WO2020040536A9 - Electric power generation element using triboelectrification - Google Patents

Electric power generation element using triboelectrification Download PDF

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Publication number
WO2020040536A9
WO2020040536A9 PCT/KR2019/010610 KR2019010610W WO2020040536A9 WO 2020040536 A9 WO2020040536 A9 WO 2020040536A9 KR 2019010610 W KR2019010610 W KR 2019010610W WO 2020040536 A9 WO2020040536 A9 WO 2020040536A9
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charging member
charging
permanent magnet
power
substrate
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PCT/KR2019/010610
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French (fr)
Korean (ko)
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WO2020040536A1 (en
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황건태
최종진
윤운하
박동수
임경원
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한국기계연구원
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Publication of WO2020040536A1 publication Critical patent/WO2020040536A1/en
Publication of WO2020040536A9 publication Critical patent/WO2020040536A9/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
    • H02N1/04—Friction generators

Definitions

  • the present invention relates to a power generating device using triboelectric charging, and specifically, a device that generates electric power by being placed by an alternating AC magnetic field using the principle of triboelectric charging in which static electricity is generated by friction between two objects facing each other. It is about.
  • the piezoelectric element essential for power generation using the piezoelectric effect is difficult to commercialize because it takes a lot of time and cost to manufacture and is very expensive.
  • An object of the present invention is to provide a power generating device capable of generating electric power from an alternating magnetic field formed in an alternating current power line.
  • the present invention is to provide a power generation device that can be manufactured inexpensively while having a relatively simple configuration by utilizing the triboelectric charging characteristic.
  • the present invention is to provide a power generation device capable of generating maximum power by utilizing the triboelectric charging characteristics.
  • the inventors of the present invention have paid attention to utilizing triboelectric properties as an effective means of generating electric power under an alternating magnetic field.
  • Two materials that are charged by mutual displacement between two adjacent objects are placed face to face and the materials are mutually displaced using force applied from the outside, so that static electricity generated between the materials is transmitted through a conductor attached to the materials.
  • Research on a triboelectric power generation device that generates power by inducing it to the outside is being conducted.
  • 1 is a diagram showing the principle of power generation by triboelectric charging.
  • the power generating device by triboelectricity shown in FIG. 1 is an initial state separated from each other by attaching a polyimide film and a polymethyl methacrylate (PMMA) film under the brand name of'CAPTON' to a conductor electrode plate and facing them.
  • PMMA polymethyl methacrylate
  • II a negative charge is charged to the polyimide film and a positive charge is charged to the PMMA film by the charging phenomenon, and the two objects start to be separated from each other from the proximity state.
  • a current is generated by the flow of charges through an external conductor to balance the charges, and when the proximity starts again from the separated state (IV) (V), the accumulated charges disappear and Produces a current in the opposite direction.
  • the research on the current generation by triboelectric charging is mainly to place the charging material in an environment where a large external force acts, such as a wearable device, so it is not applicable as a device operating under a very weak magnetic field generated by commercial AC power. Inappropriate.
  • the inventors of the present invention operate by being placed adjacent to a small-sized AC magnetic field formed around a wire through which commercial AC power flows, and generate power of several mW levels suitable for supplying to devices that consume a small level of power such as sensor elements. As a result of continuing research on possible devices, it has come to conceive a power generating device according to the present invention described below.
  • the present invention relates to a power generation device that generates power from a magnetic field formed by an AC power source flowing through a power line,
  • a permanent magnet placed in a magnetic field and receiving a magnetic force whose direction is changed according to an alternating magnetic field;
  • a substrate having one end formed as a free end and the other end formed as a fixed end, a permanent magnet attached to the free end, and having a predetermined elasticity and receiving a bending force by a magnetic force received by the permanent magnet;
  • First and second charging members having surfaces facing each other and having different polarities due to mutual displacement of the facing surfaces; And a frame on which the permanent magnet, the substrate, and the first and second charging members are supported,
  • the first charging member is fixed to the frame and the second charging member is fixed to the substrate. As the substrate vibrates due to the bending force, displacement occurs on the surface facing the first charging member, thereby charging the first and second charging members. It is configured such that electric power is generated by the flow of electric charges between the first and second charging members by a conductive wire connecting the first and second charging members to each other.
  • the permanent magnet is placed in an AC magnetic field formed around a power line through which AC power flows, and the surface of the substrate is placed perpendicular to the AC magnetic field.
  • the permanent magnet applies a vertical load of alternating directions to the substrate by magnetic force of alternating directions, and the free end of the substrate receives a bending load with the fixed end as a support point.
  • the substrate vibrates due to alternating bending loads, and the substrate and the permanent magnet vibrate according to the alternating frequency of the alternating magnetic field, and accordingly, the second charging member fixed to the substrate approaches the first charging member fixed to the frame.
  • a large displacement occurs repeatedly between the surfaces facing each other between the first charging member and the second charging member, which are spaced apart from the contact.
  • the first charging member and the second charging member are connected to an external electronic device and are electrically connected to each other through an external electronic device to generate an alternating current, that is, an alternating current therebetween.
  • the frictionally charged members, permanent magnets, and substrates are materials that can be obtained inexpensively compared to magnetostrictive materials or piezoelectric materials, so that a power generating element can be constructed inexpensively and simply.
  • the power generation device of the present invention can be simply installed and harvest power without installing a branch line on the power line or changing the power line or other surrounding facilities if the power line is located.
  • the power generation device is required for an electronic device that requires power from the power generation device even if the displacement between the two members to be tribologically charged is not large, unlike the power generation device used in a wearable device. It will be able to supply the power that becomes.
  • the direction of the bending force applied by the permanent magnet is alternated according to the alternating magnetic field, so that the deformation of the center portion of the substrate is maximized and the deformation of the free end portion is minimized.
  • the substrate resonates due to the bending force exerted by the permanent magnet, but the center portion in the longitudinal direction is maximally deformed and the deformation at both ends is minimized, so that between the first charging member and the second charging member The mutual displacement of is maximized.
  • the power generating element can obtain the maximum power.
  • the substrate by adjusting any one or more of the thickness and width of the substrate, the length from the fixed end to the position where the permanent magnet is attached, and the elastic modulus and the mass of the permanent magnet according to the frequency of the magnetic field. At, it is possible to generate resonance in which the deformation of the center is maximized and the deformation of the free end is minimized.
  • the maximum power can be obtained by a simple and inexpensive method of adjusting the size, mass, or elastic modulus of the substrate or permanent magnet according to the frequency of the power line at the position where the power generating device of the present invention is disposed.
  • the first charging member is made of a metal thin film that is charged with a positive charge
  • the second charging member is made of a resin panel that is charged with a negative charge
  • the second charging member has electricity on the back surface of the surface facing the first charging member.
  • a thin film made of a conductive material is attached and a conductive wire is connected to the thin film.
  • the first charging member is made of a resin panel that is charged with a negative charge
  • the second charging member is made of a metal thin film that is charged with a positive charge. May be.
  • the first charging member or the second charging member may be made of a panel made of resin that is charged with negative charges, and may be configured such that fine irregularities are formed on a surface facing the first charging member.
  • such fine irregularities may be formed by dissolving the water-soluble powder in water after spraying the water-soluble powder on the surface facing the first charging member. Therefore, a very fine uneven structure can be formed by a very simple method.
  • FIG. 1 is a diagram for explaining a schematic configuration and operation of a power generating element according to a triboelectric charging principle.
  • FIG. 2 is a perspective view showing the configuration of a power generation device according to an embodiment of the present invention.
  • FIG 3 is a view showing a state in which the power generating device according to an embodiment of the present invention operates.
  • FIG. 4 is a diagram showing a principle of generating power in a power generating device according to an embodiment of the present invention.
  • FIG. 5 is a diagram showing a resonance mode of a substrate in a power generating device according to an embodiment and a comparative example of the present invention.
  • 6 and 7 are graphs showing a resonance mode of a substrate and a voltage of power generated accordingly in a power generating device according to a comparative example and an embodiment of the present invention, respectively.
  • FIG. 8 is a view showing a process of forming fine irregularities in the PFA film of the power generating device according to an embodiment of the present invention.
  • FIG. 9 is a graph showing a comparison of a difference between a voltage and a current of power according to the presence or absence of fine irregularities of a PFA film in the power generating device according to an embodiment of the present invention.
  • FIG. 2 schematically shows a configuration of a power generation device according to an embodiment of the present invention, and the configuration of the power generation device will be described with reference to this drawing.
  • the power generating element 10 of this embodiment is a 15 ⁇ m-thick aluminum foil 11 as a first charging member that is charged by contact, and a 50 ⁇ m-thick Perfluoroalkozy alkane (PFA) film 12 as a Teflon resin as a second charging member. ) was prepared.
  • PFA Perfluoroalkozy alkane
  • the PFA film 12 is supported on the substrate 13, the substrate 13 is formed of a panel made of a 300 ⁇ m-thick titanium (Ti) material, and one end of the substrate 13 is attached to a frame (not shown). Is fixed to a fixed end 131 and the other end is a free end 132 that is not fixed to form a cantilever beam as the entire substrate 13.
  • Ti 300 ⁇ m-thick titanium
  • a gold thin film layer 14 having a thickness of 100 nm as a conductive electrode is formed on the back surface of the PFA film 12 by sputtering, and the gold thin film layer 14 and the substrate 13
  • An adhesive layer 15 is provided in between, and the PFA film 12 and the gold thin film layer 14 are fixedly attached to the substrate 13.
  • Neodymium (Nd) magnets each having a mass of 1.5 g as a permanent magnet 16 are fixed to both sides of the substrate at the free end 132 of the substrate 13.
  • Neodymium magnets are a kind of rare earth magnets, and are made by alloying neodymium (Nd), iron (Fe), and boron (B) in a ratio of 2:14:1 by powder metallurgy.
  • Both ends of the aluminum foil 11 are fixed to a frame (not shown), and the PFA film 12 is attached to the substrate 13, and is disposed substantially parallel to each other in a state where no external force is applied.
