CN107370265A - Skewed pole rotor iron core and its core stamping, skewed pole rotor and motor - Google Patents
Skewed pole rotor iron core and its core stamping, skewed pole rotor and motor Download PDFInfo
- Publication number
- CN107370265A CN107370265A CN201710538258.0A CN201710538258A CN107370265A CN 107370265 A CN107370265 A CN 107370265A CN 201710538258 A CN201710538258 A CN 201710538258A CN 107370265 A CN107370265 A CN 107370265A
- Authority
- CN
- China
- Prior art keywords
- core
- pole rotor
- axially extending
- skewed pole
- stamping
- Prior art date
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Classifications
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
Abstract
The invention discloses a kind of skewed pole rotor iron core and its core stamping, skewed pole rotor and motor, skewed pole rotor iron core includes：Multiple core packets, multiple core packets are coaxially set gradually, each core packet includes multiple axially stacked core stampings, the periphery of each core stamping is multiple circumferentially distributed along its along having, outwardly male part, be provided with each core stamping it is multiple along its it is circumferentially-spaced open and with the one-to-one axially extending bore of multiple male parts, each male part and each axially extending bore are asymmetric in the circumference of core packet, male part and axially extending bore difference on each core packet is overlapping, male part and axially extending bore on multiple core packets stagger respectively in the circumference of core packet and the axially extending bore on multiple core packets overlaps to form axially extending magnet slot along core packet；Multiple permanent magnets, multiple permanent magnets are corresponded and are plugged in multiple magnet slots.Skewed pole rotor iron core according to embodiments of the present invention has good oblique pole effect and good manufacturability.
Description
Technical field
The present invention relates to technical field of motors, more particularly, to a kind of skewed pole rotor iron core and skewed pole rotor iron core
Core stamping and skewed pole rotor and motor with the skewed pole rotor iron core.
Background technology
Motor particularly magneto can produce the air gap harmonic wave of complexity due to channel opening, local saturation, and then
Induced voltage harmonic wave and torque pulsation are produced, is unfavorable for the steady control and operation of motor.The generally use in practice process
The mode of rotor chute weakens the influence of air gap harmonic wave.For built-in type permanent-magnet (IPM) rotor due to the particularity of its structure,
It is typically only capable to carry out oblique pole in the form of permanent magnet and rotor core are segmented respectively, its manufacturability is poor, is unfavorable for extensive
The lifting of production efficiency.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention proposes one kind tiltedly
Pole rotor core, the skewed pole rotor iron core have good oblique pole effect and good manufacturability.
The invention also provides a kind of skewed pole rotor with above-mentioned skewed pole rotor iron core.
The invention also provides a kind of motor with above-mentioned skewed pole rotor.
The invention also provides a kind of core stamping of skewed pole rotor iron core.
Skewed pole rotor iron core according to embodiments of the present invention, including：Multiple core packets, multiple core packets are coaxial successively
Set, each core packet includes multiple axially stacked core stampings, and the middle part of each core stamping is provided with through hole, each
The periphery of the core stamping is multiple along its circumferentially distributed, outwardly male part along having, in each core stamping
Provided with it is multiple along its it is circumferentially-spaced open, the periphery of the neighbouring core stamping is along and with multiple one-to-one axles of male part
To through hole, each male part and each axially extending bore are asymmetric in the circumference of core packet, described outer on each core packet
Convex portion and axially extending bore difference are overlapping, week of the male part and axially extending bore on multiple core packets in the core packet
Stagger respectively upwards and the axially extending bore on multiple core packets overlaps to form axially extending magnetic along the core packet
Body groove；Multiple permanent magnets, multiple permanent magnets, which correspond, to be plugged in multiple magnet slots.
Skewed pole rotor iron core according to embodiments of the present invention not only has good oblique pole effect but also good manufacturability.
In addition, skewed pole rotor iron core according to the above embodiment of the present invention can also have technical characteristic additional as follows：
According to some embodiments of the present invention, at least a portion of the axially extending bore is located in the male part.
In the skewed pole rotor iron core of one embodiment of the invention, the axial cross section of the permanent magnet is formed as square.
Alternatively, the axial cross section of the permanent magnet is formed as strip, and the length direction of the strip is perpendicular to institute
State the radial direction of core packet or radially extending along core packet.
In some embodiments of the invention, the axially extending bore is formed as strip and bearing of trend and the male part
Corresponding center of circle bisector of angle out of plumb.
Alternatively, the outer edge extension camber of the male part.
According to some embodiments of the present invention, the core packet is two, and the core stamping of two core packets is identical
And one of them is flipped up 180 degree relative to another axle in skewed pole rotor iron core.
