CN109378931A - The magnetization method and electric car of a kind of motor in electric automobile, motor in electric automobile - Google Patents
The magnetization method and electric car of a kind of motor in electric automobile, motor in electric automobile Download PDFInfo
- Publication number
- CN109378931A CN109378931A CN201810952017.5A CN201810952017A CN109378931A CN 109378931 A CN109378931 A CN 109378931A CN 201810952017 A CN201810952017 A CN 201810952017A CN 109378931 A CN109378931 A CN 109378931A
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- China
- Prior art keywords
- groove
- motor
- electric automobile
- rotor
- end cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Embodiment of the present invention discloses the magnetization method and electric car of a kind of motor in electric automobile, motor in electric automobile.Motor in electric automobile includes stator and rotor, the rotor includes rotor core, shaft and magnetizes and position end cap, described magnetize positions end cap and adapts to fit with the working face of magnet charger, the positioning end that magnetizes is covered with groove, there is dynamic balancing hole, the groove depth of the groove is greater than the height of the overlap generated in the manufacturing process in the dynamic balancing hole in the groove.The overlap generated in the manufacturing process in dynamic balancing hole will not stretch out groove, improve the flatness of rotor endcap, ensure that there is no drift angles between the mechanical axis of rotor magnet and the axis of magnet, and thus slow down or eliminate the adverse effects such as vibration, noise, low efficiency.
Description
Technical field
Embodiment of the present invention is related to automobile technical field, in particular to a kind of motor in electric automobile, motor in electric automobile
Magnetization method and electric car.
Background technique
Have in national newest standards " term and definition of automobile and trailer type " (GB/T 3730.1-2001) to automobile
Such as give a definition: by power drive, the vehicle of the non-track carrying with 4 or 4 or more wheels is mainly used for: carrying personnel
And (or) cargo;Draw the vehicle of carrying personnel and (or) cargo;Specific use.Energy shortage, oil crisis and environmental pollution
It grows in intensity, brings tremendous influence to people's lives, be directly related to the sustainable development of national economy and society.The world is each
State is all in active development new energy technology.
Energy shortage, oil crisis and environmental pollution grow in intensity, and bring tremendous influence, direct relation to people's lives
To the sustainable development of national economy and society.Countries in the world are all in active development new energy technology.Electric car is as a kind of
Reduce the new-energy automobile of consumption of petroleum, low pollution, low noise, it is considered to be solve the important way of energy crisis and environmental degradation
Diameter.
The electric energy of power supply is converted mechanical energy by motor in electric automobile, passes through transmission device or direct drive of wheel and work
Device.By purposes point, motor in electric automobile includes driving motor and control motor.
Motor needs to move balance hole in smooth rotor endcap, in dynamic balancing when rotor carries out dynamic balancing at present
Hole periphery generates overlap.Overlap will affect the flatness of rotor endcap, cause in subsequent magnetize, rotor endcap and rotation axis
Positioning is inaccurate, and in turn resulting in the mechanical axis of the magnet of rotor, there are drift angles with the axis of magnet, causes to vibrate to motor operation, make an uproar
The adverse effects such as sound, low efficiency.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of motor in electric automobile, motor in electric automobile magnetization method and
Electric car.
The technical solution of embodiment of the present invention is as follows:
A kind of motor in electric automobile, includes stator and rotor, and the rotor includes rotor core, shaft and the positioning end that magnetizes
Lid, described magnetize position end cap and adapt to fit with the working face of magnet charger, and the positioning end that magnetizes is covered with groove, institute
Stating has dynamic balancing hole in groove, the groove depth of the groove is greater than the height of the overlap generated in the manufacturing process in the dynamic balancing hole
Degree.
In one embodiment, the groove depth is greater than or equal to two millimeters.
In one embodiment, the groove includes to position the annular of the circumferentially continuous extension of end cap along described magnetize
Slot.
In one embodiment, the groove includes to position the circumferentially spaced multiple of end cap along described magnetize
Slot.
