CN208241426U - Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric car - Google Patents
Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric car Download PDFInfo
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- CN208241426U CN208241426U CN201820689498.0U CN201820689498U CN208241426U CN 208241426 U CN208241426 U CN 208241426U CN 201820689498 U CN201820689498 U CN 201820689498U CN 208241426 U CN208241426 U CN 208241426U
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Abstract
The utility model provides a kind of rotor structure, permanent magnetism assist in synchronization reluctance motor and electric car.Rotor structure includes rotor body, permanent magnet trough group is provided on rotor body, permanent magnet trough group is multiple, multiple permanent magnet trough groups are along the arranged circumferentially spaced of rotor body, multiple permanent magnet trough groups include the first permanent magnet trough group, first permanent magnet trough group includes the multiple permanent magnet troughs set gradually outward along the radial direction of rotor body, and the partial groove section of at least one permanent magnet trough is S-shaped along the cross section of rotor body radial direction in multiple permanent magnet troughs.Using the rotor structure of the program, the magnetic flux that the permanent magnet of rotor structure generates is effectively promoted, increases the electromagnetic torque under the motor unitary current with the rotor structure, increases the efficiency of motor.
Description
Technical field
The utility model relates to motor device technical fields, in particular to a kind of rotor structure, permanent magnetism assist in synchronization
Reluctance motor and electric car.
Background technique
Electric car has the characteristics that energy-saving and environmental protection, is rapidly developed.Existing driving motor for electric automobile is
Realize the functions such as high power density, the high efficiency of motor, more and more motors use high-performance rare-earth permanent-magnetic motor.Rare earth
Magneto can be realized high efficiency and high power density, depend on high performance rare-earth permanent magnet, and application is most at present
Be Fe-B rare-earth permanent magnet.But rare earth is a kind of non-renewable resources, price costly, and the fluctuation of rare earth price
Also larger, cause the production cost of driving motor for electric automobile higher, this is very not for pushing electric car development in an all-round way
Benefit.Further, ferrite permanent-magnet assist in synchronization reluctance motor is also applied to electric car, but this kind in the prior art
The problems such as there are noises for motor greatly, easily demagnetizes, low efficiency.
Utility model content
The main purpose of the utility model is to provide a kind of rotor structure, permanent magnetism assist in synchronization reluctance motor and electronic vapour
Vehicle, to solve the problems, such as that electric efficiency is low in the prior art.
To achieve the goals above, one aspect according to the present utility model provides a kind of rotor structure, comprising: turns
Sub- ontology, is provided with permanent magnet trough group on rotor body, permanent magnet trough group be it is multiple, multiple permanent magnet trough groups are along rotor body
Arranged circumferentially spaced, multiple permanent magnet trough groups include the first permanent magnet trough group, and the first permanent magnet trough group includes along rotor body
Multiple permanent magnet troughs for setting gradually outward of radial direction, the partial groove section of at least one permanent magnet trough in multiple permanent magnet troughs
Cross section along rotor body radial direction is S-shaped.
Further, multiple permanent magnet troughs include the first internal layer permanent magnet trough, and the first internal layer permanent magnet trough includes: the first slot
The axis hole of section, the first end of the first slot section towards rotor body extends, and the second end of the first slot section is towards the outside of rotor body
There is distance it is arranged along extension and with the outer edge of rotor body；Second slot section, the first end of the second slot section and the first slot section
First end be connected, the second slot section is extended along the d-axis direction perpendicular to rotor body；Third slot section, third slot section
First end is connected with the second end of the second slot section, the outer edge of the second end of third slot section towards rotor body extend and with turn
The outer edge of sub- ontology has the setting of distance ground, and the first slot section is oppositely disposed with third slot section；Wherein, the first slot section and/or
Third slot section is S-shaped along the cross section of rotor body radial direction.
Further, the first internal layer permanent magnet trough is multiple, radial direction of multiple first internal layer permanent magnet troughs along rotor body
Direction is positioned apart from.
Further, multiple permanent magnet troughs further include: outer layer permanent magnet trough, outer layer permanent magnet trough and the first internal layer permanent magnet
Slot is positioned apart from and is located at the outside of the first internal layer permanent magnet trough.
