CN209250350U - A kind of high power density permanent magnet motor - Google Patents
A kind of high power density permanent magnet motor Download PDFInfo
- Publication number
- CN209250350U CN209250350U CN201822006686.1U CN201822006686U CN209250350U CN 209250350 U CN209250350 U CN 209250350U CN 201822006686 U CN201822006686 U CN 201822006686U CN 209250350 U CN209250350 U CN 209250350U
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- permanent magnet
- crossover
- batten
- bridge
- laminations
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/12—Machines characterised by means for reducing windage losses or windage noise
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to magneto fields, disclose a kind of high power density permanent magnet motor, including casing, stator core and rotor core；The stator core is circumferentially laid along the inner wall of the casing, and the rotor core is installed in the space that the stator core surrounds；The rotor core includes at least two full crossover formula stack of laminations and at least one half crossover formula stack of laminations, wherein the lamination in the full crossover formula stack of laminations includes being all connected with the first center connecting bridge and circumferentially distributed multiple full crossover punchings, lamination in the half crossover formula stack of laminations includes that at least one is disconnected and circumferentially distributed separation punching with the second center connecting bridge, and the full crossover formula stack of laminations and the half crossover formula stack of laminations are stacked as each half crossover formula stack of laminations between two full crossover formula stack of laminations along axial direction, so that the adjacent sectors of the rotor core are asymmetric.The power density of motor can be improved in the utility model.
Description
Technical field
The utility model relates to magneto fields, more particularly to a kind of high power density permanent magnet motor.
Background technique
Conventional brushless DC motor uses surface-mount type magnetic shoe or built-in radial magnetizing ring alnico structure, and power density is lower,
It is limited to cost factor, the every pole magnetic flux of motor is improved by cutting orientation magnetizing parallel circuits structure.Existing cutting orientation magnetizing structure there are still
The big problem of leakage field limits motor performance promotion.
Patent CN201611226568.0 designs a kind of rotor core, which has at least one teeth portion sector and rotor set
The disconnection of ring, while thering is at least one teeth portion sector to be connected with shaft lantern ring.Inhibit the leakage field at paraxial place with this.The rotor core
Shaft lantern ring is externally provided with positioning convex portion, the positioning and support to permanent magnet.By analysis, the tooth disconnected due to program rotor
Portion sector is axial, and without fixed support part, axial arrangement intensity is poor, is unfavorable for being mass produced, meanwhile, it is above-mentioned to prop up
The positioning protrusion of support and positioning permanent magnet will be produced from interlinked leakage, reduce power of motor density, be unfavorable for improving performance.
On the other hand, for the motor of built-in cutting orientation magnetizing due to the promotion of power density, stator core is easily saturated generation
Higher core loss reduces electric efficiency.Electromagnetic force wave enhancing simultaneously causes vibration noise to increase.The prior art passes through tiltedly extremely oblique
The methods of slot inhibits vibration noise, and corresponding method increases manufacturing process difficulty and simultaneously increase production hour, patent
CN201320738896.4 devises the stator core of the curved circle of bar shaped, and the program inwardly stretches out teeth portion, phase from stator ring yoke portion
Line embedding groove is formed between two adjacent stator teeths.Stator magnetic circuit balance, flux density is moderate average, reduces part saturation, technique
Simply, production efficiency is higher.But above-mentioned patent only relies on the parameters such as stator rabbet width, teeth portion width and yoke portion width to flux density
It is averaging processing, fails to consider the influence of stator profile and structure to motor-field, loss etc., not applicable and high power density
Electric machine structure does not provide energy also to consider to reduce motor oscillating noise by the combined method between stator core and casing
The structure of enough considering power density and vibration suppression noise reduction.
Therefore, a kind of simple process that can be suitably used for mass production is needed, the reliable high power density of structure, and
The permanent-magnet brushless DC electric machine of low-vibration noise.
Utility model content
In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a kind of high powers
Density permanent magnet motor, which not only can simplify production technology, but also structural strength and power can be improved
Density.
