CN106487134A - Motor rotor construction and magneto - Google Patents
Motor rotor construction and magneto Download PDFInfo
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- CN106487134A CN106487134A CN201510559553.5A CN201510559553A CN106487134A CN 106487134 A CN106487134 A CN 106487134A CN 201510559553 A CN201510559553 A CN 201510559553A CN 106487134 A CN106487134 A CN 106487134A
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- permanent magnet
- magnet trough
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- sections
- motor rotor
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 230000005389 magnetism Effects 0.000 claims description 8
- 230000005347 demagnetization Effects 0.000 abstract description 31
- 230000004907 flux Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention provides a kind of motor rotor construction, including rotor core, rotor core is provided with multiple permanent magnet trough groups, multiple permanent magnet trough groups are evenly distributed on the central axis the week side of boss of rotor core, each permanent magnet trough group is in the U-shaped or V-type towards rotor core periphery circle for the opening, setting permanent magnet in each permanent magnet trough group, each permanent magnet trough group includes at least two sections permanent magnet trough being sequentially connected, arrange between two sections of adjacent permanent magnet trough every magnetic bridge, the both ends of permanent magnet trough group are also provided with every magnetic bridge.Further relate to a kind of magneto.The motor rotor construction of the present invention and magneto, each permanent magnet trough group includes at least two sections permanent magnet trough being sequentially connected, arrange every magnetic bridge between two sections of adjacent permanent magnet trough, the both ends of permanent magnet trough group are also provided with every magnetic bridge, because the magnetic resistance at magnetic bridge is less than the magnetic resistance of permanent magnet portion, demagnetization magnetic flux will have major part by every magnetic bridge, effectively increasing the anti-demagnetization capability of motor.
Description
Technical field
The present invention relates to technical field of motors, more particularly, to a kind of motor rotor construction and magneto.
Background technology
The magneto of prior art, near the both ends of permanent magnet, magnetic resistance is little, holds on permanent magnet both ends
Easily concentrate the counter magnetic field of the coil effect of stator, permanent magnet both ends occur seriously subtracting magnetic so that torque reduces,
Even more so that motor can not normal work.
Content of the invention
In view of the present situation of prior art, it is an object of the invention to provide a kind of motor rotor construction and Permanent Magnet and Electric
Machine, each permanent magnet trough group includes at least two sections permanent magnet trough being sequentially connected, adjacent two sections of permanent magnet trough
Between arrange every magnetic bridge, the both ends of permanent magnet trough group are also provided with every magnetic bridge, due to the magnetic at magnetic bridge
Resistance will have major part by every magnetic bridge, changing demagnetized field less than the magnetic resistance of permanent magnet portion, demagnetization magnetic flux
Magnetic potential circulating direction, the demagnetization magnetic potential acting on permanent magnet is obviously reduced, and effectively increases the anti-of motor
Demagnetization capability.For achieving the above object, technical scheme is as follows：
A kind of motor rotor construction, including rotor core, described rotor core is provided with multiple permanent magnet trough groups,
Multiple described permanent magnet trough groups are evenly distributed on the central axis the week side of boss of described rotor core, each described permanent magnetism
Body groove group is in the U-shaped or V-type towards described rotor core periphery circle for the opening, in each described permanent magnet trough group
Setting permanent magnet, each described permanent magnet trough group includes at least two sections permanent magnet trough being sequentially connected, adjacent
Arrange every magnetic bridge between two sections of described permanent magnet trough, the both ends of described permanent magnet trough group are also provided with every magnetic
Bridge.
Wherein in an embodiment, described permanent magnet trough group is in that opening is U-shaped towards rotor core periphery circle,
Each described permanent magnet trough group is formed by three sections of permanent magnet trough being sequentially connected, and the permanent magnet trough of interlude is
Arcuate structure, the permanent magnet trough of head and the tail section is all square structure or class square structure.
Wherein in an embodiment, setting arc-shaped permanent magnet, described head in the permanent magnet trough of described interlude
It is respectively provided with square permanent magnet in the permanent magnet trough of rear.
