CN208241429U - 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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- CN208241429U CN208241429U CN201820689583.7U CN201820689583U CN208241429U CN 208241429 U CN208241429 U CN 208241429U CN 201820689583 U CN201820689583 U CN 201820689583U CN 208241429 U CN208241429 U CN 208241429U
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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 includes permanent magnet trough, and the outer edge of first end and second end towards the rotor body of permanent magnet trough is extended, and the axis hole side of middle part towards the rotor body of permanent magnet trough is projectedly arranged；Permanent magnet, permanent magnet are set in permanent magnet trough, and permanent magnet includes multiple permanent magnet segments, and the length of the permanent magnet segment of part is gradually reduced outward along the radial direction of rotor body.Setting effectively reduces the eddy-current loss of the permanent magnet of the rotor structure in this way, the axis inductor for improving rotor structure reduces the torque pulsation of rotor structure, reduces the vibration with the motor of the structure and noise, the efficiency of the motor is increased, the demagnetization capability of motor is effectively improved.
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, and permanent magnet trough group includes permanent magnet trough, the first end of permanent magnet trough and
The outer edge of two ends towards rotor body is extended, and the axis hole side of middle part towards the rotor body of permanent magnet trough is projectedly set
It sets；Permanent magnet, permanent magnet are set in permanent magnet trough, and permanent magnet includes multiple permanent magnet segments, the length of the permanent magnet segment of part
Radial direction along rotor body is gradually reduced outward.
Further, permanent magnet trough includes internal layer permanent magnet trough and outer layer permanent magnet trough, and internal layer permanent magnet trough and outer layer are forever
Magnet slot is positioned apart from outward along the radial direction of rotor body, and permanent magnet includes internal layer permanent magnet and outer layer permanent magnet, interior
Layer permanent magnet is set in internal layer permanent magnet trough, and outer layer permanent magnet is set in outer layer permanent magnet trough, internal layer permanent magnet and outer layer
Permanent magnet includes multiple permanent magnet segments.
Further, multiple permanent magnet segments include the first outer composition section, the second outer composition section and third composition section outside, and first
The outer composition section of outer composition section, the second outer composition section and third is set in turn in outer layer permanent magnetism along the radial direction of rotor body outward
In the first end of body slot, and it is located at the first side of the d-axis of rotor body, wherein the diameter along rotor body of the outer composition section of third
It is L1 to the length in direction, the length of the radial direction along rotor body of the second outer composition section is L2, the first outer composition section
Length along the radial direction of rotor body is L3, wherein L3 > L2 > L1.
Further, 1.2 × L1 of 1.2 × L2 of L3 >, L2 >.
Further, multiple permanent magnet segments further include the 4th outer composition section, the 5th outer composition section and the 6th outer composition section, and
Four outer composition sections, the 5th outer composition section and the 6th outer composition section are set in turn in outer layer forever along the radial direction of rotor body outward
In the second end of magnet slot, and it is located at second side opposite with the first side of d-axis of rotor body, wherein the 6th outer composition section
The length of the radial direction along rotor body be L4, the length of the radial direction along rotor body of the 5th outer composition section is
L5, the length of the radial direction along rotor body of the 4th outer composition section are L6, wherein L6 > L5 > L4.
Further, 1.2 × L4 of 1.2 × L5 of L6 >, L5 >.
Further, the multiple permanent magnet segments being set in internal layer permanent magnet trough include arc-shaped permanent magnet section, arcuate permanent magnetic
Body section is set to the middle part of internal layer permanent magnet trough, and the curved portion of arc-shaped permanent magnet section is projectedly arranged towards axis hole side, wherein
Multiple permanent magnet segments further include being set to the first end of arc-shaped permanent magnet section to the groove body between the first end of internal layer permanent magnet trough
Permanent magnet composition section and multiple permanent magnet segments further include being set to the second end of arc-shaped permanent magnet section extremely in interior multiple first
Permanent magnet composition section in slot intracorporal multiple second between the second end of internal layer permanent magnet trough, in multiple first set of permanent magnets at
The number of section is greater than the number for the permanent magnet segment being set in the first end in outer layer permanent magnet trough, and/or, in multiple second forever
The number of magnet composition section is greater than the number for the permanent magnet segment being set in the second end in outer layer permanent magnet trough.
