CN104883026A - Linear vibration energy collecting device for rolling oscillator - Google Patents
Linear vibration energy collecting device for rolling oscillator Download PDFInfo
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- CN104883026A CN104883026A CN201510246013.1A CN201510246013A CN104883026A CN 104883026 A CN104883026 A CN 104883026A CN 201510246013 A CN201510246013 A CN 201510246013A CN 104883026 A CN104883026 A CN 104883026A
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Abstract
The invention provides a linear vibration energy collecting device for a rolling oscillator. Two bottom magnetic yokes are arranged on a permanent magnet. Each bottom magnetic yoke is provided with two coil pedestals used for holding coil supports. Four coil supports are disposed on the coil pedestals. The bottom magnetic yoke corresponding to an N electrode is used for holding a left coil support and a rear coil support. The bottom magnetic yoke corresponding to an S electrode is used for holding a right coil support and a front coil support. The four coil supports are totally identical. Each coil support is coiled with an induction coil. The induction coils on the coil supports are connected with each other in series. The four coil supports are provided with magnetic yoke pedestals used for holding four magnetic yokes. Each magnetic yoke has teeth and the tooth bottom width is identical to the tooth top width. Besides, teeth on the front and right magnetic yokes and teeth on the front and rear magnetic yokes are distributed in a staggering manner. The ball-shaped oscillator is arranged in a cavity defined by the front and rear magnetic yokes and the left and right magnetic yokes. The upper part of each magnetic yoke is connected with one magnetic yoke support. The linear vibration energy collecting device for the rolling oscillator provided by the invention is comparatively small in leakage flux, high in energy conversion efficiency, small in friction index and good in stability.
Description
Technical field
The present invention relates to energy collecting device, especially a kind of electromagnetic vibration energy gathering-device.
Background technology
A difficult point to wireless sensor network or distributed mini system powerup issue.And vibration is natural a kind of energy existence form.The wave on such as sea, branch swing in the wind, jarring vehicle etc.Vibrating power-generation is the Conversion of Energy various vibration produced is electric energy, is a kind of potential novel power generation device that is pollution-free, not consumption of natural resource, is suitable for wireless sensor network or the employing of distributed mini system node.
A kind of mode realizing vibrating power-generation is electromagnetic induction phenomenon generating.Electromagnetic induction vibration generating device in the past, internal structure is different.Application number is the vibrating electricity generator of 200410067821.3, application number is the three-dimensional vibrating electricity generator of 200810230833.1, application number is the portable vibration generator of 200710126703.9, and application number is the magnetic-field extrusion reinforced vibration generator of 200610051677.3.Paper " new permanent-magnet external linear reciprocating generator performance study " (journal of Zhejiang university engineering version, 41st volume the 9th phase, and paper " Amicro electromagnetic generator for vibration energy harvesting " (JOURNAL OF MICROMECHANICS AND MICROENGINEERING pp.1604-1608), 17 (2007), pp.1257-1265), its structure is all comparatively difficult to ensure the requirement that in card magnetic circuit, air gap is less, fail to realize closed magnetic circuit, low by relevant theoretical its magnetic flux density known of motor, magnetic circuit utilance is not high, vibrational energy utilance is not high.Simultaneously some data coil utilance above-mentioned is also one and can improves part, has comparatively many parts can not effective cutting magnetic line in its coil, and generation electromotive force, affects generating efficiency.Application number is the encircling type vibration generator of 201020125287.8, and four S poles of its permanent magnet are cruciform symmetry distribution, and link together bottom it and be connected with N pole, this has very high requirement to manufacturing process, very difficult manufacture.Simultaneously owing to being provided with coil between N pole and S pole, overall and complicated structure, has namely enablely manufactured permanent magnet, installs also more difficult.Further, due between N pole and S pole across coil, the air gap in that magnetic circuit is still larger, and the magnetic flux that magnetic circuit may be caused not close or to respond to is more weak, and the electric energy of generation is less, and this loses more than gain for it of high manufacturing cost.Application number is the electromagnetic vibration power generation device of 2012104994623, although try hard to eliminate detent force by the method for balancing magnetic force, but because magnetic force in first device is much larger than gravity, and due to the existence of error and asymmetry, detent force unavoidably still exists to a certain extent, hinders oscillator flexible motion; On the other hand, its permanent magnet belongs to oscillator, is easy to suffer in vibration broken bad.
