CN206364616U - Rotor, motor and the vehicle of motor - Google Patents
Rotor, motor and the vehicle of motor Download PDFInfo
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- CN206364616U CN206364616U CN201621033481.7U CN201621033481U CN206364616U CN 206364616 U CN206364616 U CN 206364616U CN 201621033481 U CN201621033481 U CN 201621033481U CN 206364616 U CN206364616 U CN 206364616U
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Abstract
This disclosure relates to the rotor of motor, motor and vehicle.The motor includes stator and rotor.The rotor can include iron core；Magnet slot, the magnet slot includes center section and Outboard Sections, generally being arranged on tangentially on the iron core along the iron core；Wherein, the thickness of the Outboard Sections of the magnet slot is more than the thickness of the center section.The rotor also includes the magnet being arranged in the center section of the magnet slot.
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.It there is the demand for 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：Iron core；Magnet
Groove, the magnet slot includes center section and Outboard Sections, generally being arranged on tangentially on the iron core along the iron core；Its
In, the thickness of the Outboard Sections of the magnet slot is more than the thickness of the center section.
According to another embodiment of the disclosure, the rotor include at least two magnet slots, including the first magnet slot and
The second magnet slot on the inside of the iron core is arranged in relative to first magnet slot.
According to another embodiment of the disclosure, first magnet slot and second magnet slot have substantially the same
The symmetry axis along iron core radial direction.
According to another embodiment of the disclosure, during at least one in first magnet slot and the second magnet slot includes
Between each outside portion for including generally forming L-shaped for existing in a pair of L-shaped magnet slot in space, this pair of L-shaped magnet slot
Divide and adjacent part, the adjacent part of the L-shaped magnet slot pair constitutes the center section of the magnet slot, this pair of L-shaped magnet
The thickness of the Outboard Sections of at least one in groove is more than the thickness of its adjacent part.
According to another embodiment of the disclosure, at least one in the L-shaped magnet slot has away from rotor center
Opening.
According to another embodiment of the disclosure, first magnet slot is U-shaped magnet slot, and second magnet slot includes
There is the magnet slot of two generally L-shapeds in gap in centre.
According to another embodiment of the disclosure, the rotor is also described including being arranged in relative to second magnet slot
The 3rd magnet slot on the inside of iron core.
According to another embodiment of the disclosure, the 3rd magnet slot includes two generally L that centre has gap
The magnet slot of shape.
According to another embodiment of the disclosure, first magnet slot, the second magnet slot and the 3rd magnet slot have big
The symmetry axis of identical radially on body.
According to another embodiment of the disclosure, the rotor also includes being arranged in the center section of the magnet slot
Magnet.
According to another embodiment of the disclosure, the thickness range of center section is about 2.4- about 3.4mm, Outboard Sections
Thickness range is about 2.8- about 3.8mm.
According to another embodiment of the disclosure, the thickness range of center section is about 2.9- about 4.2mm, Outboard Sections
Thickness range is about 3.4- about 4.7mm.
According to another embodiment of the disclosure, have between the magnet slot and the rotor periphery every magnetic magnetic bridge.
According to one embodiment of the disclosure, there is provided a kind of motor, it is characterised in that the motor include stator and
According to above-mentioned rotor.
According to one embodiment of the disclosure, there is provided a kind of vehicle, it is characterised in that the vehicle includes：Motor, institute
Stating motor includes：Stator and according to above-mentioned rotor.
Technical scheme based on more than 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 for 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 circumferentially arrange in the core using two magnet slots as one group
The schematic diagram of multigroup magnet slot；
Fig. 4 show in accordance with an embodiment of the present disclosure, two magnet slots radially arranged in Fig. 3 one group of magnet slot
Enlarged drawing；
Fig. 5 show in accordance with an embodiment of the present disclosure circumferentially arrange in the core using three magnet slots as one group
The schematic diagram of multigroup magnet slot；
Fig. 6 show in accordance with an embodiment of the present disclosure, three magnet slots radially arranged in Fig. 5 one group of magnet slot
Enlarged drawing；
Fig. 7 show in accordance with an embodiment of the present disclosure, three magnet slots radially arranged in one group of magnet slot 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, two magnet slots radially arranged in Fig. 8 one group of magnet slot
Enlarged drawing；
Figure 10 show in accordance with an embodiment of the present disclosure, two outermost side ends of magnet for being arranged in magnet slot with
The angle of the line formation of core center and the schematic diagram at the magnet angle of magnet pair；
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；
Magnetic potential produced by Figure 13 shows 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.