  • the aluminum foil 11 and the PFA film 12, the gold thin film layer 14, and the adhesive layer 15 are all formed to have a width of 20 mm and a length of 50 mm, and the substrate 13 is 20 mm wide and 80 mm long. It is formed, and the PFA film 12, the gold thin film layer 14, and the adhesive layer 15 are not attached to both ends 131 and 132 in the longitudinal direction.
  • each thin film or film as defined above, and the mass of the permanent magnet are numerical values set to satisfy the resonance conditions defined in this embodiment to be described later when the permanent magnet 16 is placed under an alternating magnetic field of 143.2 Hz.
  • an aluminum foil 11 and a PFA film 12 are used as the first charging member and the second charging member, respectively, which are charged by mutual displacement, but the aluminum foil and Teflon resin are available inexpensively. Since it is a material, the cost of power generation devices using these materials can be greatly reduced, and as will be described later, Teflon resin has the advantage of increasing the power generated by the power generation device by expanding its charging surface area through simple processing. .
  • the present invention is not limited to these materials, and as a material that is charged with an anode, a thin metal film or panel other than aluminum, or a panel made of a material such as glass, mica, silica, etc. may be used, and as a cathode.
  • a resin material such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), or PTEE (polytetrafluorethylene) may be used.
  • the gold thin film layer 14 is formed on the PFA film 12 in the present embodiment, a thin film of a material having electrical conductivity other than gold may be formed.
  • the power generating element 10 having the above configuration is operated while being placed in the state schematically shown in FIG. 3.
  • the permanent magnet 16 is placed in an alternating magnetic field.
  • the power generating device 10 of this embodiment is disposed around the power line 20 through which an AC current flows.
  • the magnetic field B is disposed so that the direction of the magnetic field B is perpendicular to the plane of the surface of the substrate 13.
  • the permanent magnet 16 is advantageously disposed as close to the power line 20 as possible within a range without interference with the power line 20.
  • the permanent magnet 16 receives magnetic force of alternating directions by the alternating magnetic field, and the permanent magnet 16 is attached to the free end of the substrate 13 constituting the cantilever, so the substrate 13 Is subjected to a bending load acting in a direction perpendicular to the plane of the surface at its free end 132, and the bending load alternates in direction according to the fluctuation of the alternating magnetic field.
  • the substrate 13 vibrates by an alternating load applied by the permanent magnet 16, which is a mass attached to the free end 132 with the fixed end 131 as a point.
  • the PFA film 12 as the second charging member attached to the substrate 13 moves up and down, and is close to the aluminum foil 11 as the first charging member fixed at a certain position. And it repeats the movement that is spaced apart.
  • AC power is generated by the proximity and separation of the aluminum foil 11 and the PFA film 12, and the principle is as described with reference to FIG. 1, and the principle of power generation is schematically illustrated in FIG. .
  • AC current is also generated according to the principle of current generation by triboelectric charging.
  • the aluminum foil 11 and the PFA film 12 are respectively connected to conductors 17 and 18, and the conductors 17 and 18 are connected to the sensor element 30 to supply AC current. Is done.
  • the conductive wire 17 is directly connected to the aluminum foil 11 and the conductive wire 18 is connected to the PFA film 12 through a gold thin film layer 14 to transfer electric charges between the aluminum foil 11 and the PFA film 12. It becomes a path, that is, a path through which current flows.
  • the sensor element 30 is operated by electric power generated by the power generating element 10 of the present embodiment, and a rectifier module and a secondary battery or capacitor that rectify the AC current from the power generating element 10 according to its use. Equipped with a storage device such as, the power generated by the power generating device 10 is stored and converted into voltage and current required by the sensor device 30 to be used.
  • the sensor element 30 is equipped with a wireless communication means such as a Wi-Fi module and cannot be accessed by humans, but is provided at a location where the power line 20 is disposed, so that it operates using an alternating current from the power generating element 10 to be operated at a remote location.
  • the measured information is transmitted to an information device such as an existing server or an administrator's smartphone 40.
  • the power generating element 10 of the present embodiment was placed on a Helmholtz coil to apply an alternating magnetic field, and the vibration mode of the substrate and the voltage of the generated current were measured.
  • the Helmholtz coil has a diameter of 140 mm and an alternating magnetic field having a magnetic strength of 7 Oe is applied, and the permanent magnet 10 of the power generating element is placed in the alternating magnetic field of the Helmholtz coil, so that the alternating frequency of the alternating magnetic field is zero. While increasing from, the vibration mode of the substrate 13 and the voltage of the power generated by the power generating element were measured.
  • the resonance state appears in three modes as the frequency increases, and it behaves in a form that rotates around the fixed end 131 of the substrate, as shown in (a), sequentially from low frequency as the frequency increases.
  • the first bending resonance mode in which the free end 131 to which the permanent magnet 16 is attached has the maximum amplitude, as shown in (b), the torsional resonance mode in which the substrate 13 is torsional resonance with respect to the longitudinal axis , As shown in (c), the maximum amplitude appears in the central portion of the substrate 13 and the free end 132 has a second bending resonance mode with little displacement.
  • the first resonance mode occurs when an AC magnetic field of 15 Hz is applied from a Helmholtz coil, and a peak to peak opening of a maximum of 130 V is shown. A current with voltage was created.
  • the second resonance mode occurs when an AC magnetic field of 143.2 Hz is applied from the Helmholtz coil, and the power having a peak-to-peak open-circuit voltage of 703 V is maximum. Was created.
  • the substrate to which the second charging member having a displacement of proximity and separation is attached is a permanent magnet at its free end.
  • the power generation device of the modified example configured as described above was connected to a commercial AC power line to perform an experiment on whether to generate power.
  • a resistor is connected to a power line supplied with a commercial power supply having a voltage of 220 V and a frequency of 60 Hz so that a current of 5.0 A and 9.2 A flows, respectively, and the center of the power line and the power generating element of the modified example of the present invention
  • the permanent magnets were placed 14 mm apart.
  • the condition for the power generating device having the configuration according to the present invention to have a resonance mode in which the center of the length direction of the substrate vibrates vertically is the size and thickness of the substrate constituting the power generating device, the first and second charging elements, and elasticity. It may vary depending on the coefficient and the mass of the permanent magnet, and the condition in which the second resonance mode occurs can be set through repeated experiments by those of ordinary skill in the art as taught herein.
  • two objects that are charged according to mutual displacement such as mutual contact and separation may increase the amount of charged electric charges according to the opposing surface areas, thereby increasing the voltage of the generated current.
  • the PFA film 12 has nano-scale fine irregularities formed on the charging surface 121 facing the aluminum foil 11, so that the surface area is maximized.
  • an unprocessed PFA film 12' as a material is prepared, and sodium chloride powder 2 having a nano-level particle size is sprayed at high speed with a high-pressure gas by an injection device 1 on one surface (process A).
  • the sprayed sodium chloride powder collides against the surface of the PFA film 12' and is bounced off, but a significant number of the powders are stuck on the surface of the PFA film 12'.
  • Step B the PFA film 12' in which sodium chloride powder is embedded is immersed in water. Accordingly, the water-soluble sodium chloride powder is dissolved in water and separated from the PFA film 12'.
  • sodium chloride powder was sprayed on the PFA film, but potassium chloride or other water-soluble powder may be used in addition to the sodium chloride powder.
  • FIG 9 is a graph showing voltage and current for a configuration in which nanoscale fine irregularities are formed and not formed by the process described above as a PFA film in the power generating device 10 according to the present embodiment.
  • the charging area was enlarged by forming a fine uneven structure on the PFA film, but the aluminum thin film, which is a charging material of the opposite polarity facing the PFA film, also uses the above-described process or other methods to form fine irregularities. In this case, a higher power generation effect can be obtained.

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  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

The present invention relates to an electric power generation element for generating electric power from a magnetic field formed by an AC power source flowing through an electric power cable, the electric power generation element comprising: a permanent magnet which is placed in a magnetic field and receives a magnetic force that changes in direction according to the alternation of the magnetic field; a board which has one end formed as a free end portion to which the permanent magnet is attached, and has the other end formed as a fixed end portion, the board having a predetermined elasticity and receiving a bending force that is due to the magnetic force exerted on the permanent magnet; first and second charging members which have mutually facing surfaces and are tribo-electrified to different polarities through the mutual displacement of the facing surfaces; and a frame for supporting the permanent magnet, the board, and the first and second charging members. The first charging member is fixed to the frame, and the second charging member is fixed to the board. As the board vibrates due to the bending force, displacement of the surface facing the first charging member occurs, such that the first and second charging members are electrically charged, and electric charges flow between the first and second charging members through a conductive wire connecting the first and second charging members, thereby generating electric power.

Description

마찰 대전을 이용한 전력 생성 소자Power generation device using triboelectric charging
본 발명은 마찰 대전을 이용한 전력 생성 소자에 관한 것으로서, 구체적으로는 서로 대면하는 두 물체 사이의 마찰에 의해 정전기가 생성되는 마찰 대전의 원리를 이용하여 교번하는 교류 자기장에 의해 놓여 전력을 생성하는 소자에 관한 것이다.The present invention relates to a power generating device using triboelectric charging, and specifically, a device that generates electric power by being placed by an alternating AC magnetic field using the principle of triboelectric charging in which static electricity is generated by friction between two objects facing each other. It is about.
사물 인터넷을 구현하는 데 있어서 산재되어 설치되는 센서 소자 등의 요소에 지속적으로 전력을 공급하는 것의 중요성이 매우 크다.In realizing the Internet of Things, it is very important to continuously supply power to elements such as sensor elements that are scattered and installed.
특히, 공장, 도로, 건물, 항만 등의 각종 시설물에서 무선 센서 노드를 설치하고 이로부터 각종 계측 신호를 수신하는 경우에, 센서 노드의 작동에 필수적인 전력의 공급은 배터리를 통하여 이루어지는 경우가 많지만, 배터리의 교체는 시간과 비용이 상당히 소모될 뿐만 아니라, 센서 노드가 사람이 접근하기 어려운 위치에 배치된 경우에는 배터리 교체가 불가능할 수도 있다.In particular, when a wireless sensor node is installed in various facilities such as factories, roads, buildings, ports, etc., and various measurement signals are received therefrom, power necessary for the operation of the sensor node is often supplied through a battery, but the battery The replacement of the battery is not only time-consuming and expensive, but it may not be possible to replace the battery if the sensor node is placed in a location that is difficult to access by humans.
