CN214707337U - Sectional dislocation type permanent magnet motor rotor - Google Patents
Sectional dislocation type permanent magnet motor rotor Download PDFInfo
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- CN214707337U CN214707337U CN202023240307.9U CN202023240307U CN214707337U CN 214707337 U CN214707337 U CN 214707337U CN 202023240307 U CN202023240307 U CN 202023240307U CN 214707337 U CN214707337 U CN 214707337U
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Abstract
The utility model provides a sectional dislocation type permanent magnet motor rotor, which comprises a rotor core, wherein the rotor core comprises a plurality of sections of core sections which are formed by dislocation and lamination, and the core sections comprise a plurality of rotor punching sheets which are punched by superposition; the rotor punching sheet is provided with magnetic steel grooves which are uniformly distributed at intervals; the magnetic steel grooves in the plurality of sections of iron core sections which are staggered and laminated in the rotor iron core are of a V-shaped segmented staggered structure. The utility model discloses a segmentation dislocation formula permanent-magnet machine rotor with economical and practical, production equipment are convenient, reduce torque pulsation function.
Description
Technical Field
The utility model relates to a production and processing field, concretely relates to segmentation dislocation formula permanent-magnet machine rotor.
Background
With the rapid development of the new energy automobile industry, the driving motor for the new energy automobile draws more and more attention, and the permanent magnet motor is widely applied to the new energy automobile due to the advantages of high power density, high torque density, high efficiency and the like. However, the permanent magnet steel of the permanent magnet motor has different attractive forces on the stator teeth and the stator slots, and the torque of the rotor fluctuates during rotation due to the attractive forces with different sizes, namely the cogging torque and the torque ripple, so that on one hand, when the cogging torque and the torque ripple are large, the loss of the motor is increased to some extent, and the efficiency is reduced; on the other hand, the large cogging torque and the large torque ripple also affect vibration and noise during operation of the motor.
In the prior art, in order to reduce the vibration noise of the motor, the cogging torque and the torque ripple of the motor during operation need to be reduced, and a common measure is to stagger the stator oblique poles or the rotor sections to eliminate the harmonic content and the cogging torque and reduce the torque ripple. The working principle of the motor is equivalent to that a plurality of motors are staggered and superposed along the axial direction, the sum of the cogging torques of all the sections of the motors approaches to zero, and the torque pulsation is reduced.
But has the following disadvantages:
first, behind the stator chute, the rule degree of difficulty improves, and the length of winding also can correspondingly increase, increases the copper line quantity.
And secondly, the rotor is realized by dislocation of the rotor sections or by a positioning tool or by different rotor core punching sheets, the equipment investment is high in the former, and the cost is higher because the latter needs to be provided with two or more rotor punching sheet dies.
Thirdly, if the rotor is always inclined in a single side due to the sectional dislocation of the rotor, an axial electromagnetic component force is generated, axial movement is easy to generate, the failure probability of the bearing is increased, the service life is shortened, and the axial vibration noise is increased.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a segmentation dislocation formula permanent-magnet machine rotor that has economical and practical, production equipment is convenient, reduce torque pulsation function.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a segmented dislocation type permanent magnet motor rotor comprises a rotor core, wherein the rotor core comprises a plurality of segments of core segments which are formed by dislocation and lamination, and the core segments comprise a plurality of rotor punching sheets which are laminated and stamped; the rotor punching sheet is provided with magnetic steel grooves which are uniformly distributed at intervals; the magnetic steel grooves in the plurality of sections of iron core sections which are staggered and laminated in the rotor iron core are of a V-shaped segmented staggered structure.
In a preferred embodiment of the present invention, the rotor punching sheet has a plurality of magnetic steel grooves circumferentially spaced apart from each other; permanent magnet steel is arranged in the plurality of steel magnet grooves, and the plurality of permanent magnet steel is distributed in the steel magnet grooves in an N pole and an S pole adjacent mode.
In a preferred embodiment of the utility model, a plurality of component section dislocation structures are arranged on the rotor punching sheet; at least one magnetic steel groove is correspondingly provided with at least one group of segmented dislocation structures.