In one embodiment, the dynamic balancing hole is arranged in the centre of the groove.
A kind of magnetization method of motor in electric automobile, the motor in electric automobile include stator and rotor, the rotor packet
It containing rotor core, shaft and magnetizes and positions end cap, described magnetize positions end cap and adapt to fit with the working face of magnet charger;It should
The step of method includes the height of the overlap generated in the manufacturing process for predefine dynamic balancing hole;This method further include:
Setting groove is covered in the positioning end that magnetizes, the groove depth of the groove is greater than the manufacturing process in the dynamic balancing hole
The height of the overlap of middle generation;
Dynamic balancing is executed to the rotor using dynamic balancing machine, is arranged in the groove that the positioning end that magnetizes covers dynamic flat
Weighing apparatus hole;
Described magnetize is positioned end cap as positioning surface with magnet charger and connect;
Enabling the magnet charger is the magnetizing.
In one embodiment, the groove depth is greater than or equal to two millimeters.
In one embodiment, it is described the positioning end that magnetizes cover setting groove include: along the positioning end that magnetizes
The annular groove being extended continuously is arranged in the circumferential direction of lid.
In one embodiment, it is described the positioning end that magnetizes cover setting groove include: along the positioning end that magnetizes
Spaced apart multiple slots are arranged in the circumferential direction of lid.
A kind of electric car includes motor in electric automobile as described above.
It can be seen from the above technical proposal that the motor in electric automobile of embodiment of the present invention includes stator and rotor, turn
Attached bag is containing rotor core, shaft and magnetizes and positions end cap, and magnetizing positions end cap and adapt to fit with the working face of magnet charger, fills
There is groove on magnetic orientation end cap, there is dynamic balancing hole in groove, the groove depth of groove, which is greater than in the manufacturing process in dynamic balancing hole, to be produced
The height of raw overlap.As it can be seen that embodiment of the present invention covers setting for the subsequent dynamic balancing hole squeezed into the positioning end that magnetizes
Groove, and the groove depth of groove is greater than the height of the overlap generated in the manufacturing process in dynamic balancing hole, therefore the system in dynamic balancing hole
The overlap generated during making will not stretch out groove, improve the flatness of rotor endcap, and ensure that the machinery of rotor magnet
Drift angle is not present between axis and the axis of magnet, and thus slows down or eliminate the adverse effects such as vibration, noise, low efficiency.
Moreover, embodiment of the present invention has a variety of mode of grooving, applicability is improved.
Detailed description of the invention
Only illustratively description and explain the present invention for the following drawings, not delimit the scope of the invention.
Fig. 1 is the demonstrative structure figure of electric car rotor.
Fig. 2 is the dynamically balanced exemplary schematic representation of electric car rotor.
Fig. 3 is that the overlap schematic diagram after dynamic balancing is executed according to the prior art.
Fig. 4 is the process schematic for getting dynamic balancing hole according to embodiment of the present invention.
Fig. 5 is the schematic diagram that magnetizes of electric automobile motor of the present invention.
Fig. 6 is the magnetization method flow chart according to the motor in electric automobile of embodiment of the present invention.
Specific embodiment
In order to which the technical features, objects and effects of invention are more clearly understood, the Detailed description of the invention present invention is now compareed
Specific embodiment, identical label indicates identical part in the various figures.
It is succinct and intuitive in order to what is described, hereafter by describing several representative embodiments come to side of the invention
Case is illustrated.A large amount of details is only used for helping to understand the solution of the present invention in embodiment.However, it will be apparent that of the invention
Technical solution can be not limited to these details when realizing.In order to avoid unnecessarily having obscured the solution of the present invention, Yi Xieshi
It applies mode not described meticulously, but only gives frame.Hereinafter, " comprising " refers to " including but not limited to ", " root
According to ... " refer to " according at least to ..., but be not limited to according only to ... ".Due to the speech habits of Chinese, hereinafter without spy
When not pointing out the quantity of an ingredient, it is meant that the ingredient is either one or more, or can be regarded as at least one.