Embodiment
The various exemplary embodiments of the disclosure are described 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 " of singulative used herein and "the" are intended to equally include plural form.Also
Understand, the word of "comprising" one as used herein, illustrate to exist pointed 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 described numerical value to cover certain rational change range.
Referring now to Figure 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 being 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 mixed
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
Power vehicle, power dividing type motor vehicle driven by mixed power, the motor vehicle driven by mixed power of 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 18 processed, 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 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 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 for the electric power for being delivered to motor 22 is adjusted by inverter, so that the output torque of regulation motor 22.
Fig. 2 shows the schematic diagram of the motor 22 for 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 the essence and spirit of the disclosure each embodiment being restricted to specific motor type.The reality recorded according to the disclosure
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 position
In the outside of rotor portion, wherein stationary part can include stator core 202 and stator coil 200.Stator coil 200 can
To be uniformly distributed in around rotor periphery, stator coil 200 can be formed using coilings such as flat type copper wires.Rotor portion can be with
Including rotor core 204, magnet slot 206 and the rotating shaft 208 positioned at rotor center position.Rotor portion also includes being inserted into magnetic
Magnet in body groove 206.Wherein magnet can use a variety of permanent-magnet materials, can include but is not limited to aluminium nickel cobalt (AlNiCo),
Ferrite, Rare-Earth Cobalt, neodymium iron boron and binding electromagnetic material etc..In the design can be according to the size to air-gap field, regulation
Motor performance index, the stability of magnetic property, mechanical performance, processing and the various factors such as facility, financial cost of assembling
It is required that selecting permanent-magnet material.
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
The outside of center section and Outboard Sections, generally being arranged on tangentially on rotor core along rotor core, the wherein 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
Iron core 204 can be included and along multigroup magnet slot that rotor circumference is uniform or nonuniform mutation operator is in iron core 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
In points 212 (can by a variety of connected modes such as bonding agent, neck, fastener by magnet insert or be embedded into magnet slot).Magnetic
Body groove 206 can using it is a variety of it is other can realize the structure and shape for the function that rotor is played in motor, can include 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 increasing 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, the manufacturing cost of motor can't be increased while motor performance is increased according to above-described embodiment of the disclosure, and it is more
Air groove 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 circumferentially arrange in the core using two magnet slots as one group of multigroup magnet
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 be 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 are located at the both sides of 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, the thickness of Outboard Sections is more than the thickness of center section, it is possible to rise
To the effect for increasing reluctance torque in the case where not increasing magnet steel consumption and cost.As illustrated, two magnet slots and rotor
Can have respectively every magnetic magnetic bridge 320 and 322 between outer rim.In addition, the dash area in figure represents to be 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, two magnet slots radially arranged in Fig. 3 one group of magnet slot
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
It 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
The thickness of center section 312 can be more than by dividing 310 thickness, i.e. width2 can be more than mh2.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, width1 and width2 scope
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 and width2's 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, for the first magnet slot and the second magnet slot, can realize that rotor is played in motor using a variety of
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 limitation purpose, the magnet slot using L-shaped or U-shaped is 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 be 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.
According to the other embodiment of the disclosure, the first magnet slot and the second magnet slot may each comprise centre and there is sky
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 a pair of L-shaped magnet slot that above-mentioned centre has 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 circumferentially arrange in the core with three magnetic
Body groove is the schematic diagram of one group of multigroup magnet slot.Rotor shown in Fig. 5 can include the first magnet slot 502, relative to first
Magnet slot 502, which 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, to be turned
3rd magnet slot 506 of the sub- inner side of iron core 500.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
(can be by the way that a variety of connected modes such as bonding agent, neck, fastener are by magnet insertion or are embedded into magnetic shown in 5 dash area
In body groove).
Fig. 6 show in accordance with an embodiment of the present disclosure, three magnet slots radially arranged in Fig. 5 one group of magnet slot
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
It 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
It can include the magnet slot that centre has two generally L-shapeds 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, it can realize what rotor was played in motor using a variety of
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
Being equipped with three-phase symmetric winding, rotor to include magnet to provide excitation, can pass through 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, can be by forever for easy analysis
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 is shown
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 are overlapped 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 as d-axis (d axles)
The position of preceding 90 degree of electrical angles of d-axis is 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, Ea direction is identical with q direction of principal axis, and ψ is the magnetic linkage of magnet, ψ direction
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 d axles and q axle inductances respectively, R is the phase electricity of every phase winding
Resistance, i 'dAnd i 'qIt is i respectivelydAnd iqTime-derivative.
