CN208316443U - Rotor and magneto - Google Patents
Rotor and magneto Download PDFInfo
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- CN208316443U CN208316443U CN201820982910.8U CN201820982910U CN208316443U CN 208316443 U CN208316443 U CN 208316443U CN 201820982910 U CN201820982910 U CN 201820982910U CN 208316443 U CN208316443 U CN 208316443U
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Abstract
It includes rotor core that the utility model, which provides a kind of rotor and magneto, the rotor, and the rotor core includes multiple circumferentially distributed magnetic poles, and each magnetic pole includes the first magnetic slot；First magnetic slot using center line as symmetry axis and the center line along the rotor core radial distribution；First magnetic slot includes outside wall surface, inner wall and two side walls face, in which: the outside wall surface and inner wall 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 inner wall；There is the peak shape protrusion for being convex to the rotor core outer peripheral surface, and the end of first magnet steel is located at the inside of the peak shape protrusion in each side wall surface.The utility model 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 utility model relates to motor fields, more specifically to a kind of rotor and magneto.
Background technique
Environmental pollution and energy crisis promote new-energy automobile industry, especially electric car industry to flourish, automobile-used
Crucial execution unit one of of the driving motor as electric car, performance are 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 for promoting drive system, the mode for generalling use magneto and retarder cooperation to provide driving to electric car
Power.
Due to the special operating condition of electric car, it usually needs magneto has higher power density, therefore electricity
The maximum speed of machine is usually higher.And higher revolving 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, being 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 to 12 institute of magnet steel 2 and magnetic bridge in motor high speed rotation, on rotor core 1
The centrifugal force being subject to increases, and will lead to relatively thin magnetic bridge fracture, so that magnet steel 2 and magnetic bridge 12 be made to disperse.In order to promote rotor iron
The mechanical strength of core generallys use the higher silicon steel sheet of intensity to reduce deformation when rotor high-speed cruising, promotes the machine of rotor
Tool intensity.In addition the mechanical strength of key position can also be promoted using thicker magnetic bridge 12, while using biggish chamfering
Reduce stress, especially apart from rotor surface compared with the close and end positions of the biggish magnetic slot 11 in turning at.
However, in above-mentioned rotor, although high-intensitive silicon steel sheet can promote the mechanical strength of rotor and reduce rotor
Deformation, but the price of high-intensitive silicon steel sheet is relatively high, will greatly increase the cost of magneto entirety.Also, it is thicker
Magnetic bridge 12 also will increase the leakage field of magneto while increasing mechanical strength, reduces the capacity of magneto, passes through
Torque performance is sacrificed to promote the mechanical strength of rotor and be unfavorable for realizing the peak use rate of magnet steel.
Utility model content
The technical problem to be solved by the present invention is to for above-mentioned permanent magnet machine rotor higher cost, be unfavorable for reality
The problem of existing magnet steel peak use rate, provides a kind of rotor and magneto.
The technical solution that the utility model solves above-mentioned technical problem is to provide a kind of rotor, including rotor core, described
Rotor core includes multiple circumferentially distributed magnetic poles, and each magnetic pole includes the first magnetic slot for installing the first magnet steel；Institute
The first magnetic slot is stated using center line as symmetry axis and the center line along the rotor core radial distribution；First magnet steel
Slot includes outside wall surface, inner wall and two side walls face, in which: the outside wall surface and inner wall are respectively plane and are respectively perpendicular
In 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 inner wall；There is the peak shape protrusion for being convex to the rotor core outer peripheral surface, and first magnet steel in each side wall surface
End be located at the inside of the peak shape protrusion.
In rotor described in the utility model, 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 first end of the interior sidewall surface is connected in described
Wall surface, the both ends for connecting 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 described in the utility model, the outer side surface include the first surface for being connected to the outside wall surface,
The second curved surface for being connected to the connection wall surface and the connection plane between the first surface and the second curved surface, and institute
It is tangent with the first surface, the second curved surface respectively to state connection plane.
In rotor described in the utility model, the section of the first surface is made of the first conic section, and described
The center of first conic section is located at the outside of first magnetic slot；The section of second curved surface is by second secondary curve structure
At, and the center of the second secondary curve is located at the inside of first magnetic slot.
