CN201975881U - Motor rotor of electric vehicle - Google Patents
Motor rotor of electric vehicle Download PDFInfo
- Publication number
- CN201975881U CN201975881U CN2011200667816U CN201120066781U CN201975881U CN 201975881 U CN201975881 U CN 201975881U CN 2011200667816 U CN2011200667816 U CN 2011200667816U CN 201120066781 U CN201120066781 U CN 201120066781U CN 201975881 U CN201975881 U CN 201975881U
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- CN
- China
- Prior art keywords
- magnet steel
- electric vehicle
- convex body
- holddown groove
- rotor
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a motor rotor of an electric vehicle, which solves the problems that the magnetic steel block usage quantity is large, and the manufacture cost is high in the existing motor rotor of the electric vehicle. The technical scheme adopted by the utility model is that the motor rotor of the electric vehicle is provided with a plurality magnetic steel blocks, and is characterized in that the rotor is provided with a ring-shaped fixed ring made of a magnetic conducting material, the inner peripheral surface of the fixed ring is provided with a plurality of protruded bodies and fixed slots, the protruded bodies and the fixed ring are made of the same material and are connected into a whole, the fixed slots and the protruded bodies are arranged at intervals, each fixed slot is internally fixed with one magnetic steel block, and the polarity at the same side ends of the magnetic steel blocks is same.
Description
Technical field
The utility model relates to a kind of electric vehicle motor, relates in particular to the rotor in a kind of electric vehicle motor, and this rotor is provided with some magnet steel.
Background technology
Disclose in China's utility model patent (publication number CN201717691U) and pasted formula magnet steel circle between a kind of electric vehicle motor rotor, comprise the magnet steel circle that is installed in the electric vehicle hub, magnet steel circle inwall is installed magnetic links, leave equidistant interval S between described each sheet magnetic links, described magnet steel circle inwall is shaped on the plano-convex platform, the plano-convex platform contacts with magnetic links, and is shaped on the plano-convex platform and leads the glue groove.The sheet number of the described magnetic links of this programme is constant, but the narrowed width of each sheet magnetic links, reserved spacing, according to the motor of different size and power, its spacing also has nothing in common with each other.Had and to have reduced the consumption of magnetic links after the spacing, thereby reduced cost; The active area of magnetic links be can reduce simultaneously, and alternation loss and no-load current between the magnetic links reduced; And after the narrowed width of each sheet magnetic links, the slit between magnetic links and the magnet steel circle diminishes, and makes stickup firm.Magnetic links contacts with magnet steel circle inwall plano-convex platform, and is shaped on the plano-convex platform and leads the glue groove, improves bonding reliability.
The number of the magnet steel of arranging and the epitrochanterian magnet steel number of common electric machine difference are little on this rotor, do not embody the effect that the magnet steel consumption is saved.
Summary of the invention
For overcoming above-mentioned defective, the utility model technical issues that need to address are: a kind of electric vehicle motor is provided, can effectively saves the consumption of magnet steel, reduce the motor manufacturing cost, save rare earth resources.
For achieving the above object, technical solution adopted in the utility model: a kind of electric vehicle motor rotor, rotor is provided with some magnet steel, it is characterized in that described rotor is provided with the annular retainer plate of being made by permeability magnetic material, the retainer plate inner peripheral surface is provided with some convex bodys and holddown groove, convex body and retainer plate are that homogeneous material is connected as a single entity, holddown groove and convex body are provided with at interval, and every holddown groove internal fixation has a described magnet steel, and all magnet steel are all identical with the polarity of side.The manufacturing materials of retainer plate generally is a pure iron, after in magnet steel is fixed on holddown groove, magnetic conduction because of retainer plate, and make that the convex body adjacent with magnet steel also had magnetic, convex body is equivalent to magnet steel, and convex body outer end polarity is opposite with the polarity of side with adjacent magnet steel, forms magnetic loop between magnet steel and the adjacent convex body.All magnet steel are all identical with the polarity of side, this be based on retainer plate radially on consider.Rotor is used to be socketed in the outside of stator, and all magnet steel are referred to as the outer end towards the end of stator, and the end that all magnet steel deviate from stator is referred to as the inner; Correspondingly convex body is referred to as the outer end towards the end of stator.
As preferably, described retainer plate and rotor constitute a monomer.Rotor is made by permeability magnetic material, and is simple in structure, easy to process.
