CN203660839U - Modularized multilayer disc-type motor based on effective magnetic domain technology - Google Patents
Modularized multilayer disc-type motor based on effective magnetic domain technology Download PDFInfo
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- CN203660839U CN203660839U CN201320889137.8U CN201320889137U CN203660839U CN 203660839 U CN203660839 U CN 203660839U CN 201320889137 U CN201320889137 U CN 201320889137U CN 203660839 U CN203660839 U CN 203660839U
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- type motor
- disc type
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Abstract
The utility model discloses a modularized multilayer disc-type motor based on an effective magnetic domain technology. A disc-type rotor and a proximate disc-type stator winding serve as a kinetic energy conversion unit, wherein the disc-type rotor is fixedly provided with a plurality of permanent magnets on the disc surface. A plurality of kinetic energy conversion units are sequentially aligned and superposed in the axial direction to form the modularized multilayer disc-type motor. The permanent magnets of each rotor are identical in shape and are aligned in the axial direction. At least two sets of kinetic energy conversion units are installed in the axial distance with the following length: the length is 12-14 times of the thickness of the permanent magnet. According to the utility model, the basic structural parameters of the disc-type motor are determined, and in the range of the structural parameters provided by the utility model, the efficiency of the disc-type motor is at least 20% higher than a column-type motor.
Description
Technical field
The utility model relates to generator or motor technology, is a kind of modularization Multilayer disc type motor based on effective magnetic domain technology specifically.
Background technology
Conventional motors is cylindrical electrical machine, and the rotor heat radiation difficulty of internal rotor, if used permanent magnet at high temperature to have irreversible demagnetization in rotor, motor performance declines, and the situation of external rotor electric machine is contrary with inner rotor motor, stator module heat radiation difficulty, and stator dimensions is restricted.
Disc type electric machine is to be invented by faraday for 1821, and the stator of disc type electric machine and rotor are all plane disc structure, stator and rotor axial alternative arrangement.Be limited to material and technological level at that time, disc type electric machine fails further to be developed.Along with becoming increasingly conspicuous of the energy and environmental problem, new forms of energy become the focus that people pay close attention to gradually.Particularly wind-powered electricity generation, as one of the New Energy Industry of the most ripe tool commercialized development prospect of present stage, has obtained the great attention of national governments and each major company.Especially miniature wind power generation system, mobility is high, use flexibly, not only in pastoral area, the remote districts such as fishing boat, island have broad application prospects, and on the small-power power consumption equipments such as cities and towns illumination, monitoring, also have unrivaled advantage.Disc type electric machine is simple and compact for structure, volume is little and torque density is high, and particularly double external rotor, without the disc-type permanent magnet motor of stator core, has been eliminated cogging torque and stator iron loss, and detent torque is low, and efficiency is high; On external rotor, can engine be directly installed, system is simple and reliable.
Still there is the space of further raising in the magnetic flux density of the disc type stator of existing disc type electric machine and power density.Although existing people proposes the stack operational version of disk type motor, in use and effect, also nobody proposes to make disc type electric machine surmount clear and definite foundation and the conclusion of traditional pillar motor.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of disc type electric machine that can significantly improve delivery efficiency and clearly determine the superimposed occupation mode of multilayer disc chip motor, i.e. the modularization Multilayer disc type motor based on effective magnetic domain technology.
The technical solution of the utility model realizes with following form:
The described modularization Multilayer disc type motor based on effective magnetic domain technology, comprising: shell, base, end cap, rotating shaft, bearing, rotor, stator winding, and described end cap and described shell are connected and fixed, and rotating shaft and end cap are by described bearing assemble; Described rotor is plate-like and is connected and fixed with described rotating shaft, and on rotor, be fixedly embedded with the permanent magnet that is exposed to rotor disk face both sides, stator winding and end cap that motor is distolateral are fixed, and it is characterized in that:
Take a rotor and next-door neighbour's a stator winding as a kinetic energy converting unit, described Multilayer disc type motor is axially aligned successively stack by multiple kinetic energy converting units and is formed, and wherein the shape of each epitrochanterian permanent magnet is consistent and axially align;
The ratio of the thickness of the radius of described rotor and described kinetic energy converting unit is more than or equal to 2.67, is less than or equal to 6;
At least 2 group kinetic energy converting units are installed in the axial distance of following length: this length is 12～14 times of described permanent magnet thickness.
