CN103872819B - Rotor assembly and permanent magnet motor including the same - Google Patents
Rotor assembly and permanent magnet motor including the same Download PDFInfo
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- CN103872819B CN103872819B CN201310164969.8A CN201310164969A CN103872819B CN 103872819 B CN103872819 B CN 103872819B CN 201310164969 A CN201310164969 A CN 201310164969A CN 103872819 B CN103872819 B CN 103872819B
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- isolation tank
- rotor
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- 238000002955 isolation Methods 0.000 claims description 147
- 230000002093 peripheral effect Effects 0.000 claims description 53
- 210000000515 tooth Anatomy 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 10
- 230000005389 magnetism Effects 0.000 abstract description 10
- 230000010349 pulsation Effects 0.000 abstract description 7
- 230000005347 demagnetization Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000036961 partial effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000003601 intercostal effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
A rotor assembly for a permanent magnet motor includes a rotor core and a plurality of permanent magnet groups uniformly arranged in a circumferential direction of the rotor core. Each of the permanent magnet groups includes a first permanent magnet located at a middle portion of the permanent magnet group and a second permanent magnet located at an end portion of the permanent magnet group. And a first magnetism isolating groove is arranged between the edge of the end part of the second permanent magnet, which is far away from the first permanent magnet, and the outer periphery of the rotor core, and the first magnetism isolating groove extends along the outer periphery of the rotor core in the extending direction of the permanent magnets. According to the rotor assembly, the magnetic field distribution between the stator teeth and the rotor permanent magnets is optimized through the magnetism isolating grooves, and the reversing of a magnetic hysteresis magnetic field is effectively restrained, so that the change of the magnetic field is reduced, and the pulsation of the output torque of the motor is reduced; on the other hand, the magnetism isolating grooves can also reduce the density of magnetic lines of force and improve the demagnetization resistance of the permanent magnets in the rotor assembly. And also to a permanent magnet machine including the rotor assembly.
Description
Technical field
The present invention relates to a kind of rotor assembly for permanent magnet motor, permanent magnetism can be reduced more particularly, to one kind
The pulsation of the output torque of body motor and the rotor assembly improving the anti-demagnetization capability of permanent magnet in motor.Further relate to one kind
Permanent magnet motor including this rotor assembly.
Background technology
At present, brushless permanent magnet direct current generator because its efficiency high, torque density are big, dependable performance the advantages of and extensively apply
In fields such as new-energy automobile, frequency converting air-conditioner compressors.But, in the operating process of brushless permanent magnet direct current generator, due to
Magnetic resistance between the teeth portion of stator core and notch differs greatly, and leads to the biography to the excitation field being produced by stator winding for the stator
Pass, in different positions, there is larger difference, thus lead to the output torque of motor to produce pulsation.
In addition, the motor of the frequency-changeable compressor sold in the market generally adopts 4 pole distribution volumes or 4 poles to concentrate
Volume structure designs, and that is, rotor adopts 4 groups of permanent magnets, i.e. 4 pole, and if stator coil is using equally distributed along stator circumferential direction
Dry (as 40) little coil or the coil concentrated along stator circumferential direction equally distributed several (as 6).Above two
The shortcoming of permanent magnet motor is that the pulsation of its output torque is larger, thus leads to motor noise in operation process larger, in addition
It is less efficient, particularly low cruise when efficiency lower.
When running into specific operation and catastrophic failure during the use of brushless permanent magnet direct current generator, it occurs high temperature
Or overcurrent phenomenon, now magnet it may happen that demagnetization phenomenon.Once the magnet of brushless permanent magnet direct current generator demagnetizes,
Then motor will lose partial properties, or even lost efficacy.The magnet that therefore brushless permanent magnet direct current generator is adopted needs to have one
Fixed high temperature resistant and anti-demagnetization capability.
In permanent magnet motor, because dense degree in rotor core for the magnetic field is different, therefore in rotor core
Permanent magnet in different parts also differs for the requirement of anti-demagnetization capability.In existing permanent magnet motor, in order to meet forever
The anti-demagnetization capability of maximum required for magnet, generally adopts higher ranked permanent magnet.In this case it is disadvantageous in that
Employ high-grade permanent magnet in the position not needing there is larger anti-demagnetization capability, thus increased the material of permanent magnet motor
Material cost.
Content of the invention
The present invention provides a kind of rotor assembly for permanent magnet motor, and this rotor assembly includes rotor core and along rotor
Multiple set of permanent magnets that circumferential direction unshakable in one's determination is equably arranged.Each of set of permanent magnets is all included positioned at set of permanent magnets
First permanent magnet at middle part and the second permanent magnet of the end positioned at set of permanent magnets.Wherein, in the second permanent magnet away from first
It is provided with the first magnet isolation tank, the first magnet isolation tank is in set of permanent magnets between the end edge of permanent magnet and the outer peripheral edge of rotor core
Extend so that the maximum circumferential size that extends in circumferential direction of the first magnet isolation tank on bearing of trend along the outer peripheral edge of rotor core
Width more than the end of the second permanent magnet.
The present invention also provides a kind of permanent magnet motor, its inner chamber including stator module and being rotatably contained in stator module
In rotor assembly, wherein, described rotor assembly is according to above rotor assembly of the present invention.
Brief description
By providing the detailed description of the specific embodiment to the present invention referring to the drawings, will be more prone to geographical
Solution the features and advantages of the present invention, in the accompanying drawings：
Fig. 1 is that the plane illustrating the permanent magnet motor including rotor assembly according to an embodiment of the invention is illustrated
Figure；
Fig. 2 is the partial enlarged drawing of the permanent magnet motor shown in Fig. 1；
Fig. 3 is that the plane illustrating the permanent magnet motor including rotor assembly according to another embodiment of the invention is illustrated
Figure；
Fig. 4 is the partial enlarged drawing of the permanent magnet motor shown in Fig. 3；
Fig. 5 is that the plane illustrating the permanent magnet motor including rotor assembly according to still a further embodiment is illustrated
Figure；And
Fig. 6 is the partial enlarged drawing of the permanent magnet motor shown in Fig. 5.
