor core, second arc surface
Central shaft be located at outside the rotor core；The radius of first arc surface, the second arc surface and third arc surface is 0.8
~1.2mm.
9. rotor according to claim 8, which is characterized in that each magnetic pole is respectively used to installation second including two
Second magnetic slot of magnet steel, and described two second magnetic slots are V-shaped symmetrical in the center line both sides；First magnetic
Form the first magnetic bridge between steel tank and the periphery of the rotor core, the periphery of second magnetic slot and the rotor core it
Between form the second magnetic bridge, the auxiliary tank is between first magnetic bridge and the second magnetic bridge.
10. rotor according to claim 9, which is characterized in that second magnetic slot includes the first V-arrangement side wall surface, the
Two V-arrangement side wall surfaces, outer end wall surface and inner end wall surface；The first V-arrangement side wall surface and the second V-arrangement side wall surface are plane, described
First V-arrangement side wall surface, the second V-arrangement side wall surface are connected by outer end wall surface with inner end wall surface so that second magnetic slot becomes
One closed emptying aperture.
11. rotor according to claim 10, which is characterized in that outer end wall bread upper wall surface containing slot, slot side first
The tangential angle of the second wall surface of wall surface and slot side, the slot upper wall surface and the rotor core is less than 5 °, the slot side first
Wall surface is connected between the slot upper wall surface and the first V-arrangement side wall surface, second wall surface of slot side is connected to the slot upper wall surface
Between the second V-arrangement side wall surface.
12. rotor according to claim 11, which is characterized in that the both sides of the slot upper wall surface are using tangent outside bielliptic(al)
Chamfering mode be connected respectively to first wall surface of slot side and the second wall surface of slot side.
13. rotor according to claim 11, which is characterized in that the slot upper wall surface includes the 4th arc surface, and described
The section constitution isocentric circular arc in the section of the 4th arc surface and the periphery of the rotor core.
14. a kind of magneto, which is characterized in that include the rotor as described in any one of claim 1-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810664012.2A CN108711977A (en) | 2018-06-25 | 2018-06-25 | Rotor and magneto |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810664012.2A CN108711977A (en) | 2018-06-25 | 2018-06-25 | Rotor and magneto |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108711977A true CN108711977A (en) | 2018-10-26 |
Family
ID=63873132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810664012.2A Pending CN108711977A (en) | 2018-06-25 | 2018-06-25 | Rotor and magneto |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108711977A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504772A (en) * | 2019-08-13 | 2019-11-26 | 宁波安信数控技术有限公司 | A kind of built-in permanent magnet motor rotor punching |
| CN110752685A (en) * | 2019-09-30 | 2020-02-04 | 华为技术有限公司 | Rotor iron chip, rotor iron core, rotor, permanent magnet synchronous motor and related products |
| EP3672028A1 (en) * | 2018-12-17 | 2020-06-24 | Valeo Siemens eAutomotive Germany GmbH | Rotor plate, rotor and electric machine and method for producing a rotor |
| CN112953055A (en) * | 2021-01-25 | 2021-06-11 | 中国第一汽车股份有限公司 | Rotor structure, motor and vehicle |
| DE102020115286A1 (en) | 2020-06-09 | 2021-12-09 | Schaeffler Technologies AG & Co. KG | Electric motor with pockets for holding magnets |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1914863A2 (en) * | 2006-10-20 | 2008-04-23 | Kabushiki Kaisha Toshiba | Permanent-magnet reluctance electrical rotary machine |
