CN107017750B - Motor with a motor housing - Google Patents
Motor with a motor housing Download PDFInfo
- Publication number
- CN107017750B CN107017750B CN201710320645.7A CN201710320645A CN107017750B CN 107017750 B CN107017750 B CN 107017750B CN 201710320645 A CN201710320645 A CN 201710320645A CN 107017750 B CN107017750 B CN 107017750B
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- China
- Prior art keywords
- magnetic steel
- magnetic
- stator
- rotor
- steel
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 175
- 239000010959 steel Substances 0.000 claims abstract description 175
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a motor, comprising: the stator structure comprises a stator core and a stator cavity, wherein a stator groove is formed in the stator core, the stator groove is obliquely arranged along the axis direction of the stator core, and a winding of the stator structure is arranged on the stator core by adopting a star connection method; a rotor structure arranged in the stator cavity, three magnetic steels are arranged on each magnetic pole of the rotor structure. By applying the technical scheme of the invention, the motor solves the problem that the production and assembly of the motor in the prior art are complex.
Description
Technical Field
The invention relates to the technical field of motors, and more particularly to an electric machine.
Background
In the built-in permanent magnet motor, the motor air gap magnetic density waveform is close to sinusoidal distribution, so that the eddy current loss and torque pulsation of the magnetic steel can be reduced while harmonic components are reduced. In the prior art, in order to enable the magnetic density waveform of the motor air gap to be close to sinusoidal distribution, the whole section of magnetic steel of each pole of a rotor can be divided into a plurality of homopolar magnetic steels with different widths as much as possible, magnetic isolation reinforcing ribs are arranged between the sections of magnetic steel, the magnetic density of the motor air gap is close to sinusoidal waveform by using odd-number section step waves for electromagnetic performance analysis, and the widths of the sections of magnetic steel are modulated by adopting a method that the areas of the sections of step waves are equal to achieve the purpose that the magnetic density waveform of the motor air gap is close to sinusoidal distribution. In this way, when the number of segments of the magnetic steel is too large, the rotor structure is easy to be complicated, and great difficulty is brought to the production and assembly of the motor.
Disclosure of Invention
The invention provides a motor, which solves the problem of complex production and assembly of the motor in the prior art.
The invention provides a motor, comprising: the stator structure comprises a stator core and a stator cavity, wherein a stator groove is formed in the stator core, the stator groove is obliquely arranged along the axis direction of the stator core, and a winding of the stator structure is arranged on the stator core by adopting a star connection method; and the rotor structure is arranged in the stator cavity, and three magnetic steels are arranged on each magnetic pole of the rotor structure.
Further, the rotor structure comprises a rotor core, three magnetic steels are distributed in an arc shape on the rotor core, and an arc opening faces the center of the rotor core.
Further, the rotor core is provided with a plurality of sector areas on the radial section, the sector areas are in one-to-one correspondence with the magnetic poles, and the three magnetic steels are respectively a first magnetic steel, a second magnetic steel and a third magnetic steel, wherein the first magnetic steel is positioned on the central line of the sector area corresponding to each pole at the center of the radial section of the rotor core, and the second magnetic steel and the third magnetic steel are symmetrically arranged along the central line.
Further, on the radial section of the rotor core, the center of the circle of the rotor core is not located on the center line of the second magnetic steel along the length direction and the center line of the third magnetic steel along the length direction.
Further, the lengths of the second magnetic steel and the third magnetic steel on the radial section are the same, and are smaller than the lengths of the first magnetic steel on the radial section.
Further, a plurality of magnetic steel mounting holes for mounting the magnetic steel are formed in the rotor core, and the magnetic steel mounting holes are arranged in one-to-one correspondence with the magnetic steel.
Further, the rotor core further comprises a slot wedge, and the slot wedge is arranged in the magnetic steel mounting hole to fix the magnetic steel.
Further, the side edge of the second magnetic steel and/or the side edge of the third magnetic steel, which is close to the first magnetic steel, and/or the side edge of the first magnetic steel is of an arc structure.
Further, the second magnetic steel and the third magnetic steel are arranged at an included angle with the first magnetic steel.
Further, the rotor core further includes: the magnetic isolation bridge is arranged at the periphery of the rotor core; and the reinforcing ribs are arranged between two adjacent magnetic steel mounting holes.
