CN108390486A - A kind of disk type electric motor rotor magnetic steel fixed structure - Google Patents
A kind of disk type electric motor rotor magnetic steel fixed structure Download PDFInfo
- Publication number
- CN108390486A CN108390486A CN201810402134.4A CN201810402134A CN108390486A CN 108390486 A CN108390486 A CN 108390486A CN 201810402134 A CN201810402134 A CN 201810402134A CN 108390486 A CN108390486 A CN 108390486A
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- China
- Prior art keywords
- hole
- magnet steel
- interior
- carrier
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 81
- 239000010959 steel Substances 0.000 title claims abstract description 81
- 244000144985 peep Species 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims description 19
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention belongs to technical field of motors, more particularly, to a kind of disk type electric motor rotor magnetic steel fixed structure, including end cap and carrier, end cap is two, is respectively fixedly disposed at the both sides of carrier, and the center of end cap and carrier is all provided with axis placing hole, multiple magnet steel holes are uniformly arranged in the circumferential direction on carrier, magnet steel is set in magnet steel hole, the corresponding multiple peep holes in and position identical as magnet steel hole number are provided on end cap, the size of peep hole is less than the size in magnet steel hole.Manufacture craft of the present invention is simple, good convenient for the working condition and thermal diffusivity of observation magnet steel.
Description
Technical field
The invention belongs to technical field of motors, more particularly, to a kind of disk type electric motor rotor magnetic steel fixed structure.
Background technology
Disc type electric machine, can due to the features such as small, power density is high, axial dimension is short, Life cycle is at low cost
In majority there is slim mounting location to use, magnet steel fixation has vital work to motor even running and reliability
With.Traditional disk type electric motor rotor mostly uses greatly surface-mount type structure, and the magnet steel of this structure is pasted onto rotor surface, due to centrifugation
Force effect, surface-mount type structure can not be such that motor excessively high speed runs, limit the maximum speed of motor, reduce the property of motor
Energy.In addition, magnet steel is adhered to rotor surface, there are some potential safety problems, relationship pole of the glue due to the time for such method
It is also easy to produce rotten aging phenomenon, sticking strength is caused to decline to a great extent, magnet steel falls off in an axial direction.Also on this basis in magnet steel
The measures such as peripheral casting epoxy resin layer or winding of band-type coil will result in motor manufacturing process ratio in this way to fix magnet steel
The shortcomings of more complex, poor radiation, reduces the efficiency output of motor.
The patent document of notification number CN203289217U discloses a kind of disk type electric motor rotor, including rotor endcap, rotor iron
Core and permanent magnet and sheath, for covering rotor core and being fixedly connected with rotor core, rotor endcap is separate to be turned rotor endcap
The one side arching of sub- iron core is cyclic annular, and sheath is fixedly connected by being interference fitted with rotor endcap side wall and rotor core side wall;Rotor
The side wall of iron core is provided with several and is uniformly distributed permanent magnet trough for being embedded in permanent magnet, permanent magnet be embedded in permanent magnet trough and with turn
Son is fixedly connected;Interior air gap hole is equipped between the side wall each two permanent magnet trough of rotor core, rotor endcap is equipped with several
A equal with interior air gap hole number and matched outer gas lyriform pore.The side wall of the patent rotor core is opened up for being embedded in permanent magnet
Then permanent magnet trough makes permanent magnet be isolated from the outside world completely by sheath protection, manufacture craft is more complex, and is not easy to observe
The working condition of permanent magnet, while thermal diffusivity is poor.
The patent document of publication number 107591944A discloses a kind of disc type electric machine radiator structure, including:First end cover, including
The periphery of bottom plate and annular side plate, the annular side plate from the bottom plate extends outward, so that the first end cover is in basin
Shape is arranged, and the bottom plate is equipped with via, and the also projection of the inner surface of the end cap is convex around the annular installation of via setting
It rises, the first end cover is internally provided with the first cooling duct;Stator module is installed in the first end cover, and is set in institute
It states in annular installation protrusion;And heat-conducting glue, it is filled between the stator module and the internal face of the first end cover, uses
Conducting the heat of the stator module to the first cooling duct of the end cap.The heat conduction that the structure passes through end cap internal face
The heat that stator module generates is transmitted to by heat-conducting glue in the first end cover by glue, and then will by the first cooling duct
Heat is conducted to the external world, the conductive structure of indirect type, heat dissipation effect unobvious.