Further, multiple permanent magnet trough groups include the second permanent magnet trough group, and the second permanent magnet trough group includes multiple permanent magnetism
Body slot, multiple permanent magnet troughs include the second internal layer permanent magnet trough, and the second internal layer permanent magnet trough includes: the 4th slot section, the 4th slot section
The axis hole of first end towards rotor body extend, the outer edge of the second end of the 4th slot section towards rotor body extend and with turn
The outer edge of sub- ontology has the setting of distance ground, and the 4th slot section is disposed adjacently with third slot section；5th slot section, the 5th slot section
First end is connected with the first end of the 4th slot section, and the 5th slot section is extended along the d-axis direction perpendicular to rotor body；The
Six slot sections, the first end of the 6th slot section are connected with the second end of the 5th slot section, and the second end of the 6th slot section is towards rotor body
Outer edge extend and with the outer edge of rotor body have distance be arranged, six slot section of the 4th slot Duan Yu is oppositely disposed；
Wherein, the 4th slot section and/or the 6th slot section are S-shaped along the cross section of rotor body radial direction.
Further, third slot section is S-shaped along the cross section of rotor body radial direction, and the 4th slot section is along rotor body diameter
Cross section to direction is S-shaped, and tetra- slot section of third slot Duan Yu is symmetrically arranged about the quadrature axis of rotor body.
Further, rotor structure further includes connecting hole, and connecting hole is set to the recess portion phase of third slot section and the 4th slot section
Pair position at.
Further, permanent magnet is provided in each permanent magnet trough, permanent magnet is along at least portion of rotor body radial direction
The cross section divided is C-shaped.
Further, permanent magnet includes internal layer permanent magnet, and internal layer permanent magnet includes: the first permanent magnet segment, the first permanent magnet
Section is set in the second end of the first slot section, and the first permanent magnet segment is C-shaped along the cross section of the radial direction of rotor body；Second
Permanent magnet segment, the second permanent magnet segment are set in the first end of the first slot section, and the second permanent magnet segment is along the radial direction side of rotor body
To cross section it is C-shaped, the bending direction of the first permanent magnet segment is opposite with the bending direction of the second permanent magnet segment.
Further, internal layer permanent magnet further include: third permanent magnet segment, third permanent magnet segment are set to the of third slot section
It is oppositely disposed in two ends and with the first permanent magnet segment, third permanent magnet segment is in C along the cross section of the radial direction of rotor body
Shape；4th permanent magnet segment, the 4th permanent magnet segment are set in the first end of third slot section and relatively set with the second permanent magnet segment
It sets, the 4th permanent magnet segment is C-shaped along the cross section of the radial direction of rotor body, the bending direction of third permanent magnet segment and the 4th
The bending direction of permanent magnet segment is opposite.
Further, the structure of the first permanent magnet segment is identical as the structure of the second permanent magnet segment and/or third permanent magnet segment
Structure is identical as the structure of the 4th permanent magnet segment and/or the structure phase of the structure of the first permanent magnet segment and the 4th permanent magnet segment
Together.
Further, permanent magnet includes internal layer permanent magnet, and internal layer permanent magnet includes: the first permanent magnet segment, the first permanent magnet
Section is set in the second end of the first slot section, and the first permanent magnet segment is C-shaped along the cross section of the radial direction of rotor body；Second
Permanent magnet segment, the second permanent magnet segment are set in the second slot section, and the first end of the second permanent magnet segment extends to the first slot section
In first end, the second end of the second permanent magnet segment is extended in the first end of third slot section, and the second permanent magnet segment is along rotor body
Radial direction cross section it is C-shaped；Third permanent magnet segment, third permanent magnet segment be set in the second end of third slot section and with
First permanent magnet segment is oppositely disposed, and third permanent magnet segment is C-shaped along the cross section of the radial direction of rotor body.
Further, the protrusion of the first permanent magnet segment and third permanent magnet segment is arranged towards d-axis, the first permanent magnet segment
It is identical with the structure of third permanent magnet segment.
Further, the first permanent magnet segment, the second permanent magnet segment and third permanent magnet segment are symmetrically arranged about d-axis.