As a kind of embodiment, described permanent magnet is neodymium iron boron magnetic body.
Specific embodiment is that the trade mark of described neodymium iron boron magnetic body is N35, N40, N35H, N40H or N48.In theory, the ndfeb magnet of other trades mark also all has similar characteristic.
As prioritization scheme, described stator winding comprises the discoid stator core with central through hole and is wound in the winding of stator core, the two sides of described stator core evenly offers respectively many upper wire casings and inserting slots radially, described upper wire casing and interlaced arrange identical with inserting slot quantity.
As prioritization scheme, the side of described stator winding is provided with multiple location holes, for stator winding and shell or permeability magnetic material are fixed.
As prioritization scheme, the epitrochanterian permanent magnet of every a slice arranges even number, and the pole orientation of adjacent permanent magnet is arranged on the contrary.
As prioritization scheme, the shape of described permanent magnet is fan-shaped take rotating shaft core as the center of circle.
The utility model compared with prior art has following beneficial effect:
1, in magnetic field superposition situation, because each group stator winding has additionally obtained the stack of the magnetic field force of adjacent kinetic energy converting unit, the rate of change of magnetic flux significantly increases, power output is promoted significantly, and the power output of Multilayer disc type motor is because the condition that meets effective magnetic domain has at least improved more than 20%.The utility model clear and definite proposition first Multilayer disc type motor utilize magnetic field superposition to realize actual conditions and number range that power output effectively promotes.
2, by the stack of many groups standard disc, allow the magnetic flux density in standard disc reach capacity, realize the raising again of magnetic flux density, and by the introduction by magnetic field to the microcirculation magnetic line of force between magnet, guide the more microcirculation magnetic line of force by coil, magnetic flux is maximized.
3, because the magnetic circuit of disc type electric machine is vertical, be that uniform magnetic field distributes, the radioactivity magnetic circuit of comparing columnar electric machine has larger magnetic flux density, thereby engine output density is larger.The clear and definite on this basis structure basic parameter of disc type electric machine.
4, the utility model proposes the modularization production decision of disc type electric machine unit, the modular superimposition of multilayer kinetic energy converting unit, after kinetic energy converting unit standardized production, reduce cost on the one hand, improve production efficiency, the lifting of the parallel connection of many pack modules assembling feasible system safety and fault freedom, can realize easily for different specifications and models the upgrading of system on the other hand.Many group stacks make system can realize easily redundant design and produce, and guarantee the steady operation of system.
5, because the wire casing being crisscross arranged is all offered in iron core upper and lower end face, stator space utilance after improvement is higher, therefore can realize positive and negative coiling, has improved the volume utilization of iron core, can reduce vibrations by increasing location hole, strengthen integrally-built stability; By the improvement design to iron core both ends of the surface wire casing, can improve magnetic structure; Also improved volume (or quality) energy Ratios of power output simultaneously.
The utility model has great significance to applying of disc type electric machine.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model disk generator;
Fig. 2 is effective magnetic domain schematic diagram;
Fig. 3 is the structural representation of stator core;
Fig. 4 is that the magnetic line of force of stator core moves towards schematic diagram;
Fig. 5 is that disc type motor coil area maximizes winding schematic diagram,
Fig. 6 is that pillar motor coil area maximizes winding schematic diagram.
In figure: 1-iron core, 2-upper wire casing, 3-inserting slot, 4-location hole, 5-disc type motor coil, 6-pillar motor coil, 8-kinetic energy converting unit, 9-shell, 10-end cap, 11-base, 12-rotating shaft, 13-bearing, 14-stator winding, 15-rotor.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated: as shown in Fig. 1,2, the described modularization Multilayer disc type motor based on effective magnetic domain technology, comprise: shell 9, base 11, end cap 10, rotating shaft 12, bearing 13, rotor 15, stator winding 14, described end cap 10 is connected and fixed with described shell 9, and rotating shaft 12 is assembled by described bearing 13 with end cap 10; Described rotor 15 is for plate-like and be all connected and fixed with described rotating shaft 12, is fixedly embedded with the permanent magnet that is exposed to rotor disk face both sides on rotor, and distolateral stator winding 14 and end cap are fixed.