In order to solve the above-mentioned technical problem of the utility model, the utility model provides a kind of high-power density permanent magnetic electricity
Machine, including casing, stator core and rotor core；The stator core is circumferentially laid along the inner wall of the casing, described non-right
Mixed rotor iron core is claimed to be installed in the space surrounded by stator core；The rotor core includes at least two full crossover formulas
Stack of laminations and at least one half crossover formula stack of laminations, wherein the lamination in the full crossover formula stack of laminations includes connecting with the first center
It connects bridge to be all connected with and circumferentially distributed multiple full crossover punchings, the lamination in the half crossover formula stack of laminations includes at least one
It is disconnected with the second center connecting bridge and circumferentially distributed separation punching, and the full crossover formula stack of laminations and half crossover
Formula stack of laminations is stacked as each half crossover formula stack of laminations between two full crossover formula stack of laminations along axial direction, so that
The adjacent sectors of the rotor core are asymmetric.
Preferably, the full crossover formula stack of laminations includes the full crossover formula lamination of multi-disc, the adjacent full crossover formula lamination it
Between be overlapped and stack；The half crossover formula stack of laminations includes half crossover formula lamination of multi-disc, weight between the adjacent half crossover formula lamination
Conjunction stacks.
Preferably, the stator core connects yoke by multiple T-type teeth and encloses, each T-type tooth connect the outer surface of yoke with
Stator slot bottom is parallel, and the teeth portion that T-type tooth connects yoke is vertical with the boundary face in yoke portion, and the quantity that T-type tooth connects yoke is equal with number of slots.
Preferably, each T-type tooth connects yoke equipped with inside and outside two rivet points of different sizes, and the diameter of outer rivet point is big
In the diameter of interior rivet point.
Preferably, the outer boundary of the stator core is in regular polygon structure；The stator core is with the casing each
The connection point contact that the T-type tooth connects yoke forms ground protection system, stator core and casing not in contact with gap pass through injection filling material
Material forms region filling.
Preferably, the full crossover formula lamination includes multiple full crossover punchings, is had between the adjacent full crossover punching
Support bridge；In the full crossover punching of adjacent two, one of them radially convexes to form wide magnetic bridge, another is along diameter
The first narrow magnetic bridge is formed to outwardly convex, the width of the wide magnetic bridge is greater than the width of the described first narrow magnetic bridge.
Preferably, the half crossover formula lamination includes multiple half crossover punchings and multiple separation punchings, two neighboring described
A separation punching is equipped between half crossover punching, separation punching is not contacted with the half crossover punching；Multiple described half
Crossover punching has partition-type support bridge between any two；The half crossover punching has the second narrow magnetic bridge, and first center connects
Bridge is connect equipped with the wide magnetic bridge of partition-type, the width of the wide magnetic bridge of partition-type is greater than the width of the described second narrow magnetic bridge.
Preferably, at least one laminate, the adjacent wide magnetic bridge and the first narrow magnetic bridge have different length,
Respectively extend radially outward to form the first sector.
Preferably, it is placed with permanent magnet in the slot between the adjacent sector, the pole of the permanent magnet in two neighboring slot
Property is different, and corresponding first center connecting bridge radially convexes to form the support bridge in slot；The support bridge with
The permanent magnet contact.
Preferably, at least one laminate, second center connecting bridge extends radially outward to form described
Two narrow magnetic bridges；
Each second narrow magnetic bridge extends radially outward to form the second sector；The second narrow magnetic bridge and second fan
Area's connection, the wide magnetic bridge of partition-type and second sector disconnect.
Preferably, two adjacent second sector areas differ.
Preferably, permanent magnet, the permanent magnet in two neighboring slot are placed in the slot between adjacent second sector
Polarity it is different, in slot corresponding second center connecting bridge extend radially outward to be formed slot bottom protrusion；The slot bottom is convex
It rises and is separated with the permanent magnet.
Preferably, the external arc surface of each full crossover punching includes batten of the multistage for reducing torque ripple；Institute
Batten is stated including at least the main batten of arc section and the straightway batten for being divided into the main batten two sides of the arc section.