The utility model discloses an in the preferred embodiment, every group segmentation dislocation structure is including setting up a plurality of segmentation dislocation hole or/and segmentation dislocation groove on the rotor punching.
In a preferred embodiment of the present invention, each set of segment dislocation structure includes a segment slot dislocation slot i disposed at an inner side of the rotor sheet; and a first subsection dislocation hole and a second subsection dislocation hole which are arranged on the rotor punching sheet.
In a preferred embodiment of the present invention, the segmented dislocation hole one is staggered from the central line of the permanent magnet steel in the corresponding magnet steel slot by an angle α; the second segmental dislocation hole is staggered from the central line of the permanent magnet steel in the corresponding magnet steel groove by an angle beta; and the directions of the staggered alpha angle and beta angle are the center lines which are ahead of the permanent magnetic steel along the clockwise direction.
The utility model discloses an in the preferred embodiment, the lambda angle that staggers along the central line of the permanent magnetism magnet steel in the clockwise lag and the magnet steel groove that corresponds of segmentation groove dislocation groove one.
In a preferred embodiment of the present invention, the adjacent magnetic steel slots between the core segments are overlapped and staggered at intervals of a fixed angle 2 α.
In a preferred embodiment of the present invention, the plurality of sections of the core segments stacked in the rotor core in a staggered manner include a plurality of sections of the core segments stacked in a forward staggered manner or/and sections stacked in a reverse staggered manner.
In a preferred embodiment of the present invention, the plurality of core segments stacked in a staggered manner include a front core segment and a back core segment at two ends thereof, the first core segment and the second core segment are stacked in a reverse direction, the first core segment and the second core segment are positioned by a first segmented staggered hole, and the central lines of the first core segment and the second core segment are staggered by an angle of 2 α;
the front and back faces of the third section of the iron core section and the second section of the iron core section are in the same direction and are laminated in the same direction, a first section of the section dislocation hole of the second section of the iron core section is aligned with a second section of the section dislocation hole of the third section of the iron core section, beta is 3 alpha, and the third section of the iron core section is dislocated by an angle of 2 alpha relative to the central line of the second section of the iron core section;
the directions of the front and the back of the fourth section of iron core section and the third section of iron core section are opposite, and the fourth section of iron core section and the third section of iron core section are laminated in opposite directions; the sectional dislocation groove of the fourth section of iron core section is aligned with the sectional dislocation groove of the third section of iron core section, the central lines of the fourth section of iron core section and the third section of iron core section are dislocated by an angle of 2 lambda, and lambda is alpha;
the front and back faces of the fifth section of iron core section relative to the fourth section of iron core section are opposite in orientation and are oppositely laminated, the fifth section of iron core section is staggered relative to the segmentation staggered groove of the fourth section of iron core section to realize positive and negative overlapping buckling, the fifth section of iron core section is staggered relative to the central line of the fourth section of iron core section by an angle of-2 lambda, and lambda is alpha;
the front and back faces of the sixth section of iron core section and the fifth section of iron core section are in the same direction and are laminated in the same direction, a first section of segmental dislocation hole of the fifth section of iron core section is aligned with a second section of segmental dislocation hole of the sixth section of iron core section, the third section of iron core section is dislocated relative to the central line of the second section of iron core section by an angle of- (beta-alpha), and beta is 3 alpha;
the front and back faces of the seventh section of iron core section and the sixth section of iron core section are opposite in direction and are oppositely laminated, the seventh section of iron core section is laminated on the sixth section of iron core section, the first section of staggered holes are aligned and superposed, and the center lines of the seventh section of iron core section and the sixth section of iron core section are staggered in a-2 alpha angle in a segmented mode;
the orientations of the front and the back of the eighth section of iron core section and the front and the back of the seventh section of iron core section are consistent, the eighth section of iron core section and the seventh section of iron core section are laminated in the same direction, the second sectional dislocation hole of the eighth section of iron core section is aligned with the first sectional dislocation hole of the seventh section of iron core section, the second sectional dislocation hole of the eighth section of iron core section is dislocated with the central line of the seventh section of iron core section by an angle of- (beta-alpha), and beta is 3 alpha.