Described Multilayer disc type motor is take 14 as kinetic energy converting units 8 of a stator winding of a rotor 15 and next-door neighbour, and multiple kinetic energy converting units are axially aligned successively stack and formed, and wherein the shape of each epitrochanterian permanent magnet is consistent and axially align.From the document of current disclosure, the disc type electric machine even disc type electric machine of multilayer has become a disclosed scheme.But how effectively to improve the delivery efficiency of Multilayer disc type motor, we cannot obtain more enlightenments from traditional pillar motor.
By inventor's experiment repeatedly, make the efficiency of disc type electric machine be better than pillar motor, need to first meet following primary condition:
The ratio of the thickness of the radius of rotor and described kinetic energy converting unit 8 is more than or equal to 2.67.
Had by Faraday's electromagnetic induction law:
Wherein e is induced potential, and N is coil turn,
for the rate of change of magnetic flux, and
In formula, S is area coil, and B is magnetic flux density (or magnetic flux density).Compared with pillar motor, in the situation that not considering N, can increase the value of induced potential e as long as increase the value of B or S.For magnetic induction density B, because disc type electric machine is that uniform magnetic field distributes, the radioactivity magnetic circuit that cylindricality stator is compared in identical magnetic field has larger and more stable magnetic flux density, so the magnetic field intensity of disc type electric machine is greater than the magnetic field intensity of pillar motor under same material.
For area coil S, if need to meet the area coil that the area coil of disc type electric machine is greater than pillar motor, can do following reckoning: the design of supposing area coil is the idealized design of mutually connecting for each magnet and all windings, as shown in Figure 5 and Figure 6, after area is idealized, be the area of whole card or cylinder, must (π R
dish2-π r
dish2) >2 π R
posth
post, wherein R
dishfor rotor outer rim radius, r
dishfor rotor inner edge radius, R
postfor the stator inner wall radius of pillar motor, h
postfor the axial length of pillar motor stator.A kinetic energy converting unit of disc type electric machine comprises a rotor and the stator that shape is identical, and rotor and stator are ring discoid structure, at R
dish=R
post, and r
dish=R
dish/ 2 o'clock, can derive: R
dish/ h
dish>8/3, the ratio of the rotor of disc type electric machine and kinetic energy converting unit thickness is R
dish/ h
dish>8/3 can guarantee that area coil S is greater than pillar motor.Thus, the utility model proposes the standard plate concept of disc type electric machine, meet: in normal volume, design kinetic energy converting unit 8, the ratio of the thickness of the radius of rotor and kinetic energy converting unit 8 is more than or equal to 2.67, gets on ratio and is limited to 6.The magnetic conversion efficiency that meets the disc type electric machine of this condition just likely exceedes pillar motor.
In addition, the phenomenon of the utility model based on magnetic field force stack proposes the concept of effective magnetic domain on the basis of experiment repeatedly.In Fig. 2 experiment, three permanent magnet cN, bN, first aN adopts the trade mark is that the ndfeb magnet of N35 or N40 is tested, magnet thickness is respectively ah, bh, ch, ah=bh=ch=7mm, permanent magnet aN and bN distance are yb, suppose that aN now keeps balance under the magnetic field of bN and gravitational field effect, now at mh place above bN, permanent magnet cN is set, if now aN breaks stress balance and moves upward, the suffered magnetic force that aN is described was enhanced because of adding of aN, test show that the do experiment distance mh of aN of a kind of ndfeb magnet N35 is about 12ah～13ah, the distance mh of another kind of ndfeb magnet N40 test aN is about 13ah～14ah, also can draw akin conclusion with the ndfeb magnet of other trades mark.This test is applied to Multilayer disc type motor, find in magnetic field superposition situation, because each magnetic line of force of passing of group stator winding has additionally obtained the stack of the magnetic field force of adjacent kinetic energy converting unit 8, power output is promoted significantly, and the power output of Multilayer disc type motor has at least improved more than 20% under the condition that meets effective magnetic domain.The utility model clear and definite proposition first Multilayer disc type motor utilize magnetic field superposition to realize actual conditions and number range that power output effectively promotes:
At least 2 group kinetic energy converting units 8 are installed in the axial distance of following length: this length is 12～14 times of described permanent magnet thickness.