Summary of the invention
In order to the leakage field overcoming existing vibration energy harvesting mode is high, energy conversion rate is low and device uses unstable deficiency, the invention provides that a kind of leakage field is less, energy conversion rate is higher, permanent magnet is fixed, be rolling friction, the rolling vibrator linear vibration energy collecting device that has good stability in movement of pendulum.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of rolling vibrator linear vibration energy collecting device, comprise shell, described energy collecting device also comprises the permanent magnet, end yoke, coil brace, front and back yoke and the left and right yoke that are positioned at shell
Described permanent magnet has N pole and S pole, described permanent magnet there is yoke at the bottom of two, yoke of each end there are two coil base of laying coil brace, described coil base is laid four coil braces, the extremely corresponding end yoke of N is for placing left coil support and rear coil brace, the extremely corresponding end yoke of S is for placing right coil brace and front coil brace, and four coil braces are identical;
Described coil brace is wound around induction coil, induction coil serial connection on each coil brace, four coil braces are provided with the yoke base laying four yokes, being placed in, left coil support is left yoke, being placed in, right coil brace is right yoke, being placed in, front coil brace is front yoke, being placed in, rear coil brace is rear magnetic yoke, left yoke is staggered relatively and identical with right yoke, front yoke is staggered relatively with rear magnetic yoke and identical, every sheet yoke there is tooth, identical with the width of tooth top at the bottom of tooth, and it is left, right yoke and front, tooth on rear magnetic yoke is interspersed, arrange spherical oscillator in the cavity that front and back yoke and left and right yoke surround, be all connected with yoke above each yoke.
Further, above described yoke be elastic washer.
Described enclosure has four guide rails, described guide rail is used for the circumferential position of fixing yoke, coil brace and end yoke, the namely gap of each yoke between guide rail, the gap of each coil brace between guide rail, the arc surface of two end yokes has groove be just used on the just right guide rail of embedding two; Article four, place spherical oscillator between guide rail, oscillator and guide rail Structure deformation.
Have top cover above described shell, top cover is that non-magnetic material is made, and has external screw thread, has external screw thread inside top cover, be fixed on shell by threaded engagement top cover outside cover top portion, and elastic washer of helping get over a shock.
Technical conceive of the present invention is: in the present invention under effect of vibration, oscillator rolls on housing slide, and yoke and oscillator generation relative motion, coil flux size constantly changes, and coil just can produce induced voltage.For illustrating that it changes, consider two kinds of situations below:
1) oscillator is along in guide rail vibration and rolling process, the surface of spherical oscillator have all the time a great circle and guide pass tangent.When this great circle and left and right yoke tooth top meta just pair time, the magnetic line of force is sent by permanent magnet N pole, successively through end yoke, left coil support, left yoke, air gap, spherical oscillator, air gap, right yoke, right coil brace, get back to permanent magnet S pole, form closed magnetic circuit.Under this situation, in the coil on left and right coil brace, magnetic flux reaches maximum, and in coil in forward and backward yoke, magnetic flux is 0.
2) when spherical oscillator moves upward, the surface of spherical oscillator and the tangent great circle of guide pass and front and back yoke just pair time.The magnetic line of force is sent by permanent magnet N, successively through coil brace later, rear magnetic yoke, air gap, spherical oscillator, air gap, front yoke, after coil brace get back to permanent magnet S pole, form closed magnetic circuit.In this case, in the coil in forward and backward yoke, magnetic flux reaches maximum, and in coil in left and right yoke, magnetic flux is reduced to 0 by original maximum.
