CN108390483A - Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric vehicle - Google Patents
Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric vehicle Download PDFInfo
- Publication number
- CN108390483A CN108390483A CN201810219855.1A CN201810219855A CN108390483A CN 108390483 A CN108390483 A CN 108390483A CN 201810219855 A CN201810219855 A CN 201810219855A CN 108390483 A CN108390483 A CN 108390483A
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- Prior art keywords
- permanent magnet
- magnet trough
- layer permanent
- outer layer
- button point
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- 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
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- 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 present invention provides a kind of rotor structure, permanent magnetism assist in synchronization reluctance motor and electric vehicle, rotor structure includes rotor body and the first button point component.Permanent magnet trough group and shaft hole are provided on rotor body, permanent magnet trough group includes outer layer permanent magnet trough.Button point component is buckled including first a little to be buckled a little with second, on the first side wall of the d-axis of first button point and a close rotor body for being set to outer layer permanent magnet trough in the second button point, another in first button point and the second button point is set in the second sidewall opposite with the first side wall of outer layer permanent magnet trough, first button point and the second button point dislocation ground setting, the first limit space is formed between the first button point and the second button point.By shifting to install two button points in outer layer permanent magnet trough in two side walls, so that the position line of two button points is along the permanent magnet diagonal setting being set in outer layer permanent magnet trough, so that the permanent magnet when vibrated, has the function that enhance permanent magnet stability.
Description
Technical field
The present invention relates to motor device technical fields, in particular to a kind of rotor structure, permanent magnetism assist in synchronization magnetic resistance
Motor and electric vehicle.
Background technology
Built-in magneto has many advantages, such as that simple for process, structure is reliable, durface mounted permanent magnet compared to surface-mounted permanent magnet machine
The permanent magnet of motor is to be pasted onto core exterior by High-strength glue to show, and wrap steel bushing or carbon fiber set in outside.Rotor
Once assembly is complete, any movement is not had.And built-in magneto, permanent magnet are only to fill in permanent magnet trough, not
There is any external fixed constraint that exerts a force.In the violent environment of certain vibrations, permanent magnet is small present in permanent magnet trough
Gap can provide space to the micro-vibration and micro-displacement of permanent magnet, prolonged vibrations lead to the same permanent magnet of permanent magnet surfaces
Slot friction destroys permanent magnet surfaces or even powdered.
Invention content
The main purpose of the present invention is to provide a kind of rotor structure, permanent magnetism assist in synchronization reluctance motor and electric vehicle,
To solve the problems, such as that permanent magnet is fixed unstable in permanent magnet trough in the prior art.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of rotor structure, including：Rotor sheet
Body is provided with permanent magnet trough group and shaft hole on rotor body, and permanent magnet trough group includes outer layer permanent magnet trough；First button point group
Part, the first button point component is buckled including first a little to be buckled a little with second, and one in the first button point and the second button point is set to outer layer forever
On the first side wall of the d-axis of the close rotor body of magnet slot, another in the first button point and the second button point is set to outer layer
In the second sidewall opposite with the first side wall of permanent magnet trough, first button point with second button point dislocation ground setting, first button point and
The first limit space is formed between second button point.
Further, the first button point is set on the first side wall, and the first button point is the first protrusion, and the first protrusion has first
The first end on side, the first side is connected with the first side wall and forms the first limit angle, and the second end on the first side is towards second sidewall
Extend.
Further, first protrusion also have the second side, second while first end with first while second end be connected simultaneously
Extend and be gradually distance from second sidewall towards the outer edge of rotor body until the second end on the second side intersects with the first side wall.
Further, the first protrusion also have second while and when third, second while first end with first while second end
It is connected and there is angle, the outer edge of second end towards the rotor body on the second side to extend, the first end on third side and second
The second end on side is connected and there is angle, the second end on third side to be connected with the first side wall.
Further, the second button point is set to the shaft hole in second sidewall and close to rotor body and is arranged, the second button point
For the second protrusion, the second protrusion has with first in the 4th be oppositely arranged, and the first end on the 4th side is connected with second sidewall
Connect and have the second limit angle, the second limit angle and the first limit angle are equal or different, first at the 4th between form
One limit space.
Further, the first button point component is two, and outer layer permanent magnet trough includes：First outer layer permanent magnet trough section, two
One in first button point component is set in the first outer layer permanent magnet trough section；Second outer layer permanent magnet trough section, the first outer layer is forever
Magnet slot section and the second outer layer permanent magnet trough section are arranged along the radial direction of rotor body and are located at rotor body with having distance
It is the both sides of d-axis, the length of the geometric center lines of the length direction of the first outer layer permanent magnet trough section and the second outer layer permanent magnet trough section
There is the extended line for spending the geometric center lines in direction angle, another in two first button point components to be set to the second outer layer forever
In magnet slot section.
Further, the first button point component is two, and outer layer permanent magnet trough includes：First outer layer permanent magnet trough section, first
The first end of outer layer permanent magnet trough section extends towards shaft hole, and the second end of the first outer layer permanent magnet trough section is towards rotor body
Outer edge extends and is gradually distance from the d-axis setting of rotor body, and one in two first button point components is set to the first outer layer
In permanent magnet trough section；Second outer layer permanent magnet trough section, the first end of the second outer layer permanent magnet trough section extend towards shaft hole and with
The first end of first outer layer permanent magnet trough section is connected, and the second end of the second outer layer permanent magnet trough section is towards the outside of rotor body
Along extending and being gradually distance from d-axis setting, another in two first button point components is set to the second outer layer permanent magnet trough section
On.
