CN106953495B - Magnetic suspension type friction-free vibration energy acquisition device - Google Patents
Magnetic suspension type friction-free vibration energy acquisition device Download PDFInfo
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- CN106953495B CN106953495B CN201710324575.2A CN201710324575A CN106953495B CN 106953495 B CN106953495 B CN 106953495B CN 201710324575 A CN201710324575 A CN 201710324575A CN 106953495 B CN106953495 B CN 106953495B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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Abstract
The invention discloses a magnetic suspension type friction-free vibration energy acquisition device which consists of a shell cavity and a suspension magnet. Wherein, the suspension magneton is in the form of a combined permanent magnet, and the upper surface, the lower surface and the side surfaces of the suspension magneton are provided with magnetic poles; the side surface of the shell cavity is wound with a power generation coil. The magnetic poles on the upper and lower surfaces of the suspension magnetic poles are opposite to the magnetic poles of the fixed magnets on the upper and lower covers of the shell cavity, and the suspension magnetic poles are suspended in the shell cavity according to the principle that the magnetic poles with the same names repel each other. The wall of the shell cavity is embedded with an array type lateral fixed magnet, the magnetic poles of the lateral fixed magnet pointing to the inner surface of the shell cavity are the same as the magnetic poles of the side surfaces of the suspension magnets, and the magnetic poles with the same name repel each other, so that friction between the suspension magnets and the inner surface of the shell cavity is avoided. When the energy collection device is in a vibration environment, the suspended magneton in the energy collection device vibrates relative to the cavity of the shell, and the power generation coil on the cavity of the shell cuts magnetic force lines to generate electromotive force so as to convert mechanical energy into electric energy.
Description
Technical Field
The invention belongs to the field of new energy, and particularly relates to a magnetic suspension type friction-free vibration energy acquisition device.
Technical Field
With the development of technology, new energy devices are being utilized and developed to meet the demands of low-carbon life. In engineering practice and daily life, mechanical vibrations are very common, such as shaking of vehicles, vibration of machine tools and cutters, jolting during walking, and the like. Vibration energy, due to its ubiquitous presence in the surrounding environment, can provide a convenient and sufficient source of energy for the energy harvester. The vibration energy harvester can convert mechanical vibration energy around the system into electrical energy.
According to the physical principle of vibration energy conversion, vibration energy collectors are mainly divided into three forms: electrostatic, piezoelectric, and electromagnetic. The working principle of the electromagnetic vibration energy collector is Faraday's law of electromagnetic induction. The typical electromagnetic vibration energy collector consists of a spring, a permanent magnet and an induction coil, wherein the permanent magnet is connected to the spring and vibrates up and down under the action of an external vibration source, so that magnetic flux in the induction coil continuously changes along with time, induced electromotive force is generated at two ends of the coil, and mechanical vibration energy in the environment is converted into electric energy. In such devices, the spring itself dampens the vibrations, consuming a portion of the vibrational energy, reducing the efficiency of the energy conversion. In addition, magnetic levitation based energy harvester (m.p.s. Santos, et al sci. Rep.6,18579 (2016)), the selected permanent magnets are axially magnetized, and although the use of spring structures is avoided, the magnets rub against the lumen wall during vibration, failing to fully utilize the vibration energy.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a magnetic suspension type friction-free vibration energy acquisition device.
The energy acquisition device comprises a shell cavity and a suspension magnet.
The shell cavity is composed of a cavity 5, an upper cover 2 and a lower cover 6, and forms a closed structure. Wherein, the outer wall of the cavity 5 winds a plurality of strands of copper coils 4; an upper fixed magnet 8 which is magnetized in the radial direction is fixedly arranged on the inner side of the upper cover 2, and a lower fixed magnet 14 which is magnetized in the radial direction is fixedly arranged on the inner side of the lower cover 6. The levitation magnet adopts a combination mode and consists of an upper levitation magnet 9 which is magnetized in the radial direction, a radiation-type magnetized magnet 11 which is magnetized in the radial direction and a lower levitation magnet 13 which is magnetized in the radial direction.
The upper suspension magnet 9, the radiation magnetizing magnet 11 and the lower suspension magnet 13 are assembled and mounted on the magnet fixing block 12; wherein, the radiation magnetizing magnet 11 is sleeved outside the magnet fixing block 12, and the upper suspension magnet 9 and the lower suspension magnet 13 are respectively fixed at two ends of the magnet fixing block 12.