Preferably, the batten includes the main batten of arc section, the arc section sample for being divided into the main batten two sides of the arc section
Item and the straightway batten being divided on the outside of two arc section battens.
Preferably, the external arc surface of each half crossover punching and each separation punching include multistage for reducing
The batten of torque ripple；The straight line that the batten includes at least the main batten of arc section and is divided into the main batten two sides of the arc section
Section batten；Preferably, the batten includes the main batten of arc section, the arc section batten for being divided into the main batten two sides of the arc section
With the straightway batten being divided on the outside of two arc section battens.
The utility model can simplify the production technology of motor, and the structural strength of motor can be improved.By design every
Disconnected formula support bridge and the wide magnetic bridge of partition-type, motor rotor construction intensity are substantially improved.Meanwhile half crossover formula lamination guarantee rotor iron
The sector of one lamination of core at least half can be connected with axle sleeve, be easy to position in large-scale production process.
Rotor slot bottom can be greatly reduced from interlinked leakage by the utility model, to improve air-gap flux, pass through T-type tooth
Even yoke stator structure, can reduce motor degree of saturation, maximize every pole magnetic flux.Compare the utility model electric machine structure and biography
The back emf coefficient of the electric machine structure of system full-bridge connection can be seen that be obviously improved using the winding back emf coefficient of the structure,
In motor heavy service, torque-current curve linearity of motor is good, does not occur saturated phenomenon, to improve motor
Energy.
By five sections of batten formula structures of rotor, the back-emf percent harmonic distortion of motor is lower, the sine degree of air-gap field compared with
It is good, the tangential torque pulsation of motor and radial vibration are reduced with this.Meanwhile yoke structure is connected using T-type tooth, contain between stator and casing
There is region filling, weaken the transmitting vibrated between stator itself and casing with this, realizes the vibration and noise reducing of motor.
Rotor slot bottom is reduced from interlinked leakage to improve power density, it is ensured that the high sine of air-gap field, substantially
Improve back emf coefficient.The utility model can simplify the production technology of motor, and the structural strength of motor can be improved.From electricity
As can be seen that reducing rotor slot bottom from interlinked leakage to improve power density in machine structure, it is ensured that the height of air-gap field is just
String greatly improves back emf coefficient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment；
Fig. 2 is the structural schematic diagram of rotor core in the utility model one embodiment；
Fig. 3 is the structural schematic diagram that T-type tooth connects yoke in the utility model one embodiment；
Fig. 4 is field frame assembly structural schematic diagram in the utility model one embodiment；
Fig. 5 is the structural schematic diagram of half crossover formula lamination in the utility model one embodiment；
Fig. 6 is the structural schematic diagram of full crossover formula lamination in the utility model one embodiment；
The left side Fig. 7 is that from the Leakage flux distribution that interlinks, the right is left side box circle at full-bridge linking rotor slot bottom in the prior art
The partial enlarged view of part out；
The left side Fig. 8 is in the prior art without partition support bridge type rotor slot bottom from the Leakage flux distribution that interlinks, and the right is left side side
Frame irises out the partial enlarged view of part；
The left side Fig. 9 is the utility model partition support bridge type rotor slot bottom from the Leakage flux distribution that interlinks, and the right is left side box
Iris out the partial enlarged view of part；
Figure 10 be three kinds of different structure motors paraxial place's slot bottom from interlinkage magnetic leakage factor correlation curve；
Figure 11 is that regular polygon T-type tooth connects space schematic diagram in yoke stator slot in the utility model one embodiment；
Figure 12 is space schematic diagram in traditional structure stator slot；
Figure 13 is each section of batten distribution schematic diagram of five sections of batten rotor punchings in the utility model one embodiment；
Figure 14 is the unloaded back-emf harmonic content of the utility model one embodiment；
Figure 15 is the decomposition texture schematic diagram of rotor core in the utility model one embodiment；
Figure 16 is the structural schematic diagram of half crossover formula stack of laminations in the utility model one embodiment.