무선 센서 노드와 같이 전력 공급을 필요로 하는 전자 장치가 주변의 전력선으로부터 전력을 공급받도록 하는 경우에는 전력선으로부터 전선을 분기하고 전자 장치의 작동에 적합한 전류 및 전압의 변환을 위한 모듈을 갖추도록 하는 것은 많은 비용을 소모하게 하며 장치의 크기와 가격을 크게 증대시키는 요인이 된다.When an electronic device requiring power supply, such as a wireless sensor node, is to be supplied with power from the surrounding power line, it is necessary to branch the wire from the power line and have a module for converting current and voltage suitable for the operation of the electronic device. It consumes a lot of cost and is a factor that greatly increases the size and price of the device.
따라서, 사물 인터넷 구현에 필요한 센서 등의 전자 장치에 주변 환경에서 에너지를 수확하여 전력을 공급하는 에너지 하베스팅(harvesting) 기술의 중요성이 증대되고 있다.Accordingly, the importance of an energy harvesting technology for supplying power by harvesting energy from the surrounding environment to electronic devices such as sensors required for IoT implementation is increasing.
그러한 에너지 하베스팅 기술로서는 영구 자석이나 자왜 소재를 활용하여 교류 자기장에서의 자기력 또는 자왜 효과를 이용하여 기계적인 변형이나 운동을 유발하고, 이를 압전 효과를 이용하여 전기 에너지로 변환하는 기술이 연구 및 개발되고 있다.As such energy harvesting technology, research and development of technology that uses permanent magnets or magnetostrictive materials to induce mechanical deformation or motion by using magnetic force or magnetostrictive effect in an alternating magnetic field, and convert it into electrical energy using piezoelectric effect. Has become.
그러나, 이러한 압전 효과를 이용한 전력 생성에 필수적인 압전 소자는 제작에 많은 시간과 비용이 소요되어 매우 고가이므로 상용화하기 어렵다.However, the piezoelectric element essential for power generation using the piezoelectric effect is difficult to commercialize because it takes a lot of time and cost to manufacture and is very expensive.
본 발명은 교류 전류의 전력선에 형성되는 교류 자기장으로부터 전력을 생성할 수 있는 전력 생성 소자를 제공하려는 것이다.An object of the present invention is to provide a power generating device capable of generating electric power from an alternating magnetic field formed in an alternating current power line.
특히, 본 발명은 마찰 대전 특성을 활용하여 비교적 간단한 구성을 가지면서 저렴하게 제조할 수 있는 전력 생성 소자를 제공하려는 것이다.In particular, the present invention is to provide a power generation device that can be manufactured inexpensively while having a relatively simple configuration by utilizing the triboelectric charging characteristic.
또한, 본 발명은 마찰 대전 특성을 활용하여 최대의 전력을 생성할 수 있는 전력 생성 소자를 제공하려는 것이다.In addition, the present invention is to provide a power generation device capable of generating maximum power by utilizing the triboelectric charging characteristics.
본 발명의 발명자는 교류 자기장 하에서 전력을 생성하는 효과적인 수단으로서 마찰 전기 특성을 활용하는 데 주목하였다.The inventors of the present invention have paid attention to utilizing triboelectric properties as an effective means of generating electric power under an alternating magnetic field.
근접하여 배치되는 두 물체 사이의 상호 변위에 의해 대전되는 2개의 소재를 대면하여 배치하고 외부로부터 가해지는 힘을 이용하여 소재를 상호 변위시킴으로써 소재들 사이에 발생하는 정전기를 소재에 부착되는 전도체를 통하여 외부로 유도하여 전력을 생성하는 마찰 대전 방식의 전력 생성 소자에 대한 연구가 진행되고 있다.Two materials that are charged by mutual displacement between two adjacent objects are placed face to face and the materials are mutually displaced using force applied from the outside, so that static electricity generated between the materials is transmitted through a conductor attached to the materials. Research on a triboelectric power generation device that generates power by inducing it to the outside is being conducted.
도 1은 마찰 대전에 의한 전력 생성의 원리를 보여주는 도면이다.1 is a diagram showing the principle of power generation by triboelectric charging.
도 1에 도시한 마찰 전기에 의한 전력 생성 소자는 'CAPTON'이라는 상표명의 폴리이미드 필름과 폴리메틸메타크릴레이트(PMMA) 필름을 도전체 전극판에 부착하고 양자를 대면시켜, 상호 이격된 초기 상태(Ⅰ)으로부터 외력에 의하여 양 필름이 근접되는 상태(Ⅱ)로 되면, 대전 현상에 의해 폴리이미드 필름에는 음전하가, PMMA 필름에는 양전하가 대전되고, 근접 상태로부터 두 물체가 서로 이격을 개시하는 상태(Ⅲ)에서는 전하의 균형을 맞추기 위한 외부 도선을 통한 전하의 흐름에 의해 전류가 발생하고, 이격된 상태(Ⅳ)에서 다시 근접이 개시될 때(Ⅴ)에는 축적되었던 전하가 사라지면서 상태 Ⅲ과는 반대 방향의 전류가 생성된다.The power generating device by triboelectricity shown in FIG. 1 is an initial state separated from each other by attaching a polyimide film and a polymethyl methacrylate (PMMA) film under the brand name of'CAPTON' to a conductor electrode plate and facing them. When both films are brought into proximity by external force from (I) (II), a negative charge is charged to the polyimide film and a positive charge is charged to the PMMA film by the charging phenomenon, and the two objects start to be separated from each other from the proximity state. In (III), a current is generated by the flow of charges through an external conductor to balance the charges, and when the proximity starts again from the separated state (IV) (V), the accumulated charges disappear and Produces a current in the opposite direction.
이와 같이 대전되는 2개의 물체를 근접 및 이격시키고 두 물체 사이에 도선을 배치함으로써 근접과 이격의 반복 동작에 의해 서로 반대 방향의 전류가 흐르는 교류 전류가 생성된다.As such, by bringing the two charged objects close and spaced apart and placing a conductor between the two objects, an AC current flowing in opposite directions is generated through repeated operation of proximity and separation.
이와 같은 마찰 대전에 의한 전류 생성에 관한 연구는 주로 웨어러블 기기와 같이 큰 외력이 작용하는 환경에 대전 소재를 배치하는 것이어서, 상용 교류 전력에 의해 생성되는 매우 약한 크기의 자기장 하에서 작동하는 소자로서 적용하기에는 적합하지 않다.The research on the current generation by triboelectric charging is mainly to place the charging material in an environment where a large external force acts, such as a wearable device, so it is not applicable as a device operating under a very weak magnetic field generated by commercial AC power. Inappropriate.
본 발명의 발명자는 상용 교류 전원이 흐르는 전선 주변에 형성되는 작은 크기의 교류 자기장에 인접 배치되어 작동하고 센서 소자와 같이 작은 수준의 전력을 소모하는 소자에 공급하기에 적합한 수 mW 수준의 전력을 생성할 수 있는 소자에 대한 연구를 지속한 결과, 이하에서 설명하는 본 발명에 따른 전력 생성 소자를 안출하기에 이르렀다.The inventors of the present invention operate by being placed adjacent to a small-sized AC magnetic field formed around a wire through which commercial AC power flows, and generate power of several mW levels suitable for supplying to devices that consume a small level of power such as sensor elements. As a result of continuing research on possible devices, it has come to conceive a power generating device according to the present invention described below.
본 발명은 전력선에 흐르는 교류 전원에 의해 형성되는 자기장으로부터 전력을 생성하는 전력 생성 소자에 관한 것으로서, The present invention relates to a power generation device that generates power from a magnetic field formed by an AC power source flowing through a power line,
자기장에 놓여 자기장의 교번에 따라 방향이 전환되는 자기력을 받는 영구 자석; 일단이 자유 단부로 형성되고 타단은 고정 단부로 형성되며, 자유 단부에 영구 자석이 부착되고, 소정의 탄성을 가지고 영구 자석이 받는 자기력에 의한 굽힘력을 받는 기판; 상호 대면하는 표면을 가지며, 대면하는 표면의 상호 변위에 의해 극성이 서로 다르게 마찰 대전되는 제1 및 제2 대전 부재; 및 영구 자석, 기판, 제1 및 제2 대전 부재이 지지되는 프레임을 포함하고,A permanent magnet placed in a magnetic field and receiving a magnetic force whose direction is changed according to an alternating magnetic field; A substrate having one end formed as a free end and the other end formed as a fixed end, a permanent magnet attached to the free end, and having a predetermined elasticity and receiving a bending force by a magnetic force received by the permanent magnet; First and second charging members having surfaces facing each other and having different polarities due to mutual displacement of the facing surfaces; And a frame on which the permanent magnet, the substrate, and the first and second charging members are supported,
제1 대전 부재는 프레임에 고정되고 제2 대전 부재는 기판에 고정되어, 굽힘력에 의해 기판이 진동함에 따라 제1 대전 부재와 대면하는 표면에 변위가 발생함으로써 제1 및 제2 대전 부재가 대전되고, 제1 및 제2 대전 부재를 상호 접속하여 주는 도선에 의해 제1 및 제2 대전 부재 사이에 전하가 흐름으로써 전력이 생성되도록 구성되는 것이다.The first charging member is fixed to the frame and the second charging member is fixed to the substrate. As the substrate vibrates due to the bending force, displacement occurs on the surface facing the first charging member, thereby charging the first and second charging members. It is configured such that electric power is generated by the flow of electric charges between the first and second charging members by a conductive wire connecting the first and second charging members to each other.
이러한 구성의 전력 생성 장치에서 영구 자석은 교류 전원이 흐르는 전력선 주변에 형성되는 교류 자기장에 놓이며, 기판은 표면이 교류 자기장에 수직하게 놓인다.In the power generating device of this configuration, the permanent magnet is placed in an AC magnetic field formed around a power line through which AC power flows, and the surface of the substrate is placed perpendicular to the AC magnetic field.