Further, permanent magnet trough group further includes：Internal layer permanent magnet trough, outer layer permanent magnet trough are adjacent with internal layer permanent magnet trough
Ground is arranged, and magnetic conduction channel is formed between outer layer permanent magnet trough and internal layer permanent magnet trough, internal layer permanent magnet trough includes setting gradually
First internal layer permanent magnet trough section, the second internal layer permanent magnet trough section and third internal layer permanent magnet trough section；First internal layer permanent magnet trough section,
Second internal layer permanent magnet trough section and third internal layer permanent magnet trough section are sequentially communicated to form outer edge of the opening towards rotor body
U-shaped structure, alternatively, the first internal layer permanent magnet trough section, the second internal layer permanent magnet trough section and third internal layer permanent magnet trough section are successively
It is positioned apart from, it is adjacent in the first internal layer permanent magnet trough section, the second internal layer permanent magnet trough section and third internal layer permanent magnet trough section
It is formed with magnetic bridge between two.
Further, rotor structure further includes the second button point component, and the second button point component includes third protrusion, third protrusion
It is set on the third side wall of the d-axis of the separate rotor body of the first internal layer permanent magnet trough section.
Further, the second button point component further includes the 4th protrusion, and the 4th protrusion is set to the first internal layer permanent magnet trough section
Fourth side wall opposite with third side wall on, form the second limit space between third protrusion and the 4th protrusion.
Further, rotor structure further includes third button point component, and third button point component includes the 5th protrusion, the 5th protrusion
It is set on the side wall of the separate shaft hole side of the second internal layer permanent magnet trough section.
Further, third button point component further includes the 6th protrusion, and the 6th protrusion is set to the second internal layer permanent magnet trough section
Above and with the 5th protrusion it is located on the same side wall, third limit space is formed between the 5th protrusion and the 6th protrusion.
Further, rotor structure further includes the 4th button point component, and the 4th button point component includes the 6th protrusion, the 6th protrusion
It is set on the 5th side wall of the d-axis side of the separate rotor body of third internal layer permanent magnet trough section.
Further, the 4th button point component further includes the 7th protrusion, and the 7th protrusion is set to third internal layer permanent magnet trough section
Sixth side wall opposite with the 5th side wall on, alternatively, the 7th protrusion is set to the close shaft of third internal layer permanent magnet trough section
On the side wall of hole side, the 4th limit space is formed between the 6th protrusion and the 7th protrusion.
Further, the first end of the first protrusion is connected with the first side, and the first raised second end is towards second sidewall
Extend and moves closer to be arranged at shaft hole, and/or, the first end of the second protrusion is connected with second sidewall, the second protrusion
Second end is connected towards the first side wall and is gradually distance from shaft hole setting.
Further, rotor structure further includes permanent magnet, permanent magnet, and spacing breach, permanent magnet packet are offered on permanent magnet
It includes：Outer layer permanent magnet is set in outer layer permanent magnet trough, and spacing breach is opened at least one end of outer layer permanent magnet；Internal layer
Permanent magnet is set in internal layer permanent magnet trough, and spacing breach is opened at least one end of internal layer permanent magnet.
Further, permanent magnet includes：Permanent magnet ontology includes sequentially connected at least one end of permanent magnet ontology
The junction of one surface, second surface and third surface, first surface and second surface forms spacing breach, first surface with forever
Plane where the side wall of the close first surface of magnet body has an included angle B, and third surface and permanent magnet ontology are close to the
The side wall on three surfaces has included angle A, wherein B ≠ A, alternatively, A+B=180 °.
Further, the first button point and second detains the line of point by the weight of the outer layer permanent magnet in outer layer permanent magnet trough
The heart, and/or, the line of third protrusion and the 4th protrusion passes through the center of gravity of the internal layer permanent magnet in internal layer permanent magnet trough.
Further, internal layer permanent magnet trough is at least two layers.
According to another aspect of the present invention, a kind of permanent magnetism assist in synchronization reluctance motor, including rotor structure, rotor are provided
Structure is above-mentioned rotor structure.
According to another aspect of the present invention, a kind of electric vehicle, including rotor structure are provided, rotor structure is above-mentioned
Rotor structure.
