CN115483845A - Arrayed electromagnetic-friction composite vibration energy collecting device - Google Patents
Arrayed electromagnetic-friction composite vibration energy collecting device Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
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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
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Abstract
The invention discloses an arrayed electromagnetic-friction composite vibration energy collecting device, which comprises: a housing; the vibration energy collecting mechanism comprises a plurality of vibration energy collecting units which are arrayed in the shell, and each vibration energy collecting unit comprises a spring vibration pickup unit, an electromagnetic power generation unit and a friction power generation unit; the spring vibration pickup unit comprises a vibration pickup body and a plurality of springs, wherein one end of each spring is connected to the outer surface of the vibration pickup body, and the other end of each spring is connected to the inner surface of the shell; the electromagnetic power generation unit comprises a magnet unit and a coil, the magnet unit is arranged in the vibration pickup body and comprises two magnets which are oppositely arranged along the vertical direction, the magnetic poles of the two magnets repel each other, and the coil is arranged outside the vibration pickup body in a surrounding manner and is connected to the inner surface of the shell; the friction generating unit is connected to the outer surface of the vibration pick-up body. The device can convert the vibration excitation in any direction from the outside into electric energy for output; introducing an electromagnetic-friction combined type vibration energy collecting structure; and the array design widens the working frequency band of the device.
Description
Technical Field
The invention relates to the technical field of energy collection, in particular to an arrayed electromagnetic-friction composite vibration energy collecting device.
Background
As the introduction is opened in the era of everything interconnection, the number of various sensors for interactive communication is rapidly increasing. As a life pulse of a sensing system, reliable energy supply is a key factor of an interactive communication network, however, most wireless sensing network nodes still adopt batteries for power supply at present. On one hand, the limited service life of the battery provides a huge challenge for battery replacement or charging of massive wireless sensing network nodes; on the other hand, chemical energy batteries are not only difficult to withstand harsh environments such as high and low temperatures, but also cause environmental pollution. Therefore, the power supply problem of the wireless sensing network node becomes a bottleneck restricting the construction of the internet of things. The environmental vibration energy is a renewable clean energy with abundant reserves and wide distribution, and mechanical energy in the environment is converted into electric energy through an energy acquisition technology to supply power to the wireless sensing network node, so that the method is an effective solution for breaking the limitation of the traditional power supply mode.
Vibration energy harvesting techniques utilize vibration energy harvesters to convert mechanical vibrational energy in the environment into electrical energy. Currently, several electromechanical transduction mechanisms include piezoelectric effects, electromagnetic induction, and triboelectric effects. Vibration energy harvesters designed using the above electromechanical transduction mechanisms are commonly referred to as piezoelectric, electromagnetic and triboelectric vibration energy harvesters. The piezoelectric type vibration energy collector generates electric energy by utilizing the direct piezoelectric effect of the piezoelectric material, can generate higher output power, but is low in toughness and easy to break. The electromagnetic vibration energy harvester operates based on faraday's law of electromagnetic induction, and the magnetic flux in the coil changes to produce an induced electromotive force. The electromagnetic energy collection technology is mature, and the application in a large-size system is realized at present, but the performance of the magnet is limited by space and vibration amplitude, so that the output of the device is relatively small and the integration level is not high. The triboelectric vibration energy collector works based on the phenomena of triboelectrification and electrostatic induction, and the triboelectric technology utilizes the difference of electron gaining and losing capacities of different materials to form charge transfer in the contact friction process to generate potential difference, so that the triboelectric vibration energy collector has the characteristics of low output current and high voltage. Energy collectors with a single conversion mechanism often suffer from poor stability or low energy collection efficiency. The emerging electromagnetic-friction hybrid energy harvesting technology in recent years has proven to be an effective way to achieve efficient harvesting and conversion of vibrational energy. The friction nano-generators (TENGs) have higher output voltage, but the output current is only microampere level, while the output current of the electromagnetic generators (EMGs) can reach milliampere level, and the combination of the two can meet the requirement of higher energy conversion.
