CN215451074U - Composite permanent magnet for permanent magnet motor - Google Patents
Composite permanent magnet for permanent magnet motor Download PDFInfo
- Publication number
- CN215451074U CN215451074U CN202121479531.5U CN202121479531U CN215451074U CN 215451074 U CN215451074 U CN 215451074U CN 202121479531 U CN202121479531 U CN 202121479531U CN 215451074 U CN215451074 U CN 215451074U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- magnetic powder
- carbon fiber
- adhesive film
- film layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a composite permanent magnet for a permanent magnet motor, belongs to the technical field of manufacturing of permanent magnet motors, and is used for solving the problems of large eddy current loss and high local stress of the conventional permanent magnet. The magnetic powder composite component comprises an inner composite component and an outer composite component, wherein the inner composite component is coaxially sleeved on the outer side of the coated carbon fiber layer, and the outer component of the magnetic powder composite component is coaxially sleeved with a sheath; the permanent magnet assembly rotor excitation device is fast and stable in installation, can enhance the excitation magnetic field of the permanent magnet assembly rotor, and can absorb the deformation stress generated on the permanent magnet block when the rotor rotates at a high speed, so that the risk of overhigh local stress of the edge of the permanent magnet block due to high rotating speed is reduced; eddy current losses in the rotor of the electrical machine can be further reduced.
Description
Technical Field
The utility model belongs to the technical field of permanent magnet motor manufacturing, and relates to a composite permanent magnet for a permanent magnet motor.
Background
A magnet capable of maintaining its magnetism for a long period of time is called a permanent magnet. Such as natural magnetite (magnetite) and artificial magnetic steel (iron-nickel-cobalt-steel).
The magnet has various application ranges, including a television, a loudspeaker, a sound horn, a radio, a leather bag buckle, a data line magnetic ring, a computer hard disk, a mobile phone vibrator, a motor and the like. Permanent magnets such as loudspeakers use the principle of movement of an energized coil in a magnetic field to produce sound. When the current in the coil changes, the permanent magnet on the loudspeaker generates a magnetic field which acts with the current, so that the relative position of the coil and the magnet changes, the cone on the loudspeaker is driven to vibrate, air is pushed, the vibration is propagated, and the human ear can hear the sound. In a word, the permanent magnet is ubiquitous in life, and brings convenience to production and life of people.
The permanent magnet motor has the outstanding advantages of high efficiency and power factor, wide rotating speed operation range and the like, has the characteristics of small size, light weight, high power density and the like, becomes the core and key of the development of high-end equipment in China, is particularly suitable for being applied to high-speed and high-performance motor systems, and has wide application prospects in the fields of high-speed grinding machines, air circulation refrigeration systems, energy storage flywheels, natural gas conveying high-speed centrifugal compressors, distributed power generation systems serving as airplanes or ship-based power supply equipment and the like.
Compared with an outer rotor permanent magnet motor, the inner rotor permanent magnet motor has the advantages of small rotor radius and high reliability, and becomes the first choice of a high-speed permanent magnet motor.
However, the existing permanent magnet motor rotor has large eddy current loss and local stress, which becomes the bottleneck of the development of a high-speed permanent magnet motor to higher power and higher rotating speed.
Therefore, the composite permanent magnet for the permanent magnet motor is provided, which is fast and stable to install, and has strong excitation magnetic field and low eddy current loss of the rotor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a composite permanent magnet for a permanent magnet motor aiming at the problems in the prior art, and the technical problems to be solved by the utility model are as follows: how to enable the composite permanent magnet to have the functions of reducing eddy current loss and local stress in the motor rotor, and the strength of an excitation magnetic field.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides a compound permanent magnet for permanent magnet motor, includes cladding carbon fiber layer, two permanent magnet blocks and the magnetic composite assembly of relative placement, be equipped with mixed obturator between two permanent magnet blocks, cladding carbon fiber layer cladding is in the outside of two permanent magnet blocks, and the magnetic composite assembly comprises interior composite component and the outer composite component that sets up in the inner composite component outside, and the coaxial suit of inside component is in the cladding carbon fiber layer outside, and the coaxial cover of the outside component of magnetic composite assembly is equipped with the sheath.