Further, first is provided with every magnetic between permanent magnet composition section in the first end of arc-shaped permanent magnet section and first
The second magnetic bridge is provided between permanent magnet composition section in the second end and second of bridge and/or arc-shaped permanent magnet section.
Further, buffer structure and/or permanent magnet segment and permanent magnet trough are provided between two adjacent permanent magnets section
Buffer structure is provided between cell wall.
Further, buffer structure is rubber, resin or spring.
Further, the first card for separating two adjacent permanent magnet segments is provided on the first cell wall of permanent magnet trough
Point is provided with the second card for separating two adjacent permanent magnet segments on second cell wall opposite with the first cell wall of permanent magnet trough
Point, the first stuck point are shifted to install with the second stuck point.
Further, the line between adjacent the first stuck point and the second stuck point is located on the diagonal line of permanent magnet segment.
Further, multiple permanent magnet segments include the first outer composition section, the second outer composition section, third outer composition section, the 4th
Outer composition section, the 5th outer composition section and the 6th outer composition section, wherein the outer group of the first outer composition section, the second outer composition section and third
It gradually increases and/or the 4th outer composition section, forms outside the 5th along the radial direction of rotor body at the width of at least one in section
The width of at least one in section and the 6th outer composition section is gradually increased along the radial direction of rotor body.
Further, the permanent magnet in the second end of the first end of internal layer permanent magnet trough and/or internal layer permanent magnet trough
The width of section is gradually increased along the radial direction of rotor body.
Further, permanent magnet trough further includes middle layer permanent magnet trough, and middle layer permanent magnet trough is set to internal layer permanent magnet
Between slot and outer layer permanent magnet trough.
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 a kind of electric car, including rotor structure, and rotor structure is upper
State rotor structure.
Using the technical solution of the utility model, the length of the permanent magnet segment of part is arranged to the radial direction along rotor body
The mode that direction is gradually reduced outward effectively reduces the eddy-current loss of the permanent magnet of the rotor structure, improves rotor structure
Axis inductor, reduce the torque pulsation of rotor structure, reduce the vibration with the motor of the structure and noise, increase the electricity
The efficiency of machine effectively improves the demagnetization capability of motor.
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.
Wherein, the above drawings include the following reference numerals:
10, rotor body；11, internal layer permanent magnet trough；12, outer layer permanent magnet trough；13, axis hole；
21, the first outer composition section；22, the second outer composition section；23, the outer composition section of third；24, the 4th outer composition section；25,
Five outer composition sections；26, the 6th outer composition section；
31, arc-shaped permanent magnet section；32, permanent magnet segment；33, permanent magnet segment；34, permanent magnet segment；35, permanent magnet segment；36, forever
Magnet segment；37, permanent magnet segment；38, permanent magnet segment；39, permanent magnet segment；
41, the first magnetic bridge；42, the second magnetic bridge；
51, the first stuck point；52, the second stuck point.
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. 3, embodiment according to the present utility model provides a kind of rotor structure.
Specifically, as shown in Figure 1, rotor structure includes rotor body 10 and permanent magnet.It is provided with forever on rotor body 10
Magnet slot group, permanent magnet trough group include permanent magnet trough.The first end and second end of permanent magnet trough is towards the outside of rotor body 10
Along being extended, 13 side of axis hole of middle part towards the rotor body 10 of permanent magnet trough is projectedly arranged.Permanent magnet is set to forever
In magnet slot, permanent magnet includes multiple permanent magnet segments, the length of the permanent magnet segment of part along rotor body 10 radial direction to
It is gradually reduced outside.