Motor in electric automobile generally includes stator (Stator) and rotor (Rotor).Stator and rotor pass through magnet exciting coil
Effect cooperate the energy of electromagnetism be converted to mechanical energy.
Fig. 1 is the demonstrative structure figure of electric car rotor.
As seen from Figure 1, rotor includes rotor core 12, shaft 11 and end cap 13.
The error unevenly or in blank defect, processing and assembly generated due to rotor material, or even just have when design
The many factors such as asymmetrical geometry, so that rotor is when rotated, the centrifugal intertia force that each small particle generates thereon
Cannot cancel out each other, centrifugal intertia force by bearing be applied to it is mechanical and its on the basis of, cause to vibrate, generate noise, accelerate axis
Abrasion is held, mechanical life is shortened, sexual behavior event can be damaged when serious.
For this reason, it may be necessary to carry out dynamic balancing to rotor, the balance accuracy grade of permission is reached, or makes the machine therefore generated
Tool Oscillation Amplitude drops in allowed limits.
Fig. 2 is the dynamically balanced exemplary schematic representation of electric car rotor.
As it can be seen that rotor is rotated according to direction shown in Fig. 2,13 passive equilibrium machine 14 of the end cap punching of rotor.However, punching
In the process, overlap can be generated on dynamic balancing hole periphery.Overlap will affect the flatness of rotor endcap.When the rotor endcap need with
When magnetizing is thought in magnet charger fitting, it is inclined that the rotor endcap of out-of-flatness causes the mechanical axis of rotor magnet and the axis of magnet to exist
Adverse effect is caused to motor operation in angle.
Fig. 3 is that the overlap schematic diagram after dynamic balancing is executed according to the prior art.
As seen from Figure 3, dynamic balancing hole 17 is got in rotor endcap.Moreover, the intersection in dynamic balancing hole 17 and end cap
Produce the first overlap 15 and the second overlap 16.The presence of first overlap 15 and the second overlap 16, has seriously affected rotor endcap
Flatness.When rotor endcap needs are bonded with magnet charger thinks magnetizing, the first overlap 15 and the second overlap 16 are led
There are drift angles for the mechanical axis and the axis of magnet for causing rotor magnet, cause adverse effect to motor operation.
Applicants have discovered that the drawbacks described above of the prior art, proposes that one kind can reduce overlap to rotor endcap flatness shadow
Loud motor in electric automobile.
The motor in electric automobile of embodiment of the present invention, includes stator and rotor, and rotor includes rotor core, shaft and fills
Magnetic orientation end cap, magnetizing positions end cap and adapts to fit with the working face of magnet charger, and the positioning end that magnetizes is covered with groove, recessed
There is dynamic balancing hole, the groove depth of groove is greater than the height of the overlap generated in the manufacturing process in dynamic balancing hole in slot.
As it can be seen that embodiment of the present invention covers setting for the subsequent groove for squeezing into dynamic balancing hole in the positioning end that magnetizes, and
And the groove depth of groove is greater than the height of the overlap generated in the manufacturing process in dynamic balancing hole, therefore in the manufacturing process in dynamic balancing hole
The overlap of generation will not stretch out groove, improve the flatness of rotor endcap, and ensure that the mechanical axis and magnetic of rotor magnet
Drift angle is not present between axis, and thus slows down or eliminate the adverse effects such as vibration, noise, low efficiency.
Applicant has found by a large number of experiments: the height of the overlap generated in the manufacturing process in dynamic balancing hole usually will not be high
In two millimeters.It is therefore preferred that the groove depth of groove is greater than or equal to two millimeters, to guarantee in the manufacturing process in dynamic balancing hole
The overlap of generation will not stretch out groove.
In one embodiment, groove includes along the annular groove for positioning the circumferentially continuous extension of end cap that magnetizes.One
In a embodiment, groove includes along the circumferentially spaced multiple slots for positioning end cap that magnetize.In one embodiment,
Dynamic balancing hole is arranged in the centre of groove.