Although the technology of vibration energy harvesting based on electromagnetic-friction hybrid has been advanced in some stages in recent years, the engineering application still faces many challenges: (1) The existing energy collecting device has better output only in a single frequency band and regular vibration environment, while random and irregular environment vibration is often lower in output, so that efficient acquisition and conversion of vibration energy in different frequency bands and different directions are difficult to realize; (2) Most energy collecting devices adopt a sliding structure with higher friction resistance and lower sensitivity, and have poor response effect on low-frequency weak environment vibration; how to ensure that the energy collector has wider energy harvesting freedom degree and wider response frequency band under the condition of higher power density output is a technical problem to be solved urgently at present.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide an arrayed electromagnetic-friction composite vibration energy collecting device.
In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:
an arrayed electromagnetic-friction composite vibrational energy harvesting device comprising:
a housing;
the vibration energy collecting mechanism comprises a plurality of vibration energy collecting units which are arrayed in the shell, and each vibration energy collecting unit comprises a spring vibration pickup unit, an electromagnetic power generation unit and a friction power generation unit;
the spring vibration pickup unit comprises a vibration pickup body and a plurality of springs, one end of each spring is connected to the outer surface of the vibration pickup body, and the other end of each spring is connected to the inner surface of the shell;
the electromagnetic power generation unit comprises a magnet unit and a coil, the magnet unit is arranged in the vibration pick-up body and comprises two magnets which are oppositely arranged along the vertical direction, the magnetic poles of the two magnets repel each other, and the coil is arranged around the outside of the vibration pick-up body and connected to the inner surface of the shell;
the friction power generation unit is connected to the outer surface of the vibration pickup body.
As a further improvement of the invention, the vibration pick-up body comprises two vibration pick-up bodies spliced along the vertical direction, and the two magnets are respectively arranged in the two vibration pick-up bodies.
As a further improvement of the invention, the vibration pickup body comprises a horizontal plane, two first side surfaces which are oppositely arranged at the left and the right, and two second side surfaces which are oppositely arranged at the front and the back, wherein the second side surfaces comprise a first inclined surface and a vertical surface connected with the first inclined surface.
As a further improvement of the present invention, a second inclined surface is provided at a position opposite to the first inclined surface on the inner surface of the housing, the second inclined surface is arranged in parallel with the first inclined surface, one end of the spring is connected to the first inclined surface, and the other end of the spring is connected to the second inclined surface.
As a further improvement of the present invention, the angle between the first inclined surface and the horizontal plane is 45 °.
As a further improvement of the invention, the included angle between the center lines of the adjacent springs of the spring vibration pickup unit is 90 degrees.
As a further improvement of the invention, the magnet is rectangular.
As a further improvement of the invention, the two first side surfaces and the two vertical surfaces of the two vibration pickup bodies are respectively spliced into a third side surface and a fourth side surface, and the friction power generation unit is connected to the horizontal surface, the third side surface and the fourth side surface.
As a further improvement of the present invention, the friction power generation unit includes a plurality of nano friction power generators, each of the nano friction power generators includes a paper folding structure, and a plurality of first friction materials and a plurality of second friction materials disposed on the paper folding structure, and the first friction materials and the second friction materials are disposed opposite to each other.
As a further improvement of the invention, one end of the paper folding structure is connected to the outer surface of the vibration pick-up body, and a gap is formed between the other end of the paper folding structure and the inner surface of the shell.
The beneficial effects of the invention are:
(1) The spring vibration pickup unit of the device is a four-spring vibration pickup unit, and four springs are distributed in four directions of a vibration pickup body. The spring vibration pickup unit has multi-degree-of-freedom multi-mode vibration characteristics, can convert external multi-direction multi-frequency-band vibration energy into motion of a vibration pickup body in all directions to form a multi-degree-of-freedom vibration energy collecting device, collects more energy than an energy collecting device with a single degree of freedom or a plurality of degrees of freedom, and improves the capture efficiency of the device on external energy.
(2) When the vibration pickup body responds to external vibration energy and moves in the shell, the position change of the magnet in the vibration pickup body causes the magnetic flux in the coil to change to generate induced electromotive force, and electromagnetic power generation is completed. A nano friction generator is introduced in multiple directions of the vibration pick-up body, and vibration excitation in any direction in the external environment can be converted into the frictional electricity output of the vibration pick-up body to the paper folding structure in each direction. The friction power generation unit can be used for supplementing energy when the electromagnetic power generation efficiency is low due to insufficient motion amplitude of the vibration pickup body. Therefore, the vibration energy collecting device can convert the vibration energy in any direction into electric energy to be output by combining the electromagnetic power generation unit and the friction power generation unit, and the energy collecting efficiency is improved.