In the present embodiment, by the length of the permanent magnet segment of part be arranged to along rotor body 10 radial direction outward by
Decrescence small mode effectively reduces the eddy-current loss of the permanent magnet of the rotor structure, improves the axis inductor of rotor structure,
The torque pulsation of rotor structure is reduced, the vibration with the motor of the structure and noise is reduced, increases the efficiency of the motor, have
Improve to effect the demagnetization capability of motor.
Wherein, permanent magnet trough includes internal layer permanent magnet trough 11 and outer layer permanent magnet trough 12.Internal layer permanent magnet trough 11 and outer layer
Permanent magnet trough 12 is positioned apart from outward along the radial direction of rotor body 10.Permanent magnet includes internal layer permanent magnet and outer layer permanent magnetism
Body, internal layer permanent magnet are set in internal layer permanent magnet trough 11, and outer layer permanent magnet is set in outer layer permanent magnet trough 12, internal layer permanent magnetism
Body and outer layer permanent magnet include multiple permanent magnet segments.
Further, as depicted in figs. 1 and 2, multiple permanent magnet segments include the first outer composition section 21, the second outer composition section 22
With composition section 23 outside third, the outer composition section 23 of the first outer composition section 21, the second outer composition section 22 and third is along rotor body 10
Radial direction is set in turn in outward in the first end of outer layer permanent magnet trough 12, and first of the d-axis d positioned at rotor body 10
Side, wherein the length of the radial direction along rotor body 10 of the outer composition section 23 of third is L1, and the edge of the second outer composition section 22 turns
The length of the radial direction of sub- ontology 10 is L2, and the length of the radial direction along rotor body 10 of the first outer composition section 21 is
L3, wherein L3 > L2 > L1.Preferably, 1.2 × L1 of 1.2 × L2 of L3 >, L2 >.Setting can be reduced inside permanent magnet in this way
Eddy-current loss, promoted have the rotor structure motor efficiency.
Multiple permanent magnet segments further include the 4th outer composition section 24, the 5th outer composition section 25 and the 6th outer composition section 26, and the 4th
Outer composition section 24, the 5th outer composition section 25 and the 6th outer composition section 26 are set in turn in outward along the radial direction of rotor body 10
In the second end of outer layer permanent magnet trough 12, and it is located at second side opposite with the first side of d-axis of rotor body 10, wherein the
The length of the radial direction along rotor body 10 of six outer composition sections 26 is L4, the 5th outer composition section 25 along rotor body 10
The length of radial direction is L5, and the length of the radial direction along rotor body 10 of the 4th outer composition section 24 is L6, wherein L6 >
L5 > L4.Preferably, 1.2 × L4 of 1.2 × L5 of L6 >, L5 >.Setting can further reduce the whirlpool inside permanent magnet in this way
Stream loss.
Wherein, the multiple permanent magnet segments being set in internal layer permanent magnet trough 11 include arc-shaped permanent magnet section 31.Arcuate permanent magnetic
Body section 31 is set to the middle part of internal layer permanent magnet trough 11, and the curved portion of arc-shaped permanent magnet section 31 is projectedly set towards 13 side of axis hole
It sets.Wherein, multiple permanent magnet segments further include being set to the first end of arc-shaped permanent magnet section 31 to the first of internal layer permanent magnet trough 11
Permanent magnet composition section and multiple permanent magnet segments further include being set to arc-shaped permanent magnet in slot intracorporal multiple first between end
Permanent magnet composition section in the second end to the slot intracorporal multiple second between the second end of internal layer permanent magnet trough 11 of section 31, it is multiple
The number of permanent magnet composition section is greater than the number for the permanent magnet segment being set in the first end in outer layer permanent magnet trough 12 in first,
The number of permanent magnet composition section is greater than the permanent magnet segment being set in the second end in outer layer permanent magnet trough 12 in multiple second
Number.As shown in Figure 1, permanent magnet composition section includes permanent magnet segment 32, permanent magnet segment 33, permanent magnet segment 34 and forever in multiple first
Magnet segment 35, permanent magnet composition section includes permanent magnet segment 36, permanent magnet segment 37, permanent magnet segment 38 and permanent magnet segment in multiple second
39.I.e. in the present embodiment, the number of fragments of rotor inner layer permanent magnet is greater than the number of fragments of outside permanent magnet, is further reduced
Eddy-current loss inside permanent magnet.