It applies the technical scheme of the present invention, two button points in outer layer permanent magnet trough is shifted to install in two side walls,
So that the position line of two button points is along the permanent magnet diagonal setting being set in outer layer permanent magnet trough so that the permanent magnetism
Body has the function that enhance permanent magnet stability when vibrated.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the structural schematic diagram of the embodiment one of rotor structure according to the present invention；
Fig. 2 shows the schematic cross-sectional views of the embodiment two of rotor structure according to the present invention；
Fig. 3 shows the structural schematic diagram of the embodiment three of rotor structure according to the present invention；
Fig. 4 shows the structural schematic diagram of the example IV of rotor structure according to the present invention；
Fig. 5 shows the schematic cross-sectional view of the embodiment five of rotor structure according to the present invention；
Fig. 6 shows the schematic cross-sectional view of the embodiment six of rotor structure according to the present invention；
Fig. 7 shows the structural schematic diagram of the embodiment one of the permanent magnet of rotor structure according to the present invention；
Fig. 8 shows the structural schematic diagram of the embodiment two of the permanent magnet of rotor structure according to the present invention；
Fig. 9 shows the structural schematic diagram of the embodiment seven of rotor structure according to the present invention；
Figure 10 shows the structural schematic diagram of the embodiment eight of rotor structure according to the present invention；
Figure 11 shows the structural schematic diagram of the embodiment of the button point component of rotor structure according to the present invention；
Figure 12 shows the structural schematic diagram of another embodiment of the button point component of rotor structure according to the present invention.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, rotor body；13, hollow hole；14, shaft hole；
11, outer layer permanent magnet trough；111, the first outer layer permanent magnet trough section；112, the second outer layer permanent magnet trough section；
12, internal layer permanent magnet trough；121, the first internal layer permanent magnet trough section；122, the second internal layer permanent magnet trough section；123,
Three internal layer permanent magnet trough sections；
20, outer layer permanent magnet；30, internal layer permanent magnet；
40, spacing breach；41, first surface；42, second surface；43, third surface；
50, the first button point component；51, the first button point；511, the first side；512, the second side；513, third side；
52, the second button point；521, the 4th side；
60, the second button point component；61, third protrusion；62, the 4th protrusion；
70, third button point component；71, the 5th protrusion；72, the 6th protrusion；
80, the 4th button point component；81, the 7th protrusion；82, the 8th protrusion.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In conjunction with shown in Fig. 1 to Figure 12, according to an embodiment of the invention, a kind of rotor structure is provided.
Specifically, which includes the button point component 50 of rotor body 10 and first.It is provided with forever on rotor body 10
Magnet slot group and shaft hole 14, permanent magnet trough group include outer layer permanent magnet trough 11.First button point component 50 buckles a little 51 including first
With the second button point 52, the first button point 51 and second detains a close rotor body for being set to outer layer permanent magnet trough 11 in point 52
On the first side wall of 10 d-axis (as shown in Figure 1, d-axis is the d axis in figure, quadrature axis is the q axis in figure), the first button 51 Hes of point
Another in second button point 52 is set in the second sidewall opposite with the first side wall of outer layer permanent magnet trough 11, the first button point
51 and second button point 52 dislocation ground setting, first button point 51 and second button point 52 between form the first limit space.
In the present embodiment, two button points in outer layer permanent magnet trough are shifted to install in two side walls so that two
The position line of point is detained along the permanent magnet diagonal setting being set in outer layer permanent magnet trough so that the permanent magnet by
When vibration, have the function that enhance permanent magnet stability.
As shown in figure 11, the first button point 51 is set on the first side wall, and the first button point 51 is the first protrusion, the first protrusion tool
There is the first side 511, the first end on the first side 511 is connected with the first side wall and forms the first limit angle, and the second of the first side 511
End extends towards second sidewall.Setting can make the first side play position-limiting action in this way, and when bearing permanent magnet and vibrating
Stress.
Wherein, first protrusion also have the second side 512, second when 512 first end is with first 511 second end be connected
It connects and extends towards the outer edge of rotor body 10 and be gradually distance from second end and first side of the second sidewall up to the second side 512
Wall intersects.Setting is convenient for the raised intensity of increase in this way so that protrusion can preferably play position-limiting action.
In the present embodiment, the first protrusion also has second at 512 and third 513, the first end on the second side 512 and the
511 second end is connected and there is angle, the outer edge of second end towards the rotor body 10 on the second side 512 to extend on one side,
Third 512 second end when 513 first end is with second is connected and has angle, the second end on third side 513 and first
Side wall is connected.Setting is convenient for the raised intensity of increase in this way so that protrusion can preferably play position-limiting action.
Wherein, the second button point 52 is set in second sidewall and is arranged close to the shaft hole 14 of rotor body 10, the second button
Point 52 for second protrusion, second protrusion have with first while 511 be oppositely arranged the 4th while 521, the first end on the 4th side 521 with
Second sidewall is connected and has the second limit angle, and the second limit angle and the first limit angle are equal or different, the first side 511 and
The first limit space is formed between four sides 521.Setting in this way is played it solid convenient for placing permanent magnet in the first limit space
It is set for using.
In the present embodiment, the first button point component 50 is two, and outer layer permanent magnet trough 11 includes the first outer layer permanent magnet trough
Section 111 and the second outer layer permanent magnet trough section 112.One in two first button point components 50 is set to the first outer layer permanent magnet trough
In section 111.First outer layer permanent magnet trough section 111 and the second outer layer permanent magnet trough section 112 have along the radial direction of rotor body 10
Distance be arranged and positioned at rotor body 10 be d-axis both sides, the length direction of the first outer layer permanent magnet trough section 111 it is several
The extended line of what center line and the geometric center lines of the length direction of the second outer layer permanent magnet trough section 112 is with angle, two the
Another in one button point component 50 is set in the second outer layer permanent magnet trough section 112.Outer layer permanent magnet trough is convenient in setting in this way
Permanent magnet is preferably fixed by button point component.