(3) The vibration energy collecting device adopts an arrayed design, the elastic coefficient of the spring and the quality of the vibration pick-up body can be adjusted, the resonant frequency of the vibration pick-up unit of the spring is changed, the vibration energy of different external frequencies is matched, the frequency expanding effect under a multi-frequency vibration environment is realized, the working frequency band of the energy collecting device is widened, and the collection efficiency of the vibration energy in the environment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is an interior side view of the preferred embodiment of the present invention;
FIG. 3 is a multimodal schematic of a preferred embodiment of the invention;
FIG. 4 is a schematic structural diagram of the electromagnetic generating unit and the vibration pick-up body according to the preferred embodiment of the present invention;
FIG. 5 is an exploded view of the magnet unit and the vibration pick-up body according to the preferred embodiment of the present invention;
FIG. 6 is a schematic diagram of the structure of the friction power generating unit and the vibration pick-up body in cooperation according to the preferred embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a nano-friction generator according to a preferred embodiment of the present invention;
fig. 8 is a diagram illustrating a compression and tension state of the nano-friction generator according to the preferred embodiment of the present invention;
FIG. 9 is a schematic diagram of the operation of the rice friction generator of the preferred embodiment of the present invention;
FIG. 10 is a schematic diagram of an arrayed frequency tunable spring vibration pickup unit according to a preferred embodiment of the present invention;
in the figure: 1. the vibration energy collecting device comprises a shell, 11, an outer shell, 12, a support lug, 121, a mounting hole, 13, a second inclined surface, 2, a vibration energy collecting unit, 3, a spring vibration pickup unit, 31, a vibration pickup body, 311, a vibration pickup body, 3111, a horizontal surface, 3112, a first side surface, 3113, a first inclined surface, 3114, a vertical surface, 3115, a third side surface, 3116, a fourth side surface, 32, a spring, 4, an electromagnetic power generation unit, 41, a magnet unit, 411, a magnet, 42, a coil, 5, a friction power generation unit, 51, a nanometer friction power generator, 511, a paper folding structure, 512, a first friction material, 513 and a second friction material.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, an embodiment of the present application discloses an arrayed electromagnetic-friction composite vibration energy collecting device, including: a housing 1; the vibration energy collecting mechanism comprises a plurality of vibration energy collecting units 2, the vibration energy collecting units 2 are arrayed in the shell 1, and each vibration energy collecting unit 2 comprises a spring vibration pickup unit 3, an electromagnetic power generation unit 4 and a friction power generation unit 5; the spring vibration pickup unit 3 comprises a vibration pickup body 31 and a plurality of springs 32, one end of each spring 32 is connected to the outer surface of the vibration pickup body 31, and the other end is connected to the inner surface of the housing 1; the electromagnetic generating unit 4 comprises a magnet unit 41 and a coil 42, the magnet unit 41 is arranged in the vibration pick-up body 31, the magnet unit 41 comprises two magnets 411 which are oppositely arranged along the vertical direction, the magnetic poles of the two magnets 411 repel each other, and the coil 42 is arranged around the vibration pick-up body 31 and connected to the inner surface of the shell 1; the friction power generating unit 5 is attached to the outer surface of the vibration pickup body 31. When the shell 1 is excited by external vibration, the spring vibration pickup unit 3 moves in the shell 1 under the action of gravity and inertia force, the spring vibration pickup unit 3 has a multi-mode characteristic, excitation in any direction can be converted into movement of the vibration pickup body 31, so that the vibration pickup body 31 drives two magnets 411 in the vibration pickup body to move in the same direction, and magnetic flux in the coil 42 is changed, thereby generating induced electromotive force and completing electromagnetic power generation; the friction power generation is realized by the friction power generation unit 5. The magnetic poles of the magnets 411 are in the vertical direction, and the two magnets 411 are arranged in a mode that the magnetic poles repel each other so as to improve the electromagnetic power generation efficiency. The device combines electromagnetic power generation and friction power generation, and converts vibration energy in the external environment into electric energy more efficiently.
In this embodiment, the housing 1 includes two housing bodies 11 symmetrically arranged along the vertical direction, the outer surface of each housing body 11 is provided with a plurality of support lugs 12, each support lug 12 is provided with a mounting hole 121, the stud penetrates through the mounting holes 121 of the two housing bodies 11, and the stud is locked and fixed by a screw. The vibration energy collecting mechanism therein is protected by the casing 1 and vibration energy from the outside is transmitted.