Alternatively, the offset angular of the rotor punching of the two neighboring core packet is β/N, wherein, β is skewed-rotor angle
Degree, N are the quantity of the core packet.
Skewed pole rotor according to embodiments of the present invention, including skewed pole rotor iron core according to embodiments of the present invention.
Motor according to embodiments of the present invention, including skewed pole rotor according to embodiments of the present invention.
The core stamping of skewed pole rotor iron core according to embodiments of the present invention, the middle part of each core stamping, which is provided with, to be led to
Hole, the periphery edge of each core stamping have multiple male parts circumferentially distributed and outwardly along its, each iron
In core punching provided with it is multiple along its it is circumferentially-spaced open, the periphery of the neighbouring core stamping along and with multiple male parts one by one
The circumferential asymmetry of corresponding axially extending bore, each male part and corresponding axially extending bore along the core stamping.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structural representation of skewed pole rotor iron core according to embodiments of the present invention；
Fig. 2 is the fractionation schematic diagram of skewed pole rotor iron core according to embodiments of the present invention；
Fig. 3 is the structural representation of a core stamping of skewed pole rotor iron core according to embodiments of the present invention；
Fig. 4 is the structural representation of another core stamping of skewed pole rotor iron core according to embodiments of the present invention；
Fig. 5 is the stacking schematic diagram of two core stampings of skewed pole rotor iron core according to embodiments of the present invention.
Reference：
Skewed pole rotor iron core 100；
Core packet 10；Permanent magnet 20；
Core stamping 11；Through hole 101；Male part 102；Axially extending bore 103；Magnet slot 110；Axis hole 120.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings.Below with reference to
The embodiment of accompanying drawing description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention, ability
The those of ordinary skill in domain can carry out a variety of changes in the case where not departing from the principle and objective of the present invention to these embodiments
Change, change, replacing and modification, the scope of the present invention are limited by claim and its equivalent.
In the description of the invention, it is to be understood that term " length ", " interior ", " outer ", " axial direction ", " radial direction ", " week
To " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of and describe this hair
It is bright and simplify description, rather than instruction or imply that signified device or element must have specific orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Below with reference to the accompanying drawings skewed pole rotor iron core 100 according to embodiments of the present invention is described in detail.
Shown in reference picture 1- Fig. 5, skewed pole rotor iron core 100 according to an embodiment of the invention may include：Two iron cores
Section 10 and eight permanent magnets 20.Two core packets 10 can coaxially be set gradually, one it is preceding another in rear, two core packets 10
It can be connected with each other, can also be not attached to.Eight permanent magnets 20 are along the circumferentially distributed of core packet 10 and are plugged in core packet respectively
In 10, the rotor number of poles of the skewed pole rotor iron core 100 is eight.
Here, two core packets 10 and eight permanent magnets 20 are only described as example, in the present invention, for iron core
Section 10 and the quantity of permanent magnet 20 do not do it is specifically limited, can as the case may be, such as can be according to required rotor number of poles etc.
Specifically set.
Each core packet 10 may include the core stamping 11 of multiple axially stacked settings, that is to say, that each core packet 10
Including multiple core stampings 11, axially stacked setting of multiple core stampings 11 along core packet 10, here, the axial direction of core packet 10
The namely axial direction of skewed pole rotor iron core 100, and the axial direction of core stamping 11.
Core stamping 11 is described in detail below.Referring to figs. 1 to shown in Fig. 5, the middle part of each core stamping 11 is set
There is through hole 101, also, the through hole 101 on multiple core packets 10 can be laminated and be formed as axis hole 120, and rotating shaft can be installed to axis hole
In 120.The periphery edge of each core stamping 11 has multiple male parts 102, circumference of multiple male parts 102 along core stamping 11
It is distributed and outwardly, here, outwards can be understood as to the direction away from through hole 101, for example, male part 102 can edge
The radial direction of core stamping 11 extends to the direction away from through hole 101.
As shown in Figures 3 to 5, each core stamping 11 is provided with multiple axially extending bores 103, each edge of axially extending bore 103
Core stamping 11 corresponds axially through core stamping 11, multiple axially extending bores 103 with multiple male parts 102, axially logical
Hole 103 can be set adjacent to the periphery of core stamping 11 edge.Wherein, each male part 102 and each axially extending bore 103 are along core packet
10 circumferential asymmetry.In other words, each male part 102 (turns on the center of circle bisector of angle corresponding to the male part 102
Sub- pole-face center line, such as shown in Fig. 3 center lines A) asymmetric, each axially extending bore 103 is on the corresponding institute of male part 102
Corresponding center of circle bisector of angle is also asymmetric.