Specific embodiment
With reference to the accompanying drawings the exemplary embodiment according to the present invention is described in detail.Exemplary embodiment is retouched
State merely for the sake of demonstration purpose, and be definitely not the restriction to the present invention and its application or usage.
Refer to the attached drawing, Fig. 1 illustrates the floor map of an embodiment of the permanent magnet motor 1 according to the present invention.According to
The permanent magnet motor 1 of the present invention include stator module 20 and be rotatably contained in stator module 20 inner chamber in rotor assembly
10.According to the prior art of construction electric rotating machine, will turn by using armature spindle, rotor bearing and end cap (not shown in figure 1)
Sub-component 10 is positioned in the inner chamber of stator module 20.
Stator module 20 defines multiple stator tooths 22 that radially direction extends to the inner chamber of stator module 20.Each
The end that stator tooth 22 includes from the main yoke of stator module 20 neck extending and is usually " T-shaped ".Adjacent two
The side of " T-shaped " end is separated from each other by notch.The winding coil 24 of stator module 20 is wound on the neck of each stator tooth 22
Shape is partly gone up, and provides the magnetic field for making rotor assembly 10 rotate when being supplied to electric current.
Rotor assembly 10 is arranged in the inner chamber of stator module 20, and the impetus in the magnetic field producing in stator module 20
Under around armature spindle rotation.It is multiple that rotor assembly 10 includes rotor core 14 and the circumference along rotor core 14 is equably arranged
Set of permanent magnets 12.Each of the plurality of set of permanent magnets 12 is formed by multistage permanent magnet, as depicted in figs. 1 and 2
It is made up of three sections of permanent magnets in embodiment, be respectively located at first permanent magnet 122 at middle part of set of permanent magnets 12 and be located at permanent magnetism
Two section of second permanent magnet 124 of the end of body group 12, wherein, the first permanent magnet 122 is formed using the relatively low permanent magnet of coercivity,
Such as ferrite permanent magnet, and the second permanent magnet 124 using coercivity compared with the first permanent magnet 122 relative to higher permanent magnet
Formed, such as rare-earth permanent magnet.Advantageously, three sections of permanent magnets be formed as the U-shaped projecting with respect to the center of rotor core 14 or
Arc, i.e. positioned at the first middle permanent magnet 122 with respect to the second permanent magnet 124 positioned at both sides along rotor core 14 footpath
To direction closer to the center of rotor core 14.
In the end edge of set of permanent magnets 12, that is, the second permanent magnet 124 away from the first permanent magnet 122 outside
It is provided with the first magnet isolation tank 144 between the outer peripheral edge of edge and rotor core 14.First magnet isolation tank 144 is along the second permanent magnet 124
The outer peripheral edge of close rotor core 14 end arrangement, and along away from the first permanent magnet 122 direction extend.First every magnetic
Groove 144 starts along rotor core 14 from the end edge of the second permanent magnet 124 on the bearing of trend of set of permanent magnets 12
Periphery extends, and the edge that the outer peripheral edge along rotor core 14 of the first magnet isolation tank 144 extends has outer with rotor core 14
Periphery identical radian, the part that is, outer peripheral edge along rotor core 14 of the first magnet isolation tank 144 extends is and rotor core
14 outer peripheral edge has the arc of identical radian measure.Certainly, the outer peripheral edge along rotor core 14 of the first magnet isolation tank 144 extends
Part can also have rectilinear form, and such as, this extension can be rectangular shape substantially.The prolonging of first magnet isolation tank 144
Stretch and be close to corresponding first magnet isolation tank 144 of the second adjacent permanent magnet 124 away from the end of the second permanent magnet 124, therebetween
There is connection rib 140.Further, the first magnet isolation tank 144 is that motor is monolateral in the width in the radial direction of rotor core 14
To 4 times, here is it should be noted that the inside radius that the monolateral air gap of motor refers to the stator module 20 of motor subtracts 1 times of air gap
Go the value of the outer radius of rotor assembly 10 of motor, i.e. the inside radius of stator module 20 of permanent magnet motor 1 and permanent magnet motor 1
The outer radius of rotor assembly 10 difference.Advantageously, the second permanent magnet 124 away from the first permanent magnet 122 end,
It is provided with protuberance 144-1, for supporting the edge of the second permanent magnet 124, this protuberance 144-1 has in first magnet isolation tank 144
It is arranged on the farther corner portion in the outer peripheral edge apart from stator core 14 of the second permanent magnet 124, thus being the second permanent magnet sharply
124 provide supporting.It is formed with space 144-2 at the position that protuberance 144-1 is contacted with the corner of the second permanent magnet 124, this
Not only contribute to protect the edge part of permanent magnet, and be also convenient for the shaping of the first magnet isolation tank 144.
In the permanent magnet motor 1 according to the abovementioned embodiments of the present invention, due to being arranged on the end of set of permanent magnets 12
First magnet isolation tank 144 can optimize the magnetic resistance of rotor magnetic circuit, the distribution of control magnetic field magnetic line, and the weakened field magnetic line of force
Intensity is such that it is able to reduce the pulsation of the output torque of motor；First magnet isolation tank 144 can also reduce the easy of rotor
The counter field intensity of magnetization at demagnetization position, thus protects the second permanent magnet 124 not demagnetized.Because set of permanent magnets 12 is being easy to be subject to
Second permanent magnet 124 with higher coercivity is employed at the position demagnetized to the impact in the magnetic field of stator module 20, from
And make set of permanent magnets 12 have higher anti-demagnetization capability at the position near stator module 20, advantageously in permanent magnetism
Body motor 1 operates under big load condition, demagnetizes and lead to permanent magnet motor 1 in the marginal portion without making set of permanent magnets 12
Acting ability declines or even lost efficacy.Adopt coercivity at the position being difficult to demagnetize farther apart from stator module 20 simultaneously
Relative to the first lower permanent magnet 122 compared with the second permanent magnet 124, this can drop in the case of guaranteeing the output of motor magnetic energy
The magnet grade of low first permanent magnet 122 is such that it is able to reduce the manufacturing cost of permanent magnet motor 1.