Further, multiple permanent magnet troughs include outer layer permanent magnet trough, and permanent magnet includes outer layer permanent magnet, outer layer permanent magnet
It is set in outer layer permanent magnet trough, the cross section of the radial direction along rotor body of the outer layer permanent magnet of part is C-shaped.
Further, thickness of the permanent magnet along the in C-shaped configuration middle part in the cross section of the radial direction of rotor body is greater than C
The thickness at the both ends of shape structure.
Another aspect according to the present utility model provides a kind of permanent magnetism assist in synchronization reluctance motor, including rotor structure,
Rotor structure is above-mentioned rotor structure.
Another aspect according to the present utility model, provides electric car, including rotor structure, and rotor structure is above-mentioned turn
Minor structure.
Rotor structure is effectively promoted using the rotor structure of the program using the technical solution of the utility model
The magnetic flux that permanent magnet generates, increases the electromagnetic torque under the motor unitary current with the rotor structure, increases motor
Efficiency.And when can be effectively prevented motor work, since the influences such as centrifugal force, vibration cause permanent magnetism in rotor rotation process
The vibration and deviation of body then significantly reduce permanent magnet mobile bring electromagnetic noise in slot.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the first embodiment of rotor structure according to the present utility model；
Fig. 2 shows the structural schematic diagrams of the second embodiment of rotor structure according to the present utility model；
Fig. 3 shows the structural schematic diagram of the 3rd embodiment of rotor structure according to the present utility model；
Fig. 4 shows the structural schematic diagram of the fourth embodiment of rotor structure according to the present utility model.
Wherein, the above drawings include the following reference numerals:
10, rotor body；11, the first slot section；12, the second slot section；13, third slot section；14, outer layer permanent magnet trough；15, axis
Hole；
20, the second internal layer permanent magnet trough；21, the 4th slot section；22, the 5th slot section；23, the 6th slot section；
30, permanent magnet；31, the first permanent magnet segment；32, the second permanent magnet segment；33, third permanent magnet segment；34, the 4th permanent magnetism
Body section；
40, connecting hole.
Specific embodiment
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 utility model will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It should be noted that term " first ", " second " etc. in the description and claims of this application and attached drawing
It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the art used in this way
Language is interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to illustrating herein
Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary
Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein
Formula.It should be understood that it is thoroughly and complete to these embodiments are provided so that disclosure herein, and these are shown
The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand
The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them
It states.
In conjunction with shown in Fig. 1 to Fig. 4, embodiment according to the present utility model provides a kind of rotor structure.
Specifically, as shown in Figure 1, the rotor structure includes rotor body 10.Permanent magnet trough is provided on rotor body 10
Group, permanent magnet trough group be it is multiple, multiple permanent magnet trough groups are arranged circumferentially spaced along rotor body 10, multiple permanent magnet trough groups
Including the first permanent magnet trough group, the first permanent magnet trough group include along rotor body 10 radial direction set gradually outward it is multiple
Permanent magnet trough, the partial groove section of at least one permanent magnet trough is along the cross section of 10 radial direction of rotor body in multiple permanent magnet troughs
It is S-shaped.
In the present embodiment, using the rotor structure of the program, the permanent magnet generation of rotor structure is effectively promoted
Magnetic flux increases the electromagnetic torque under the motor unitary current with the rotor structure, increases the efficiency of motor.And it can be with
When being effectively prevented motor work, since the influences such as centrifugal force, vibration cause the vibration of permanent magnet and inclined in rotor rotation process
From then significantly reducing permanent magnet mobile bring electromagnetic noise in slot.
Wherein, multiple permanent magnet troughs include the first internal layer permanent magnet trough.First internal layer permanent magnet trough include the first slot section 11,
Second slot section 12 and third slot section 13.The axis hole of the first end of first slot section 11 towards rotor body 10 extends, the first slot section 11
Second end towards rotor body 10 outer edge extend and with the outer edge of rotor body 10 have distance be arranged.Second slot
The first end of section 12 is connected with the first end of the first slot section 11.Second slot section 12 is along the d-axis direction perpendicular to rotor body 10
It is extended.The first end of third slot section 13 is connected with the second end of the second slot section 12, the second end direction of third slot section 13
The outer edge of rotor body 10 extends and is arranged with having distance with the outer edge of rotor body 10, the first slot section 11 and third slot
Section 13 is oppositely disposed.Wherein, the first slot section 11 and/or third slot section 13 are in S along the cross section of 10 radial direction of rotor body
Shape.Setting can effectively improve the performance of the rotor structure in this way.