Wherein, the male part 102 on each core packet 10 and axially extending bore 103 are distinguished overlapping, i.e., on each core packet 10
Multiple male parts 102 overlap, multiple axially extending bores 103 on each core packet 10 overlap.Multiple iron cores
Male part 102 and axially extending bore 103 in section 10 distinguish stagger setting, and multiple core packets 10 in the circumference of core packet 10
On axially extending bore 103 overlap to form axially extending magnet slot 110 along core packet 10, as shown in Figure 5.
That is, the position point in the circumference of core packet 10 of multiple male parts 102 on same core packet 10
Not Dui Ying, can be completely superposed together, week of the multiple axially extending bores 103 on same core packet 10 in core packet 10
It can also be completely superposed upwards together.Male part 102 on different core packets 10 staggers in the circumference of core packet 10
Set, both differ certain angle, can partially overlap together, the axially extending bore 103 on different core packets 10
It can partially overlap and form magnet slot 110 together, magnet slot 110 is along core packet 10 axially through core packet 10, Duo Geyong
Magnet 20, which can correspond, to be plugged in multiple magnet slots 110.
Thus, above-mentioned dissymmetrical structure can make skewed pole rotor iron core 100 form good oblique pole effect, and tiltedly pole turns
Sub- iron core 100 can have the core packet 10 and the not permanent magnet 20 of subsection setup of subsection setup, and multiple core packets 10 can be with
A permanent magnet 20 is shared, the permanent magnet 20 is not reversed, is not segmented in the axial direction, can run through whole rotor core, the oblique pole
Rotor core 100 can also have manufacturability that is good and simplifying, be adapted to big while conventional segmented oblique pole effect is reached
Apply, can apply in various built-in type permanent-magnets (IPM) rotor structure in large-scale production.
Skewed pole rotor iron core 100 according to embodiments of the present invention, by setting the core packet 10 of segmentation and in each iron core
Circumferential asymmetric male part 102 and axially extending bore 103 are set in section 10, make the male part 102 and axle on multiple core packets 10
Partly overlapped in the circumferential to through hole 103 and the permanent magnet 20 not being segmented is plugged in the axially extending bore 103 of multiple core packets 10
It is interior so that skewed pole rotor iron core 100 can not only have good oblique pole effect but also good manufacturability.
As described above, the male part 102 and axially extending bore 103 on multiple core packets 10 are distinguished in the circumference of core packet 10
Stagger setting, thus, adjacent two core packets 10 can be formed as twist mode structure, i.e., one of them is relative to wherein another
Individual axial torsion certain angle, in this application, windup-degree can be configured as needed.Alternatively, the present invention's
In some embodiments, windup-degree can be β/N, and the rotor punching of the windup-degree namely two neighboring core packet 10 staggers
Angle, wherein, β is skewed-rotor angle, and N is the quantity of core packet 10, and β and N value can be had according to actual conditions
Body is set.Thus, skewed pole rotor iron core 100 is overall can have more excellent oblique pole effect, can significantly attenuate air gap harmonic wave
Influence.
According to some embodiments of the present invention, at least a portion of axially extending bore 103 may be provided in male part 102, also
It is to say, axially extending bore 103 is extended in male part 102.Thus, axially extending bore 103 and the correspondence of male part 102 are more preferable,
The oblique pole effect of skewed pole rotor iron core 100 can further be improved.Skewed pole rotor according to embodiments of the present invention is shown in Fig. 3
One embodiment of the core stamping 11 of iron core 100, in this embodiment, a part for axially extending bore 103 is arranged on male part
On 102, axially extending bore 103 is formed as strip and axial both ends are respectively adjacent to the edge setting of male part 102.Thus, axially
Through hole 103 it is relatively large sized, more conducively carry out overlapping to install permanent magnet 20, while material usage can be reduced.
Alternatively, the axial cross section of permanent magnet 20 is formed as square.Thus, not only it is more convenient for manufacturing and assembling, and
Magnetic property is good.Further, the axial cross section of permanent magnet 20 is formed as strip, for example, rectangle, alternatively, the length
The length direction of bar shaped can be perpendicular to the radial direction of core packet 10 or radially extending along core packet 10.Thus, it is possible to make oblique pole
Rotor core 100 has excellent magnetic property.For example, in the embodiment shown in Fig. 1 to 4, the length direction of strip is substantially
Perpendicular to the radial direction of core packet 10.