Wherein in an embodiment, the permanent magnet trough edge of described head and the tail section also sets up bevelled edge, described
Bevelled edge is located at the opening inner side of described permanent magnet trough group, and is placed in the end of described permanent magnet trough group, described
Square permanent magnet in the permanent magnet trough of head and the tail section is also correspondingly arranged bevelled edge.
Wherein in an embodiment, vertical at described bevelled edge top to permanent magnet trough centrage rotor outer circle
Distance is b, and the width every magnetic bridge at described permanent magnet trough group two ends is c, wherein, 1.5≤b/c≤5.
Wherein in an embodiment, the mis-cut angle of described bevelled edge is θ, 150 °≤θ≤180 °
- 240/2p °, wherein, p is rotor number of pole-pairs, p >=6, and p is even number.
Wherein in an embodiment, vertical at described bevelled edge top to permanent magnet trough centrage rotor outer circle
Distance is b, and the width every magnetic bridge at described permanent magnet trough group two ends is c, the mis-cut angle of described bevelled edge
For θ, wherein, 1.5≤b/c≤5, -240/2p ° of 150 °≤θ≤180 °, p is rotor number of pole-pairs, p
>=6, and p is even number.
Wherein in an embodiment, the permanent magnet trough width of described head and the tail section is more than the permanent magnetism of described interlude
Body well width.
Wherein in an embodiment, in same described permanent magnet trough group, adjacent two sections of described permanent magnet trough
Between every magnetic bridge width be a, the width every magnetic bridge at described permanent magnet trough group two ends be c, wherein, 1
≤a/c≤2.5.
Wherein in an embodiment, described permanent magnet trough group is in the V towards described rotor core periphery circle for the opening
Type, each described permanent magnet trough group is formed by two sections of permanent magnet trough being sequentially connected, two sections of described permanent magnets
Groove is all square structure or class square structure, is respectively provided with square permanent magnet in two sections of described permanent magnet trough.
Further relate to a kind of magneto, including the motor rotor construction described in any of the above-described technical scheme.
The invention has the beneficial effects as follows：
The motor rotor construction of the present invention and magneto, each permanent magnet trough group includes at least two sections and connects successively
The permanent magnet trough connecing, is arranged every magnetic bridge, the both ends of permanent magnet trough group between two sections of adjacent permanent magnet trough
It is provided with every magnetic bridge, because the magnetic resistance at magnetic bridge is less than the magnetic resistance of permanent magnet portion, demagnetization magnetic flux will have
Major part is by every magnetic bridge, changing the magnetic potential circulating direction of demagnetized field, acting on the demagnetization on permanent magnet
Magnetic potential is obviously reduced, and effectively increases the anti-demagnetization capability of motor.
Brief description
Fig. 1 is the structural representation of the motor rotor construction embodiment one of the present invention；
Fig. 2 is the motor rotor construction schematic diagram shown in Fig. 1 with size marking；
Fig. 3 is the structural representation of the motor rotor construction embodiment two of the present invention；
Fig. 4 is the structural representation of the motor rotor construction embodiment three of the present invention；
Fig. 5 is the structural representation of the motor rotor construction example IV of the present invention；
Fig. 6 is that the motor rotor construction of prior art is right with the motor rotor construction emulation of one embodiment of the invention
Compare result figure.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing and reality
Apply example the motor rotor construction of the present invention and magneto are further elaborated.It should be appreciated that this
The described specific embodiment in place is only used for explaining the present invention, is not intended to limit the present invention.
Referring to figs. 1 to Fig. 5, the motor rotor construction of one embodiment of the invention, including rotor core 100, turn
Sub- iron core 100 is provided with multiple permanent magnet trough groups, and multiple permanent magnet trough groups are evenly distributed on rotor core 100
Central axis the week side of boss, each permanent magnet trough group be in opening towards rotor core 100 periphery circle U-shaped or V
Type, setting permanent magnet 200 in each permanent magnet trough group, each group permanent magnet 200 is in the circumference of rotor core 100
Direction is in that N, S are alternately arranged.Six permanent magnet trough groups are arranged in figure rotor core 100.