In order to further improve the performance of rotor structure, it can set multiple for the first internal layer permanent magnet trough, it is multiple
First internal layer permanent magnet trough is positioned apart from along the radial direction of rotor body 10.
Multiple permanent magnet troughs further include outer layer permanent magnet trough 14.Outer layer permanent magnet trough 14 and the first internal layer permanent magnet trough interval
Ground is arranged and is located at the outside of the first internal layer permanent magnet trough.
Wherein, multiple permanent magnet trough groups include the second permanent magnet trough group.Second permanent magnet trough group includes multiple permanent magnet troughs,
Multiple permanent magnet troughs include the second internal layer permanent magnet trough 20.Second internal layer permanent magnet trough 20 includes the 4th slot section 21, the 5th slot section
22 and the 6th slot section 23.The axis hole of the first end of 4th slot section 21 towards rotor body 10 extends, the second end of the 4th slot section 21
Extend towards the outer edge of rotor body 10 and is arranged while there is distance with the outer edge of rotor body 10.4th slot section 21 and
Three slot sections 13 are disposed adjacently.The first end of 5th slot section 22 is connected with the first end of the 4th slot section 21,22 edge of the 5th slot section
It is extended perpendicular to the d-axis direction of rotor body 10.The first end of 6th slot section 23 is connected with the second end of the 5th slot section 22
Logical, the outer edge of second end towards the rotor body 10 of the 6th slot section 23 extends and has distance with the outer edge of rotor body 10
Ground setting, the 4th slot section 21 are oppositely disposed with the 6th slot section 23；Wherein, the 4th slot section 21 and/or the 6th slot section 23 are along rotor
The cross section of 10 radial direction of ontology is S-shaped.
Preferably, third slot section 13 is S-shaped along the cross section of 10 radial direction of rotor body, and the 4th slot section 21 is along rotor sheet
The cross section of 10 radial direction of body is S-shaped, and quadrature axis of the third slot section 13 with the 4th slot section 21 about rotor body 10 is symmetrically set
It sets.
In order to improve the stability of rotor structure, rotor structure further includes connecting hole 40.Connecting hole 40 is set to third slot
At the opposite position of the recess portion of section 13 and the 4th slot section 21, wherein be protrusion at f2, d is straight as shown in Figure 1, being recess portion at f1
Axis, q are quadrature axis.
As shown in Figures 2 and 3, permanent magnet 30 is provided in each permanent magnet trough.Permanent magnet 30 is radial along rotor body 10
At least part of cross section in direction is C-shaped.Permanent magnet 30 includes internal layer permanent magnet.Internal layer permanent magnet includes the first permanent magnet segment
31 and second permanent magnet segment 32.First permanent magnet segment 31 is set in the second end of the first slot section 11,31 edge of the first permanent magnet segment
The cross section of the radial direction of rotor body 10 is C-shaped.Second permanent magnet segment 32 is set in the first end of the first slot section 11, the
Two permanent magnet segments 32 are C-shaped along the cross section of the radial direction of rotor body 10, the bending direction of the first permanent magnet segment 31 and
The bending direction of two permanent magnet segments 32 is opposite.
Internal layer permanent magnet further includes third permanent magnet segment 33 and the 4th permanent magnet segment 34.Third permanent magnet segment 33 is set to
It is oppositely disposed in the second end of three slot sections 13 and with the first permanent magnet segment 31, diameter of the third permanent magnet segment 33 along rotor body 10
Cross section to direction is C-shaped.4th permanent magnet segment 34 be set in the first end of third slot section 13 and with the second permanent magnet segment
32 are oppositely disposed, and the 4th permanent magnet segment 34 is C-shaped along the cross section of the radial direction of rotor body 10, third permanent magnet segment 33
Bending direction it is opposite with the bending direction of the 4th permanent magnet segment 34.