Wherein, the first button point component 50 is two, and outer layer permanent magnet trough 11 includes the first outer layer permanent magnet trough section 111 and the
Two outer layer permanent magnet trough sections 112.The first end of first outer layer permanent magnet trough section 111 extends towards shaft hole 14, and the first outer layer is forever
The outer edge of the second end of magnet slot section 111 towards rotor body 10 extends and is gradually distance from the d-axis setting of rotor body 10,
One in two first button point components 50 is set in the first outer layer permanent magnet trough section 111.Second outer layer permanent magnet trough section 112
First end towards shaft hole 14 extend and be connected with the first end of the first outer layer permanent magnet trough section 111, the second outer layer permanent magnetism
The outer edge of second end towards the rotor body 10 of body slot section 112 extends and is gradually distance from d-axis setting, two first button point groups
Another in part 50 is set in the second outer layer permanent magnet trough section 112.Setting passes through button point convenient for outer layer permanent magnet trough in this way
Component preferably fixes permanent magnet.
In the present embodiment, permanent magnet trough group further includes internal layer permanent magnet trough 12, outer layer permanent magnet trough 11 and internal layer permanent magnetism
Body slot 12 is disposed adjacently, and magnetic conduction channel, internal layer permanent magnet trough are formed between outer layer permanent magnet trough 11 and internal layer permanent magnet trough 12
12 include the first internal layer permanent magnet trough section 121, the second internal layer permanent magnet trough section 122 and the third internal layer permanent magnet trough set gradually
Section 123.First internal layer permanent magnet trough section 121, the second internal layer permanent magnet trough section 122 and third internal layer permanent magnet trough section 123 are successively
Connection is to form U-shaped structure of the opening towards the outer edge of rotor body 10, alternatively, the first internal layer permanent magnet trough section 121, second
Internal layer permanent magnet trough section 122 and third internal layer permanent magnet trough section 123 are positioned apart from successively, the first internal layer permanent magnet trough section 121,
In second internal layer permanent magnet trough section 122 and third internal layer permanent magnet trough section 123 magnetic bridge is formed between adjacent two.In this way
Be provided with conducive to magnetic bridge design it is thinner, and then raising permanent magnetism assist in synchronization reluctance motor (hereinafter referred to as motor) performance.
As shown in figs. 3 and 10, rotor structure further includes the second button point component 60, and the second button point component 60 includes that third is convex
61 are played, third protrusion is set on the third side wall of the d-axis of the separate rotor body 10 of the first internal layer permanent magnet trough section 121.This
Sample setting preferably fixes permanent magnet by buckleing some components convenient for internal layer permanent magnet trough.
In the present embodiment, the second button point component 60 further includes the 4th protrusion 62, and the 4th protrusion 62 is set to the first internal layer
On the 4th side wall opposite with third side wall of permanent magnet trough section 121, second is formed between third protrusion 61 and the 4th protrusion 62
Limit space.Setting preferably fixes permanent magnet by button point component convenient for internal layer permanent magnet trough in this way.
As shown in Figure 9 and Figure 10, rotor structure further includes third button point component 70, and third button point component 70 includes the 5th convex
71 are played, the 5th protrusion 71 is set on the side wall of 14 side of separate shaft hole of the second internal layer permanent magnet trough section 122.It is arranged in this way
Permanent magnet is preferably fixed by button point component convenient for internal layer permanent magnet trough.
In the present embodiment, third button point component 70 further includes the 6th protrusion 72, and the 6th protrusion 72 is set to the second internal layer
It is located on the same side wall in permanent magnet trough section 122 and with the 5th protrusion 71, is formed between the 5th protrusion 71 and the 6th protrusion 72
Third limit space.Setting is convenient for preferably fixing permanent magnet by detaining point in limit space in this way.
As shown in Figure 3 and Figure 5, rotor structure further includes the 4th button point component 80, and the 4th button point component 80 includes the 7th convex
81 are played, the 7th protrusion 81 is set to the 5th side of the d-axis side of the separate rotor body 10 of third internal layer permanent magnet trough section 123
On wall.Setting is convenient for preferably fixing permanent magnet by detaining point in limit space in this way.
Wherein, the 4th button point component 80 further includes the 8th protrusion 82, and the 8th protrusion 82 is set to third internal layer permanent magnet trough
On the 6th side wall opposite with the 5th side wall of section 123, alternatively, the 8th protrusion 82 is set to third internal layer permanent magnet trough section 123
14 side of close shaft hole side wall on, the 7th protrusion 81 and the 8th forms the 4th limit space between protrusion 82.It sets in this way
It sets convenient for preferably being fixed to permanent magnet in limit space by detaining point.
In the present embodiment, the first end of the first protrusion is connected with the first side, the second end direction second of the first protrusion
Side wall extends and moves closer to the first end of setting or the second protrusion at shaft hole 14 to be connected with second sidewall, the second protrusion
Second end be connected towards the first side wall and be gradually distance from shaft hole 14 setting, or both exist simultaneously.Setting is convenient in this way
Permanent magnet is preferably fixed by detaining point in limit space.
