CN206211696U - The rotor of motor, motor and vehicle - Google Patents
The rotor of motor, motor and vehicle Download PDFInfo
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- CN206211696U CN206211696U CN201621035411.5U CN201621035411U CN206211696U CN 206211696 U CN206211696 U CN 206211696U CN 201621035411 U CN201621035411 U CN 201621035411U CN 206211696 U CN206211696 U CN 206211696U
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Abstract
The utility model discloses a kind of rotor of motor, motor and vehicle.Motor includes stator and rotor.The rotor can include iron core；Arranged from outside to inside in the iron core generally along unshakable in one's determination the first tangential magnet, the second magnet and the 3rd magnet；Two magnets of wherein described second magnet pair form the first magnet angle each other, and two magnets of the 3rd magnet pair form the second magnet angle each other, and the second magnet angle is less than the first magnet angle, and the first magnet angle is less than 180 degree.
Description
Technical field
This disclosure relates to vehicle, particularly the motor in vehicle, relates more particularly to for the motor in vehicle
Rotor.
Background technology
In the world today, vehicle has become people's work and the essential vehicles of living.Due to oil money
Consideration in terms of the increasingly nervous and environmental protection in source, pure electric vehicle and motor vehicle driven by mixed power increasingly cause people's
Note.There is the demand of each side being improved to the motor used in pure electric vehicle and motor vehicle driven by mixed power.
Utility model content
The disclosure aims to solve the problem that at least one problem present in prior art.
According to one embodiment of the disclosure, there is provided a kind of rotor of motor, it is characterised in that including：It is unshakable in one's determination；Institute
State arrange from outside to inside in iron core generally along the first tangential magnet unshakable in one's determination, the second magnet pair and the 3rd magnet pair；Wherein
Two magnets of second magnet pair form the first magnet angle each other, and two magnets of the 3rd magnet pair form each other
Two magnet angles, the second magnet angle is less than the first magnet angle, and the first magnet angle is less than 180 °.
According to another embodiment of the disclosure, two outermost side ends of the first magnet are formed with the line at center unshakable in one's determination
First angle, two outermost side ends of the second magnet pair form the second angle, and the 3rd magnet with the line at center unshakable in one's determination
To two outermost side ends form the 3rd angle with the line at center unshakable in one's determination, first angle is less than second angle,
Second angle is less than the 3rd angle.
According to another embodiment of the disclosure, the scope of first angle is for about 10 °-about 13 °, second angle
Scope be for about 20 °-about 25 °, and the scope of the 3rd angle is for about 30 °-about 36 °.
According to another embodiment of the disclosure, the scope at the second magnet angle is for about 150 °-about 165 °, described first
The scope at magnet angle is for about 160 °-about 175 °.
According to another embodiment of the disclosure, there is the first gap between a pair of magnets of second magnet, it is described
There is the second gap, first gap is less than the second gap between a pair of magnets of 3rd magnet.
According to another embodiment of the disclosure, the length range in the first gap is for about 0.8- about 1.4mm, the second gap
Length range is for about 1.0- about 1.6mm.
According to one embodiment of the disclosure, there is provided a kind of motor, it is characterised in that including：Stator；According to above-mentioned
Rotor.
According to one embodiment of the disclosure, there is provided a kind of vehicle, it is characterised in that including：Motor, the motor bag
Include：Stator and according to above-mentioned rotor.
Technical scheme based on the above achieves beneficial technique effect.
Brief description of the drawings
Fig. 1 shows the schematic side elevation of vehicle in accordance with an embodiment of the present disclosure；
Fig. 2 shows the schematic diagram of the motor including stator and rotor in accordance with an embodiment of the present disclosure；
Fig. 3 show in accordance with an embodiment of the present disclosure to be circumferentially arranged in iron core be one group with two magnet slots
The schematic diagram of multigroup magnet slot；
Fig. 4 show in accordance with an embodiment of the present disclosure, radially arranged in one group of magnet slot of Fig. 3 two magnet slots
Enlarged drawing；
Fig. 5 show in accordance with an embodiment of the present disclosure to be circumferentially arranged in iron core be one group with three magnet slots
The schematic diagram of multigroup magnet slot；
Fig. 6 show in accordance with an embodiment of the present disclosure, radially arranged in one group of magnet slot of Fig. 5 three magnet slots
Enlarged drawing；
Fig. 7 show in accordance with an embodiment of the present disclosure, radially arranged in one group of magnet slot three magnet slots it is another
The enlarged drawing of one example；
Fig. 8 show in accordance with an embodiment of the present disclosure, radially arranged in one group of magnet slot two magnet slots show
Example；
Fig. 9 show in accordance with an embodiment of the present disclosure, radially arranged in one group of magnet slot of Fig. 8 two magnet slots
Enlarged drawing；
Figure 10 show in accordance with an embodiment of the present disclosure, be arranged in magnet slot in magnet two outermost side ends with
Angle and the schematic diagram at the magnet angle of magnet pair that the line at center unshakable in one's determination is formed；
Figure 11 shows the coordinate system transformation and dq shaft model current phasor figures of permagnetic synchronous motor；
Figure 12 shows the relation between reluctance torque and magnet thickness；
Figure 13 shows that the magnetic potential produced by each magnet is superimposed the schematic diagram to form sinusoidal waveform；
Figure 14 shows the corresponding air gap flux density of angle displacement of different air gap center lines；
Figure 15 shows the relation between air gap flux density and air gap flux density harmonic order.
Specific embodiment
Describe the various exemplary embodiments of the disclosure in detail below with reference to the accompanying drawings.It is to be understood that, to various realities
The description for applying example is merely illustrative, not as any limitation of technology of this disclosure.Unless specifically stated otherwise, showing
Component and the positioned opposite of step, expression formula and numerical value in example property embodiment do not limit the scope of the present disclosure.
Term used herein, it is only for description specific embodiment, and it is not intended to limit the disclosure.Unless on
Hereafter clearly it is further noted that " one " and " being somebody's turn to do " of singulative used herein is intended to equally include plural form.Also
Understand, the word of "comprising" one as used herein, illustrate presence pointed by feature, entirety, step, operation, unit and/
Or component, but it is not excluded that in the presence of or increase one or more of the other feature, entirety, step, operation, unit and/or component
And/or combinations thereof.Those skilled in the art are to be further understood that term " about " used herein is intended to explanation
Because possible measurement error or foozle cause that described numerical value covers certain rational change range.
With reference now to Fig. 1, Fig. 1 shows the schematic side elevation of vehicle in accordance with an embodiment of the present disclosure.Normally, car
10 can include vehicle body 12, multiple wheels 14 and automotive power 16 that be supported on vehicle body 12 on tread etc..Should
Automotive power 16 can include at least one motor.
It should be understood that automotive power used herein can widely include the tool that can be used in promoting vehicle
There is any automotive power of one or more motors.The automotive power can be used for such as pure electric vehicle and mix
Close power car.In the dynamical system of motor vehicle driven by mixed power, at least one motor can be pushed away serially or parallelly with engine
The traveling of motor-car.The example of motor vehicle driven by mixed power can include but is not limited to plug-in hybrid vehicle, double mode mixing
Power car, full motor vehicle driven by mixed power, extended-range motor vehicle driven by mixed power, power-assisted motor vehicle driven by mixed power, light hybrid
Vehicle, serial mixed power vehicle, parallel hybrid vehicles, series-parallel motor vehicle driven by mixed power, fluid power mixing are dynamic
The motor vehicle driven by mixed power of power vehicle, power dividing type motor vehicle driven by mixed power, BAS hybrid vehicle and any other type.
Vehicle in the disclosure can be configured as car, sports type car, truck, bus, transboundary commercial car, car, recreation vehicle etc..