Wherein it is preferred to the structure of the first permanent magnet segment 31 is identical as the structure of the second permanent magnet segment 32, third permanent magnet
The structure of section 33 is identical as the structure of the 4th permanent magnet segment 34, the structure of the first permanent magnet segment 31 and the knot of the 4th permanent magnet segment 34
Structure is identical.
As shown in figure 4, permanent magnet 30 includes internal layer permanent magnet, internal layer permanent magnetism according in another embodiment of the application
Body includes the first permanent magnet segment 31, the second permanent magnet segment 32 and third permanent magnet segment 33.First permanent magnet segment 31 is set to first
In the second end of slot section 11.First permanent magnet segment 31 is C-shaped along the cross section of the radial direction of rotor body 10.Second permanent magnet
Section 32 is set in the second slot section 12, and the first end of the second permanent magnet segment 32 extends in the first end of the first slot section 11, the
The second end of two permanent magnet segments 32 extends in the first end of third slot section 13, diameter of second permanent magnet segment 32 along rotor body 10
Cross section to direction is C-shaped.Third permanent magnet segment 33 be set in the second end of third slot section 13 and with the first permanent magnet segment
31 are oppositely disposed, and third permanent magnet segment 33 is C-shaped along the cross section of the radial direction of rotor body 10.Wherein, Fig. 3 and Fig. 4
In illustrate only the structure of permanent magnet, the structure of magnetic slot is not shown.
As shown in figure 4, the protrusion of the first permanent magnet segment 31 and third permanent magnet segment 33 is arranged towards d-axis, the first permanent magnetism
Body section 31 is identical with the structure of third permanent magnet segment 33.Setting can effectively improve the performance of the rotor structure in this way.It is preferred that
Ground, the first permanent magnet segment 31, the second permanent magnet segment 32 and third permanent magnet segment 33 are symmetrically arranged about d-axis.
Multiple permanent magnet troughs include outer layer permanent magnet trough 14, and permanent magnet 30 includes outer layer permanent magnet, the setting of outer layer permanent magnet
In in outer layer permanent magnet trough 14, the cross section of the radial direction along rotor body 10 of the outer layer permanent magnet of part is C-shaped (as schemed
In 4 shown in f3).Setting can be effectively prevented from rotor structure generation leakage field in this way.
As shown in Fig. 2, thickness of the permanent magnet 30 along the in C-shaped configuration middle part in the cross section of the radial direction of rotor body 10
Greater than the thickness at the both ends of C-shaped configuration.Setting can be further reduced permanent magnet and move in slot in this way, lower motor electromagnetic and make an uproar
Sound.
Rotor structure in above-described embodiment can be also used for motor device technical field, i.e., according to the present utility model another
On the one hand, a kind of permanent magnetism assist in synchronization reluctance motor (hereinafter referred to as motor) is provided.The motor includes rotor structure, rotor knot
Structure is the rotor structure in above-described embodiment.
Rotor structure in above-described embodiment can be also used for electric vehicle devices technical field, i.e., according to the present utility model
On the other hand, a kind of electric car is provided.The electric vehicle includes rotor structure.Rotor structure is the rotor in above-described embodiment
Structure.
It specifically, include multilayer permanent magnet on the same magnetic pole of rotor structure, the permanent magnet in same magnetic pole is towards stator
Direction polarity having the same, permanent magnet trough have the shape towards 15 side of the axis hole protrusion of rotor, the permanent magnet of rotor structure
One section of slot is substantially S-type, has 2 protrusions and recessed shape in S type.It, can be with by the way that permanent magnet trough is arranged to S type
Under identical rotor sectional area, so that the area that permanent magnet provides magnetic flux is bigger, the permanent magnet flux linkage of motor is increased, is improved
The efficiency of motor, and permanent magnet can be effectively prevented due to bearing shifting of the alternating electromagnetic force in slot in the permanent magnet trough of S type
It is dynamic, reduce the mobile bring electromagnetic noise of permanent magnet.