In the present embodiment, rotor structure further includes permanent magnet, and spacing breach 40 is offered on permanent magnet, and permanent magnet includes
Outer layer permanent magnet 20 and internal layer permanent magnet 30.Outer layer permanent magnet 20 is set in outer layer permanent magnet trough 11, and spacing breach 40 opens up
In at least one end of outer layer permanent magnet 20.Internal layer permanent magnet 30 is set in internal layer permanent magnet trough 12, and spacing breach 40 opens up
In at least one end of internal layer permanent magnet 30.Setting is convenient for permanent magnet and the even closer firm cooperation of button point in this way.
In the present embodiment, permanent magnet includes permanent magnet ontology, includes being sequentially connected at least one end of permanent magnet ontology
First surface 41, second surface 42 and third surface 43, the junction of first surface 41 and second surface 42 forms limit and lacks
Mouth 40, first surface 41 have included angle B, third surface with the plane where the side wall of the close first surface 41 of permanent magnet ontology
43 with the side wall on close the third surface 43 of permanent magnet ontology with included angle A, wherein B ≠ A, alternatively, A+B=180 °.It sets in this way
It sets convenient for permanent magnet ontology firmly by button point limit, not because vibration is moved.
In the present embodiment, the line of the first button point 51 and the second button point 52 passes through the outer layer in outer layer permanent magnet trough 11 forever
The center of gravity of magnet 20, alternatively, the line of third protrusion 61 and the 4th protrusion 62 is by the internal layer permanent magnetism in internal layer permanent magnet trough 12
The center of gravity of body 30, it is both certain to be arranged simultaneously.Setting is so that the better fixed permanent magnet of permanent magnet trough, enhancing in this way
The stability of permanent magnet, improves the performance of motor.
As shown in figure 12, internal layer permanent magnet trough 12 is at least two layers, and permanent magnet spacing breach is relative to rectangular permanent magnet pair
Angle is arranged, and its line, by the center of gravity of permanent magnet, the spacing breach of every layer of permanent magnet trough is close to q axis or d axis.It is arranged in this way
Friction of the permanent magnet surfaces with permanent magnet trough is avoided, the stability of permanent magnet is enhanced, improves the performance of motor.
Rotor structure in above-described embodiment can be also used for motor device technical field, i.e., another party according to the present invention
Face, provides a kind of permanent magnetism assist in synchronization reluctance motor, including rotor structure, and rotor structure is above-mentioned rotor structure.
Rotor structure in above-described embodiment can be also used for vehicle arrangement technical field, i.e., another party according to the present invention
Face, provides a kind of electric vehicle, including rotor structure, and rotor structure is above-mentioned rotor structure.
As shown in Figure 1, there is with multiple permanent magnet trough groups hollow hole 13 on rotor punching, the formation of circumference uniform distribution is multiple
Pole, at least two layers of permanent magnet trough group, the first internal layer permanent magnet trough section 121, the second internal layer permanent magnet trough section 122 and third internal layer
Permanent magnet trough section 123 is sequentially communicated to form U-shaped structure of the opening towards the outer edge of rotor body 10.In each permanent magnet trough
There is the button point of at least two fixed permanent magnets.To prevent permanent magnet from being slided in permanent magnet trough.
Wherein, the first internal layer permanent magnet trough section 121 and third internal layer permanent magnet trough section 123 are placed in permanent magnet trough close to q axis
It, can be by centrifugal force that the button point structure generates internal layer permanent magnet by q when permanent magnet is by centrifugation force effect on side
It is undertaken on axis.Iron core width at q axis will far be wider than the thickness of tangential magnetic bridge and radial magnetic bridge, thus structural strength also compared with
It is high.Centrifugal force is shared to q axis, by Finite Element Simulation Analysis, tangential magnetic bridge and radial magnetic bridge maximum local stress
Reduce 50% or more.Internal layer radial permanent magnet body slot internal buckle point is placed in the diagonal angle of rectangular permanent magnet slot cross-section.When permanent magnet by
When vibration, armature field active force, since two of slot button point lines are by or close to permanent magnet position of centre of gravity, two button points
The stress being subject to is more balanced, and permanent magnet is more firm.Permanent magnet is inserted into before the slot, can be in permanent magnet with the face of button point contact
On coat a small amount of epoxy glue in advance, to completely eliminate fit clearance.
As shown in figure 4, the internal layer tangential permanent magnet body slot button point position in the second internal layer permanent magnet trough section 122 is arranged in permanent magnetism
Body slot top, the convenient internal buckle point with internal layer permanent magnet trough share button point position, which can extend at iron core, form diameter
To magnetic bridge structure, it is connected across in permanent magnet trough.As shown in Figures 2 and 3, directly a part for radial magnetic bridge can also be made
To detain point, permanent magnet anchor point is contacted with radial magnetic bridge.When usual rotor strength deficiency, the structure can be increased.In view of
Two internal layer permanent magnet trough sections 122 are under by centrifugation force effect, and stress surface is vertical with centrifugation force direction, without turning on permanent magnet
Power is even, therefore detains point position and be arranged in the same side.It can certainly design in diagonal side, internal layer tangential permanent magnet body is for detaining point such as
What arrangement does not have much affect.Internal layer radial permanent magnet body and internal layer tangential permanent magnet body are arranged in corresponding permanent magnet trough.