Above-mentioned analysis shows, in spherical oscillator rolling process, in each opposing yoke coil, magnetic flux constantly changes, and its rule is that in the coil in forward and backward yoke, magnetic flux equal and opposite in direction direction is contrary; In coil in left and right yoke, magnetic flux equal and opposite in direction direction is contrary; In coil in coil in forward and backward yoke in the absolute value of magnetic flux and left and right yoke, the absolute value sum of magnetic flux is constant, presents that forward and backward length is then left and right to disappear and the left and right length then forward and backward relation disappeared.Therefore, reasonably series connection 4 coils can make the induced electromotive force of each coil superpose, and such as set the top of each coil as forward, then by left coil, and oppositely coil after serial connection, the oppositely right coil of serial connection, in the same way coil before serial connection.
Investigate yoke to the axial force of oscillator, about when oscillator departs from left and right yoke tooth top gradually, yoke is tended to be retracted to the axial component that oscillator produces magnetic force, but now because front and back yoke also produces the attraction magnetic force to oscillator, due to symmetry, this magnetic force axial component balances with left and right yoke axial component in theory, therefore eliminates positioned magnetic from principle.
Meanwhile, also need to investigate the orientation problem caused by the frictional force in magnetic force generation movement of pendulum.Because left and right yoke is symmetrical in the present invention, front and back yoke is symmetrical, therefore the radial magnetic force on oscillator can balance in theory mutually, but still exists to a certain extent due to the radial total magnetic force of the reasons such as mismachining tolerance.By the skew of guide rail on shell restriction oscillator position diametrically in device, limit the increase of radial total magnetic force; Recycling rolling oscillator, reduces friction, eliminates radial total magnetic force further by the detent force caused that rubs, improves movement of pendulum flexibility.
Beneficial effect of the present invention: the utilance that improve magnetic circuit, improves coil utilization rate, improves the useful life of efficiency of energy collection and equipment; Employ symmetrical structure in structural design, adopt spherical oscillator simultaneously, eliminate detent force to greatest extent, make oscillator can free movement; Permanent magnet is fixed, be rolling friction in movement of pendulum, coefficient of friction is less.
Accompanying drawing explanation
Fig. 1 is the cut-away view of rolling vibrator linear vibration energy collecting device.
Fig. 2 is the schematic diagram of rolling vibrator linear vibration energy collecting device (without shell).
Fig. 3 is the outside drawing of rolling vibrator linear vibration energy collecting device.
Fig. 4 is the schematic diagram of end yoke.
Fig. 5 is the schematic diagram of coil brace.
Fig. 6 is the schematic diagram of front and back yoke.
Fig. 7 is the schematic diagram of shell.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1 ~ Fig. 7, a kind of rolling vibrator linear vibration energy collecting device, comprises shell 11, and described energy collecting device also comprises the permanent magnet 1, end yoke 2, coil brace 3, front and back yoke 5 and the left and right yoke 7 that are positioned at shell;
Described permanent magnet 1 has N pole and S pole, described permanent magnet 1 there is yoke 2 at the bottom of two, yoke of each end 2 there are two coil base of laying coil brace, described coil base is laid four coil braces 3, the extremely corresponding end yoke of N is for placing left coil support and rear coil brace, the extremely corresponding end yoke of S is for placing right coil brace and front coil brace, and four coil braces 3 are identical;
Described coil brace 3 is wound around induction coil 4, induction coil serial connection on each coil brace, four coil braces are provided with the yoke base laying four yokes, being placed in, left coil support is left yoke, being placed in, right coil brace is right yoke, being placed in, front coil brace is front yoke, being placed in, rear coil brace is rear magnetic yoke, left yoke is staggered relatively and identical with right yoke, front yoke is staggered relatively with rear magnetic yoke and identical, every sheet yoke there is tooth, identical with the width of tooth top at the bottom of tooth, and it is left, right yoke and front, tooth on rear magnetic yoke is interspersed, arrange spherical oscillator 6 in the cavity that front and back yoke 5 and left and right yoke 7 surround, be all connected with yoke 8 above each yoke.
Further, be elastic washer 9 above described yoke 8.
