CN112713682B - Axial flux disc type motor rotor structure - Google Patents
Axial flux disc type motor rotor structure Download PDFInfo
- Publication number
- CN112713682B CN112713682B CN202011419820.6A CN202011419820A CN112713682B CN 112713682 B CN112713682 B CN 112713682B CN 202011419820 A CN202011419820 A CN 202011419820A CN 112713682 B CN112713682 B CN 112713682B
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- China
- Prior art keywords
- permanent magnet
- magnet steel
- rotor
- axial flux
- mounting hole
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- 230000004907 flux Effects 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 76
- 239000010959 steel Substances 0.000 claims abstract description 76
- 238000003754 machining Methods 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention relates to a motor rotor, in particular to an axial flux disc type motor rotor structure. An axial flux disc type motor rotor structure comprises a rotor support and permanent magnet steel, wherein a permanent magnet steel mounting hole is processed on the rotor support, and a circle of permanent magnet steel embedding groove is processed at the inner edge of the permanent magnet steel mounting hole; a circle of convex structure is arranged at the outer edge of the permanent magnet steel magnet and matched with the permanent magnet steel magnet embedded groove; so far, the rotor bracket and the permanent magnet magnetic steel are well matched and firmly formed into a whole to form a rotor structure for the axial flux motor. Compared with the traditional axial flux motor rotor structure, the axial flux motor rotor structure provided by the invention omits related fasteners such as bolts and the like, can obviously reduce the unbalance amount of the rotor structure, and effectively avoids the hidden danger of accidents caused by the fact that the related fasteners on the rotor fall off under the high-speed rotation of the motor.
Description
Technical Field
The invention relates to a motor rotor, in particular to an axial flux disc type motor rotor structure.
Background
The axial flux motor has a short axial dimension, and is widely applied to the fields of elevator traction machines, automobile driving motors, wind driven generators and the like. In order to improve the efficiency of the motor, the permanent magnet occupies a higher area in the whole axial flux motor rotor, and the operation reliability of the motor is directly influenced by the fixing mode of the magnetic steel on the rotor.
At present, the permanent magnet fixing mode on the permanent magnet rotor of the axial flux motor mainly adopts the technical scheme that magnetic steel is bonded on a rotor bracket, the magnetic steel is fixed on the rotor bracket by a bolt, and the magnetic steel is fixed on the rotor bracket by a pressing block. Because the magnetic steel and the rotor bracket on the rotor can generate loss in the working process of the motor, and in addition, the stator generates heat to influence the rotor, the scheme of fixing the magnetic steel by adopting a bonding method has the risk of falling after long-term operation. The method of adopting bolt fastening is because need install a plurality of bolts on the rotor, because the alternating force influence such as complicated electromagnetic force, centrifugal force, thermal stress is always along with in the motor operation in-process, if do not have reasonable installation technology bolt also to have the risk of droing in the installation bolt in-process.
Like patent No. CN201820402069.0, the name is fixed knot of magnet steel constructs in disk motor rotor subassembly, this patent the fixed knot of magnet steel constructs including rotor dish, a plurality of magnet steel, the holder among the disk motor rotor subassembly, the rotor dish surface is equipped with annular groove, annular groove outer lane interval is equipped with the breach, the magnet steel equipartition is located in the annular groove on rotor dish surface and the breach is aimed at to the clearance of adjacent magnet steel, the holder includes ring and a plurality of spoke, radially locate the ring outer lane along the ring in a plurality of spokes, the holder is located the rotor dish surface and the spoke is located the clearance of adjacent magnet steel, the spoke top is located the breach, the ring is located the inner circle of a plurality of magnet steels. The spoke of the retainer and the rotor disc are finally fastened by screws or bolts, and the risk of falling off exists in the long-term operation process of the motor if improper operation or irregular installation process operation exists.