To ensure preferable excessive effects, shown in reference picture 3 to Fig. 5, in some embodiments of the invention, axially extending bore
103 be formed as the bearing of trend of strip and strip with corresponding to male part 102 center of circle bisector of angle (for example,
Line A shown in Fig. 3) out of plumb.Thus, it is possible to have when alloing the axially extending bore 103 of two core packets 10 overlapping bigger
Overlapping area, i.e. the size of magnet slot 110 is bigger, can form the installation of more regular shape, more conducively permanent magnet 20,
And the utilization rate of axially extending bore 103 is bigger.
Referring to figs. 1 to shown in Fig. 4, the outer edge of male part 102 may be extended to arc.Thus, male part 102 can be formed
For arc convex portion, the profile of skewed pole rotor iron core 100 is more regular, and magnetic property can be improved further.Alternatively, such as Fig. 3 and Fig. 4
It is shown, when male part 102 is formed as arc convex portion, one end of the outer edge of male part 102 can be made to be formed as big arc, it is another
End is formed as small arc, to realize preferably asymmetric effect.
In some embodiments of the invention, when core packet 10 is two, the core stamping 11 of two core packets 10 can
Turned with the core stamping 11 of identical and one of core packet 10 relative to the core stamping 11 of another core packet 10 in oblique pole
180 degree installation may be reversed in the axial direction of sub- iron core 100.By taking the embodiment shown in Fig. 1 to Fig. 5 as an example, pole core rotor main will
It is made up of two core packets 10 and permanent magnet 20, segments two, rotor number of poles is eight, and two core packets 10 are rushed by iron core respectively
Piece 11a and core stamping 11b assemble to be formed.Wherein, core stamping 11a is identical with core stamping 11b structure, and one of them is turned over
Turn 180 and be formed as other in which.That is, core stamping 11a and core stamping 11b can be regarded as same iron core
Punching.
When mounted, laminated iron core punching 11 can be distinguished and form two core packets 10, then by one of core packet
10 relative to axial turning 180 degree of another core packet 10 along skewed pole rotor iron core 100, then as needed by one of them
Core packet 10 rotates to an angle relative to another core packet 10, the axially extending bore 103 of two core packets 10 is realized part
It is overlapping, that is to say, that when two core packets 10 are axially drawn close, the installation through-hole 101 on two core packets 10 is right vertically
It is neat still to interlock in the presence of certain, and then permanent magnet 20 is plugged into two core packets 10, wherein, permanent magnet 20
Boundary dimensions it is good without departing from the border of axially extending bore 103 that each segmentation and core packet 10 are reserved, assembling.
Thus, pole wheel iron core can be manufactured using same core stamping 11, can use same secondary mould punching
Out, greatly save die cost and simplify mounting process, and pole wheel iron core 100 can realize more preferable asymmetry
Effect, oblique pole effect are more preferable.
In the present invention, after permanent magnet 20 is assembled in core packet 10, follow-up filler, injection or envelope can be carried out
If the subsequent machining operations such as end cap.When skewed pole rotor iron core 100 carry out filler operation after, axially extending bore 103 not by permanent magnet
20 parts occupied can be filled up by glue, when skewed pole rotor iron core 100 carry out injection operation after, axially extending bore 103 not by forever
The part that magnet 20 occupies can form moulding, can play preferable fixed effect to permanent magnet 20 and core packet 10.
Skewed pole rotor according to embodiments of the present invention includes skewed pole rotor iron core 100 according to embodiments of the present invention, due to
Skewed pole rotor iron core 100 according to embodiments of the present invention has above-mentioned beneficial technique effect, therefore according to embodiments of the present invention
Skewed pole rotor manufacturability it is preferable and oblique pole effect is good.
Motor according to embodiments of the present invention includes skewed pole rotor according to embodiments of the present invention, according to embodiments of the present invention
Motor also have preferable manufacturability and oblique pole effect it is good.
Other of skewed pole rotor iron core 100 according to embodiments of the present invention, skewed pole rotor and motor are formed and operation
It is knowable for the person of ordinary skill of the art, is not described in detail herein.
In the description of this specification, the description of reference term " embodiment " or " example " etc. mean to combine the embodiment or
Specific features, structure, material or the feature of example description are contained at least one embodiment or example of the present invention.At this
In specification, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, description is specific
Feature, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
Claims (11)
- A kind of 1. skewed pole rotor iron core, it is characterised in that including：Multiple core packets, multiple core packets are coaxially set gradually, and each core packet includes multiple axially stacked iron core punchings Piece, the middle part of each core stamping are provided with through hole, and the periphery of each core stamping is multiple along its circumference point along having Cloth, outwardly male part, be provided with each core stamping it is multiple along its it is circumferentially-spaced open, the neighbouring core stamping Periphery along and with multiple one-to-one axially extending bores of male part, each male part and each axially extending bore are in core packet Circumference on it is asymmetric, the male part and the axially extending bore on each core packet distinguish overlapping, multiple iron cores Male part and axially extending bore in section stagger respectively in the circumference of the core packet and the axial direction on multiple core packets leads to Hole overlaps to form the axially extending magnet slot along the core packet；Multiple permanent magnets, multiple permanent magnets, which correspond, to be plugged in multiple magnet slots.