There are four guide rails described shell 11 inside, described guide rail is used for the circumferential position of fixing yoke, coil brace and end yoke, the namely gap of each yoke between guide rail, the gap of each coil brace between guide rail, the arc surface of two end yokes has groove be just used on the just right guide rail of embedding two; Article four, place spherical oscillator between guide rail, oscillator and guide rail Structure deformation.
Have top cover 10 above described shell 11, top cover 10 is made for non-magnetic material, has external screw thread, has external screw thread inside top cover, be fixed on shell by threaded engagement top cover outside cover top portion, and elastic washer of helping get over a shock.
Described permanent magnet 1 is rectangular structure, N pole, the left side and S pole, the right.Described permanent magnet 1 is that ferrite permanent-magnet materials or rare earth permanent-magnetic material are made.
Yoke of the described end 2 totally two pieces, N pole or the S of its lower part and permanent magnet 1 are extremely connected, and can be stuck on permanent magnet 1, and end yoke upper part exists groove for laying coil brace 3, and outer arc face is fluted, can embed in the guide rail on shell 11.
The lower part of described coil brace 3 is connected with end yoke 2, and can be stuck in end yoke 2, and the mid portion of described coil brace 3 is cylinder, for placing coil 4.Also there is groove for laying forward and backward yoke 5 and left and right yoke 7 in the upper part of described coil brace 3.
Described coil 4, by being that enamel covered wire coiling forms, is around in the mid portion of coil brace 3, totally 4 coils.
Described forward and backward yoke 5 and left and right yoke 7 are placed on coil brace 3 respectively, coil brace 3 have the groove laying yoke, and circumference is located by the guide rail on shell 11.
Described yoke 8 and forward and backward yoke 5, left and right yoke 7 and shell closely can connect together and make total keep stable.
Described spherical oscillator 6 is ferromagnetic material, and shape is that spherical being convenient to is rolled on the guide rail of shell 11.
Described elastic washer 9 is placed between yoke 8 and top cover 10.
Described shell 11 can load whole device, and there are four convex guide its side, is convenient to fixing forward and backward yoke 5, left and right yoke 7 and yoke 8.
Closed magnetic circuit can be formed in the present invention.Under extraneous effect of vibration, spherical oscillator 6 constantly rolls, and when oscillator rolls on different yoke loop, the magnetic flux of each magnetic circuit is changed, the magnetic flux that coil can sense constantly changes, and forms alternating current.By wire, four coils 4 are connected in series according to certain mode, then lead to charge in batteries with store electrical energy by wire.Just higher alternating electromotive force can be produced when the number of turn of coil is larger.The utilance of visible device to magnetic circuit and coil is higher, and vibrational energy transfer ratio is high and equipment can the generating of continuous and effective.
The magnetic line of force that permanent magnet in the present invention sends, can form closed-loop path, the utilance of device to magnet is higher.Its advantage: one is that structure is simple, and each part manufactures more convenient; Two is that design comparison is reasonable, installs more convenient, and three is that the utilance of oscillator vibration is high, raises the efficiency; Four is structural design is focused on eliminate detent force, uses spherical oscillator can ensure the free movement of oscillator.
Claims (4)
1. a rolling vibrator linear vibration energy collecting device, comprises shell, it is characterized in that: described energy collecting device also comprises the permanent magnet, end yoke, coil brace, front and back yoke and the left and right yoke that are positioned at shell;
Described permanent magnet has N pole and S pole, described permanent magnet there is yoke at the bottom of two, yoke of each end there are two coil base of laying coil brace, described coil base is laid four coil braces, the extremely corresponding end yoke of N is for placing left coil support and rear coil brace, the extremely corresponding end yoke of S is for placing right coil brace and front coil brace, and four coil braces are identical;
Described coil brace is wound around induction coil, induction coil serial connection on each coil brace, four coil braces are provided with the yoke base laying four yokes, being placed in, left coil support is left yoke, being placed in, right coil brace is right yoke, being placed in, front coil brace is front yoke, being placed in, rear coil brace is rear magnetic yoke, left yoke is staggered relatively and identical with right yoke, front yoke is staggered relatively with rear magnetic yoke and identical, every sheet yoke there is tooth, identical with the width of tooth top at the bottom of tooth, and it is left, right yoke and front, tooth on rear magnetic yoke is interspersed, arrange spherical oscillator in the cavity that front and back yoke and left and right yoke surround, be all connected with yoke above each yoke.