As preferably, the floor space of described holddown groove is 5/4 to 5/3 with the ratio of convex body outer end area.The magnetic of magnet steel is after derive the bottom surface of holddown groove, magnetic can be derived towards two convex bodys adjacent with magnet steel, convex body outer end area is less than the floor space of holddown groove, this helps the conduction of magnetic, make that the magnetic intensity and the magnet steel of convex body outer end are little with the magnetic intensity difference of side, thus the stability can effectively improve machine operation the time.
As preferably, described convex body outer face is a cambered surface, and the magnet steel outer face is the plane.This end face of convex body is a cambered surface, and this cambered surface has magnet accumulating cap on the one hand, and the magnetic resistance when remedying the retainer plate magnetic conduction makes this end face of convex body approaching to the magnetic action of rotor with side to the magnetic action and the magnet steel of rotor, has improved the stability of machine operation; Also make this end face of convex body can adapt to the rotation of rotor on the other hand.
As preferably, the described end face of all convex bodys is in same periphery.This makes convex body can adapt to the rotation of rotor well, is convenient to the end face of convex body is processed.
As preferably, described convex body is " protruding " font, and its little head end is the outer end.This makes and forms the gap between little head end of convex body and the magnet steel, directly forms magnetic flux in order to avoid convex body is held because of both contact the convex body microcephaly with magnet steel, has improved the magnetic action effect of rotor to stator.
As preferably, have between described convex body outer end and the described magnet steel at interval, this is at interval between 0.4 millimeter to 0.6 millimeter.This is configured to described numerical value at interval, can guarantee effectively that enough the action of a magnetic fields to stator, have guaranteed the operating efficiency of motor.
As preferably, the bottom surface of all holddown grooves and same periphery are tangent or in this same periphery.The bottom surface of holddown groove is plane or arc surface, and the position relation between they and the same periphery can be so that after magnet steel was fixed in the holddown groove, the position consistency of all magnet steel on retainer plate be good, makes the magnetic field intensity high conformity that each place of rotor produces.
As preferably, fit in the bottom surface of described magnet steel inner face and holddown groove, is provided with adhesive layer between the side of the side of magnet steel and holddown groove.The bottom surface of described end face of magnet steel and holddown groove fits, and this is convenient to the magnetic conduction of retainer plate, and adhesive layer is arranged on described position, makes the side of magnet steel side and convex body be opened by obstruct, has improved the magnetic conduction efficient of retainer plate.
The beneficial effects of the utility model are:
1, owing to compartment of terrain on the retainer plate of being made by permeability magnetic material is provided with holddown groove and convex body, under the magnetic conduction effect of retainer plate, convex body is equivalent to magnet steel, thereby has also just saved the consumption of magnet steel effectively, help reducing the manufacturing cost of motor, saved valuable rare earth resources.
2, by the structural design to retainer plate, the feasible work requirements that has reduced the motor of magnet steel consumption can guarantee, and is little to the service behaviour influence of motor.
Description of drawings
Fig. 1 is the broken section figure structure schematic representation of the utility model electric vehicle motor rotor, shows that for clear magnet steel among the figure in the holddown groove is not put entirely.
Fig. 2 is the structure for amplifying schematic diagram of convex body.
Embodiment
The utility model electric vehicle motor rotor is a ring-type, and rotor is provided with along its circumferential uniform magnet steel 3.All magnet steel 3 outer end polarity are all identical, and correspondingly the polarity of their inner end is also all identical.
Rotor is provided with the retainer plate 1 of ring-type, and retainer plate 1 is fabricated from iron.Retainer plate 1 is that homogeneous material is connected as a single entity with rotor, and in fact they constitute a monomer spare.
Be provided with some convex bodys 4 and holddown groove 2 on the inner peripheral surface of retainer plate 1, convex body 4 is connected as a single entity for homogeneous material with retainer plate 1.Convex body 4 is radially inwardly outstanding along retainer plate 1, and holddown groove 2 is radially outward recessed along retainer plate 1.Convex body 4 is consistent with the number of holddown groove 2, and they are intervally installed.Described magnet steel 3 is arranged in the holddown groove 2, and magnet steel 3 deviates from an end face of stator and the bottom surface of holddown groove 2 fits, and is provided with adhesive layer between the side of magnet steel 3 sides and holddown groove 2, and adhesive layer makes and is connected firmly between magnet steel 3 and the holddown groove 2.
The bottom surface of holddown groove 2 can arc, also can be the plane.When the bottom surface of holddown groove 2 was cambered surface, the bottom surface of all holddown grooves 2 all was positioned at same periphery, and this periphery is coaxial with retainer plate 1.When the bottom surface of holddown groove 2 was the plane, the bottom surface of all holddown grooves 2 was all tangent with same periphery, and this periphery is coaxial with retainer plate 1.