Description of symbols
Casing 1；
Stator core 2；Ground protection system 22；Region filling 23；
T-type tooth connects yoke 21；Yoke portion 211；Stator slot bottom 2111；Inflection point 2112；Teeth portion 212；Inclined shoulder type crown slot 2121；
Outer rivet point 213；Interior rivet point 214；
Rotor core 3；
Full crossover formula stack of laminations 31；Full crossover punching 311；External arc surface 3111；Plastic through-hole 3112；Rivet point
3113；First center connecting bridge H1；Support bridge 312；Wide magnetic bridge 313；First narrow magnetic bridge 314；
Half crossover formula stack of laminations 32；Half crossover punching 321；The external arc surface 3211 of half crossover punching；Half crossover punching
Plastic through-hole 3212；The rivet point 3213 of half crossover punching；Separate punching 322；Separate the external arc surface 3221 of punching；Point
Plastic through-hole 3222 from punching；Separate the rivet point 3223 of punching；Second center connecting bridge H2；Partition-type support bridge 323；Every
The disconnected wide magnetic bridge 324 of formula；Second narrow magnetic bridge 325；
Permanent magnet 4；Axis 5；Winding 6；Insulating frame 7.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
It needs predeclared to be that in the description of the present application, " axial direction " refers generally to the axial direction of motor, i.e., along the rotation of motor
The extending direction of shaft axis.
As shown in Figure 1, one embodiment of the utility model is permanent-magnet brushless DC electric machine, including casing 1, stator iron
Core 2, rotor core 3, permanent magnet 4, axis 5, winding 6 and Insulating frame 7.
As shown in Figures 3 and 4, stator core 2 connects yoke 21 by 12 T-type teeth and encloses, between stator core 2 and casing 1
Connect the connection point contact between yoke 21 by adjacent T-type tooth, contact site forms ground protection system 22, and each T-type tooth connects the yoke portion of yoke 21
The gap of 211 outer surface or top surface between plane, and the inner wall of circular casing 1 forms region filling 23, region filling 23
Interior fillable multiple material, in this example, casing 1 is tubular molding compound, then tubular molding compound is also injected into region filling 23, i.e.,
Casing 1 and packing material are same material, and the two mixing plays enhancing motor rigidity, improves damping, absorb the effect of vibration.
Winding 6 uses flying trident coiling, and designed stator groove profile can effectively avoid flying trident coiling interference, improve and produce efficiency in enormous quantities.
As shown in figure 3, the outer surface that T-type tooth connects the yoke portion 211 of yoke 21 is parallel with stator slot bottom 2111, T-type tooth connects yoke 21
Inside and outside two rivet points of different sizes are equipped with, the size of outer rivet point 213 is greater than the size of interior rivet point 214, this implementation
In example, outer 213 diameter of rivet point is 1.2mm, 214 diameter of interior rivet point is 1.0mm；Outer rivet point 213 is set to 211 center of yoke portion
Position, interior rivet point 214 are set in the middle part of the crown of teeth portion 212；The crown shape of teeth portion 212 is inclined shoulder type, inclined shoulder type crown slot
2121 outer inclined-plane and the angle of 212 radial boundary of teeth portion are obtuse angle, preferably 120 °, the appearance of teeth portion 212 and yoke portion 211
Face or stator slot bottom 2111 are vertical, and the straight line slope over 10 of inclined shoulder type crown slot 2121 is 30 °, and 212 narrowest place width of teeth portion is
5.2mm, 211 height of yoke portion are 3.5mm, are calculated in conjunction with production technology, in the present embodiment, as shown in figure 11, the reason of stator core 2
By can around groove area compared to typical round stator core stamping sheet shown in Figure 12 can around groove area improve 8.5%.Inflection point
2112 primarily serve the effect that curved circle release stress is carried out for stator core 2.