Each magnetic pole boundary line position of rotor structure has the region gradually amplified surrounded by permanent magnet, in the area
Rotor punching connecting hole is provided in domain.By the region for forming an amplification, it is possible to reduce rotor punching connecting hole is to rotor
The blocking of magnetic flux improves the electromagnetic torque under motor unitary current so that the magnetic line of force is more smooth.
Tool is there are two c-type permanent magnet in the permanent magnet trough of one S type of rotor structure, by two c-type set of permanent magnets at
One substantially S-type permanent magnet, can effectively reduce the manufacturing cost of permanent magnet.It can be by the centre of all c-type permanent magnets
Part thickness is set greater than two-end part thickness.Permanent magnet can be further reduced to move in slot, lower motor electromagnetic and make an uproar
Sound.In rotor same layer permanent magnet trough, two c-type permanent magnets of composition S type permanent magnet are of similar shape, it is possible to reduce no
The number of similar shape permanent magnet reduces the manufacturing cost of permanent magnet.
In the same layer permanent magnet trough of rotor structure, centre has a c-type permanent magnet, and there are two shape is identical for two sides tool
C-type permanent magnet.The number of permanent magnet can be reduced, reduce permanent magnet manufacturing cost and permanent magnet assembly difficulty.
In this application, include multilayer permanent magnet on the same magnetic pole of rotor structure, motor can be made to obtain larger
Reluctance torque, and have stronger anti-demagnetization capability.Permanent magnet in same magnetic pole is towards stator direction pole having the same
Property, for permanent magnet trough tool towards the shape of rotor inner bulge, one section of rotor permanent magnet slot is substantially S-type, has 2 in S type
Raised and recessed shape.It, can be under identical rotor sectional area, so that permanent magnet by the way that permanent magnet trough is arranged to S type
The area for providing magnetic flux is bigger, increases the permanent magnet flux linkage of motor, can also in ferrite permanent magnet lower using remanent magnetism
So that rotor generates biggish air-gap flux, the output torque under motor unitary current is improved, the winding of motor is reduced
Loss improves the efficiency of motor, and the permanent magnet trough of S type can be effectively prevented permanent magnet and exist due to bearing alternating electromagnetic force
Movement in slot reduces the mobile bring electromagnetic noise of permanent magnet.
Wherein, each magnetic pole of rotor boundary line position have that an internal layer permanent magnet trough by two neighboring magnetic pole surrounds by
Gradually magnification region is provided with rotor punching connecting hole in the area.By the region for forming an amplification, it is possible to reduce rotor
Blocking of the punching connecting hole to rotor flux improves the electromagnetic torque under motor unitary current so that the magnetic line of force is more smooth.
As shown in figure 4, the surface area of intermediate c-type permanent magnet is greater than the surface area of two sides c-type permanent magnet, it can be identical
Under rotor, increases the total surface area of single layer permanent magnet, promote the magnetic flux output quantity of permanent magnet, increase the efficiency of motor.
Than that described above, it is also necessary to which explanation is " one embodiment " spoken of in the present specification, " another implementation
Example ", " embodiment " etc. refer to that specific features, structure or the feature of embodiment description is combined to be included in the application summary
Property description at least one embodiment in.It is not centainly to refer to the same reality that statement of the same race, which occur, in multiple places in the description
Apply example.Furthermore, it is understood that is advocated is knot when describing a specific features, structure or feature in conjunction with any embodiment
Other embodiments are closed to realize that this feature, structure or feature are also fallen in the scope of the utility model.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (18)
1. a kind of rotor structure characterized by comprising
Rotor body (10), is provided with permanent magnet trough group on the rotor body (10), the permanent magnet trough group be it is multiple, it is multiple
The permanent magnet trough group is arranged circumferentially spaced along the rotor body (10), and multiple permanent magnet trough groups include first forever
Magnet slot group, first permanent magnet trough group include along the rotor body (10) radial direction set gradually outward it is multiple
Permanent magnet trough, the partial groove section of at least one permanent magnet trough is along the rotor body (10) diameter in multiple permanent magnet troughs
Cross section to direction is S-shaped.