2. rolling vibrator linear vibration energy collecting device as claimed in claim 1, is characterized in that: be elastic washer above described yoke.
3. rolling vibrator linear vibration energy collecting device as claimed in claim 1 or 2, it is characterized in that: described enclosure has four guide rails, described guide rail is used for the circumferential position of fixing yoke, coil brace and end yoke, the namely gap of each yoke between guide rail, the gap of each coil brace between guide rail, the arc surface of two end yokes has groove be just used on the just right guide rail of embedding two; Article four, place spherical oscillator between guide rail, oscillator and guide rail Structure deformation.
4. rolling vibrator linear vibration energy collecting device as claimed in claim 2, it is characterized in that: have top cover above described shell, top cover is that non-magnetic material is made, external screw thread is had outside cover top portion, there is external screw thread inside top cover, be fixed on shell by threaded engagement top cover, and elastic washer of helping get over a shock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510246013.1A CN104883026B (en) | 2015-05-14 | 2015-05-14 | Roll vibrator linear vibration energy collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510246013.1A CN104883026B (en) | 2015-05-14 | 2015-05-14 | Roll vibrator linear vibration energy collecting device |
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| CN104883026A true CN104883026A (en) | 2015-09-02 |
| CN104883026B CN104883026B (en) | 2017-08-25 |
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Cited By (6)
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| CN105591516A (en) * | 2015-09-18 | 2016-05-18 | 王宁宁 | Spontaneous power generation device based on vibration mechanical energy |
| CN106602835A (en) * | 2016-12-28 | 2017-04-26 | 湖南大学 | Two-degree-of-freedom magnetic levitation vibration energy harvester and manufacturing method thereof |
| CN106787078A (en) * | 2017-02-21 | 2017-05-31 | 太原理工大学 | A kind of oscillatory type generating mobile phone power bank |
| CN108173406A (en) * | 2017-12-29 | 2018-06-15 | 浙江工业大学 | Closed magnetic circuit footwear carry out energy collecting device |
| CN108631537A (en) * | 2018-02-27 | 2018-10-09 | 浙江工业大学 | Free end magnetic circuit adjusts cantilever beam energy gathering apparatus |
| CN114513104A (en) * | 2022-01-24 | 2022-05-17 | 浙江大学 | Rolling type vibration energy collector |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105591516A (en) * | 2015-09-18 | 2016-05-18 | 王宁宁 | Spontaneous power generation device based on vibration mechanical energy |
| CN106602835A (en) * | 2016-12-28 | 2017-04-26 | 湖南大学 | Two-degree-of-freedom magnetic levitation vibration energy harvester and manufacturing method thereof |
| CN106787078A (en) * | 2017-02-21 | 2017-05-31 | 太原理工大学 | A kind of oscillatory type generating mobile phone power bank |
| CN108173406A (en) * | 2017-12-29 | 2018-06-15 | 浙江工业大学 | Closed magnetic circuit footwear carry out energy collecting device |
| CN108173406B (en) * | 2017-12-29 | 2023-11-28 | 浙江工业大学 | Closed magnetic circuit shoe energy collecting device |
| CN108631537A (en) * | 2018-02-27 | 2018-10-09 | 浙江工业大学 | Free end magnetic circuit adjusts cantilever beam energy gathering apparatus |
| CN108631537B (en) * | 2018-02-27 | 2023-11-28 | 浙江工业大学 | Cantilever beam vibration energy collecting device with free end magnetic circuit adjusting function |
| CN114513104A (en) * | 2022-01-24 | 2022-05-17 | 浙江大学 | Rolling type vibration energy collector |
| CN114513104B (en) * | 2022-01-24 | 2023-12-29 | 浙江大学 | Rolling type vibration energy collector |
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