It should be understood that the technology of the disclosure can be used for any of the above described automotive power, and it is not limited to a certain particular type.
As shown in figure 1, in certain embodiments, automotive power 16 can generally include power supply 24, inverter 20, control
Unit processed 18, motor 22 and input unit 26.As described above, automotive power 16 can be arranged and/or matched somebody with somebody using other
Put, but normally include at least one motor.In certain embodiments, motor 22 is operatively connected at least one wheel
14, apply torque so as to drive vehicle 10 to wheel 14.
Power supply 24 can directly or indirectly provide power to motor 22.Power supply 24, such as battery, can include one
Or multiple battery units, and can be using lithium ion, nickel metal hydride, sodium nickel chloride, NI-G and any suitable its
His battery technology.
Inverter 20 operably interconnects power supply 24 and motor 22.Inverter 20 can receive direct current from power supply 24
Electricity, is converted into alternating current, and alternating current is passed into motor 22.
Control unit 18 is operatively connected to inverter 20, so as to control inverter 20.Control unit 18 can be
One or more general digital computers or data processing equipment, can generally include but is not limited to processor or microprocessor
Or CPU, memory (such as, but not limited to read-only storage, random access memory, electrically erasable only
Read memory), input/output device or device, analog-digital converter or change-over circuit, digital analog converter or conversion electricity
Road, clock etc..Control unit 18 can be configured as execute program instructions, and the programmed instruction can be stored in control unit 18
Memory or other other appropriate storage devices being associated with control unit 18 in.Control unit 18 can be via inversion
Device 20 is controlled to motor.
In certain embodiments, vehicle 10 can also include input unit 26, and input unit 26 is operatively connected to
Control unit 18.Driver's operation input unit 26 of vehicle, so that the output for carrying out controlled motor 22 via control unit 18 turns
Square.In certain embodiments, input unit 26 selectively includes pedal, and control unit 18 is passed through in response to the location status of pedal
The size of the electric power of motor 22 is delivered to by inverter regulation, so that the output torque of regulation motor 22.
Fig. 2 shows the schematic diagram of the motor 22 including stator and rotor in accordance with an embodiment of the present disclosure.This area skill
Art personnel it will be appreciated that though disclosure below combination permagnetic synchronous motor describes multiple embodiments of the disclosure, but this
It is not intended to for the essence and spirit of the disclosure each embodiment to be restricted to specific motor type.According to the reality that the disclosure is recorded
Example is applied, the spirit and essence of wherein each embodiment reasonably can be expanded to other motors by those skilled in the art.
Specifically, as shown in Fig. 2 motor 22 can generally include rotor portion and stationary part, stationary part can be with position
In the outside of rotor portion, wherein stationary part can include stator core 202 and stator coil 200.Stator coil 200 can be with
It is uniformly distributed in around rotor periphery, stator coil 200 can be formed using coilings such as flat type copper wires.Rotor portion can be wrapped
Include rotor core 204, magnet slot 206 and the rotating shaft 208 positioned at rotor center position.Rotor portion also includes being inserted into magnet
Magnet in groove 206.Wherein magnet can use various permanent-magnet materials, can include but is not limited to aluminium nickel cobalt (AlNiCo), iron
Oxysome, Rare-Earth Cobalt, neodymium iron boron and binding electromagnetic material etc..In the design can according to the size to air-gap field, regulation
The various factors such as facility, financial cost of motor performance index, the stability of magnetic property, mechanical performance, processing and assembling will
Ask and permanent-magnet material is selected.
Architectural feature below for magnet slot is described.
According to some embodiments of the present disclosure, rotor can include rotor core and magnet slot, and the magnet slot can include
Center section and Outboard Sections, generally being arranged on tangentially in rotor core along rotor core, the wherein outside of the magnet slot
Partial thickness can be more than the thickness of center section.Specifically, according to some embodiments of the present disclosure, as shown in Fig. 2 rotor
Unshakable in one's determination 204 can be included and along multigroup magnet slot that rotor circumference is uniform or nonuniform mutation operator is in unshakable in one's determination 204.In an implementation
In example, magnet slot is generally along the arranged tangential of iron core 204.Every group of magnet slot can include one or more magnet slots (in Fig. 2
Illustrate only one), magnet slot 206 can include center section 212 (shown in phantom) and positioned at the outside of center section 212
Outboard Sections 210.Although showing that Outboard Sections 210 are located at the both sides of center section 212 in accompanying drawing 2, however, the disclosure is not
This is only limitted to, Outboard Sections 210 can be located only within the side of center section 212.Magnet can be arranged in the pars intermedia of rotor
Divide in 212 (can insert or be embedded into magnet slot by magnet by various connected modes such as bonding agent, draw-in groove, fastener).Magnetic
Body groove 206 can using it is various other can realize the structure and shape of the function that rotor is played in motor, can including but
It is not limited to U-shaped, the L-shaped of separate form, in-line, V-arrangement of integral form etc..
According to one embodiment of the disclosure, the thickness of Outboard Sections 210 can be more than the thickness of the center section 212.
As it was noted above, the center section 212 of magnet slot will accommodate magnet, thus, Outboard Sections 210 will accommodate air.In motor fortune
When turning, above-mentioned arrangement can play a part of to increase reluctance torque, and then increase output torque.On the other hand, due to outside portion
What is accommodated in points 210 is air, therefore the thickness of increase Outboard Sections 210 can't extraly increase the consumption of magnet.That is,
Above-described embodiment according to the disclosure can't increase the manufacturing cost of motor while motor performance is increased, and more empty
Air drain can reduce the quality of iron core, further improve power/torque mass density.
As it was noted above, according to some embodiments of the present disclosure, every group of magnet slot can include one or more magnet slots.
Fig. 3 show in accordance with an embodiment of the present disclosure be circumferentially arranged in iron core with multigroup magnet that two magnet slots are one group
The schematic diagram of groove.Specifically, as shown in figure 3, multigroup magnet slot is circumferentially arranged in rotor core 300 respectively.Every group of magnetic
Body groove can include the first magnet slot 302 and the second magnet slot 304.In one embodiment, the second magnet slot 304 for example can be with
Relative to the inner side that the first magnet slot 302 is arranged in rotor core 300.In one embodiment, the first magnet slot 302 and second
Magnet slot 304 can have the substantially the same axis of symmetry, and the axis of symmetry can generally along the radial direction of rotor core 300
Direction, as shown in the vertical dotted line in Fig. 5.Wherein, the first magnet slot 302 can include the first corresponding Outboard Sections
306 and first center section 308, and the second magnet slot 304 can include in the middle of the second corresponding Outboard Sections 310 and second
Part 312.Although it will be appreciated by those skilled in the art that showing the first Outboard Sections 306 and the second Outboard Sections in Fig. 3
310 both sides for being located at the first center section 308 and the second center section 312 respectively, but during Outboard Sections can also be only located at
Between part side (not shown).As long as it was noted above, thickness of the thickness of Outboard Sections more than center section, it is possible to rise
To the effect for increasing reluctance torque in the case where magnet steel consumption and cost is not increased.As illustrated, two magnet slots and rotor
Can have every magnetic magnetic bridge 320 and 322 respectively between outer rim.In addition, the dash area in figure is represented is arranged in the first pars intermedia
Points 308 and the second magnet in center section 312.