And then using 3/2 constant conversion principle of amplitude is kept, 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 the thickness of Outboard Sections of magnet slot to be 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.It can cause L in the case of the change less of q axle inductancesdAnd LqDifference increase, and then cause reluctance torque T increase.Enter
One step, is the thickness of the air-gap in magnet slot, therefore increase in the case of no increase magnet consumption due to increased
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 use necessarily
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
Crossing makes the magnetic flux every magnetic magnetic bridge part reach saturation to play a part of limiting leakage field.It is smaller every the width of magnetic magnetic bridge, this part
Magnetic resistance will be bigger, more can limit leakage magnetic flux.
According to some embodiments of the present disclosure, rotor is included at least two magnet slots arranged on 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 be less than second every magnetic magnetic bridge width.
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 be 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 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 is located at pair
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 be less than the 5th every magnetic magnetic bridge 326 width.
As shown in 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 be less than the 5th every magnetic magnetic bridge 326 width, 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 the vertical void in substantially the same symmetry axis radially, such as Fig. 5
Shown in line.Wherein, the first magnet slot 502 between the end of the symmetry axis side and the outer rim of rotor can form first
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 be less than second every magnetic magnetic bridge 528 width, and second every magnetic
The width of magnetic bridge 528 be less than the 3rd every magnetic magnetic bridge 530 width.
As shown in 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 be 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 it is small
In the 3rd 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 the magnet slot that centre has two generally L-shapeds in gap, and the embodiment shown in Fig. 3 is carried out herein
Description be solely for the purpose of illustration.For the first magnet slot, the second magnet slot, other it be able to can be realized using a variety of
The structure and shape for 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, Fig. 5 and Fig. 6 are gone to, the end positioned at symmetry axis opposite side of the first magnet slot 502 is with turning
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 turning
The 5th can be formed between the outer rim of son can be adjacent to the 4th every the cloth of magnetic magnetic bridge 532 every magnetic magnetic bridge 534 every magnetic magnetic bridge 534, the 5th
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 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 magnetic magnetic bridge 536 width, 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
The magnet slot that centre has two generally L-shapeds in gap can be included 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, it can adopt
With it is a variety of it is other can realize the structure and shape for 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 the opening away from 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 the opening away from 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, three magnet slots radially arranged in one group of magnet slot 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 outside 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 the magnet slot that two centres have 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 form that width is L3 between magnetic magnetic bridge, the 3rd magnet slot and rotor periphery 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 magnetic magnetic bridge width L2.
According to some embodiments of the present disclosure, rotor can include rotor core and be arranged from outside to inside on 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
Magnet slot is further away from the center of rotor, and the corresponding width every magnetic magnetic bridge of the magnet slot can be with smaller.Specifically, with Fig. 3 and Fig. 4
Exemplified by illustrate, every magnetic magnetic bridge 320 width L31 can be less than every magnetic magnetic bridge 322 width L32, every magnetic magnetic bridge 324
Width 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, every the width L51 of magnetic magnetic bridge 526
The width L52 every magnetic magnetic bridge 528 can be less than, can be less than the width every magnetic magnetic bridge 530 every the width L52 of magnetic magnetic bridge 528
L53.It can be less than the width L55 every magnetic magnetic bridge 534 every the width L54 of magnetic magnetic bridge 532, can be with every the width L55 of magnetic magnetic bridge 534
Less than the width L56 every 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 core tangential direction, including the first magnet slot and be arranged in relative to the first magnet slot on the inside of rotor core
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
So that including middle two magnet slots that there is Second gap, the first gap can be less than the second gap.Fig. 8 is shown according to this public affairs
The example for embodiment, middle two magnet slots with gap opened.
Specifically, as shown in figure 8, rotor include iron core 800, arrangement iron core in the first magnet slot 802 and relative to
First magnet slot 802 is arranged in the second magnet slot 804 of the inner side of iron core 800.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 can include the magnet slot 806 and magnet slot 808 of the first magnet slot pair of formation.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 the Outboard Sections 842 and the adjacent part adjacent with Outboard Sections for generally forming 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.It 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 Fig. 8 one group of magnet slot
The enlarged drawing of two magnet slots.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 be 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 the opening away from 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.