Such as patent numbers: CN201220070852.4、Patent entitled disc Motor rotor，The disc type motor rotor structure comprises a disc-shaped rotor tray and a plurality of magnetic steels arranged on the rotor tray; an annular concave-convex rib is arranged on the outer ring of at least one end face of the rotor tray, and an annular dovetail groove is formed between the inner convex rib and the outer convex rib; the magnetic steel is in a fan shape, the radial section of the magnetic steel is in a dovetail shape matched with the dovetail groove, and the magnetic steel is annularly arranged in the dovetail groove; the inner convex rib is provided with a plurality of mounting notches for the magnetic steel to enter the dovetail groove, and the mounting notches are sealed by pressing blocks arranged in the mounting notches. Although this patent has saved mounting such as bolt, need compress tightly with the briquetting after the installation magnet steel, the final briquetting of its is fixed also a hidden danger to the motor if unreliable.
Disclosure of Invention
The invention aims to avoid the permanent magnet steel from being bonded with a fastener, glue and the like by the rotor of the axial flux disc type motor, and avoid the risk of the permanent magnet steel falling off from the rotor. In addition, the conventional disc type motor rotor permanent magnet assembly and fixing mode brings large unbalance amount, and the invention can greatly reduce the unbalance amount of the rotor.
The invention is realized by adopting the following technical scheme: an axial flux disc type motor rotor structure comprises a rotor support and permanent magnet steel, wherein a permanent magnet steel mounting hole is processed on the rotor support, and a circle of permanent magnet steel embedding groove is processed at the inner edge of the permanent magnet steel mounting hole; a circle of convex structure is arranged at the outer edge of the permanent magnet steel magnet and matched with the permanent magnet steel magnet embedded groove; so far, the rotor bracket and the permanent magnet magnetic steel are well matched and firmly formed into a whole to form a rotor structure for the axial flux motor.
According to the axial flux disc type motor rotor structure, the permanent magnet steel mounting holes are fan-shaped, and the permanent magnet steel is fan-shaped and corresponds to the rotor bracket mounting holes.
According to the axial flux disc type motor rotor structure, the permanent magnet steel embedded groove is located in the middle of the inner edge of the permanent magnet steel mounting hole, and the protruding structure is located in the middle of the outer edge of the permanent magnet steel.
In the axial flux disc type motor rotor structure, the rotor bracket is processed into a disc shape by adopting a non-magnetic stainless steel material machine.
According to the axial flux disc type motor rotor structure, the rotor support is provided with the fan-shaped mounting hole and the permanent magnet steel embedded groove which are dug out by the multi-shaft machining center in a machining mode.
According to the axial flux disc type motor rotor structure, the rotor support is used as a die, rare earth ingredients are smelted and powdered and then are placed into the fan-shaped mounting hole of the rotor support, and then the mixture is subjected to pressing, sintering and aging to form a circle of permanent magnet steel, so that the rotor support and the permanent magnet steel are tightly combined into an integral structure.
According to the axial flux disc type motor rotor structure, the integral structure is subjected to finish machining according to the matching requirement, and then N/S-level integral magnetization is performed on each fan-shaped permanent magnet steel according to the design requirement.
Compared with the traditional axial flux motor rotor structure, the axial flux motor rotor structure provided by the invention omits related fasteners such as bolts and the like, can obviously reduce the unbalance amount of the rotor structure, and effectively avoids the hidden danger of accidents caused by the fact that the related fasteners on the rotor fall off under the high-speed rotation of the motor.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural view of a rotor holder.
Fig. 4 is a schematic structural diagram of permanent magnet magnetic steel.
In the figure: 1-rotor support, 2-permanent magnet magnetic steel, 1.1-embedded groove of permanent magnet magnetic steel, and 2.1-convex structure.