Fig. 4 show in accordance with an embodiment of the present disclosure, radially arranged in one group of magnet slot of Fig. 3 two magnet slots
Enlarged drawing.As illustrated, the thickness of the first Outboard Sections 306 can be represented with width1, the thickness of the first center section 308
Can be represented with mh1, similarly, the thickness of the second Outboard Sections 310 can be represented with width2, the second center section 312
Thickness can be represented with mh2.According to some embodiments of the present disclosure, the thickness of the corresponding Outboard Sections 306 of the first magnet slot 302
The thickness of center section 308 can be more than, i.e. width1 can be more than mh1；And/or the corresponding outside portion of the second magnet slot 304
Dividing 310 thickness can be more than mh2 more than the thickness of center section 312, i.e. width2.As it was noted above, by so
Configuration, can play increase reluctance torque so that increase motor output torque effect, further improve power/torque matter
Metric density.
According to some embodiments, in the case where the diameter of the rotor of motor is 140mm, the scope of width1 and width2
Can be about 2.8- about 3.8mm.Mh1's and mh2 can range from about 2.4- about 3.4mm.It is in the diameter of the rotor of motor
In the case of 170mm, width1's and width2 can range from about 3.4- about 4.7mm.Mh1's and mh2 can range from about
2.9- about 4.2mm.What above-mentioned number range was merely exemplary, those skilled in the art can select other according to concrete application
Suitable numerical value.
In addition, being directed to the first magnet slot and the second magnet slot, can realize that rotor is played in motor using various
Function structure and shape, can include but is not limited to U-shaped, the L-shaped of separate form, in-line, V-arrangement of integral form etc. with
And any combination of them.For clarity rather than the purpose of limitation, the magnet slot using L-shaped or U-shaped is used as showing here
Example.Specifically, as shown in figure 3, according to some embodiments of the present disclosure, the first magnet slot 302 is U-shaped magnet slot, the second magnet
Groove 304 can include a pair of L-shaped magnet slot, and this pair of magnet slot can be arranged symmetrically, and can form space in the middle of both
314.Each magnet slot in this pair of magnet slot can include corresponding Outboard Sections and the adjacency section adjacent with the Outboard Sections
Point, for example, Outboard Sections 310 and adjacent part 316 in figure, described Outboard Sections and adjacent part generally form L-shaped,
Each corresponding adjacent part 316 in a pair of magnets groove described here is constituted in the second magnet slot described above
Between part 312, wherein the thickness of Outboard Sections 310 more than adjacent part 316 thickness.In addition, the magnet slot of L-shaped can have
Away from the opening of rotor center.In other embodiments, it will be understood by those skilled in the art that the magnet slot of the L-shaped can also
With the opening towards other directions.
Other embodiment according to the disclosure, the first magnet slot and the second magnet slot may each comprise middle in the presence of empty
A pair of L-shaped magnet slot of gap.According to other embodiments, the first magnet slot and the second magnet slot may each be U-shaped magnet slot.Root
According to other embodiments, the first magnet slot can include that above-mentioned centre has a pair of L-shaped magnet slot in space, and the second magnetic
Body groove can be U-shaped magnet slot.
Further, Fig. 5 show in accordance with an embodiment of the present disclosure be circumferentially arranged in iron core with three magnetic
Body groove is the schematic diagram of one group of multigroup magnet slot.Rotor shown in Fig. 5 can be including the first magnet slot 502, relative to first
Magnet slot 502 is arranged in the second magnet slot 504 of the inner side of rotor core 500 and is arranged in relative to the second magnet slot 504 and turns
3rd magnet slot 506 of sub 500 inner side unshakable in one's determination.First magnet slot 502, the second magnet slot 504 and the 3rd magnet slot 506 can be with
With the substantially the same axis of symmetry radially, as shown in dotted line vertical in Fig. 5.Wherein, the first magnet slot 502
Corresponding Outboard Sections 510 and center section 512 can be included, the second magnet slot 504 can include corresponding Outboard Sections 514
With center section 516, the 3rd magnet slot 506 can include corresponding Outboard Sections 518 and center section 520.The rotor may be used also
Including the magnet being arranged in the center section of the first magnet slot 502, the second magnet slot 504 and the 3rd magnet slot 506, such as to scheme
(magnet can be inserted or be embedded into magnetic by various connected modes such as bonding agent, draw-in groove, fastener shown in 5 dash area
In body groove).
Fig. 6 show in accordance with an embodiment of the present disclosure, radially arranged in one group of magnet slot of Fig. 5 three magnet slots
Enlarged drawing.As shown in fig. 6, the thickness of the Outboard Sections 510 of the first magnet slot 502 can be represented with width1, the first magnet
The thickness of the center section 512 of groove 502 can represent with mh1, similarly, the thickness of the Outboard Sections 514 of the second magnet slot 504
Can be represented with width2, the thickness of the center section 516 of the second magnet slot 504 can be represented with mh2；3rd magnet slot 506
The thickness of Outboard Sections 518 can represent that the thickness of the center section 520 of the 3rd magnet slot 506 can use mh3 with width3
Represent.According to some embodiments of the present disclosure, the thickness of the corresponding Outboard Sections 510 of the first magnet slot 502 can be more than centre
The thickness of part 512, i.e. width1 can be more than mh1；And/or the thickness of the corresponding Outboard Sections 514 of the second magnet slot 504 can
Mh2 is more than with the thickness more than center section 516, i.e. width2；And/or the corresponding Outboard Sections 518 of the 3rd magnet slot 506
Thickness can be more than the thickness of center section 520, i.e. width3 can be more than mh3.
According to some embodiments of the present disclosure, as shown in figure 5, the first magnet slot can be U-shaped magnet slot, the second magnet slot
Can include that centre has two magnet slots of generally L-shaped in gap with the 3rd magnet slot.Herein to the implementation shown in Fig. 5
The description that example is carried out is solely for the purpose of illustration, as it was noted above, in certain embodiments, the first magnet slot, the second magnetic
Body groove and the 3rd magnet slot can be selected as one of L-shaped of U-shaped and separate form.Those skilled in the art will also be understood that
For the first magnet slot, the second magnet slot and the 3rd magnet slot, can realize what rotor was played in motor using various
The other structures and shape of function, can include but is not limited to in-line, V-arrangement etc. and any combination of them.
The structure of the rotor according to the disclosure is further illustrated below.Generally can be with cloth on the stator of permagnetic synchronous motor
Three-phase symmetric winding is equipped with, excitation can be provided on rotor including magnet, can be by air-gap field between stator and rotor
Generation electromagnetic coupled relation, so as to carry out the conversion between mechanical energy and electric energy.Usually, for easy analysis, can be by forever
Model conversion of the magnetic-synchro motor under three-phase static coordinate system is the model under rotor synchronous rotary dq coordinate systems.Figure 11 shows
Between permagnetic synchronous motor three-phase static coordinate system, stator two-phase α β rest frames and rotor synchronous rotary dq coordinate systems
Relation.As shown in figure 11, I is stator current resultant vector, idAnd iqD axles equivalent current and q axle equivalent currents are represented respectively.Its
In in stator two-phase rest frame, α axles overlap with the A phase axis of three-phase static coordinate system, β axles 90 degree of electricity of advanced α axis
Angle.In rotor synchronous rotary dq coordinate systems, the N poles central axis in the magnetic field that rotor is produced, will be super used as d-axis (d axles)
90 degree of positions of electrical angle of preceding d-axis are used as quadrature axis (q axles).Normally, first the equation under three-phase static coordinate system can be passed through
Clarke conversion obtains the equation under α β two-phase rest frames, then converts the equation obtained under dq coordinate systems by Park.
It can be seen from figure 11 that Ea is the counter electromotive force of motor, the direction of Ea is identical with q direction of principal axis, and ψ is the magnetic linkage of magnet, the direction of ψ
It is identical with d direction of principal axis.
By entering line translation, the equivalent voltage U of d axles and q axles can be obtaineddAnd Uq, as shown in Equation 1.