Further, the rotor structure comprises a plurality of rotor punching sheets, and positioning holes are formed in the plurality of rotor punching sheets.
By applying the technical scheme of the invention, when the air gap flux density waveform of the motor is a sawtooth-shaped flat top wave and the opposite potential waveform of the motor is a flat top wave, the stator slots are obliquely arranged along the axial direction of the stator core, the windings of the stator structure are arranged on the stator core by adopting a star connection method, and three magnetic steels are arranged on each magnetic pole of the rotor structure, so that the counter potential of the motor wire can be modulated into a sine wave. The mode of the invention can reduce the number of the magnetic steel on each magnetic pole of the rotor structure, thereby reducing magnetic leakage, being beneficial to the assembly and production of the motor and improving the production efficiency of the motor.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a schematic structural diagram of a rotor structure provided according to an embodiment of the present invention without mounting magnetic steel;
fig. 2 shows a schematic structural diagram of a rotor structure provided according to an embodiment of the present invention when magnetic steel is mounted;
FIG. 3 shows a schematic diagram of an air gap flux density waveform provided in accordance with an embodiment of the present invention;
FIG. 4 shows a schematic diagram of the structure of the opposite electric potential of the motor provided according to an embodiment of the invention;
fig. 5 shows a schematic diagram of the structure of the back electromotive force of the motor wire provided according to an embodiment of the present invention.
Wherein the above figures include the following reference numerals:
10. a rotor core; 11. magnetic steel; 111. a first magnetic steel; 112. a second magnetic steel; 113. a third magnetic steel; 12. a magnetic steel mounting hole; 121. a first magnetic steel mounting hole; 122. a second magnetic steel mounting hole; 123. a third magnetic steel mounting hole; 13. a slot wedge; 14. a magnetic isolation bridge; 15. reinforcing ribs; 16. and positioning holes.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
According to a specific embodiment of the present invention there is provided an electric machine comprising a stator structure and a rotor structure, the stator structure comprising a stator core and a stator cavity, the stator core being provided with stator slots, the stator slot is obliquely arranged along the axial direction of the stator core, the winding of the stator structure is arranged on the stator core by adopting a star connection method, the rotor structure is arranged in the stator cavity, and three magnetic steels are arranged on each magnetic pole of the rotor structure.
With the adoption of the configuration mode, when the air gap flux density waveform of the motor is the sawtooth-shaped flat top wave A shown in fig. 3 and the opposite potential waveform of the motor is the flat top wave B shown in fig. 4, the stator slots are obliquely arranged along the axial direction of the stator core, the windings of the stator structure are arranged on the stator core by adopting a star connection method, and three magnetic steels are arranged on each magnetic pole of the rotor structure, so that the counter potential of the motor wire can be modulated into a sine wave shown in fig. 5. The mode of the invention can reduce the number of the magnetic steel on each magnetic pole of the rotor structure, thereby reducing magnetic leakage, being beneficial to the assembly and production of the motor and improving the production efficiency of the motor.
Further, in the present invention, the rotor structure includes the rotor core 10, and the three magnetic steels 11 are arranged in an arc shape on the rotor core 10 with the arc-shaped opening facing the center of the rotor core 10. Specifically, as a specific embodiment of the present invention, the structure of the magnetic steel 11 is a rectangular parallelepiped structure, and the magnetizing direction of the magnetic steel 11 is perpendicular to the surface of the magnetic steel 11. Fig. 1 and 2 show a four-pole structure of a rotor structure, and as other embodiments of the present invention, the rotor structure of the present invention is also applicable to a six-stage or eight-stage motor.
In the present invention, in order to make the distribution of the magnetic field in the rotor structure more uniform, the rotor core 10 may be configured to have a plurality of sector areas on the radial section, where the plurality of sector areas are disposed in one-to-one correspondence with the plurality of magnetic poles, and the three magnetic steels are respectively a first magnetic steel 111, a second magnetic steel 112, and a third magnetic steel 113, where the first magnetic steel 111 is located on the center line of the sector area corresponding to each pole at the center of the radial section of the rotor core 10, and the second magnetic steel 112 and the third magnetic steel 113 are symmetrically disposed along the center line.