The carbon fiber coating layer, the two oppositely-arranged permanent magnet blocks and the mixed filling body form a permanent magnet assembly, a plurality of insertion bulges are uniformly distributed on the end face of each permanent magnet block in the circumferential direction, insertion gaps are formed among the insertion bulges, a first placing hole is formed in each permanent magnet block, a resisting end shaft is arranged on the outer side of each permanent magnet block, each insertion bulge is inserted into the corresponding insertion gap of the other permanent magnet block, and a placing gap is formed between the insertion bulges of the two oppositely-arranged permanent magnet blocks.
By adopting the structure, the first placing hole is used for sticking the permanent magnet block to the outer surface of the rotating shaft so as to minimize the rotating radius of the permanent magnet block and realize the technical effect of minimizing the centrifugal force during high-speed rotation of the permanent magnet block, the resisting end shaft is used for installing the coating carbon fiber layer, and the placing gap is used for installing the mixed filling body.
The inner two ends of the coated carbon fiber layer are provided with matching protrusions which are clamped on the resisting end shafts of the corresponding permanent magnet blocks, the inner diameter of each matching protrusion is equal to the shaft diameter of each resisting end shaft, and the inner diameter of the coated carbon fiber layer is equal to the outer diameter of each permanent magnet block.
Structure more than adopting, cooperation protruding block is on the end axle that keeps out of corresponding permanent magnet block, and installation cladding carbon fiber layer wraps up permanent magnet block and mixed obturator inside, guarantees that the installation is stable.
The inboard of mixing the obturator is equipped with places hole two, places hole two and places the aperture of hole one and equals, and the outside of mixing the obturator is equipped with the block arch of a plurality of circumference equipartitions, forms the block clearance between the block arch, and inside the protruding block of block was placing the clearance, the protruding block of plug-in connection was inside the block clearance.
Structure more than adopting, place hole two and place hole one cooperation, install at the surface of pivot, the protruding block of block is inside placing the clearance, inserts and closes protruding block inside the block clearance, mixes the obturator and installs steadily between two permanent magnet blocks, and the excitation magnetic field of rotor can be strengthened to the mixed obturator, can absorb the high-speed rotation of rotor in addition, produced deformation stress on the permanent magnet block to reduce the permanent magnet block and lead to the too high risk of its border local stress because of high rotational speed.
The inner composite component comprises a first magnetic powder adhesive film layer, a second magnetic powder adhesive film layer and a third magnetic powder adhesive film layer which are wound in a tensile stress applying mode from inside to outside, the first magnetic powder adhesive film layer is coated on the outer side of the coated carbon fiber layer, and the outer side of the third magnetic powder adhesive film layer is provided with a first carbon fiber layer formed by double-layer carbon fibers wound in the tensile stress applying mode.
Structure more than adopting, from inside to outside in order to exert the first magnetic powder glued membrane layer, second magnetic powder glued membrane layer and the third magnetic powder glued membrane layer of tensile stress winding, effectively wrap up in the cladding carbon fiber layer outside, first carbon fiber layer stable wrapping in the outside of third magnetic powder glued membrane layer.
Outer composite member includes from inside to outside in order to exert tensile stress's mode winding fourth magnetic powder glued membrane layer, fifth magnetic powder glued membrane layer and sixth magnetic powder glued membrane layer, and fourth magnetic powder glued membrane layer cladding is in the first carbon fiber layer outside, and the outside of sixth magnetic powder glued membrane layer is equipped with the second carbon fiber layer that the double-deck carbon fiber that twines in order to exert tensile stress formed, and the sheath cladding is in the second carbon fiber layer outside.