The suspended magnetic particles are suspended in the cavity of the shell by utilizing the principle that the magnetic poles with the same name repel each other. Wherein, the upper fixed magnet 8 and the upper suspension magnet 9 repel each other with the same-name magnetic pole; the lower suspension magnet 13 and the lower fixed magnet 14 repel each other with the same magnetic pole; in order to avoid friction between the suspended magnet and the inner wall of the cavity 5, a lateral fixed magnet 10 and a radiation magnetizing magnet 11 are additionally arranged in the cavity 5 to repel the same-name magnetic poles.
The magnetic suspension type friction-free vibration energy acquisition device has the advantages that:
(1) the principle that permanent magnets repel each other with the same name magnetic poles is utilized to ensure that the same poles of the magnets in the inner cavity of the device are opposite. In particular, the suspended magneton uses the radiation magnetizing magnet to repel the magnetic poles with the same name as the lateral fixed magnet on the cavity wall, and friction with the cavity wall does not occur, so that energy loss is effectively avoided.
(2) The multi-strand copper coil winding is wound on the outer wall of the cavity, and the coil windings are all arranged at the dense positions of magnetic force lines. The idle space of the device is fully and effectively utilized, and the power generation coil is additionally arranged. The device has compact structure and high energy conversion efficiency.
(3) The magnet is installed by adopting fastening bolt connection, so that unreliable factors such as glue adhesion and the like in the prior art are avoided, the possibility that the magnet flies out due to repulsive force is eliminated, and the safety in the use process of the device is ensured.
Drawings
Fig. 1 is an isometric view of the energy harvesting device.
Fig. 2 is a cross-sectional view of the energy harvesting device.
Fig. 3 is a schematic view of the magnetic poles of the fixed magnets on (or under) the energy harvesting device.
Fig. 4 is a schematic view of the lateral fixed magnet poles of the energy harvesting device.
Fig. 5 is a schematic diagram of the energy harvesting device radiating magnetizing magnet poles.
Fig. 6 is a schematic diagram of the pole of the floating magnet on (or under) the energy harvesting device.
Wherein: the device comprises a fastening bolt 1, an upper cover 2, a lateral locking screw 3, a coil 4, a cavity 5, a lower cover 6, a magnet fixing bolt 7, an upper fixing magnet 8, an upper suspension magnet 9, a lateral fixing magnet 10, a radiation magnetizing magnet 11, a magnet fixing block 12, a lower suspension magnet 13 and a lower fixing magnet 14.
Detailed Description
The magnetic suspension type friction-free vibration energy acquisition device consists of a shell cavity and a suspension magnet.
The levitation magnet comprises an upper levitation magnet 9, a radiation magnetizing magnet 11, a magnet fixing block 12 and a lower levitation magnet 13. Wherein the magnet fixing block 12 has a cylindrical structure; the radiation magnetizing magnet 11 is of an annular structure and sleeved on the outer side of the magnet fixing block 12, and the height of the radiation magnetizing magnet 11 is equal to that of the magnet fixing block 12; the upper levitation magnet 9 and the lower levitation magnet 13 are respectively fixed to both ends of the magnet fixing block 12 by the magnet fixing bolts 7 while restricting the movement of the radiation magnetizing magnet 11 with respect to the magnet fixing block 12.
The housing cavity of the energy harvesting device comprises a lateral locking screw 3, a coil 4, a cavity 5, a lateral fixed magnet 10, an upper cover 2, an upper fixed magnet 8, a lower cover 6 and a lower fixed magnet 14. Wherein the cavity 5 is an annular cavity, the outer wall of the cavity is provided with a groove for winding the coil 4, and the wall is provided with a through hole for installing the lateral fixed magnet 10; the coil 4 is wound on the outer side of the cavity 5; the lateral fixing magnet 10 is tightly mounted in the through hole of the cavity wall and is locked by the lateral locking screw 3.
The upper fixed magnet 8 of the energy collecting device is fixedly arranged on the inner side of the upper cover 2 through a magnet fixing bolt 7, and the lower fixed magnet 14 is fixedly arranged on the inner side of the lower cover 6 through the magnet fixing bolt 7.
When the energy acquisition device is installed, the suspension magneton is placed in the inner side cavity of the cavity 5, and the upper cover 2 and the lower cover 6 are fixedly installed at two ends of the cavity 5 through the fastening bolts 1 respectively.
Preferably, the cavity 5, the upper cover 2, the lower cover 6 and the magnet fixing block 12 are made of non-magnetic materials.