As shown in Fig. 2, be provided between permanent magnet composition section in the first end of arc-shaped permanent magnet section 31 and first first every
Magnetic bridge 41 is provided with the second magnetic bridge 42 between permanent magnet composition section in the second end of arc-shaped permanent magnet section 31 and second.Such as Fig. 1
Shown in middle f, it is provided with buffer structure between two adjacent permanent magnets section, is arranged between permanent magnet segment and the cell wall of permanent magnet trough
There is buffer structure.Wherein, buffer structure is rubber, resin or spring.It can be used to using the buffer structure with buffer function solid
Determine permanent magnet, when preventing motor from working, in rotor rotation process due to the influence of centrifugal force, vibration etc., caused by permanent magnet
The case where vibration and deviation, effectively promotes the fixed stability of permanent magnet using the structure.
As shown in figure 3, being provided with the first card for separating two adjacent permanent magnet segments on the first cell wall of permanent magnet trough
51 are put, is provided with separate two adjacent permanent magnet segments second on second cell wall opposite with the first cell wall of permanent magnet trough
Stuck point 52, the first stuck point 51 are shifted to install with the second stuck point 52.Setting can effectively improve the stability of permanent magnet in this way.Its
In, the line between adjacent the first stuck point 51 and the second stuck point 52 is located on the diagonal line of permanent magnet segment.
According to another embodiment of the application, multiple permanent magnet segments include the first outer composition section 21, the second outer composition section
22, the outer composition section 23 of third, the 4th outer composition section 24, the 5th outer composition section 25 and the 6th outer composition section 26, wherein first outer group
At at least one in composition section 23 outside section 21, the second outer composition section 22 and third width along rotor body 10 radial direction by
It is cumulative to add.The width of at least one in the 4th outer composition section 24, the 5th outer composition section 25 and the 6th outer composition section 26 is along rotor sheet
The radial direction of body 10 gradually increases.In the first end of internal layer permanent magnet trough 11 and the second end of internal layer permanent magnet trough 11
The width of permanent magnet segment is gradually increased along the radial direction of rotor body 10.Permanent magnet trough further includes middle layer permanent magnet trough, in
Interbed permanent magnet trough is set between internal layer permanent magnet trough 11 and outer layer permanent magnet trough 12.Setting can facilitate to permanent magnet in this way
It is replaced, further increases the diamagnetic performance of rotor structure.
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 (abbreviation motor) is provided.The motor includes rotor structure, and rotor structure is
Rotor structure in above-described embodiment.
Rotor structure in above-described embodiment can be also used for electric car equipment technical field, i.e., according to the utility model
Another aspect, provide a kind of electric car, including rotor structure, rotor structure is the rotor structure in above-described embodiment.
Specifically, motor includes stator and rotor, and stator includes stator core and its winding for being embedded in stator core, rotor
It is upper to contain the permanent magnet placing the slot of permanent magnet and being placed in slot, it include multilayer permanent magnet on the same magnetic pole of rotor, it can
So that motor obtains biggish reluctance torque, and there is stronger anti-demagnetization capability.Permanent magnet in same magnetic pole is towards calmly
Sub- direction polarity having the same, permanent magnet trough have the shape towards rotor inner bulge, and the both ends of permanent magnet trough are close to rotor
Outer circle, two side arms permanent magnet of the rotor in a magnetic pole is divided into multiple pieces, as shown in Figure 1, and outside rotor
The length along rotor radial direction of the permanent magnet of side is smaller, with shown in Fig. 1 and Fig. 2, outer layer permanent magnet is divided into 3 sections, from turn
The permanent magnetism body length of sub- outside inwardly is respectively L1, L2, L3, wherein L3 > L2 > L1.