Each permanent magnet trough group includes at least two sections permanent magnet trough being sequentially connected 101, adjacent two sections of permanent magnets
Arrange every magnetic bridge 102 between groove 101, the both ends of permanent magnet trough group are also provided with every magnetic bridge 102.
Because the magnetic resistance at magnetic bridge is less than the magnetic resistance of permanent magnet portion, now, permanent magnet portion is equivalent to sky
Gas, when motor occurs demagnetization, demagnetization magnetic flux can pass through along the minimum path of magnetic resistance, and demagnetization magnetic flux will have
Major part is by every magnetic bridge, changing the magnetic potential circulating direction of demagnetized field, acting on the demagnetization on permanent magnet
Magnetic potential is obviously reduced, and effectively increases the anti-demagnetization capability of motor.
Embodiment one
As depicted in figs. 1 and 2, permanent magnet trough group is in that opening is U-shaped towards rotor core 100 periphery circle,
Each permanent magnet trough group is formed by three sections of permanent magnet trough being sequentially connected 101, the permanent magnet trough 101 of interlude
For arcuate structure, the permanent magnet trough 101 of head and the tail section is all square structure or class square structure.
Wherein, setting arc-shaped permanent magnet 200 in the permanent magnet trough 101 of interlude, the permanent magnet trough of head and the tail section
It is respectively provided with square permanent magnet 200 in 101.In same permanent magnet trough group, due to the permanent magnet trough 101 of interlude
It is respectively provided with every magnetic bridge 102 and the permanent magnet trough 101 of head and the tail section between, thus arc-shaped permanent magnet 200 is with direction forever
Isolated by every magnetic bridge 102 between magnet 200, every magnetic bridge 102 as guiding demagnetization magnetic circuit.
Preferably, in same permanent magnet trough group, two square permanent magnet 200 opposing arcuate permanent magnets 200
Centrage is symmetrical arranged.
As a kind of embodiment, in same permanent magnet trough group, between adjacent two sections of permanent magnet trough 101
Every magnetic bridge 102 width be a, the width every magnetic bridge 102 at permanent magnet trough group two ends be c, wherein, 1
≤a/c≤2.5.
During design 1≤a/c≤2.5, can obvious demagnetization magnetic potential on permanent magnet magnetization for the weakening effect, and then
Reduce the area that permanent magnet demagnetizes to below flex point, improve the anti-demagnetization capability of permanent magnet.Using the present embodiment
The area that demagnetizes to below flex point of magnet steel significantly reduce, compared to prior art, the present embodiment calculates
Motor demagnetization current improves more than 32%.
Obviously, in each permanent magnet trough group, permanent magnet can be set in arbitrary permanent magnet trough；Or,
Permanent magnet can be set in any two permanent magnet trough.It is not provided with can filling in the permanent magnet trough 101 of permanent magnet
Air dielectric or/and nonmagnetic substance.
Embodiment two
As shown in figure 3, the present embodiment is with the difference of embodiment one：In same permanent magnet trough group, first
Permanent magnet trough 101 edge of rear also sets up bevelled edge, and described bevelled edge is located at described permanent magnet trough group
Opening inner side, and it is placed in the end of described permanent magnet trough group, the side in the permanent magnet trough 101 of described head and the tail section
Shape permanent magnet 200 is also correspondingly arranged bevelled edge.
Preferably, the centrage pair of the bevelled edge opposing arcuate permanent magnet 200 of the permanent magnet trough 101 of head and the tail section
Claim setting.
Setting bevelled edge, can effectively guide demagnetization magnetic potential towards the less rotor core of magnetic resistance 100 excircle part
Pass through at magnetic bridge 102, that is, guiding demagnetization magnetic potential is logical at magnetic bridge 102 towards permanent magnet trough group both ends
Cross.So improve the anti-demagnetization capability of motor further.