이에 따라 영구 자석은 방향이 교번하는 자기력에 의해 방향이 교번되는 수직 하중을 기판에 가하게 되고, 기판은 고정 단부를 지지점으로 하여 자유 단부가 굽힘 하중을 받는다.Accordingly, the permanent magnet applies a vertical load of alternating directions to the substrate by magnetic force of alternating directions, and the free end of the substrate receives a bending load with the fixed end as a support point.
굽힘 하중이 교번하여 기판이 진동을 하며, 기판과 영구 자석은 교류 자기장의 교번하는 주파수에 맞추어 진동을 하고, 이에 따라 기판에 고정되는 제2 대전 부재가 프레임에 고정된 제1 대전 부재에 대해 근접 또는 접촉과 이격되는, 제1 대전 부재와 제2 대전 부재 사이의 서로 대면하는 표면 사이에 변위가 반복적으로 크게 발생하게 된다.The substrate vibrates due to alternating bending loads, and the substrate and the permanent magnet vibrate according to the alternating frequency of the alternating magnetic field, and accordingly, the second charging member fixed to the substrate approaches the first charging member fixed to the frame. Alternatively, a large displacement occurs repeatedly between the surfaces facing each other between the first charging member and the second charging member, which are spaced apart from the contact.
제1 대전 부재와 제2 대전 부재는 외부의 전자 장치와 연결되어 외부의 전자 장치를 통하여 상호 전기적으로 접속되어 이들 사이에 교번하는 전류, 즉 교류가 생성된다.The first charging member and the second charging member are connected to an external electronic device and are electrically connected to each other through an external electronic device to generate an alternating current, that is, an alternating current therebetween.
이와 같이, 본 발명의 구성과 작용에 따르면, 마찰 대전하는 2개의 부재를 서로 대면하게 배치하고 하나의 부재를 교류 자기장에 의해 영구 자석이 받는 굽힘력에 의해 공진하는 외팔보 형태의 기판에 부착함으로써, 교류 전력을 생성하게 된다.As described above, according to the configuration and operation of the present invention, by arranging two members to be frictionally charged facing each other, and attaching one member to a cantilever-shaped substrate resonating by the bending force received by the permanent magnet by an alternating magnetic field, It generates AC power.
마찰 대전하는 부재나 영구 자석 및 기판은 자왜 소재나 압전 소재에 비해 값싸게 입수할 수 있는 소재이므로 전력 생성 소자를 저렴하고 간단하게 구성할 수 있다. The frictionally charged members, permanent magnets, and substrates are materials that can be obtained inexpensively compared to magnetostrictive materials or piezoelectric materials, so that a power generating element can be constructed inexpensively and simply.
또한, 이러한 본 발명의 전력 생성 소자는 전원선이 있는 위치라면 전원선에 분기선을 설치하는 일이나 전원선 또는 그 밖의 주변 시설을 변경하는 일이 없이 간단하게 설치되어 전력을 수확할 수 있다.In addition, the power generation device of the present invention can be simply installed and harvest power without installing a branch line on the power line or changing the power line or other surrounding facilities if the power line is located.
특히, 본 발명에 따른 전력 생성 소자는 웨어러블 기기에 이용되는 전력 생성 소자와는 달리 마찰 대전되는 2개의 부재 사이의 변위가 크지 않게 구성하여도 전력 생성 소자로부터의 전력을 필요로 하는 전자 장치에 소요되는 전력을 공급할 수 있게 된다.In particular, the power generation device according to the present invention is required for an electronic device that requires power from the power generation device even if the displacement between the two members to be tribologically charged is not large, unlike the power generation device used in a wearable device. It will be able to supply the power that becomes.
본 발명의 부가적 특징으로서, 자기장의 교번에 따라 영구 자석이 가하는 굽힘력의 방향이 교번되면서 기판에서 중심부의 변형이 최대로 되고 자유단부의 변형이 최소로 되는 공진을 하도록 구성할 수 있다.As an additional feature of the present invention, the direction of the bending force applied by the permanent magnet is alternated according to the alternating magnetic field, so that the deformation of the center portion of the substrate is maximized and the deformation of the free end portion is minimized.
이러한 구성에 따르면, 영구 자석이 가하는 굽힘력에 의해 기판이 공진을 하되, 길이 방향 중심부가 최대로 변형되고 양 단부의 변형이 최소로 되는 공진을 하게 되어, 제1 대전 부재와 제2 대전 부재 사이의 상호 변위가 최대로 된다.According to this configuration, the substrate resonates due to the bending force exerted by the permanent magnet, but the center portion in the longitudinal direction is maximally deformed and the deformation at both ends is minimized, so that between the first charging member and the second charging member The mutual displacement of is maximized.
이와 같이 제1 대전 부재와 제2 대전 부재 사이의 상호 변위가 최대로 되는 경우에 전력 생성 소자에서는 최대의 전력을 얻을 수 있게 된다.In this way, when the mutual displacement between the first charging member and the second charging member is maximized, the power generating element can obtain the maximum power.
한편, 본 발명의 전력 생성 소자에서, 기판의 두께, 폭, 고정 단부로부터 영구 자석이 부착되는 위치까지의 길이, 및 탄성 계수와 영구 자석의 질량 중의 어느 하나 이상을 자기장의 주파수에 따라 조절함으로써 기판에서 중심부의 변형이 최대로 되고 자유단부의 변형이 최소로 되는 공진이 일어나도록 할 수 있다.On the other hand, in the power generating device of the present invention, the substrate by adjusting any one or more of the thickness and width of the substrate, the length from the fixed end to the position where the permanent magnet is attached, and the elastic modulus and the mass of the permanent magnet according to the frequency of the magnetic field. At, it is possible to generate resonance in which the deformation of the center is maximized and the deformation of the free end is minimized.
따라서, 본 발명의 전력 생성 소자를 배치하는 위치에 있는 전력선의 주파수에 맞추어 기판이나 영구 자석의 크기나 질량 또는 탄성 계수를 조절하는 간단하고 저렴한 방법으로 최대의 전력을 얻을 수 있다.Accordingly, the maximum power can be obtained by a simple and inexpensive method of adjusting the size, mass, or elastic modulus of the substrate or permanent magnet according to the frequency of the power line at the position where the power generating device of the present invention is disposed.
본 발명의 실시 양태의 하나로서, As one of the embodiments of the present invention,
제1 대전 부재는 양전하로 대전되는 금속제의 박막으로 이루어지고, 제2 대전 부재는 음전하로 대전되는 수지제의 패널로 이루어지며, 제2 대전 부재에는 제1 대전 부재와 대면하는 표면의 이면에 전기 전도성 재질의 박막이 부착되어 이 박막에 도선이 접속되는 것으로 구성할 수 있다.The first charging member is made of a metal thin film that is charged with a positive charge, the second charging member is made of a resin panel that is charged with a negative charge, and the second charging member has electricity on the back surface of the surface facing the first charging member. A thin film made of a conductive material is attached and a conductive wire is connected to the thin film.
이와 같이 구성하면 저렴한 소재로 전력 생성 소자를 구성할 수 있다.If configured in this way, it is possible to construct a power generating device from inexpensive materials.
본 발명의 다른 실시 양태로서, 앞의 실시 양태와는 역으로, 제1 대전 부재는 음전하로 대전되는 수지제의 패널로 이루어지며 제2 대전 부재는 양전하로 대전되는 금속제의 박막으로 이루어지는 것으로 구성할 수도 있다.As another embodiment of the present invention, contrary to the previous embodiment, the first charging member is made of a resin panel that is charged with a negative charge, and the second charging member is made of a metal thin film that is charged with a positive charge. May be.
한편, 본 발명의 부가적 특징으로서, On the other hand, as an additional feature of the present invention,
제1 대전 부재 또는 제2 대전 부재는 음전하로 대전되는 수지제의 패널로 이루어지며, 제1 대전 부재와 대면하는 표면에는 미세 요철이 형성되는 것으로 구성할 수 있다.The first charging member or the second charging member may be made of a panel made of resin that is charged with negative charges, and may be configured such that fine irregularities are formed on a surface facing the first charging member.
미세 요철에 의해 정전하가 축적되는 대전 표면이 확장됨으로써 더 큰 전력을 얻을 수 있다.Larger power can be obtained by expanding the charging surface on which static charges are accumulated due to fine irregularities.
또한, 이러한 미세 요철은 수용성 분말을 제1 대전 부재와 대면하는 표면에 분사한 후에 수용성 분말을 물에 용해시켜 형성될 수 있다. 따라서, 매우 간단한 방법으로 매우 미세한 요철 구조를 형성할 수 있다.In addition, such fine irregularities may be formed by dissolving the water-soluble powder in water after spraying the water-soluble powder on the surface facing the first charging member. Therefore, a very fine uneven structure can be formed by a very simple method.
도 1은 마찰 대전 원리에 따른 전력 생성 소자의 개략적인 구성과 동작을 설명하는 도면이다.1 is a diagram for explaining a schematic configuration and operation of a power generating element according to a triboelectric charging principle.
도 2는 본 발명의 하나의 실시예에 따른 전력 생성 소자의 구성을 나타내는 사시도이다.본 발명의 하나의 실시예에 따른 전력 생성 소자2 is a perspective view showing the configuration of a power generation device according to an embodiment of the present invention. Power generation device according to an embodiment of the present invention
도 3은 본 발명의 하나의 실시예에 따른 전력 생성 소자가 작동하는 상태를 보여주는 도면이다.3 is a view showing a state in which the power generating device according to an embodiment of the present invention operates.
도 4는 본 발명의 하나의 실시예에 따른 전력 생성 소자에서 전력이 생성되는 원리를 보여주는 도면이다.4 is a diagram showing a principle of generating power in a power generating device according to an embodiment of the present invention.
도 5는 본 발명의 실시예 및 비교예에 따른 전력 생성 소자에서 기판의 공진 모드를 보여주는 도면이다.5 is a diagram showing a resonance mode of a substrate in a power generating device according to an embodiment and a comparative example of the present invention.