The axis of symmetry in the close set of permanent magnets 12 of the end away from the first permanent magnet 122 for second permanent magnet 124
It is provided with the second magnet isolation tank 146 between the outer peripheral edge of side and rotor core 14.Equally, the second magnet isolation tank 146 is along rotor core
14 outer peripheral edge extends and has identical radian with the outer peripheral edge of rotor core 14, or the second magnet isolation tank 146 has mutually
The edge extending parallel to, the such as second magnet isolation tank 146 is basic rectangular shape.Further, the edge of the second magnet isolation tank 146
The distance between two sides that the outer peripheral edge of rotor core 14 extends, that is, the second magnet isolation tank 146 is along the radial direction of rotor core 14
The width in direction, is 1 times to 4 times of the monolateral air gap of motor.
Additionally, as can be seen that each set of permanent magnets 12 in permanent magnet motor 1 is with regard to along rotor from Fig. 1, Fig. 3 and Fig. 5
The axisymmetrical that unshakable in one's determination 14 radial direction extends.Permanent magnet motor 1 according to the present invention is in its second permanent magnet 124 and rotor
It is additionally provided between unshakable in one's determination 14 outer peripheral edge and become splay 3rd magnet isolation tank 148 with respect to the axis of symmetry of set of permanent magnets 12.
For each the second permanent magnet 124, one or more 3rd magnet isolation tanks 148 can be set according to actual needs, but advantageously
For less than 4, such as in the embodiment according to Fig. 1, two the 3rd are provided with every magnetic for each second permanent magnet 124
Groove 148-1 and 148-2.Each of 3rd magnet isolation tank 148 is elongated shape, such as rectangle, or can have for two ends
There is the rectangle of fillet, the two ends of each of the 3rd magnet isolation tank 148 are formed as fillet can adding in order to the 3rd magnet isolation tank 148
Work manufactures.The minimum of a value of the width of each of the 3rd magnet isolation tank 148 is 0.2mm+0.3 × a, and maximum is 0.2mm+1.5
× a, wherein a are the monolateral air gap of permanent magnet motor 1.The length of each of the 3rd magnet isolation tank 148 depends on the 3rd every magnetic
Minimum range between the first end 1481 of each of groove 148 and the outer peripheral edge of rotor core 14 and the 3rd magnet isolation tank
Minimum range between the edge of each of 148 the second end 1482 and the second permanent magnet 124, above-mentioned two distance is got over
Greatly, then the length of the 3rd magnet isolation tank 148 is less, conversely, the length of the 3rd magnet isolation tank 148 is then bigger.Here, the 3rd magnet isolation tank
Minimum range between each of 148 first end 1481 and the outer peripheral edge of rotor core 14 is the monolateral air gap of motor
0.3 times to 1.5 times, between the edge of the second end 1482 of each of the 3rd magnet isolation tank 148 and the second permanent magnet 124
Minimum range is 0.3 times to 1.5 times of the monolateral air gap of motor.It is further advantageous that being located near each second permanent magnet 124
The relative angle between adjacent two in 3rd magnet isolation tank 148 be 5 ° to 30 °, this relative angle be more advantageously 10 ° extremely
18°.As in the embodiment shown in fig. 1, between the 3rd magnet isolation tank 148-1 and the 3rd magnet isolation tank 148-2, it is advantageously formed as 5 °
Relative angle between 30 °, is more advantageously formed as the relative angle between 10 ° to 18 °.In following embodiment,
Unless otherwise noted, the generation type of the 3rd magnet isolation tank 148 is identical with this embodiment.
In the embodiment according to the permanent magnet motor 1 of the present invention shown in Fig. 1 and Fig. 2, in each set of permanent magnets 12
It is provided with the 4th magnet isolation tank 142 between first permanent magnet 122 and the second permanent magnet 124, divide in the both sides of the first permanent magnet 122
It is not provided with positioned at it the 4th magnet isolation tank 142 and the second permanent magnet 124 between.4th magnet isolation tank 142 can for circular, square with
And other shapes, in this embodiment, it is basic triangle, and one of wedge angle of triangle is towards rotor core 14
Outer peripheral edge, and it is formed with protuberance 142-1 in the bottom of the 4th magnet isolation tank 142 of triangle, in the 4th magnet isolation tank 142
Protuberance 142-1 be used for against the first permanent magnet 122 and the second permanent magnet 124 end, thus be the first permanent magnet 122 He
Second permanent magnet 124 provides supporting and fixation.Above-mentioned protuberance 142-1 is that the permanent magnet positioned at its both sides provides supporting,
Make permanent magnet more firmly and stable after being installed in stator core, will not send out in the operation process of permanent magnet motor 1
Raw displacement or swing.In addition, the position contacting with the corner of the first permanent magnet 122 and the second permanent magnet 124 in protuberance 142-1
Put formation space 142-2, this not only contributes to protect the edge part of permanent magnet, and is also convenient for the shaping of the 4th magnet isolation tank 142.
The area of each the 4th magnet isolation tank 142 is 0.05 to 0.15 times of the area of the first permanent magnet 122.4th magnet isolation tank 142 is permissible
The magnetic resistance of the magnetic circuit of optimization rotor assembly 10 further, and optimize the distribution of the magnetic line of force, do not interfere with the magnetic field of excitation field
Intensity, such that it is able to ensure maximally utilizing of permanent magnet magnetic energy, therefore ensures that the maximization of electric efficiency.
It is further advantageous that the center closer to rotor core 14 between two adjacent the first magnet isolation tanks 144
Side is formed with the 5th magnet isolation tank 149, and the 5th magnet isolation tank 149 has two sides with the outer peripheral edge identical radian measure of rotor core 14
Side, or can also have two sides being parallel to each other.Such as, when the first magnet isolation tank 144 has along outside rotor core 14
During the arc-shaped side edges that periphery extends, the 5th magnet isolation tank 149 also has the arc-shaped side edges of identical radian measure, when the first magnet isolation tank 144 has
When having the side being parallel to each other, the 5th magnet isolation tank 149 also has the side being parallel to each other.5th magnet isolation tank 149 is along rotor core
The width of 14 radial direction can identical with the first magnet isolation tank 144 it is also possible to be different from.Such as, the 5th magnet isolation tank 149 edge
The width of the radial direction of rotor core 14 is 1 times to 4 times of the monolateral air gap of motor.5th magnet isolation tank 149 can assist first
Magnet isolation tank 144 makes the Distribution of Magnetic Field of the end of the second permanent magnet 124 more optimize, and reduces the arteries and veins of motor torque output further
Anti- demagnetization capability that is dynamic and improving set of permanent magnets 12.In addition, by the optimization design for the first to the 5th magnet isolation tank, permissible
On the premise of not reducing magnetic field output, confining magnetic field distribution and magnetic hysteresis magnetic field commutator, thereby reduce changes of magnetic field effectively,
Thus reducing the pulsation of motor output torque.