The above demonstration describes the specific example of groove and dynamic balancing hole position, and those skilled in the art can anticipate
Know, this description is only exemplary, is not intended to limit the present invention the protection scope of embodiment.
Fig. 4 is the process schematic for getting dynamic balancing hole according to embodiment of the present invention.
In Fig. 4, in accordance with the order from top to bottom, magnetizing for rotor is shown respectively and positions the section of end cap 13, magnetize and determine
It the section of position 13 upper groove of end cap and magnetizes and positions the section in the hole of the dynamic balancing on end cap 13.
Firstly, groove 18 and groove 19 are arranged on end cap 13 magnetizing to position, it is suitable for setting in further groove 18 and groove 19
Set dynamic balancing hole.The groove depth of groove 18 and groove 19 is S.Preferably, S is more than or equal to 2 millimeters.
Then, dynamic balancing hole 17 is set in groove 18, dynamic balancing hole 20 is set in groove 19, it is dynamic to be executed for rotor
Balance Treatment.Wherein, there are the first overlap 21 and the second overlap 22 during dynamic balancing hole 17 is set;Dynamic balancing hole is set
There are third overlap 23 and the 4th overlap 24 during 20.
From fig. 4, it can be seen that since the height of the first overlap 21, the second overlap 22, third overlap 23 and the 4th overlap 24 is small
In S, therefore the first overlap 21, the second overlap 22, third overlap 23 and the 4th overlap 24 will not stretch out respective groove, and it is fixed to magnetize
The flatness of position end cap 13 is improved.
Fig. 5 is the schematic diagram that magnetizes of electric automobile motor of the present invention.
As seen from Figure 5, magnetizing for dynamic balancing hole is got comprising such as Fig. 4 position end cap 13, rotor core 12 and shaft 11
Rotor connect with magnet charger, be bonded wherein magnetizing and positioning end cap 13 as positioning surface with the working face 30 of magnet charger.Magnet charger
During for the magnetizing, end cap 13 is positioned with good flatness, the mechanical axis of the magnet of rotor due to magnetizing
Drift angle is not present with the axis of magnet, therefore can be to avoid the adverse effects such as vibration, noise, low efficiency in motor operation.
Based on foregoing description, embodiment of the present invention also proposed a kind of magnetization method of motor in electric automobile.
Fig. 6 is the magnetization method flow chart according to the motor in electric automobile of embodiment of the present invention.Motor in electric automobile packet
Containing stator and rotor, wherein rotor includes rotor core, shaft and magnetizes and position end cap, and magnetizing positions end cap and adapt to and magnetize
The working face of machine fits.This method includes the step of the height of the overlap generated in the manufacturing process for predefine dynamic balancing hole
Suddenly, the maximum height of overlap is determined including a large amount of empirical datas in the manufacturing process based on balance hole.Herein, the height of overlap
Degree (i.e. the maximum height of overlap) is normally no higher than two millimeters.
As shown in fig. 6, this method further include:
Step 601: covering setting groove in the positioning end that magnetizes, the groove depth of groove, which is greater than in the manufacturing process in dynamic balancing hole, to be produced
The height of raw overlap.
Herein, the equipment such as groover be can use and cover setting groove in the positioning end that magnetizes.
Step 602: dynamic balancing being executed to rotor using dynamic balancing machine, is arranged in the groove that the positioning end that magnetizes covers dynamic flat
Weighing apparatus hole.
Step 603: will magnetize positions end cap as positioning surface with magnet charger and connect.
Step 604: enabled magnet charger is magnetizing.
In one embodiment, groove depth is greater than or equal to two millimeters.
In one embodiment, the positioning end that magnetizes cover setting groove include: along the circumferential direction for positioning end cap that magnetizes,
The annular groove being extended continuously is set.
In one embodiment, covering setting groove in the positioning end that magnetizes includes: to position end cap along described magnetize
It is circumferential, spaced apart multiple slots are set.