In the present embodiment, the outer layer radial permanent magnet body slot outward buckle point in outer layer radial permanent magnet body slot is radial forever with outer layer
The diagonal side positioned at permanent magnet trough of magnet slot internal buckle point.When there is no radial magnetic bridge, due to outer layer radial permanent magnet body phase
It is inclined for d axis.The area of space of one triangle is formed with d axis and horizontal direction on the bottom of its rectangular permanent magnet.
To utilize permanent magnet trough area to greatest extent, increase permanent magnetism body length (dosage).By outer layer radial permanent magnet body slot internal buckle point design
In the slot close to the side of d axis.The space can be made full use of.Outer layer radial permanent magnet body slot outward buckle point is located at the diagonal of the position
Place.It under conventional design, can at least increase permanent magnetism 2~4mm of body length, the performance and power of motor can be promoted.
In the present embodiment, exist on d axis on outer layer radial permanent magnet body slot radial magnetic bridge across when, by magnetic bridge space
Limitation, outer layer radial permanent magnet body slot internal buckle point design can cause magnetic bridge equivalent width to increase close to d axis side, and length shortens,
So that leakage field increases, motor performance declines, and therefore, outer layer radial permanent magnet body slot internal buckle point needs to design in the slot far from d axis
Side, then outer layer radial permanent magnet body slot outward buckle point is diagonally arranged due to needing at this time, just in the slot close to the side of d axis.
As shown in Figure 6 and Figure 7, it is vertical with permanent magnet trough inner wall.It can also be inclined.Its inclined direction should
It is directed towards another corresponding button point position in same slot.With the position of button point cooperation on permanent magnet, there are a notch, notch to make
The vertex of rectangular permanent magnet originally is become by right angle for acute angle.Matched button point also becomes acute angle from right angle.Diagonally
The same variation of the line other end.It is just dead by button point limit after permanent magnet is inserted into permanent magnet trough.In view of permanent magnet performance and demagnetization
It influences, usual angle of inclination is less than 10 degree.The length for detaining the contact portion of point is less than 5mm.
As shown in figure 8, processing for convenience.The side of two button point contacts of permanent magnet is directly processed as an inclined-plane,
It is in a parallelogram like to make entire permanent magnet.To avoid permanent magnet excessively sharp, tip is caused to be demagnetized, angle C is usually less than 100
Degree.Secondary operation after molding is not only facilitated using the design.It can play the role of fool proof mistake proofing simultaneously.For example, at certain
In a little large-size machine production processes, usual permanent magnet is first substituted the bad for the good magnetic, and then band magnetic assembles.It, will be any when permanent magnet is rectangle
One can be inserted facing to d axis.Can exist it is same extremely under, permanent magnet polarity is opposite.And by the design, the face being inserted into
It is unique.It is same extremely under, the different permanent magnet of two panels polarity will not be inserted into, play and evade the quality of production, the effect of mistake proofing
Fruit.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Diagonal arrangement by permanent magnet button point relative to rectangular permanent magnet, when vibrated, two button point positions connect
Line can reduce the stress of button point by the center of gravity of permanent magnet, can have the function that enhance permanent magnet stability.Such as with two
Root finger pinches the object of a rectangle, and when impetus is when diagonal, stability is obviously got well than pinching the side in rectangle.
By the button point design of internal layer permanent magnet on q axis, the centrifugal force of internal layer tangential permanent magnet body can be acted on by detaining point
On the higher q axis of structural strength, for overcoming the centrifugal force of permanent magnet by tangential magnetic bridge and radial magnetic bridge, turn
Sub-component has higher structural strength.Or under the comparable design of structural strength, the thinner of magnetic bridge design is conducive to carry
High motor performance.The above structural strength refers under identical rotating speed and load, and the allowable stress of core material and maximum part are answered
The ratio of power.Maximum local stress is smaller, and rotor strength is also higher.
Since outer layer permanent magnet is that same d axis is tilting at an angle, without radial magnetic bridge structure when, by outer layer permanent magnetism
Point design is detained close to d axis side in body bottom, can make full use of the Delta Region portion of rectangular permanent magnet and permanent magnet trough formation
Divide to design buckle.Permanent magnetism body length can be increased, improve power of motor factor and performance.
When there is radial magnetic bridge, the thickness quilt of magnetic bridge can be made in d axis by detaining point design such as outer layer permanent magnet bottom
It thickeies very much, leakage field increases, and influences motor performance.Therefore, the position arrangement of outer layer permanent magnet bottom button point is placed in this forever
Magnet slot is far from d axis side.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (21)
1. a kind of rotor structure, which is characterized in that including：
Rotor body (10) is provided with permanent magnet trough group and shaft hole (14), the permanent magnet trough on the rotor body (10)
Group includes outer layer permanent magnet trough (11)；
First button point component (50), the first button point component (50) buckles point (51) and second including first and buckles point (52), described
One in first button point (51) and the second button point (52) is set to turning close to described for the outer layer permanent magnet trough (11)
On the first side wall of the d-axis of sub- ontology (10), another setting in the first button point (51) and the second button point (52)
In in the second sidewall opposite with the first side wall of the outer layer permanent magnet trough (11), the first button point (51) with it is described
Second button point (52) is arranged with misplacing, and forming first between the first button point (51) and the second button point (52) limits sky
Between.