As shown in Figure 3 and Figure 4, another embodiment of the permanent magnet motor 1 according to the present invention is shown.In this embodiment
In, the every pole set of permanent magnets 12 in rotor assembly 10 is formed as " one " font, and it is included positioned at middle the first permanent magnet 122 He
Positioned at the second permanent magnet 124 of the first permanent magnet 122 both sides, wherein, positioned at first permanent magnet 122 in the central authorities of set of permanent magnets 12
Formed using the relatively low magnet of coercivity, the second permanent magnet 124 positioned at the both sides of set of permanent magnets 12 compares first using coercivity
The relatively higher magnet of permanent magnet 122 is formed.In this embodiment, the axis of symmetry being formed with regard to set of permanent magnets 12 is symmetrical
Three couples the 3rd magnet isolation tanks 148-1,148-2 and 148-3.Every a pair in three pairs of the 3rd magnet isolation tanks 148 with respect to " one " font forever
The slope of magnet group 12 increases to the order at center successively according to from the edge of set of permanent magnets 12.Three couple in the present embodiment the 3rd
The length and width of magnet isolation tank 148 is identical with the embodiment above by reference to described in Fig. 1 and Fig. 2, will not be described here.In addition, it is every
Relative angle between two adjacent the 3rd magnet isolation tanks 148 is also identical with the embodiment shown in Fig. 1 and Fig. 2, such as this phase
It is 5 ° to 30 ° to angle, more advantageously for 10 ° to 18 °.Further, positioned at the end of the second permanent magnet 124 first every magnetic
Groove 144 is formed as thering is the first edge portion 1441 paralleled with the neighboring edge of the second permanent magnet 124, and be also formed with
The perpendicular second edge portion 1442 of this first edge portion 1441, the outer peripheral edge of adjacent rotor iron core of the first magnet isolation tank 144
Side is formed as the arc with the outer peripheral edge of rotor core 14 with identical radian measure, or can also be formed as linear.In phase
It is formed with connection rib 140, in this embodiment, it is generally rectangular for connecting rib 140 between two adjacent the first magnet isolation tanks 144.Separately
Outward, it is formed between the first edge portion 1441 of the first magnet isolation tank 144 and the second permanent magnet 124 neighbouring edge and be connected rib
125, the end of the second permanent magnet 124 is resisted against on the wall connecting rib 125 and supports and solid such that it is able to provide for set of permanent magnets 12
It is set for using.Also it is formed with space 123 in the corner of the second permanent magnet 124 with being connected between rib 125, this not only contributes to protect
The corner of two permanent magnets 124, and also allow for the processing of the groove for housing set of permanent magnets 12.
Permanent magnet motor 1 according to this embodiment of the invention passes through using segment permanent magnet body group 12, can ensure
On the basis of set of permanent magnets 12 has certain magnetic energy, improve the anti-demagnetization capability of set of permanent magnets 12, and magnet can be reduced and use
Amount, thus reduce the production cost of permanent magnet motor 1.In addition, the magnet isolation tank being arranged in rotor core 14 can optimize magnetic force
Distribution in rotor core for the line, weakens the intensity of the magnetic line of force, further enhances the anti-demagnetization capability of permanent magnet." one " word
Shape permanent magnet is advantageously in the processing and manufacturing of motor, thus reducing manufacturing cost further.
The 3rd embodiment of the magneto 1 according to the present invention is shown in fig. 5 and fig..In this embodiment, permanent magnet
Group 12 adopts " V " shape setting, and it includes two section of first permanent magnet 122 of the bottom positioned at V-arrangement and is located at two sections of the top of V-arrangement
Second permanent magnet 124, the first permanent magnet 122 adopts the relatively low magnet of coercivity, and the second permanent magnet 124 compares first using coercivity
The higher magnet of permanent magnet 122.In this embodiment, be provided with according to Fig. 1 and Fig. 2 embodiment identical first every
Magnetic groove 144, the second magnet isolation tank 146 and the 3rd magnet isolation tank 148, and be formed with the first magnet isolation tank 144 protuberance 144-1 with
And space 144-2, will not be described here.Certainly, can also arrange in the present embodiment just like set in the first embodiment
The 5th magnet isolation tank 149.Further, it is formed between the neighbouring end of two section of first permanent magnet 122 of the present embodiment
6th magnet isolation tank 145, forms the 6th magnet isolation tank 145 in the bottom of V-arrangement, the 6th magnet isolation tank 145 is along the length of the first permanent magnet 122
Degree direction extends, and the bottommost in V-arrangement is formed with connection rib 147 that is to say, that connecting rib 147 to be located at two respectively
Two the 6th magnet isolation tanks 145 of the end of the first permanent magnet 122 separate.In addition, in each the 6th magnet isolation tank 145 neighbouring the
It is formed with protuberance 145-1 at the position of one permanent magnet 122, for supporting the first permanent magnet 122, prevent it in magneto 1
Operation process in be subjected to displacement.Connect rib 147 the rotor core 14 along permanent magnet motor 1 radial direction away from rotor
It is formed with rotor riveted holes 16, for riveting rotor pack, in the footpath along rotor core 14 connecting rib 147 at the position at center
It is formed with every bore 18 at the position of the close rotor center in direction.That is, rotor riveted holes 16 and every bore 18 along turn
The radial direction of son unshakable in one's determination 14 is arranged on the both sides connecting rib 147, rotor riveted holes 16 closer to the outer peripheral edge of rotor core 14,
Every bore 18 closer to rotor core 14 center.According to the present embodiment every bore 18 can be circular, square or other shapes
Shape, its area is 0.05 times to 0.15 times of the area of each section of the first permanent magnet 122.Permanent magnet motor according to this embodiment
1 has higher structural strength so as to be more suitable for running up, and the quadrature axis of motor 1 and d-axis inductive proportions are increased
Greatly, which thereby enhance the saliency of motor.
