CN217216133U - Carbon fiber motor rotor, motor and vehicle - Google Patents
Carbon fiber motor rotor, motor and vehicle Download PDFInfo
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- CN217216133U CN217216133U CN202220975822.1U CN202220975822U CN217216133U CN 217216133 U CN217216133 U CN 217216133U CN 202220975822 U CN202220975822 U CN 202220975822U CN 217216133 U CN217216133 U CN 217216133U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The utility model provides a carbon fiber electric motor rotor. The carbon fiber motor rotor includes: a plurality of annular silicon steel sheet that are, the magnet steel, pivot and carbon fiber assembly, be provided with at least a set of magnetic steel groove and the magnetic bridge that separates that corresponds on the radial direction of silicon steel sheet, the magnetic steel groove with separate the magnetic bridge evenly distributed on the circumferencial direction of silicon steel sheet, the magnetic steel groove with separate the magnetic bridge and be connected, the magnet steel is embedded in the magnet steel groove rather than matching, the silicon steel sheet is folded and is pressed in the axial direction of pivot, forms rotor core, carbon fiber assembly parcel rotor core. The carbon fiber assembly is adopted to apply pre-pressure to the rotor core to resist centrifugal force, and the magnetism isolating bridge is arranged to be connected with the magnetic steel groove, so that silicon steel sheets can be integrally manufactured and processed, and the manufacturing process is simple. The utility model also provides a motor and vehicle.
Description
Technical Field
The utility model relates to the technical field of electric machines, especially, relate to a carbon fiber electric motor rotor, a motor and a vehicle.
Background
With the rapid development of the domestic electric automobile industry, a driving motor as one of key parts is also rapidly developed. The motor for driving the passenger car mainly takes a permanent magnet synchronous motor as a main part at present, and because the rotating speed of a driving motor is designed to be higher, the driving permanent magnet motor in China at present mainly adopts an embedded permanent magnet motor. After the motor speed is increased, the magnetic steel of the motor rotor can fall off due to the centrifugal force generated by rotation because the mechanical strength of the bonding process is insufficient, and therefore a thicker magnetic isolation bridge needs to be arranged to resist the centrifugal force.
In the related art, a discrete rotor core is wrapped by carbon fibers to form a complete rotor core, so that the arrangement of a magnetic isolation bridge is omitted. However, since the rotor core is formed by combining a plurality of discrete parts, in the manufacturing and assembling processes, the positioning of the magnetic steel in the rotor core needs to be completed by at least two discrete parts together, and needs to be performed synchronously when the carbon fiber is wound, which causes the problems of difficult processing and manufacturing of the motor rotor, large deviation of the installation position of the magnetic steel and the like.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made in order to provide a carbon fiber electric machine rotor, an electric machine and a vehicle that overcome or at least partially solve the above problems.
In a first aspect of the present invention, an embodiment of the present invention provides a carbon fiber electric machine rotor, including:
the magnetic separation device comprises a circular silicon steel sheet, wherein at least one group of magnetic steel grooves and corresponding magnetic separation bridges are arranged in the radial direction of the silicon steel sheet; the magnetic steel grooves and the magnetic isolation bridges are uniformly distributed in the circumferential direction of the silicon steel sheet; the magnetic steel groove is connected with the magnetic isolation bridge;
the magnetic steel is embedded in the magnetic steel groove matched with the magnetic steel;
the silicon steel sheets are laminated in the axial direction of the rotating shaft to form a rotor iron core;
and the carbon fiber assembly wraps the rotor core.
In a second aspect of the present invention, an embodiment of the present invention further provides a motor, including: carbon fiber motor rotor, stator and motor end cover as described above.
In a third aspect of the present invention, an embodiment of the present invention further provides a vehicle, including the motor as described above.
The utility model discloses an each embodiment can realize one in the following advantage at least:
the embodiment of the utility model provides an apply the precompression through the carbon fiber subassembly to the rotor core for centrifugal force and the precompression that produce when rotating at a high speed are balanced, in order to offset centrifugal force. And the magnetism isolating bridge is connected with the magnetic steel groove, so that the silicon steel sheet is kept in an integrated structure, and can be integrally formed in the machining and manufacturing process, and the process flow is simple and convenient. The magnet steel is embedded in the magnet steel groove, and the magnet steel can be directly positioned by the magnet steel groove, so that the installation position deviation of the magnet steel is reduced.