In addition, according to some embodiments of the present disclosure, the rotor can also include the adjacency section for being arranged in the first magnet slot
The magnet divided in the adjacent part 820,822 of the 810,812 and second magnet slot (can pass through bonding agent, neck, fastener etc.
Magnet is inserted or is embedded into magnet slot by a variety of connected modes), as shown in Fig. 8 dash area.
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.It can be similarly formed every magnetic magnetic bridge, will not be repeated here in the opposite side of symmetry axis.
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 along the tangential multiple magnet slots of the iron core, magnetic
Body groove is 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 without 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 is less than the gap of magnet slot 506.By said structure, the mechanical strength of rotor can be improved and improve rotor
Mechanical 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.In another 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
Outside, in the embodiment shown in fig. 8, the first magnet slot 802 corresponding Part I 806 and Part II 808 generally can be with
It is L-shaped, alternatively, or in addition, the second magnet slot 804 corresponding Part I 816 and Part II 818 generally can be L
Shape.However, according to the disclosure, they can be provided with other rational shapes.
Thickness characteristics below for the iron core between magnet are described.
According to some embodiments of the present disclosure, rotor can include iron core and radially arranged edge in the iron core
At least three magnets of iron core tangential direction, at least three magnet is disposed in the pre-position in the iron core, institute
State the first magnet, the second magnet and the 3rd magnet that magnet includes arranging from outside to inside along iron core radial direction, second magnetic
The thickness of body is adjusted so that the thickness for increasing iron core between magnets in the case where reluctance torque does not reduce.
According to some embodiments of the present disclosure, as shown in figure 5, rotor can include being arranged in from outside to inside in iron core 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
Place pre-position in the 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 Fig. 5 vertical direction.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, to increase the thickness of the corresponding core portion between magnet.This can for example reduce iron between three layers of magnet steel
The saturation effect of core, improves motor torque.By finite element analysis computation, the optimal solution of mh2 thickness can be drawn.For example,
, can be by substantially not changing the thickness mh1 of the first magnet 512 and thickness mh3 of the 3rd magnet 520, only in one embodiment
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 thickness mh1 of first 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 the magnet slot that two centres have 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 be turned using a variety of other can realize
The structure and shape of 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 away 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 a variety of other directions.
Embodiment according to Fig. 3-Fig. 6, with reference to explanation of the above-mentioned formula (3) to output torque T, by adjusting the second magnetic
The thickness of body can reduce the saturation effect in magnetic field between three layers of magnet steel to increase the thickness of the iron core between the magnet of fixed position
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 reducing magnet consumption
The output torque of big motor, so as to reduce manufacturing cost.
According to one embodiment, in the case of a diameter of about 140mm of rotor, the thickness mh1 of the first magnet 512
Scope be that about 2.5. about 3.5mm, the thickness mh2 of the second magnet 516 scope are about 2.2- about 3.2mm, the 3rd magnet 520
Thickness mh3 scope is about 2.5- about 3.5mm.In the case of a diameter of about 170mm of rotor, the first magnet 512
Thickness mh1 scope is that about 3.0- about 4.3mm, the thickness mh2 of the second magnet 516 scope are about 2.7- about 3.9mm, the 3rd magnetic
The thickness mh3 of body 520 scope is 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 thickness mh2 of the second magnet change and reluctance torque it
Between corresponding relation.With reference to shown in Figure 12 and Fig. 5, a diameter of about 140mm of rotor, now, the first magnet 512, second
The magnet 520 of magnet 516 and the 3rd is placed pre-position in the core.Specifically, the first magnet 512 and rotor periphery it
Between distance be that the thickness of core portion 538 between about 3.2mm, and the first magnet 512 and the second magnet 516 is about
4.6mm, the thickness of the core portion 540 between the second magnet 516 and the 3rd magnet 520 is about 4.9mm.First magnet 512
Thickness mh1 is about 3.0mm, and the thickness mh3 of the 3rd magnet 520 is about 3.0mm, and the thickness mh2 of the second magnet 516 is 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 mh2 from 3.0mm in the range of 2.4mm, reluctance torque gradually increases with mh2 reduction.And when mh2 is more than 2.4mm
When, reluctance torque is gradually reduced with mh2 reduction.Therefore, in accordance with an embodiment of the present disclosure, it can not reduce in reluctance torque
On the premise of reduce within the specific limits the second magnet 516 thickness mh2 (for example, in 3.0mm-2.4mm scope select
Mh2), so as to reach increase reluctance torque effect.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, sheet
Art personnel can reasonably determine the correspondingly-sized suitable for other occasions.