As shown in Fig. 2,15 and 16, in the present embodiment, rotor core 3 includes two full crossover formula stack of laminations 31 and one and half
Crossover formula stack of laminations 32 is stacked as half crossover formula stack of laminations 32 between two full crossover formula stack of laminations 31 along axial direction, i.e., and two
A full crossover formula stack of laminations 31 is located at the both ends of rotor core 3, and half crossover formula stack of laminations 32 is located in rotor core 3
Between, this rotor core structure may make that adjacent sectors are asymmetric, to keep the permanent magnet trough bottom at paraxial place big from interlinked leakage
Width reduces, to improve power density.
Half crossover formula stack of laminations 32 is formed by half crossover formula lamination closed assembly of multi-disc as shown in Figure 5, half crossover formula lamination packet
Multiple half crossover punchings 321 and multiple separation punchings 322 are included, a separation punching is equipped between two neighboring half crossover punching 321
Piece 322, separation punching 322 are not contacted with half crossover punching 321；Multiple half crossover punchings 321 have partition-type branch between any two
Support bridge 323；Half crossover punching 321 has the second narrow magnetic bridge 325, and the first center connecting bridge H1 is equipped with the wide magnetic bridge 324 of partition-type,
The width of the wide magnetic bridge 324 of partition-type is greater than the width of the described second narrow magnetic bridge 325.
Full crossover formula stack of laminations 31 is formed by full crossover formula lamination closed assembly as shown in FIG. 6, and Quan Lianqiao formula lamination includes more
It is a it is adjacent between with support bridge 312 full crossover punching 311；In the full crossover punching 311 of adjacent two, one of them is along diameter
Wide magnetic bridge 313 is formed to outwardly convex, another radially convexes to form the first narrow magnetic bridge 314, the width of wide magnetic bridge 313
Greater than the width of the first narrow magnetic bridge 314, Quan Lianqiao formula lamination is axially provided with plastic through-hole 3112, and half crossover formula lamination is axially provided with
Plastic through-hole 3212 is penetrated through by plastic through-hole 3112 and 3212 using plastic material and carries out wrapped strengthening to rotor core 3,
It is located by connecting by rivet point 3113,3213,3223, the through-hole edge and the frontier distance of adjacent permanent magnet slot of punching are
2.6mm, is A+B+A along axial closed assembly structure, and one group of full crossover formula lamination 31 includes 10 full crossover formula laminations, one and half crossovers
Formula lamination 32 includes 30 half crossover formula laminations, compared with all forming the motor of rotor by half crossover formula lamination, the present embodiment
The back emf coefficient of motor improves 34.4%.
As shown in fig. 6, full crossover formula lamination is to connect bridge architecture entirely, including 10 full crossover punchings 311 lead to
It crosses the first center connecting bridge H1 to be linked together, the first center connecting bridge H1 includes multiple support bridges 312, multiple wide 313 and of magnetic bridge
Multiple first narrow magnetic bridges 314, the first center connecting bridge H1 are one continuous whole.The thickness of permanent magnet 4 selected by the present embodiment
For 5mm, the first narrow 314 width of magnetic bridge is 0.8mm, and wide 313 width of magnetic bridge is 1.5mm, and magnetic bridge length is 2.8mm, support bridge
312 width are 1.2mm.
As shown in figure 5, half crossover formula lamination is partly to connect bridge architecture, including 5 separation punchings 322 with the
Two center connecting bridge H2 are disconnected, i.e., 5 separation punchings 322 are not connected to the second center connecting bridge H2, with the second center connecting bridge
H2 is in discrete state, and the second center connecting bridge H2 includes multiple partition-type support bridges 323, wide 324 and of magnetic bridge of multiple partition-types
Multiple second narrow magnetic bridges 325, the second center connecting bridge H2 are one continuous whole.Certainly, the quantity of punching 322 is separated not
It is limited to 5, can be 1-4, be also possible to other quantity.Second narrow 325 width of magnetic bridge therein is 0.8mm, partition-type
Support bridge 323 and the spacing of permanent magnet 4 are 2.5mm, by the optimization of above-mentioned parameter, the permanent magnet trough at the paraxial place of rotor core 3
Bottom is greatly reduced from interlinked leakage, guarantees that other parameters are constant, compares full-bridge connecting type rotor structure respectively, without partition support bridge
The Distribution of Magnetic Field of formula structure and the present embodiment, and calculating from interlinkage magnetic leakage factor, referring to Figure 10, can obtain the full crossover formula of A, B without every
The slot bottom of disconnected support bridge type and C the utility model three kinds of structural electromotors of mixing bridge type from interlinkage magnetic leakage factor be respectively 0.207,
0.065,0.018, it was demonstrated that the present embodiment can substantially reduce slot bottom from the magnetic leakage factor that interlinks, so that the power for greatly improving motor is close
Degree.