도 6 및 도 7은 각각 본 발명의 비교예 및 실시예에 따른 전력 생성 소자에서 기판의 공진 모드 및 그에 따라 생성되는 전력의 전압을 나타내는 그래프이다.6 and 7 are graphs showing a resonance mode of a substrate and a voltage of power generated accordingly in a power generating device according to a comparative example and an embodiment of the present invention, respectively.
도 8은 본 발명의 하나의 실시예에 따른 전력 생성 소자의 PFA 필름에 미세 요철을 형성하는 공정을 보여주는 도면이다.8 is a view showing a process of forming fine irregularities in the PFA film of the power generating device according to an embodiment of the present invention.
도 9는 본 발명의 하나의 실시예에 따른 전력 생성 소자에서 PFA 필름의 미세 요철 유무에 따른 전력의 전압과 전류의 차이를 비교하여 보여주는 그래프이다.9 is a graph showing a comparison of a difference between a voltage and a current of power according to the presence or absence of fine irregularities of a PFA film in the power generating device according to an embodiment of the present invention.
이하, 본 발명을 실시하기 위한 구체적인 내용으로서, 본 발명의 하나의 실시예에 따른 전력 생성 소자의 구성과 그 작용을 설명한다.Hereinafter, as specific details for carrying out the present invention, the configuration and operation of a power generating device according to an embodiment of the present invention will be described.
도 2는 본 발명의 실시예에 따른 전력 생성 소자의 구성을 도식적으로 나타낸 것인데, 이 도면을 참조하여 전력 생성 소자의 구성을 설명한다.2 schematically shows a configuration of a power generation device according to an embodiment of the present invention, and the configuration of the power generation device will be described with reference to this drawing.
본 실시예의 전력 생성 소자(10)는 접촉에 의해 대전되는 제1 대전 부재로서 15 ㎛ 두께의 알루미늄 포일(11), 제2 대전 부재로서 테프론 수지인 50 ㎛ 두께의 PFA(Perfluoroalkozy alkane) 필름(12)을 마련하였다. PFA 필름(12)은 알루미늄 포일(11)과 대향하는 대전 표면(121)에 나노 스케일의 미세 요철이 형성되어 있어서 표면적이 확대되어 있다.The power generating element 10 of this embodiment is a 15 μm-thick aluminum foil 11 as a first charging member that is charged by contact, and a 50 μm-thick Perfluoroalkozy alkane (PFA) film 12 as a Teflon resin as a second charging member. ) Was prepared. In the PFA film 12, nanoscale fine irregularities are formed on the charging surface 121 facing the aluminum foil 11, and the surface area is enlarged.
PFA 필름(12)은 기판(13)에 지지되는데, 기판(13)은 300㎛ 두께의 티타튬(Ti) 소재의 패널로 형성되고, 기판(13)의 일단은 프레임(미도시)에 일측 단부가 고정되어 고정 단부(131)로 되고 타측 단부는 고정되지 않은 자유 단부(132)로 되어, 기판(13) 전체로서 외팔보(Cantilever beam)를 이루고 있다.The PFA film 12 is supported on the substrate 13, the substrate 13 is formed of a panel made of a 300 μm-thick titanium (Ti) material, and one end of the substrate 13 is attached to a frame (not shown). Is fixed to a fixed end 131 and the other end is a free end 132 that is not fixed to form a cantilever beam as the entire substrate 13.
기판(13)과 PFA 필름(12) 사이에는 도전 전극으로서 두께 100 nm의 금 박막층(14)이 PFA 필름(12)의 이면에 스퍼터링에 의해 형성되어 있고, 금 박막층(14)과 기판(13) 사이에는 접착층(15)이 마련되어, PFA 필름(12)과 금 박막층(14)을 기판(13)에 고정 부착하고 있다.Between the substrate 13 and the PFA film 12, a gold thin film layer 14 having a thickness of 100 nm as a conductive electrode is formed on the back surface of the PFA film 12 by sputtering, and the gold thin film layer 14 and the substrate 13 An adhesive layer 15 is provided in between, and the PFA film 12 and the gold thin film layer 14 are fixedly attached to the substrate 13.
한편, 기판(13)의 자유 단부(132)에는 영구 자석(16)으로서 각각 1.5 g의 질량을 갖는 네오디뮴(Neodymium, Nd) 자석 7개가 기판의 양면에 고정되어 있다. 네오디뮴 자석은 희토류 자석의 일종으로, 네오디뮴(Nd)과 철(Fe) 및 붕소(B)를 2:14:1의 비율로 분말 야금법으로 합금하여 만들어지는 것이다.On the other hand, 7 Neodymium (Nd) magnets each having a mass of 1.5 g as a permanent magnet 16 are fixed to both sides of the substrate at the free end 132 of the substrate 13. Neodymium magnets are a kind of rare earth magnets, and are made by alloying neodymium (Nd), iron (Fe), and boron (B) in a ratio of 2:14:1 by powder metallurgy.
알루미늄 포일(11)은 프레임(미도시)에 양단이 고정되어 있고, PFA 필름(12)은 기판(13)에 부착되어 있으며, 외력이 가해지지 않은 상태에서 대체로 서로 평행한 상태로 배치되어 있다.Both ends of the aluminum foil 11 are fixed to a frame (not shown), and the PFA film 12 is attached to the substrate 13, and is disposed substantially parallel to each other in a state where no external force is applied.
한편, 알루미늄 포일(11)과 PFA 필름(12), 금 박막층(14) 및 접착층(15)은 모두 폭 20 mm, 길이 50 mm로 형성된 것이며, 기판(13)은 20 mm 폭과 80 mm 길이로 형성되어, 길이 방향 양단부(131, 132)에는 PFA 필름(12), 금 박막층(14) 및 접착층(15)이 부착되지 않은 상태이다.Meanwhile, the aluminum foil 11 and the PFA film 12, the gold thin film layer 14, and the adhesive layer 15 are all formed to have a width of 20 mm and a length of 50 mm, and the substrate 13 is 20 mm wide and 80 mm long. It is formed, and the PFA film 12, the gold thin film layer 14, and the adhesive layer 15 are not attached to both ends 131 and 132 in the longitudinal direction.
이상에서 한정하는 각 박막이나 필름의 크기와 폭, 두께 및 영구 자석의 질량은 영구 자석(16)이 143.2 Hz의 교류 자기장 하에 놓인 경우에 후술하는 본 실시예에서 한정하는 공진 조건을 만족하도록 설정된 수치인데, 이는 하나의 예시일 뿐이고 교류 자기장의 크기와 주파수 조건 등에 맞추어 본 실시예에서 한정하는 공진 조건을 만족하도록 기판의 두께, 길이, 폭 및 탄성계수와 영구 자석의 질량이 조정될 수 있다.The size, width, thickness, and mass of each thin film or film as defined above, and the mass of the permanent magnet are numerical values set to satisfy the resonance conditions defined in this embodiment to be described later when the permanent magnet 16 is placed under an alternating magnetic field of 143.2 Hz. However, this is only an example, and the thickness, length, width, and modulus of elasticity of the substrate and the mass of the permanent magnet may be adjusted to satisfy the resonance conditions defined in this embodiment according to the size and frequency conditions of the alternating magnetic field.
또한, 본 실시예에서는 상호 변위에 의해 대전하는 제1 대전 부재와 제2 대전 부재로서 각각 알루미늄 포일(11)과 PFA 필름(12)을 이용하고 있는데, 알루미늄 포일과 테프론 수지는 값싸게 이용할 수 있는 소재이므로 이들 소재를 이용한 전력 생성 소자의 원가를 크게 낮출 수 있으며, 후술하겠지만, 테프론 수지는 간단한 방식의 가공을 통하여 그 대전 표면적을 확대시켜서 전력 생성 소자에서 생성하는 전력을 증대시킬 수 있다는 장점이 있다.In addition, in this embodiment, an aluminum foil 11 and a PFA film 12 are used as the first charging member and the second charging member, respectively, which are charged by mutual displacement, but the aluminum foil and Teflon resin are available inexpensively. Since it is a material, the cost of power generation devices using these materials can be greatly reduced, and as will be described later, Teflon resin has the advantage of increasing the power generated by the power generation device by expanding its charging surface area through simple processing. .
그러나, 본 발명은 이러한 소재에 한정되지 않고, 양극으로 대전되는 소재로서, 알루미늄 외의 다른 금속 박막이나 패널 또는 유리, 마이카(Mica), 실리카(Silica) 등의 소재의 패널을 이용할 수 있고, 음극으로 대전되는 소재로서 폴리에틸렌(PE), 폴리프로필렌(PP), 폴리비닐클로라이드(PVC) 또는 PTEE(Polytetrafluorethylene) 등의 수지 소재를 이용할 수도 있다.However, the present invention is not limited to these materials, and as a material that is charged with an anode, a thin metal film or panel other than aluminum, or a panel made of a material such as glass, mica, silica, etc. may be used, and as a cathode. As the material to be charged, a resin material such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), or PTEE (polytetrafluorethylene) may be used.
또한, 본 실시예에서는 PFA 필름(12)에 금 박막층(14)을 형성하였지만, 금 이외의 다른 전기 전도성이 놓은 재료의 박막을 형성할 수도 있다.In addition, although the gold thin film layer 14 is formed on the PFA film 12 in the present embodiment, a thin film of a material having electrical conductivity other than gold may be formed.
이상과 같은 구성의 전력 생성 소자(10)는 도 3에 개략적으로 도시한 상태에 놓여서 작동하게 된다.The power generating element 10 having the above configuration is operated while being placed in the state schematically shown in FIG. 3.
먼저, 본 실시예의 전력 생성 소자(10)는 영구 자석(16)이 교류 자기장에 놓이게 된다.First, in the power generating element 10 of this embodiment, the permanent magnet 16 is placed in an alternating magnetic field.
본 실시예의 전력 생성 소자(10)는 교류 전류가 흐르는 전력선(20) 주변에 배치된다. The power generating device 10 of this embodiment is disposed around the power line 20 through which an AC current flows.