Other structures feature below for magnet is described.
In accordance with an embodiment of the present disclosure, rotor can include iron core and the generally edge arranged from outside to inside in the core
Iron core tangential the first magnet, the second magnet and the 3rd magnet, wherein the two outermost side ends and core center of the first magnet
Line can form the first angle, two outermost side ends of the second magnet and the line of core center can form the second folder
Angle, and two outermost side ends of the 3rd magnet and the line of core center can form the 3rd angle, first angle
Less than second angle, second angle is less than the 3rd angle.
According to some embodiments of the present disclosure, rotor can include iron core and arrange from outside to inside in the core it is big
Along the first magnet, the second magnet pair and the 3rd magnet pair that iron core is tangential on body, wherein two magnets of second magnet pair
The first magnet angle is formed each other, and two magnets of the 3rd magnet pair form the second magnet angle, the second magnet angle each other
Less than the first magnet angle, the first magnet angle is less than 180 °.
Figure 10 show in accordance with an embodiment of the present disclosure, two outermost side ends of magnet for being arranged in magnet slot with
The angle of the line formation of core center and the schematic diagram at the magnet angle of magnet pair.Specifically, in accordance with an embodiment of the present disclosure,
As shown in Figure 10, rotor can include rotor core 1000, be arranged on 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 the tangential direction of iron core 1000 respectively.
First magnet 1010, the second magnet 1012 and the 3rd magnet 1018 can have substantially the same pair along iron core radial direction
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
The line of magnet 1010, two outermost side ends of the second magnet 1012 and the 3rd magnet 1018 and core center 1008 can divide
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 core center is further illustrated
The method of the angle of line.Magnetic potential produced by Figure 13 shows each magnet is superimposed the schematic diagram to form sinusoidal waveform.It can lead to
The relation of sinusoidal waveform is crossed to derive suitable α 1, α 2 and α 3 value.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 waveform
On point to waveform symmetry axle horizontal range.For example, as shown in figure 13, the first magnet 1010 in Figure 10 arrives rotor center
Vertical range is y1, and the horizontal range between an end A of the first magnet 1010 and the axis of symmetry of the first magnet is x1, is had
X1=τ/π * arcos (y1), and then obtain the first angle α 1=2* β 1=2*arctg (x1/y1) in Figure 10, wherein β 1
Angle between the line and the first magnet symmetry axis of the end and rotor center for the first magnet 1010.Similarly, for
The second magnet 1012 in Figure 10, can have the second magnet 1012 in x2=τ/π * arcos (y2), wherein Figure 10 to arrive rotor
The vertical range at center 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.The second angle α 2=2* β 2=2*arctg (x2/y2) in Figure 10, wherein β 2 for the second magnet 1012 the end with
Angle between the line of rotor center and the second magnet symmetry axis.For the 3rd magnet 1018 in Figure 10, there can be x3=
The vertical range that the 3rd magnet 1018 in τ/π * arcos (y3), wherein Figure 10 arrives rotor center is y3, the 3rd magnet 1018
An end and the 3rd magnet the axis of symmetry between horizontal range be x3, the 3rd angle α 3=2* β 3=in Figure 10
2*arctg (x3/y3), wherein β 3 are the end of the 3rd magnet 1018 and the line and the 3rd magnet symmetry axis of rotor center
Between angle.In the case of known above-mentioned each dimensional parameters of x1, y1, x2, y2, x3, y3, can obtain the first angle α 1,
The value of second angle α 2 and the 3rd angle α 3.Similarly, the choosing method is readily applicable to be disposed with one group of magnet and is more than
The rotor of the magnet of three.
Furthermore it is also possible to try to achieve suitable α 1, α 2 and α 3 value 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 carry out parametrization solution, so as to obtain making magnetic field superposition be close to sinusoidal waveform
Corresponding preferred β 1, β 2, β 3 value, 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 applicable to be disposed with the rotor of more than three magnets in one group of magnet.
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
To be 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 the magnet as monoblock.The
Two magnets 1012 can include the magnet pair of magnet 1014 and magnet 1016.3rd magnet 1018 can include magnet 1020
With the magnet pair of magnet 1022.Wherein, for the magnet pair in the first magnet 1012, magnet 1014 and magnet 1016 can be with shapes
Into the 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, and θ 2 is less than θ 1.It by such arrangement, can further improve the waveform in magnetic field, improve poly- magnetic
Effect, and then improve the performance of motor.