- 2. skewed pole rotor iron core according to claim 1, it is characterised in that at least a portion of the axially extending bore is located at In the male part.
- 3. skewed pole rotor iron core according to claim 1, it is characterised in that the axial cross section side of being formed as of the permanent magnet Shape.
- 4. skewed pole rotor iron core according to claim 1, it is characterised in that the axial cross section of the permanent magnet is formed as long Bar shaped, the length direction of the strip is perpendicular to the radial direction of the core packet or radially extending along core packet.
- 5. skewed pole rotor iron core according to claim 1, it is characterised in that the axially extending bore is formed as strip and prolonged Stretch direction and the center of circle bisector of angle out of plumb corresponding to the male part.
- 6. skewed pole rotor iron core according to claim 1, it is characterised in that the outer edge of the male part extends into arc Shape.
- 7. skewed pole rotor iron core according to claim 1, it is characterised in that the core packet is two, two iron The core stamping of core section is identical and one of them is flipped up 180 degree relative to another axle in skewed pole rotor iron core.
- 8. skewed pole rotor iron core according to claim 1, it is characterised in that the rotor punching of the two neighboring core packet Offset angular be β/N, wherein, β is skewed-rotor angle, and N is the quantity of the core packet.
- 9. a kind of skewed pole rotor, it is characterised in that including the skewed pole rotor iron core any one of claim 1-8.
- 10. a kind of motor, it is characterised in that including the skewed pole rotor described in claim 9.
- A kind of 11. core stamping of skewed pole rotor iron core, it is characterised in that the middle part of each core stamping is provided with through hole, Along having multiple male parts circumferentially distributed and outwardly along its, each iron core rushes for the periphery of each core stamping In piece provided with it is multiple along its it is circumferentially-spaced open, the periphery of the neighbouring core stamping is corresponded along and with multiple male parts Axially extending bore, each male part and corresponding axially extending bore are along the circumferential asymmetric of the core stamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538258.0A CN107370265B (en) | 2017-07-04 | 2017-07-04 | Oblique-pole rotor iron core and iron core punching sheet thereof, oblique-pole rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710538258.0A CN107370265B (en) | 2017-07-04 | 2017-07-04 | Oblique-pole rotor iron core and iron core punching sheet thereof, oblique-pole rotor and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107370265A true CN107370265A (en) | 2017-11-21 |
| CN107370265B CN107370265B (en) | 2021-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710538258.0A Active CN107370265B (en) | 2017-07-04 | 2017-07-04 | Oblique-pole rotor iron core and iron core punching sheet thereof, oblique-pole rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107370265B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109861482A (en) * | 2018-12-29 | 2019-06-07 | 中国第一汽车股份有限公司 | A kind of used in new energy vehicles Rotor Assembly |
| CN111130238A (en) * | 2018-10-30 | 2020-05-08 | 广东威灵电机制造有限公司 | Motor rotor and motor |
| WO2023045264A1 (en) * | 2021-09-27 | 2023-03-30 | 佛山市威灵洗涤电机制造有限公司 | Rotor structure, electric motor structure, and electronic device |
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| CN103973008A (en) * | 2013-01-31 | 2014-08-06 | 山洋电气株式会社 | Rotor for permanent magnet type motor, method of manufacturing rotor for permanent magnet type motor, and permanent magnet type motor |
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| US6844652B1 (en) * | 2003-07-30 | 2005-01-18 | Powerplus Technology Corp. | Rotor structure of line-start permanent magnet synchronous motor |
| JP2008271652A (en) * | 2007-04-17 | 2008-11-06 | Mitsubishi Electric Corp | Permanent magnet type rotary electric machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111130238A (en) * | 2018-10-30 | 2020-05-08 | 广东威灵电机制造有限公司 | Motor rotor and motor |
| CN109861482A (en) * | 2018-12-29 | 2019-06-07 | 中国第一汽车股份有限公司 | A kind of used in new energy vehicles Rotor Assembly |
| WO2023045264A1 (en) * | 2021-09-27 | 2023-03-30 | 佛山市威灵洗涤电机制造有限公司 | Rotor structure, electric motor structure, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107370265B (en) | 2021-03-23 |
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