CN103280910A - Magnetoelectric micro electric generator of axial magnetic field - Google Patents
Magnetoelectric micro electric generator of axial magnetic field Download PDFInfo
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- CN103280910A CN103280910A CN2013101428572A CN201310142857A CN103280910A CN 103280910 A CN103280910 A CN 103280910A CN 2013101428572 A CN2013101428572 A CN 2013101428572A CN 201310142857 A CN201310142857 A CN 201310142857A CN 103280910 A CN103280910 A CN 103280910A
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Abstract
The invention discloses a magnetoelectric micro electric generator of an axial magnetic field. The magnetoelectric micro electric generator consists of an electric generator part and a power source part, wherein the electric generator part adopts a disc type permanent micro electric generator structure with a single rotor and a power source is a turbine; the electric generator part comprises an electric generator shell, an upper stator, a lower stator, a coil and a central shaft; the stator consists of a magnet yoke and a magnet; the upper stator and the lower stator are respectively arranged in the shell through an annular bump on the inner surface of the shell; the upper magnet yoke and the lower magnet yoke respectively serve as an upper cover plate and a lower cover plate of the electric generator and the axial structure size of the electric generator can be effectively reduced; the coil serving as an electric generator rotor is positioned between the upper stator and the lower stator and is connected with the central shaft; and the turbine drives the coil to rotate through central shaft. The electric generator has the advantages of simple structure, small volume, high power density and high impact resistance.
Description
Technical field
The present invention relates to a kind of magneto-electric micro generator, be specifically related to a kind of axial magnetic field magneto-electric micro generator, belong to field of energy source developing technology.
Background technology
Microminiature Mechatronic Systems development in recent years is rapid, and dwindling of Mechatronic Systems volume requires the energy resource supply device also to want miniaturization.Little energy device can be divided into two big classes: very small chemical battery and micro generator.The subject matter that the very small chemical battery exists at present is self-contained finite energy, needs regularly artificial makeup energy, and self-supplying capacity is poor.Micro generator then can initiatively obtain energy from environment, belong to from transducer, does not need regularly artificial makeup energy, and self is pollution-free simultaneously, thereby bright development prospect is arranged.
The synchronous single-phase micro generator of desk permanent-magnet relies on wind turbine to transform wind energy and obtains environmental energy, is a kind of energy device of high-power energy density.This type of micro generator all adopts magnet yoke rotary type both at home and abroad at present, as the micro generator of the cooperation design of plane micro generator, the georgia ,u.s.a Institute of Technology and the Massachusetts Institute of Technology of research group's design of the axial-flow type pneumatic micro turbine electricity generation system of London Imperial College of Science and Technology design, the variable reluctance micro generator of Univ California-Berkeley's design, French LEG, such micro generator volume is big, complex structure, transformation efficiency are low.
Summary of the invention
In view of this, the invention provides a kind of axial magnetic field magneto-electric micro generator, this electric generator structure is simple, volume is little, power density is big, start low, the strong shock resistance of wind speed.
Axial magnetic field magneto-electric micro generator of the present invention comprises: turbine, generator casing, upper magnet yoke, lower yoke, last magnet, lower magnet, coil and central shaft; Wherein central shaft comprises connecting axle, middle connecting axle and following connecting axle.
Described generator casing is the tubular construction of both ends open, is processed with annular protrusion in the centre position of generator casing 2 inner surfaces.
Described upper magnet yoke is the cylindrical structural with stepped centre bore; Process the annular groove that is used for placing magnet at the end face of its place, large aperture side, the wall thickness at this annular groove outer circumference surface place is less than the thickness of generator casing inner surface annular protrusion; Described upper magnet yoke and last magnet attract each other fixed as a whole by magnetic force, form the last stator of generator; Described lower yoke adopts identical structure to form the following stator of generator with lower magnet.
The described stator of going up is installed in generator casing inner annular convex upper surface; Described stator down is installed in the lower surface of generator casing inner annular projection; Wherein go up magnet and lower magnet is staggered relatively.
Described coil is the disc-shaped structure with centre bore, and it is and all gapped between coil and last magnet and the lower magnet between last stator and following stator; The upper surface of described coil and lower surface respectively have an output line, and two output lines are in coil upper surface and peripheral two the plane annular structures of coiled respectively of lower surface centre bore.