Referring to fig. 2 and 4, the vibration pickup body 31 includes two vibration pickup bodies 311 spliced in a vertical direction, and two magnets 411 are respectively disposed in the two vibration pickup bodies 311. The vibration pick-up body 31 is assembled by splicing, and the two vibration pick-up bodies 311 can be separated according to the assembly requirement, so that the magnet 411 can be placed or taken out conveniently.
Specifically, the vibration pickup body 311 includes a horizontal surface 3111, two first side surfaces 3112 disposed opposite to each other at left and right, and two second side surfaces disposed opposite to each other at front and back, and the second side surfaces include a first inclined surface 3113 and a vertical surface 3114 connected to the first inclined surface 3113.
The inner surface of the housing 1 opposite to the first inclined surface 3113 is provided with a second inclined surface 13, the second inclined surface 13 is parallel to the first inclined surface 3113, one end of the spring 32 is connected to the first inclined surface 3113, and the other end is connected to the second inclined surface 13.
In the present embodiment, four springs 32 are provided for each spring vibration pickup unit 3, forming a four-spring vibration pickup unit. The angle between the first inclined surface 3113 and the horizontal plane is 45 °. The angle between the central lines of the adjacent springs 32 of the spring vibration pickup unit 3 is 90 deg..
Fig. 3 (a) -3 (f) are schematic diagrams of the spring vibration pickup unit 3 in multiple modes, and the modes are analyzed by finite element modeling of the spring vibration pickup unit 3 by using COMSOL software. The four-spring vibration pickup unit has multi-freedom-degree multi-mode vibration characteristics, can convert vibration energy of multi-freedom-degree multi-frequency bands into motion of the vibration pickup body, and then is converted into electric energy to be output by the electromagnetic power generation unit 4 and the friction power generation unit 5.
The spring 32 is fixedly connected with the vibration pickup body 31 and the shell 1 through screws or adhesives. Preferably, the coil 42 is embedded in the inner surface of the housing 1 by friction, thereby improving the stability of the coil 42.
Referring to fig. 10, two first side surfaces 3112 and two vertical surfaces 3114 of the two vibration pickup bodies 311 are respectively spliced to form a third side surface 3115 and a fourth side surface 3116, and the friction power generating unit 5 is connected to the horizontal surface 3111, the third side surface 3115 and the fourth side surface 3116.
Referring to fig. 1, 6 and 7, the friction power generation unit 5 includes a plurality of nano friction power generators 51, each of the nano friction power generators 51 includes a paper folding structure 511, a plurality of first friction materials 512 and a plurality of second friction materials 513 disposed on the paper folding structure 511, and the first friction materials 512 and the second friction materials 513 are disposed opposite to each other.
In order to prevent the plurality of nano friction generators 51 from affecting the movement in their respective directions, it is preferable that one end of the paper folding structure 511 is connected to the outer surface of the vibration pickup body 31 and the other end thereof has a gap with the inner surface of the housing 1.
As shown in fig. 8 and 9, the friction power generation unit 5 is schematically constructed and arranged. Preferably, the paper folding structure 511 is made of polyimide Pi, the first friction material 512 is made of FEP with easily available electrons, the second friction material 513 is made of Cu with volatile electrons, and the first friction material 512 and the second friction material 513 are respectively covered on the opposite paper surfaces of the paper folding structure 511. The vibration excitation causes the origami structures 511 of the nanomolar friction generator 51 in the respective directions to squeeze and stretch. The first friction material 512 and the second friction material 513 with different electron gaining and losing capabilities are contacted and separated, and under the combined action of electrostatic induction and friction electrification, electric energy is output to complete friction power generation.
In the embodiment, each nano friction generator 51 is distributed in 6 different directions of the vibration pick-up body 31, and the vibration pick-up body 31 converts multi-direction multi-band vibration energy in the environment into extrusion movement of the paper folding structure 511 in all directions, thereby improving the power generation efficiency.