As shown in Fig. 5, Fig. 6 and Figure 13, the external arc surface of Quan Lianqiao formula lamination and half crossover formula lamination is all made of five sections
Batten structure reduces torque ripple, improves vibration noise of motor, each rotor sections use this structure, i.e., an intermediate Duan Yuding
The main batten D of arc section that the concentric central angle of son is α, the two section central angles adjacent with the main batten D of arc section or so are the inclined of β 1
The straightway batten F that heart circular arc line batten E and two sections of edge central angle are β 2, should meet+2 β 1+2 β 2=36 ° of α.
By 5 sections of batten formula rotors of comparative analysis completely circular structure rotor, traditional three sections of arc construction rotors and the present embodiment,
The unloaded back-emf aberration rate optimized is only 1.18%, and corresponding harmonic components are as shown in figure 14.In the present embodiment,
Plastic shaping is carried out to rotor surface using tubular molding compound, and acquiring motor highest structural failure revolving speed is 19000rpm, is surpassed
Cross 6 times of motor actual running speed or more, it was demonstrated that the rotor surface structure of the present embodiment, which designs, can guarantee the high just of air-gap field
String and enough structural strengths.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
Detail in above embodiment can be to the skill of the utility model in the range of the technology design of the utility model
Art scheme carries out a variety of simple variants, these simple variants belong to the protection scope of the utility model.
It is further to note that specific technical features described in the above specific embodiments, in not lance
It in the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the utility model is to each
No further explanation will be given for the possible combination of kind.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed
The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.
Claims (16)
1. a kind of high power density permanent magnet motor, including casing (1), stator core (2) and rotor core (3)；The stator iron
Core (2) is circumferentially laid along the inner wall of the casing (1), and the rotor core (3) is installed on the sky that the stator core (2) surrounds
In；It is characterized in that,
The rotor core (3) includes at least two full crossover formula stack of laminations (31) and at least one half crossover formula stack of laminations
(32), wherein the lamination in the full crossover formula stack of laminations (31) includes being all connected with the first center connecting bridge (H1) and circumferentially
Multiple full crossover punchings (311) of distribution, the lamination in the half crossover formula stack of laminations (32) include at least one with second in
Heart connecting bridge (H2) disconnects and circumferentially distributed separation punching (322), and the full crossover formula stack of laminations (31) and described
Half crossover formula stack of laminations (32) is stacked as each half crossover formula stack of laminations (32) along axial direction and is located at two full crossover formulas
Between stack of laminations (31), so that the adjacent sectors of the rotor core (3) are asymmetric.
2. high power density permanent magnet motor as described in claim 1, which is characterized in that full crossover formula stack of laminations (31) packet
The full crossover formula lamination of multi-disc is included, is overlapped and stacks between the adjacent full crossover formula lamination；
The half crossover formula stack of laminations (32) includes half crossover formula lamination of multi-disc, is overlapped between the adjacent half crossover formula lamination folded
It puts.
3. high power density permanent magnet motor as described in claim 1, which is characterized in that the stator core (2) is by multiple T-types
Tooth connects yoke (21) and encloses, and the outer surface that each T-type tooth connects yoke (21) is parallel with stator slot bottom (2111), and T-type tooth connects yoke
Teeth portion (212) it is vertical with the boundary face of yoke portion (211), the quantity that T-type tooth connects yoke (21) is equal with number of slots.