2. rotor structure according to claim 1, which is characterized in that multiple permanent magnet troughs include the first internal layer permanent magnetism
Body slot, the first internal layer permanent magnet trough include:
The axis hole of first slot section (11), first end towards the rotor body (10) of the first slot section (11) extends, described
The outer edge of the second end of first slot section (11) towards the rotor body (10) extends and outer with the rotor body (10)
Edge has the setting of distance ground；
Second slot section (12), the first end of the second slot section (12) are connected with the first end of the first slot section (11), institute
The second slot section (12) is stated to be extended along the d-axis direction perpendicular to the rotor body (10)；
Third slot section (13), the first end of the third slot section (13) are connected with the second end of the second slot section (12), institute
The outer edge for stating the second end of third slot section (13) towards the rotor body (10) extend and with the rotor body (10)
Outer edge has the setting of distance ground, and the first slot section (11) is oppositely disposed with the third slot section (13)；
Wherein, the cross of the first slot section (11) and/or the third slot section (13) along the rotor body (10) radial direction
Section is S-shaped.
3. rotor structure according to claim 2, which is characterized in that the first internal layer permanent magnet trough be it is multiple, it is multiple
The first internal layer permanent magnet trough is positioned apart from along the radial direction of the rotor body (10).
4. rotor structure according to claim 2 or 3, which is characterized in that multiple permanent magnet troughs further include:
Outer layer permanent magnet trough (14), the outer layer permanent magnet trough (14) and the first internal layer permanent magnet trough are positioned apart from and position
In the outside of the first internal layer permanent magnet trough.
5. rotor structure according to claim 2 or 3, which is characterized in that multiple permanent magnet trough groups include second forever
Magnet slot group, second permanent magnet trough group include multiple permanent magnet troughs, and multiple permanent magnet troughs include the second internal layer permanent magnetism
Body slot (20), the second internal layer permanent magnet trough (20) include:
The axis hole of 4th slot section (21), first end towards the rotor body (10) of the 4th slot section (21) extends, described
The outer edge of the second end of 4th slot section (21) towards the rotor body (10) extends and outer with the rotor body (10)
Edge has the setting of distance ground, and the 4th slot section (21) is disposed adjacently with the third slot section (13)；
The first end of 5th slot section (22), the 5th slot section (22) is connected with the first end of the 4th slot section (21), institute
The 5th slot section (22) is stated to be extended along the d-axis direction perpendicular to the rotor body (10)；
The first end of 6th slot section (23), the 6th slot section (23) is connected with the second end of the 5th slot section (22), institute
The outer edge for stating the second end of the 6th slot section (23) towards the rotor body (10) extend and with the rotor body (10)
Outer edge has the setting of distance ground, and the 4th slot section (21) is oppositely disposed with the 6th slot section (23)；
Wherein, the cross of the 4th slot section (21) and/or the 6th slot section (23) along the rotor body (10) radial direction
Section is S-shaped.
6. rotor structure according to claim 5, which is characterized in that the third slot section (13) is along the rotor body
(10) cross section of radial direction is S-shaped, and the 4th slot section (21) is along the cross section of the rotor body (10) radial direction
S-shaped, the third slot section (13) is symmetrically arranged with the 4th slot section (21) about the quadrature axis of the rotor body (10).
7. rotor structure according to claim 6, which is characterized in that the rotor structure further includes connecting hole (40), institute
Connecting hole (40) is stated to be set at the opposite position of recess portion of the third slot section (13) and the 4th slot section (21).
8. rotor structure according to claim 2 or 3, which is characterized in that be provided with permanent magnetism in each permanent magnet trough
Body (30), the permanent magnet (30) are C-shaped along at least part of cross section of the rotor body (10) radial direction.
9. rotor structure according to claim 8, which is characterized in that the permanent magnet (30) includes internal layer permanent magnet, institute
Stating internal layer permanent magnet includes:
First permanent magnet segment (31), first permanent magnet segment (31) are set in the second end of the first slot section (11), institute
It is C-shaped along the cross section of the radial direction of the rotor body (10) to state the first permanent magnet segment (31)；
Second permanent magnet segment (32), second permanent magnet segment (32) are set in the first end of the first slot section (11), institute
It is C-shaped along the cross section of the radial direction of the rotor body (10) to state the second permanent magnet segment (32), first permanent magnet segment
(31) bending direction is opposite with the bending direction of second permanent magnet segment (32).