Research finds that the intracorporal magnetic field alternative frequency of permanent magnetism assist in synchronization magnetic resistance motor rotor permanent magnetism is more same than traditional permanent magnetism
Step motor is bigger, and the intracorporal higher harmonic content of permanent magnetism is also more, is easy to cause in permanent magnet and biggish eddy-current loss occurs, increases
The loss of big motor, lowers the operating point of permanent magnet, and permanent magnet is also resulted under extreme case and is generated not because temperature is excessively high
Reversible demagnetization, and closer to the position of rotor outer surface, higher hamonic wave magnetic field content is higher, and the eddy-current loss of generation is also got over
Greatly, shorter by obtaining the Design of length of the radial direction in rotor body of permanent magnet in the big position of eddy-current loss, in whirlpool
Lesser position is lost in stream, Design of Permanent Magnet is obtained longer, can substantially reduce under the premise of reducing permanent magnet eddy-current loss
The number of fragments of permanent magnet promotes the anufacturability 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 (17)
1. a kind of rotor structure characterized by comprising
Rotor body (10) is provided with permanent magnet trough group on the rotor body (10), and the permanent magnet trough group includes permanent magnet
The outer edge of slot, first end and second end towards the rotor body (10) of the permanent magnet trough is extended, the permanent magnetism
The axis hole side of the middle part of body slot towards the rotor body (10) is projectedly arranged；
Permanent magnet, the permanent magnet are set in the permanent magnet trough, and the permanent magnet includes multiple permanent magnet segments, the institute of part
The length for stating permanent magnet segment is gradually reduced outward along the radial direction of the rotor body (10).
2. rotor structure according to claim 1, which is characterized in that the permanent magnet trough includes internal layer permanent magnet trough (11)
With outer layer permanent magnet trough (12), the internal layer permanent magnet trough (11) and the outer layer permanent magnet trough (12) are along rotor body (10)
Radial direction is positioned apart from outward, and the permanent magnet includes internal layer permanent magnet and outer layer permanent magnet, and the internal layer permanent magnet is set
It is placed in the internal layer permanent magnet trough (11), the outer layer permanent magnet is set in the outer layer permanent magnet trough (12), described interior
Layer permanent magnet and the outer layer permanent magnet include multiple permanent magnet segments.
3. rotor structure according to claim 2, which is characterized in that multiple permanent magnet segments include the first outer composition section
(21), the second outer composition section (22) and the outer composition section (23) of third, the first outer composition section (21), the second outer composition section
(22) and the outer composition section (23) of the third along the radial direction of the rotor body (10) is set in turn in the outer layer outward
In the first end of permanent magnet trough (12), and it is located at the first side of the d-axis of the rotor body (10), wherein the outer group of the third
At section (23) the radial direction along the rotor body (10) length be L1, the second outer composition section (22) along described
The length of the radial direction of rotor body (10) is L2, the diameter along the rotor body (10) of the first outer composition section (21)
It is L3 to the length in direction, wherein L3 > L2 > L1.
4. rotor structure according to claim 3, which is characterized in that 1.2 × L1 of L3 > 1.2 × L2, L2 >.
5. rotor structure according to claim 3 or 4, which is characterized in that multiple permanent magnet segments further include outside the 4th
Composition section (24), the 5th outer composition section (25) and the 6th outer composition section (26), the 4th outer composition section (24), outside the described 5th
Composition section (25) and the 6th outer composition section (26) are set in turn in institute along the radial direction of the rotor body (10) outward
In the second end for stating outer layer permanent magnet trough (12), and it is located at the opposite with the first side of the d-axis of the rotor body (10)
Second side, wherein the length of the radial direction along the rotor body (10) of the 6th outer composition section (26) is L4, described
The length of the radial direction along the rotor body (10) of 5th outer composition section (25) is L5, the 4th outer composition section (24)
The radial direction along the rotor body (10) length be L6, wherein L6 > L5 > L4.
6. rotor structure according to claim 5, which is characterized in that 1.2 × L4 of L6 > 1.2 × L5, L5 >.