As a kind of embodiment, the material of described permanent magnet is neodymium iron boron magnetic body.Typical case's permanent magnet material is to use N35 or N40.Use the stronger permanent magnet material of coercive force will obtain more obvious and effective result.
As Fig. 3,4, described stator winding 14 comprises the discoid stator core with central through hole and is wound in the copper winding of stator core, the two sides of described stator core evenly offers respectively many upper wire casings 2 and inserting slots 3 radially, described upper wire casing 2 and interlaced arrange identical with inserting slot 3 quantity.
When coiling, can carry out coiling by adjacent two the upper wire casings 2 in upper surface, adjacent two inserting slots 3 of lower surface carry out coiling; Also a upper wire casing 2 that can upper surface carries out coiling with the inserting slot 3 of oblique corresponding lower surface.Use the stator core of two-sided wrong groove setting to make the utilance of stator core answer increase, with the compacter more coiling of multi-coil of realization of little volume, power output is effectively promoted.
Especially, after the two-sided coiling of stator, in Multilayer disc type motor, receive the magnetic line of force that many group kinetic energy converting units 8 are sent simultaneously, organize the magnetic line of force consistent owing to arranging, by the as one man Hue in the same way of spuious magnetic line of force height more.And because each kinetic energy converting unit always has adjacent kinetic energy converting unit in the scope of effective magnetic domain, the magnetic flux of stator winding is almost multiplied, in the situation that winding and magnetic flux all significantly increase, the delivery efficiency of unit entirety also significantly improves.The two-sided wrong groove of stator slot is arranged and can be reduced stator thickness as far as possible, alleviates the weight of stator, guarantees the structural strength of stator simultaneously.
As Fig. 3, the side of described stator winding 14 is provided with multiple location holes 4, for stator winding and shell 9 or permeability magnetic material are fixed.The modular combination that is arranged so that Multilayer disc type motor of location hole is easy to realize, and each group kinetic energy converting unit can independently be made, and combines.The mode amalgamation that rotating shaft between every group of kinetic energy converting unit can be threaded connection or buckle connects is integrated.
As prioritization scheme, the epitrochanterian permanent magnet of every a slice arranges even number, and the pole orientation of adjacent permanent magnet is arranged on the contrary.In order to improve delivery efficiency on less volume, due to closely arranging of permanent magnet, between disc, almost become uniform magnetic field, coil moves and does not have electromotive force output in uniform magnetic field, if more sparse the arranging of permanent magnet can head it off, the still energy of volume output meeting minimizing equally.Use the staggered of permanent magnet oppositely to arrange, have two benefits, when one side rotor, the variation of magnetic flux rate is multiplied, and can make arranging of permanent magnet intensive as far as possible, improves the delivery efficiency of unit volume; On the other hand, can make the installation contraposition of multi-layer rotor disc become easy, staggered magnetic field, effectively having obvious interaction force under the effect at magnetic force in magnetic domain, makes the rotor disc of different layers be easy to alignment installation.
As prioritization scheme, the center of circle that is shaped as of described permanent magnet is the fan-shaped of rotating shaft core.Fan-shaped permanent magnet can utilize rotor disk sheet area to greatest extent, improves coil flux amount, can obtain larger output voltage with the stator of smaller size smaller and quantity.
The disc type electric machine of being made up of the wrong groove electronics of disc type of the present utility model can be used on automobile, at least double with conventional electric generators phase specific power density, in aircraft, use, in the situation that guaranteeing stable output, can reduce aircraft deadweight and institute and take up space, reduction oil consumption.