Can by embodiment of the present invention proposes motor in electric automobile be applied in various electric cars, such as pure electric vehicle
Automobile (BEV), hybrid vehicle (HEV), fuel cell car (FCEV), etc..
In conclusion the motor in electric automobile of embodiment of the present invention include stator and rotor, rotor include rotor core,
It shaft and magnetizes and positions end cap, magnetizing positions end cap and adapt to fit with the working face of magnet charger, and the positioning end that magnetizes covers tool
It is fluted, there is dynamic balancing hole, the groove depth of groove is greater than the height of the overlap generated in the manufacturing process in dynamic balancing hole in groove.
As it can be seen that embodiment of the present invention covers setting for the subsequent groove for squeezing into dynamic balancing hole in the positioning end that magnetizes, and
And the groove depth of groove is greater than the height of the overlap generated in the manufacturing process in dynamic balancing hole, therefore in the manufacturing process in dynamic balancing hole
The overlap of generation will not stretch out groove, improve the flatness of rotor endcap, and ensure that the mechanical axis and magnetic of rotor magnet
Drift angle is not present between axis, and thus slows down or eliminate the adverse effects such as vibration, noise, low efficiency.
Moreover, embodiment of the present invention has a variety of mode of grooving, applicability is improved.
It should be noted that step and module not all in above-mentioned each process and each structure chart be all it is necessary, can
To ignore certain steps or module according to the actual needs.Each step execution sequence be not it is fixed, can according to need into
Row adjustment.The division of each module is intended merely to facilitate the division functionally that description uses, and in actual implementation, a module can
It is realized with point by multiple modules, the function of multiple modules can also be realized by the same module, these modules can be located at same
In a equipment, it can also be located in different equipment.
Hardware module in each embodiment mechanically or can be realized electronically.
For example, a hardware module may include the permanent circuit specially designed or logical device (such as application specific processor,
Such as FPGA or ASIC) for completing specifically to operate.Hardware module also may include by the programmable logic of software provisional configuration
Device or circuit (as included general processor or other programmable processors) are for executing specific operation.As for specifically using machine
Tool mode, or use dedicated permanent circuit, or using provisional configuration circuit (such as being configured by software) come reality
Existing hardware module can be determined according to cost and temporal consideration.
The present invention also provides a kind of machine readable storage medium, storage is as described in the present application for executing a machine
The instruction of method.Specifically, system or device equipped with storage medium can be provided, store realization on the storage medium
The software program code of the function of any embodiment in above-described embodiment, and make computer (or the CPU of the system or device
Or MPU) read and execute the program code being stored in a storage medium.
Further, it is also possible to make operating system for calculating hands- operation etc. complete part by the instruction based on program code
Or whole practical operation.It can also will write and be inserted into the expansion board in computer from the program code that storage medium is read
It in set memory or writes in the memory being arranged in the expanding element being connected to a computer, is then based on program
The instruction of code makes the CPU etc. being mounted on expansion board or expanding element come execution part and whole practical operations, thus real
The function of any embodiment in existing above embodiment.
Storage medium embodiment for providing program code include floppy disk, hard disk, magneto-optic disk, CD (such as CD-ROM,
CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), tape, non-volatile memory card and ROM.Selectively,
It can be by communication network from download program code on server computer or cloud.
Herein, " schematic " expression " serving as examplea, instances, or illustrations " should not will be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to technical solution that is a kind of preferred or more having advantages.To make simplified form,
Part related to the present invention is only schematically shown in each figure, and does not represent its practical structures as product.
In addition, so that simplified form is easy to understand, with the component of identical structure or function in some figures, only schematically
Ground depicts one of those, or has only marked one of those.Herein, "one" is not offered as dependent part of the present invention
The quantity divided is limited to " only this ", and "one" does not indicate to exclude the quantity " more than one " of relevant portion of the present invention
Situation.Herein, "upper", "lower", "front", "rear", "left", "right", "inner", "outside" etc. are only used for indicating between relevant portion
Relative positional relationship, and the absolute position of these non-limiting relevant portions.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope that is bright, and being not intended to limit the invention, it is all without departing from equivalent embodiments made by technical spirit of the present invention or
Change, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.