Ud=Rid+Ldi’d-ωLqiq
Uq=Riq+Lqi’q+ω(Ldid+ψ) (1)
Wherein, ω is the rotation angular rate of rotor, LdAnd LqIt is respectively d axles and q axle inductances, R is the phase electricity of every phase winding
Resistance, i 'dAnd i 'qIt is respectively idAnd iqTime-derivative.
And then using the 3/2 conversion principle for keeping amplitude constant, the electromagnetic power P of permagnetic synchronous motor can be obtainedc, such as
Shown in formula 2.
Pc=3/2 (Udid+Uqiq[the ω ψ i of)=3/2q+ω(Ld-Lq)idiq] (2)
The electromagnetic torque of permagnetic synchronous motor is the result be divided by with mechanical angular speed of electromagnetic power of motor, therefore can be with
Output torque Ts of the three-phase p to the internal permanent magnet synchronous motor of pole under dq coordinate systems is obtained, output torque T can be by two
It is grouped into, a part is permanent-magnet torque 3/2p ψ iq, another part is reluctance torque 3/2p (Ld-Lq)idiq。
T=3/2p ψ iq+3/2p(Ld-Lq)idiq (3)
Embodiment according to Fig. 2-Fig. 5, by causing that the thickness of Outboard Sections of magnet slot is more than center section
Thickness, d axle magnetic resistance is increased.Due to can approx think d axles magnetic resistance and d axle inductances LdIt is inversely proportional, therefore d axle inductances LdSubtract
It is small.L can be caused in the case of the change less of q axle inductancesdAnd LqDifference increase, and then cause reluctance torque T increase.Enter
One step ground, due to it is increased be the thickness of the air-gap in magnet slot, therefore without increase magnet consumption in the case of increase
The output torque of motor.
It is described below for the feature every magnetic magnetic bridge formed between rotor periphery and magnet slot.In the design of motor
In, cause magnet material utilization rate too low to not make the magnetic leakage factor of the magnet in motor excessive, generally using certain
Every magnetic measure, for example, being set between magnet slot and rotor periphery every magnetic magnetic bridge, as shown in the reference 214 in Fig. 2.It is logical
Cross the magnetic flux every magnetic magnetic bridge part is reached saturation play a part of limit leakage field.It is smaller every the width of magnetic magnetic bridge, this part
Magnetic resistance will be bigger, can more limit leakage magnetic flux.
According to some embodiments of the present disclosure, rotor is included at least two magnet slots arranged in rotor core, including
First magnet slot and the second magnet slot on the inside of iron core is arranged in relative to the first magnet slot, wherein an end of the first magnet slot
Have first between end and the outer rim of rotor every magnetic magnetic bridge, the second magnet slot closes on first every the end of magnetic magnetic bridge and rotor
Have second between outer rim every magnetic magnetic bridge, first every magnetic magnetic bridge width less than second every the width of magnetic magnetic bridge.
Specifically, according to some embodiments of the present disclosure, as shown in figure 3, multigroup magnet slot can be circumferentially uniform or non-
It is evenly arranged in rotor core 300, for every group of magnet slot, the first magnet slot 302 and the second magnet slot 304 can be included,
Second magnet slot 304 can be arranged in the inner side of rotor core 300 relative to the first magnet slot 302.In one embodiment,
One magnet slot 302 and the second magnet slot 304 can have substantially the same symmetry axis radially, and such as Fig. 3's is vertical
Dotted line shown in.In addition, rotor can also include the magnet being arranged in magnet slot, as shown in the dash area in figure.As schemed
Shown, the first magnet slot 302 can form first every magnetic magnetic bridge between the end of symmetry axis side and the outer rim of rotor
320, and neighbouring the first of the second magnet slot 304 can form second every magnetic between the end of magnetic magnetic bridge 320 and rotor periphery
Magnetic bridge 322.In accordance with an embodiment of the present disclosure, first every magnetic magnetic bridge 320 width less than second every magnetic magnetic bridge 322 width.It is logical
Such arrangement is crossed, can more effectively be utilized every magnetic magnetic bridge come the effect of meeting with stresses, so as to improve mechanical stability and increase
Big mechanical strength, for balancing the contradiction of leakage field and rotor mechanical strength.
As shown in the Fig. 4 as enlarged drawing, first represents that second every magnetic magnetic bridge 322 with L31 every the width of magnetic magnetic bridge 320
Width represented with L32, wherein first every magnetic magnetic bridge 320 width can be less than second every magnetic magnetic bridge 322 width, i.e. L31
Less than L32.
Alternatively, or in addition, as shown in figure 3, according to some embodiments of the present disclosure, the first magnet slot 302 positioned at right
Claim to have between the end of axle opposite side and the outer rim of rotor the 4th every magnetic magnetic bridge 324, neighbouring the of the second magnet slot 304
Four can have the 5th every magnetic magnetic bridge 326 between the end of magnetic magnetic bridge 324 and the outer rim of rotor.According to the implementation of the disclosure
Example, the 4th every magnetic magnetic bridge 324 width less than the 5th every magnetic magnetic bridge 326 width.
As shown in the Fig. 4 as enlarged drawing, the 4th can represent that the 5th every magnetic magnetic bridge every the width of magnetic magnetic bridge 324 with L33
326 width can represent with L34, and the 4th every magnetic magnetic bridge 324 width less than the 5th every the width of magnetic magnetic bridge 326, i.e.,
L33 is less than L34.Further, according to some embodiments of the present disclosure, as shown in figure 5, rotor can include the first magnet slot
502nd, it is arranged in the second magnet slot 504 of the inner side of rotor core 500 and relative to the second magnet relative to the first magnet slot 502
Groove 504 is arranged in the 3rd magnet slot 506 of the inner side of rotor core 500.In one embodiment, the first magnet slot 502, the second magnetic
The magnet slot 506 of body groove 504 and the 3rd can have substantially the same symmetry axis radially, the vertical void in such as Fig. 5
Shown in line.Wherein, the first magnet slot 502 can form first between the end of the symmetry axis side and the outer rim of rotor
Every magnetic magnetic bridge 526, neighbouring the first of the second magnet slot 504 can form the between the end of magnetic magnetic bridge 526 and rotor periphery
Two every magnetic magnetic bridge 528, and neighbouring the second of the 3rd magnet slot 506 can have between the end of magnetic magnetic bridge 528 and rotor periphery
Have the 3rd every magnetic magnetic bridge 530.First every magnetic magnetic bridge 526 width less than second every the width of magnetic magnetic bridge 528, and second every magnetic
The width of magnetic bridge 528 is less than the 3rd every the width of magnetic magnetic bridge 530.
As shown in the Fig. 6 as enlarged drawing, first can represent that second every magnetic magnetic bridge every the width of magnetic magnetic bridge 526 with L51
528 width can be represented with L52, and the 3rd can be represented every the width of magnetic magnetic bridge 530 with L53.Wherein first every magnetic magnetic bridge 526
Width less than second every magnetic magnetic bridge 528 width, i.e. L51 be less than L52.In addition, second every magnetic magnetic bridge 528 width less than the
Three every magnetic magnetic bridge 530 width, i.e. L52 can be less than L53.
In addition, according to some embodiments of the present disclosure, as shown in figure 3, the first magnet slot can be U-shaped magnet slot, second
Magnet slot can include that centre has two magnet slots of generally L-shaped in gap, is carried out to the embodiment shown in Fig. 3 herein
Description be solely for the purpose of illustration.For the first magnet slot, the second magnet slot, can using it is various other can realize
The structure and shape of the function that rotor is played in motor, can include but is not limited to U-shaped, the L of separate form of integral form
Shape, in-line, V-arrangement etc. and any combination of them.