전력선(20)에 흐르는 교류 전류에 의해 전력선 주변에는 자기장의 방향이 교번되는 교류 자기장(B)이 형성되며, 전력 생성 소자(10)의 영구 자석(16)이 교류 자기장(B)에 놓이되, 자기장(B)의 방향이 기판(13)의 표면의 평면에 수직하게 되도록 배치된다. An alternating magnetic field (B) in which the directions of the magnetic field alternate around the power line is formed by the alternating current flowing through the power line 20, and the permanent magnet 16 of the power generating element 10 is placed in the alternating magnetic field (B). , The magnetic field B is disposed so that the direction of the magnetic field B is perpendicular to the plane of the surface of the substrate 13.
교류 자기장의 세기는 전력선(20)으로부터의 거리에 반비례하므로, 영구 자석(16)은 전력선(20)과 간섭이 없는 범위에서 최대한 전력선(20)에 근접하여 배치되는 것이 유리하다.Since the strength of the AC magnetic field is inversely proportional to the distance from the power line 20, the permanent magnet 16 is advantageously disposed as close to the power line 20 as possible within a range without interference with the power line 20.
이러한 배치에 따라, 영구 자석(16)은 교번하는 자기장에 의해 방향이 교번하는 자기력을 받게 되며, 영구 자석(16)은 외팔보를 구성하는 기판(13)의 자유 단부에 부착되므로, 기판(13)은 그 자유 단부(132)에서 표면의 평면에 대해 수직 방향으로 작용하는 굽힘 하중을 받게 되며, 이러한 굽힘 하중은 교류 자기장의 변동에 따라 방향이 교번된다.According to this arrangement, the permanent magnet 16 receives magnetic force of alternating directions by the alternating magnetic field, and the permanent magnet 16 is attached to the free end of the substrate 13 constituting the cantilever, so the substrate 13 Is subjected to a bending load acting in a direction perpendicular to the plane of the surface at its free end 132, and the bending load alternates in direction according to the fluctuation of the alternating magnetic field.
이에 따라 기판(13)은 고정 단부(131)를 지점으로 하고 자유 단부(132)에 부착된 질량체인 영구 자석(16)이 인가하는 교번 하중에 의해 진동 운동을 하게 된다.Accordingly, the substrate 13 vibrates by an alternating load applied by the permanent magnet 16, which is a mass attached to the free end 132 with the fixed end 131 as a point.
이러한 진동 운동에 의해 기판(13)에 부착되어 있는 제2 대전 부재로서의 PFA 필름(12)는 상하로 운동을 하게 되고, 일정 위치에 고정되어 있는 제1 대전 부재로서의 알루미늄 포일(11)에 대하여 근접 및 이격되는 운동을 반복하게 된다.Due to this vibrational motion, the PFA film 12 as the second charging member attached to the substrate 13 moves up and down, and is close to the aluminum foil 11 as the first charging member fixed at a certain position. And it repeats the movement that is spaced apart.
이와 같은 알루미늄 포일(11)과 PFA 필름(12)의 근접 및 이격에 의해 교류 전력이 생성되는데, 그 원리는 도 1을 참조하여 설명한 바와 같으며, 도 4에 전력 생성의 원리를 도식적으로 도시하였다.AC power is generated by the proximity and separation of the aluminum foil 11 and the PFA film 12, and the principle is as described with reference to FIG. 1, and the principle of power generation is schematically illustrated in FIG. .
도 4를 참조하여 본 실시예의 전력 생성 소자에서 전류가 생성되는 원리를 살펴본다. Referring to FIG. 4, a principle of generating current in the power generating device of this embodiment will be described.
알루미늄 포일(11)과 PFA 필름(12)이 상호 이격된 초기 상태(i)에서, 기판(13)의 진동에 의해 PFA 필름(12)이 알루미늄 포일(11)에 근접하면(상태 ii로 되면, 대전 현상에 의해 알루미늄 포일(11)에는 양전하가, PFA 필름(12)에는 음전하가 대전된다.In the initial state (i) in which the aluminum foil 11 and the PFA film 12 are spaced apart from each other, when the PFA film 12 approaches the aluminum foil 11 due to the vibration of the substrate 13 (in the state ii, The aluminum foil 11 is charged with positive charges and the PFA film 12 is charged with negative charges by the charging phenomenon.
근접 상태(ii)로부터 PFA 필름(12)이 이격되기 시작하면(상태 iii, 전하의 균형을 맞추기 위한 외부 도선을 통한 전하의 흐름에 의해 전류가 발생하고, 이격된 상태(iv)에서 다시 근접하기 시작하면(상태 v), 축적되었던 전하가 사라지면서 상태 iii는 반대 방향의 전류가 생성된다.When the PFA film 12 starts to be separated from the proximity state (ii) (state iii, current is generated by the flow of charges through the external conductor to balance the charges, and then approaches again in the separated state (iv). When started (state v), the accumulated charge disappears, and state iii creates a current in the opposite direction.
이와 같이 본 실시예의 전력 생성 소자(10)에서도 마찰 대전에 의한 전류 생성의 원리에 따라 교류 전류가 생성된다.As described above, in the power generating element 10 of the present embodiment, AC current is also generated according to the principle of current generation by triboelectric charging.
다시 도 3을 참조하면, 알루미늄 포일(11)과 PFA 필름(12)에는 각각 도선(17, 18)이 연결되어 있고, 이 도선(17, 18)은 센서 소자(30)에 연결되어 교류 전류을 공급하게 된다.Referring back to FIG. 3, the aluminum foil 11 and the PFA film 12 are respectively connected to conductors 17 and 18, and the conductors 17 and 18 are connected to the sensor element 30 to supply AC current. Is done.
알루미늄 포일(11)에는 도선(17)이 직접 연결되고 PFA 필름(12)에는 금 박막층(14)을 통하여 도선(18)이 연결되어 알루미늄 포일(11)과 PFA 필름(12) 사이의 전하의 이동 통로, 즉 전류가 흐르는 통로가 된다.The conductive wire 17 is directly connected to the aluminum foil 11 and the conductive wire 18 is connected to the PFA film 12 through a gold thin film layer 14 to transfer electric charges between the aluminum foil 11 and the PFA film 12. It becomes a path, that is, a path through which current flows.
센서 소자(30)는 본 실시예의 전력 생성 소자(10)에 의해 생성되는 전력에 의해 작동되는 것이며, 전력 생성 소자(10)로부터의 교류 전류를 그 용도에 맞추어 정류하는 정류 모듈 및 이차전지 또는 콘덴서와 같은 축전 소자를 갖추어 전력 생성 소자(10)에서 생성된 전력을 저장하고 센서 소자(30)에서 필요로 하는 전압과 전류로 변환하여 사용하게 된다.The sensor element 30 is operated by electric power generated by the power generating element 10 of the present embodiment, and a rectifier module and a secondary battery or capacitor that rectify the AC current from the power generating element 10 according to its use. Equipped with a storage device such as, the power generated by the power generating device 10 is stored and converted into voltage and current required by the sensor device 30 to be used.
이러한 센서 소자(30)는 와이파이 모듈과 같은 무선 통신 수단을 갖추고 사람이 접근할 수 없으나 전력선(20)이 배치된 위치에 마련됨으로써 전력 생성 소자(10)로부터의 교류 전류를 이용하여 작동하여 원격지에 있는 서버나 관리자의 스마트폰(40)과 같은 정보 기기에 측정한 정보를 송신하게 된다.The sensor element 30 is equipped with a wireless communication means such as a Wi-Fi module and cannot be accessed by humans, but is provided at a location where the power line 20 is disposed, so that it operates using an alternating current from the power generating element 10 to be operated at a remote location. The measured information is transmitted to an information device such as an existing server or an administrator's smartphone 40.
한편, 본 실시예의 전력 생성 소자(10)에 대하여 최대의 전력을 생성할 수 있는 조건에 대하여 실험하였다.On the other hand, the conditions for generating the maximum power for the power generating device 10 of the present embodiment were tested.
본 실시예의 전력 생성 소자(10)를 헬름홀츠 코일에 배치하여 교류 자기장을 인가하고, 기판의 진동 모드와 생성되는 전류의 전압을 측정하였다.The power generating element 10 of the present embodiment was placed on a Helmholtz coil to apply an alternating magnetic field, and the vibration mode of the substrate and the voltage of the generated current were measured.
헬름홀츠 코일은 지름 140 mm을 가지고 7 Oe의 자기 세기를 가지는 교류 자기장을 인가하도록 하였으며, 전력 생성 소자의 영구 자석(10)이 헬름홀츠 코일의 교류 자기장에 놓이도록 배치하여, 교류 자기장의 교번 주파수를 0으로부터 계속 증가시키면서 기판(13)의 진동 모드와 전력 생성 소자에서 생성되는 전력의 전압을 측정하였다.The Helmholtz coil has a diameter of 140 mm and an alternating magnetic field having a magnetic strength of 7 Oe is applied, and the permanent magnet 10 of the power generating element is placed in the alternating magnetic field of the Helmholtz coil, so that the alternating frequency of the alternating magnetic field is zero. While increasing from, the vibration mode of the substrate 13 and the voltage of the power generated by the power generating element were measured.
도 5은 헬름홀츠 코일의 자기장의 주파수에 따라 기판(13)에서 나타나는 공진 상태들을 도시하고 있다.5 shows resonance states appearing in the substrate 13 according to the frequency of the magnetic field of the Helmholtz coil.