The described multidiameter of connecting axle for being made by electric conducting material of going up, last connecting axle is positioned at the centre bore of upper magnet yoke, the bigger end of its diameter of axle and upper magnet yoke centre bore aperture major part matched in clearance; The centre bore that upper magnet yoke is passed in the end of the bigger end of the diameter of axle of last connecting axle closely contacts with the loop configuration that coil upper surface output line forms; Its diameter of axle passes the centre bore of upper magnet yoke than small end from the top, and it is relative with the shaft shoulder of upper magnet yoke centre bore to go up the shaft shoulder of connecting axle, and installs one and enclose ball between two shaft shoulders; The female blind hole of heart processing belt therein along the lower surface of last connecting axle.
Described connecting axle down is the multidiameter that electric conducting material is made, and it adopts the mode identical with last connecting axle to be installed in the centre bore of lower yoke; The end of wherein descending the bigger end of the connecting axle diameter of axle closely contacts with the loop configuration that coil lower surface output line forms, and is gapped between the lower surface of its diameter of axle than the end of small end and lower yoke; At the female through hole of center processing belt of following connecting axle, this through hole connects by the blind hole at hub of a spool hole and last connecting axle center.
Have externally threaded intermediate connecting shaft and pass down connecting axle, coil and last connecting axle successively, be connected with internal thread coupling on following connecting axle and the last connecting axle; Described coil is the rotor of generator.
Described turbine is coaxial to be fixed in the connecting axle top and to be positioned at part outside the generator casing.
Described coil comprises m layer line circle, and wherein m is the even number more than or equal to 2; Every layer line circle is single-phase, concentric type winding plane annular coil.
In the described coil each layer line circle by two above profiles be fan-shaped back-shaped coil adjacent arrangement forms around its axle center, each the back-shaped coil in each layer line circle is connected mutually.
The installation form of interference fit is all adopted in described junction of going up stator and following stator and generator casing.
Beneficial effect
The designed axial magnetic field magneto-electric micro generator of the present invention adopts the coil rotational structure, and that the generator of this structure has is simple in structure, volume is little, power density is big and the advantage of strong shock resistance.Be specially:
(1) with upper magnet yoke and lower yoke respectively as the upper and lower cover plate of generator, can effectively reduce the axial arrangement size of generator.
(2) magnet of generator is installed on the annular protrusion of enclosure, and its suffered impulsive force is born by the shell projection, has improved the impact resistance of generator.
(3) adopt ball to replace bearing in the present invention, bear guiding and the supporting role of connecting axle by ball, reduced axial dimension, reduced cost.
(4) by up and down connecting axle, ball, and go up two output loops that lower yoke constitutes, simplify the structure;
(5) yoke and magnet attract each other fixed back as stator in the present invention, not only form the required magnetic loop of generator, also play the effect of centre of support axle, saved special supporting construction, simplify electric generator structure, made the axial dimension of generator further dwindle.
(6) in micro generator of the present invention, the magnet in the generator unit stator is supported by generator casing; Determine the relative motion position of rotating shaft and yoke by ball, play supporting and guide effect; Rotor is the less coil of quality, and these designs all help to improve the shock proof ability of generator.
(7) adopt single-phase, concentric type winding plane lattice coil, can effectively utilize the surface area of coil, increase the encirclement area of coil, thereby improve the power density of output voltage amplitude and generator.Simultaneously, adopt planar coil can also reduce axial dimension, increase coil working place magnetic flux density, reach the purpose that reduces volume and improve output voltage; Adopt the single phase winding form to help to reduce the energy loss that causes because of rectification, can simplify rectification circuit, simple in structure, be fit to plane processing, rate of finished products height.
Description of drawings
Fig. 1 is turbo-power source work schematic diagram;
Fig. 2 is axial magnetic field magneto-electric micro generator structure chart of the present invention;
The structural representation of Fig. 3 coil.
Wherein: connecting axle, 11-ball under connecting axle, the 10-among 1-turbine, 2-generator casing, 3-upper magnet yoke, 4-lower yoke, the last magnet of 5-, 6-lower magnet, 7-coil, the last connecting axle of 8-, the 9-.
Embodiment
The present invention is described in further detail below in conjunction with drawings and the embodiments.
