CN200959542Y - Generator rotor for vehicle - Google Patents
Generator rotor for vehicle Download PDFInfo
- Publication number
- CN200959542Y CN200959542Y CN 200620117666 CN200620117666U CN200959542Y CN 200959542 Y CN200959542 Y CN 200959542Y CN 200620117666 CN200620117666 CN 200620117666 CN 200620117666 U CN200620117666 U CN 200620117666U CN 200959542 Y CN200959542 Y CN 200959542Y
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- rotor
- rotor core
- shaped permanent
- strip
- permanent
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a rotor for car-used dynamotor, comprising a shaft, a rotor core and magnetic poles, which is characterized in that: the magnetic poles are even streaky permanent magnetic monomers made by Nd-Fe-B rare earth material; the rotor core is round with a through hole in middle, the shaft is fastened in the through hole; the permanent magnetic monomers are uniformly arranged on the external circumference of the rotor core and fastened on the rotor core by sink-screws 7 forming a ring, the surface magnetic poles of adjacent two permanent magnetic monomers are contrary. Comparing with the conventional excitation motor rotor, the utility model leaves out the slip ring, the carbon brush and the excitation winding, the heat loss caused by the mechanical friction is reduced; when the rotor relatively moves with the same stator winding in the same rotating speed, greater induction electric energy can be obtained; meanwhile, because the use of the Nd-Fe-B rare earth material instead of excitation winding, the production process is simplified and the volume of the rotor is reduced.
Description
Technical field
The utility model belongs to technical field of motors, and specifically, the utility model relates to a kind of rotor that is used for alternator for vehicle.
Background technology
The operation principle of generator is based on Faradic electricity magnetic induction experimental phenomena, its basic contents is: in a basic field system with the N utmost point and S utmost point, lead (coil) produces induced current along the athletic meeting of magnetic line of force cross-wise direction, induced electromotive force neglect greatly lead (coil) in the unit interval in the inswept area variation rate of magnetic flux and decide.
Alternator for vehicle is mainly used in motor vehicles and stationary power such as automobile, tractor, engineering machinery, as the power supply of charging power supply.Since the sixties, automobile in the world generally uses excitation generator.But high standard requirement along with Hyundai Motor, automobile electrical every year is with the speed increment of 2-3 ampere, traditional excitation generator more and more can not satisfy the specification requirement of automobile electrical " high output " and " miniaturization, lightweight ", and the permanent magnet generator of market in urgent need a new generation emerges early.
In the prior art, conventional automobile-used excitation-type generator configurations mainly comprises rotor, stator, rectifier, front end housing and rear end cap etc.
The rotor of prior art comprises magnetic pole, excitation winding, slip ring and axle.Excitation winding is housed on the rotor magnetic pole, provides direct current by carbon brush → slip ring → excitation winding and on magnetic pole, generate an electromagnetic field (being excitation field) by external power source (as the storage battery on the automobile).
Figure 2 shows that 2p=4, the conventional excitation generator diagrammatic side views of z=36 (wherein p is the number of pole-pairs of generator, P is promptly arranged to magnetic pole, and z is the number of teeth of stator).In Fig. 1, stator 2 is fixed in the support rear end cap 1, and each stator iron core tooth 2II forms between two adjacent winding slot 2I; The excitation winding 3I that is made of enamelled wire is wrapped on each magnetic pole 3II of the rotor of being made by common magnetic material 3, power supply is provided for excitation winding 3I by external dc power through slip ring, make rotor 3 produce magnetic field, two adjacent magnetic pole 3II magnetic opposite (being the N utmost point and the S utmost point); The rotating shaft of rotor 3 is supported in the support rear end cap 1 for 6 quarters rotatably, and is concentric with stator 2, and the tooth 2II of stator 2 is in the face of the magnetic pole 3II of rotor 3.When rotating shaft 6 rotations form displacement, the also corresponding change in position between the tooth 2II of stator core 2 and the permanent magnetic monomers of rotor 3.
The rectifier of the alternating current machine of excitation-type is that the magnetic flux of regulating rotor is realized, so must load onto slip ring on the rotor of the alternating current machine of excitation-type, and the sliding contact by carbon brush could realize the connection of rotor circuit and external power as transition.So because the on-stream meeting of carbon brush is worn and torn gradually, the variation of spring pressure or install bad reliability that can influence contact has increased and has safeguarded and the workload of maintenance.In addition, the AC motor rotor excitation of excitation-type need be from externally fed, therefore do not having under the situation of external power source, motor can't generate electricity, and excitation winding itself is inevitably wanted loss of energy simultaneously, thereby has reduced efficiency of motor, when on automobile, using, the electric current that needs storage battery to provide drives excitation winding and produces magnetic field, has so just taken the portion of energy of storage battery, and will shorten the life-span of storage battery.Under the environment of high temperature and strong motion, the demagnetization imagination appears in excitation winding easily.Because winding insulation makes moist, is heated, wears out and the repeated stock of mechanical stress and electromagnetic force, usually causes the damage of winding.In electrical fault, the excitation winding fault accounts for more than 60%.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of rotor that does not need the employing rare earth permanent-magnetic material making of excitation winding and slip ring is provided.
For achieving the above object, the rotor that is used for alternator for vehicle that the utility model provides comprises: rotating shaft, rotor core and magnetic pole is characterized in that described magnetic pole is a plurality of strip-shaped permanent-magnet monomer of NdFeB rear-earth material; Described rotor core is circular, and the centre has through hole, and rotating shaft is fastened in the through hole; 2P described strip-shaped permanent-magnet monomer is evenly arranged on the excircle of rotor core, and is fastened on sunk screw 7 and forms ring-type on the rotor core, and two adjacent permanent magnetic monomers upper surface magnetic poles are opposite, and wherein, P is an even number.
In the technique scheme, the cross section of described permanent magnetic monomers can be selected tile shape, trapezoidal, fan-shaped, rectangle, semicircle or other arbitrary shape for use.
In the technique scheme, described permanent magnetic material monomer and iron core be connected the one side width be: 5～80mm.
In the technique scheme, described permanent magnetic material monomer and iron core be connected the one side spacing τ be: the rotor core girth is divided by the permanent magnetic monomers number, (promptly
)
In the technique scheme, the experience that described strip-shaped permanent-magnet monomer width S is generally selected for use is referenced as: 5～80mm, thickness H are then relevant with the rated power W that relates to motor, generally select for use experience to be referenced as: when W≤5kw, thickness is 1～8mm, and when 5kw＜W≤50kw, thickness is: 6～15mm.
In the technique scheme, described strip-shaped permanent-magnet monomer length L is identical with the thickness of rotor core, rotor thickness is relevant with generator designs power, and the experience of generally selecting for use is referenced as: when W≤2kw, L is 20～30mm, when 2kw≤W≤4kw, L is 30～45mm, and when 4kw≤W≤6kw, L is 45～60mm, when 6kw≤W≤30kw, L is 60～150mm.
The rotor of the employing rare earth permanent-magnetic material that the utility model provides is compared with conventional excitation electromotor rotor, can save slip ring, carbon brush and excitation winding, has reduced the thermal losses that mechanical friction causes; The surface magnetic flux of Nd-Fe-B permanent magnetic monomer reaches more than 5500 Gausses than the magnetic field high 50% that the conventional generator excitation winding produces, therefore with identical stator winding during with the same rotational speed relative motion, can obtain bigger induced electricity energy, simultaneously, owing to adopted Nd-Fe-B rare earth permanent magnetic material to replace excitation winding, its manufacture craft has been simplified, and has omitted the volume that excitation winding takies, and makes volume of the present utility model little by 20% than the conventional power generation usage machine rotor.
Description of drawings
Fig. 1 is conventional excitation generator diagrammatic side views
Fig. 2 a is that the rotor structure master of an embodiment of the utility model looks generalized section
Fig. 2 b is the rotor structure schematic side view of an embodiment of the utility model
Fig. 3 a is that the rotor structure master of another embodiment of the utility model looks generalized section
Fig. 3 b is the rotor structure schematic side view of another embodiment of the utility model
Fig. 4 a is that the rotor structure master of another embodiment of the utility model looks generalized section
Fig. 4 b is the rotor structure schematic side view of another embodiment of the utility model
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done to describe further.
Embodiment 1:
In the present embodiment, design power is the generator amature of 1000w, and strip-shaped permanent-magnet monomer 5, the rotating shaft 6 of 45# steel work and the rotor core 4 that aluminum alloy materials is made made by 12 Nd-Fe-B rare earth permanent magnetic materials constitute.Described rotor core and the hot fastening of commentaries on classics axle oil are installed, and are about to rotor core and put into the high temperature oil heating, make its middle through hole expansion, and diameter increases, and rotating shaft is filled in the through hole again, takes out natural cooling in air then.12 strip-shaped permanent-magnet monomer are evenly arranged on the excircle of rotor core, and are fastened on sunk screw 7 and form ring-type on the rotor core, and the radius of rotor core is 40mm, and the spacing τ of permanent magnetic monomers is:
Two adjacent permanent magnet upper surface magnetic poles are opposite, the groove relative with tooth (shown in Fig. 2 a, Fig. 2 b) of N, the S utmost point and stator core.
Nd-Fe-B rare earth permanent magnetic material is a kind of high performance permanent magnetic materials.At room temperature residual magnetic flux density can be up to 1.3T, and the magnetic induction coercive force can reach 980kA/m, and maximum magnetic energy product is up to 390kJ/m
3
Shown in Fig. 2 b, in the present embodiment, the cross section 8 of NdFeB rear-earth strip-shaped permanent-magnet monomer (promptly vertical with shaft axis parting face) is a tile shape, be referenced as with the be connected experience generally selected for use of width S of one side of iron core: 5～80mm, present embodiment is selected 16mm for use, be about 1: 16 ratio with the ratio of the girth of designed generator amature, thickness H is then relevant with the rated power W that relates to motor, generally select for use experience to be referenced as: when W≤5kw, thickness H is 1～8mm, present embodiment H selects the thickness of 4mm for use, and length is identical with the thickness of rotor core, and present embodiment is selected 23mm for use.
In the present embodiment, design power is the generator amature of 3000w, and strip-shaped permanent-magnet monomer 5, the rotating shaft 6 of 45# steel work and the rotor core 4 that aluminum alloy materials is made made by 16 Nd-Fe-B rare earth permanent magnetic materials constitute.Described rotor core and the hot fastening of commentaries on classics axle oil are installed, and are about to rotor core and put into the high temperature oil heating, make its middle through hole expansion, and diameter increases, and rotating shaft is filled in the through hole again, takes out natural cooling in air then.16 strip-shaped permanent-magnet monomer are evenly arranged on the excircle of rotor core, and are fastened on sunk screw 7 and form ring-type on the rotor core, and the radius of rotor core is 47.5mm, and the spacing τ of permanent magnetic monomers is:
Two adjacent permanent magnet upper surface magnetic poles are opposite, the groove relative with tooth (shown in Fig. 3 a, Fig. 3 b) of N, the S utmost point and stator core.
Described Nd-Fe-B rare earth permanent magnetic material is identical with embodiment 1;
The cross section of described NdFeB rear-earth strip-shaped permanent-magnet monomer is trapezoidal, be referenced as with the be connected experience generally selected for use of width S of one side of iron core: 5～80mm, present embodiment is selected 13mm for use, be about 1: 7.3 ratio with the ratio of the diameter of designed generator amature, thickness H is then relevant with the rated power W that relates to motor, generally select for use experience to be referenced as: when W≤5kw, thickness H is 1～8mm, present embodiment H selects the thickness of 6mm for use, permanent magnetic monomers dual-side angle is: 28 °, then be 10mm with the iron core parallel upper surface width of one side that is connected, length is identical with the thickness of rotor core, and present embodiment is selected 41mm for use.
Embodiment 3:
In the present embodiment, design power is the generator amature of 5000w, and strip-shaped permanent-magnet monomer 5, the rotating shaft 6 of 45# steel work and the rotor core 4 that aluminum alloy materials is made made by 16 Nd-Fe-B rare earth permanent magnetic materials constitute.Described rotor core and the hot fastening of commentaries on classics axle oil are installed, and are about to rotor core and put into the high temperature oil heating, make its middle through hole expansion, and diameter increases, and rotating shaft is filled in the through hole again, takes out natural cooling in air then.16 strip-shaped permanent-magnet monomer are evenly arranged on the excircle of rotor core, and are fastened on sunk screw 7 and form ring-type on the rotor core, and the radius of rotor core is 52.5mm, and the spacing τ of permanent magnetic monomers is:
Two adjacent permanent magnet upper surface magnetic poles are opposite, the groove relative with tooth (shown in Fig. 4 a, Fig. 4 b) of N, the S utmost point and stator core.
Described Nd-Fe-B rare earth permanent magnetic material is identical with embodiment 1;
The cross section of described NdFeB rear-earth strip-shaped permanent-magnet monomer is trapezoidal, and two adjacent permanent magnetic monomers are placed on the contrary, (being wide of the A permanent magnetic monomers is connected with rotor core, the leptoprosopy and the rotor core of B permanent magnetic monomers are connected) be referenced as with the be connected experience generally selected for use of width S of one side of iron core: 5～80mm, the cross section that present embodiment is selected for use is that the broadside of trapezoidal permanent magnetic monomers is 20mm, narrow limit is 16mm, be about the ratio of 1: 5 and 1: 6.6 respectively with the ratio broadside of the diameter of designed generator amature and narrow limit, thickness H is then relevant with the rated power W that relates to motor, generally select for use experience to be referenced as: when W≤5kw, thickness H is 1～8mm, present embodiment H selects the thickness of 8mm for use, length is identical with the thickness of rotor core, and present embodiment is selected 52mm for use.
Embodiment 4:
In the present embodiment, the rotor core 4 that rotating shaft 6 that the strip-shaped permanent-magnet monomer 5 that generator amature is made by 18 Nd-Fe-B rare earth permanent magnetic materials, 45# steel are done and aluminum alloy materials are made constitutes.The cross section 8 of strip-shaped permanent-magnet monomer is a tile shape, with iron core be connected the one side width S be 5mm, thickness H is 1mm, length is identical with the thickness of rotor core, present embodiment is selected 20mm for use, all the other are all identical with embodiment 1.In the present embodiment, all the other are all identical with embodiment 1 for the structure of strip-shaped permanent-magnet monomer, rotating shaft, rotor core and annexation.This rotor is used for the generator that power W is 550W.
Embodiment 5:
In the present embodiment, the rotor core 4 that rotating shaft 6 that the strip-shaped permanent-magnet monomer 5 that generator amature is made by 8 Nd-Fe-B rare earth permanent magnetic materials, 45# steel are done and aluminum alloy materials are made constitutes.The cross section 8 of strip-shaped permanent-magnet monomer is a tile shape, with the be connected width S of one side of iron core be 80mm, be about 1: 11 ratio with the ratio of the girth of designed generator amature; Thickness H is 15mm, and length is identical with the thickness of rotor core, and present embodiment is selected 150mm for use.In the present embodiment, all the other are all identical with embodiment 1 for the structure of strip-shaped permanent-magnet monomer, rotating shaft, rotor core and annexation.This rotor is used for the generator that power W is 30KW.
Embodiment 6:
In the present embodiment, the rotor core 4 that rotating shaft 6 that the strip-shaped permanent-magnet monomer 5 that generator amature is made by 8 Nd-Fe-B rare earth permanent magnetic materials, 45# steel are done and aluminum alloy materials are made constitutes.The cross section 8 of strip-shaped permanent-magnet monomer is a tile shape, with the be connected width S of one side of iron core be 80mm, be about 1: 11 ratio with the ratio of the girth of designed generator amature; Thickness H is 6mm, and length is identical with the thickness of rotor core, and present embodiment is selected 120mm for use.In the present embodiment, all the other are all identical with embodiment 1 for the structure of strip-shaped permanent-magnet monomer, rotating shaft, rotor core and annexation.This rotor is used for the generator that power W is 15kw.
In addition, shapes such as fan-shaped, rectangle, semicircle can also be adopted in the cross section of the strip-shaped permanent-magnet monomer in the utility model.
Claims (6)
1, a kind of rotor of alternator for vehicle comprises: rotating shaft (6), rotor core (4) and magnetic pole is characterized in that described magnetic pole is the even number strip-shaped permanent-magnet monomer (5) of NdFeB rear-earth material; Described rotor core (4) is circular, and the centre has through hole, and rotating shaft is fastened in the through hole; Described strip-shaped permanent-magnet monomer (5) is evenly distributed and be fastened on the excircle of rotor core (4), forms ring-type, and the upper surface magnetic pole of adjacent two permanent magnetic monomers (5) is opposite.
By the rotor of the described alternator for vehicle of claim 1, it is characterized in that 2, the cross section of described strip-shaped permanent-magnet monomer (5) is tile shape, trapezoidal, fan-shaped, rectangle or semicircle.
By the rotor of the described alternator for vehicle of claim 1, it is characterized in that 3, the be connected width of one side of described strip-shaped permanent-magnet monomer (5) and iron core is: 5～80mm.
4, by the rotor of the described alternator for vehicle of claim 1, it is characterized in that the thickness of described strip-shaped permanent-magnet monomer (5) is relevant with the rated power W that relates to motor: when W≤5kw, thickness is 1～8mm, and when 5kw＜W≤50kw, thickness is: 6～15mm.
By the rotor of the described alternator for vehicle of claim 3, it is characterized in that 5, described strip-shaped permanent-magnet monomer (5) and iron core are connected the ratio of girth of the width of one side and generator amature in 1: 5 to 1: 16 scope.
6, by the rotor of the described alternator for vehicle of claim 1, it is characterized in that the length of described strip-shaped permanent-magnet monomer (5) is: 20～150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620117666 CN200959542Y (en) | 2006-06-05 | 2006-06-05 | Generator rotor for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620117666 CN200959542Y (en) | 2006-06-05 | 2006-06-05 | Generator rotor for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200959542Y true CN200959542Y (en) | 2007-10-10 |
Family
ID=38786422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620117666 Expired - Fee Related CN200959542Y (en) | 2006-06-05 | 2006-06-05 | Generator rotor for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200959542Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365142A (en) * | 2019-06-20 | 2019-10-22 | 徐州亚泰电机有限公司 | A kind of wound rotor asynchronous motor and manufacturing method |
| CN111193348A (en) * | 2020-01-20 | 2020-05-22 | 深圳市丞辉威世智能科技有限公司 | Drive motor and power output device |
-
2006
- 2006-06-05 CN CN 200620117666 patent/CN200959542Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365142A (en) * | 2019-06-20 | 2019-10-22 | 徐州亚泰电机有限公司 | A kind of wound rotor asynchronous motor and manufacturing method |
| CN111193348A (en) * | 2020-01-20 | 2020-05-22 | 深圳市丞辉威世智能科技有限公司 | Drive motor and power output device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071010 Termination date: 20100605 |