| US20120223607A1 (en) * | 2011-03-03 | 2012-09-06 | Denso Corporation | Electric rotating machine |
| CN102916512A (en) * | 2012-10-31 | 2013-02-06 | 大洋电机新动力科技有限公司 | Oblique pole rotor structure of permanent magnet synchronous motor |
| US20130119817A1 (en) * | 2011-11-14 | 2013-05-16 | Fanuc Corporation | Rotor of permanent magnet synchronous motor, motor and machine tool |
| JP2013099193A (en) * | 2011-11-04 | 2013-05-20 | Suzuki Motor Corp | Electric rotary machine |
| JP2013162617A (en) * | 2012-02-03 | 2013-08-19 | Denso Corp | Rotor of rotary electric machine |
| CN103339831A (en) * | 2011-02-03 | 2013-10-02 | 丰田自动车株式会社 | Rotor for electric machine |
| CN103872824A (en) * | 2012-12-18 | 2014-06-18 | 发那科株式会社 | Rotor of internal permanent magnet synchronous motor and internal permanent magnet sycnronous motor |
| JP2015149791A (en) * | 2014-02-04 | 2015-08-20 | トヨタ自動車株式会社 | Rotor of dynamo-electric machine |
| CN204741351U (en) * | 2015-07-06 | 2015-11-04 | 温岭市中大摩托车部件有限公司 | Rotor blade of silicon steel for PMSM |
| CN205231875U (en) * | 2015-12-04 | 2016-05-11 | 新安乃达驱动技术(上海)有限公司 | Servo motor's rotor structure and servo motor |
| EP3021459A1 (en) * | 2014-11-07 | 2016-05-18 | Toyota Jidosha Kabushiki Kaisha | Rotor structure |
| CN106130224A (en) * | 2016-08-18 | 2016-11-16 | 南京高传电机制造有限公司 | Permanent magnetic speed-adjusting automobile drive electric motor |
| CN205791860U (en) * | 2016-07-11 | 2016-12-07 | 江苏金坛绿能新能源科技有限公司 | A kind of rotor structure for permanent magnet motor |
| CN106329774A (en) * | 2016-09-14 | 2017-01-11 | 南京航空航天大学 | Multilayer segmented built-in permanent magnet synchronous motor used for electric automobile driving |
| WO2017202319A1 (en) * | 2016-05-27 | 2017-11-30 | 比亚迪股份有限公司 | Permanent magnet synchronous motor and electric vehicle |
| CN107437858A (en) * | 2016-05-27 | 2017-12-05 | 比亚迪股份有限公司 | Motor rotor punching sheet, rotor, motor and electric automobile |
| CN107528397A (en) * | 2016-06-15 | 2017-12-29 | 福特全球技术公司 | Rotor |
| JP2018074890A (en) * | 2016-10-25 | 2018-05-10 | 株式会社豊田自動織機 | Rotary electric machine |
| CN208316443U (en) * | 2018-06-25 | 2019-01-01 | 苏州汇川联合动力系统有限公司 | Rotor and magneto |
-
2018
- 2018-06-25 CN CN201810664012.2A patent/CN108711977A/en active Pending
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1914863A2 (en) * | 2006-10-20 | 2008-04-23 | Kabushiki Kaisha Toshiba | Permanent-magnet reluctance electrical rotary machine |
| CN103339831A (en) * | 2011-02-03 | 2013-10-02 | 丰田自动车株式会社 | Rotor for electric machine |
| US20120223607A1 (en) * | 2011-03-03 | 2012-09-06 | Denso Corporation | Electric rotating machine |
| JP2013099193A (en) * | 2011-11-04 | 2013-05-20 | Suzuki Motor Corp | Electric rotary machine |
| US20130119817A1 (en) * | 2011-11-14 | 2013-05-16 | Fanuc Corporation | Rotor of permanent magnet synchronous motor, motor and machine tool |
| JP2013162617A (en) * | 2012-02-03 | 2013-08-19 | Denso Corp | Rotor of rotary electric machine |
| CN102916512A (en) * | 2012-10-31 | 2013-02-06 | 大洋电机新动力科技有限公司 | Oblique pole rotor structure of permanent magnet synchronous motor |
| CN103872824A (en) * | 2012-12-18 | 2014-06-18 | 发那科株式会社 | Rotor of internal permanent magnet synchronous motor and internal permanent magnet sycnronous motor |
| JP2015149791A (en) * | 2014-02-04 | 2015-08-20 | トヨタ自動車株式会社 | Rotor of dynamo-electric machine |
| CN105591476A (en) * | 2014-11-07 | 2016-05-18 | 丰田自动车株式会社 | Rotor structure |
| EP3021459A1 (en) * | 2014-11-07 | 2016-05-18 | Toyota Jidosha Kabushiki Kaisha | Rotor structure |
| CN204741351U (en) * | 2015-07-06 | 2015-11-04 | 温岭市中大摩托车部件有限公司 | Rotor blade of silicon steel for PMSM |
| CN205231875U (en) * | 2015-12-04 | 2016-05-11 | 新安乃达驱动技术(上海)有限公司 | Servo motor's rotor structure and servo motor |
| WO2017202319A1 (en) * | 2016-05-27 | 2017-11-30 | 比亚迪股份有限公司 | Permanent magnet synchronous motor and electric vehicle |
| CN107437858A (en) * | 2016-05-27 | 2017-12-05 | 比亚迪股份有限公司 | Motor rotor punching sheet, rotor, motor and electric automobile |
