CN209805525U - Rotor chip, rotor thereof and motor - Google Patents
Rotor chip, rotor thereof and motor Download PDFInfo
- Publication number
- CN209805525U CN209805525U CN201920572893.5U CN201920572893U CN209805525U CN 209805525 U CN209805525 U CN 209805525U CN 201920572893 U CN201920572893 U CN 201920572893U CN 209805525 U CN209805525 U CN 209805525U
- Authority
- CN
- China
- Prior art keywords
- chip
- rotor
- magnetic
- magnetism isolating
- center
- 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
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a rotor chip and rotor and motor thereof, chip including the disc, be equipped with 16 magnet steel grooves on the chip, every two adjacent magnet steel grooves constitute 1 group's magnetic channel pair, 2 magnet steel grooves in every group magnetic channel pair adopt V-arrangement and opening direction towards the outside of chip, 8 groups of magnetic channels are to the central symmetric distribution who encircles the chip, two magnet steel grooves in the same group magnetic channel pair all set up about a certain straight line n symmetry that passes the chip center, the chip all is provided with a set of magnetism isolating punch combination in the V-arrangement opening side of every group magnetic channel pair, magnetism isolating punch combination includes two first magnetism isolating holes and two second magnetism isolating holes that set up about straight line n symmetry, second magnetism isolating hole is located the both sides in first magnetism isolating hole; the utility model discloses can effectively improve the magnetic line of force distribution that adopts the rotor of this rotor chip to weaken the tooth's socket effect of motor in order to reach the undulant purpose of improvement torque, and also need not to set up the structure of stator chute and rotor chute, in order to simplify production processes reduce cost.
Description
Technical Field
The utility model relates to the technical field of electric machines, especially, relate to a rotor chip and have this rotor chip's rotor and motor.
Background
The power motor for the electric automobile has high requirements on output torque fluctuation, the torque fluctuation is large, the driving comfort and riding comfort of the automobile are deteriorated, and therefore small torque fluctuation is an important index for measuring the power motor. At present, a power motor with a 48-slot stator and an 8-pole rotor is available, and in order to improve the torque fluctuation of the power motor, two methods are mainly used; one is that the stator of the electrical machinery adopts the way of the stator chute, stagger a tiny angle along certain direction between the stator chip that will be overlapped, thus make the winding slot of the stator deflect the axial certain angle, in order to achieve the purpose of weakening the cogging effect and improving the torque ripple, this kind of way is because need stagger a tiny angle to every stator chip in the course of making the electrical machinery, therefore its production process is comparatively complicated, the cost of manufacture is often higher; the other type is a form of rotor skewed slots, namely, rotor cores are arranged into a plurality of sections, a certain angle is staggered between each section of rotor core, and each section of rotor core is respectively inserted with a magnetic steel block, so that a certain angle is staggered between the magnetic steel blocks on each section of rotor, and the purpose of weakening the cogging effect and improving the torque fluctuation is achieved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a rotor chip and have this rotor chip's rotor and motor to it is undulant to improve the moment of torsion of motor, has the production processes that can simplify the motor simultaneously, reduces the manufacturing cost of motor.