By adopting the configuration mode, the second magnetic steel 112 and the third magnetic steel 113 are symmetrically arranged along the central line, and the structure is beneficial to the correspondence of the magnets of each pair of poles of the rotor structure, so that the magnetic field distribution in the whole rotor structure is more uniform.
Further, in the present invention, in order to improve the mechanical strength of the rotor structure, in the radial cross section of the rotor core 10, the center of the rotor core 10 is not located on the center line of the second magnetic steel 112 in the longitudinal direction and on the center line of the third magnetic steel 113 in the longitudinal direction.
In the present invention, in order to further secure the structural strength of the rotor structure, the lengths of the second magnetic steel 112 and the third magnetic steel 113 in the radial cross section may be set to be the same, and both may be smaller than the length of the first magnetic steel 111 in the radial cross section. In the present invention, when the ratio of the lengths of the second magnetic steel 112 or the third magnetic steel 113 to the first magnetic steel 111 is 2:3, the structural strength of the rotor in this arrangement mode is maximized. Further, in the present invention, the thicknesses of the first magnetic steel 111, the second magnetic steel 112, and the third magnetic steel 113 along the axial direction of the rotor core 10 are all equal.
Further, in the present invention, in order to achieve the installation of the plurality of magnetic steels 11 on the rotor structure, the rotor core 10 may be provided with a plurality of magnetic steel installation holes 12 for installing the magnetic steels 11, and the magnetic steel installation holes 12 are provided in one-to-one correspondence with the magnetic steels 11. Specifically, as shown in fig. 1 and 2, the plurality of magnetic steel mounting holes 12 are a first magnetic steel mounting hole 121, a second magnetic steel mounting hole 122, and a third magnetic steel mounting hole 123, respectively, and when the mounting operation of the plurality of magnetic steels 11 is performed, the first magnetic steel 111 is set and mounted in the first magnetic steel mounting hole 121, the second magnetic steel 112 is set and mounted in the second magnetic steel mounting hole 122, and the third magnetic steel 113 is set and mounted in the third magnetic steel mounting hole 123.
In the present invention, in order to facilitate the fixation of the magnetic steel 11, the rotor core 10 may be configured to further include a slot wedge 13, the slot wedge 13 being disposed in the magnetic steel mounting hole 12 to fix the magnetic steel 11. Specifically, as one embodiment of the present invention, the number of the slot wedges 13 is two for each pole of the rotor structure, and after the second magnetic steel 112 is installed in the second magnetic steel installation hole 122, one of the slot wedges 13 is driven into the remaining space of the second magnetic steel installation hole 122 to fix the second magnetic steel 112. After the third magnetic steel 113 is mounted in the third magnetic steel mounting hole 123, another slot wedge 13 is driven into the remaining space of the third magnetic steel mounting hole 123 to fix the third magnetic steel 113. Further, in the present invention, after the assembly of the magnetic steel 11 with the magnetic steel mounting hole 12 is completed, the gap of the magnetic steel mounting groove may be filled with the magnetic steel glue to firmly fix the magnetic steel 11 in the magnetic steel mounting hole 12.
Specifically, as a specific embodiment of the present invention, when the magnetic steel 11 is mounted to the magnetic steel mounting hole 12 due to the relatively small size of each magnetic steel 11, the magnetic steel 11 may be pushed into the magnetic steel mounting hole 12 by using a guide tool made of a non-magnetically conductive material according to a prescribed direction of the magnetic steel 11 under each N, S pole of the motor. The mounting process of the magnetic steel 11 by adopting the mode has good manufacturability and high production efficiency.
Further, in order to improve the structural strength of the rotor structure, as shown in fig. 2, the side edge of the second magnetic steel 112 and/or the side edge of the third magnetic steel 113, which is close to the first magnetic steel 111, and/or the side edge of the first magnetic steel 111 may be provided as an arc structure.
In the present invention, as shown in fig. 1 and 2, the second magnetic steel 112 and the third magnetic steel 113 are disposed at an included angle with the first magnetic steel 111. In the invention, the included angle between the second magnetic steel 112 or the third magnetic steel 113 and the first magnetic steel 111 can be set to 150-165 degrees, wherein the size of the included angle can be determined through the combination of the back electromotive force of a motor line and the structural strength of a rotor structure. Specifically, when the angle of the second magnetic steel 112 or the third magnetic steel 113 with the first magnetic steel 111 increases, the peak value of the back electromotive force of the motor line increases, and the structural strength of the rotor structure decreases. Conversely, when the angle between the second magnetic steel 112 or the third magnetic steel 113 and the first magnetic steel 111 is reduced, the peak value of the back electromotive force of the motor line is reduced, and the structural strength of the rotor structure is increased.