The orientation of the positive and negative surfaces of the ninth section of iron core section is opposite to that of the eighth section of iron core section, the ninth section of iron core section and the eighth section of iron core section are oppositely laminated, the sectional dislocation groove of the ninth section of iron core section is aligned with the sectional dislocation groove of the 8 th section of iron core section, the central line of the ninth section of iron core section and the central line of the 8 th section of iron core section are dislocated by an angle of-2 lambda, and lambda is alpha.
The utility model provides a defect that exists in the technical background, the utility model discloses profitable technological effect is:
a segmented dislocation type permanent magnet motor rotor has the advantages of economy, practicality, convenience in production and assembly and torque pulsation reducing function. The development cost of the rotor core die is reduced, the rotor core is provided with the segmented dislocation structure, and the angle adjustment of rotor dislocation is realized through the combined butt joint of the segmented dislocation hole and the segmented dislocation groove of the segmented dislocation structure. Meanwhile, the axial force of the rotor generated by the traditional subsection dislocation is eliminated, and a plurality of axial subsections of the magnetic steel groove are arranged into a V shape.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a prior art configuration;
fig. 2 is a schematic structural diagram of a rotor sheet in a preferred embodiment of the present invention;
fig. 3 is a schematic axial view of the rotor core laminated on the front surface in the preferred embodiment of the present invention;
fig. 4 is a schematic top view of the laminated rotor core in accordance with the preferred embodiment of the present invention;
fig. 5 is a schematic top view of the rotor core laminated on the opposite side in the preferred embodiment of the present invention;
the meaning of the reference numerals in the figures; 1-rotor core, 10-core section, 2-magnetic steel groove, X-X' -center line, 101-rotor punching sheet, 40-segmented dislocation groove, 301-segmented dislocation hole I, 302-segmented dislocation hole II, 3-weight removing hole, 4-rivet hole and 5-positioning key groove.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and which therefore show only the constituents relevant to the invention.
It should be noted that, if directional indications (such as up, down, bottom, top, etc.) are involved in the embodiments of the present invention, the directional indications are only used for explaining the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are intended to be inclusive and mean, for example, that there may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 2 to 5, a segmented and staggered permanent magnet motor rotor includes a rotor core 1, the rotor core 1 includes a plurality of segments 10, which are stacked in a staggered manner, and the segments 10 include a plurality of stacked and stamped rotor sheets 101; the rotor punching sheet 101 is provided with magnetic steel grooves 2 which are uniformly distributed at intervals; the magnetic steel grooves 2 in the plurality of sections of iron core sections 10 which are staggered and laminated in the rotor iron core 1 are in a V-shaped segmented staggered structure.
The rotor punching sheet 101 is provided with a plurality of magnetic steel grooves 2 which are distributed at intervals along the circumferential direction; permanent magnet steel is arranged in the plurality of magnet steel grooves 2, and the plurality of permanent magnet steel are distributed in the magnet steel grooves 2 in an N pole and S pole adjacent mode.
As shown in fig. 2, a plurality of sets of segmented dislocation structures are arranged on the rotor sheet 101; at least one magnetic steel groove 2 is correspondingly provided with a group of segmented dislocation structures. Each group of segmented staggered structures comprises a first segmented groove staggered groove arranged on the inner side of the rotor punching sheet 101; and a first segmental dislocation hole 301 and a second segmental dislocation hole 302 which are arranged between the magnetic steel groove 2 on the rotor sheet 101 and the inner edge of the rotor sheet 101. The first segmental dislocation hole 301 and the central line X-X' of the permanent magnet steel in the corresponding magnet steel groove 2 are staggered by an angle alpha; the second segmental dislocation hole 302 and the central line X-X' of the permanent magnetic steel in the corresponding magnetic steel groove 2 are staggered by an angle beta; and the directions of the staggered alpha angle and beta angle are the central line X-X' which leads the permanent magnet steel along the clockwise direction. The first segmented groove staggered groove lags behind the central line X-X 'of the permanent magnet steel in the corresponding magnetic steel groove 2 along the clockwise direction and staggers from the central line X-X' by an angle of beta. The magnetic steel slots 2 between the adjacent laminated iron core sections 10 are staggered at intervals of a fixed angle 2 alpha.