Drawings
Fig. 1 is an overall structural view of a carbon fiber motor rotor according to the present invention;
fig. 2 is a partial structural view of a carbon fiber motor rotor according to the present invention;
fig. 3 is a partial structural view of another carbon fiber motor rotor according to the present invention;
fig. 4 is a partial structural view of a carbon fiber motor rotor according to another embodiment of the present invention;
fig. 5 is a partial structural view of a carbon fiber motor rotor according to another embodiment of the present invention.
Description of reference numerals:
100-silicon steel sheet, 110-magnetic steel groove, 111-first sub-magnetic steel groove, 112-second sub-magnetic steel groove and 120-magnetic isolation bridge;
200-magnetic steel;
300-carbon fiber assembly.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, an overall structure diagram of a carbon fiber motor rotor according to the present invention is shown. The utility model discloses an in the embodiment carbon fiber electric motor rotor includes: the magnetic steel component comprises a silicon steel sheet 100 in a circular ring shape, magnetic steel 200, a carbon fiber component 300 and a rotating shaft (not marked in the figure).
The silicon steel sheet 100 may be stamped from a cold rolled silicon steel coil using a stamping process. The evenly distributed magnetic steel grooves 110 can be punched on the circular ring-shaped surface of the silicon steel sheet 100 during punching, the magnetic steel 200 is embedded in the magnetic steel grooves 110, and the size and the shape of the magnetic steel grooves 110 are matched with those of the magnetic steel 200. If the magnetic steel is rectangular magnetic steel 200, the magnetic steel slot 110 is also rectangular; the width of the magnetic steel slot 110 and the width of the magnetic steel 200 form a transition fit or an interference fit, so that the magnetic steel 200 can be fixed in the magnetic steel slot 110. In addition, the magnetic poles of the magnetic steel 200 embedded in the magnetic steel slot 110 also need to be matched.
Further, the magnetic steel 200 used on the carbon fiber rotor includes a south pole magnetic pole and a north pole magnetic pole, i.e., one magnetic steel 200 may outwardly exhibit either a south pole magnetic pole or a north pole magnetic pole. After the magnetic steel 200 is embedded in the magnetic steel slot 110, the magnetic steel 200 of the south pole magnetic pole and the magnetic steel 200 of the north pole magnetic pole are alternately distributed in the circumferential direction of the silicon steel sheet 100. That is, in the circumferential direction of the silicon steel sheet 100, the magnetic poles of the magnetic steel 200 embedded in the magnetic steel groove 110 are opposite to the magnetic poles of the two groups of magnetic steels 200. As shown in fig. 1, when the magnetic steel 200 is a south pole (S), the front and rear magnetic steels in the circumferential direction of the silicon steel sheet 100 are north pole (N). In addition, on the silicon steel sheet 100, two sets of magnetic steels 200 of a set of north-pole magnetic steels and a set of south-pole magnetic steels form a pair of poles. The number of the antipodes of the silicon steel sheet 100 in the circumferential direction is 3-6. The torque fluctuation of the carbon fiber motor rotor in high-speed rotation can be reduced, and therefore the running stability of the carbon fiber motor rotor is improved. As shown in fig. 1, there are 4 pairs of poles in the circumferential direction of the silicon steel sheet 100.
When the silicon steel sheet 100 is formed by stamping, a steel material with a certain width can be reserved between the two magnetic steel grooves 110 or between the magnetic steel grooves 110 and the outer edge of the silicon steel sheet as the magnetic isolation bridge 120, so that the magnetic isolation bridge 120 is connected with the magnetic steel grooves 110. Specifically, the magnetic isolation bridge 120 can be connected with the outer edge of one end of the magnetic steel groove 110 at least, so that the silicon steel sheet 100 is kept in an integrated structure, the silicon steel sheet 100 can be formed by punching through one set of continuous dies, and the process flow is simple and convenient. And can place magnet steel 200 at magnet steel groove 110, magnet steel groove 110 directly is used for the location of magnet steel 200 promptly, because magnet steel groove 110 processes the back, and relative position on silicon steel sheet 100 is stable, and magnet steel 200 is embedded to magnet steel groove 110 can guarantee that magnet steel 200's mounted position is accurate.