In an embodiment according to the present invention, the rotor inner hole 15 for installing rotor axis of electric adopts ladder to be combined circle,
As shown in figures 1 and 3 that is to say, that the radially outward side towards rotor core is formed with the perisporium of round rotor endoporus 15
To the multiple grooves 151 extending, in the embodiment shown, the quantity of groove 151 is 6, and certainly, those skilled in the art should
Understand, the groove 151 of other quantity can be set.In addition, the rotor inner hole 15 of the permanent magnet motor 1 shown in Fig. 5 can also
Rotor inner hole 15 using this ladder composite circular.The rotor inner hole 15 of ladder composite circular can make rotor shaft and rotor
Unshakable in one's determination 14 realize form fit, and need not make to be assembled using interference fit between rotor shaft and rotor core 14, thus
It can be avoided that being made due to the deformation of rotor core 14 when rotor shaft and rotor core 14 assemble using interference fit
The risk that permanent magnet crushes.
According to one embodiment of present invention, permanent magnet motor disclosed herein has 9 stator tooths 22, thus fixed
It is formed with 9 stator coil storage tanks 26 in sub-component 20；In addition, the set of permanent magnets 12 being located in rotor assembly 10 is provided with 6
Pole is that is to say, that be provided with 6 set of permanent magnets 12, thus forming 6 groups of pole pairs, here, each group in 6 set of permanent magnets 12
It is segmented combination permanent magnet.According to this 9 stator coil storage tanks 26 of the present invention and the combination of 6 set of permanent magnets 12
Design is referred to as 6 pole 9 groove concentration volume design, and it, compared with 4 pole distribution volumes of the prior art and the concentration volume design of 4 poles, has electricity
Machine torque density is big, torque output ripple is little, the advantage of efficiency high and low cost.Additionally, the permanent magnet electricity according to the present invention
Machine 1, the central angle that the outermost edges of each group of end in set of permanent magnets 12 are corresponding in rotor core 14 is defined as
The polar arc angle of every pole set of permanent magnets 12, for each group of whole circumference with respect to rotor core 14 in set of permanent magnets 12
The center of circle angle of averagely occupancy be defined as the pole phase angle of set of permanent magnets 12, advantageously, the polar arc angle of every pole set of permanent magnets 12
Spend the pole phase angle for every pole set of permanent magnets 12 0.6 times to 0.95 times.Such as in the embodiment shown in fig. 1, every pole is forever
The central angle that the outermost edges of the second permanent magnet 124 of magnet group 12 are corresponding in rotor core 14 is every pole permanent magnet
The polar arc angle of group 12, and the pole phase angle of every pole set of permanent magnets 12 is 360 °/6=60 °, is wherein provided with 6 permanent magnets altogether
Group 12, that is, there are 6 pole set of permanent magnets 12, the polar arc angle of every pole set of permanent magnets 12 is the pole phase angle of every pole set of permanent magnets 12
0.6 times to 0.95 times of 60 ° of degree, therefore often the polar arc angle of pole set of permanent magnets 12 is 36 ° to 57 °.
According to the abovementioned embodiments of the present invention, the center of the geometric center of every pole set of permanent magnets 12 to rotor assembly 10
Distance be 0.15 times to 0.35 times of the external diameter of stator module 20 of permanent magnet motor 1.This set side of set of permanent magnets 12
In the case that formula can have certain magnetic energy guaranteeing stator module 20, stator module 20 is made to have enough intensity.
In an embodiment according to the present invention, due to being arranged between the end of permanent magnet and the outer peripheral edge of rotor core
Magnet isolation tank can optimize Distribution of Magnetic Field and effectively constrain the commutation in magnetic hysteresis magnetic field, thus reducing the change in magnetic field, and thus subtract
The pulsation of small machine output torque.Pass through be easy to demagnetize according to the rotor assembly with multisection type permanent magnet of the present invention
Position at setting there is the permanent magnet of high-coercive force, can be easy to efficiently against permanent magnet motor rotor of the prior art
The problem of demagnetization, and relatively low coercitive permanent magnet, Neng Gou great are had by setting at the position lighter by demagnetization impact
The earth reduces the material cost of rotor.In addition change the distribution of magnetic circuit reluctance also by magnet isolation tank, reduce magnetic in magnetic field
The dense degree of the line of force, thus improve the anti-demagnetization capability of permanent magnet further.
Below to according to the present invention for permanent magnet motor rotor assembly carry out summarize property explanation.
One embodiment of the rotor assembly according to the present invention, the outer peripheral edge extension along rotor core of the first magnet isolation tank
Edge has the outer peripheral edge identical radian with rotor core.
In another embodiment of the rotor assembly according to the present invention, the outer peripheral edge along rotor core of the first magnet isolation tank
The edge extending is linear.
Another embodiment of rotor assembly according to the present invention, is provided with for supporting second forever in the first magnet isolation tank
The protuberance of the end of magnet.
In a still further embodiment according to the rotor assembly of the present invention, in the corner of above-mentioned protuberance and the second permanent magnet
It is formed with space at the position of contact.
Another embodiment of rotor assembly according to the present invention, the first magnet isolation tank is along the width of the radial direction of rotor core
Spend the monolateral air gap for permanent magnet motor 1 times to 4 times.Monolateral air gap is the inside radius of stator module of permanent magnet motor with forever
The difference of the outer radius of the rotor assembly of magnet motors.
In another embodiment of the rotor assembly according to the present invention, the first magnet isolation tank is configured to make it another with adjacent
Corresponding first magnet isolation tank of one set of permanent magnets is separated by connecting intercostal.
The further embodiment of the rotor assembly according to the present invention, in the direction contrary with the bearing of trend of the first magnet isolation tank
On be provided with positioned at the second magnet isolation tank between the second permanent magnet and the outer peripheral edge of rotor core.