Present embodiment provides a kind of axial magnetic field magneto-electric micro generator, and this micro generator is simple in structure, volume is little, power density is big, strong shock resistance.
Described axial magnetic field magneto-electric micro generator is made up of micro generator and power source two parts, and its operation principle as shown in Figure 1.Wherein micro generator adopts the structure of desk permanent-magnet micro generator.Desk permanent-magnet micro generator contrast compare with other micro generators have simple in structure, volume is little, in light weight, advantage such as efficient is high and power density is big; Simple compact structure can improve the impact resistance of magnetic micro generator.Power source adopts the turbine of wind drive.Turbine can obtain the wind energy in the environment and be converted into the mechanical energy that drives the micro generator motion.Turbine continues to sway under the effect of wind-force, and the rotating torque of generation can drive the micro generator rotor and sway, thereby makes generator work.
The concrete structure of described axial magnetic field magneto-electric micro generator as shown in Figure 2, wherein micro generator partly adopts the desk permanent-magnet micro generator structure of single rotor, comprises generator casing 2, goes up stator, stator, coil 7 and central shaft down; Wherein go up stator and comprise upper magnet yoke 3 and lower yoke 4; Following stator comprises magnet 5 and lower magnet 6; Central shaft comprises connecting axle 8, middle connecting axle 9 and following connecting axle 10.
Wherein generator casing 2 is the tubular construction of both ends open, is processed with annular protrusion in the centre position of generator casing 2 inner surfaces.
The multidiameter of last connecting axle 8 for being made by electric conducting material, the diameter of the bigger end of its diameter of axle is less than the aperture of upper magnet yoke 3 central stepped than macropore, the diameter of axle is slightly smaller than upper magnet yoke 3 central stepped than the aperture of aperture than the diameter of small end, thus with upper magnet yoke 3 central stepped become to be slidingly matched than hole-shaped.The described connecting axle 8 of going up is positioned at the centre bore of upper magnet yoke 3, and makes the shaft shoulder of connecting axle 8 relative with the shaft shoulder of upper magnet yoke 3 central stepped.The centre bore that the bigger end of the diameter of axle of last connecting axle 8 passes upper magnet yoke 3 closely contacts with the loop configuration that the output line of the upper surface of coil 7 forms.The diameter of axle passes the centre bore of upper magnet yoke 3 from the top than small end.One circle ball is installed between the shaft shoulder of the shaft shoulder of last connecting axle 8 and upper magnet yoke 3 shoulder holes, is adopted the ball replacement bearing in the present embodiment here, be conducive to dwindle the axial dimension of whole generating machine.Simultaneously along the lower surface of last connecting axle 8 therein the heart be processed with the blind hole that has internal thread; The slightly larger in diameter of described blind hole is in identical with the diameter of coil 7 centre bores.
Following connecting axle 10 is similarly the multidiameter that electric conducting material is made, and it adopts the mode identical with last connecting axle 8 to be installed in the centre bore of lower yoke 4.Wherein descend the bigger end of connecting axle 10 diameters of axle closely to contact with the loop configuration that the output line of coil 7 lower surfaces forms; Gapped between the lower surface of its diameter of axle than small end and lower yoke.At the female through hole of center processing belt of following connecting axle 10, the slightly larger in diameter of described through hole is in identical with the diameter of coil 7 centre bores, and this through hole connects by the blind hole at coil 7 centre bores and last connecting axle 8 centers.Last connecting axle 8 and following connecting axle 10 remain between upper magnet yoke 3 and the lower yoke 4 by ball.
Be processed with external screw thread on the described intermediate connecting shaft 9, coil 7 is enclosed within on the intermediate connecting shaft 9, the upper and lower end of connecting axle 10 during last connecting axle 8 and following connecting axle 10 are tightened in by interior internal thread respectively.The loop configuration that make to go up the output line formation on connecting axle 8 and following connecting axle 10 and coil 7 upper and lower surfaces closely contacts, and two output lines and the upper and lower connecting axle on the upper and lower surface of coil tightly pressed together, reliably contact with upper and lower connecting axle with the output line that guarantees coil.Simultaneously, intermediate connecting shaft 9 also plays generator is exported insulating effect between the two poles of the earth.