2. rotor structure according to claim 1, which is characterized in that the first button point (51) is set to first side
On wall, the first button point (51) is the first protrusion, and first protrusion has the first side (511), first side (511)
First end is connected with the first side wall and forms the first limit angle, and the second end of first side (511) is towards described
Two side walls extend.
3. rotor structure according to claim 2, which is characterized in that first protrusion also has the second side (512), institute
State second when the first end of (512) is with described first the second end of (511) be connected and towards the rotor body (10)
Outer edge extends and is gradually distance from second end and the first side wall phase of the second sidewall up to second side (512)
It hands over.
4. rotor structure according to claim 2, which is characterized in that it is described first protrusion also have the second side (512) and
Third side (513), described second when the first end of (512) is with described first the second end of (511) be connected and there is angle,
The outer edge of the second end of second side (512) towards the rotor body (10) extends, and the first of the third side (513)
End is connected with the second end of second side (512) and has angle, the second end and described first of the third side (513)
Side wall is connected.
5. according to claim 2 to 4 any one of them rotor structure, which is characterized in that the second button point (52) is set to
It is arranged in the second sidewall and close to the shaft hole (14), the second button point (52) is the second protrusion, and described second is convex
Rise with described first while (511) be oppositely arranged the 4th while (521), the first end of the 4th side (521) and described the
Two side walls are connected and have the second limit angle, and second limit angle and first limit angle are equal or different, and described
On one side first limit space is formed between (511) and the 4th side (521).
6. according to claim 2 to 4 any one of them rotor structure, which is characterized in that described first, which detains point component (50), is
Two, the outer layer permanent magnet trough (11) includes：
First outer layer permanent magnet trough section (111), two described first one detained in point components (50) are set to outside described first
In layer permanent magnet trough section (111)；
Second outer layer permanent magnet trough section (112), the first outer layer permanent magnet trough section (111) and the second outer layer permanent magnet trough
Section (112) along the radial direction of the rotor body (10) there is distance ground to be arranged and positioned at the d-axis of the rotor body (10)
Both sides, the geometric center lines of the length direction of the first outer layer permanent magnet trough section (111) and the second outer layer permanent magnet
The extended line of the geometric center lines of the length direction of slot section (112) has angle, and two described first are detained in point components (50)
Another is set on the second outer layer permanent magnet trough section (112).
7. rotor structure according to claim 5, which is characterized in that the first button point component (50) is two, described
Outer layer permanent magnet trough (11) includes：
First outer layer permanent magnet trough section (111), the first end of the first outer layer permanent magnet trough section (111) is towards the shaft hole
(14) extend, the outer edge of second end towards the rotor body (10) of the first outer layer permanent magnet trough section (111) extends
And it is gradually distance from the d-axis setting of the rotor body (10), one in two the first button point components (50) is set to institute
It states in the first outer layer permanent magnet trough section (111)；
Second outer layer permanent magnet trough section (112), the first end of the second outer layer permanent magnet trough section (112) is towards the shaft hole
(14) extend and be connected with the first end of the first outer layer permanent magnet trough section (111), the second outer layer permanent magnet trough section
(112) outer edge of second end towards the rotor body (10) extends and is gradually distance from the d-axis setting, described in two
Another in first button point component (50) is set on the second outer layer permanent magnet trough section (112).
8. rotor structure according to any one of claims 1 to 4, which is characterized in that the permanent magnet trough group further includes：
Internal layer permanent magnet trough (12), the outer layer permanent magnet trough (11) are disposed adjacently with the internal layer permanent magnet trough (12), institute
It states and forms magnetic conduction channel, the internal layer permanent magnet trough (12) between outer layer permanent magnet trough (11) and the internal layer permanent magnet trough (12)
Including the first internal layer permanent magnet trough section (121), the second internal layer permanent magnet trough section (122) and third internal layer permanent magnet set gradually
Slot section (123)；
The first internal layer permanent magnet trough section (121), the second internal layer permanent magnet trough section (122) and the third internal layer permanent magnetism
Body slot section (123) is sequentially communicated to form U-shaped structure of the opening towards the outer edge of the rotor body (10), alternatively,
The first internal layer permanent magnet trough section (121), the second internal layer permanent magnet trough section (122) and the third internal layer permanent magnetism
Body slot section (123) is positioned apart from successively, the first internal layer permanent magnet trough section (121), the second internal layer permanent magnet trough section
(122) and in the third internal layer permanent magnet trough section (123) magnetic bridge is formed between adjacent two.
9. rotor structure according to claim 8, which is characterized in that the rotor structure further includes the second button point component
(60), the second button point component (60) includes third protrusion (61), and the third protrusion is set to the first internal layer permanent magnetism
On the third side wall of the d-axis far from the rotor body (10) of body slot section (121).
10. rotor structure according to claim 9, which is characterized in that the second button point component (60) further includes the 4th
Raised (62), the described 4th raised (62) are being set to the first internal layer permanent magnet trough section (121) with the third side wall phase
To the 4th side wall on form the second limit space between the third protrusion (61) and the 4th raised (62).