| CN107528397A (en) * | 2016-06-15 | 2017-12-29 | 福特全球技术公司 | Rotor |
| CN205791860U (en) * | 2016-07-11 | 2016-12-07 | 江苏金坛绿能新能源科技有限公司 | A kind of rotor structure for permanent magnet motor |
| CN106130224A (en) * | 2016-08-18 | 2016-11-16 | 南京高传电机制造有限公司 | Permanent magnetic speed-adjusting automobile drive electric motor |
| CN106329774A (en) * | 2016-09-14 | 2017-01-11 | 南京航空航天大学 | Multilayer segmented built-in permanent magnet synchronous motor used for electric automobile driving |
| JP2018074890A (en) * | 2016-10-25 | 2018-05-10 | 株式会社豊田自動織機 | Rotary electric machine |
| CN208316443U (en) * | 2018-06-25 | 2019-01-01 | 苏州汇川联合动力系统有限公司 | Rotor and magneto |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3672028A1 (en) * | 2018-12-17 | 2020-06-24 | Valeo Siemens eAutomotive Germany GmbH | Rotor plate, rotor and electric machine and method for producing a rotor |
| CN110504772A (en) * | 2019-08-13 | 2019-11-26 | 宁波安信数控技术有限公司 | A kind of built-in permanent magnet motor rotor punching |
| CN110752685A (en) * | 2019-09-30 | 2020-02-04 | 华为技术有限公司 | Rotor iron chip, rotor iron core, rotor, permanent magnet synchronous motor and related products |
| WO2021063014A1 (en) * | 2019-09-30 | 2021-04-08 | 华为技术有限公司 | Rotor core lamination, rotor core, rotor, permanent magnet synchronous electric motor, and related product |
| DE102020115286A1 (en) | 2020-06-09 | 2021-12-09 | Schaeffler Technologies AG & Co. KG | Electric motor with pockets for holding magnets |
| WO2021249590A1 (en) * | 2020-06-09 | 2021-12-16 | Schaeffler Technologies AG & Co. KG | Electric motor with receiving pockets for receiving magnets |
| CN112953055A (en) * | 2021-01-25 | 2021-06-11 | 中国第一汽车股份有限公司 | Rotor structure, motor and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208316443U (en) | Rotor and magneto | |
| CN108711977A (en) | Rotor and magneto | |
| CN110798039A (en) | double-V-shaped motor rotor applied to permanent magnet synchronous motor of electric automobile | |
| CN212726607U (en) | Rotor punching sheet, rotor core, rotor, motor and vehicle | |
| CN113489189A (en) | Permanent magnet motor rotor punching sheet for vehicle and oblique pole structure thereof | |
| CN208316442U (en) | Rotor and magneto | |
| CN210041465U (en) | Rotor punching sheet and motor | |
| CN112821618A (en) | Segmented eccentric integrated magnetic pole structure of hub motor | |
| CN112968557B (en) | Motor rotor, motor, car | |
| WO2023077966A1 (en) | Electric motor and vehicle | |
| CN112583151A (en) | Rotor of motor, driving motor and vehicle | |
| CN215772705U (en) | Permanent magnet motor rotor punching sheet for vehicle and oblique pole structure thereof | |
| CN113949184B (en) | Rotor punching sheet, rotor and motor using same | |
| CN210724356U (en) | Rotor of motor, driving motor and vehicle | |
| CN114069918A (en) | Rotor punching sheet, rotor core, rotor, motor and vehicle | |
| CN113315283A (en) | Rotor, motor and automobile | |
| CN112910133A (en) | Motor rotor, motor, car | |
| CN220492719U (en) | Coreless permanent magnet synchronous motor rotor | |
| WO2024021887A1 (en) | Rotor punching sheet, rotor core, rotor, motor and vehicle | |
| CN220775484U (en) | Permanent magnet auxiliary synchronous reluctance motor rotor structure and permanent magnet auxiliary synchronous reluctance motor | |
| CN110752682A (en) | Outer rotor permanent magnet motor | |
| WO2022160617A1 (en) | Rotor punching sheet, rotor iron core, rotor, electric motor, and vehicle | |
| CN219067949U (en) | Generator rotor | |
| CN216851474U (en) | Motor rotor, motor and electric automobile | |
| CN218867999U (en) | Rotor punching sheet, rotor core, rotor, motor, compressor and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 215000 52 tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Applicant after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Applicant before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |
|
| CB02 | Change of applicant information |