Specifically, as shown in fig. 2 to 5, the plurality of staggered and laminated core segments 10 include core segments 10 with front and back ends respectively.
The front surface of the first section of iron core section faces upwards, the back surface of the second section of iron core section faces upwards, the first section of iron core section and the second section of iron core section are oppositely laminated, the first section of iron core section and the second section of iron core section are positioned through a first subsection dislocation hole 301, and the central lines X-X' of the first section of iron core section and the second section of iron core section are staggered by an angle of 2 alpha;
the reverse side of the third section of iron core section faces upwards, the orientations of the front side and the reverse side of the third section of iron core section are consistent with those of the second section of iron core section, the third section of iron core section and the second section of iron core section are laminated in the same direction, a first section of dislocation hole 301 of the second section of iron core section is aligned with a second section of dislocation hole 302 of the third section of iron core section, beta is 3 alpha, and the third section of iron core section is dislocated by an angle of 2 alpha relative to the central line X-X' of the second section of iron core section;
the fourth section of iron core section is right-side up, the fourth section of iron core section and the third section of iron core section are opposite in right-side and right-side directions, and the fourth section of iron core section and the third section of iron core section are oppositely laminated; the segmental dislocation groove 40 of the fourth iron core segment is aligned with the segmental dislocation groove 40 of the third iron core segment, the central line X-X 'of the fourth iron core segment and the central line X-X' of the third iron core segment 0 are dislocated by an angle of 2 lambda, and lambda is alpha;
the reverse side of the fifth section of iron core section faces upwards, the direction of the fifth section of iron core section is opposite to that of the fourth section of iron core section, the fifth section of iron core section is laminated reversely, the fifth section of iron core section realizes positive and negative lamination relative to the segmentation dislocation slot 40 of the fourth section of iron core section, the fifth section of iron core section is dislocated by an angle of-2 lambda relative to the central line X-X' of the fourth section of iron core section, and lambda is alpha;
the reverse side of the sixth section of iron core section faces upwards, the directions of the front side and the reverse side of the sixth section of iron core section are consistent with those of the front side and the reverse side of the fifth section of iron core section, the sixth section of iron core section and the fifth section of iron core section are laminated in the same direction, a first section of segmental dislocation hole 301 of the fifth section of iron core section is aligned with a second section of segmental dislocation hole 302 of the sixth section of iron core section, the third section of iron core section is dislocated by a- (beta-alpha) angle relative to the central line X-X' of the second section of iron core section, and beta is 3 alpha;
the front surface of the seventh section of iron core section faces upwards, the front surfaces of the seventh section of iron core section and the sixth section of iron core section face oppositely, the seventh section of iron core section is laminated in reverse, the seventh section of iron core section is laminated on the sixth section of iron core section, the first section of dislocation hole 301 is aligned and superposed, and the center line X-X' of the seventh section of iron core section and the sixth section of iron core section is dislocated by an angle of-2 alpha in a subsection mode;
the reverse side of the eighth section of iron core section faces upwards, the orientations of the eighth section of iron core section and the seventh section of iron core section are consistent, the eighth section of iron core section and the seventh section of iron core section are overlapped in the same direction, the second section of segmental dislocation hole 302 of the eighth section of iron core section is aligned with the first section of segmental dislocation hole 301 of the seventh section of iron core section, the center line X-X' of the eighth section of iron core section and the seventh section of iron core section is dislocated by a- (beta-alpha) angle, and beta is 3 alpha.