Wherein go up connecting axle 8, upper magnet yoke 3 and between ball constitute an output loop of generator, following connecting axle 10, lower yoke 4 and between ball constitute another output loop of generator, the electric energy that produces on the generator coil is drawn in two loops.
Two yokes and magnet not only form the required magnetic loop of generator among the present invention, also play the effect of centre of support axle, have simplified generator Structure, have dwindled the mechanism size of generator.
Described turbine 2 is coaxial to be fixed in the top that connecting axle 8 is positioned at part outside the generator casing 2.
The operation principle of this micro generator is: under the blowing of wind, turbine drives central shaft and coil 7 rotatablely moves with respect to producing between upper and lower stator; Single back-shaped coil surrounds the change of the magnetic flux generating period in the area on coil, can produce induced electromotive force in back-shaped coil; And by up and down connecting axle, ball, and go up two output loops that lower yoke constitutes the voltage that coil 7 produces is drawn.
Generator of the present invention on the basis of the advantage that keeps original axial magnetic field magnetoelectric generator, under identical generating capacity, further simplified structure, improve impact resistance, reduce axial dimension, reduce cost.
In sum, more than be preferred embodiment of the present invention only, be not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. axial magnetic field magneto-electric micro generator is characterized in that, comprising: turbine (1), generator casing (2), upper magnet yoke (3), lower yoke (4), last magnet (5), lower magnet (6), coil (7) and central shaft; Wherein central shaft comprises connecting axle (8), middle connecting axle (9) and following connecting axle (10);
Described generator casing (2) is the tubular construction of both ends open, is processed with annular protrusion in the centre position of generator casing 2 inner surfaces;
Described upper magnet yoke (3) is for having the cylindrical structural of stepped centre bore; Process the annular groove that is used for placing magnet (5) at the end face of its place, large aperture side, the wall thickness at this annular groove outer circumference surface place is less than the thickness of generator casing (2) inner surface annular protrusion; Described upper magnet yoke (3) and last magnet (5) attract each other fixed as a whole by magnetic force, form the last stator of generator; Described lower yoke (4) adopts identical structure to form the following stator of generator with lower magnet (6);
The described stator of going up is installed in generator casing (2) inner annular convex upper surface; Described stator down is installed in the lower surface of generator casing (2) inner annular projection; Wherein go up magnet (5) and lower magnet (6) is staggered relatively;
Described coil (7) is for having the disc-shaped structure of centre bore, and it is and all gapped between coil (7) and last magnet (5) and the lower magnet (6) between last stator and following stator; The upper surface of described coil (7) and lower surface respectively have an output line, and two output lines are in coil (7) upper surface and peripheral two the plane annular structures of coiled respectively of lower surface centre bore;
The described multidiameter of connecting axle (8) for being made by electric conducting material of going up, last connecting axle (8) is positioned at the centre bore of upper magnet yoke (3), the bigger end of its diameter of axle and upper magnet yoke (3) centre bore aperture major part matched in clearance; The centre bore that upper magnet yoke (3) is passed in the end of the bigger end of last connecting axle (8) diameter of axle closely contacts with the loop configuration that coil (7) upper surface output line forms; Its diameter of axle passes the centre bore of upper magnet yoke (3) than small end from the top, and it is relative with the shaft shoulder of upper magnet yoke (3) centre bore to go up the shaft shoulder of connecting axle (8), and installs one and enclose ball (11) between two shaft shoulders; The female blind hole of heart processing belt therein along the lower surface of last connecting axle (8);
The multidiameter that described connecting axle (10) is down made for electric conducting material, it adopts the mode identical with last connecting axle (8) to be installed in the centre bore of lower yoke (4); The end of wherein descending the bigger end of connecting axle (10) diameter of axle closely contacts with the loop configuration that coil (7) lower surface output line forms, and is gapped between the lower surface of its diameter of axle than the end of small end and lower yoke (4); At the female through hole of center processing belt of following connecting axle (10), this through hole connects by the blind hole at coil (7) centre bore and last connecting axle (8) center;
Have externally threaded intermediate connecting shaft (9) and pass down connecting axle (10), coil (7) and last connecting axle (8) successively, be connected with internal thread coupling on following connecting axle (10) and the last connecting axle (8); Described coil (7) is the rotor of generator;
Described turbine (1) is coaxial to be fixed in connecting axle (8) top and to be positioned at part outside the generator casing (2).