It is preferred that the vertical dimension at permanent magnet trough 101 centrage rotor outer circle for the bevelled edge top is b, forever
The width every magnetic bridge 102 at magnet slot group two ends is c, wherein, 1.5≤b/c≤5.Permanent magnet herein
Refer at groove 101 centrage rotor outer circle：Symmetrical center line near the rotor core 101 of described bevelled edge
With the intersection near rotor core 101 periphery of described bevelled edge circle.
Wherein, the mis-cut angle of bevelled edge is θ, -240/2p ° of 150 °≤θ≤180 °, and wherein, p is
Number of pole-pairs, p >=6, and p are even number.The mis-cut angle of bevelled edge refers to bevelled edge and direction permanent magnet 200
The angle of become obtuse angle angle between minor face (side on width).
The motor rotor construction of the present embodiment, the demagnetization area of permanent magnet will reduce, and improves permanent magnetism further
The anti-demagnetization capability of body.
Embodiment three
As shown in figure 4, the present embodiment is with the difference of embodiment one：In same permanent magnet trough group, first
Permanent magnet trough 101 width of rear is more than permanent magnet trough 101 width of interlude.That is, square permanent magnet 200
Width be more than arc-shaped permanent magnet 200 width.Now, square permanent magnetism body thickness (width of in figure) increases
Greatly, same demagnetization magnetic potential acts on permanent magnet 200, and the area due to permanent magnet 200 increases, permanent magnetism
The area to below flex point for the demagnetization of body will reduce, and equally can improve the anti-demagnetization energy of permanent magnet further
Power.
In the present embodiment, permanent magnet trough 101 edge of head and the tail section may also be employed the bevelled edge in embodiment two
Design, the square permanent magnet 200 in the permanent magnet trough 101 of head and the tail section is also correspondingly arranged bevelled edge.Preferably,
The centrage of the bevelled edge opposing arcuate permanent magnet 200 of the permanent magnet trough 101 of head and the tail section is symmetrical arranged.
Setting bevelled edge, can effectively guide demagnetization magnetic potential towards the less rotor core of magnetic resistance 100 excircle part
Pass through at magnetic bridge 102, that is, guiding demagnetization magnetic potential is logical at magnetic bridge 102 towards permanent magnet trough group both ends
Cross, improve the anti-demagnetization capability of motor further.
Example IV
As shown in figure 5, each permanent magnet trough group is in the V-type towards rotor core 100 periphery circle for the opening, often
Individual permanent magnet trough group is formed by two sections of permanent magnet trough being sequentially connected 101, adjacent two sections of permanent magnet trough 101
Between every magnetic bridge 102, two sections of permanent magnet trough 101 are all square structure or class square structure, two sections of permanent magnets
It is respectively provided with square permanent magnet 200, the V-shaped arrangement of two square permanent magnets 200 in groove 101.By permanent magnet trough
Group is designed to V-type, it is possible to reduce permanent magnet quantity, reduces complex process degree.
In the present embodiment, two sections of permanent magnet trough 101 also all can be using the bevelled edge design in embodiment two.Two
Square permanent magnet 200 in section permanent magnet trough 101 is also correspondingly arranged bevelled edge.Preferably, two sections of permanent magnets
The footpath of the bevelled edge relative rotor iron core 100 of groove 101 is symmetrical arranged to the midline.
Certainly, any one section in two sections of permanent magnet trough 101 can be using the bevelled edge design in embodiment two.
Bevelled edge is also correspondingly arranged using the square permanent magnet 200 in the permanent magnet trough 101 of bevelled edge design.
Setting bevelled edge, the demagnetization area of permanent magnet will reduce, and improves the anti-demagnetization energy of permanent magnet further
Power.
Embodiment five
The present invention also provides a kind of magneto, including the motor rotor construction described in any one technical scheme,
Magneto is prior art in addition to above-mentioned motor rotor construction, and here is omitted.Magneto due to
Using above-mentioned motor rotor construction, therefore also achieve same Advantageous Effects.