In another embodiment of the rotor assembly according to the present invention, the second magnet isolation tank prolongs along the outer peripheral edge of rotor core
Stretch, the edge that the outer peripheral edge along rotor core of the second magnet isolation tank extends has the outer peripheral edge identical radian with rotor core.
The a still further embodiment of the rotor assembly according to the present invention, the second magnet isolation tank extends along the outer peripheral edge of rotor core,
The edge that the outer peripheral edge along rotor core of the second magnet isolation tank extends is linear.
In the further embodiment according to the rotor assembly of the present invention, the second magnet isolation tank is along the radial direction of rotor core
Width be 1 times to 4 times of monolateral air gap of permanent magnet motor.
Another embodiment of rotor assembly according to the present invention, between the second permanent magnet and the outer peripheral edge of rotor core
It is additionally provided with and become splay 1 group to 4 group the 3rd magnet isolation tank with respect to the axis of symmetry of each of set of permanent magnets.
The further embodiment of the rotor assembly according to the present invention, each of the 3rd magnet isolation tank is elongated shape, its
The span of width is 0.2mm+0.3 × a to 0.2mm+1.5 × a, and a is the monolateral air gap of permanent magnet motor.
In another embodiment of the rotor assembly according to the present invention, the first end of each of the 3rd magnet isolation tank
The minimum range and outer peripheral edge of rotor core between is 0.3 times to 1.5 times of the monolateral air gap of permanent magnet motor.
The a still further embodiment of the rotor assembly according to the present invention, the second end of each of the 3rd magnet isolation tank and
Minimum range between the edge of two permanent magnets is 0.3 times to 1.5 times of monolateral air gap.
In another embodiment of the rotor assembly according to the present invention, 2 are provided with to 4 for each second permanent magnet
Individual 3rd magnet isolation tank, the relative angle between adjacent two in the 3rd magnet isolation tank is 5 ° to 30 °.
Another embodiment of rotor assembly according to the present invention, above-mentioned relative angle is 10 ° to 18 °.
In the further embodiment according to the rotor assembly of the present invention, in the first magnet isolation tank closer to rotor core
The side at center is formed with the 5th magnet isolation tank.
The a still further embodiment of the rotor assembly according to the present invention, the 5th magnet isolation tank along the first magnet isolation tank near the 5th every
The edge of magnetic groove extends, so that the 5th magnet isolation tank is formed as the outer peripheral edge identical radian having with rotor core.
In another embodiment of the rotor assembly according to the present invention, the 5th magnet isolation tank is along the radial direction of rotor core
Width be 1 times to 4 times of monolateral air gap of permanent magnet motor.
Another embodiment of rotor assembly according to the present invention, the polar arc angle of each of set of permanent magnets is permanent magnetism
0.6 times to 0.95 times of the pole phase angle of each of body group.
In the further embodiment according to the rotor assembly of the present invention, each of set of permanent magnets is all formed as opening
Towards the U-shaped of the outer peripheral edge of rotor core, the first permanent magnet is located at the bottom of U-shaped, and the second permanent magnet is located at the end of U-shaped, and
And it is provided with the 4th magnet isolation tank between the first permanent magnet and the second permanent magnet.
Another embodiment of rotor assembly according to the present invention, the 4th magnet isolation tank forms triangle, the wedge angle of triangle
One of towards U-shaped opening.
In another embodiment of the rotor assembly according to the present invention, it is formed with for propping up in the bottom of the 4th magnet isolation tank
Hold the first permanent magnet and the protuberance of the second permanent magnet.
The further embodiment of the rotor assembly according to the present invention, in above-mentioned protuberance with the first permanent magnet and second forever
Formation space at the position of corner contact of magnet.
In another embodiment of the rotor assembly according to the present invention, the area of each the 4th magnet isolation tank is the first permanent magnetism
0.05 times of the area of body is to 0.15 times.
Another embodiment of rotor assembly according to the present invention, each of set of permanent magnets is all formed as opening direction
The V-arrangement of the outer peripheral edge of rotor core, the first permanent magnet is divided into two sections, is located at the bottom of the both sides of V-arrangement, the second permanent magnetism position respectively
Top in V-arrangement.
In the further embodiment according to the rotor assembly of the present invention, the neighbouring end of two section of first permanent magnet it
Between be formed with the 6th magnet isolation tank.
Another embodiment of rotor assembly according to the present invention, the 6th magnet isolation tank is respectively along the extension side of the first permanent magnet
To extension, and the bottommost in V-arrangement is separated by connecting intercostal.
In a still further embodiment according to the rotor assembly of the present invention, in the radial direction along rotor core connecting rib
Side near the center of rotor core is provided with every bore.
Another embodiment of rotor assembly according to the present invention, is provided with for supporting first forever in the 6th magnet isolation tank
The protuberance of magnet.
In another embodiment of the rotor assembly according to the present invention, each of set of permanent magnets is all formed as a word
Shape.
The further embodiment of the rotor assembly according to the present invention, the first magnet isolation tank is configured by connection rib and second forever
The neighboring edge of magnet is spaced apart.
In another embodiment of the rotor assembly according to the present invention, the rotor for housing armature spindle of rotor assembly
Endoporus be shaped as the circle that circumferentially direction is formed uniformly multiple grooves.
The a still further embodiment of the rotor assembly according to the present invention, the quantity of groove is 6.
In another embodiment of the rotor assembly according to the present invention, the second permanent magnet has rectifying than the first permanent magnet
The coercivity of stupid Li Genggao.
One embodiment of the permanent magnet motor according to the present invention, stator module includes the circumferential direction around stator module
9 stator tooths equably arranging, form 9 stator coil storage tanks between described 9 stator tooths.
In an embodiment of the permanent magnet motor according to the present invention, rotor assembly includes 6 set of permanent magnets.
The above is only the brief description of the specific embodiment to the present invention, those skilled in the art can utilize institute of the present invention
The produced enlightenment of disclosed technical scheme makes various improvement or modification to the rotor of other forms or motor, or right
Rotor of the present invention or motor are made corresponding modification or are improved, and these improve or modification falls within the present invention's
Within the scope of claim is claimed.