Alternatively, or in addition, go to Fig. 5 and Fig. 6, the end positioned at symmetry axis opposite side of the first magnet slot 502 with turn
The 4th can be formed between the outer rim of son every magnetic magnetic bridge 532, the second magnet slot 504 it is neighbouring every the end of magnetic magnetic bridge 532 with turn
The 5th can be formed every magnetic magnetic bridge 534 between the outer rim of son, and the 5th can be adjacent to the 4th every the cloth of magnetic magnetic bridge 532 every magnetic magnetic bridge 534
Put, and the 4th every magnetic magnetic bridge 532 width can be less than the 5th every magnetic magnetic bridge 534 width.In addition, the 3rd magnet slot 506
It is neighbouring the 6th can be formed between the end of magnetic magnetic bridge 534 and the outer rim of rotor every magnetic magnetic bridge 536, the 6th every magnetic magnetic bridge
536 the neighbouring 5th can arrange every magnetic magnetic bridge 534, wherein the 5th can be less than the 6th every magnetic magnetic bridge every the width of magnetic magnetic bridge 534
536 width.
As shown in the Fig. 6 as enlarged drawing, the 4th can represent that the 5th every magnetic magnetic bridge every the width of magnetic magnetic bridge 532 with L54
534 width can be represented with L55, and the 6th can be represented every the width of magnetic magnetic bridge 536 with L56.Wherein the 4th every magnetic magnetic bridge 532
Width can be less than the 5th every magnetic magnetic bridge 534 width, i.e. L54 can be less than L55.In addition, the 5th every magnetic magnetic bridge 534 width
Degree can be less than the 6th every the width of magnetic magnetic bridge 536, i.e. L55 can be less than L56.
According to some embodiments of the present disclosure, as shown in figure 5, in actual rotor manufacture, first every magnetic magnetic bridge 526
Width range can be about 0.8- about 1.4mm, and second can be about 1.0- about 1.6mm every the width range of magnetic magnetic bridge 528, and
3rd can be about 1.2- about 1.8mm every the width range of magnetic magnetic bridge 530.Similarly, the 4th every magnetic magnetic bridge 532 width range
Can be about 0.8- about 1.4mm, the 5th can be about 1.0- about 1.6mm every the width range of magnetic magnetic bridge 534, and the 6th every magnetic
The width range of magnetic bridge 536 can be about 1.2- about 1.8mm.What above-mentioned number range was merely exemplary, people in the art
Member can select other suitable numerical value according to concrete application.
According to some embodiments of the present disclosure, as shown in figure 5, the first magnet slot can be U-shaped magnet slot, the second magnet slot
Can include that centre has two magnet slots of generally L-shaped in gap with the 3rd magnet slot, herein to the implementation shown in Fig. 5
The description that example is carried out is solely for the purpose of illustration.For the first magnet slot, the second magnet slot and the 3rd magnet slot, can adopt
With it is various other can realize the structure and shape of the function that rotor is played in motor, integral form can be included but is not limited to
U-shaped, the L-shaped of separate form, in-line, V-arrangement etc. and any combination of them.
In addition, the magnet slot of U-shaped can have away from the opening of rotor center, it will be appreciated by those skilled in the art that herein
Opening direction is only schematical, and the magnet slot of the U-shaped can also have the opening towards other directions.The magnet slot of L-shaped can
With with away from the opening of rotor center, it will be appreciated by those skilled in the art that opening direction herein is only schematical, the L-shaped
Magnet slot can also have towards other directions opening.
Fig. 7 show in accordance with an embodiment of the present disclosure, radially arranged in one group of magnet slot three magnet slots it is another
The enlarged drawing of one example.According to some embodiments of the present disclosure, as shown in fig. 7, rotor can include radially by outward to
The first magnet slot, the second magnet slot and the 3rd magnet slot being inside arranged in order, the first magnet slot and the second magnet slot can be U-shapeds
Magnet slot, the 3rd magnet slot can include that two centres have the magnet slot of the generally L-shaped in gap.Wherein the first magnet slot with
It is that L1 first can form width between magnetic magnetic bridge, the second magnet slot and rotor periphery that width can be formed between rotor periphery
Spend for the second of L2 can be formed between magnetic magnetic bridge, the 3rd magnet slot and rotor periphery width be L3 the 3rd every magnetic magnetic bridge,
And first every magnetic magnetic bridge width L1 can be less than the 3rd every magnetic magnetic bridge width L3, and the 3rd every magnetic magnetic bridge width L3
Can be less than second every the width L2 of magnetic magnetic bridge.
According to some embodiments of the present disclosure, rotor can include rotor core and be arranged from outside to inside in rotor core
Multiple magnet slots of row, the two ends of each magnet slot can form two every magnetic magnetic bridge with the edge of rotor core respectively, wherein
, further away from the center of rotor, the corresponding width every magnetic magnetic bridge of the magnet slot can be with smaller for magnet slot.Specifically, with Fig. 3 and Fig. 4
As a example by illustrate, every magnetic magnetic bridge 320 width L31 can be less than every magnetic magnetic bridge 322 width L32, every the width of magnetic magnetic bridge 324
Degree L33 can be less than the width L34 every magnetic magnetic bridge 326.In addition, by taking Fig. 5 and Fig. 6 as an example, can every the width L51 of magnetic magnetic bridge 526
So that less than the width L52 every magnetic magnetic bridge 528, the width L53 every magnetic magnetic bridge 530 can be less than every the width L52 of magnetic magnetic bridge 528.
The width L55 every magnetic magnetic bridge 534 can be less than every the width L54 of magnetic magnetic bridge 532, can be less than every the width L55 of magnetic magnetic bridge 534
Every the width L56 of magnetic magnetic bridge 536.
It is described below for the gap between a pair of magnets groove.
According to some embodiments of the present disclosure, rotor can include rotor core and in rotor core generally along iron
At least two magnet slots of heart tangential direction, including the first magnet slot and relative to the first magnet slot be arranged in rotor core inner side
The second magnet slot, wherein the first magnet slot can include middle two magnet slots that there is the first space, the second magnet slot can
With two magnet slots that there is Second gap including centre, the first gap can be less than the second gap.Fig. 8 is shown according to this public affairs
Embodiment, middle two examples of magnet slot with gap opened.
Specifically, as shown in figure 8, rotor include the first magnet slot 802 in unshakable in one's determination 800, arrangement iron core and relative to
First magnet slot 802 is arranged in the second magnet slot 804 of 800 inner side unshakable in one's determination.In one embodiment, the He of the first magnet slot 802
Second magnet slot 804 can have substantially the same symmetry axis radially.In one embodiment, the first magnet slot
802 magnet slots 806 and magnet slot 808 that can include being formed the first magnet slot pair.Magnet slot 806 can include Outboard Sections
840 and the adjacent part 810 adjacent with Outboard Sections 840, the Outboard Sections 840 and adjacent part 810 can generally form L
Shape.Magnet slot 808 can also include generally forming the Outboard Sections 842 and the adjacent part adjacent with Outboard Sections of L-shaped
812.The first gap 814 can be formed between adjacent part 810 and adjacent part 812.Similarly, the second magnet slot 804 can
With magnet slot 816 and magnet slot 818 including forming the second magnet slot pair.Magnet slot 816 can include generally forming L-shaped
Outboard Sections 844 and the adjacent part 820 adjacent with Outboard Sections.Magnet slot 818 can also include generally forming the outer of L-shaped
Side part 846 and the adjacent part 822 adjacent with Outboard Sections.Can be formed between adjacent part 820 and adjacent part 822
Second gap 824.In accordance with an embodiment of the present disclosure, the length in the first gap 814 can be less than the length in second gap 824.
By this arrangement, can the more effectively effect of meeting with stresses using above-mentioned gap, so as to improve mechanical stability simultaneously
And the mechanical strength of rotor is increased, and leakage field is at utmost reduced, improve motor performance.