공진 상태는 주파수의 증가에 따라 3가지 모드로 나타나는데, 주파수 증가에 따라 낮은 주파수로부터 순차로, (a)에 도시한 바와 같은, 기판의 고정 단부(131)를 중심으로 하여 회동하는 형태로 거동하며 영구 자석(16)이 부착된 자유 단부(131)가 최대 진폭을 가지는 첫 번째 굽힘 공진 모드, (b)에 도시한 바와 같은, 기판(13)이 길이 방향의 축선에 대하여 비틀림 공진하는 비틀림 공진 모드, (c)에 도시한 바와 같은, 기판(13)의 중앙 부분에서 최대 진폭이 나타나고 자유 단부(132)는 변위가 거의 없는 두 번째 굽힘 공진 모드가 나타난다.The resonance state appears in three modes as the frequency increases, and it behaves in a form that rotates around the fixed end 131 of the substrate, as shown in (a), sequentially from low frequency as the frequency increases. The first bending resonance mode in which the free end 131 to which the permanent magnet 16 is attached has the maximum amplitude, as shown in (b), the torsional resonance mode in which the substrate 13 is torsional resonance with respect to the longitudinal axis , As shown in (c), the maximum amplitude appears in the central portion of the substrate 13 and the free end 132 has a second bending resonance mode with little displacement.
도 6은 첫 번째 굽힘 공진 모드에서의 변위와 생성되는 전압을 나타내는데, 첫 번째 공진 모드는 헬름홀츠 코일에서 15 Hz의 교류 자기장을 인가하였을 때 발생하며, 최대 130 V의 피크투피크(peak to peak) 개방전압을 갖는 전류가 생성되었다.6 shows the displacement and the generated voltage in the first bending resonance mode.The first resonance mode occurs when an AC magnetic field of 15 Hz is applied from a Helmholtz coil, and a peak to peak opening of a maximum of 130 V is shown. A current with voltage was created.
도 7은 두 번째 굽힘 공진 모드에서의 변위와 생성되는 전압을 나타내는데, 두 번째 공진 모드는 헬름홀츠 코일에서 143.2 Hz의 교류 자기장을 인가하였을 때 발생하며, 최대 703 V의 피크투피크 개방전압을 갖는 전력이 생성되었다.7 shows the displacement and the generated voltage in the second bending resonance mode.The second resonance mode occurs when an AC magnetic field of 143.2 Hz is applied from the Helmholtz coil, and the power having a peak-to-peak open-circuit voltage of 703 V is maximum. Was created.
도 6에서 보듯이 비틀림 공진 모드는 기판(13)의 상하 변위가 거의 없으므로, 전류가 생성되지 않았다.As shown in FIG. 6, in the torsional resonance mode, since there is little vertical displacement of the substrate 13, no current is generated.
동일한 가진력이 주어졌을 때, 공진이 일어나는 조건에서 진폭이 최대로 되고, 본 실시예에 따른 전력 생성 소자에서 근접과 이격의 변위가 있는 제2 대전 부재가 부착되는 기판이 그 자유 단부의 영구 자석이 받는 상하로 방향이 교번되는 자기력에 의해 굽힘 진동이 발생하는 경우에 공진에 의해 최대 변위가 발생하고, 그러한 최대 변위에 의해 제1 대전 부재와 제2 대전 부재 사이의 변위가 최대로 되면서 생성되는 전력의 전압이 최대로 될 수 있다.When the same excitation force is given, the amplitude is maximized under the condition that resonance occurs, and in the power generating element according to the present embodiment, the substrate to which the second charging member having a displacement of proximity and separation is attached is a permanent magnet at its free end. When bending vibration occurs due to the magnetic force in which the received vertical direction is alternating, the maximum displacement occurs due to resonance, and the electric power generated when the displacement between the first charging member and the second charging member is maximized by such maximum displacement. The voltage of can be maximized.
특히, 앞에서 설명한 실험 결과에서와 같이, 공진은 여러가지 모드로 발생하며, 기판(13)의 중심부에 공진에 따른 최대 변위가 발생하고 기판의 양 단부는 변위가 발생하지 않는 공진 조건에서 최대의 전력 생성이 가능하다는 것을 밝혀냈다.In particular, as in the experimental results described above, resonance occurs in various modes, and the maximum displacement occurs in the center of the substrate 13 according to the resonance, and both ends of the substrate generate the maximum power under a resonance condition where no displacement occurs. It turns out that this is possible.
이상의 실험 결과는 본 실시예의 전력 생성 소자에 143.2 Hz의 교류 자기장을 인가하였을 때 기판의 중심부가 상하로 진동하는 두 번째의 굽힘 공진 모드가 나타나고 이러한 공진 모드에서 최대의 전력이 생성되는 것을 확인한 것이지만, 본 실시예의 변형예로서, 기판의 길이를 95 mm로 하고 영구 자석을 총12개를 부착하고 다른 조건은 실시예와 동일하게 하여 전력 생성 소자를 구성한 경우에는 상용 교류 전력의 주파수인 60 Hz에서 두 번째의 굽힘 공진 모드에 따른 공진이 발생하고 최대의 전력이 발생하는 것을 확인하였다.The above experimental results confirm that when an AC magnetic field of 143.2 Hz is applied to the power generating device of the present embodiment, a second bending resonance mode in which the center of the substrate vibrates up and down appears, and the maximum power is generated in this resonance mode. As a modified example of this embodiment, when the length of the substrate is 95 mm, a total of 12 permanent magnets are attached, and other conditions are the same as in the embodiment, when the power generating element is configured, the frequency of the commercial AC power is two at 60 Hz. It was confirmed that resonance occurred according to the second bending resonance mode and the maximum power was generated.
또한, 이와 같이 구성된 변형예의 전력 생성 소자를 상용 교류 전원선에 인전시켜서 전력의 생성 여부에 대한 실험을 수행하였다.In addition, the power generation device of the modified example configured as described above was connected to a commercial AC power line to perform an experiment on whether to generate power.
이 실험에서는 전압 220 V 및 주파수 60 Hz의 상용 전원이 공급되는 전원선에 저항체를 연결하여 각각 5.0 A 및 9.2 A의 전류가 흐르도록 하고, 전원선의 중심과 본 발명의 변형례의 전력 생성 소자의 영구 자석이 14 mm 이격되도록 배치하였다.In this experiment, a resistor is connected to a power line supplied with a commercial power supply having a voltage of 220 V and a frequency of 60 Hz so that a current of 5.0 A and 9.2 A flows, respectively, and the center of the power line and the power generating element of the modified example of the present invention The permanent magnets were placed 14 mm apart.
5.0 A의 전류가 흐르는 경우에는. 영구 자석이 배치된 위치에서는 최대 1.3 Oe 크기의 교류 자기장이 형성된 것으로 계산되며, 전력 생성 소자에서 두 번째의 굽힘 공진 모드에 따른 공진이 발생하였고, 주파수 60 Hz, 151 V의 피크투피크 개방전압, 11.7 μA의 단락전류를 갖는 전력이 생성되었다.When a current of 5.0 A flows. At the position where the permanent magnet is placed, it is calculated that an alternating magnetic field with a maximum size of 1.3 Oe was formed, and resonance occurred according to the second bending resonance mode in the power generating element, and a peak-to-peak open-circuit voltage of 60 Hz and 151 V, 11.7. Power with a short-circuit current of μA was generated.
또한, 9.2 A의 전류가 흐르는 경우에는. 영구 자석이 배치된 위치에서는 최대 0.7 Oe 크기의 교류 자기장이 형성된 것으로 계산되며, 전력 생성 소자에서 두 번째의 굽힘 공진 모드에 따른 공진이 발생하였고, 주파수 60 Hz, 330 V의 피크투피크 개방전압, 23 μA의 단락전류를 갖는 전력이 생성되었다.In addition, when a current of 9.2 A flows. In the position where the permanent magnet is placed, it is calculated that an alternating magnetic field with a maximum size of 0.7 Oe was formed, and resonance occurred according to the second bending resonance mode in the power generating element, and a peak-to-peak open-circuit voltage of 60 Hz and 330 V, 23 Power with a short-circuit current of μA was generated.
본 발명에 따른 구성을 갖는 전력 생성 소자가 기판의 길이 방향 중심이 상하로 진동하는 공진 모드를 가지도록 하는 조건은 전력 생성 소자를 구성하는 기판이나 제1 및 제2 대전 소자의 크기와 두께, 탄성 계수 및 영구 자석의 질량에 따라 달라질 수 있으며, 그러한 두 번째의 공진 모드가 일어나는 조건은 본 명세서에서 교시하는 바에 따라 본 발명의 기술 분야에서 통상의 지식을 가진 자라면 반복 실험을 통하여 설정할 수 있다.The condition for the power generating device having the configuration according to the present invention to have a resonance mode in which the center of the length direction of the substrate vibrates vertically is the size and thickness of the substrate constituting the power generating device, the first and second charging elements, and elasticity. It may vary depending on the coefficient and the mass of the permanent magnet, and the condition in which the second resonance mode occurs can be set through repeated experiments by those of ordinary skill in the art as taught herein.
한편, 마찰 대전의 원리에 따르면, 상호 접촉과 이격이라는 상호 변위에 따라 대전하는 두 물체는 그 대향하는 표면적에 따라 대전 전하량이 높아지면서 생성되는 전류의 전압이 높아질 수 있다.On the other hand, according to the principle of triboelectric charging, two objects that are charged according to mutual displacement such as mutual contact and separation may increase the amount of charged electric charges according to the opposing surface areas, thereby increasing the voltage of the generated current.
본 실시예의 전력 생성 소자(10)에서 PFA 필름(12)은 알루미늄 포일(11)과 대향하는 대전 표면(121)에 나노 스케일의 미세 요철이 형성되어 있어서, 표면적이 극대화된 것이다.In the power generation device 10 of the present embodiment, the PFA film 12 has nano-scale fine irregularities formed on the charging surface 121 facing the aluminum foil 11, so that the surface area is maximized.
도 8은 본 실시예의 전력 생성 소자(10)에서 PFA 필름(12)의 표면에 나노 스케일의 미세 요철을 형성하는 공정을 개략적으로 표시한 것이다.8 schematically shows a process of forming nano-scale fine irregularities on the surface of the PFA film 12 in the power generating device 10 of the present embodiment.
먼저, 소재가 되는 가공되지 않은 PFA 필름(12')을 마련하고, 일측 표면에 분사장치(1)에 의해 고압 가스로 나노 수준의 입자 크기를 갖는 염화나트륨 분말(2)을 고속으로 분사한다 (공정 A).First, an unprocessed PFA film 12' as a material is prepared, and sodium chloride powder 2 having a nano-level particle size is sprayed at high speed with a high-pressure gas by an injection device 1 on one surface (process A).