2. according to right 1 described axial magnetic field magneto-electric micro generator, it is characterized in that described coil (7) comprises m layer line circle, wherein m is the even number more than or equal to 2; Every layer line circle is single-phase, concentric type winding plane annular coil.
3. according to right 2 described axial magnetic field magneto-electric micro generators, it is characterized in that, in the described coil (7) each layer line circle by two above profiles be fan-shaped back-shaped coil adjacent arrangement forms around its axle center, each the back-shaped coil in each layer line circle is connected mutually.
4. according to right 1 described axial magnetic field magneto-electric micro generator, it is characterized in that the installation form of interference fit is all adopted in described junction of going up stator and following stator and generator casing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310142857.2A CN103280910B (en) | 2013-04-23 | 2013-04-23 | Magnetoelectric micro electric generator of axial magnetic field |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310142857.2A CN103280910B (en) | 2013-04-23 | 2013-04-23 | Magnetoelectric micro electric generator of axial magnetic field |
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| CN103280910A true CN103280910A (en) | 2013-09-04 |
| CN103280910B CN103280910B (en) | 2015-06-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329996A (en) * | 2016-09-29 | 2017-01-11 | 北京理工大学 | Piezoelectric-magnetoelectric compound micro-generator |
| CN108155754A (en) * | 2018-02-08 | 2018-06-12 | 辽宁工业大学 | Override type generator |
| CN114499098A (en) * | 2022-03-10 | 2022-05-13 | 丹东华通测控有限公司 | Micro-power generation method based on magnetic energy obtained from motor shell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5710476A (en) * | 1995-01-31 | 1998-01-20 | Interscience, Inc. | Armature design for an axial-gap rotary electric machine |
| CN2814773Y (en) * | 2005-07-27 | 2006-09-06 | 卢杨成 | Magnetic system for magneto generator |
| JP4619179B2 (en) * | 2005-03-31 | 2011-01-26 | 株式会社エクォス・リサーチ | Rotating electric machine |
| CN102255403A (en) * | 2011-07-18 | 2011-11-23 | 深圳市双环全新机电股份有限公司 | Brushless motor with iron-core-free disc winding and axial magnetic field and manufacturing process thereof |
| WO2013051954A1 (en) * | 2011-10-04 | 2013-04-11 | Открытое Акционерное Общество "Государственный Ракетный Центр Имени Академика В. П. Макеева | Rotor for a wind energy installation with a vertical axis of rotation |
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2013
- 2013-04-23 CN CN201310142857.2A patent/CN103280910B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5710476A (en) * | 1995-01-31 | 1998-01-20 | Interscience, Inc. | Armature design for an axial-gap rotary electric machine |
| JP4619179B2 (en) * | 2005-03-31 | 2011-01-26 | 株式会社エクォス・リサーチ | Rotating electric machine |
| CN2814773Y (en) * | 2005-07-27 | 2006-09-06 | 卢杨成 | Magnetic system for magneto generator |
| CN102255403A (en) * | 2011-07-18 | 2011-11-23 | 深圳市双环全新机电股份有限公司 | Brushless motor with iron-core-free disc winding and axial magnetic field and manufacturing process thereof |
| WO2013051954A1 (en) * | 2011-10-04 | 2013-04-11 | Открытое Акционерное Общество "Государственный Ракетный Центр Имени Академика В. П. Макеева | Rotor for a wind energy installation with a vertical axis of rotation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329996A (en) * | 2016-09-29 | 2017-01-11 | 北京理工大学 | Piezoelectric-magnetoelectric compound micro-generator |
| CN106329996B (en) * | 2016-09-29 | 2018-10-30 | 北京理工大学 | A kind of piezoelectricity-magnetic electric compound micro generator |
| CN108155754A (en) * | 2018-02-08 | 2018-06-12 | 辽宁工业大学 | Override type generator |
| CN114499098A (en) * | 2022-03-10 | 2022-05-13 | 丹东华通测控有限公司 | Micro-power generation method based on magnetic energy obtained from motor shell |
| CN114499098B (en) * | 2022-03-10 | 2024-02-06 | 丹东华通测控有限公司 | Micro-power generation method based on magnetic energy extraction of motor shell |
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| CN103280910B (en) | 2015-06-17 |
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