The utility model provides a technical scheme that its technical problem adopted is:
On one hand, the rotor chip comprises a disc-shaped chip, 16 magnetic steel grooves are arranged on the chip, every two adjacent magnetic steel grooves form 1 group of magnetic groove pairs, 2 magnetic steel grooves in each group of magnetic groove pairs are arranged in a V shape, the opening direction of the magnetic steel grooves faces the outer side of the chip, 8 groups of magnetic groove pairs are symmetrically distributed around the center of the chip, two magnetic steel grooves in the same group of magnetic groove pairs are symmetrically arranged relative to a certain straight line n passing through the center of the chip, the chip is provided with a group of magnetic isolation hole groups on the V-shaped opening side of each group of magnetic groove pairs, each magnetic isolation hole group comprises two first magnetic isolation holes and two second magnetic isolation holes which are symmetrically arranged relative to the straight line n, and the second magnetic isolation holes are positioned on two sides of the first magnetic isolation holes; the included angle formed by connecting lines between the centers of two first magnetism isolating holes in the same group and the center of the chip is A, the angle of A is 15 degrees +/-0.5 degrees, the included angle formed by connecting lines between the centers of the first magnetism isolating holes in the same group and the centers of the adjacent second magnetism isolating holes and the center of the chip is B, and the angle of B is 7.5 degrees +/-0.5 degrees; the distance between a straight line m passing through the center of the first magnetism isolating hole and the center of the chip and two intersection points between the outer contour of the chip and the outer edge of the magnetic steel groove is E, and the diameter d1 of the first magnetism isolating hole is equal to the diameter of the first magnetism isolating holeAnd the minimum distance G from the center of the first magnetism isolating hole to the outer contour of the chip isTo (c) to (d); the distance between a straight line y passing through the center of the second magnetism isolating hole and the center of the chip and two intersection points between the outer contour of the chip and the outer edge of the magnetic steel groove is F, and the diameter d2 of the second magnetism isolating hole is equal to the diameter of the second magnetism isolating holeAnd the minimum distance H from the center of the second magnetism isolating hole to the outer contour of the chip isIn the meantime.
As an improvement of the technical scheme, the center of the chip is provided with a shaft hole.
Furthermore, a plurality of weight reduction grooves and/or weight reduction holes are formed in the chip and are symmetrically distributed around the center of the chip.
Further, the lightening slots and/or lightening holes are/is located between the shaft hole and the magnetic steel slot.
In another aspect, a rotor includes a plurality of rotor core plates as described above.
as an improvement of the technical scheme, the rotor further comprises a rotating shaft, a shaft hole is formed in the center of the chip, and the rotor chip is installed on the rotating shaft through the shaft hole.
Further, the rotor still includes 16 magnet steel pieces, the rotor chip is installed with the same angle in the pivot, 16 the magnet steel piece is installed respectively in 16 magnet steel grooves that every rotor chip corresponds and run through all rotor chips.
In yet another aspect, an electrical machine comprises a 48-slot stator and a rotor as described above, the stator being rotatably mounted on the outside of the rotor with a radial air gap therebetween.
As an improvement of the technical scheme, the radial air gap is 0.3mm-1 mm.
The utility model has the advantages that: the utility model discloses a form of setting up four magnetic isolation holes of certain size on a certain position outside the V-arrangement magnetic slot pair of rotor chip can effectively improve the magnetic line of force distribution of the rotor that adopts this rotor chip to weaken the tooth's socket effect of motor and reach the purpose of improving torque ripple; moreover, by adopting the rotor chip of the utility model, the structure of the stator chute and the rotor chute is not needed to be arranged in the production process of the motor, so that a certain angle is not needed to be staggered between the overlapped stator chips or the overlapped rotor chips in the production and manufacturing process, the number of the magnetic steel blocks can be reduced, and the time for inserting the magnetic steel blocks is shortened; therefore the utility model discloses not only can improve the torque ripple, also can simplify the production processes of motor simultaneously, reduce the manufacturing cost of motor.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a rotor core plate according to the present invention;
Fig. 2 is a schematic view of a mounting structure between the rotor chip and the stator according to the present invention;
Fig. 3 is a graph comparing torque magnitude curves of the motor at different mechanical angles of rotor positions before and after the rotor core plate separates the magnetic hole groups.
Detailed Description
The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the description of the upper, lower, left, right, front, rear, etc. used in the present invention is only relative to the mutual position relationship of the components of the present invention in the drawings.
Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.