Further, Fig. 9 show in accordance with an embodiment of the present disclosure, it is radially arranged in one group of magnet slot of Fig. 8
Two enlarged drawings of magnet slot.The length in wherein the first gap 814 represents that the length in the second gap 824 is represented with d2 with d1, and
And first gap 814 length d1 less than the second gap 824 length d2.In the actual manufacture of rotor, first gap 814
Length range can be about 0.8- about 1.4mm, the length range in second gap 824 can be about 1.0- about 1.6mm.It is above-mentioned
What number range was merely exemplary, those skilled in the art can select other suitable numerical value according to concrete application.
In addition, the magnet slot of above-mentioned L-shaped can have away from the opening of rotor center, but those skilled in the art should
Work as understanding, the magnet slot of above-mentioned L-shaped there can also be the opening towards other directions.
Additionally, according to some embodiments of the present disclosure, the rotor can also include being arranged in the adjacency section of the first magnet slot
The magnet divided in the adjacent part 820,822 of the 810,812 and second magnet slot (can be by bonding agent, draw-in groove, fastener etc.
Magnet is inserted or is embedded into magnet slot by various connected modes), as shown in the dash area of Fig. 8.
According to some embodiments of the present disclosure, as shown in figure 8, between the first magnet slot 802 and the outer rim of rotor core 800
Can also be formed can also form every magnetic magnetic bridge between magnetic magnetic bridge 826, the second magnet slot 804 and the outer rim of rotor core 800
828.Can be similarly formed every magnetic magnetic bridge in the opposite side of symmetry axis, will not be repeated here.
Although describing the gap between magnet slot with reference to Fig. 8, however, it will be appreciated by persons skilled in the art that originally
Disclosed embodiment disclose arranged from outside to inside on iron core generally along the tangential multiple magnet slots of the iron core, magnetic
Body groove further away from the center of rotor, then the smaller embodiment in the magnet slot has gap.For example, in certain embodiments, it is many
A part of in individual magnet slot can not have gap.For example as shown in figure 5, being located furthest from the magnet slot 502 of rotor center
Be formed as overall approximate U-shaped, wherein and not having a gap.And there is gap 522 and 524 in magnet slot 504 and 506.According to
The present embodiment, above-mentioned gap should meet the length of the length less than gap 524 in gap 522.
Although it will be understood by those skilled in the art that not showing that, the embodiment shown in Fig. 5 can also include such as magnet
Groove 502 has gap, and magnet slot 504 does not have gap, and magnet slot 506 has the situation in gap.In this case, according to this
Open, gap still meets magnet slot further away from the center of rotor, and the gap that the magnet slot has is smaller.That is, magnet slot 502
Gap less than magnet slot 506 gap.By said structure, the mechanical strength of rotor can be improved and improve the machinery of rotor
Stability.
In the present embodiment, the shape of magnet slot can have other selections of various reasonable.For example, in Fig. 5 and Fig. 8 institutes
In the embodiment shown, although the Outboard Sections and adjacent part of the magnet slot 504,506 with gap generally constitute L-type, so
And they can be provided with other rational shapes, such as yi word pattern or V-type etc..Again for example, not possessing shown in accompanying drawing 5
The magnet slot 502 in gap is generally U-shaped, however, it can also be in-line, V-arrangement and various other appropriate shapes.This
Outward, in the embodiment shown in fig. 8, the corresponding Part I 806 of the first magnet slot 802 and Part II 808 generally can be with
It is L-shaped, alternatively, or in addition, the corresponding Part I 816 of the second magnet slot 804 and Part II 818 generally can be L
Shape.However, according to the disclosure, they can be provided with other rational shapes.
It is described below for the thickness characteristics unshakable in one's determination between magnet.
According to some embodiments of the present disclosure, rotor can include edge unshakable in one's determination and radially arranged in the iron core
At least three magnets of tangential direction unshakable in one's determination, at least three magnet is disposed in the pre-position in the iron core, institute
Stating magnet includes the first magnet, the second magnet and the 3rd magnet that are arranged from outside to inside along radial direction unshakable in one's determination, second magnetic
The thickness of body is adjusted so that the thickness unshakable in one's determination for increasing in the case where reluctance torque does not reduce between magnets.
According to some embodiments of the present disclosure, as shown in figure 5, rotor can include being arranged in from outside to inside in unshakable in one's determination 500
The first magnet 512, the second magnet 516 and the 3rd magnet 520.First magnet 512, the second magnet 516 and the 3rd magnet 520
It is placed on the pre-position in iron core.First magnet 512, the second magnet 516 and the 3rd magnet 520 can have generally phase
Same symmetry axis radially, as shown in the dotted line of the vertical direction of Fig. 5.First magnet 512, the second magnet 516 and
Three magnets 520 can be arranged in the center section of the first magnet slot 502, the second magnet slot 504 and the 3rd magnet slot 506
In.In certain embodiments, with reference to Fig. 5 and Fig. 6, the thickness of the first magnet 512 is the center section of the first magnet slot 502
Thickness mh1, the thickness of the second magnet 516 is the thickness mh2 of the center section of the second magnet slot 504, the thickness of the 3rd magnet 520
Degree is the thickness mh3 of the center section of the 3rd magnet slot 506.In this configuration, can be by reducing the second magnet 516
Thickness mh2 increases the thickness of the corresponding core portion between magnet.This can for example reduce iron core between three layers of magnet steel
Saturation effect, improve motor torque.By finite element analysis computation, the optimal solution of mh2 thickness can be drawn.For example, one
In individual embodiment, can be by substantially not changing the thickness mh1 of the first magnet 512 and thickness mh3 of the 3rd magnet 520, only
Reduce the thickness mh2 of the second magnet 516 to reach the effect of increase torque.That is, the thickness mh2 of the second magnet 516 is less than the
The thickness mh1 of one magnet 512, and less than the thickness mh3 of the 3rd magnet 520.
In addition, in some embodiments of the present disclosure, the first magnet slot 502 can be U-shaped magnet slot, the second magnet slot
504 can include that two centres have the magnet slot of the generally L-shaped in gap 522, and the 3rd magnet slot 506 can include two
There is the magnet slot of the generally L-shaped in gap 524 in centre.The shape of above-mentioned magnet slot can using it is various other can realize turn
The structure and shape of the function that son is played in motor, can include but is not limited to the U-shaped of integral form, the L-shaped of separate form,
In-line, V-arrangement etc. and any combination of them.
In addition, the L-shaped magnet slot in the second magnet slot and the 3rd magnet slot can have the opening for deviating from rotor center, such as
It is described previously, it will be appreciated by those skilled in the art that L-shaped magnet slot here can also have the opening in various other directions.
Embodiment according to Fig. 3-Fig. 6, the explanation with reference to above-mentioned formula (3) to output torque T, by adjusting the second magnetic
The thickness of body is imitated with the saturation that the thickness unshakable in one's determination increased between the magnet of fixed position can reduce magnetic field between three layers of magnet steel
Should, reduce magnetic resistance, improve torque.Thus, in accordance with an embodiment of the present disclosure, it is possible to achieve increase in the case where magnet consumption is reduced
The output torque of big motor, so as to reduce manufacturing cost.
According to one embodiment, in the case where the diameter of rotor is for about 140mm, the thickness mh1 of the first magnet 512
Scope be for about 2.5- about 3.5mm, the scope for about 2.2- about 3.2mm of the thickness mh2 of the second magnet 516, the 3rd magnet 520
The scope of thickness mh3 is for about 2.5- about 3.5mm.In the case where the diameter of rotor is for about 170mm, the first magnet 512
The scope of thickness mh1 is for about 3.0- about 4.3mm, the scope for about 2.7- about 3.9mm of the thickness mh2 of the second magnet 516, the 3rd magnetic
The scope of the thickness mh3 of body 520 is for about 3.0- about 4.3mm.What above-mentioned number range was merely exemplary, those skilled in the art
Other suitable numerical value can be selected according to concrete application.