Claims (40)
1. a kind of rotor assembly (10) for permanent magnet motor (1), described rotor assembly (10) include rotor core (14) and
The multiple set of permanent magnets (12) equably arranged along the circumferential direction of described rotor core (14), in described set of permanent magnets (12)
Each all includes the first permanent magnet (122) positioned at the middle part of described set of permanent magnets (12) and is located at described set of permanent magnets (12)
End the second permanent magnet (124), wherein：
Described second permanent magnet (124) away from described first permanent magnet (122) end edge and described rotor core
(14) it is provided with the first magnet isolation tank (144) between outer peripheral edge, described first magnet isolation tank (144) is in described set of permanent magnets (12)
On bearing of trend, the outer peripheral edge along described rotor core (14) extends, and
The direction contrary with the bearing of trend of described first magnet isolation tank (144) is provided with positioned at described second permanent magnet
(124) the second magnet isolation tank (146) and the outer peripheral edge of described rotor core (14) between.
2. rotor assembly (10) as claimed in claim 1, wherein, described first magnet isolation tank (144) along described rotor core
(14) edge that outer peripheral edge extends has the outer peripheral edge identical radian with described rotor core (14).
3. rotor assembly (10) as claimed in claim 1, wherein, described first magnet isolation tank (144) along described rotor core
(14) edge that outer peripheral edge extends is linear.
4. the rotor assembly as described in any one of claim 1-3 (10), wherein, in described first magnet isolation tank (144)
It is provided with the protuberance (144-1) of the end for supporting described second permanent magnet (124).
5. rotor assembly (10) as claimed in claim 4, wherein, in described protuberance (144-1) and described second permanent magnet
(124) it is formed with space (144-2) at the position of corner contact.
6. the rotor assembly as described in any one of claim 1-3 (10), wherein, described first magnet isolation tank (144) is along institute
The width stating the radial direction of rotor core (14) is 1 times to 4 times of monolateral air gap of described permanent magnet motor (1).
7. the rotor assembly as described in any one of claim 1-3 (10), wherein, described first magnet isolation tank (144) construction
Become to make it to pass through connection rib (140) with corresponding first magnet isolation tank (144) of adjacent another set of permanent magnets (12) to be spaced apart.
8. rotor assembly (10) as claimed in claim 1, wherein, described second magnet isolation tank (146) is along described rotor core
(14) outer peripheral edge extends, and the edge that the outer peripheral edge along described rotor core (14) of described second magnet isolation tank (146) extends has
There is the outer peripheral edge identical radian with described rotor core (14).
9. rotor assembly (10) as claimed in claim 1, wherein, described second magnet isolation tank (146) is along described rotor core
(14) outer peripheral edge extends, and the edge that the outer peripheral edge along described rotor core (14) of described second magnet isolation tank (146) extends is
Linear.
10. the rotor assembly (10) as described in claim 1,8 or 9, wherein, described second magnet isolation tank (146) is along described rotor
The width of the radial direction of (14) unshakable in one's determination is 1 times to 4 times of the monolateral air gap of described permanent magnet motor (1).
11. rotor assembly (10) as claimed in claim 1, wherein, in described second permanent magnet (124) and described rotor core
(14) it is additionally provided between outer peripheral edge and become splay 1 with respect to the axis of symmetry of each of described set of permanent magnets (12)
Group is to 4 group of the 3rd magnet isolation tank (148).
12. rotor assembly (10) as claimed in claim 11, wherein, each of described 3rd magnet isolation tank (148) is
Elongated shape, the span of its width is 0.2mm+0.3 × a to 0.2mm+1.5 × a, and a is the list of described permanent magnet motor (1)
Side air gap.
13. rotor assembly (10) as claimed in claim 11, wherein, the of each of described 3rd magnet isolation tank (148)
Minimum range between the outer peripheral edge of one end (1481) and described rotor core (14) is the monolateral of described permanent magnet motor (1)
0.3 times of air gap is to 1.5 times.
14. rotor assembly (10) as claimed in claim 13, wherein, the of each of described 3rd magnet isolation tank (148)
Minimum range between the edge of two ends (1482) and described second permanent magnet (124) be 0.3 times of described monolateral air gap extremely
1.5 again.
15. rotor assembly (10) as claimed in claim 11, wherein, are provided with 2 for the second permanent magnet (124) each described
Individual to 4 described 3rd magnet isolation tanks (148), the relative angle between adjacent two in described 3rd magnet isolation tank (148) is
5 ° to 30 °.
16. rotor assembly (10) as claimed in claim 15, wherein, described relative angle is 10 ° to 18 °.
17. rotor assembly (10) as claimed in claim 1, wherein, in described first magnet isolation tank (144) closer to described turn
The side at the center of son iron core (14) is formed with the 5th magnet isolation tank (149).
18. rotor assembly (10) as claimed in claim 11, wherein, in described first magnet isolation tank (144) closer to described
The side at the center of rotor core (14) is formed with the 5th magnet isolation tank (149).
19. rotor assembly (10) as claimed in claim 17, wherein, described 5th magnet isolation tank (149) is along described first every magnetic
The edge of close described 5th magnet isolation tank (149) of groove (144) extends, so that described 5th magnet isolation tank (149) is formed as having
Outer peripheral edge identical radian with described rotor core (14).
20. rotor assembly (10) as claimed in claim 17, wherein, described 5th magnet isolation tank (149) is along described rotor core
(14) width of radial direction is 1 times to 4 times of the monolateral air gap of described permanent magnet motor (1).
21. rotor assembly (10) as claimed in claim 1, wherein, the polar arc angle of each of described set of permanent magnets (12)
Spend the pole phase angle for each of described set of permanent magnets (12) 0.6 times to 0.95 times.
22. rotor assembly (10) as claimed in claim 1, wherein, each of described set of permanent magnets (12) is all formed as
The U-shaped of the outer peripheral edge towards described rotor core (14) for the opening, described first permanent magnet (122) is located at the bottom of described U-shaped, institute
State the end that the second permanent magnet (124) is located at described U-shaped, and in described first permanent magnet (122) and described second permanent magnet
(124) it is provided with the 4th magnet isolation tank (142) between.
23. rotor assembly (10) as claimed in claim 22, wherein, described 4th magnet isolation tank (142) forms triangle, described
One of wedge angle of triangle is towards the opening of described U-shaped.