Referring to fig. 1 and 2, the motor of the present invention comprises a stator 2 with 48-slot structure and a rotor, wherein the stator 2 can rotateThe rotor is arranged on the outer side of the rotor, the rotor comprises a plurality of rotor chips and a rotating shaft (not shown in the attached drawing), the rotor chips comprise disc-shaped chips 1, the center of each chip 1 is provided with a shaft hole 14, the rotor chips 1 are installed on the rotating shaft through the shaft hole 14, 16 magnetic steel grooves 11 are arranged on the chip 1, every two adjacent magnetic steel grooves 11 form 1 group of magnetic groove pairs, 2 magnetic steel grooves 11 in each group of magnetic groove pairs are arranged in a V shape, the opening direction of the magnetic steel grooves faces the outer side of the chip 1, 8 groups of magnetic groove pairs are symmetrically distributed around the center of the chip 1, two magnetic steel grooves 11 in the same group of magnetic groove pairs are symmetrically arranged about a certain straight line n passing through the center of the chip 1, the V-shaped opening side of the chip 1 in each group is provided with a group of magnetic isolation hole groups, each magnetic isolation hole group comprises two first magnetic isolation holes 12 and two second magnetic isolation holes 13 symmetrically arranged about the straight line n, the second magnetism isolating holes 13 are positioned at two sides of the first magnetism isolating hole 12; the included angle formed by connecting lines between the centers of two first magnetism isolating holes 12 in the same group and the center of the chip 1 is A, the angle of A is twice the groove angle of the stator 2, the groove angle of the stator 2 with a 48-groove structure is 360 DEG/48 ═ 7.5 DEG, so the angle of A is 15 DEG, the included angle formed by connecting lines between the centers of the first magnetism isolating holes 12 in the same group and the centers of the adjacent second magnetism isolating holes 13 and the center of the chip 1 is B, and the angle of B is 7.5 DEG; the distance between a straight line m passing through the center of the first magnetism isolating hole 12 and the center of the chip 1 and two intersection points between the outer contour of the chip 1 and the outer edge of the magnetic steel groove 11 is E, and the diameter d1 of the first magnetism isolating hole 12 isAnd the minimum distance G from the center of the first magnetism isolating hole 12 to the outer contour of the chip 1 isThe distance between a straight line y passing through the center of the second magnetism isolating hole 13 and the center of the chip 1 and two intersection points between the outer contour of the chip 1 and the outer edge of the magnetic steel groove 11 is F, and the diameter d2 of the second magnetism isolating hole 13 is equal toAnd the minimum distance H from the center of the second magnetism isolating hole 13 to the outer contour of the chip 1 isAnd, considering manufacturing errors existing in an actual manufacturing process, the tolerance range fluctuation of ± 0.5 ° of the included angle a and the included angle B is allowed, the tolerance range fluctuation of ± 0.5mm of the d1, d2, G, H is allowed, and the effect is better as A, B, d1, d2, G, H are closer to the above values. The rotor still including 16 magnet steel pieces (not shown in the attached drawing), the rotor chip is installed with the same angle in the pivot, 16 the magnet steel piece is installed respectively in 16 magnet steel grooves 11 that every rotor chip corresponds and is run through all rotor chips.
the utility model discloses through set up the form of above-mentioned magnetism isolating hole group on the rotor chip, can effectively improve the magnetic line of force distribution of the rotor that adopts this rotor chip to weaken the tooth's socket effect of motor and reach the purpose of improving the torque ripple; fig. 3 is a graph comparing torque magnitudes of the motor at different mechanical angles before and after the rotor chip is provided with the magnetic isolation hole group, and it can be seen from data in the graph that torque fluctuation before hole opening is about 22%, and torque fluctuation after hole opening is about 10%, so that torque fluctuation of the motor is greatly reduced.
In addition, because the utility model adopts the form of opening the magnetic isolation hole group to improve the torque fluctuation, the motor of the utility model does not need to be provided with a stator chute or a rotor chute, and therefore, certain angle staggering between stator chips or rotor chips is not needed in the production and manufacturing process; meanwhile, compared with the form of a rotor chute, the rotor or the motor of the utility model can also reduce the number of the magnetic steel blocks, and only the magnetic steel blocks which meet the number of the magnetic steel slots 11 on a single rotor chip are needed, so that the time for inserting the magnetic steel blocks can be effectively reduced; therefore, the utility model discloses not only can improve the torque ripple, also can simplify the production processes of motor simultaneously, reduce the manufacturing cost of motor.