In the axial direction of the silicon steel sheet 100, the rotation shaft may pass through an inner ring on the circular ring surface of the silicon steel sheet 100. The silicon steel sheets 100 are laminated in the axial direction of the rotating shaft to form a rotor core. The compactness and length of the lamination can be determined by those skilled in the art according to the magnetic field density of the carbon fiber rotor, and the embodiment of the present invention is not particularly limited thereto.
The carbon fiber assembly 300 is used for wrapping the outer surface of the rotor core, so that the carbon fiber assembly 300 generates pre-pressure on the rotor core. When the rotor core rotates at a high speed, the pre-pressure and the centrifugal force are balanced to prevent the rotor core from deforming and the magnetic steel 200 from swinging in the radial direction so as to resist the centrifugal force, and the maximum rotating speed of the carbon fiber motor rotor can be achieved. Further, in order to apply a certain pre-stress to the rotor core by the carbon fiber assembly 300, the inner diameter of the carbon fiber assembly 300 and the outer diameter of the rotor core may form a transition fit or an interference fit.
For the carbon fiber assembly 300, after the silicon steel sheets 100 are laminated to form the rotor core, at least one circle of carbon fiber wires are wound around the outer edge of the rotor core to form the carbon fiber assembly 300. The process of winding carbon fiber filaments can be selected by those skilled in the art according to actual needs, and the embodiments of the present invention are not limited thereto. When the carbon fiber wire is wound on the outer edge of the rotor core for only one circle, the diameter of the carbon fiber wire is 0.2-1.5 mm. And when the carbon fiber silk twines many circles on rotor core outer fringe, can adopt the carbon fiber silk of littleer diameter, makes carbon fiber subassembly 300 thickness keep 0.2 ~ 1.5 millimeters.
For the carbon fiber assembly 300, the carbon fiber assembly 300 may also be a carbon fiber sleeve. After the silicon steel sheets 100 are laminated to form the rotor core, the carbon fiber sleeve is sleeved on the outer edge of the rotor core. It should be noted that the length of the carbon fiber sleeve is greater than that of the rotor core, so that the carbon fiber sleeve can completely wrap the rotor core. In addition, the thickness of the carbon fiber sleeve is 0.2-1.5 mm.
The utility model discloses an in the embodiment, on silicon steel sheet 100's radial direction, when being provided with multiunit magnetic steel groove 110, multiunit magnetic steel groove 110's size can be inequality, and on radial direction, the magnetic steel groove 100 size that is close to the centre of a circle more is big more. And, the magnetic steels embedded in the multiple groups of magnetic steel slots 110 in the same radial direction are the magnetic steels with the same magnetic poles. That is, the magnetic steel of south pole (S) or the magnetic steel of north pole (N) needs to be embedded in the multiple groups of magnetic steel slots 110. Referring to fig. 1, two sets of magnetic steel slots 110 are arranged in the radial direction of the silicon steel sheet 100, the magnetic steel slot 110 near the center of the circle is larger than the magnetic steel slot 110 far away from the center of the circle, and magnetic steel of south pole magnetic poles is embedded in the two sets of magnetic steel slots 110.
In an embodiment of the present invention, the magnetic steel grooves 110 may extend toward the outer edge of the silicon steel sheet 100, and an open structure is formed on the outer edge of the silicon steel sheet 100. Specifically, the open structure may be an opening, and as shown in fig. 2, the magnetic steel slot 110 forms an opening on an outer edge of the silicon steel sheet.
The utility model discloses an in the embodiment, magnetism steel slot 110 is being connected with magnetism bridge 120 near the outer fringe of centre of a circle side, and on the circumferencial direction of silicon steel sheet, when magnetism steel slot 110 set up with a pair of form, can connect same magnetism bridge with the one side outer fringe of being close to the centre of a circle to the magnet steel groove.
The utility model discloses an in the embodiment, with magnet steel groove 110 of pair including first sub-magnet steel groove 111 and second sub-magnet steel groove 112, first sub-magnet steel groove 111 is the same with the size and the shape of second sub-magnet steel groove 112, and both are the V font of opening to the silicon steel sheet outer fringe and arrange for the regional magnetic saturation of V font between two sub-magnet steel grooves reduces, thereby improves the operating efficiency of motor. Referring to fig. 2, the first sub-magnetic steel groove 111 and the second sub-magnetic steel groove 112 are V-shaped, and the opening direction of the V-shape faces the outer edge of the silicon steel sheet.
The utility model discloses an in the embodiment, the thickness of magnetism bridge 120 that separates is 0.2 ~ 1 millimeter, when making magnet steel 200's magnetic field pass magnetism bridge, the magnetic leakage flux in magnetic field can reduce to the moment of torsion density and the power density of carbon fiber rotor have been improved.
Referring to fig. 3, a partial structure diagram of another carbon fiber motor rotor according to the present invention is shown. The carbon fiber motor rotor includes: the device comprises a silicon steel sheet 100 in a circular ring shape, magnetic steel 200, a carbon fiber assembly 300 and a rotating shaft.
The silicon steel sheets 100 are laminated in the axial direction of the rotating shaft to form a rotor core. In addition, in order to improve NVH (Noise, Vibration, and Harshness) characteristics of the motor, each silicon steel sheet 100 may be offset by a certain angle with respect to the previous silicon steel sheet 100 during lamination to form a rotor core with skewed poles. The magnetic steel slots 110 and the corresponding magnetic isolation bridges 120 are arranged on the silicon steel sheet 100, the magnetic steel slots 110 form an open structure on the outer edge of the silicon steel sheet 100, and the magnetic steel slots 110 are used for placing the magnetic steel 200. The outer edge of the rotor core is wound with a layer of carbon fiber wires or a carbon fiber sleeve is fixed to wrap the rotor core as the carbon fiber component 300, so that the deformation of the rotor core during high-speed rotation is reduced, and the rotating centrifugal force is resisted.
Further, after one side of the magnetic steel slot 110 forms an open structure on the outer edge of the silicon steel sheet 100, a magnetic isolation bridge 120 may be disposed on the other side of the magnetic steel slot 110. At this time, one side of the magnetic isolation bridge 120 is connected to the magnetic steel groove 110, and the other side of the magnetic isolation bridge 120 is the outer edge of the silicon steel sheet 100. Namely, one magnetic steel slot 110 is corresponding to one magnetic isolation bridge 120. In addition, when there are multiple sets of magnetic steel slots 110 in the radial direction of the silicon steel sheet 100, the magnetic isolation bridges 120 may be disposed on the same side of the multiple sets of magnetic steel slots 110, or on different sides. As shown in fig. 3, when two sets of magnetic steel slots 110 exist in the radial direction of the silicon steel sheet 100, the magnetic isolation bridge 120 corresponding to the magnetic steel slot 110 close to the center of the circle is disposed on the right side of the magnetic steel slot 110, and the magnetic isolation bridge 120 corresponding to the magnetic steel slot 110 far away from the center of the circle is disposed on the left side of the magnetic steel slot 110. As shown in fig. 4, when two sets of magnetic steel slots 110 exist in the radial direction of the silicon steel sheet 100, the magnetic isolation bridges 120 corresponding to the magnetic steel slots 110 close to the center of the circle and the magnetic isolation bridges 120 corresponding to the magnetic steel slots 110 far from the center of the circle are both disposed on the right side of the magnetic steel slots 110.
In addition, magnetic isolation bridges 120 can be arranged on two sides of the magnetic steel groove 110, at this time, two sides of the magnetic steel groove 110 are respectively connected with one magnetic isolation bridge 120, and the outer edge of the silicon steel sheet 100 is a complete circle. Two magnetic isolation bridges 120 are correspondingly arranged in one magnetic steel slot 110. Specifically, as shown in fig. 5, both sides of the magnetic steel slot 110 are connected to the magnetic isolation bridge 120, and the silicon steel sheet 100 has no opening.
The embodiment of the utility model provides a motor is still provided, include: carbon fiber motor rotor, stator and motor end cover as described above. Wherein, the inside chamber that holds that exists of stator, the carbon fiber motor rotor installation is in holding the chamber. The stator and the motor end cover can be detachably connected, and particularly, the stator and the motor end cover can be connected through fasteners such as screws. The carbon fiber motor rotor is rotatably connected in the motor end cover, namely the carbon fiber motor rotor can freely rotate on the motor end cover. Specifically, the carbon fiber motor rotor may be connected to the motor end cap via a bearing.
The embodiment of the utility model provides a vehicle is still provided, include as above the motor. The motor is used for driving the vehicle to run.
Finally, it should also be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "include", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or terminal device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or terminal equipment comprising the element.
The carbon fiber motor rotor, the motor and the vehicle provided by the utility model are introduced in detail, and the principle and the implementation mode of the utility model are explained by applying a specific example, and the explanation of the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. A carbon fiber electric machine rotor comprising:
the magnetic separation device comprises a circular silicon steel sheet, wherein at least one group of magnetic steel grooves and corresponding magnetic separation bridges are arranged in the radial direction of the silicon steel sheet; the magnetic steel grooves and the magnetic isolation bridges are uniformly distributed in the circumferential direction of the silicon steel sheet; the magnetic steel groove is connected with the magnetic isolation bridge;
the magnetic steel is embedded in the magnetic steel groove matched with the magnetic steel;
the silicon steel sheets are laminated in the axial direction of the rotating shaft to form a rotor iron core;
and the carbon fiber assembly wraps the rotor core.
2. The carbon fiber motor rotor as claimed in claim 1, wherein the magnetic steel slots form an open structure at an outer edge of the silicon steel sheet.
3. The carbon fiber motor rotor of claim 1, wherein the magnetic isolation bridge is connected to an outer edge of the magnetic steel slot.
4. The carbon fiber motor rotor as claimed in any one of claims 1 to 3, wherein the carbon fiber assembly is formed by winding carbon fiber filaments around an outer edge of the rotor core; or
The carbon fiber component is a carbon fiber sleeve.
5. The carbon fiber motor rotor as claimed in claim 4, wherein the thickness of the carbon fiber assembly is 0.2-1.5 mm.
6. The carbon fiber motor rotor as claimed in any one of claims 1 to 3, wherein when a plurality of sets of magnetic steel slots are provided in the radial direction of the silicon steel sheet, magnetic steel of the same magnetic pole is embedded in the plurality of sets of magnetic steel slots.
7. The carbon fiber electric machine rotor of any of claims 1 to 3, wherein the magnetic steel comprises:
the silicon steel sheet comprises south pole magnetic poles and north pole magnetic poles, wherein the south pole magnetic poles and the north pole magnetic poles are alternately distributed in the circumferential direction of the silicon steel sheet.
8. The carbon fiber motor rotor as claimed in any one of claims 1 to 3, wherein the thickness of the magnetic isolation bridge is 0.2 to 1 mm.
9. An electric machine comprising: the carbon fiber motor rotor, stator, and motor end cap of claims 1-8.
10. A vehicle, comprising: the electric machine of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220975822.1U CN217216133U (en) | 2022-04-25 | 2022-04-25 | Carbon fiber motor rotor, motor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220975822.1U CN217216133U (en) | 2022-04-25 | 2022-04-25 | Carbon fiber motor rotor, motor and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN217216133U true CN217216133U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220975822.1U Active CN217216133U (en) | 2022-04-25 | 2022-04-25 | Carbon fiber motor rotor, motor and vehicle |
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| CN (1) | CN217216133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116404777A (en) * | 2023-03-01 | 2023-07-07 | 天蔚蓝电驱动科技(江苏)有限公司 | Rotor without main magnetic bridge and manufacturing method of rotor |
-
2022
- 2022-04-25 CN CN202220975822.1U patent/CN217216133U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116404777A (en) * | 2023-03-01 | 2023-07-07 | 天蔚蓝电驱动科技(江苏)有限公司 | Rotor without main magnetic bridge and manufacturing method of rotor |
| CN116404777B (en) * | 2023-03-01 | 2024-03-05 | 天蔚蓝电驱动科技(江苏)有限公司 | Rotor without main magnetic bridge and manufacturing method of rotor |
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