Claims (10)
- Include stator and rotor 1. a kind of motor in electric automobile, which is characterized in that the rotor include rotor core, shaft and It magnetizes and positions end cap, described magnetize positions end cap and adapt to fit with the working face of magnet charger, and the positioning end that magnetizes covers With groove, there is dynamic balancing hole in the groove, the groove depth of the groove, which is greater than in the manufacturing process in the dynamic balancing hole, to be produced The height of raw overlap.
- 2. motor in electric automobile according to claim 1, which is characterized in that the groove depth is greater than or equal to two millimeters.
- 3. motor in electric automobile according to claim 1, which is characterized in that the groove includes along the positioning of magnetizing The annular groove of the circumferentially continuous extension of end cap.
- 4. motor in electric automobile according to claim 1, which is characterized in that the groove includes along the positioning of magnetizing Circumferentially spaced multiple slots of end cap.
- 5. motor in electric automobile according to claim 1, which is characterized in that the dynamic balancing hole is arranged in the groove It is intermediate.
- 6. a kind of magnetization method of motor in electric automobile, the motor in electric automobile includes stator and rotor, which is characterized in that institute It states rotor to include rotor core, shaft and magnetize and position end cap, described magnetize positions end cap and adapt to working face with magnet charger It fits;The step of this method includes the height of the overlap generated in the manufacturing process for predefine dynamic balancing hole;This method is also Include:Setting groove is covered in the positioning end that magnetizes, the groove depth of the groove, which is greater than in the manufacturing process in the dynamic balancing hole, to be produced The height of raw overlap;Dynamic balancing is executed to the rotor using dynamic balancing machine, dynamic balancing is set in the groove that the positioning end that magnetizes covers Hole;Described magnetize is positioned end cap as positioning surface with magnet charger and connect;Enabling the magnet charger is the magnetizing.
- 7. the magnetization method of motor in electric automobile according to claim 6, which is characterized in that the groove depth is greater than or equal to Two millimeters.
- 8. the magnetization method of motor in electric automobile according to claim 6, which is characterized in that described to position end cap magnetizing Upper setting groove includes: to position the circumferential direction of end cap along described magnetize, and the annular groove being extended continuously is arranged.
- 9. the magnetization method of motor in electric automobile according to claim 6, which is characterized in that described to position end cap magnetizing Upper setting groove includes: to position the circumferential direction of end cap along described magnetize, and spaced apart multiple slots are arranged.
- 10. a kind of electric car, which is characterized in that include motor in electric automobile as described in claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810952017.5A CN109378931A (en) | 2018-08-21 | 2018-08-21 | The magnetization method and electric car of a kind of motor in electric automobile, motor in electric automobile |
Applications Claiming Priority (1)
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CN201810952017.5A CN109378931A (en) | 2018-08-21 | 2018-08-21 | The magnetization method and electric car of a kind of motor in electric automobile, motor in electric automobile |
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CN201810952017.5A Pending CN109378931A (en) | 2018-08-21 | 2018-08-21 | The magnetization method and electric car of a kind of motor in electric automobile, motor in electric automobile |
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US5445556A (en) * | 1990-01-31 | 1995-08-29 | Canon Kabushiki Kaisha | Vibration motor and method of machining a vibration member thereof |
CN201869071U (en) * | 2010-10-21 | 2011-06-15 | 德昌电机(深圳)有限公司 | Permanent-magnet motor |
JP2013021802A (en) * | 2011-07-11 | 2013-01-31 | Toyota Motor Corp | Rotor and rotary electric machine with the same |
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CN206471944U (en) * | 2017-02-17 | 2017-09-05 | 安徽美芝制冷设备有限公司 | The rotor assembly of compressor, the electric machine assembly of compressor and compressor |
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