Structure more than adopting, from inside to outside in order to exert tensile stress's the winding fourth magnetic powder glued membrane layer, fifth magnetic powder glued membrane layer and sixth magnetic powder glued membrane layer, effectively wrap up in the first carbon fiber layer outside, the cladding of second carbon fiber layer is in the outside of sixth magnetic powder glued membrane layer, and the sheath cladding is in the second carbon fiber layer outside, guarantees that outer composite component stable cladding is in the interior composite component outside, and the sheath cladding reaches the fastening protection effect in the second carbon fiber layer outside.
The permanent magnet block is made of a permanent magnet with higher remanence density, the first carbon fiber layer, the second carbon fiber layer and the coated carbon fiber layer are made of T700-grade carbon fibers, the mixed filler, the first magnetic powder adhesive film layer, the second magnetic powder adhesive film layer, the third magnetic powder adhesive film layer, the fourth magnetic powder adhesive film layer, the fifth magnetic powder adhesive film layer and the sixth magnetic powder adhesive film layer are made of magnetic powder adhesive films formed by uniformly mixing mixed magnetic powder and epoxy resin according to a proportion and then curing, and the sheath is made of a carbon fiber layer formed by winding a plurality of carbon fibers in a tensile stress applying mode.
By adopting the structure, the content of the magnetic powder adhesive film can be maximized, and the using amount of the permanent magnet blocks can be minimized, so that the eddy current loss in the motor rotor can be further reduced, and the critical rotating speed of the motor rotor can be indirectly improved.
Compared with the prior art, the composite permanent magnet for the permanent magnet motor has the advantages that:
the carbon fiber layer, the permanent magnet blocks and the mixed filler are matched to form the permanent magnet assembly, the mixed filler can enhance the excitation magnetic field of the rotor of the permanent magnet assembly and can absorb the deformation stress generated on the permanent magnet blocks when the rotor rotates at a high speed, so that the risk of overhigh local stress at the edges of the permanent magnet blocks due to high rotating speed is reduced; the permanent magnet component is quickly installed and fastened and locked by matching the coated carbon fiber layer with the resisting end shaft; through the cooperation of the magnetic powder composite component and the sheath, the content of the magnetic powder adhesive film can be maximized, and the using amount of the permanent magnet block can be minimized, so that the eddy current loss in the motor rotor can be further reduced, and the critical rotating speed of the motor rotor is indirectly improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of an exploded structure of the present invention;
in the figure: the magnetic powder composite material comprises 1-a permanent magnet block, 1 a-a resisting end shaft, 1 b-an inserting protrusion, 1 c-an inserting gap, 1 d-a placing hole I, 2-a coated carbon fiber layer, 2 a-a matching protrusion, 3-a magnetic powder composite component, 3 a-a first magnetic powder glue film layer, 3 b-a second magnetic powder glue film layer, 3 c-a third magnetic powder glue film layer, 3 d-a first carbon fiber layer, 3 e-a fourth magnetic powder glue film layer, 3 f-a fifth magnetic powder glue film layer, 3 g-a sixth magnetic powder glue film layer, 3 h-a second carbon fiber layer, 4-a sheath, 5-a mixed filling body, 5 a-a clamping protrusion, 5 b-a clamping gap and 5 c-a placing hole II.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1-3, the present embodiment provides a composite permanent magnet for a permanent magnet motor, including a carbon fiber-coated layer 2, two permanent magnet blocks 1 disposed opposite to each other, and a magnetic powder composite assembly 3, wherein a mixed filler 5 is disposed between the two permanent magnet blocks 1, the carbon fiber-coated layer 2 is coated on the outer sides of the two permanent magnet blocks 1, the magnetic powder composite assembly 3 is composed of an inner composite component and an outer composite component disposed on the outer side of the inner composite component, the inner component is coaxially sleeved on the outer side of the carbon fiber-coated layer 2, and the outer component of the magnetic powder composite assembly 3 is coaxially sleeved with a sheath 4.