Magnet steel 3 outer faces are generally the plane, and convex body 4 outer faces are cambered surface, and this end face of all convex bodys 4 all is positioned at same periphery, and this periphery is coaxial with retainer plate 1.
Convex body 4 is " protruding " font, and the little head end of convex body 4 is the outer end of convex body.At convex body 4 microcephaly's end places, have certain interval between convex body 4 and magnet steel 3 sides, this between 0.4 millimeter to 0.6 millimeter, is preferably 0.5 millimeter at interval.Empirical tests, when this was designed to 0.5 millimeter at interval, the magnetic field intensity difference of magnet steel 3 and convex body 4 outer ends was in 6%.And the side of magnet steel 3 fully and the side of holddown groove 2 when fitting, and the magnetic field intensity difference of magnet steel 3 and convex body 4 outer ends is about 20%.
The ratio of the floor space of holddown groove 2 and convex body 4 outer end areas is between 5/4 to 5/3, the ratio of their area is preferably 3/2, the floor space of holddown groove 2 is greater than convex body 4 outer end areas, this has improved the magnetic conduction amount of retainer plate 1, can subdue some influences that because of magnetic resistance the machine operation performance brought in the retainer plate 1 magnetic conduction process.
Claims (9)
1. electric vehicle motor rotor, rotor is provided with some magnet steel, it is characterized in that, described rotor is provided with the annular retainer plate of being made by permeability magnetic material (1), retainer plate (1) inner peripheral surface is provided with some convex bodys (4) and holddown groove (2), and convex body (4) and retainer plate (1) are for homogeneous material is connected as a single entity, and holddown groove (2) and convex body (4) are provided with at interval, every holddown groove (2) internal fixation has a described magnet steel (3), and all magnet steel (3) are all identical with the polarity of side.
2. electric vehicle motor according to claim 1 is characterized in that, described retainer plate (1) and rotor constitute a monomer.
3. electric vehicle motor according to claim 1 is characterized in that, the ratio of the floor space of described holddown groove (2) and convex body (4) outer end area is 5/4 to 5/3.
4. according to claim 1,2 or 3 described electric vehicle motors, it is characterized in that described convex body (4) outer face is a cambered surface, the outer face of magnet steel (3) is the plane.
5. electric vehicle motor according to claim 4 is characterized in that, the described end face of all convex bodys (4) is in same periphery.
6. according to claim 1,2 or 3 described electric vehicle motors, it is characterized in that described convex body (4) is " protruding " font, its little head end is the outer end.
7. electric vehicle motor according to claim 6 is characterized in that, has between the end, outer end of described convex body (4) and the described magnet steel (3) at interval, and this is at interval between 0.4 millimeter to 0.6 millimeter.
8. electric vehicle motor according to claim 1 is characterized in that, bottom surface of all holddown grooves (2) and same periphery are tangent or in this same periphery.
9. electric vehicle motor according to claim 8 is characterized in that, fits in the bottom surface of the inner face of described magnet steel (3) and holddown groove (2), is provided with adhesive layer between the side of the side of magnet steel (3) and holddown groove (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200667816U CN201975881U (en) | 2011-03-15 | 2011-03-15 | Motor rotor of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200667816U CN201975881U (en) | 2011-03-15 | 2011-03-15 | Motor rotor of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975881U true CN201975881U (en) | 2011-09-14 |
Family
ID=44580978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200667816U Expired - Fee Related CN201975881U (en) | 2011-03-15 | 2011-03-15 | Motor rotor of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975881U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946160A (en) * | 2012-12-05 | 2013-02-27 | 信质电机股份有限公司 | Magnetic steel ring structure for motor rotor of electrombile |
| CN106329767A (en) * | 2015-06-16 | 2017-01-11 | 天津美派电动科技有限公司 | Novel environmental protection electric vehicle motor |
-
2011
- 2011-03-15 CN CN2011200667816U patent/CN201975881U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946160A (en) * | 2012-12-05 | 2013-02-27 | 信质电机股份有限公司 | Magnetic steel ring structure for motor rotor of electrombile |
| CN106329767A (en) * | 2015-06-16 | 2017-01-11 | 天津美派电动科技有限公司 | Novel environmental protection electric vehicle motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20150315 |
|
| EXPY | Termination of patent right or utility model |