분사되는 염화나트륨 분말은 PFA 필름(12')의 표면에 충돌하여 튕겨져 나가기도 하지만, 상당수의 분말이 PFA 필름(12')의 표면에 박혀 있는 상태로 된다.The sprayed sodium chloride powder collides against the surface of the PFA film 12' and is bounced off, but a significant number of the powders are stuck on the surface of the PFA film 12'.
이러한 공정에 이어, 염화나트륨 분말이 박혀 있는 PFA 필름(12')을 물에 담가 둔다(공정 B). 이에 따라 수용성인 염화나트륨 분말이 물에 용해되어 PFA 필름(12')으로부터 분리된다.Following this process, the PFA film 12' in which sodium chloride powder is embedded is immersed in water (Step B). Accordingly, the water-soluble sodium chloride powder is dissolved in water and separated from the PFA film 12'.
이어서 PFA 필름(12)을 물에서 꺼내어 건조하면 (C)에 도시한 것과 같이 대전 표면(121)에 미세한 요철 구조가 형성된 상태로 된다. 도면에서는 요철을 표시하기 위하여 과장되게 크게 도시하였지만, 요철의 크기는 염화나트륨 분말의 입자 크기에 따르며, 나노 스케일의 염화나트륨 분말을 사용하는 경우에는 표면에 나노 스케일의 요철을 갖는 PFA 필름을 얻는다.Subsequently, when the PFA film 12 is taken out of water and dried, as shown in (C), a fine uneven structure is formed on the charging surface 121. In the drawings, the size of the unevenness is exaggerated to indicate the unevenness, but the size of the unevenness depends on the particle size of the sodium chloride powder, and when nanoscale sodium chloride powder is used, a PFA film having nanoscale unevenness on the surface is obtained.
반면, 본 실시예에서는 염화나트륨 분말을 PFA 필름에 분사하였지만, 염화나트륨 분말 외에 염화칼륨이나 다른 수용성의 분말을 이용할 수도 있다.On the other hand, in the present embodiment, sodium chloride powder was sprayed on the PFA film, but potassium chloride or other water-soluble powder may be used in addition to the sodium chloride powder.
도 9는 본 실시예에 따른 전력 생성 소자(10)에서 PFA 필름으로서 앞서 설명한 공정에 의해 나노 스케일의 미세 요철을 형성한 것과 형성하지 않은 것을 사용한 구성에 대하여 전압과 전류를 보여주는 그래프이다.9 is a graph showing voltage and current for a configuration in which nanoscale fine irregularities are formed and not formed by the process described above as a PFA film in the power generating device 10 according to the present embodiment.
이 그래프를 통하여 알 수 있듯이, PFA 필름(12)에 나노 스케일의 미세 요철이 형성된 구성에서는 미세 요철이 없는 경우에 비해 생성되는 전력의 전압과 전류가 매우 증대된 것을 확인할 수 있다.As can be seen from this graph, in the configuration in which the nanoscale fine irregularities are formed in the PFA film 12, it can be seen that the voltage and current of the generated power are greatly increased compared to the case where the fine irregularities are not present.
한편, 본 실시예에서는 PFA 필름에 미세 요철 구조를 형성하여 대전 면적을 확대하였지만, PFA 필름과 마주하는 반대 극성의 대전 소재인 알루미늄 박막에도 전술한 공정이나 그 밖의 방법을 이용하여 미세 요철을 형성하는 경우에 더 높은 전력 생성 효과를 얻을 수 있다.On the other hand, in this embodiment, the charging area was enlarged by forming a fine uneven structure on the PFA film, but the aluminum thin film, which is a charging material of the opposite polarity facing the PFA film, also uses the above-described process or other methods to form fine irregularities. In this case, a higher power generation effect can be obtained.
이상과 첨부된 도면을 참조하여 본 발명의 실시예를 설명하였지만, 이러한 실시예는 예시적인 것일 뿐이고, 당업자라면 청구범위에 기재된 범위 내에서 다양한 수정과 변경 및 구성 요소의 부가가 가능하고, 그러한 수정, 변경 및 구성 요소가 부가된 구성은 본 발명의 범위에 속하는 것이다.Although the embodiments of the present invention have been described with reference to the above and the accompanying drawings, these embodiments are only illustrative, and those skilled in the art can make various modifications and changes and addition of components within the scope described in the claims, such modifications , Changes and configurations to which components are added are within the scope of the present invention.

Claims (7)

  1. 전력선에 흐르는 교류 전원에 의해 형성되는 자기장으로부터 전력을 생성하는 전력 생성 소자로서, As a power generating device that generates power from a magnetic field formed by an AC power source flowing through a power line,
    자기장에 놓여 자기장의 교번에 따라 방향이 전환되는 자기력을 받는 영구 자석;A permanent magnet placed in a magnetic field and receiving a magnetic force whose direction is changed according to an alternating magnetic field;
    일단이 자유 단부로 형성되고 타단은 고정 단부로 형성되며, 자유 단부에 영구 자석이 부착되고, 소정의 탄성을 가지고 영구 자석이 받는 자기력에 의한 굽힘력을 받는 기판;A substrate having one end formed as a free end and the other end formed as a fixed end, a permanent magnet attached to the free end, and having a predetermined elasticity and receiving a bending force by a magnetic force received by the permanent magnet;
    상호 대면하는 표면을 가지며, 대면하는 표면의 상호 변위에 의해 극성이 서로 다르게 마찰 대전되는 제1 및 제2 대전 부재; 및First and second charging members having surfaces facing each other and having different polarities due to mutual displacement of the facing surfaces; And
    영구 자석, 기판, 제1 및 제2 대전 부재이 지지되는 프레임Frame on which permanent magnets, substrates, and first and second charging members are supported
    을 포함하고,Including,
    제1 대전 부재는 프레임에 고정되고 제2 대전 부재는 기판에 고정되어, 굽힘력에 의해 기판이 진동함에 따라 제1 대전 부재와 대면하는 표면에 변위가 발생함으로써 제1 및 제2 대전 부재가 대전되고, 제1 및 제2 대전 부재를 상호 접속하여 주는 도선에 의해 제1 및 제2 대전 부재 사이에 전하가 흐름으로써 전력이 생성되는 것인, 전력 생성 장치.The first charging member is fixed to the frame and the second charging member is fixed to the substrate. As the substrate vibrates due to the bending force, displacement occurs on the surface facing the first charging member, thereby charging the first and second charging members. And, electric power is generated by the flow of electric charges between the first and second charging members by a conductive wire connecting the first and second charging members to each other.
  2. 청구항 1에 있어서, The method according to claim 1,
    제1 대전 부재는 양전하로 대전되는 금속제 박막으로 이루어지고, 제2 대전 부재는 음전하로 대전되는 수지제의 패널로 이루어지며, 제2 대전 부재에는 제1 대전 부재와 대면하는 표면의 이면에 전기 전도성 재질의 박막이 부착되어 이 박막에 도선이 접속되는 것인, 전력 생성 장치.The first charging member is made of a metal thin film that is charged with a positive charge, the second charging member is made of a resin panel that is charged with a negative charge, and the second charging member is electrically conductive on the back surface of the surface facing the first charging member. A power generating device in which a thin film of material is attached and a conducting wire is connected to the thin film.
  3. 청구항 1에 있어서, The method according to claim 1,
    제1 대전 부재는 음전하로 대전되는 수지제의 패널로 이루어지며, 제1 대전 부재에는 제2 대전 부재와 대면하는 표면의 이면에 전기 전도성 재질의 박막이 부착되어 이 박막에 도선이 접속되며, 제2 대전 부재는 양전하로 대전되는 금속제의 박막으로 이루어지는 것인, 전력 생성 장치.The first charging member is made of a resin panel that is charged with a negative charge, and a thin film of an electrically conductive material is attached to the back surface of the surface facing the second charging member to the first charging member, and a conducting wire is connected to the thin film. 2 The electric power generating device, wherein the charging member is made of a metal thin film charged with a positive charge.
  4. 청구항 1에 있어서, The method according to claim 1,
    제1 대전 부재 또는 제2 대전 부재는 음전하로 대전되는 수지제의 패널로 이루어지며, 제1 대전 부재와 대면하는 표면에는 미세 요철이 형성되는 것인, 전력 생성 장치.The first charging member or the second charging member is made of a panel made of a resin that is charged with a negative charge, and fine irregularities are formed on a surface facing the first charging member.
  5. 청구항 4에 있어서, The method of claim 4,
    미세 요철은 수용성 분말을 제1 대전 부재와 대면하는 표면에 분사한 후에 수용성 분말을 물에 용해시켜 형성되는 것인, 전력 생성 장치.The fine unevenness is formed by dissolving the water-soluble powder in water after spraying the water-soluble powder on a surface facing the first charging member.
  6. 청구항 1에 있어서,The method according to claim 1,
    자기장의 교번에 따라 영구 자석이 가하는 굽힘력의 방향이 교번되면서 기판에서 중심부의 변형이 최대로 되고 자유단부의 변형이 최소로 되는 공진을 하도록 구성되는 것인, 전력 생성 장치.As the direction of the bending force applied by the permanent magnet is alternating according to the alternating magnetic field, the deformation of the center of the substrate is maximized and the deformation of the free end is minimized.
  7. 청구항 6에 있어서,The method of claim 6,
    기판의 두께, 폭, 고정 단부로부터 영구 자석이 부착되는 위치까지의 길이, 및 탄성 계수와 영구 자석의 질량 중의 어느 하나 이상은 자기장의 주파수에 따라 기판에서 중심부의 변형이 최대로 되고 자유단부의 변형이 최소로 되는 공진을 하도록 맞추어지는 것인, 전력 생성 장치.At least one of the thickness and width of the substrate, the length from the fixed end to the position where the permanent magnet is attached, and the elastic modulus and the mass of the permanent magnet maximize the deformation of the center of the substrate and the deformation of the free end depending on the frequency of the magnetic field. The power generation device, which is tailored to make the resonance to be minimal.
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