Further, in the present invention, in order to further improve the structural strength of the rotor structure and to improve the magnetic shielding effect of the rotor structure, the rotor core 10 may be configured to further include a magnetic shielding bridge 14 and reinforcing ribs 15, wherein the magnetic shielding bridge 14 is disposed at the periphery of the rotor core 10, and the reinforcing ribs 15 are disposed between the adjacent two magnetic steel mounting holes 12. Through the action of the magnetism isolating bridge 14 and the reinforcing ribs 15, the centrifugal force of the rotor core 10 and the magnetic steel 11 during high-speed movement can be borne, and the magnetism isolating effect can be achieved.
In the present invention, in order to ensure the accuracy of the position of the rotor structure during lamination, the rotor structure may be configured to include a plurality of rotor sheets on which the positioning holes 16 are provided. Through the effect of locating hole 16, can guarantee that a plurality of rotor punching stack pressure position is unified to improve rotor structure's precision and make things convenient for the assembly between follow-up magnet steel 11 and the magnet steel mounting hole 12.
In summary, the motor of the present invention has the following advantages over the prior art.
Firstly, when the air gap flux density waveform of the motor is a sawtooth-shaped flat top wave A and the opposite potential waveform of the motor is a flat top wave B, the stator grooves are obliquely arranged along the axial direction of the stator core, the windings of the stator structure are arranged on the stator core by adopting a star connection method, and three magnetic steels are arranged on each magnetic pole of the rotor structure, so that the counter potential of the motor wire can be modulated into a sine wave. The mode of the invention can reduce the number of the magnetic steel on each magnetic pole of the rotor structure, thereby reducing magnetic leakage, being beneficial to the assembly and production of the motor and improving the production efficiency of the motor.
And secondly, the side edge, close to the first magnetic steel, of the second magnetic steel and/or the third magnetic steel and/or the side edge of the first magnetic steel are/is arranged to be of an arc structure, so that the structural strength of the rotor structure can be improved.
Third, in the radial section of the rotor core, the first magnetic steel is located on the center line of the sector area corresponding to each pole at the center of the radial section of the rotor core, and in the radial section of the rotor core 10, the center of the circle of the rotor core 10 is not located on the center line of the second magnetic steel 112 along the length direction and the center line of the third magnetic steel 113 along the length direction, so that the structural strength of the rotor structure can be improved.
Fourth, through setting up the magnet steel segmentation can reduce the stress of rotor structure magnetism isolating bridge department and the deformation of adjacent magnetism isolating bridge's intermediate position department, the maximum stress point is dispersed by magnetism isolating bridge to a plurality of strong strengthening ribs of bearing capacity on to can improve rotor structure's mechanical strength. Further, the width of each reinforcing rib is determined by the maximum rotational speed of the motor, so that the maximum rotational speed of the rotor for safe operation can be greatly increased.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An electric machine, the electric machine comprising:
the stator structure comprises a stator core and a stator cavity, wherein a stator groove is formed in the stator core, the stator groove is obliquely arranged along the axis direction of the stator core, and a winding of the stator structure is arranged on the stator core by adopting a star connection method;
the rotor structure is arranged in the stator cavity, and three magnetic steels are arranged on each magnetic pole of the rotor structure;
the rotor structure comprises a rotor core (10), wherein three magnetic steels (11) are arranged on the rotor core (10) in an arc shape, and an arc opening faces the center of the rotor core (10);
the rotor core (10) is provided with a plurality of sector areas on a radial section, the sector areas are in one-to-one correspondence with the magnetic poles, the three magnetic steels are respectively a first magnetic steel (111), a second magnetic steel (112) and a third magnetic steel (113), wherein the first magnetic steel (111) is positioned on the central line of the sector area corresponding to each pole at the center of the radial section of the rotor core (10), and the second magnetic steel (112) and the third magnetic steel (113) are symmetrically arranged along the central line;
the second magnetic steel (112) and the third magnetic steel (113) are arranged at an included angle with the first magnetic steel (111), and the included angle is in the range of 150-165 degrees.