Preferably, the radiation magnetizing magnet 11, the upper suspension magnet 9 and the lower suspension magnet 13 are made of neodymium-iron-boron permanent magnet materials, wherein the radiation magnetizing magnet 11 is radiation magnetizing, the inner side of the radiation magnetizing magnet is an S pole, and the outer side of the radiation magnetizing magnet is an N pole; the upper levitation magnet 9 and the lower levitation magnet 13 are axially magnetized. When in installation, the N pole of the upper suspension magnet 9 is upward, and the S pole is downward; the lower levitation magnet 13 has its N pole facing downward and its S pole facing upward. The outside of the suspension magneton of the energy collector is an N pole.
Preferably, the lateral fixed magnet 10 is made of neodymium-iron-boron permanent magnetic material, and the magnetizing direction is axial magnetizing. When the side-mounted magnet is mounted, the N pole of the side-mounted magnet 10 faces the inner side of the cavity 5, and the S pole of the side-mounted magnet 10 faces the outer side of the cavity 5. The lateral fixed magnets 10 are arranged in double rows and are radially arranged along the cavity 5; the number of lateral fixation magnets 10 depends on the diameter of the cavity 5.
Preferably, the upper fixed magnet 8 and the lower fixed magnet 14 are made of neodymium-iron-boron permanent magnetic materials, and the magnetizing direction is axial magnetizing. The N pole of the upper fixed magnet 8 faces downwards and the S pole faces upwards; the lower fixed magnet 14 has its N pole facing upward and its S pole facing downward.
The energy collecting device is internally provided with magnetic poles N-N opposite to each other, the upper fixed magnet 8 and the upper suspension magnet 9 are in magnetic pole repulsion with the same name, and the lower suspension magnet 13 and the lower fixed magnet 14 are in magnetic pole repulsion with the same name; the lateral fixed magnet 10 and the radiation magnetizing magnet 11 are of the same name magnetic pole. The suspension magnet is suspended inside the cavity without any contact.
Preferably, the coil 4 is a copper coil. The idle space of the device is fully and effectively utilized, a plurality of strands of generating coils 4 are additionally arranged, and the coils 4 are arranged at the dense positions of magnetic force lines.
When vibration exists outside, the coil 4 of the energy acquisition device can cut magnetic lines of force formed by the suspended magnetons, and the vibration mechanical energy is converted into electric energy. Wherein, the middle coil is mainly used for cutting magnetic force lines generated by the radiation magnetizing magnet 11; the coils on the upper and lower sides are mainly used for cutting magnetic lines generated by the upper suspension magnet 9 and the lower suspension magnet 13 respectively.
The output voltage of the energy acquisition device meets the following conditions:
wherein N is the number of turns of the coil, phi is the magnetic flux, and t is the time.
The above description is illustrative of the present invention and is not intended to be limiting, and the magnetically levitated friction-free vibration energy harvester can also be implemented by alternative schemes of changing the magnetization direction of the permanent magnet poles. Other modifications and variations readily apparent to those skilled in the art without departing from the basic inventive concepts herein disclosed are deemed to be within the scope of the invention.
Claims (7)
1. The utility model provides a magnetic suspension formula exempts from friction vibration energy collection system which characterized in that: the magnetic suspension type friction-free vibration energy acquisition device comprises two parts, namely a suspension magnet and a shell cavity, wherein the suspension magnet comprises an upper suspension magnet (9), a radiation magnetizing magnet (11), a magnet fixing block (12) and a lower suspension magnet (13), the magnet fixing block (12) is of a cylindrical structure, the radiation magnetizing magnet (11) is of an annular structure and is sleeved on the outer side of the magnet fixing block (12), the height of the radiation magnetizing magnet (11) is equal to that of the magnet fixing block (12), and the upper suspension magnet (9) and the lower suspension magnet (13) are respectively fixed at two ends of the magnet fixing block (12) through magnet fixing bolts (7) and simultaneously limit the movement of the radiation magnetizing magnet (11) relative to the magnet fixing block (12); the shell cavity comprises a lateral locking screw (3), a coil (4), a cavity (5) and a lateral fixing magnet (10), as well as an upper cover (2), an upper fixing magnet (8), a lower cover (6) and a lower fixing magnet (14), wherein the cavity (5) is an annular cavity, a groove for winding the coil (4) is formed in the outer side wall of the cavity, a through hole for installing the lateral fixing magnet (10) is formed in the wall of the cavity, the coil (4) is wound on the outer side of the cavity (5), the lateral fixing magnet (10) is tightly matched and installed in the through hole in the cavity wall and is locked through the lateral locking screw (3), the upper fixing magnet (8) is fixedly arranged on the inner side of the upper cover (2) through a magnet fixing bolt (7), and the lower fixing magnet (14) is fixedly arranged on the inner side of the lower cover (6) through the magnet fixing bolt (7); the suspended magnet is placed in the inner side cavity of the cavity (5), the upper cover (2) and the lower cover (6) are fixedly installed at two ends of the cavity (5) through the fastening bolts (1) respectively, and the magnet on each surface on the outer side of the suspended magnet is in the state of being in the same-name magnetic pole repulsion with the magnet on the opposite surface on the inner side of the shell cavity respectively, so that the suspended magnet is prevented from being in contact with the shell cavity.