The resonant frequency of the spring vibration pickup unit 3 is determined by the mass of the vibration pickup body 31 and the elastic coefficient of the spring 32. The larger the mass of the vibration pick-up body 31, the smaller the resonance frequency of the spring vibration pick-up unit 3. The larger the spring constant of the spring 32, the larger the resonance frequency of the spring vibration pickup unit 3. This device is through selecting for use spring 32 of different elastic coefficients, as shown in fig. 10, spring 32 that the elastic coefficient is big is selected for use in fig. 10 (a), make the resonance frequency of spring vibration pickup unit 3 be the high frequency, spring 32 in the elastic coefficient is selected for use in fig. 10 (b), the resonance frequency of making spring vibration pickup unit 3 be the intermediate frequency, spring 32 that the elastic coefficient is little is selected for use in fig. 10 (c), the resonance frequency of making spring vibration pickup unit 3 be the low frequency, realize that the resonance frequency of spring vibration pickup unit 3 distributes from low frequency to high frequency, form the vibration energy collection device of adjustable frequency of arraying, thereby widen the operating band of device, improve energy collection efficiency.
When the invention is used, when the shell 1 is excited by external vibration, the vibration pick-up body 31 moves in the shell 1 under the action of gravity and inertia force, the external multi-directional and multi-band vibration energy is converted into the motion of the vibration pick-up body 31, the magnet 411 in the vibration pick-up body 31 moves to cause the magnetic flux in the coil 42 to change, and the coil 42 generates induced electromotive force due to electromagnetic induction effect to output electric energy. The magnetic flux change caused by moving the magnet 411 in the coil 42 during operation can be maximized by adjusting the relative sizes and positions of the magnet 411 and the coil 42; the wire diameter thickness and the winding turns in the coil 42 are adjusted to complete the optimization of electromagnetic power generation, so that the output effect is better.
The spring vibration pickup unit 3 is a four-spring vibration pickup unit and has multi-degree-of-freedom multi-mode vibration characteristics. The vibration energy of multiple directions and multiple frequency bands can be converted into the motion of the vibration pick-up body 31 in each direction. On the basis of the electromagnetic generating unit 4, a plurality of nano friction generators 51 are introduced and arranged in each direction of the vibration pickup body 31. The excitation in any direction can be converted into the extrusion motion of the paper folding structure 511 in each direction, and due to the triboelectric effect and the electrostatic induction principle, a potential difference is formed between different friction materials, so that the electric energy output is realized. The spring vibration pickup unit 3 is excited by vibration of a certain degree of freedom in a certain frequency band, and when the electromagnetic power generation efficiency is low due to small motion response amplitude, the friction power generation unit 5 has advantages in collecting high-entropy low-frequency energy and can be used as supplement when the output of the electromagnetic power generation unit 4 is insufficient. Therefore, the device adopts the electromagnetic-friction composite ring energy principle, and can convert the vibration energy in the environment into electric energy more efficiently for output.
This device adopts the array design, and inside a plurality of springs pick up unit 3 that shakes can turn into the kinetic energy of picking up the body 31 that shakes with external vibration energy, and when the natural frequency that the spring picked up unit 3 that shakes was the same with external vibration frequency, the generating efficiency is the highest. When the external vibration frequency deviates from the natural frequency of the vibration pickup 31, the power generation efficiency is drastically reduced. Because the natural frequency of the spring vibration pickup unit 3 is affected by the elastic coefficient of the spring 32 and the mass of the vibration pickup body 31, the arrayed design is adopted, and the multiple-frequency vibration energy in the environment is covered by the multiple spring vibration pickup units 3 with different natural frequencies, so that the power generation efficiency of the device is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. An arrayed electromagnetic-frictional composite vibrational energy harvesting apparatus comprising:
a housing;
the vibration energy collecting mechanism comprises a plurality of vibration energy collecting units which are arrayed in the shell, and each vibration energy collecting unit comprises a spring vibration pickup unit, an electromagnetic power generation unit and a friction power generation unit;
the spring vibration pickup unit comprises a vibration pickup body and a plurality of springs, one end of each spring is connected to the outer surface of the vibration pickup body, and the other end of each spring is connected to the inner surface of the shell;
the electromagnetic power generation unit comprises a magnet unit and a coil, the magnet unit is arranged in the vibration pick-up body and comprises two magnets which are oppositely arranged along the vertical direction, the magnetic poles of the two magnets repel each other, and the coil is arranged around the outside of the vibration pick-up body and connected to the inner surface of the shell;
the friction power generation unit is connected to the outer surface of the vibration pickup body.
2. The arrayed electromagnetic-friction composite vibration energy collection device according to claim 1, wherein the vibration pickup body includes two vibration pickup bodies which are vertically spliced, and the two magnets are respectively disposed in the two vibration pickup bodies.