Detailed Description
The invention relates to a rotor structure for an axial flux motor, which consists of a rotor bracket 1 and permanent magnet magnetic steel 2. A fan-shaped permanent magnet magnetic steel mounting hole is formed in the rotor bracket 1, and a permanent magnet magnetic steel embedding groove 1.1 is formed in the center of the fan-shaped hole. The permanent magnet magnetic steel 2 is in a fan shape corresponding to the mounting hole of the rotor bracket, a circle of protruding structures 2.1 are arranged at the center of the outer edge of the permanent magnet magnetic steel 2, and the protruding structures 2.1 are matched with the permanent magnet magnetic steel embedded grooves 1.1. So far, rotor bracket 1 and permanent magnet 2 both fine cooperation firmly form a whole, form the rotor structure who is used for axial flux motor.
In order to realize the rotor structure of the axial flux motor, the rotor bracket 1 and the permanent magnet magnetic steel 2 need to be manufactured and are in close fit.
The rotor bracket 1 can be processed into a circular ring shape by adopting a non-magnetic stainless steel material machine, and further can be processed and dug out a fan-shaped mounting hole and a permanent magnet steel embedded groove 1.1 by adopting equipment such as a multi-axis processing center and the like.
Further, the rotor support 1 is used as a mold, rare earth ingredients are smelted to prepare powder and then are placed into the fan-shaped holes of the rotor support 1 to be pressed, sintered and aged, and a circle of permanent magnet steel 2 is formed, so that the rotor support 1 and the permanent magnet steel 2 are tightly combined into an integral structure.
Further, after finishing the finish machining according to the matching requirement, the integral structure formed by the method is subjected to N/S-level integral magnetizing according to the design requirement on each fan-shaped permanent magnet magnetic steel 2. To this end, the rotor overall structure for an axial flux motor is completed.
Claims (5)
1. The utility model provides an axial flux disk motor rotor structure which characterized in that: the permanent magnet motor comprises a rotor support (1) and permanent magnet steel (2), wherein a permanent magnet steel mounting hole is processed on the rotor support (1), and a circle of permanent magnet steel embedding groove (1.1) is processed at the inner edge of the permanent magnet steel mounting hole; a circle of protruding structures (2.1) are arranged on the outer edge of the permanent magnet steel (2), the protruding structures (2.1) are matched with the permanent magnet steel embedding grooves (1.1), the permanent magnet steel embedding grooves (1.1) are located in the middle of the inner edge of the permanent magnet steel mounting hole, the protruding structures (2.1) are located in the middle of the outer edge of the permanent magnet steel (2), the rotor support (1) is used as a mold, rare earth ingredients are placed into the fan-shaped permanent magnet steel mounting hole of the rotor support (1) after being smelted and pulverized and then are pressed, sintered and aged to form a circle of permanent magnet steel (2), and thus the rotor support (1) and the permanent magnet steel (2) are tightly combined into an integral structure.
2. The axial flux disc motor rotor structure of claim 1, wherein: the permanent magnet steel mounting hole is fan-shaped, and the permanent magnet steel (2) is of a fan-shaped structure corresponding to the permanent magnet steel mounting hole of the rotor bracket (1).
3. The axial flux disc motor rotor structure of claim 2, wherein: the rotor bracket (1) is processed into a disc shape by adopting a non-magnetic stainless steel material machine.
4. The axial flux disc motor rotor structure of claim 3, wherein: the rotor support (1) adopts a multi-shaft machining center to machine and dig out fan-shaped permanent magnet steel magnet mounting holes and permanent magnet steel magnet embedded grooves (1.1).