Invention content
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of disk type electric motor rotor magnet steel to consolidate
Determine structure, manufacture craft is simple, good convenient for the working condition and thermal diffusivity of observation magnet steel.
In order to achieve the above objectives, the present invention uses following technical scheme:
A kind of disk type electric motor rotor magnetic steel fixed structure, including end cap and carrier, the end cap are two, are fixedly installed respectively
In the both sides of carrier, the center of the end cap and carrier is all provided with axis placing hole, is circumferentially uniformly set on the carrier
Multiple magnet steel holes are set, magnet steel is set in the magnet steel hole, it is opposite to be provided with and position identical as magnet steel hole number on the end cap
The multiple peep holes answered, the size of the peep hole are less than the size in magnet steel hole.
Further, multiple interior heat emission holes are uniformly arranged in the circumferential direction on the carrier, the interior heat emission hole is located at axis hole
Between magnet steel hole, the corresponding multiple outer heat emission holes in and position identical as interior heat dissipation hole number are provided on the end cap.
Further, multiple interior heat emission holes include alternatively distributed multiple interior long heat emission holes and multiple interior short heat emission holes, institute
Outer heat emission hole is stated with the collocation of interior heat emission hole to be arranged.
Further, multiple interior air gap holes are uniformly arranged in the circumferential direction on the carrier, the interior air gap hole is located at adjacent
Between magnet steel hole, the corresponding outer gas lyriform pore in and position identical as interior air gap hole number is provided on the end cap.
Further, the interior air gap hole and the edge of outer gas lyriform pore are welded and fixed;The interior heat emission hole and outer heat emission hole
Edge be welded and fixed;The outer edge of the end cap is fixedly connected with the outer edge of carrier.
Further, the interior air gap hole includes along the radially-arranged interior long air gap hole of carrier and interior lyriform pore of losing heart, institute
It is rectangle to state interior long air gap hole and interior lyriform pore of losing heart.
Further, the end cap and carrier are all made of non-permeable material.
Further, the magnet steel hole is angularly disposed.
The beneficial effects of the invention are as follows:
1. by the way that peep hole is arranged on the one hand convenient for the working condition of observation magnet steel, on the other hand also allow for radiating;Peep hole
Size be less than magnet steel hole size, can effectively pre- antimagnetic steel in axial direction move.
2. magnet steel hole is set to carrier at the position of proximal edge, i.e., still there is a certain distance with the side wall of carrier,
It in magnet steel insertion magnet steel hole, will realize that the fixed effect of magnet steel, and Embedded structure, magnet steel can bear big centrifugation and make
Firmly, without using glue, winding of band-type coil or sheath, simplify production process, and prevent traditional structure magnet steel and fall off
The problem of.
3. by the combining of heat emission hole in setting and outer heat emission hole, the combination in interior air gap hole and outer gas lyriform pore, reinforce rotor
Thermal diffusivity in the course of work, at the same interior heat emission hole and outer heat emission hole, interior air gap hole and outer gas lyriform pore can be used single tool into
Row processing, can also mitigate the weight of carrier and end cap, make total lightweight, save drive energy;
4. when specific making, passing through the fixation that end cap and carrier are realized in the welding at three:First, interior air gap hole and outer gas lyriform pore
Edge be welded and fixed, second is that the edge of interior heat emission hole and outer heat emission hole is welded and fixed, third, the outer edge and carrier of end cap
Outer edge be welded and fixed, which makes carrier connect with end cap more stable on the basis of ensureing effectively heat dissipation,
Using the interior air gap hole of rectangular configuration and outer gas lyriform pore, it is effectively increased weld length, is conducive to structure and fixes.
5. magnet steel hole is angularly disposed, be conducive to improve motor torque ripple, reduce motor oscillating, reduction noise has centainly
Effect.
In conclusion the manufacture craft that the present invention has is simple, and can bear big operating on centrifugal force, have it is light-weight,
The good advantage of thermal diffusivity, substantially increases the rotating speed of motor trouble free service, improves the working performance of motor.
Description of the drawings
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the structure sectional view of carrier of the present invention;
Fig. 3 is the cross-sectional view of A-A in Fig. 1;
Fig. 4 is the comparison diagram in straight pole magnet steel hole and the hole torque of oblique pole magnet steel;
Fig. 5 is the counter potential waveform figure in straight pole magnet steel hole;
Fig. 6 is the counter potential waveform figure in oblique pole magnet steel hole.
Figure label:1- end caps, 2- carriers, 3- magnet steel, 4- axis holes, 5- magnet steel hole, heat emission hole in 6-, air gap in 7-
Hole, 8- peep holes, the outer heat emission holes of 9-, 10- outer gas lyriform pores.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in Figs. 1-3, the present invention includes end cap 1, carrier 2 and magnet steel 3, and end cap 1 and carrier 2 are all made of 316 not
Become rusty steel, and end cap 1 is two, is respectively welded the both sides for being fixed at carrier 2, and the center of end cap 1 and carrier 2 is all provided with
Axis placing hole 4 is uniformly arranged in the circumferential direction eight magnet steel holes 5 on carrier 2, and magnet steel hole 5 is oblique design, and magnet steel hole 5 is close to carrying
The edge of disk 2 is arranged, and magnet steel hole 5 is fan-like structure, and magnet steel 3 is embedded in magnet steel hole 5, and ten are uniformly arranged in the circumferential direction on carrier 2
Heat emission hole 6 in two groups, interior heat emission hole 6 is between axis hole 4 and magnet steel hole 5, and heat emission hole 6 includes alternatively distributed multiple in every group
Interior long heat emission hole and multiple interior short heat emission holes are uniformly arranged in the circumferential direction air gap hole 7 in eight groups on carrier 2, and interior air gap hole 7 is located at
Between adjacent magnet steel hole 5, in every group air gap hole 7 include along the radially-arranged interior long air gap hole of carrier and interior lyriform pore of losing heart, it is interior
Long air gap hole and interior lyriform pore of losing heart are rectangle;
The corresponding multiple peep holes 8 in and position identical as 5 quantity of magnet steel hole, the undersized of peep hole 8 are provided on end cap 1
Size in magnet steel hole 5 is provided with the corresponding multiple outer heat emission holes 9 in and position identical as 6 quantity of interior heat emission hole on end cap 1,
Interior heat emission hole 6 is identical with the structure of outer heat emission hole 9, is provided with that identical as interior 7 quantity of air gap hole and position is corresponding on end cap 1
Outer gas lyriform pore 10, interior air gap hole 7 are identical as the structure of outer gas lyriform pore 10.
Data analysis is carried out using ANSYS softwares, as shown in figure 4, turning using the tooth socket of the disc type electric machine in oblique pole magnet steel hole
The cogging torque of the disc type electric machine in moment ratio straight pole magnet steel hole is small, as shown in Figure 5 and Figure 6, using the disc type electric machine in oblique pole magnet steel hole
No-load back electromotive force Waveform sine it is better than the no-load back electromotive force Waveform sine of the disc type electric machine in straight pole magnet steel hole, this
Magnet steel hole 5 in embodiment is designed using oblique structure, is conducive to improve motor torque ripple, is reduced motor oscillating, is subtracted
Small noise has certain effect.
In the present embodiment, the fixed form between two end caps 1 and carrier 2 uses:Interior air gap hole 7 and outer gas lyriform pore 10
Adjacent edge is fixed using laser welding;Interior heat emission hole 6 and the adjacent edge of outer heat emission hole 9 are fixed using laser welding;End
The outer edge of lid 1 is fixedly connected with the outer edge of carrier 2 using laser.
A kind of assembly method of disk type electric motor rotor magnetic steel fixed structure of patent of the present invention:Magnet steel 3 is sequentially embedded first
In magnet steel hole 5, end cap 1 is then placed in 2 both ends of carrier, end cap 1 is carried out by way of laser welding and carrier 2 welds
It is fixed.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical scheme of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (9)
1. a kind of disk type electric motor rotor magnetic steel fixed structure, it is characterised in that:Including end cap and carrier, the end cap is two
It is a, it is respectively fixedly disposed at the both sides of carrier, the center of the end cap and carrier is all provided with axis placing hole, the carrier
On be uniformly arranged in the circumferential direction multiple magnet steel holes, magnet steel is set in the magnet steel hole, is provided with and magnet steel hole number on the end cap
The corresponding multiple peep holes in identical and position, the size of the peep hole are less than the size in magnet steel hole.
2. a kind of disk type electric motor rotor magnetic steel fixed structure according to claim 1, it is characterised in that:On the carrier
Multiple interior heat emission holes are uniformly arranged in the circumferential direction, the interior heat emission hole is provided between axis hole and magnet steel hole on the end cap
The corresponding multiple outer heat emission holes in identical and position with interior heat dissipation hole number.
3. a kind of disk type electric motor rotor magnetic steel fixed structure according to claim 2, it is characterised in that:Multiple interior heat emission holes
Including alternatively distributed multiple interior long heat emission holes and multiple interior short heat emission holes, the outer heat emission hole is arranged with the collocation of interior heat emission hole.
4. a kind of disk type electric motor rotor magnetic steel fixed structure according to claim 2, it is characterised in that:On the carrier
Be uniformly arranged in the circumferential direction multiple interior air gap holes, the interior air gap hole between adjacent magnet steel hole, be provided on the end cap with
Interior air gap hole number is identical and the corresponding outer gas lyriform pore in position.
5. a kind of disk type electric motor rotor magnetic steel fixed structure according to claim 4, it is characterised in that:The interior air gap hole
It is welded and fixed with the edge of outer gas lyriform pore;The edge of the interior heat emission hole and outer heat emission hole is welded and fixed;The outside of the end cap
Edge is fixedly connected with the outer edge of carrier.
6. a kind of disk type electric motor rotor magnetic steel fixed structure according to claim 4, it is characterised in that:The interior air gap hole
Including along the radially-arranged interior long air gap hole of carrier and interior lyriform pore of losing heart, the interior long air gap hole and interior lyriform pore of losing heart are square
Shape.
7. a kind of disk type electric motor rotor magnetic steel fixed structure according to claim 1, it is characterised in that:It the end cap and holds
Load plate is all made of non-permeable material.
8. a kind of disk type electric motor rotor magnetic steel fixed structure according to claim 1, it is characterised in that:The magnet steel hole position
The position of proximal edge is leaned in carrier.
9. a kind of disk type electric motor rotor magnetic steel fixed structure according to claim 1, it is characterised in that:The magnet steel hole is
It is angularly disposed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810402134.4A CN108390486B (en) | 2018-04-28 | 2018-04-28 | Disk motor rotor magnet steel fixed knot constructs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810402134.4A CN108390486B (en) | 2018-04-28 | 2018-04-28 | Disk motor rotor magnet steel fixed knot constructs |
Publications (2)
Publication Number | Publication Date |
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CN108390486A true CN108390486A (en) | 2018-08-10 |
CN108390486B CN108390486B (en) | 2023-12-08 |
Family
ID=63066281
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CN201810402134.4A Active CN108390486B (en) | 2018-04-28 | 2018-04-28 | Disk motor rotor magnet steel fixed knot constructs |
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CN (1) | CN108390486B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109193989A (en) * | 2018-08-17 | 2019-01-11 | 华中科技大学 | A kind of rotor suitable for axial flux permanent magnet motor and the motor containing the rotor |
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