3. The arrayed electromagnetic-friction composite vibrational energy collecting apparatus of claim 2, wherein the vibration pickup body comprises a horizontal surface, two first side surfaces disposed opposite to each other in a left-right direction, and two second side surfaces disposed opposite to each other in a front-rear direction, the second side surfaces comprising a first inclined surface and a vertical surface connected to the first inclined surface.
4. The arrayed electromagnetic-friction composite vibration energy collection device of claim 3, wherein the inner surface of the housing opposite to the first inclined surface is provided with a second inclined surface, the second inclined surface is provided in parallel with the first inclined surface, and one end of the spring is connected to the first inclined surface and the other end is connected to the second inclined surface.
5. The arrayed electromagnetic-frictional composite vibrational energy harvesting device of claim 4, wherein the first slope is at an angle of 45 ° to the horizontal.
6. The arrayed electromagnetic-friction composite vibrational energy harvesting device of claim 4 wherein the angle between the centerlines of adjacent springs of the spring vibration pick-up unit is 90 °.
7. The arrayed electromagnetic-frictional composite vibrational energy harvesting device of claim 1, wherein the magnets are rectangular.
8. The arrayed electromagnetic-friction composite vibration energy collection device according to claim 3, wherein the two first side surfaces and the two vertical surfaces of the two vibration pickup bodies are spliced into a third side surface and a fourth side surface respectively, and the friction power generation unit is connected to the horizontal surface, the third side surface and the fourth side surface.
9. The arrayed electromagnetic-friction composite vibration energy collection device of claim 1 or 8, wherein the friction electricity generation unit comprises a plurality of nano-friction generators, and the nano-friction generators comprise a paper folding structure, a plurality of first friction materials and a plurality of second friction materials, wherein the first friction materials and the second friction materials are arranged opposite to each other.
10. The arrayed electromagnetic-frictional composite vibrational energy harvesting device of claim 9 wherein one end of the paper folding structure is attached to an outer surface of the vibration pick-up body and the other end has a gap with an inner surface of the housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211280413.0A CN115483845A (en) | 2022-10-19 | 2022-10-19 | Arrayed electromagnetic-friction composite vibration energy collecting device |
| PCT/CN2022/128586 WO2024082335A1 (en) | 2022-10-19 | 2022-10-31 | Arrayed electromagnetic-friction composite vibration energy collection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211280413.0A CN115483845A (en) | 2022-10-19 | 2022-10-19 | Arrayed electromagnetic-friction composite vibration energy collecting device |
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| CN115483845A true CN115483845A (en) | 2022-12-16 |
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| CN202211280413.0A Pending CN115483845A (en) | 2022-10-19 | 2022-10-19 | Arrayed electromagnetic-friction composite vibration energy collecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941670B (en) * | 2010-08-17 | 2012-02-29 | 上海交通大学 | Miniature electromagnetic broadband vibration energy harvester based on permanent magnet assay |
| CN102420517A (en) * | 2011-11-29 | 2012-04-18 | 上海交通大学 | Micro electromagnetic vibration energy harvester based on patterned permanent magnet full integration |
| JP2017184444A (en) * | 2016-03-30 | 2017-10-05 | 株式会社ロイヤルパーツ | Vibration generator |
| US10644579B2 (en) * | 2018-08-31 | 2020-05-05 | George Nerubenko | Vibration energy harvesting damper |
| CN111130387A (en) * | 2020-01-15 | 2020-05-08 | 重庆大学 | Asymmetric combined type broadband vibration energy collector |
| CN111564989B (en) * | 2020-06-15 | 2022-10-25 | 河南工业大学 | Piezoelectric-electromagnetic combined vibration energy collector |
| CN111564945B (en) * | 2020-06-15 | 2022-08-02 | 河南工业大学 | Combined type vibration energy collector |
| CN112564541B (en) * | 2020-12-09 | 2021-09-28 | 上海大学 | Electromagnetic friction electric hybrid energy collector for low-frequency motion |
-
2022
- 2022-10-19 CN CN202211280413.0A patent/CN115483845A/en active Pending
- 2022-10-31 WO PCT/CN2022/128586 patent/WO2024082335A1/en unknown
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| Publication number | Publication date |
|---|---|
| WO2024082335A1 (en) | 2024-04-25 |
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