Claims (7)
1. the modularization Multilayer disc type motor based on effective magnetic domain technology, comprise: shell (9), base (11), end cap (10), rotating shaft (12), bearing (13), rotor (15), stator winding (14), described end cap (10) is connected and fixed with described shell (9), and rotating shaft (12) is assembled by described bearing (13) with end cap (10); Described rotor (15) is plate-like and is connected and fixed with described rotating shaft (12), is fixedly embedded with the permanent magnet that is exposed to rotor disk face both sides on rotor, and the distolateral stator winding (14) of motor is fixed with end cap, it is characterized in that:
Take a rotor (15) and next-door neighbour a stator winding (14) as a kinetic energy converting unit (8), described Multilayer disc type motor is axially aligned successively stack by multiple kinetic energy converting units and is formed, and wherein the shape of each epitrochanterian permanent magnet is consistent and axially align;
The ratio of the thickness of the radius of described rotor and described kinetic energy converting unit (8) is more than or equal to 2.67, is less than or equal to 6;
At least 2 group kinetic energy converting units (8) are installed in the axial distance of following length: this length is 12～14 times of described permanent magnet thickness.
2. the modularization Multilayer disc type motor based on effective magnetic domain technology according to claim 1, is characterized in that: described permanent magnet is neodymium iron boron magnetic body.
3. the modularization Multilayer disc type motor based on effective magnetic domain technology according to claim 2, is characterized in that: the trade mark of described neodymium iron boron magnetic body is N35, N40, N35H, N40H or N48.
4. the modularization Multilayer disc type motor based on effective magnetic domain technology according to claim 1, it is characterized in that: described stator winding (14) comprises the discoid stator core with central through hole and is wound in the winding of stator core, the two sides of described stator core evenly offers respectively many upper wire casings (2) and inserting slots (3) radially, described upper wire casing (2) and interlaced arrange identical with inserting slot (3) quantity.
5. according to the modularization Multilayer disc type motor based on effective magnetic domain technology described in claim 1 or 4, it is characterized in that: the side of described stator winding (14) is provided with multiple location holes (4), for stator winding and shell (9) or permeability magnetic material are fixed.
6. the modularization Multilayer disc type motor based on effective magnetic domain technology according to claim 1, is characterized in that: the epitrochanterian permanent magnet of every a slice arranges even number, and the pole orientation of adjacent permanent magnet is arranged on the contrary.
7. according to the modularization Multilayer disc type motor based on effective magnetic domain technology described in claim 1 or 6, it is characterized in that: the shape of described permanent magnet is fan-shaped take rotating shaft core as the center of circle.
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| CN201320889137.8U CN203660839U (en) | 2013-12-31 | 2013-12-31 | Modularized multilayer disc-type motor based on effective magnetic domain technology |
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| CN201320889137.8U CN203660839U (en) | 2013-12-31 | 2013-12-31 | Modularized multilayer disc-type motor based on effective magnetic domain technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683767A (en) * | 2013-12-31 | 2014-03-26 | 余仁伟 | Modular multilayer disc type motor based on effective magnetic domain technology |
| CN105490481A (en) * | 2015-12-25 | 2016-04-13 | 华中科技大学 | Multi-disc and multi-gap axial flux magnetic field modulation permanent-magnet motor with high torque density |
| CN106300801A (en) * | 2015-06-08 | 2017-01-04 | 韩汶冀 | A kind of disc type multistage power generating device |
| CN108141122A (en) * | 2015-10-12 | 2018-06-08 | 万络机电公司 | With axial magnetic flux electromagnetic motor and for motor stator parallel redundancy power supply motor vehicles power steering system |
-
2013
- 2013-12-31 CN CN201320889137.8U patent/CN203660839U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683767A (en) * | 2013-12-31 | 2014-03-26 | 余仁伟 | Modular multilayer disc type motor based on effective magnetic domain technology |
| CN106300801A (en) * | 2015-06-08 | 2017-01-04 | 韩汶冀 | A kind of disc type multistage power generating device |
| CN108141122A (en) * | 2015-10-12 | 2018-06-08 | 万络机电公司 | With axial magnetic flux electromagnetic motor and for motor stator parallel redundancy power supply motor vehicles power steering system |
| CN105490481A (en) * | 2015-12-25 | 2016-04-13 | 华中科技大学 | Multi-disc and multi-gap axial flux magnetic field modulation permanent-magnet motor with high torque density |
| CN105490481B (en) * | 2015-12-25 | 2018-10-26 | 华中科技大学 | A kind of high torque density polydisc-more air gaps axial direction flux field modulation magneto |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20161231 |