In rotor described in the utility model, first conic section is made of the first elliptical circular arc, and described
The length of first elliptical long axis is 1.5~1.7 times of the length of short axle, the first elliptical long axis and first magnet steel
Angle between the center line of slot is 20 °~25 °；The second secondary curve is made of the second elliptical circular arc, and described
The length of two elliptical long axis is 4~6 times of the length of short axle, in the second elliptical long axis and first magnetic slot
Angle between heart line is 60 °~65 °.
In rotor described in the utility model, the interior sidewall surface is made of plane, and in the interior sidewall surface with institute
Inner wall joint is stated with fin, and fixes the end of the first magnet steel by the fin；The connection wall surface respectively with institute
It states outer side surface and interior sidewall surface is tangent, and the section of the connection wall surface is made of the elliptical circular arc of third；The third is ellipse
Round center is located in first magnetic slot, and the length of the elliptical long axis of the third is the 1.3~1.6 of the length of short axle
Again, the angle between the elliptical long axis of the third and the center line of first magnetic slot is 50 °~55 °.
In rotor described in the utility model, each magnetic pole includes positioned at least the two of the rotor core periphery
A auxiliary tank, at least two auxiliary tank is symmetrical along the center line, and the depth of each auxiliary tank be 0.5~
1mm。
In rotor described in the utility model, the auxiliary tank includes that central axis is respectively parallel in the rotor core
The first arc surface, the second arc surface and the third arc surface of mandrel, second arc surface are connected to first arc surface
Between third arc surface, and the other side of first arc surface and third arc surface is connected respectively to the outer of rotor core
Week；The central axis of first arc surface and third arc surface is located at the center of interior, described second arc surface of the rotor core
Axle position is in outside the rotor core；The radius of first arc surface, the second arc surface and third arc surface be 0.8~
1.2mm。
In rotor described in the utility model, each magnetic pole includes two and is respectively used to the of the second magnet steel of installation
Two magnetic slots, and described two second magnetic slots are V-shaped symmetrical in the center line two sides；First magnetic slot and institute
It states and forms the first magnetic bridge between the periphery of rotor core, form between second magnetic slot and the periphery of the rotor core
Two magnetic bridges, the auxiliary tank is between first magnetic bridge and the second magnetic bridge.
In rotor described in the utility model, second magnetic slot includes the first V-arrangement side wall surface, the second V-arrangement side wall
Face, 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
First V-arrangement side wall surface, the second V-arrangement side wall surface are connected by inner end wall surface, so that second magnetic slot is closed as one
Emptying aperture.
In rotor described in the utility model, outer end wall bread upper wall surface containing slot, the first wall surface of slot side and slot side
Less than 5 °, first wall surface of slot side is connected to the tangential angle of second wall surface, the slot upper wall surface and the rotor core
Between the 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
Between wall surface.
In rotor described in the utility model, the two sides of the slot upper wall surface are using chamfering mode tangent outside bielliptic(al)
It is connected respectively to first wall surface of slot side and the second wall surface of slot side.
In rotor described in the utility model, the slot upper wall surface includes the 4th arc surface, and the 4th arc surface
Section and the rotor core periphery section constitution isocentric circular arc.
The utility model also provides a kind of magneto, including rotor as described above.
The utility model rotor and magneto are turned by increasing peak shape protrusion at the both ends of the first magnetic slot reducing
While sub- iron core leakage field, the mechanical stress at rotor first magnetic slot both ends in high-speed cruising can be reduced.
The utility model also passes through the second magnet steel that arrangement is V-arrangement and the first magnet steel that arrangement is I type, 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.