In this embodiment, for convenience of processing, it is preferable that the magnetism isolating holes on the rotor chip are formed at one time by a punching process together with the rotor chip.
In this embodiment, in order to reduce the weight of the rotor, the core plate 1 is provided with a plurality of lightening slots 15 and lightening holes 16, specifically, the lightening slots 15 and lightening holes 16 are symmetrically distributed around the center of the core plate 1, and the lightening slots 15 and lightening holes 16 are located between the shaft hole 14 and the magnetic steel slot 11.
In the present embodiment, a radial air gap exists between the stator 2 and the rotor. And, in particular, said radial air gap is comprised between 0.3mm and 1mm, preferably 0.5 mm.
The above is only the preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should fall into the protection scope of the present invention as long as it is reached by any of the same or similar means.
Claims (9)
1. The utility model provides a rotor chip, including chip (1) of disc, be equipped with 16 magnetic steel grooves (11) on chip (1), every two are adjacent magnetic steel groove (11) constitute 1 group's magnetic slot pair, every group 2 magnetic steel grooves (11) in the magnetic slot pair adopt V-arrangement and opening direction towards the outside of chip (1), 8 magnetic slots of group are to the central symmetric distribution who encircles chip (1), and two magnetic steel grooves (11) that same group's magnetic slot is internal all set up its characterized in that about a certain straight line n symmetry that crosses chip (1) center: the chip (1) is provided with a group of magnetic isolation hole groups on the V-shaped opening side of each group of magnetic slot pairs, each magnetic isolation hole group comprises two first magnetic isolation holes (12) and two second magnetic isolation holes (13) which are symmetrically arranged relative to a straight line n, and the second magnetic isolation holes (13) are positioned on two sides of the first magnetic isolation holes (12); the included angle formed by connecting lines between the centers of two first magnetism isolating holes (12) in the same group and the center of the chip (1) is A, the angle of A is 15 degrees +/-0.5 degrees, the included angle formed by connecting the centers of the first magnetism isolating holes (12) in the same group and the center of the second magnetism isolating hole (13) adjacent to the centers of the first magnetism isolating holes and the center of the chip (1) is B, and the angle of B is 7.5 degrees +/-0.5 degrees; passing through the center of the first magnetism isolating hole (12) and the chip(1) The distance between a straight line m at the center and two intersection points between the outer contour of the chip (1) and the outer edge of the magnetic steel groove (11) is E, and the diameter d1 of the first magnetism isolating hole (12) is withinAnd the minimum distance G from the center of the first magnetism isolating hole (12) to the outer contour of the chip (1) isTo (c) to (d); the distance between a straight line y passing through the center of the second magnetism isolating hole (13) and the center of the chip (1) and two intersection points between the outer contour of the chip (1) and the outer edge of the magnetic steel groove (11) is F, and the diameter d2 of the second magnetism isolating hole (13) is within the rangeAnd the minimum distance H from the center of the second magnetism isolating hole (13) to the outer contour of the chip (1) isIn the meantime.
2. A rotor chip according to claim 1, wherein: the center of the chip (1) is provided with a shaft hole (14).
3. A rotor chip according to claim 2, wherein: the chip (1) is provided with a plurality of lightening slots (15) and/or lightening holes (16), and the lightening slots (15) and/or the lightening holes (16) are symmetrically distributed around the center of the chip (1).
4. A rotor chip according to claim 3, wherein: the weight-reducing slots (15) and/or the weight-reducing holes (16) are positioned between the shaft hole (14) and the magnetic steel slots (11).
5. a rotor, characterized by: comprising a plurality of rotor chips according to claim 1.