24. rotor assembly (10) as claimed in claim 23, wherein, are formed with the bottom of described 4th magnet isolation tank (142)
For supporting the protuberance (142-1) of described first permanent magnet (122) and described second permanent magnet (124).
25. rotor assembly (10) as claimed in claim 24, wherein, in described protuberance (142-1) with described first forever
Formation space (142-2) at the position that magnet (122) contacts with the corner of described second permanent magnet (124).
26. rotor assembly (10) as described in any one of claim 22-25, wherein, each described 4th magnet isolation tank
(142) area is 0.05 times to 0.15 times of the area of described first permanent magnet (122).
27. rotor assembly (10) as claimed in claim 1, wherein, each of described set of permanent magnets (12) is all formed as
The V-arrangement of the outer peripheral edge towards described rotor core (14) for the opening, described first permanent magnet (122) is divided into two sections, is located at institute respectively
State the bottom of the both sides of V-arrangement, described second permanent magnet (124) is located at the top of described V-arrangement.
28. rotor assembly (10) as claimed in claim 11, wherein, described set of permanent magnets (12) is formed as opening towards described
The V-arrangement of the outer peripheral edge of rotor core (14), described first permanent magnet (122) is divided into two sections, is located at the both sides of described V-arrangement respectively
Bottom, described second permanent magnet (124) is located at the top of described V-arrangement.
29. rotor assembly (10) as claimed in claim 27 are wherein, neighbouring in two sections of described first permanent magnets (122)
It is formed with the 6th magnet isolation tank (145) between end.
30. rotor assembly (10) as claimed in claim 29, wherein, described 6th magnet isolation tank (145) is respectively along described first
The bearing of trend of permanent magnet (122) extends, and the bottommost in described V-arrangement is spaced apart by connecting rib (147).
31. rotor assembly (10) as claimed in claim 30, wherein, in described connection rib (147) along described rotor core
(14) side at the center near described rotor core (14) for the radial direction is provided with every bore (18).
32. rotor assembly (10) as claimed in claim 29, wherein, be provided with described 6th magnet isolation tank (145) for
Support the protuberance (145-1) of described first permanent magnet (122).
33. rotor assembly (10) as claimed in claim 1, wherein, each of described set of permanent magnets (12) is all formed as
In-line.
34. rotor assembly (10) as claimed in claim 33, wherein, described first magnet isolation tank (144) is configured by connection
Rib (125) is spaced apart with the neighboring edge of described second permanent magnet (124).
35. rotor assembly (10) as described in any one of claim 1-3, wherein, being used for of described rotor assembly (10)
The rotor inner hole (15) of accommodating armature spindle be shaped as the circle that circumferentially direction is formed uniformly multiple grooves (151).
36. rotor assembly (10) as claimed in claim 35, wherein, the quantity of described groove (151) is 6.
37. rotor assembly (10) as described in any one of claim 1-3, wherein, described second permanent magnet (124) has
The coercivity higher than the coercivity of described first permanent magnet (122).
A kind of 38. permanent magnet motors (1), including stator module (20) with the inner chamber that is rotatably contained in described stator module (20)
In rotor assembly, described rotor assembly is the rotor assembly (10) according to any one of claim 1-37.
39. permanent magnet motors (1) as claimed in claim 38, wherein, described stator module (20) is included around described stator
9 stator tooths (22) that the circumferential direction of assembly (20) is equably arranged, form 9 between described 9 stator tooths (22) and determine
Subcoil storage tank (26).
40. permanent magnet motors (1) as claimed in claim 39, wherein, described rotor assembly (10) includes 6 set of permanent magnets
(12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310164969.8A CN103872819B (en) | 2012-12-10 | 2013-05-07 | Rotor assembly and permanent magnet motor including the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105284509 | 2012-12-10 | ||
| CN2012206763417 | 2012-12-10 | ||
| CN201220676341 | 2012-12-10 | ||
| CN201220676341.7 | 2012-12-10 | ||
| CN201210528450.9 | 2012-12-10 | ||
| CN201210528450 | 2012-12-10 | ||
| CN201310164969.8A CN103872819B (en) | 2012-12-10 | 2013-05-07 | Rotor assembly and permanent magnet motor including the same |
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| CN103872819A CN103872819A (en) | 2014-06-18 |
| CN103872819B true CN103872819B (en) | 2017-02-15 |
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| CN 201320242159 Expired - Lifetime CN203219035U (en) | 2012-12-10 | 2013-05-07 | Rotor assembly and permanent magnet motor including the same |
| CN 201320242413 Expired - Lifetime CN203219023U (en) | 2012-12-10 | 2013-05-07 | Motor rotor |
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| CN 201320242413 Expired - Lifetime CN203219023U (en) | 2012-12-10 | 2013-05-07 | Motor rotor |
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| CN112994288B (en) * | 2019-12-12 | 2022-06-14 | 中车永济电机有限公司 | Permanent magnet motor rotor magnetic circuit topological structure |
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| CN114094740B (en) * | 2020-07-31 | 2023-03-14 | 安徽威灵汽车部件有限公司 | Rotor punching sheet, rotor, motor and vehicle |
| EP4012893A1 (en) * | 2020-12-10 | 2022-06-15 | Volvo Car Corporation | Electric machine |
| CN112994290B (en) * | 2021-02-07 | 2022-03-11 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure and permanent magnet synchronous motor |
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| CN117353484A (en) * | 2022-06-29 | 2024-01-05 | 比亚迪股份有限公司 | Rotors, motors and vehicles |
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- 2013-05-07 CN CN 201320242159 patent/CN203219035U/en not_active Expired - Lifetime
- 2013-05-07 CN CN 201320242413 patent/CN203219023U/en not_active Expired - Lifetime
- 2013-10-31 WO PCT/CN2013/086334 patent/WO2014090050A1/en active Application Filing
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| CN201726213U (en) * | 2010-07-19 | 2011-01-26 | 余姚市兰山电机企业有限公司 | Small-power motor rotor sheet bore noncircular structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN203219023U (en) | 2013-09-25 |
| CN203219035U (en) | 2013-09-25 |
| WO2014090050A1 (en) | 2014-06-19 |
| CN103872819A (en) | 2014-06-18 |
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