The motor rotor construction of various embodiments above and magneto, each permanent magnet trough group includes at least two sections
The permanent magnet trough being sequentially connected, arranges every magnetic bridge between two sections of adjacent permanent magnet trough, and the two of permanent magnet trough group
End is also provided with every magnetic bridge, and because the magnetic resistance at magnetic bridge is less than the magnetic resistance of permanent magnet portion, demagnetize magnetic
Logical will have major part by every magnetic bridge, changing the magnetic potential circulating direction of demagnetized field, acting on permanent magnet
Demagnetization magnetic potential be obviously reduced, effectively increase the anti-demagnetization capability of motor.Rotor structure of the present invention is compared existing
There is technology can effectively reduce the demagnetized field acting on permanent magnet, improve the demagnetization current of motor, realize
The height anti-demagnetization design of motor.By contrasting with existing magneto, prior art motor demagnetization current
For 25A, the motor demagnetization current of above example can reach 33A, compared to prior art, permanent magnetism of the present invention
The demagnetization current of motor improves more than 32%, and the anti-demagnetization capability of motor is obviously improved.As shown in fig. 6, Fig. 6
Motor rotor construction for prior art and the motor rotor construction simulation comparison result of one embodiment of the invention
Figure, wherein, in Fig. 6, left side analogous diagram is the motor rotor construction analogous diagram of prior art, right side in Fig. 6
Analogous diagram is the motor rotor construction analogous diagram of one embodiment of the invention.Two pieces of right side in the analogous diagram of left side is forever
Magnet is the permanent magnet after identified demagnetization, and the most dark positional representation of the permanent magnet after identified demagnetization is
The area of the permanent magnet demagnetizing to below flex point；Two pieces of right side permanent magnet in the analogous diagram of right side is identified
Permanent magnet after demagnetization, the most dark positional representation of the permanent magnet after identified demagnetization is demagnetization to below flex point
Permanent magnet area.The rotor of one embodiment of the invention is can be seen that from simulation comparison result figure
The area that the permanent magnet of structure demagnetizes to below flex point significantly reduces, and anti-demagnetization capability significantly improves.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, can also make some deformation and
Improve, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is defined.
Claims (11)
1. a kind of motor rotor construction is it is characterised in that include rotor core (100), described rotor core
(100) it is provided with multiple permanent magnet trough groups, multiple described permanent magnet trough groups are evenly distributed on described rotor core
(100) central axis the week side of boss, each described permanent magnet trough group is in opening towards described rotor core (100)
The U-shaped or V-type of periphery circle, setting permanent magnet (200) in each described permanent magnet trough group, described in each forever
Magnet slot group includes at least two sections permanent magnet trough being sequentially connected (101), adjacent two sections of described permanent magnet trough
(101) arrange every magnetic bridge (102) between, the both ends of described permanent magnet trough group are also provided with every magnetic bridge
(102).
2. motor rotor construction according to claim 1 is it is characterised in that described permanent magnet trough group is in
Opening is U-shaped towards rotor core (100) periphery circle, and each described permanent magnet trough group is sequentially connected by three sections
Permanent magnet trough (101) formed, the permanent magnet trough (101) of interlude is arcuate structure, head and the tail section
Permanent magnet trough (101) is all square structure or class square structure.
3. motor rotor construction according to claim 2 is it is characterised in that the permanent magnetism of described interlude
In body groove (101), setting arc-shaped permanent magnet, is respectively provided with square in the permanent magnet trough (101) of described head and the tail section
Permanent magnet (200).
4. motor rotor construction according to claim 2 is it is characterised in that the permanent magnetism of described head and the tail section
Body groove (101) edge also sets up bevelled edge, and described bevelled edge is located at the opening inner side of described permanent magnet trough group,
And it is placed in the end of described permanent magnet trough group, the square permanent magnet in the permanent magnet trough (101) of described head and the tail section
(200) also it is correspondingly arranged bevelled edge.
5. motor rotor construction according to claim 4 is it is characterised in that described bevelled edge top is arrived
Vertical dimension at permanent magnet trough (101) centrage rotor outer circle be b, at described permanent magnet trough group two ends every
The width of magnetic bridge (102) is c, wherein, 1.5≤b/c≤5.
6. motor rotor construction according to claim 4 is it is characterised in that the cutting sth. askew of described bevelled edge
Angle is θ, -240/2p ° of 150 °≤θ≤180 °, and wherein, p is rotor number of pole-pairs, p >=6, and p
For even number.
7. motor rotor construction according to claim 4 is it is characterised in that described bevelled edge top is arrived
Vertical dimension at permanent magnet trough (101) centrage rotor outer circle be b, at described permanent magnet trough group two ends every
The width of magnetic bridge (102) is c, and the mis-cut angle of described bevelled edge is θ, wherein, 1.5≤b/c≤5,150 °
- 240/2p ° of≤θ≤180 °, p is rotor number of pole-pairs, p >=6, and p is even number.
8. the motor rotor construction according to any one of claim 2-7 is it is characterised in that described head and the tail
Permanent magnet trough (101) width of section is more than permanent magnet trough (101) width of described interlude.
9. the motor rotor construction according to any one of claim 2-7 is it is characterised in that in same institute
State in permanent magnet trough group, between adjacent two sections of described permanent magnet trough (101) every magnetic bridge (102) width be a,
The width every magnetic bridge (102) at described permanent magnet trough group two ends is c, wherein, 1≤a/c≤2.5.
10. motor rotor construction according to claim 1 is it is characterised in that described permanent magnet trough group
In opening towards the V-type of described rotor core (100) periphery circle, each described permanent magnet trough group is by two sections
The permanent magnet trough (101) being sequentially connected is formed, and two sections of described permanent magnet trough (101) are all square structure
Or class square structure, it is respectively provided with square permanent magnet (200) in two sections of described permanent magnet trough (101).
A kind of 11. magnetoes are it is characterised in that the motor including described in any one of claim 1-10 turns
Minor structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510559553.5A CN106487134B (en) | 2015-09-02 | 2015-09-02 | motor rotor structure and permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510559553.5A CN106487134B (en) | 2015-09-02 | 2015-09-02 | motor rotor structure and permanent magnet motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106487134A true CN106487134A (en) | 2017-03-08 |
| CN106487134B CN106487134B (en) | 2018-11-09 |
Family
ID=58238588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510559553.5A Active CN106487134B (en) | 2015-09-02 | 2015-09-02 | motor rotor structure and permanent magnet motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN106487134B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107394923A (en) * | 2017-08-30 | 2017-11-24 | 广东威灵电机制造有限公司 | Rotor core and rotor |
| CN110651412A (en) * | 2017-04-03 | 2020-01-03 | 动磁科技公司 | Rotor for an electric machine with internal permanent magnets |
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| CN205141858U (en) * | 2015-09-02 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Electric motor rotor structure and permanent -magnet machine |
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| CN103580321A (en) * | 2012-07-24 | 2014-02-12 | 广东美芝精密制造有限公司 | Permanent magnet motor rotor structure for compressor |
| CN202978479U (en) * | 2012-11-05 | 2013-06-05 | 艾默生环境优化技术(苏州)有限公司 | Motor rotor and motor and compressor comprising same |
| CN203747527U (en) * | 2013-02-14 | 2014-07-30 | 三菱电机株式会社 | Permanent magnet embedded type motor, compressor and refrigeration air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110651412A (en) * | 2017-04-03 | 2020-01-03 | 动磁科技公司 | Rotor for an electric machine with internal permanent magnets |
| CN107394923A (en) * | 2017-08-30 | 2017-11-24 | 广东威灵电机制造有限公司 | Rotor core and rotor |
| CN107394923B (en) * | 2017-08-30 | 2020-03-06 | 广东威灵电机制造有限公司 | Rotor core and rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106487134B (en) | 2018-11-09 |
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