7. according to the described in any item rotor structures of claim 2 to 4, which is characterized in that be set to the internal layer permanent magnet trough
(11) multiple permanent magnet segments in include arc-shaped permanent magnet section (31), and the arc-shaped permanent magnet section (31) is set in described
The middle part of layer permanent magnet trough (11), the curved portion of the arc-shaped permanent magnet section (31) are projectedly arranged towards the axis hole side,
Wherein, multiple permanent magnet segments further include being set to the first end of the arc-shaped permanent magnet section (31) to the internal layer permanent magnet
Permanent magnet composition section and multiple permanent magnet segments further include in slot intracorporal multiple first between the first end of slot (11)
It is set in the second end to the groove body between the second end of the internal layer permanent magnet trough (11) of the arc-shaped permanent magnet section (31)
Multiple second in permanent magnet composition section, the number of permanent magnet composition section, which is greater than, in multiple described first is set to the outer layer forever
The number of the permanent magnet segment in first end in magnet slot (12), and/or, permanent magnet composition section in multiple described second
Number is greater than the number for the permanent magnet segment being set in the second end in the outer layer permanent magnet trough (12).
8. rotor structure according to claim 7, which is characterized in that the first end of the arc-shaped permanent magnet section (31) and institute
It states and is provided with the second of the first magnetic bridge (41) and/or the arc-shaped permanent magnet section (31) in first between permanent magnet composition section
The second magnetic bridge (42) are provided between permanent magnet composition section in end and described second.
9. rotor structure according to claim 1, which is characterized in that be provided between the two neighboring permanent magnet segment slow
It rushes between structure and/or the permanent magnet segment and the cell wall of the permanent magnet trough and is provided with the buffer structure.
10. rotor structure according to claim 9, which is characterized in that the buffer structure is rubber, resin or spring.
11. rotor structure according to claim 1, which is characterized in that be provided on the first cell wall of the permanent magnet trough
The first stuck point (51) that two adjacent permanent magnet segments are separated, the permanent magnet trough it is opposite with first cell wall
Be provided with the second stuck point (52) for separating two adjacent permanent magnet segments on second cell wall, first stuck point (51) with
Second stuck point (52) shifts to install.
12. rotor structure according to claim 11, which is characterized in that adjacent first stuck point (51) and described
Line between two stuck points (52) is located on the diagonal line of the permanent magnet segment.
13. rotor structure according to claim 2, which is characterized in that multiple permanent magnet segments include forming outside first
Section (21), the second outer composition section (22), third outside composition section (23), the 4th outer composition section (24), the 5th outer composition section (25) and
6th outer composition section (26),
Wherein, in the outer composition section (23) of the described first outer composition section (21), the second outer composition section (22) and the third extremely
Few one width is gradually increased along the radial direction of the rotor body (10) and/or the 4th outer composition section (24), institute
The width of at least one in the 5th outer composition section (25) and the 6th outer composition section (26) is stated along the rotor body (10)
Radial direction gradually increases.
14. rotor structure according to claim 7, which is characterized in that be located at the first of the internal layer permanent magnet trough (11)
The width of the permanent magnet segment in the second end of end and/or the internal layer permanent magnet trough (11) is along the rotor body (10)
Radial direction gradually increases.
15. rotor structure according to claim 2, which is characterized in that the permanent magnet trough further includes middle layer permanent magnet
Slot, the middle layer permanent magnet trough are set between the internal layer permanent magnet trough (11) and the outer layer permanent magnet trough (12).
16. 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 15.
17. a kind of electric car, including rotor structure, which is characterized in that the rotor structure is any in claim 1 to 15
The item rotor structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820689583.7U CN208241429U (en) | 2018-05-08 | 2018-05-08 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820689583.7U CN208241429U (en) | 2018-05-08 | 2018-05-08 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208241429U true CN208241429U (en) | 2018-12-14 |
Family
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| CN108429374A (en) * | 2018-05-08 | 2018-08-21 | 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108429374A (en) * | 2018-05-08 | 2018-08-21 | 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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