The orientation of the positive and negative surfaces of the ninth section of iron core section is opposite to that of the eighth section of iron core section, the ninth section of iron core section and the eighth section of iron core section are oppositely laminated, the sectional dislocation groove of the ninth section of iron core section is aligned with the sectional dislocation groove of the 8 th section of iron core section, the central line of the ninth section of iron core section and the central line of the 8 th section of iron core section are dislocated by an angle of-2 lambda, and lambda is alpha.
The utility model discloses the theory of operation:
specifically, as shown in fig. 2 to 5, the rotor of the segmented offset permanent magnet motor is provided. The development cost of the rotor core 1 mould is reduced, the rotor core 1 is provided with the segmented dislocation structure, and the angle adjustment of rotor dislocation is realized through the combined butt joint of the segmented dislocation holes of the segmented dislocation structure and the segmented dislocation grooves 40. Meanwhile, the axial force of the rotor generated by the traditional subsection dislocation is eliminated, and a plurality of axial subsections of the magnetic steel groove 2 are arranged into a V shape.
Above concrete implementation is right the utility model provides a scheme thought concrete support, can not injecing with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change or equivalent change of equivalence that do on this technical scheme basis all still belong to the utility model discloses technical scheme's scope of protection.
Claims (10)
1. The utility model provides a segmentation dislocation formula permanent-magnet machine rotor, includes rotor core, its characterized in that: the rotor core comprises a plurality of sections of core sections which are formed by staggered lamination, and the core sections comprise a plurality of laminated and stamped rotor punching sheets; the rotor punching sheet is provided with magnetic steel grooves which are uniformly distributed at intervals; the magnetic steel grooves in the plurality of sections of iron core sections which are staggered and laminated in the rotor iron core are of a V-shaped segmented staggered structure.
2. The segmented dislocation type permanent magnet motor rotor according to claim 1, wherein: the rotor punching sheet is provided with a plurality of magnetic steel grooves which are distributed at intervals along the circumferential direction; permanent magnet steel is arranged in the plurality of steel magnet grooves, and the plurality of permanent magnet steel is distributed in the steel magnet grooves in an N pole and an S pole adjacent mode.
3. The segmented dislocation type permanent magnet motor rotor according to claim 2, wherein: the rotor punching sheet is provided with a plurality of groups of segment dislocation structures; at least one magnetic steel groove is correspondingly provided with at least one group of segmented dislocation structures.
4. The segmented dislocation type permanent magnet motor rotor according to claim 3, wherein: each group of segmented dislocation structures comprise a plurality of segmented dislocation holes or/and segmented dislocation grooves which are arranged on the rotor punching sheet.
5. The segmented dislocation type permanent magnet motor rotor according to claim 4, wherein: each group of segmented staggered structures comprises a first segmented groove staggered groove arranged on the inner side of the rotor punching sheet; and a first subsection dislocation hole and a second subsection dislocation hole which are arranged on the rotor punching sheet.
6. The segmented dislocation type permanent magnet motor rotor according to claim 5, wherein: the first segmental dislocation hole is staggered from the central line of the permanent magnet steel in the corresponding magnet steel groove by an angle alpha; the second segmental dislocation hole is staggered from the central line of the permanent magnet steel in the corresponding magnet steel groove by an angle beta; and the directions of the staggered alpha angle and beta angle are the center lines which are ahead of the permanent magnetic steel along the clockwise direction.
7. The segmented dislocation type permanent magnet motor rotor according to claim 6, wherein: and the first segmented groove staggered groove lags behind the central line of the permanent magnet steel in the corresponding magnetic steel groove along the clockwise direction and is staggered with the lambda angle.
8. The segmented dislocation type permanent magnet motor rotor according to claim 7, wherein: and the magnetic steel grooves between the adjacent laminated iron core sections are staggered at intervals of a fixed angle 2 alpha.
9. The segmented dislocation type permanent magnet motor rotor according to claim 8, wherein: the plurality of sections of the iron core sections which are staggered and laminated in the rotor iron core comprise a plurality of iron core sections which are staggered and laminated in the positive direction or/and staggered and laminated in the negative direction.