10. rotor structure according to claim 9, which is characterized in that the internal layer permanent magnet further include:
Third permanent magnet segment (33), the third permanent magnet segment (33) be set in the second end of the third slot section (13) and with
First permanent magnet segment (31) is oppositely disposed, radial direction side of the third permanent magnet segment (33) along the rotor body (10)
To cross section it is C-shaped；
4th permanent magnet segment (34), the 4th permanent magnet segment (34) be set in the first end of the third slot section (13) and with
Second permanent magnet segment (32) is oppositely disposed, radial direction side of the 4th permanent magnet segment (34) along the rotor body (10)
To cross section it is C-shaped, the bending side of the bending direction of the third permanent magnet segment (33) and the 4th permanent magnet segment (34)
To opposite.
11. rotor structure according to claim 10, which is characterized in that
The structure of first permanent magnet segment (31) is identical as the structure of second permanent magnet segment (32), and/or
The structure of the third permanent magnet segment (33) is identical as the structure of the 4th permanent magnet segment (34), and/or
The structure of first permanent magnet segment (31) is identical as the structure of the 4th permanent magnet segment (34).
12. rotor structure according to claim 8, which is characterized in that the permanent magnet (30) includes internal layer permanent magnet, institute
Stating internal layer permanent magnet includes:
First permanent magnet segment (31), first permanent magnet segment (31) are set in the second end of the first slot section (11), institute
It is C-shaped along the cross section of the radial direction of the rotor body (10) to state the first permanent magnet segment (31)；
Second permanent magnet segment (32), second permanent magnet segment (32) are set in the second slot section (12), and described second
The first end of permanent magnet segment (32) extends in the first end of the first slot section (11), and the of second permanent magnet segment (32)
Two ends extend in the first end of the third slot section (13), and second permanent magnet segment (32) is along the rotor body (10)
The cross section of radial direction is C-shaped；
Third permanent magnet segment (33), the third permanent magnet segment (33) be set in the second end of the third slot section (13) and with
First permanent magnet segment (31) is oppositely disposed, radial direction side of the third permanent magnet segment (33) along the rotor body (10)
To cross section it is C-shaped.
13. rotor structure according to claim 12, which is characterized in that first permanent magnet segment (31) and the third
The protrusion of permanent magnet segment (33) is arranged towards the d-axis, first permanent magnet segment (31) and the third permanent magnet segment
(33) structure is identical.
14. rotor structure according to claim 12, which is characterized in that first permanent magnet segment (31), described second
Permanent magnet segment (32) and the third permanent magnet segment (33) are symmetrically arranged about the d-axis.
15. rotor structure according to claim 8, which is characterized in that multiple permanent magnet troughs include outer layer permanent magnet
Slot (14), the permanent magnet (30) includes outer layer permanent magnet, and the outer layer permanent magnet is set to the outer layer permanent magnet trough (14)
Interior, the cross section of the radial direction along the rotor body (10) of the outer layer permanent magnet of part is C-shaped.
16. rotor structure according to claim 8, which is characterized in that the permanent magnet (30) is along the rotor body
(10) thickness at the in C-shaped configuration middle part in the cross section of radial direction is greater than the thickness at the both ends of C-shaped configuration.
17. 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
Rotor structure described in asking any one of 1 to 16.
18. a kind of electric car, including rotor structure, which is characterized in that the rotor structure is any in claim 1 to 16
The item rotor structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820689498.0U CN208241426U (en) | 2018-05-08 | 2018-05-08 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820689498.0U CN208241426U (en) | 2018-05-08 | 2018-05-08 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric car |
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| CN208241426U true CN208241426U (en) | 2018-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683278A (en) * | 2018-05-08 | 2018-10-19 | 珠海格力电器股份有限公司 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric vehicle |
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2018
- 2018-05-08 CN CN201820689498.0U patent/CN208241426U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683278A (en) * | 2018-05-08 | 2018-10-19 | 珠海格力电器股份有限公司 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric vehicle |
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