Detailed description of the invention
Fig. 1 is the schematic diagram of existing permanent magnetic electric machine rotor iron core；
Fig. 2 is the schematic diagram of the utility model rotor embodiment；
Fig. 3 is the schematic diagram of the embodiment of a magnetic pole of the utility model rotor；
Fig. 4 is the partial enlargement diagram in Fig. 3 at A；
Fig. 5 is the partial enlargement diagram in Fig. 3 at B；
Fig. 6 is structural stress schematic diagram of the utility model rotor 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 slot end；
Fig. 8 is Distribution of Magnetic Field schematic diagram of the utility model rotor in the first magnetic slot end；
Fig. 9 is Distribution of Magnetic Field schematic diagram of the existing rotor in I type magnetic slot end；
Figure 10 is line voltage harmonic contrast's schematic diagram of the utility model rotor Yu existing rotor；
Figure 11 is the partial enlargement diagram in Fig. 3 at C；
Figure 12 is Distribution of Magnetic Field schematic diagram of the utility model rotor 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 the utility model magneto.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
It as shown in figures 2-3, is the schematic diagram of the utility model rotor embodiment, which can be applied to magneto.This
Rotor in embodiment includes rotor core 3 (rotor core 3 can specifically be rushed folded form by silicon steel sheet), the rotor core 3 packet
Multiple circumferentially distributed magnetic poles are included, and each magnetic pole includes the first magnetic slot 31 for installing the first magnet steel (I type magnet steel) 4.
First magnetic slot 31 is axisymmetricly distributed by symmetry axis (central axis that O is rotor core 3) of center line Od, and above-mentioned center
Line Od is 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, inner wall 312 and two side walls face, wherein above-mentioned outside wall surface
311 and inner wall 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 inner wall 312.The outside wall surface 311 and inner wall 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 outer peripheral surface close to rotor core 3
Wall surface 312 is located at the side of the central axis 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 inner wall 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 first reduces to be gradually increased afterwards), 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 axis 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 outer peripheral surface of rotor core 3
Point) inside.
Above-mentioned rotor can be guaranteed 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 inner wall 312, connection
The both ends of wall surface 316 are connected respectively to the second end of outer side surface and the second end of interior sidewall surface 317；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 outer peripheral surface of the outer side surface and rotor core 3
Distance first reduce, after be gradually increased.
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 axis 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 axis 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 inner wall
Fin 318, and pass through the end that the fin 318 fixes the 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 axis 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 Yu 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 axis O 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 and connection plane 314 on outer side surface, 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 at this from concentrating on 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, be equally beneficial for will be close to outside wall surface 311 mechanical stress be dispersed in outer side surface with 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 outer 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, cooperates 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 axis in face 331, the second arc surface 332 and third arc surface 333 is respectively parallel to the central axis 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 axis section) center E4 and third arc surface 333 section (perpendicular to the section of the central axis 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 axis 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 guarantee that motor torque is defeated
Out.
As shown in figure 3, each magnetic pole further includes two the second magnetic for being respectively used to installation the second magnet steel (i.e. V-type magnet steel) 5
Steel tank 32, and this two the second magnetic slots 32 are V-shaped symmetrical in the two 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 position 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 axis 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, makes
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 outer end wall surface that the two offset movement will cause the second magnetic slot 32 bears 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 undoubtedly will increase the leakage field of motor.Meanwhile slot upper wall surface and the first wall of slot side
Face, which connects turning point with the second wall surface of slot side, can generate huge turnover mechanical stress.
The two 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, thus
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
A virtual line Q1Q2 can be connected as 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, the angle between the 4th elliptical long axis and virtual line Q1Q2 is between 5 ° to 7 °, and the 5th is ellipse
Angle between round and virtual line Q1Q2 is similarly between 5 ° to 7 °.By above structure, so that slot upper wall surface middle section
Periphery from rotor core 3 is equidistant, and the part extended along slot upper wall towards direction of both ends is from rotor core 3
The distance of periphery is slowly increased, 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 from focusing at the 4th curved surface 324 and the 5th curved surface 325.
Since conventional circular chamfering can make the slot upper wall surface stress of the second magnetic slot 32 concentrate on connection turning point, for drop
Mechanical stress at low outer end wall surface prevents its fracture 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. as intersection, not one is oval in another ellipse at two only one point of contacts of 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 the 6th elliptical a part, and the 6th
Elliptical center is E9, and the angle of the 6th transverse and virtual line segment Q1Q2 are the first wall surface of slot side between 80 ° to 85 °
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 the 7th elliptical a part, and the 7th elliptical center is E10, and long axis is with virtual line segment Q1Q2's
Angle is between 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 can also be by plane replacement).By above-mentioned chamfering mode, on the one hand make slot upper wall surface length 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), so that connection turning point be prevented to be broken in the high revolving speed of motor due to huge mechanical stress.Simultaneously as should
Place's mechanical stress is effectively reduced, and the thickness of the second magnetic bridge can effectively reduce, to reduce the leakage field at this, such as Figure 12,13
Comparison.
The utility model also provides a kind of magneto, which can reduce rotor high-speed cruising mechanical stress and mention
Rise electromagnetic performance.The magneto includes casing, rotor as shown in Figure 2 and stator 6 as shown in figure 15, above-mentioned rotor and
Stator 6 is installed in casing, and has air gap (thickness of air gap and the function of motor between the inner wall of rotor outer wall and stator 6
Magnetic steel material selected by the first magnet steel 4, the second magnet steel 5 in rate grade, rotor core 3 and the processing of stator 6 and assembler
Skill is related).Above-mentioned magneto is made of 8 pole, 48 slot Double Layer Winding, certainly, in practical applications, the magnetic pole and stator of rotor
The quantity of slot can select according to actual needs.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (14)
1. a kind of rotor, including rotor core, the rotor core includes multiple circumferentially distributed magnetic poles, and each magnetic pole includes
For installing the first magnetic slot of 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, inner wall and two side walls face,
Wherein: the outside wall surface and inner wall 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 inner wall；Have in each side wall surface and is convex to
The peak shape protrusion of the rotor core outer peripheral surface, and the end of first magnet steel is located at the inside of the 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
The second end and the interior sidewall surface of the outer side surface are connected respectively to the both ends of the inner wall, 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
Stating the angle between the center line of the first magnetic slot is 20 °~25 °；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 inner sidewall
There is fin with the inner wall 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 axis 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 axis of first arc surface and third arc surface is located in the rotor core, second arc surface
Central axis 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 includes two and is respectively used to installation second
Second magnetic slot of magnet steel, and described two second magnetic slots are V-shaped symmetrical in the center line two 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 two 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 of the periphery in the section and rotor core of the 4th arc surface.
14. a kind of magneto, which is characterized in that including rotor such as of any of claims 1-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820982910.8U CN208316443U (en) | 2018-06-25 | 2018-06-25 | Rotor and magneto |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820982910.8U CN208316443U (en) | 2018-06-25 | 2018-06-25 | Rotor and magneto |
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| CN208316443U true CN208316443U (en) | 2019-01-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711977A (en) * | 2018-06-25 | 2018-10-26 | 苏州汇川联合动力系统有限公司 | Rotor and magneto |
| CN112436629A (en) * | 2019-08-26 | 2021-03-02 | 安徽美芝精密制造有限公司 | Rotor, motor, compressor and refrigeration plant |
| CN112968580A (en) * | 2021-02-03 | 2021-06-15 | 大连理工大学 | Rotor structure of built-in permanent magnet synchronous motor and design method |
| DE102020115286A1 (en) | 2020-06-09 | 2021-12-09 | Schaeffler Technologies AG & Co. KG | Electric motor with pockets for holding magnets |
| WO2023124152A1 (en) * | 2021-12-27 | 2023-07-06 | 华为数字能源技术有限公司 | Rotor core, rotor, motor, motor driving system and electric vehicle |
-
2018
- 2018-06-25 CN CN201820982910.8U patent/CN208316443U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711977A (en) * | 2018-06-25 | 2018-10-26 | 苏州汇川联合动力系统有限公司 | Rotor and magneto |
| CN112436629A (en) * | 2019-08-26 | 2021-03-02 | 安徽美芝精密制造有限公司 | Rotor, motor, compressor and refrigeration plant |
| DE102020115286A1 (en) | 2020-06-09 | 2021-12-09 | Schaeffler Technologies AG & Co. KG | Electric motor with pockets for holding magnets |
| CN112968580A (en) * | 2021-02-03 | 2021-06-15 | 大连理工大学 | Rotor structure of built-in permanent magnet synchronous motor and design method |
| WO2023124152A1 (en) * | 2021-12-27 | 2023-07-06 | 华为数字能源技术有限公司 | Rotor core, rotor, motor, motor driving system and electric vehicle |
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Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |
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