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 generally can 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 summation of the air gap flux density of other harmonic orders and the gas of the 1st harmonic order
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 and the second magnet angle θ 2=180 shown in Figure 10 are spent, 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
To select other suitable numerical value according to concrete application.
In addition, according to some embodiments of the present disclosure, being used as the 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.In another example, can according to the rotor of the disclosure as shown in Fig. 5,10
With while having the uneven feature of multiple magnet thicknesses shown in the feature and Fig. 5 of α, θ angle shown in Figure 10.In order to keep away
Exempt to repeat, the disclosure does not have these improved all combinations of limit, 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 the 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 (15)
1. a kind of rotor of motor, it is characterised in that including：
Iron core；
Magnet slot, the magnet slot includes center section and Outboard Sections, generally described along being arranged on tangentially for the iron core
On iron core；
Wherein, the thickness of the Outboard Sections of the magnet slot is more than the thickness of the center section.
2. rotor according to claim 1, it is characterised in that including at least two magnet slots, including the first magnet slot and
The second magnet slot on the inside of the iron core is arranged in relative to first magnet slot.
3. rotor according to claim 2, it is characterised in that first magnet slot and second magnet slot have big
Symmetry axis of the identical along iron core radial direction on body.
4. the rotor according to any one in claim 2-3, it is characterised in that first magnet slot and the second magnet
At least one in groove include each that centre is present in a pair of L-shaped magnet slot in space, this pair of L-shaped magnet slot include it is big
The Outboard Sections and adjacent part of L-shaped are formed on body, the adjacent part of the L-shaped magnet slot pair is constituted in the magnet slot
Between part, the thickness of the Outboard Sections of at least one in this pair of L-shaped magnet slot is more than the thickness of its adjacent part.
5. rotor according to claim 4, it is characterised in that at least one in the L-shaped magnet slot has away from turning
The opening of subcenter.
6. rotor according to claim 2, it is characterised in that first magnet slot is U-shaped magnet slot, second magnetic
Body groove includes the magnet slot that centre has two generally L-shapeds in gap.
7. rotor according to claim 2, it is characterised in that also described including being arranged in relative to second magnet slot
The 3rd magnet slot on the inside of iron core.
8. rotor according to claim 7, it is characterised in that the 3rd magnet slot includes two that centre has gap
The magnet slot of generally L-shaped.
9. rotor according to claim 7, it is characterised in that first magnet slot, the second magnet slot and the 3rd magnet
Groove has substantially the same symmetry axis radially.
10. the rotor according to any one in claim 1-3, it is characterised in that also including being arranged in the magnet slot
Center section in magnet.
11. the rotor according to any one in claim 1-3, it is characterised in that the thickness range of center section is
2.4-3.4mm, the thickness range of Outboard Sections is 2.8-3.8mm.
12. the rotor according to any one in claim 1-3, it is characterised in that the thickness range of center section is
2.9-4.2mm, the thickness range of Outboard Sections is 3.4-4.7mm.
13. rotor according to claim 1, it is characterised in that have between the magnet slot and the rotor periphery every
Magnetic magnetic bridge.
14. a kind of motor, it is characterised in that including：
Stator；
Rotor according to any one of claim 1-13.
15. a kind of vehicle, it is characterised in that including：
Motor, the motor includes：Stator and the rotor according to any one of claim 1-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033481.7U CN206364616U (en) | 2016-08-31 | 2016-08-31 | Rotor, motor and the vehicle of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033481.7U CN206364616U (en) | 2016-08-31 | 2016-08-31 | Rotor, motor and the vehicle of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206364616U true CN206364616U (en) | 2017-07-28 |
Family
ID=59369160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621033481.7U Withdrawn - After Issue CN206364616U (en) | 2016-08-31 | 2016-08-31 | Rotor, motor and the vehicle of motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329770A (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 |
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2016
- 2016-08-31 CN CN201621033481.7U patent/CN206364616U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329770A (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 |
| CN106329770B (en) * | 2016-08-31 | 2019-08-27 | 法法汽车(中国)有限公司 | Rotor, motor and the vehicle of motor |
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Address after: 511458 9, Nansha District Beach Road, Guangzhou, Guangdong, 9 Patentee after: Hengda Faraday future intelligent vehicle (Guangdong) Co., Ltd. Address before: 511458 9, Nansha District Beach Road, Guangzhou, Guangdong, 9 Patentee before: Rui Chi intelligent automobile (Guangzhou) Co., Ltd. |
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