2. The magnetic levitation type friction-free vibration energy harvesting device of claim 1, wherein: the radiation magnetizing magnet (11), the upper suspension magnet (9) and the lower suspension magnet (13) are made of neodymium-iron-boron permanent magnet materials, wherein the radiation magnetizing magnet (11) is radiation magnetizing, and the upper suspension magnet (9) and the lower suspension magnet (13) are axially magnetizing.
3. The magnetic levitation type friction-free vibration energy harvesting device of claim 1, wherein: the lateral fixed magnets (10) are made of neodymium-iron-boron permanent magnet materials, and the magnetizing direction is axial magnetizing; the lateral fixed magnets (10) are arranged in double rows and are arranged along the radial direction of the cavity (5), and the number of the lateral fixed magnets (10) is determined according to the diameter of the cavity (5).
4. The magnetic levitation type friction-free vibration energy harvesting device of claim 1, wherein: the upper fixed magnet (8) and the lower fixed magnet (14) are made of neodymium iron boron permanent magnet materials, and the magnetizing direction is axial magnetizing.
5. The magnetic levitation type friction-free vibration energy harvesting device of claim 1, wherein: the magnetic poles N-N or S-S are opposite, the upper fixed magnet (8) and the upper suspension magnet (9) repel each other, and the lower suspension magnet (13) and the lower fixed magnet (14) repel each other; the lateral fixed magnet (10) and the radiation magnetizing magnet (11) repel each other with the same-name magnetic poles, so that the levitation magnet is levitated inside the cavity without any contact.
6. The magnetic levitation type friction-free vibration energy harvesting device of claim 1, wherein: the cavity (5), the upper cover (2), the lower cover (6) and the magnet fixing block (12) are made of non-magnetic materials.
7. The magnetic levitation type friction-free vibration energy harvesting device of claim 1, wherein: the coil (4) is a copper coil, and a plurality of strands of coils (4) are additionally arranged on the outer wall of the cavity (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710324575.2A CN106953495B (en) | 2017-05-10 | 2017-05-10 | Magnetic suspension type friction-free vibration energy acquisition device |
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| CN201710324575.2A CN106953495B (en) | 2017-05-10 | 2017-05-10 | Magnetic suspension type friction-free vibration energy acquisition device |
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| CN108199558A (en) * | 2018-02-06 | 2018-06-22 | 东莞市霸哥减震技术有限公司 | A kind of miniature magnetic suspending power generation device |
| CN108482649B (en) * | 2018-03-01 | 2021-05-25 | 常熟京常智能科技有限公司 | Many rotor formula unmanned aerial vehicle magnetic suspension damping device |
| CN108644292B (en) * | 2018-05-29 | 2020-11-17 | 北京汽车股份有限公司 | Shock absorber assembly and vehicle with same |
| CN111219485A (en) * | 2020-03-09 | 2020-06-02 | 杰锋汽车动力系统股份有限公司 | Parking mechanism locking device |
| CN111396281A (en) * | 2020-04-30 | 2020-07-10 | 厦门奇跃电子科技有限公司 | Control structure of micro-fluidic chip |
| CN114499096B (en) * | 2021-12-01 | 2024-09-27 | 中国船舶重工集团公司第七一九研究所 | Vibration energy capturing device based on mass spring resonance system and design method thereof |
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| JPH0590021A (en) * | 1991-09-27 | 1993-04-09 | Shin Etsu Chem Co Ltd | Magnetic-field generation apparatus for magnetic-levitation |
| US7449803B2 (en) * | 2005-03-21 | 2008-11-11 | Sahyoun Joseph Y | Electromagnetic motor to create a desired low frequency vibration or to cancel an undesired low frequency vibration |
| JP2011166893A (en) * | 2010-02-05 | 2011-08-25 | Onkyo Corp | Oscillating generator |
| CN201608619U (en) * | 2010-02-24 | 2010-10-13 | 金坚 | Vibration type generating set |
| CN207184303U (en) * | 2017-05-10 | 2018-04-03 | 江南大学 | One kind combination magnetic suspension type vibration energy collecting device |
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