The carbon fiber coating layer 2, two oppositely placed permanent magnet blocks 1 and a mixed filling body 5 form a permanent magnet assembly, a plurality of insertion protrusions 1b which are uniformly distributed on the circumference are arranged on the end face of each permanent magnet block 1, insertion gaps 1c are formed between the insertion protrusions 1b, a first placing hole 1d is formed in each permanent magnet block 1, a resisting end shaft 1a is arranged on the outer side of each permanent magnet block 1, the insertion protrusions 1b are inserted into the insertion gaps 1c of the other permanent magnet block 1, and a placing gap is formed between the insertion protrusions 1b of the two oppositely placed permanent magnet blocks 1; the insertion bulge 1b of the permanent magnet block 1 and the insertion gap 1c of the other permanent magnet block 1 are used for sticking the permanent magnet block 1 on the outer surface of the rotating shaft, so that the technical effects of minimizing the rotating radius of the permanent magnet block 1 and minimizing the centrifugal force during high-speed rotation of the permanent magnet block are achieved, the resisting end shaft 1a is used for installing the carbon fiber coating layer 2, and the placement gap is used for installing the mixed filler 5.
The two ends of the interior of the coated carbon fiber layer 2 are provided with matching protrusions 2a, the matching protrusions 2a are clamped on the resisting end shafts 1a of the corresponding permanent magnet blocks 1, the inner diameters of the matching protrusions 2a are equal to the shaft diameter of the resisting end shafts 1a, and the inner diameter of the coated carbon fiber layer 2 is equal to the outer diameter of the permanent magnet blocks 1; the matching protrusion 2a is clamped on the resisting end shaft 1a of the corresponding permanent magnet block 1, the carbon fiber coating layer 2 is installed, the permanent magnet block 1 and the mixed filling body 5 are coated inside, and stable installation is guaranteed.
The inner side of the mixed filling body 5 is provided with a second placing hole 5c, the diameter of the second placing hole 5c is equal to that of the first placing hole 1d, the outer side of the mixed filling body 5 is provided with a plurality of clamping protrusions 5a which are uniformly distributed on the circumference, clamping gaps 5b are formed among the clamping protrusions 5a, the clamping protrusions 5a are clamped in the placing gaps, and the inserting protrusions 1b are clamped in the clamping gaps 5 b; place two 5c of hole and place the cooperation of hole 1d, install the surface at the pivot, the protruding 5a block of block is inside placing the clearance, it is inside at block clearance 5b to insert protruding 1b block, mix obturator 5 and install stably between two permanent magnet blocks 1, mix obturator 5 can strengthen the excitation magnetic field of rotor, and can absorb the high-speed rotation of rotor time, the deformation stress that produces on permanent magnet block 1, thereby reduce permanent magnet block 1 and lead to the too high risk of its border local stress because of high rotational speed.
The inner composite component comprises a first magnetic powder glue film layer 3a, a second magnetic powder glue film layer 3b and a third magnetic powder glue film layer 3c which are wound from inside to outside in a tensile stress applying mode, the first magnetic powder glue film layer 3a is coated on the outer side of the coated carbon fiber layer 2, and a first carbon fiber layer 3d formed by double-layer carbon fibers wound in the tensile stress applying mode is arranged on the outer side of the third magnetic powder glue film layer 3 c; from inside to outside in order to exert the first magnetic powder glued membrane layer 3a, second magnetic powder glued membrane layer 3b and the third magnetic powder glued membrane layer 3c of tensile stress winding, effective parcel is in the 2 outsides of cladding carbon fiber layer, and the stable parcel of first carbon fiber layer 3d is in the outside of third magnetic powder glued membrane layer 3 c.