5. The axial flux disc motor rotor structure of claim 4, wherein: and after finishing the finish machining of the integral structure according to the matching requirement, carrying out N/S pole integral magnetization on each fan-shaped permanent magnet steel (2) according to the design requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011419820.6A CN112713682B (en) | 2020-12-07 | 2020-12-07 | Axial flux disc type motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011419820.6A CN112713682B (en) | 2020-12-07 | 2020-12-07 | Axial flux disc type motor rotor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112713682A CN112713682A (en) | 2021-04-27 |
| CN112713682B true CN112713682B (en) | 2022-08-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011419820.6A Active CN112713682B (en) | 2020-12-07 | 2020-12-07 | Axial flux disc type motor rotor structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN112713682B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023113755A1 (en) * | 2023-05-25 | 2024-11-28 | Schaeffler Technologies AG & Co. KG | magnetic element, rotor and axial flux machine |
| FR3153478A1 (en) * | 2023-09-26 | 2025-03-28 | IFP Energies Nouvelles | Rotor for axial flux electric machine with reduced section radial arm portion |
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| JP2006304539A (en) * | 2005-04-22 | 2006-11-02 | Nissan Motor Co Ltd | Rotor structure of axial gap rotating electric machine |
| JP2006304532A (en) * | 2005-04-22 | 2006-11-02 | Nissan Motor Co Ltd | Rotor structure of axial gap rotating electric machine |
| CN201118412Y (en) * | 2007-07-11 | 2008-09-17 | 张习斌 | A whole permanent magnetic disk for manufacturing electromotor |
| CN101803157A (en) * | 2007-09-14 | 2010-08-11 | 信越化学工业株式会社 | Permanent magnet rotating machine |
| CN102035280A (en) * | 2009-09-29 | 2011-04-27 | 深圳华任兴科技有限公司 | Disk-shaped rotor structure of permanent-magnet axial magnetic field motor, assembling and forming method and punching clamp |
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| CN111211630A (en) * | 2020-01-21 | 2020-05-29 | 杭州中豪电动科技有限公司 | Disk type motor rotor |
| CN111917266A (en) * | 2020-08-03 | 2020-11-10 | 深圳市恒驱电机股份有限公司 | An ironless ultra-thin axial motor rotor structure, stator structure and disc motor |
-
2020
- 2020-12-07 CN CN202011419820.6A patent/CN112713682B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006042535A (en) * | 2004-07-28 | 2006-02-09 | Toyota Central Res & Dev Lab Inc | Stator for rotating electric machine and method for manufacturing the same |
| JP2006304539A (en) * | 2005-04-22 | 2006-11-02 | Nissan Motor Co Ltd | Rotor structure of axial gap rotating electric machine |
| JP2006304532A (en) * | 2005-04-22 | 2006-11-02 | Nissan Motor Co Ltd | Rotor structure of axial gap rotating electric machine |
| CN201118412Y (en) * | 2007-07-11 | 2008-09-17 | 张习斌 | A whole permanent magnetic disk for manufacturing electromotor |
| CN101803157A (en) * | 2007-09-14 | 2010-08-11 | 信越化学工业株式会社 | Permanent magnet rotating machine |
| CN102035280A (en) * | 2009-09-29 | 2011-04-27 | 深圳华任兴科技有限公司 | Disk-shaped rotor structure of permanent-magnet axial magnetic field motor, assembling and forming method and punching clamp |
| CN202651933U (en) * | 2012-07-12 | 2013-01-02 | 深圳市乐丰科技有限公司 | Rotor assembly used on disc type electric machine |
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| CN207200410U (en) * | 2017-08-31 | 2018-04-06 | 杭州中豪电动科技股份有限公司 | A kind of rotor magnetic steel fixed structure of disc type electric machine |
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| CN208923940U (en) * | 2018-11-16 | 2019-05-31 | 核心驱动科技（金华）有限公司 | A kind of rotor structure and disc type electric machine |
| CN110350747A (en) * | 2019-03-08 | 2019-10-18 | 贵州航天林泉电机有限公司 | A kind of axial-flux electric machine rotor structure |
| CN210577998U (en) * | 2019-11-22 | 2020-05-19 | 山东中瑞电子股份有限公司 | Magnetic steel, rotor assembly and axial magnetic field motor |
| CN111211630A (en) * | 2020-01-21 | 2020-05-29 | 杭州中豪电动科技有限公司 | Disk type motor rotor |
| CN111917266A (en) * | 2020-08-03 | 2020-11-10 | 深圳市恒驱电机股份有限公司 | An ironless ultra-thin axial motor rotor structure, stator structure and disc motor |
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| Publication number | Publication date |
|---|---|
| CN112713682A (en) | 2021-04-27 |
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