According to some embodiments of the present disclosure, Figure 12 show the change of the thickness mh2 of the second magnet and reluctance torque it
Between corresponding relation.With reference to shown in Figure 12 and Fig. 5, the diameter of rotor is for about 140mm, now, the first magnet 512, second
The magnet 520 of magnet 516 and the 3rd is placed on the pre-position in iron core.Specifically, the first magnet 512 and rotor periphery it
Between distance be for about that the thickness of core portion 538 between 3.2mm, and the first magnet 512 and the second magnet 516 is for about
4.6mm, the thickness of the core portion 540 between the second magnet 516 and the 3rd magnet 520 is for about 4.9mm.First magnet 512
Thickness mh1 is for about 3.0mm, and the thickness mh3 of the 3rd magnet 520 is for about 3.0mm, and the thickness mh2 of the second magnet 516 is for about
3.0mm.Under this arrangement, the thickness mh2 of the second magnet 516 of regulation makes it be reduced to 1.6mm from 3.0mm.As shown in figure 12,
Changed in the range of 2.4mm from 3.0mm in mh2, reluctance torque gradually increases with the reduction of mh2.And work as mh2 more than 2.4mm
When, reluctance torque is gradually reduced with the reduction of mh2.Therefore, in accordance with an embodiment of the present disclosure, can not reduce in reluctance torque
On the premise of reduce within the specific limits the second magnet 516 thickness mh2 (for example, in the scope of 3.0mm-2.4mm select
Mh2), the effect of reluctance torque is increased such that it is able to reach.Due to reducing the thickness of magnet, therefore magnet use can also be reduced
Amount is so as to reduce manufacturing cost.
Although illustrating the effect of the present embodiment here in connection with specific number range, but those skilled in the art
It should be appreciated that above-mentioned numerical value is merely exemplary and be not intended to limit the disclosure.With reference to the spirit or teaching of the disclosure, this
Art personnel can reasonably determine to be applied to the correspondingly-sized of other occasions.
Other structures feature below for magnet is described.
In accordance with an embodiment of the present disclosure, rotor can include generally edge that is unshakable in one's determination and being arranged from outside to inside in iron core
The first tangential magnet unshakable in one's determination, the second magnet and the 3rd magnet, wherein two outermost side ends of the first magnet and center unshakable in one's determination
Line can form the first angle, two outermost side ends of the second magnet can form the second folder with the line at center unshakable in one's determination
Angle, and two outermost side ends of the 3rd magnet can form the 3rd angle, first angle with the line at center unshakable in one's determination
Less than second angle, second angle is less than the 3rd angle.
According to some embodiments of the present disclosure, rotor can include unshakable in one's determination and be arranged from outside to inside substantially in iron core
On along unshakable in one's determination the first tangential magnet, the second magnet pair and the 3rd magnet pair, wherein two magnets of second magnet pair that
This forms the first magnet angle, and two magnets of the 3rd magnet pair form the second magnet angle each other, and the second magnet angle is small
In the first magnet angle, the first magnet angle is less than 180 °.
Figure 10 show in accordance with an embodiment of the present disclosure, be arranged in magnet slot in magnet two outermost side ends with
Angle and the schematic diagram at the magnet angle of magnet pair that the line at center unshakable in one's determination is formed.Specifically, in accordance with an embodiment of the present disclosure,
As shown in Figure 10, rotor can include rotor core 1000, be arranged in rotor core 1000 the first magnet 1010, relative to
First magnet 1010 is arranged in the second magnet 1012 of the inner side of rotor core 1000 and is arranged in relative to the second magnet 1012
3rd magnet 1018 of the inner side of rotor core 1000.Three magnets can be disposed to extend along unshakable in one's determination 1000 tangential direction respectively.
First magnet 1010, the second magnet 1012 and the 3rd magnet 1018 can be with substantially the same along the right of radial direction unshakable in one's determination
Claim axle, as shown in the vertical dotted line in Figure 10.Wherein the first magnet 1010 can be arranged in the first magnet slot 1002, the second magnetic
Body 1012 can be arranged in the second magnet slot 1004, and the 3rd magnet 1018 can be arranged in the 3rd magnet slot 1006.First
Two outermost side ends of magnet 1010, the second magnet 1012 and the 3rd magnet 1018 can divide with the line at center 1008 unshakable in one's determination
The first angle α 1, the second angle α 2 and the 3rd angle α 3 are not formed, as shown in Figure 10.First angle α 1 is less than the second angle α 2,
Second angle α 2 is less than the 3rd angle α 3.By such configuration, can more optimization stack field waveform, make rotor
The harmonic content in magnetic field is reduced closer to sine wave in the magnetic field of generation.
According to some embodiments of the present disclosure, the company for choosing two outermost side ends of magnet and center unshakable in one's determination is further illustrated
The method of the angle of line.Figure 13 shows that the magnetic potential produced by each magnet is superimposed the schematic diagram to form sinusoidal waveform.Can lead to
The relation of sinusoidal waveform is crossed to derive the value of suitable α 1, α 2 and α 3.Specifically, the point on sinusoidal waveform has y=cos
The relation of (x/ τ * π), wherein τ is constant, and y is the vertical range between the point on waveform and waveform horizontal axis, and x is on waveform
Point to waveform symmetry axle horizontal range.For example, as shown in figure 13, the first magnet 1010 the hanging down to rotor center in Figure 10
Straight distance is y1, and the horizontal range between an end A and the axis of symmetry of the first magnet of the first magnet 1010 is x1, there is x1
=τ/π * arcos (y1), and then the first angle α 1=2* β 1=2*arctg (x1/y1) in Figure 10 is obtained, wherein β 1 is first
Angle between the end of magnet 1010 and the line of rotor center and the first magnet symmetry axis.Similarly, in Figure 10
The second magnet 1012, can have x2=τ/π * arcos (y2), the second magnet 1012 in wherein Figure 10 to rotor center hangs down
Straight distance is y2, and the horizontal range between an end of the second magnet 1012 and the axis of symmetry of the second magnet is x2.Figure 10
In the second angle α 2=2* β 2=2*arctg (x2/y2), wherein β 2 is the end and the rotor center of the second magnet 1012
Angle between line and the second magnet symmetry axis.The 3rd magnet 1018 in for Figure 10, can there is x3=τ/π * arcos
(y3) vertical range that, the 3rd magnet 1018 wherein in Figure 10 arrives rotor center is y3, an end of the 3rd magnet 1018
And the horizontal range between the axis of symmetry of the 3rd magnet is x3, the 3rd angle α 3=2* β 3=2*arctg (x3/ in Figure 10
Y3), the ends of wherein β 3 for the 3rd magnet 1018 and the angle between the line and the 3rd magnet symmetry axis of rotor center.
In the case of known each dimensional parameters of above-mentioned x1, y1, x2, y2, x3, y3, the first angle α 1, the second angle α 2 and can be obtained
The value of three angle αs 3.Similarly, the choosing method is disposed with turning for more than three magnets in being readily adaptable for use in one group of magnet
Son.
Furthermore it is also possible to try to achieve the value of suitable α 1, α 2 and α 3 by parameter optimization.For example, setting β 1 is first
Variable, β 2=β 1+ Δs β 1, β 3=β 2+ Δs β 2, carries out parametrization solution, so as to obtain making magnetic field superposition be close to sinusoidal waveform
Corresponding preferred β 1, β 2, the value of β 3, so as to obtain the value of the first angle α 1, the second angle α 2 and the 3rd angle α 3.It is similar
Ground, the choosing method is readily adaptable for use in one group of magnet the rotor for being disposed with more than three magnets.
In the actual rotor manufacture, the first angle α 1 can range from about 10-13 degree, and the scope of the second angle α 2 can
Being about 20-25 degree, and the 3rd angle can range from about 30-36 degree.What above-mentioned number range was merely exemplary, this
Art personnel can select other suitable numerical value according to concrete application.
According to some embodiments of the present disclosure, as shown in Figure 10, the first magnet 1010 can be as the magnet of monoblock.The
Two magnets 1012 can be the magnet pair for including magnet 1014 and magnet 1016.3rd magnet 1018 can include magnet 1020
With the magnet pair of magnet 1022.Wherein, can be formed for the magnet pair in the first magnet 1012, magnet 1014 and magnet 1016
First magnet angle θ 1.For the magnet pair of the 3rd magnet 1018, magnet 1020 and magnet 1022 can form the second magnet angle θ 2,
And θ 1 is less than 180 degree, θ 2 is less than θ 1.By such arrangement, can further improve the waveform in magnetic field, improve poly- magnetic effect
Really, so improve motor performance.
According to some embodiments of the present disclosure, further illustrate the setting by magnet angle to improve the effect of field waveform
Really.Figure 14 shows the corresponding air gap flux density of angle displacement of different air gap center lines.In fig. 14, abscissa represents air gap
The angle displacement 0-360 degree of center line.Figure 15 shows the relation between air gap flux density and air gap flux density harmonic order.This area
Technical staff using air gap flux density percent harmonic distortion Δ ε it should be appreciated that can generally reflect the quality of field waveform.Gas
The close percent harmonic distortion of gap magneticWherein BδiRepresent the corresponding air gap flux density of the i-th harmonic order.In each harmonic order
B in corresponding air gap flux densityδ1Maximum, aberration rate is the gas of the summation with the 1st harmonic order of the air gap flux density of other harmonic orders
The close ratio of gap magnetic.Aberration rate Δ ε is smaller to represent that field waveform is better.
When the first magnet angle θ 1=180 degree shown in Figure 10 and when the second magnet angle θ 2=180 spend, aberration rate Δ ε is
44.5%.When the first magnet angle θ 1=170 degree and when the second magnet angle θ 2=160 spend, aberration rate Δ ε is 40.2%.Also
It is to say, in the case where the second magnet angle θ 2 is less than the first magnet angle θ 1, field waveform is improved, so as to improve motor
Runnability.
According to some embodiments of the present disclosure, the angular range at the first magnet angle can be about 160 °-about 175 °, described
Two magnet angles can range from about 150 °-about 165 °.What above-mentioned number range was merely exemplary, those skilled in the art can
Other suitable numerical value are selected with according to concrete application.
In addition, according to some embodiments of the present disclosure, as magnet 1014 and magnetic in the second magnet 1012 of magnet pair
Between body 1016 can have the first gap 1024, as the 3rd magnet 1018 of magnet pair magnet 1020 and magnet 1022 it
Between can have the second gap 1026, and the first gap 1024 length can be less than the second gap 1026 length.
In order to avoid obscure the disclosure purport, combined accompanying drawing teach respectively the disclosure for each side of motor
The improvement in face, however, it is understood by those of ordinary skill in the art that, improvement in terms of these described in the disclosure can freely group
Close.For example, as shown in figure 3, shown rotor can have according to novel every magnetic magnetic bridge feature given by the disclosure simultaneously
And the Outboard Sections of the magnet slot feature wider than center section.Again for example, as shown in Fig. 5,10, the rotor according to the disclosure can
With the uneven feature of the multiple magnet thicknesses feature of α, θ angle and Fig. 5 that have shown in Figure 10 simultaneously shown in.In order to keep away
Exempt to repeat, the disclosure does not have limit these improved all combinations, however, it is understood by those of ordinary skill in the art that, these
Combination is clear and rational, and is entirely included within the scope of the present disclosure.
It is described above the various embodiments of the disclosure, but what described above was merely exemplary, and exhaustive
Property, and it is also not necessarily limited to disclosed various embodiments.In the scope and spirit without departing substantially from illustrated various embodiments
In the case of, many modifications and variations are obvious for those skilled in the art.It is used herein
The selection of term, it is intended to best explain principle, practical application or the technological improvement to Market and Technology of various embodiments, or
Other those of ordinary skill of the art are made to be understood that various embodiments disclosed herein.
Claims (8)
1. a kind of rotor of motor, it is characterised in that including：
It is unshakable in one's determination；
Arranged from outside to inside in the iron core generally along unshakable in one's determination the first tangential magnet, the second magnet pair and the 3rd magnet
It is right；
Two magnets of wherein described second magnet pair form the first magnet angle each other, two magnets of the 3rd magnet pair that
This forms the second magnet angle, and the second magnet angle is less than the first magnet angle, and the first magnet angle is less than 180 °.
2. rotor according to claim 1, it is characterised in that two outermost side ends of the first magnet and center unshakable in one's determination
Line forms the first angle, and two outermost side ends of the second magnet pair form the second angle with the line at center unshakable in one's determination, and
Two outermost side ends of the 3rd magnet pair and the line at center unshakable in one's determination form the 3rd angle, and first angle is less than described the
Two angles, second angle is less than the 3rd angle.
3. rotor according to claim 2, it is characterised in that the scope of first angle is for about 10 °-about 13 °, described
The scope of the second angle is for about 20 °-about 25 °, and the scope of the 3rd angle is for about 30 °-about 36 °.
4. rotor according to claim 1 and 2, it is characterised in that the scope at the second magnet angle is for about 150 °-about
165 °, the scope at the first magnet angle is for about 160 °-about 175 °.
5. rotor according to claim 1, it is characterised in that have between first between a pair of magnets of second magnet
Gap, has the second gap between a pair of magnets of the 3rd magnet, first gap is less than the second gap.
6. rotor according to claim 5, it is characterised in that the length range in the first gap is for about 0.8- about 1.4mm,
The length range in two gaps is for about 1.0- about 1.6mm.
7. a kind of motor, it is characterised in that including：
Stator；
Rotor according to any one of claim 1-6.
8. a kind of vehicle, it is characterised in that including：
Motor, the motor includes：Stator and the rotor according to any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621035411.5U CN206211696U (en) | 2016-08-31 | 2016-08-31 | The rotor of motor, motor and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621035411.5U CN206211696U (en) | 2016-08-31 | 2016-08-31 | The rotor of motor, motor and vehicle |
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| CN206211696U true CN206211696U (en) | 2017-05-31 |
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| CN201621035411.5U Withdrawn - After Issue CN206211696U (en) | 2016-08-31 | 2016-08-31 | The rotor of motor, motor and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329773A (en) * | 2016-08-31 | 2017-01-11 | 法乐第(北京)网络科技有限公司 | Motor rotor, motor and vehicle |
-
2016
- 2016-08-31 CN CN201621035411.5U patent/CN206211696U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329773A (en) * | 2016-08-31 | 2017-01-11 | 法乐第(北京)网络科技有限公司 | Motor rotor, motor and vehicle |
| CN106329773B (en) * | 2016-08-31 | 2018-11-27 | 恒大法拉第未来智能汽车（广东）有限公司 | Rotor, motor and the vehicle of motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180911 Address after: 511400 9, Nansha District Beach Road, Guangzhou, Guangdong, 9 Patentee after: Hengda Faraday future intelligent vehicle (Guangdong) Co., Ltd. Address before: 100026 8 floor 909, 105 building 3, Yao Yuan Road, Chaoyang District, Beijing. Patentee before: Music Automotive (Beijing) Co., Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170531 Effective date of abandoning: 20181127 |