The outer composite component comprises a fourth magnetic powder glue film layer 3e, a fifth magnetic powder glue film layer 3f and a sixth magnetic powder glue film layer 3g which are wound from inside to outside in a tensile stress applying mode, the fourth magnetic powder glue film layer 3e is coated on the outer side of the first carbon fiber layer 3d, a second carbon fiber layer 3h formed by double-layer carbon fibers wound in the tensile stress applying mode is arranged on the outer side of the sixth magnetic powder glue film layer 3g, and the sheath 4 is coated on the outer side of the second carbon fiber layer 3 h; from inside to outside with the winding fourth magnetic powder glued membrane layer 3e of mode of exerting tensile stress, fifth magnetic powder glued membrane layer 3f and sixth magnetic powder glued membrane layer 3g, effective parcel is in the first carbon fiber layer 3d outside, the cladding of second carbon fiber layer 3h is in the outside of sixth magnetic powder glued membrane layer 3g, 4 cladding of sheath are in the 3h outside of second carbon fiber layer, guarantee that outer composite component stable cladding is in the interior composite component outside, 4 cladding of sheath are in the 3h outside of second carbon fiber layer, reach the fastening protection effect.
The permanent magnet block 1 is made of a permanent magnet with higher remanence density, the first carbon fiber layer 3d, the second carbon fiber layer 3h and the coated carbon fiber layer 2 are made of T700-grade carbon fibers, the mixed filler 5, the first magnetic powder adhesive film layer 3a, the second magnetic powder adhesive film layer 3b, the third magnetic powder adhesive film layer 3c, the fourth magnetic powder adhesive film layer 3e, the fifth magnetic powder adhesive film layer 3f and the sixth magnetic powder adhesive film layer 3g are made of magnetic powder adhesive films formed by uniformly mixing mixed magnetic powder and epoxy resin according to a proportion and then curing, and the sheath 4 is made of a carbon fiber layer formed by winding a plurality of carbon fibers in a tensile stress applying manner; the content of the magnetic powder adhesive film can be maximized, and the using amount of the permanent magnet block 1 can be minimized, so that the eddy current loss in the motor rotor can be further reduced, and the critical rotating speed of the motor rotor can be indirectly improved.
The working principle of the utility model is as follows:
placing a mixed filling body 5 between two permanent magnet blocks 1, inserting and matching insertion bulges 1b and insertion gaps 1c of the two permanent magnet blocks 1 to form a placing gap, clamping bulges 5a are clamped in the placing gap, inserting and matching bulges 1b are clamped in the clamping gaps 5b, placing holes two 5c are matched with placing holes one 1d for sticking the permanent magnet blocks 1 on the outer surface of a rotating shaft so as to minimize the rotating radius of the permanent magnet blocks 1 and realize the technical effect of minimizing the centrifugal force during high-speed rotation of the permanent magnet blocks, matching bulges 2a are clamped on a resisting end shaft 1a of the corresponding permanent magnet blocks 1, wrapping the permanent magnet blocks 1 and the mixed filling body 5 in a carbon fiber coating layer 2, and wrapping an inner composite component formed by a first magnetic powder adhesive film layer 3a, a second magnetic powder adhesive film layer 3b and a third magnetic powder adhesive film layer 3c which are wound from inside to outside in a tensile stress applying manner, on the outer side of the carbon fiber coating layer 2, first carbon fiber layer 3d cladding is in the third magnetic powder glued membrane layer 3c outside, from inside to outside the outer composite member cladding in the first carbon fiber layer 3d outside of the winding fourth magnetic powder glued membrane layer 3e of the mode in order to exert tensile stress and the formation of fifth magnetic powder glued membrane layer 3f, cladding second carbon fiber layer 3h in the outside of sixth magnetic powder glued membrane layer 3g again, 4 cladding of sheath are in the second carbon fiber layer 3h outside, when reaching the fastening protection effect, the content of maximize magnetic powder glued membrane, can minimize the quantity of permanent magnet block 1, thereby can further reduce the eddy current loss in the electric motor rotor, and indirectly promote electric motor rotor's critical speed.