11. rotor structure according to claim 9, which is characterized in that the rotor structure further includes third button point component
(70), the third button point component (70) includes the 5th raised (71), and the described 5th raised (71) are set to second internal layer
On the side wall far from the shaft hole (14) side of permanent magnet trough section (122).
12. rotor structure according to claim 11, which is characterized in that the third button point component (70) further includes the 6th
Raised (72), the described 6th raised (72) be set on the second internal layer permanent magnet trough section (122) and with the 5th protrusion
(71) it is located on the same side wall, third limit space is formed between the described 5th raised (71) and the 6th raised (72).
13. rotor structure according to claim 11, which is characterized in that the rotor structure further includes the 4th button point component
(80), the 4th button point component (80) includes the 7th raised (81), and the described 7th raised (81) are set to the third internal layer
On 5th side wall of the d-axis side far from the rotor body (10) of permanent magnet trough section (123).
14. rotor structure according to claim 13, which is characterized in that the 4th button point component (80) further includes the 8th
Raised (82), the described 8th raised (82) are being set to the third internal layer permanent magnet trough section (123) with the 5th side wall phase
To the 6th side wall on, alternatively, the 8th raised (82) are set to the close institute of the third internal layer permanent magnet trough section (123)
It is empty that the 4th limit is formed on the side wall for stating shaft hole (14) side, between the described 7th raised (81) and the 8th raised (82)
Between.
15. rotor structure according to claim 5, which is characterized in that the first end and described first of first protrusion
Side is connected, and the second end of first protrusion extends towards the second sidewall and moves closer to set at the shaft hole (14)
It sets, and/or, the first end of second protrusion is connected with the second sidewall, and the described second raised second end is towards institute
The first side wall is stated to be connected and be gradually distance from the shaft hole (14) setting.
16. rotor structure according to claim 9, which is characterized in that the rotor structure further includes permanent magnet, it is described forever
Magnet offers spacing breach (40) on the permanent magnet, and the permanent magnet includes：
Outer layer permanent magnet (20) is set in the outer layer permanent magnet trough (11), and the spacing breach (40) is opened in described outer
On at least one end of layer permanent magnet (20)；
Internal layer permanent magnet (30) is set in the internal layer permanent magnet trough (12), and the spacing breach (40) is opened in described
On at least one end of layer permanent magnet (30).
17. rotor structure according to claim 16, which is characterized in that the permanent magnet includes：
Permanent magnet ontology includes sequentially connected first surface (41), second surface at least one end of the permanent magnet ontology
(42) and third surface (43), the first surface (41) and the junction of the second surface (42) form the spacing breach
(40), the first surface (41) has with the plane where the side wall of the close first surface (41) of the permanent magnet ontology
There are included angle B, the third surface (43) and the side wall close to the third surface (43) of the permanent magnet ontology that there is angle
A, wherein B ≠ A, alternatively, A+B=180 °.
18. rotor structure according to claim 10, which is characterized in that the first button point (51) and the second button point
(52) line passes through the center of gravity of the outer layer permanent magnet (20) in the outer layer permanent magnet trough (11), and/or, the third protrusion
(61) and the line of the 4th raised (62) by the internal layer permanent magnet (30) in the internal layer permanent magnet trough (12) center of gravity.
19. rotor structure according to claim 8, which is characterized in that the internal layer permanent magnet trough (12) is at least two layers.
20. a kind of permanent magnetism assist in synchronization reluctance motor, including rotor structure, which is characterized in that the rotor structure is wanted for right
Seek the rotor structure described in any one of 1 to 19.
21. a kind of electric vehicle, including rotor structure, which is characterized in that the rotor structure is any in claim 1 to 19
Rotor structure described in.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219855.1A CN108390483B (en) | 2018-03-16 | 2018-03-16 | Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile |
| PCT/CN2018/119780 WO2019174311A1 (en) | 2018-03-16 | 2018-12-07 | Rotor structure, permanent magnet assisted synchronous reluctance motor, and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219855.1A CN108390483B (en) | 2018-03-16 | 2018-03-16 | Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108390483A true CN108390483A (en) | 2018-08-10 |
| CN108390483B CN108390483B (en) | 2020-12-15 |
Family
ID=63066632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810219855.1A Active CN108390483B (en) | 2018-03-16 | 2018-03-16 | Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108390483B (en) |
| WO (1) | WO2019174311A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019174311A1 (en) * | 2018-03-16 | 2019-09-19 | 珠海格力电器股份有限公司 | Rotor structure, permanent magnet assisted synchronous reluctance motor, and electric vehicle |
| CN112510870A (en) * | 2020-11-12 | 2021-03-16 | 珠海格力电器股份有限公司 | Motor rotor and motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113949185A (en) * | 2021-10-15 | 2022-01-18 | 浙江中车尚驰电气有限公司 | Rotor punching sheet compatible with high speed and low speed, rotor and motor thereof |
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| CN108390483B (en) * | 2018-03-16 | 2020-12-15 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, permanent magnet auxiliary synchronous reluctance motor and electric automobile |
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| WO2006047519A2 (en) * | 2004-10-26 | 2006-05-04 | Kollmorgen Corporation | Design of the magnet and webs in interior permanent magent rotors |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108390483B (en) | 2020-12-15 |
| WO2019174311A1 (en) | 2019-09-19 |
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