10. The segmented dislocation type permanent magnet motor rotor according to claim 9, wherein: the staggered and laminated iron core sections comprise a plurality of sections of iron core sections, wherein the two ends of each iron core section are respectively a front side and a back side, the first section of iron core section and the second section of iron core section are reversely laminated, the first section of iron core section and the second section of iron core section are positioned through the segmented staggered hole I, and the central lines of the first section of iron core section and the second section of iron core section are staggered by an angle of 2 alpha;
the front and back faces of the third section of the iron core section and the second section of the iron core section are in the same direction and are laminated in the same direction, a first section of the section dislocation hole of the second section of the iron core section is aligned with a second section of the section dislocation hole of the third section of the iron core section, beta is 3 alpha, and the third section of the iron core section is dislocated by an angle of 2 alpha relative to the central line of the second section of the iron core section;
the directions of the front and the back of the fourth section of iron core section and the third section of iron core section are opposite, and the fourth section of iron core section and the third section of iron core section are laminated in opposite directions; the sectional dislocation groove of the fourth section of iron core section is aligned with the sectional dislocation groove of the third section of iron core section, the central lines of the fourth section of iron core section and the third section of iron core section are dislocated by an angle of 2 lambda, and lambda is alpha;
the front and back faces of the fifth section of iron core section relative to the fourth section of iron core section are opposite in orientation and are oppositely laminated, the fifth section of iron core section is staggered relative to the segmentation staggered groove of the fourth section of iron core section to realize positive and negative overlapping buckling, the fifth section of iron core section is staggered relative to the central line of the fourth section of iron core section by an angle of-2 lambda, and lambda is alpha;
the front and back faces of the sixth section of iron core section and the fifth section of iron core section are in the same direction and are laminated in the same direction, a first section of segmental dislocation hole of the fifth section of iron core section is aligned with a second section of segmental dislocation hole of the sixth section of iron core section, the third section of iron core section is dislocated relative to the central line of the second section of iron core section by an angle of- (beta-alpha), and beta is 3 alpha;
the front and back faces of the seventh section of iron core section and the sixth section of iron core section are opposite in direction and are oppositely laminated, the seventh section of iron core section is laminated on the sixth section of iron core section, the first section of staggered holes are aligned and superposed, and the center lines of the seventh section of iron core section and the sixth section of iron core section are staggered in a-2 alpha angle in a segmented mode;
the orientations of the front and the back of the eighth section of iron core section and the seventh section of iron core section are consistent, the eighth section of iron core section and the seventh section of iron core section are laminated in the same direction, the second section of iron core section and the first section of iron core section are aligned, the center lines of the eighth section of iron core section and the seventh section of iron core section are staggered by an angle of- (beta-alpha), and beta is 3 alpha;
the orientation of the positive and negative surfaces of the ninth section of iron core section is opposite to that of the eighth section of iron core section, the ninth section of iron core section and the eighth section of iron core section are oppositely laminated, the sectional dislocation groove of the ninth section of iron core section is aligned with the sectional dislocation groove of the 8 th section of iron core section, the central line of the ninth section of iron core section and the central line of the 8 th section of iron core section are dislocated by an angle of-2 lambda, and lambda is alpha.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023240307.9U CN214707337U (en) | 2020-12-29 | 2020-12-29 | Sectional dislocation type permanent magnet motor rotor |
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| CN202023240307.9U CN214707337U (en) | 2020-12-29 | 2020-12-29 | Sectional dislocation type permanent magnet motor rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114499073A (en) * | 2022-02-17 | 2022-05-13 | 天津市百成油田采油设备制造有限公司 | Rotor butt joint process of submersible motor |
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2020
- 2020-12-29 CN CN202023240307.9U patent/CN214707337U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114499073A (en) * | 2022-02-17 | 2022-05-13 | 天津市百成油田采油设备制造有限公司 | Rotor butt joint process of submersible motor |
| CN114499073B (en) * | 2022-02-17 | 2024-01-05 | 中海石油(中国)有限公司深圳分公司 | Rotor butt joint process of submersible motor |
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