In conclusion, the carbon fiber layer 2, the permanent magnet blocks 1 and the mixed filler 5 are matched to form the permanent magnet assembly, the mixed filler 5 can enhance the excitation magnetic field of the rotor of the permanent magnet assembly and can absorb the deformation stress generated on the permanent magnet blocks 1 when the rotor rotates at a high speed, so that the risk of overhigh local stress on the edges of the permanent magnet blocks 1 due to high rotating speed is reduced; the permanent magnet component is quickly installed and fastened and locked by matching the coated carbon fiber layer 2 with the resisting end shaft 1 a; through the cooperation of the magnetic powder composite component 3 and the sheath 4, the content of a magnetic powder adhesive film can be maximized, and the using amount of the permanent magnet block 1 can be minimized, so that the eddy current loss in the motor rotor can be further reduced, and the critical rotating speed of the motor rotor can be indirectly improved.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (7)
1. The utility model provides a compound permanent magnet for permanent magnet motor, includes cladding carbon fiber layer (2), two permanent magnet blocks (1) and magnetic composite assembly (3) of relative placement, its characterized in that, be equipped with mixed obturator (5) between two permanent magnet blocks (1), cladding carbon fiber layer (2) cladding is in the outside of two permanent magnet blocks (1), and magnetic composite assembly (3) comprises interior composite component and the outer composite component that sets up in the interior composite component outside, and the coaxial suit of interior component is in the cladding carbon fiber layer (2) outside, and the coaxial cover of outside component of magnetic composite assembly (3) is equipped with sheath (4).
2. The composite permanent magnet for the permanent magnet motor according to claim 1, wherein the carbon fiber-coated layer (2), the two oppositely-arranged permanent magnet blocks (1) and the mixed filler (5) form a permanent magnet assembly, a plurality of insertion protrusions (1b) are uniformly distributed on the end surface of each permanent magnet block (1) in the circumference, an insertion gap (1c) is formed between the insertion protrusions (1b), a first placing hole (1d) is formed inside each permanent magnet block (1), a resisting end shaft (1a) is arranged on the outer side of each permanent magnet block (1), the insertion protrusions (1b) are inserted into the insertion gaps (1c) of the other permanent magnet block (1), and a placing gap is formed between the insertion protrusions (1b) of the two oppositely-arranged permanent magnet blocks (1).
3. The composite permanent magnet for the permanent magnet motor according to claim 2, wherein the two ends of the inside of the coated carbon fiber layer (2) are provided with matching protrusions (2a), the matching protrusions (2a) are clamped on the resisting end shafts (1a) of the corresponding permanent magnet blocks (1), the inside diameter of the matching protrusions (2a) is equal to the shaft diameter of the resisting end shafts (1a), and the inside diameter of the coated carbon fiber layer (2) is equal to the outside diameter of the permanent magnet blocks (1).
4. The composite permanent magnet for the permanent magnet motor according to claim 2 or 3, wherein a second placing hole (5c) is formed in the inner side of the hybrid filler (5), the second placing hole (5c) is equal to the first placing hole (1d in diameter), a plurality of clamping protrusions (5a) are uniformly distributed on the outer side of the hybrid filler (5) in the circumferential direction, clamping gaps (5b) are formed between the clamping protrusions (5a), the clamping protrusions (5a) are clamped in the placing gaps, and the inserting protrusions (1b) are clamped in the clamping gaps (5 b).
5. The composite permanent magnet for the permanent magnet motor according to claim 1, wherein the inner composite member comprises a first magnetic powder adhesive film layer (3a), a second magnetic powder adhesive film layer (3b) and a third magnetic powder adhesive film layer (3c) which are wound in a tensile stress manner from inside to outside, the first magnetic powder adhesive film layer (3a) is coated on the outer side of the coated carbon fiber layer (2), and a first carbon fiber layer (3d) formed by double-layer carbon fibers wound in a tensile stress manner is arranged on the outer side of the third magnetic powder adhesive film layer (3 c).