4. high power density permanent magnet motor as claimed in claim 3, which is characterized in that each T-type tooth connects to be set on yoke (21)
There are inside and outside two rivet points of different sizes, the diameter of outer rivet point (213) is greater than the diameter of interior rivet point (214).
5. high power density permanent magnet motor as claimed in claim 3, which is characterized in that the outer boundary of the stator core (2)
In regular polygon structure；
The stator core (2) and the casing (1) connect the connection point contact formation ground protection system of yoke (21) in each T-type tooth
(22), stator core (2) and casing (1) not in contact with gap region filling (23) are formed by injection packing material.
6. high power density permanent magnet motor as claimed in claim 2, which is characterized in that the full crossover formula lamination includes multiple
Full crossover punching (311) has support bridge (312) between the adjacent full crossover punching (311)；Adjacent two are described to be connected entirely
In bridge punching (311), one of them radially convexes to form wide magnetic bridge (313), another is radially convexed to form
The width of first narrow magnetic bridge (314), the width magnetic bridge (313) is greater than the width of the described first narrow magnetic bridge (314).
7. high power density permanent magnet motor as claimed in claim 2, which is characterized in that the half crossover formula lamination includes multiple
Half crossover punching (321) and multiple separation punchings (322) are equipped with an institute between the two neighboring half crossover punching (321)
Separation punching (322) is stated, separation punching (322) is not contacted with the half crossover punching (321)；Multiple half crossover punchings
(321) there are partition-type support bridge (323) between any two；The half crossover punching (321) has the second narrow magnetic bridge (325), institute
The first center connecting bridge (H1) is stated equipped with the wide magnetic bridge of partition-type (324), the width of the wide magnetic bridge of partition-type (324) is greater than institute
State the width of the second narrow magnetic bridge (325).
8. high power density permanent magnet motor as claimed in claim 6, which is characterized in that adjacent at least one laminate
The wide magnetic bridge (313) and the first narrow magnetic bridge (314) with different length, respectively extend radially outward to form the first fan
Area.
9. high power density permanent magnet motor as claimed in claim 8, which is characterized in that put in the slot between the adjacent sector
It is equipped with permanent magnet (4), the polarity of the permanent magnet (4) is different in two neighboring slot, the corresponding first center connection in slot
Bridge (H1) radially convexes to form the support bridge (312)；
The support bridge (312) contacts with the permanent magnet (4).
10. high power density permanent magnet motor as claimed in claim 7, which is characterized in that described at least one laminate
Second center connecting bridge (H2) extends radially outward to form the described second narrow magnetic bridge (325)；
Each second narrow magnetic bridge (325) extends radially outward to form the second sector；The second narrow magnetic bridge (325) with it is described
The connection of second sector, the wide magnetic bridge of partition-type (324) and second sector disconnect.
11. high power density permanent magnet motor as claimed in claim 10, which is characterized in that second sector of adjacent two
Area etc..
12. high power density permanent magnet motor as claimed in claim 11, which is characterized in that between adjacent second sector
Be placed in slot permanent magnet (4), the polarity of the permanent magnet (4) is different in two neighboring slot, corresponding described second in slot in
Heart connecting bridge (H2) extends radially outward to form slot bottom protrusion；
The slot bottom protrusion is separated with the permanent magnet (4).
13. high power density permanent magnet motor as claimed in claim 6, which is characterized in that each full crossover punching (311)
External arc surface includes batten of the multistage for reducing torque ripple；
The straightway batten that the batten includes at least the main batten of arc section and is divided into the main batten two sides of the arc section.
14. high power density permanent magnet motor as claimed in claim 13, which is characterized in that the batten includes the main sample of arc section
Item, the arc section batten for being divided into the main batten two sides of the arc section and the straight line being divided on the outside of two arc section battens
Section batten.
15. high power density permanent magnet motor as claimed in claim 7, which is characterized in that each half crossover punching (321) and
The external arc surface of each separation punching (322) includes batten of the multistage for reducing torque ripple；
The straightway batten that the batten includes at least the main batten of arc section and is divided into the main batten two sides of the arc section.
16. high power density permanent magnet motor as claimed in claim 15, which is characterized in that the batten includes the main sample of arc section
Item, the arc section batten for being divided into the main batten two sides of the arc section and the straight line being divided on the outside of two arc section battens
Section batten.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591991.3A CN108923553A (en) | 2018-05-31 | 2018-05-31 | A kind of high power density permanent magnet motor |
| CN2018105919913 | 2018-05-31 |
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| Publication Number | Publication Date |
|---|---|
| CN209250350U true CN209250350U (en) | 2019-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810591991.3A Pending CN108923553A (en) | 2018-05-31 | 2018-05-31 | A kind of high power density permanent magnet motor |
| CN201811459899.8A Pending CN110556939A (en) | 2018-05-31 | 2018-11-30 | high-power-density permanent magnet motor |
| CN202110809100.9A Pending CN113346644A (en) | 2018-05-31 | 2018-11-30 | Permanent magnet motor |
| CN201822006686.1U Active CN209250350U (en) | 2018-05-31 | 2018-11-30 | A kind of high power density permanent magnet motor |
| CN202110809097.0A Pending CN113346643A (en) | 2018-05-31 | 2018-11-30 | Permanent magnet motor |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810591991.3A Pending CN108923553A (en) | 2018-05-31 | 2018-05-31 | A kind of high power density permanent magnet motor |
| CN201811459899.8A Pending CN110556939A (en) | 2018-05-31 | 2018-11-30 | high-power-density permanent magnet motor |
| CN202110809100.9A Pending CN113346644A (en) | 2018-05-31 | 2018-11-30 | Permanent magnet motor |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110809097.0A Pending CN113346643A (en) | 2018-05-31 | 2018-11-30 | Permanent magnet motor |
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| Country | Link |
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| CN (5) | CN108923553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556947A (en) * | 2018-05-31 | 2019-12-10 | 广东威灵电机制造有限公司 | Built-in permanent magnet motor |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019227890A1 (en) * | 2018-05-31 | 2019-12-05 | 广东威灵电机制造有限公司 | High-power density electric motor |
| CN114552826A (en) * | 2019-09-26 | 2022-05-27 | 广东威灵电机制造有限公司 | Rotor and motor |
| CN113315286B (en) * | 2019-09-26 | 2023-01-31 | 广东威灵电机制造有限公司 | Motor, household appliance and manufacturing method of motor |
| CN113300496B (en) * | 2019-09-26 | 2022-08-02 | 广东威灵电机制造有限公司 | Motor and household appliance |
| CN111384804B (en) * | 2019-09-26 | 2022-03-15 | 广东威灵电机制造有限公司 | Motor and household appliance |
| CN114567097A (en) * | 2019-09-26 | 2022-05-31 | 广东威灵电机制造有限公司 | Rotor and motor |
| CN111463935A (en) * | 2020-04-26 | 2020-07-28 | 安美科(安徽)汽车电驱有限公司 | Rotor core and rotor and motor with same |
| CN111416451A (en) * | 2020-05-09 | 2020-07-14 | 湖州南洋电机有限公司 | High-performance motor rotor core |
-
2018
- 2018-05-31 CN CN201810591991.3A patent/CN108923553A/en active Pending
- 2018-11-30 CN CN201811459899.8A patent/CN110556939A/en active Pending
- 2018-11-30 CN CN202110809100.9A patent/CN113346644A/en active Pending
- 2018-11-30 CN CN201822006686.1U patent/CN209250350U/en active Active
- 2018-11-30 CN CN202110809097.0A patent/CN113346643A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556947A (en) * | 2018-05-31 | 2019-12-10 | 广东威灵电机制造有限公司 | Built-in permanent magnet motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108923553A (en) | 2018-11-30 |
| CN113346644A (en) | 2021-09-03 |
| CN113346643A (en) | 2021-09-03 |
| CN110556939A (en) | 2019-12-10 |
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