2. The electric machine according to claim 1, characterized in that, in a radial cross section of the rotor core (10), the center of the rotor core (10) is not located on the center line of the second magnetic steel (112) in the length direction and on the center line of the third magnetic steel (113) in the length direction.
3. The electric machine according to claim 1, characterized in that the second magnetic steel (112) and the third magnetic steel (113) have the same length in radial section and are each smaller than the length in radial section of the first magnetic steel (111).
4. The motor according to claim 2, wherein a plurality of magnet steel mounting holes (12) for mounting the magnet steel (11) are provided on the rotor core (10), and the magnet steel mounting holes (12) are provided in one-to-one correspondence with the magnet steel (11).
5. The electric machine according to claim 4, characterized in that the rotor core (10) further comprises a slot wedge (13), the slot wedge (13) being arranged in the magnet steel mounting hole (12) to fix the magnet steel (11).
6. The electric machine according to claim 1, characterized in that the side of the second magnetic steel (112) and/or the third magnetic steel (113) close to the first magnetic steel (111) and/or the side of the first magnetic steel (111) is of a circular arc structure.
7. The electric machine according to claim 1, characterized in that the second magnetic steel (112) and the third magnetic steel (113) are both arranged at an angle to the first magnetic steel (111).
8. The electric machine according to claim 4, characterized in that the rotor core (10) further comprises:
a magnetic shielding bridge (14) provided at the periphery of the rotor core (10);
and the reinforcing ribs (15) are arranged between two adjacent magnetic steel mounting holes (12).
9. The machine of claim 1, wherein the rotor structure comprises a plurality of rotor blades, a plurality of the rotor blades having locating holes (16) disposed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320645.7A CN107017750B (en) | 2017-05-08 | 2017-05-08 | Motor with a motor housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710320645.7A CN107017750B (en) | 2017-05-08 | 2017-05-08 | Motor with a motor housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107017750A CN107017750A (en) | 2017-08-04 |
| CN107017750B true CN107017750B (en) | 2024-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710320645.7A Active CN107017750B (en) | 2017-05-08 | 2017-05-08 | Motor with a motor housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107017750B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546892B (en) * | 2017-08-23 | 2021-05-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor core and motor with same |
| CN108880054A (en) * | 2018-07-16 | 2018-11-23 | 珠海格力电器股份有限公司 | Speed permanent magnet synchronous motor rotor and its assembly method, motor |
| CN109149820A (en) * | 2018-11-07 | 2019-01-04 | 珠海格力电器股份有限公司 | Magneto and rotor |
| CN110635641B (en) * | 2019-09-24 | 2020-10-27 | 哈尔滨工业大学 | Axial magnetic field reverse salient pole permanent magnet synchronous motor |
| CN112994393A (en) * | 2019-12-16 | 2021-06-18 | 大银微***股份有限公司 | Permanent-magnet spindle motor |
| DE102021207451A1 (en) * | 2021-07-14 | 2023-01-19 | Zf Friedrichshafen Ag | Rotor lamination, rotor with a plurality of rotor laminations and method for manufacturing a rotor |
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| WO2016104418A1 (en) * | 2014-12-22 | 2016-06-30 | 三菱電機株式会社 | Rotor for rotary electrical machine |
| CN206908491U (en) * | 2017-05-08 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor |
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|---|---|---|---|---|
| CN101789663A (en) * | 2010-01-08 | 2010-07-28 | 李嘉琛 | Vehicle permanent magnetic synchronous motor and stator iron core capable of weakening magnetic resistance moment |
| CN102420481A (en) * | 2011-12-19 | 2012-04-18 | 南车株洲电机有限公司 | Permanent magnet synchronous motor and cambered rotor structure thereof |
| CN103904792A (en) * | 2014-03-26 | 2014-07-02 | 苏州永博电气有限公司 | Stator stamped steel of refrigerating motor |
| WO2016104418A1 (en) * | 2014-12-22 | 2016-06-30 | 三菱電機株式会社 | Rotor for rotary electrical machine |
| CN206908491U (en) * | 2017-05-08 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor |
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|---|---|
| CN107017750A (en) | 2017-08-04 |
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