6. The composite permanent magnet for the permanent magnet motor according to claim 5, wherein the outer composite component comprises a fourth magnetic powder adhesive film layer (3e), a fifth magnetic powder adhesive film layer (3f) and a sixth magnetic powder adhesive film layer (3g) which are wound from inside to outside in a tensile stress applying manner, the fourth magnetic powder adhesive film layer (3e) is coated on the outer side of the first carbon fiber layer (3d), a second carbon fiber layer (3h) formed by double layers of carbon fibers wound in a tensile stress applying manner is arranged on the outer side of the sixth magnetic powder adhesive film layer (3g), and the sheath (4) is coated on the outer side of the second carbon fiber layer (3 h).
7. The composite permanent magnet according to claim 6, wherein the permanent magnet block (1) is made of a permanent magnet having a high residual magnetic density, the first carbon fiber layer (3d), the second carbon fiber layer (3h) and the coated carbon fiber layer (2) are made of T700-grade carbon fibers, the hybrid filler (5), the first magnetic powder adhesive film layer (3a), the second magnetic powder adhesive film layer (3b), the third magnetic powder adhesive film layer (3c), the fourth magnetic powder adhesive film layer (3e), the fifth magnetic powder adhesive film layer (3f) and the sixth magnetic powder adhesive film layer (3g) are made of magnetic powder adhesive films, and the sheath (4) is made of a carbon fiber layer formed by winding a plurality of carbon fibers in a tensile stress applying manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121479531.5U CN215451074U (en) | 2021-07-01 | 2021-07-01 | Composite permanent magnet for permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121479531.5U CN215451074U (en) | 2021-07-01 | 2021-07-01 | Composite permanent magnet for permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215451074U true CN215451074U (en) | 2022-01-07 |
Family
ID=79714186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121479531.5U Active CN215451074U (en) | 2021-07-01 | 2021-07-01 | Composite permanent magnet for permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215451074U (en) |
-
2021
- 2021-07-01 CN CN202121479531.5U patent/CN215451074U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104170219B (en) | Motor | |
| US8033007B2 (en) | Method of making rotor of brushless motor | |
| US8836192B2 (en) | Axial gap rotating electrical machine and rotor used therefor | |
| EP1923982A2 (en) | Axial air gap type electric motor | |
| CN106655605A (en) | Magnetic suspension flywheel battery for sandwich-type electric car and work method thereof | |
| US5204570A (en) | Spheroidal machine | |
| CN107516952A (en) | Permanent magnet DC motor | |
| CN103925291B (en) | A kind of permanent magnet bias mixing axial magnetic bearing | |
| CN215451074U (en) | Composite permanent magnet for permanent magnet motor | |
| CN206461502U (en) | A kind of motor | |
| CN108521178A (en) | A kind of restricted corner acoustic vibration motor of magnetic field quadrupole positioning | |
| WO2020063579A1 (en) | Vehicle seat and permanent magnet dc motor thereof | |
| WO2024037268A1 (en) | Axial motor rotor, axial motor, power assembly and electric device | |
| US20200119614A1 (en) | Flywheel energy storage system | |
| CN114337187A (en) | In-wheel motor and vehicle | |
| WO2024037312A1 (en) | Axial electric motor rotor, axial electric motor, power assembly and vehicle | |
| CN110679062A (en) | Split stator body for an electrical machine | |
| CN208939787U (en) | Axial disk permanent magnet machine rotor magnetic conductive board assembly tooling and system | |
| CN208589902U (en) | Vibrating motor | |
| JP2005269882A (en) | Spindle motor and its stator structure | |
| CN211574038U (en) | Radial non-coupling quadrupole hybrid magnetic bearing | |
| CN111969745A (en) | High-speed surface-mounted permanent magnet motor rotor structure and manufacturing method | |
| JP2003332128A (en) | Mold for manufacturing magnet, method for manufacturing magnet, anisotropic magnet, and permanent magnet | |
| JP2021069161A (en) | Electric tool and motor | |
| CN217469728U (en) | Sound wave motor and electric toothbrush |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |