CN101951106A - Ultrathin high-power direct current magnetoelectric motor - Google Patents
Ultrathin high-power direct current magnetoelectric motor Download PDFInfo
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- CN101951106A CN101951106A CN 201010247971 CN201010247971A CN101951106A CN 101951106 A CN101951106 A CN 101951106A CN 201010247971 CN201010247971 CN 201010247971 CN 201010247971 A CN201010247971 A CN 201010247971A CN 101951106 A CN101951106 A CN 101951106A
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Abstract
The invention discloses an ultrathin high-power direct current magnetoelectric motor, comprising a transmission shaft, a discal stator component sleeved at the middle section of the transmission shaft, discal rotor components which are respectively arranged at the two sides of the stator component and rotate with the transmission shaft, and an upper end cap and a lower end cap which are respectively arranged at the two sides of the rotor components. The stator component comprises a discal stator frame, a plurality of fan-shaped grooves which are arranged on the stator frame in a ring form, fan-shaped windings arranged in the fan-shaped grooves, and inner clamping rings and outer clamping ring for fixing the fan-shaped windings. The rotor component comprises a rotor plate fixedly connected with the transmission shaft, fan-shaped grooves which are arranged on the rotor plate in a ring form, and permanent magnets fixed in the grooves. The surface of the rotor plate, which provided with the permanent magnets, faces the fan-shaped windings. The motor of the invention has the advantages of higher efficiency and energy saving, and the manufacturing, the assembling and the maintenance of the stator winding are more simple, convenient and reliable.
Description
Technical field
The present invention relates to direct current machine, especially relate to a kind of ultra-thin powerful direct current permanent magnet motor.
Background technology
Ultra-thin electric machine is a disc type electric machine, and the characteristics of this type of motor are: volume is little, in light weight, compact conformation, thinner, is dish formula motor again.Disc type electric machine is generally the structure of two rotor folder a slice stators.The structure of stator has two kinds, and a kind of is metal structure, and a kind of is no core structure (injection moulding or form structure).Metal structure generally is pressed into dish with the restriction radial flux by silicon steel sheet volume, and winding is fixed on the silicon steel sheet or in the groove.This structure, in motor operation course, two rotors produce powerful alternating magnetic field vertically, metallic conductor can form very big short circuit current (being commonly called as " eddy current ") in inside, rotor is produced magnetic resistance and stator iron loss, cause the stator heating, make motor power consumption increase greatly; No core structure is owing to no iron core, and the power of motor can only be done very for a short time.Injection moulding or form generally are that the coil that coiling is good is placed in the mould, and injection moulding or perfusion are integral the technology of moulding, and the stator field air gap that adopts this technology to make is bigger, and the magnetic field power density utilance is low, so general Energy Efficiency Ratio is also lower.This kind moulding process is unreasonable in addition, the operating cost height, and production efficiency is extremely low, and maintenanceability is poor, and when the coil in the motor had one group to damage, whole motor stator must be scrapped.Such as: adopt the epoxy resin pouring and forming process, a mould once goes out a product, and heating-up temperature is about 100 ℃～160 ℃, and the shaping and drying time is 8～10 hours, and production efficiency is extremely low.
Summary of the invention
The objective of the invention is that existing disc type electric machine stator winding moulding process is unreasonable in order to solve, iron-core less motor power can not be done greatly, break through the limitation that existing coreless disc type power of motor can only be done very for a short time, provide a kind of more efficient, energy-conservation, ultra-thin more simply and easily high power DC magneto is made, assembles, keeped in repair to stator winding.
For solving the problems of the technologies described above, the ultra-thin high power DC magneto that the present invention proposes, is located at the upper and lower end cap on the power transmission shaft of being placed in of these rotor part both sides respectively at the disc-like rotor parts that together rotate with described power transmission shaft that it comprises power transmission shaft, be placed in the stator component of the plate-like in this power transmission shaft stage casing, be located at these stator component both sides respectively.Stator component comprises: the stator frame of plate-like, annular be located at a plurality of fan grooves on this stator frame, be located at fan-shaped winding in this fan groove, fix the inside and outside trim ring of this fan-shaped winding.Rotor part comprises: the rotor disk of fixedlying connected with power transmission shaft, be located at annular groove on this rotor disk, be fixed in the permanent magnet in this groove, the surface of rotor disk that is provided with permanent magnet is towards described fan-shaped winding.
More excellent, the inner ring of described stator frame can be fixedlyed connected with the outer ring of pair of bearings, and this tightly is enclosed within the stage casing of described power transmission shaft to the inner ring of bearing.
More excellent, can also between the outer ring of the inner ring of stator frame and pair of bearings, be provided with a bearing pedestal, promptly the inner ring of stator frame is connected with this bearing pedestal cylindrical, and this is located in the endoporus of this bearing pedestal bearing.
Wherein, described fan groove is a groove, and the external arc of this fan groove and interior circular arc respectively are provided with a retaining muscle that is used to hold fan-shaped winding.
End play along described power transmission shaft between described fan-shaped winding and the permanent magnet is 0.1～0.8mm.Perhaps bigger, specifically decide on designing requirement.
The another kind of scheme that the present invention proposes: the ultra-thin high power DC magneto that a kind of power transmission shaft does not change, it comprises power transmission shaft, be fixedly connected on the stator component of the plate-like in this power transmission shaft stage casing, be located at the disc-like rotor parts of these stator component both sides respectively; Stator component comprises: the stator frame of the plate-like of fixedlying connected with described power transmission shaft, annular be located at a plurality of fan grooves on this stator frame, be located at fan-shaped winding in this fan groove, fix the inside and outside trim ring of this fan-shaped winding.Rotor part comprises: rotor disk, the annular that is connected with described power transmission shaft by a rolling bearing is located at groove on this rotor disk, is fixed in the permanent magnet in this groove, and the surface of rotor disk that is provided with permanent magnet is towards described fan-shaped winding.
Stator of the present invention adopts no core structure, and the stator that solves existing product fully is subjected to axial action of alternating magnetic field, produces the problem of the iron loss of eddy-current heating and stator itself, makes efficiency of motor higher.Be located at the fan-shaped winding in the stator frame groove, can by flat conductor, round conductor or other lead one coiling forms or the multilayer stack combinations forms.Compare round conductor, the winding that adopts flat enamelled wire to make, the lead of winding is shorter, and resistance is littler, and copper loss is littler, and efficiency of motor is higher.Adopt the thread fan-shaped winding of flat enamel-cover, it is together multilaminate coiled to realize that lead does not have the gap, makes the space of winding obtain 100% utilization, and the winding space of stator is also rationally utilized.Winding adopts the method that is realized the multilayer stack combinations by single layer winding simultaneously, makes the power of motor to do more, and breaks through the limitation that existing coreless disc type power of motor can only be done very for a short time.If under the situation of power of motor unanimity, the volume of motor of the present invention can do forr a short time, thinner.Stator winding moulding process provided by the invention is more reasonable, and assembling, maintenance are simpler, reliable, and production efficiency is higher, solves the existing irrational problem of stator winding moulding process fully.The present invention simultaneously also is applicable to the structure of many rotors and multiple stators.And advantages such as volume is little because motor of the present invention possesses, compact conformation, efficient height, power is big, the assembling maintenance is simpler and easy, reliable are specially adapted to new energy fields such as wind power generation, electric motor car.
Description of drawings
Below in conjunction with drawings and Examples the present invention is described in further detail, wherein:
Fig. 1 is the explosive view of preferred embodiment of the present invention;
Fig. 2 be preferred embodiment of the present invention profile;
Fig. 3 be another embodiment of the present invention profile;
Fig. 4 is the schematic diagram of the good flat enamelled wire single layer winding of coiling;
Fig. 5 is the schematic diagram of the flat enamelled wire winding of stack;
Fig. 6 is that winding is placed on the schematic diagram on the stator frame;
To be inside and outside trim ring be pressed on schematic diagram on the stator frame with winding to Fig. 7.
Embodiment
As shown in Figure 1 and Figure 2, basic structure for preferred embodiment of the present invention, this ultra-thin high power DC magneto, comprise power transmission shaft 8, be placed in the stator component of the plate-like in these power transmission shaft 8 stage casings, be located at the disc-like rotor parts that can together rotate with power transmission shaft 8 of these upper and lower both sides of stator component respectively, respectively with the upper end cover 11 and the bottom end cover 5 of this stator component and rotor part encapsulation, and upper end cover 11 is connected with power transmission shaft 8 by a rolling bearing 7 separately with bottom end cover 5.Wherein, stator component comprises: discoid stator frame 1, annular is located at nine fan grooves 16 on this stator frame 1 (quantity of fan groove can also be selected as required, as long as evenly distributed), be located at this fan groove 16 interior fan-shaped winding 2, the interior trim ring 10 of fixing this fan-shaped winding 2 and outer trim ring 12.Rotor part comprises: the round rotor dish 4 of fixedlying connected with power transmission shaft 8, rib 14, the annular of radially being located at rotor disk 4 outer surfaces are located at groove on this rotor disk 4, are fixed in the permanent magnet 3 in this groove, are provided with the fan-shaped winding 2 of surface in stator of the rotor disk 4 of permanent magnet 3.In the present embodiment, the inner ring of stator frame 1 is connected by the outward flange of bolt with a bearing pedestal 6, has pair of bearings 9 to be located in the endoporus of this bearing pedestal 6, and this inner ring to bearing 9 tightly is enclosed within on the stage casing of power transmission shaft 8.Also can not want bearing pedestal 6, the inner ring of stator frame 1 is directly fixedlyed connected with this outer ring to bearing 9, and this tightly is enclosed within the stage casing of power transmission shaft 8 to the inner ring of bearing 9.
The present invention can also be designed to the ultra-thin high power DC magneto that a kind of power transmission shaft 8 does not rotate, as shown in Figure 3, it comprises power transmission shaft 8, is fixedly connected on the stator component of the plate-like in these power transmission shaft 8 stage casings, is located at the disc-like rotor parts of these stator component both sides respectively; Stator component comprises: the discoid stator frame 1 of fixedlying connected with power transmission shaft 8, annular are located at a plurality of fan grooves on this stator frame 1, are located at fan-shaped winding 2, the interior trim ring 10 of fixing this fan-shaped winding 2 and outer trim ring 12 in this fan groove.Rotor part comprises: round rotor dish 4, the annular that is connected with power transmission shaft 8 by a rolling bearing 15 is located at groove on this rotor disk 4, is fixed in the permanent magnet 3 in this groove, is provided with the fan-shaped winding 2 of surface in stator of the rotor disk 4 of permanent magnet 3.The motor of this kind structure is not provided with upper and lower end cap, and power transmission shaft 8 does not rotate during work, but passes through the rotation outputting power of rotor disk 4.
As shown in Figure 1 and Figure 2, stator frame 1 is by high strength, high rigidity, heat-resisting, anti-resistance, the aging-resistant engineering plastics precision injection molding of dashing.Fan groove 16 is a groove, the external arc of this fan groove and interior circular arc respectively are provided with a retaining muscle 13, be used to hold fan-shaped winding 2, it can not fallen down on stator frame 1, see also Fig. 6, Fig. 7, after fan-shaped winding 2 is all loaded onto stator frame 1, with interior trim ring 10 and outer trim ring 12 fan-shaped winding and stator frame 1 are tightly forced together, and when having a certain group of coil to damage in the stator winding, only need pull down inside and outside trim ring, can conveniently change maintenance.Inside and outside trim ring high strength, high rigidity, heat-resisting, shock-resistant, aging-resistant engineering plastics precise injection molding type.Fan groove is arranged to through-hole structure, and throughhole portions can make fan-shaped winding 2 draw closer together with permanent magnet 3, and air gap between the two is more little, and efficiency of motor is just high more.Can accomplish 0.1～0.8mm along the end play of described power transmission shaft 8 between fan-shaped winding 2 of the present invention and the permanent magnet 3, promptly minimum clearance can be accomplished 0.1mm.The air gap of this structure is unlike with epoxy resin or integrated through injection molding moulding, because the winding outer surface is all encased by epoxy resin or plastic rubber material, cause the air gap of permanent magnet and winding will do very greatly, general 1～2mm or bigger, make the power density in magnetic field reduce, efficient reduces too greatly.The profile of stator frame 1 can be circular, square or other shape, specifically decides according to different use occasions.Owing to adopted the stator frame of non-metal conductor, when motor rotates, stator frame 1 can not produce induced current because of axial alternating magnetic field in stator frame 1, both eliminated iron loss to the magnetic resistance and the stator of rotor, thoroughly eliminated the pyrotoxin of iron loss again, when the loss of motor is reduced greatly during work temperature lower.The present invention only needs just whole stator component assembling to be finished in short a few minutes, and tool labour intensity is low, packaging technology is reliable, simple, production efficiency is high, can be easy to maintenance etc. advantage.Adopt stator structure of the present invention, solved fully that the conventional motors stator adopts epoxy resin with winding or the integrated through injection molding moulding process is unreasonable, molding time is long, production efficiency is low, problem such as maintenanceability not.
As shown in Figure 1 and Figure 2, rotor disk 4 is by metal material (iron, steel, powder metallurgy etc.) the microdiecast moulding of magnetic conduction, can be on the rotor disk according to the groove of the evenly distributed plurality of sector of designing requirement, also can make whole ring groove, the permanent magnet 3 of respective slot shape, is fixed in the groove the N utmost point and the combination of the S utmost point by some.Because rotor disk 4 adopts the metal material of magnetic conduction to make, and fluted location, after permanent magnet 3 is placed on groove, because fluted and magneticaction, permanent magnet 3 and rotor disk 4 can be fixed together on request accurately, make the permanent magnet mounting process simpler, assemble simpler and easy, reliable.In addition rotor disk 4 can according to the needs of motor heat radiation itself outside radial surface set up many ribs 14, when rotor rotation, this rib 14 can dispel the heat to motor as fan blade, takes the heat in the motor out of the motor outside by the louvre 17 of upper end cover 11 and bottom end cover 5.
As shown in Figure 4, the fan-shaped winding 2 of the flat enamelled wire of individual layer that performs for coiling of the present invention.Because it is together multilaminate coiled to adopt flat enamelled wire to make that coiling can realize not having the gap.And round wire is because the gap inevitably appears in the geometry of the cross section of wire rod own, the spatial joint clearance that is winding nearly 10% can not utilize, and adopt the flat wire can be with the utilization in the space 100% of winding, make the volume of winding can do forr a short time or the big or small constant situation of winding under, the power of motor does more.Because the wire rod of winding is wound on together closely, there is not the air gap in addition, makes winding possess higher heat-sinking capability, can increase the electric current that winding passes through, make the power of motor further to strengthen.Break the limitation that existing iron-core less motor power can only be done very for a short time, rationally utilize the space, reasonably moulding, packaging technology economize on resources, and this is that existing iron-core less motor is not available.As the motor of a 1KW, the overall size of motor is maximum only need accomplish about 250mm that generally in 20～30mm, according to the watt level difference of motor, the thinnest 10mm that can accomplish of the thickness of motor is with interior even thinner for thickness.
For improving the motor stator winding utilization of space, the spy becomes fan-shaped with design of Windings, and with respect to traditional circular winding, the space utilization of fan-shaped winding improves more than 20%～30%.Fan-shaped winding 2 forms through special Winder coiling, can first coiling single layer winding, 2,4,6 be superimposed to form fan-shaped winding 2 of the present invention by multilayer (even level:, 8......N) single layer winding again.Just winding is directly turned to the method that is superimposed in the time of also can adopting coiling, just with respect to the method that superposes after the individual layer coiling, technology more complicated during latter's coiling, poor operability, making is longer man-hour.Owing to use flat enamelled wire instead, technique for coiling is simpler, and the winding surface that coiling is good is more smooth.For follow-up multilayer stack provides advantageous conditions.After the single layer winding coiling is good, only need coat fixing glue, another one winding A2 is overlaped with winding A1 on request, and the binding post at A1, two winding centers of A2 linked together get final product on the surface of a winding A1.Adopt the technology and the bilayer of multilayer stack winding to be more or less the same, just number of plies difference around the technology of stack.As shown in Figure 5, the winding schematic diagram that superposes for bilayer.
Structure of the present invention and technology, be equally applicable to brush and brushless generator, be that generator adopts structure of the present invention, when rotor disk is rotated by the external force effect, the magnetic line of force in the magnetic field that sector (-shaped) coil side lead perpendicular cuts permanent magnet produces, in stator winding, produce induced electromotive force, cooperate the alternating current output device, thereby obtain a kind of high-power, high efficiency generator.Also applicable all machine fields, particularly wind power generation, electric motor car etc.
The embodiment that the above only designs for the present invention not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. ultra-thin high power DC magneto, the disc-like rotor parts that together rotate with described power transmission shaft (8) of comprise power transmission shaft (8), be placed in the stator component of the plate-like in this power transmission shaft (8) stage casing, being located at these stator component both sides respectively, be located at the upper and lower end cap (11,5) of these rotor part both sides respectively, it is characterized in that, described stator component comprises: the stator frame of plate-like (1), annular are located at a plurality of fan grooves on this stator frame (1), are located at the fan-shaped winding (2) in this fan groove, the inside and outside trim ring (10,12) of fixing this fan-shaped winding (2); Described rotor part comprises: rotor disk (4), the annular of fixedlying connected with power transmission shaft (8) is located at groove on this rotor disk (4), is fixed in the permanent magnet (3) in this groove, and the surface of rotor disk that is provided with permanent magnet (3) is towards described fan-shaped winding (2).
2. ultra-thin high power DC magneto as claimed in claim 1 is characterized in that, the inner ring of described stator frame (1) is fixedlyed connected with the outer ring of pair of bearings (9), and this inner ring to bearing (9) tightly is enclosed within the stage casing of described power transmission shaft (8).
3. ultra-thin high power DC magneto as claimed in claim 2, it is characterized in that, also be provided with a bearing pedestal (6) between the outer ring of the inner ring of described stator frame (1) and described pair of bearings (9), the inner ring that is stator frame (1) is connected with this bearing pedestal (6) cylindrical, and this is located in the endoporus of this bearing pedestal (6) bearing (9).
4. ultra-thin high power DC magneto as claimed in claim 3 is characterized in that described fan groove is a groove, and the external arc of this fan groove and interior circular arc respectively are provided with a retaining muscle (13) that is used to hold fan-shaped winding (2).
5. ultra-thin high power DC magneto as claimed in claim 4 is characterized in that, the end play along described power transmission shaft (8) between described fan-shaped winding (2) and the permanent magnet (3) is 0.1～0.8mm.
6. ultra-thin high power DC magneto as claimed in claim 5 is characterized in that, the groove of described annular array on rotor disk (4) is a plurality of fan-shaped grooves or an integral ring-shaped groove; The thickness of described permanent magnet (3) is greater than the degree of depth of described groove.
7. ultra-thin high power DC magneto as claimed in claim 6, it is characterized in that, described fan-shaped winding (2) is for to be formed by stacking or directly to turn to the winding that is superimposed by the multilayer single layer winding, and this fan-shaped winding is formed by flat conductor or round conductor coiling.
8. ultra-thin high power DC magneto as claimed in claim 6, it is characterized in that described stator frame (1), interior trim ring (10) and outer trim ring (12) are by high strength, high rigidity, heat-resisting, anti-resistance, the aging-resistant engineering plastics precision injection molding of dashing; Described rotor disk (4) is by the metal material microdiecast moulding of magnetic conduction, and the outer surface of rotor disk (4) is provided with rib (14).
9. a ultra-thin high power DC magneto is characterized in that, comprises power transmission shaft (8), is fixedly connected on the stator component of the plate-like in this power transmission shaft (8) stage casing, is located at the disc-like rotor parts of these stator component both sides respectively; Described stator component comprises: the stator frame (1) of the plate-like of fixedlying connected with described power transmission shaft (8), annular are located at a plurality of fan grooves on this stator frame (1), are located at the fan-shaped winding (2) in this fan groove, the inside and outside trim ring (10,12) of fixing this fan-shaped winding (2); Described rotor part comprises: rotor disk (4), the annular that is connected with described power transmission shaft (8) by a rolling bearing (15) is located at groove on this rotor disk (4), is fixed in the permanent magnet (3) in this groove, and the surface of rotor disk that is provided with permanent magnet (3) is towards described fan-shaped winding (2).
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| CN 201010247971 CN101951106B (en) | 2010-08-06 | 2010-08-06 | Ultrathin high-power direct current magnetoelectric motor |
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| CN 201010247971 CN101951106B (en) | 2010-08-06 | 2010-08-06 | Ultrathin high-power direct current magnetoelectric motor |
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