6. The rotor of claim 5, wherein: the rotor chip is characterized by further comprising a rotating shaft, a shaft hole (14) is formed in the center of the chip (1), and the rotor chip is installed on the rotating shaft through the shaft hole (14).
7. The rotor of claim 6, wherein: the rotor core plate is characterized by further comprising 16 magnetic steel blocks, the rotor core plates are arranged on the rotating shaft at the same angle, and the 16 magnetic steel blocks are respectively arranged in 16 magnetic steel grooves (11) corresponding to each rotor core plate and penetrate through all the rotor core plates.
8. An electric machine comprising a 48-slot stator (2), characterized in that: the rotor of any of claims 5 to 7 is further included, and the stator (2) is rotatably sleeved on the outer side of the rotor and has a radial air gap with the rotor.
9. An electric machine as claimed in claim 8, characterized in that: the radial air gap is 0.3mm-1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920572893.5U CN209805525U (en) | 2019-04-24 | 2019-04-24 | Rotor chip, rotor thereof and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920572893.5U CN209805525U (en) | 2019-04-24 | 2019-04-24 | Rotor chip, rotor thereof and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209805525U true CN209805525U (en) | 2019-12-17 |
Family
ID=68830959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920572893.5U Active CN209805525U (en) | 2019-04-24 | 2019-04-24 | Rotor chip, rotor thereof and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209805525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022016A (en) * | 2019-04-24 | 2019-07-16 | 广东金霸智能科技股份有限公司 | A kind of rotor chip and its rotor and motor |
-
2019
- 2019-04-24 CN CN201920572893.5U patent/CN209805525U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022016A (en) * | 2019-04-24 | 2019-07-16 | 广东金霸智能科技股份有限公司 | A kind of rotor chip and its rotor and motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102130521B (en) | Rotating electrical machine and manufacturing method of a stator thereof | |
| KR100690682B1 (en) | Rotor for flux barrier type synchronous reluctance motor | |
| US9397541B2 (en) | Stator for electric rotating machine and method of manufacturing the same | |
| US10128726B2 (en) | Method for manufacturing a laminate and method for manufacturing a rotor | |
| US20070247015A1 (en) | Rotor having lobed bore and method of assembling same | |
| CN210404878U (en) | Oblique-pole rotor of motor | |
| EP3093963A1 (en) | Segmented laminated core and method for manufacturing the same | |
| CN202068291U (en) | Skewed pole rotor used for synchronous motor | |
| CN101621221A (en) | Electrical motor and method for manufacturing the same | |
| CN106104970A (en) | There is the reluctance rotor lamination of depressed part for reducing stress | |
| CN103378701A (en) | Rotor for a motor and a motor | |
| US9343937B2 (en) | Rotary electric machine equipped with rotor core of step skew structure | |
| CN110022016A (en) | A kind of rotor chip and its rotor and motor | |
| CN209805525U (en) | Rotor chip, rotor thereof and motor | |
| CN113224877A (en) | Rotor of rotating electric machine and method for manufacturing arc magnet | |
| CN102983685A (en) | Manufacturing method of rotating electric machine and rotating electric machine | |
| JP2021052574A (en) | Stator, motor, and manufacturing method of stator | |
| CN102916512A (en) | Oblique pole rotor structure of permanent magnet synchronous motor | |
| CN101527476A (en) | Brushless electric motor rotor | |
| CN103036334A (en) | Permanent magnet rotor for a rotary electric machine | |
| CN102694430A (en) | Silicon steel sheet for motor rotor, motor rotor body and motor rotor | |
| CN205265380U (en) | Stator core and water pump | |
| CN210744860U (en) | Layered oblique pole structure of inner rotor of permanent magnet motor | |
| CN215071849U (en) | New energy automobile motor rotor punching | |
| CN114421669A (en) | Rotor magnetic steel sheet, rotor oblique pole unit and oblique pole type rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |