Electrostatically induced charge mirror type electrical energy generating device

Abstract

The application discloses a static induction charge mirror type electric energy generating device, which comprises at least one set of triboelectric module and at least one set of mechanical motion electric energy output module; the triboelectric module comprises a first electrode, a first friction layer, a second friction layer and a second electrode which are sequentially stacked, the first friction layer and the second friction layer are configured to contact each other under the action of the external environment; the mechanical motion electric energy output module comprises a third electrode and a fourth electrode, the third electrode and the fourth electrode are spaced apart by a second support, and the third electrode and the fourth electrode are configured to be capable of reciprocating relative motion without contact under the action of the external environment, and the first electrode or the second electrode of the triboelectric module is electrically connected with the third electrode or the fourth electrode of the mechanical motion electric energy output module; the electric energy generating device can collect mechanical energy in a free way, with large and variable amplitude and diverse sources, and further effectively output electric energy.

Description

Technical Field

[0001] This invention belongs to the field of triboelectric power generation technology, specifically relating to an electrostatic induction charge mirror-type power generation device. Background Technology

[0002] Against the backdrop of global warming and the energy crisis, reducing carbon emissions and finding renewable green energy sources are among the most pressing challenges facing the sustainable development of human civilization. Mechanical vibration is ubiquitous in people's daily lives, existing in a wide range of forms and scales. For decades, the harvesting of mechanical energy has been considered a highly attractive goal. High-performance mechanical-to-electrical energy conversion devices, due to their ability to harvest widely available mechanical energy, have become one of the important research topics in modern new energy development.

[0003] Output power is one of the important performance indicators of electrical energy generating devices based on triboelectric charging and mechanical motion. Therefore, researchers have long strived to increase output power by improving triboelectric charging efficiency or refining generator structure. Many studies have focused on increasing the amount of triboelectric charge through surface modification, alteration, and structural optimization of the triboelectric material. Others have attempted to increase device output power by introducing dielectric material layers such as polystyrene between the triboelectric layers to suppress triboelectric charge leakage. However, most current designs inherit classic structural features, where the triboelectric charging structure and the mechanical motion power generation structure reside in the same motion space. This not only causes overall structural instability but also limits the displacement amplitude and form of the moving parts, thus restricting their output power. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides an electrostatic induction charge mirror-type power generation device, which overcomes the problem that the effective mechanical movement of existing triboelectric generator devices is limited by the contact requirements of the friction surface due to the fact that the triboelectric structure and the mechanical motion structure are integrated.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] An electrostatic induction charge mirror-type power generation device includes at least one set of triboelectric modules and at least one set of mechanical motion power output modules;

[0007] The triboelectric module includes a first electrode, a first friction layer, a second friction layer, and a second electrode stacked sequentially. The first and second friction layers are separated by a first support member, and the first and second friction layers are configured to contact each other under external influence. The mechanical motion electrical energy output module includes a third electrode and a fourth electrode, which are separated by a second support member and configured to undergo non-contact reciprocating relative motion under external influence. A dielectric material is filled between the third and fourth electrodes.

[0008] The first or second electrode of the triboelectric module is electrically connected to the third or fourth electrode of the mechanical motion electrical energy output module.

[0009] The first friction layer material is a negative electrode friction material that readily gains electrons, and the second friction layer material is a positive electrode friction material that readily loses electrons. The materials of the first friction layer and the second friction layer are interchangeable. The first electrode, the second electrode, the third electrode, and the fourth electrode are all conductive materials.

[0010] Preferably, the thickness of the first or second friction layer in the triboelectric module is 10 nm to 5 mm.

[0011] Preferably, the thickness of the first or second electrode in the triboelectric module is 10 μm to 25 mm.

[0012] Preferably, the first support member is an elastic member or the first friction layer a1 and the second friction layer a2 are set as elastic bodies.

[0013] Preferably, the first electrode, the second electrode, the third electrode, and the fourth electrode are all selected from conductive metals, conductive alloys, conductive polymers and their composites, graphene, silver nanowire films, and indium tin oxide.

[0014] Preferably, the conductive metallic material is gold, silver, platinum, palladium, aluminum, nickel, copper, titanium, chromium, selenium, iron, manganese, molybdenum, tungsten, or vanadium; the conductive alloy is aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickel alloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy, or tantalum alloy; and the conductive polymer material is polyacetylene, polyphenylacetylene, polyaniline, polypyrrole, polythiophene, polyphenylene sulfide, polyquinoline, polyphthalocyanine, or their metal chelates.

[0015] Preferably, a dielectric material is filled between the third electrode and the fourth electrode, and the dielectric material is a vacuum or a gas with low polarity.

[0016] Preferably, the electron-electron-easily-obtaining negative electrode friction material is any one of polytetrafluoroethylene, polyvinylidene fluoride, polyvinyl chloride, polypropylene, polyethylene, polystyrene, polycarbonate, polyacrylonitrile, gold, silver, platinum, aluminum, nickel, copper, and iron.

[0017] Preferably, the electron-losing positive electrode friction material includes any one of polyvinyl alcohol, nylon, polymethyl methacrylate, silk, ABS, magnesium, gold, silver, platinum, aluminum, nickel, copper, and iron.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] In the electrostatic induction charge mirror-type power generation device of the present invention, there is only a single electrode electrical connection between the triboelectric charging module and the mechanical motion power output module. The two are independent of each other, and their respective movements do not affect each other. This means that the relative motion form and amplitude of the electrodes of the mechanical motion power output module are no longer limited by the problem of the contact requirement of the friction surface in existing triboelectric generator devices, which is limited by the triboelectric charging structure and the mechanical motion structure being integrated. As a result, a free, large and variable mechanical energy collection method with diverse sources can be obtained, thereby outputting electrical energy more effectively. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the principle structure of the electrostatic induction charge mirror-type power generation device of the present invention.

[0021] Figure 2 This is a schematic diagram of the principle structure of an electrostatic induction charge mirror-type power generation device with multiple sets of triboelectric modules and mechanical motion power output modules.

[0022] Figure 3 This is a structural diagram of the electrostatic induction charge mirror-type power generation device described in Example 1.

[0023] Figure 4 This is the open-circuit voltage output result of the electrostatic induction charge mirror-type power generation device described in Example 1.

[0024] Figure 5 This is a structural diagram of the electrostatic induction charge mirror-type power generation device described in Example 2.

[0025] Figure 6 This is a structural diagram of the electrostatic induction charge mirror-type power generation device described in Example 3.

[0026] Figure 7 This is the open-circuit voltage output result of the electrostatic induction charge mirror-type power generation device of the present invention when the electrodes of the mechanical motion power output module periodically move perpendicularly towards each other.

[0027] Figure 8 This is the open-circuit voltage output result of the electrostatic induction charge mirror-type power generation device of the present invention when the electrodes of the mechanical motion power output module periodically move horizontally towards each other.

[0028] The meaning of each label in the diagram:

[0029] c1 - First electrode, a1 - First friction layer, a2 - Second friction layer, c2 - Second electrode, b1 - First support member; c3 - Third electrode, c4 - Fourth electrode, b2 - Second support member, d - Dielectric material; e - Conductor; m - Modal exciter. Detailed Implementation

[0030] The electrostatic induction charge mirror-type power generation device of the present invention includes an independent triboelectric charging module and a mechanical motion power output module. The triboelectric charging module includes a first electrode c1, a first friction layer a1, a second friction layer a2, and a second electrode c2 stacked sequentially. The mechanical motion power output module includes a third electrode c3 and a fourth electrode c4. The first electrode c1 or the second electrode c2 of the triboelectric charging module is electrically connected to the third electrode c3 or the fourth electrode c4 of the mechanical motion power output module. When the triboelectric charging module is compressed under external force, its first friction layer a1 and second friction layer a2 rub against each other or come into contact, generating charge. Since one end electrode of the triboelectric charging module is electrically connected to one end electrode of the mechanical motion power output module, the charge generated by the triboelectric charging module is transferred to one end electrode of the mechanical motion power output module. Simultaneously, due to the electrostatic mirror effect, an opposite induced charge is generated on the other electrode of the mechanical motion power output module, creating a potential difference between the third electrode c3 and the fourth electrode c4. As external force causes the third electrode c3 and the fourth electrode c4 of the mechanical motion electrical energy output module to reciprocate relative to each other, a periodic current signal can be generated in the external circuit.

[0031] This invention allows one electrode in the triboelectric generation module to be connected to an electrode in the mechanical motion electrical energy output module via a wire e, or allows one electrode in the triboelectric generation module to be used as an electrode in the mechanical motion electrical energy output module, such as... Figure 2 In this process, c1 and c3 can be combined into one electrode.

[0032] The present invention includes at least one set of both the triboelectric generation module and the mechanical motion electrical energy output module. Figure 1 , Figure 3 , Figure 5 and Figure 6Each consists of one set of triboelectric generating modules and one set of mechanical motion energy output modules. When there are two or more sets of triboelectric generating modules, these modules are stacked sequentially. When there are two or more sets of mechanical motion energy output modules, each set of mechanical motion energy output modules is connected to the triboelectric generating modules via wires, which is equivalent to multiple mechanical motion energy output modules connected in parallel to the entire triboelectric generating module. Figure 2 The diagram shows the connection of three sets of triboelectric generating modules and two sets of mechanical motion electrical energy output modules.

[0033] A gap is provided between the first friction layer a1 and the second friction layer a2, specifically separated by a first support member b1 connecting the first friction layer a1 and the second friction layer a2. Furthermore, the first friction layer a1 and the second friction layer a2 are configured to contact each other under external forces. Specifically, the first support member b1 can be an elastic element, or the first friction layer a1 and the second friction layer a2 can be an elastic body, allowing them to contact each other under external pressure.

[0034] The third electrode c3 and the fourth electrode c4 are separated by a second support member b2, which is an elastic member. Figure 5 ) or non-elastic components ( Figure 3 The third electrode c3 and the fourth electrode c4 are configured to undergo non-contact reciprocating relative motion under external influence. The relative motion can be any way that changes the capacitance between the two electrodes, such as moving towards each other, translating, or changing the relative tilt angle, and the amplitude of the motion is unlimited. The space between the third electrode c3 and the fourth electrode c4 is filled with a dielectric material d, which is a vacuum or a gas with low polarity (such as air, nitrogen, oxygen, helium, argon, or carbon dioxide).

[0035] The first friction layer a1 is a negative electrode friction material that readily gains electrons, including any one of polytetrafluoroethylene, polyvinylidene fluoride, polyvinyl chloride, polypropylene, polyethylene, polystyrene, polycarbonate, polyacrylonitrile, gold, silver, platinum, aluminum, nickel, copper, and iron.

[0036] The second friction layer a2 material is a positive electrode friction material that easily loses electrons, including any one of polyvinyl alcohol, nylon, polymethyl methacrylate, silk, ABS, magnesium, gold, silver, platinum, aluminum, nickel, copper, and iron.

[0037] The first electrode c1, the second electrode c2, the third electrode c3, and the fourth electrode c4 are all conductive materials, such as conductive metals (gold, silver, platinum, palladium, aluminum, nickel, copper, titanium, chromium, selenium, iron, manganese, molybdenum, tungsten, or vanadium), conductive alloys (aluminum alloys, titanium alloys, magnesium alloys, beryllium alloys, copper alloys, zinc alloys, manganese alloys, nickel alloys, lead alloys, tin alloys, cadmium alloys, bismuth alloys, indium alloys, gallium alloys, tungsten alloys, molybdenum alloys, niobium alloys, or tantalum alloys), conductive polymer materials (polyacetylene, polyphenylacetylene, polyaniline, polypyrrole, polythiophene, polyphenylene sulfide, polyquinoline, polyphthalocyanine and their metal chelates) and their composite materials, graphene, silver nanowire films, and indium tin oxide.

[0038] In this invention, conductor e can be any material of any shape and length that can achieve electrical connection, and the material can be the same as the material of the four electrodes mentioned above.

[0039] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0040] For those skilled in the art, the specific meaning of the above terms in this technical solution can be understood according to the specific circumstances. Unless otherwise stated, directional terms such as "upper," "lower," "bottom," and "top" are generally defined based on the drawing surface of the corresponding figure, while "inner" and "outer" are defined based on the outline of the corresponding figure.

[0041] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. Furthermore, it should be understood that the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] Example 1

[0043] The electrostatic induction charge mirror-type power generation device structure disclosed in this embodiment is shown below. Figure 3As shown, the device includes a triboelectric generation module and a mechanical motion power output module. The triboelectric generation module comprises a first electrode c1, a first friction layer a1, a second friction layer a2, and a second electrode c2 stacked sequentially. The first friction layer a1 and the second friction layer a2 are separated by a first support member b1 (stainless steel spring) located at the edge. The entire triboelectric generation module is supported on a modal exciter m. The mechanical motion power output module includes a third electrode c3 or a fourth electrode c4. The third electrode c3 is supported above the first electrode c1 by an acrylic plate and is connected to the first electrode c1 by a wire e. The fourth electrode c4 is supported above the third electrode c3 by a second support member b2 and is fixed, while the third electrode c3 moves under the action of the modal exciter.

[0044] In this embodiment, the first friction layer a1, the first electrode c1, the second electrode c2, and the third electrode c3 are all made of square (5cm × 5cm) aluminum foil with a thickness of 20μm. The second friction layer a2 is made of square (5cm × 5cm) polytetrafluoroethylene film with a thickness of 100μm. The fourth electrode c4 is made of a large-area square (20cm × 20cm) stainless steel plate with a thickness of 5mm and polished on one side. This electrode is supported on the ground and grounded.

[0045] For the power generation device in this embodiment, the materials of the first friction layer a1 and the second friction layer a2 of the triboelectric module that come into contact with each other have a difference in the ability to gain and lose electrons through friction. This makes it so that after the two surfaces come into contact and separate under the action of the modal exciter, the friction layer surfaces carry equal amounts of opposite charges. These charges are conducted to one electrode of the mechanical motion power output module through a connecting conductor and induce charges on the other fixed electrode. The opening and closing of the two electrodes of the mechanical motion power output module changes their equivalent capacitance, thereby changing the output voltage waveform between the electrodes and thus outputting power to the outside.

[0046] Figure 4 The embodiment shows the spectral lines of the voltage waveform output between the third electrode c3 and the fourth electrode c4 of the electrostatic induction charge mirror-type power generator under external 20Hz vibration excitation. Figure 4 a to 4d represent the output voltage spectra when the initial electrode spacing of the mechanical motion electrical energy output module is 4cm, 5cm, 6cm, and 7cm, respectively. It can be seen that... Figure 4 The consistent amplitude characteristics of the spectral lines from a to 4d indicate that the output voltage of the mechanical motion power output module is independent of the electrode spacing, and changes in the electrode spacing of the mechanical motion power output module will not affect its output voltage.

[0047] Example 2

[0048] The electrostatic induction charge mirror-type power generation device structure disclosed in this embodiment is shown below. Figure 5 As shown, the device includes a triboelectric generation module and a mechanical motion power output module. The triboelectric generation module comprises a first electrode c1, a first friction layer a1, a second friction layer a2, and a second electrode c2, which are stacked sequentially. The first friction layer a1 and the second friction layer a2 are supported and separated by a first support member b1 (stainless steel spring) located at the edge. The mechanical motion power output module includes movable electrode components (a third electrode c3 and a fourth electrode c4), which are separated by a relatively stiff long spring.

[0049] In this embodiment, a square (5cm×5cm) aluminum foil with a thickness of 20μm is used as the material for the first friction layer a1, the first electrode c1 and the second electrode c2 of the triboelectric module. A square (5cm×5cm) polytetrafluoroethylene film with a thickness of 100μm is used as the second friction layer a2 of the triboelectric module. A square (5cm×5cm) copper foil with a thickness of 50μm is used as the third electrode c3 and the fourth electrode c4. The second electrode c2 and the third electrode c3 are connected by double-sided conductive copper foil tape.

[0050] When an external force is applied to the plate on the upper side of c1, c3 follows the triboelectric module and the fixed fourth electrode c4 in an opening and closing motion.

[0051] For the power generation device in this embodiment, the materials of the surfaces of the first friction layer a1 and the second friction layer a2 of the triboelectric module that come into contact with each other need to have a difference in the ability to gain and lose electrons through friction. This makes it so that after the two surfaces come into contact and separate under the action of intermittent pressing stress on the upper side, the surfaces of the friction layers carry equal amounts of opposite charges. These charges are conducted to one electrode of the mechanical motion power output module through a connecting conductor, and induce charges on the fixed electrode on the other side. The mutual movement of the two electrodes of the mechanical motion power output module changes their equivalent capacitance, thereby changing the output voltage waveform between the electrodes, and thus outputting power to the outside.

[0052] Example 3

[0053] The electrostatic induction charge mirror-type power generation device structure disclosed in this embodiment is shown below. Figure 6 As shown, the structure is the same as that of Embodiment 2, except that the triboelectric module and the mechanical motion electrical energy output module are placed separately, and the second electrode c2 and the third electrode c3 are connected by the wire e.

[0054] Figure 7 The diagram shows the open-circuit voltage waveform output between C3 and C4 when the external force periodically presses the friction-generating module to generate frictional charge, causing the third electrode C3 and the fourth electrode C4 of the mechanical motion electrical energy output module to periodically move perpendicularly towards each other.

[0055] Figure 8 The figure shows the open-circuit voltage waveform output between C3 and C4 when the external force periodically presses the friction-generating module to generate frictional charge, causing the third electrode C3 and the fourth electrode C4 of the mechanical motion electrical energy output module to periodically move horizontally towards each other.

[0056] from Figure 3 , Figure 7 and Figure 8 It can be seen that by separating the triboelectric generation module and the mechanical motion power output module, the relative motion form and amplitude of the electrodes of the mechanical motion power output module are no longer limited by the problem that the contact requirements of the friction surface in existing triboelectric generator devices, which are integrated with the triboelectric generation structure and the mechanical motion structure, limit their effective mechanical motion. The power generation device of the present invention can obtain a free, large and variable mechanical energy collection method with diverse sources, thereby outputting power more effectively.

Claims

1. A static-induced charge mirror-type power generation device, characterized in that, The device comprises at least one triboelectric module and at least one mechanical motion electric energy output module. The triboelectric module comprises a first electrode (c1), a first triboelectric layer (a1), a second triboelectric layer (a2) and a second electrode (c2) which are stacked in sequence, the first triboelectric layer (a1) and the second triboelectric layer (a2) are separated by a first support (b1), and the first triboelectric layer (a1) and the second triboelectric layer (a2) are configured to contact each other under external action; the mechanical motion electric energy output module comprises a third electrode (c3) and a fourth electrode (c4), the third electrode (c3) and the fourth electrode (c4) are separated by a second support (b2), and the third electrode (c3) and the fourth electrode (c4) are configured to reciprocating relative motion under external action; the third electrode (c3) and the fourth electrode (c4) are filled with a medium material (d). The first electrode (c1) or the second electrode (c2) of the triboelectric module is electrically connected with the third electrode (c3) or the fourth electrode (c4) of the mechanical motion electric energy output module. The first triboelectric layer (a1) is a negative triboelectric material with easy electrons, the second triboelectric layer (a2) is a positive triboelectric material with easy electrons, and the materials of the first triboelectric layer (a1) and the second triboelectric layer (a2) can be interchanged; the first electrode (c1), the second electrode (c2), the third electrode (c3) and the fourth electrode (c4) are all conductive materials.

2. The electrostatically induced charge mirror type electrical energy generating device as defined in claim 1, wherein, The thickness of the first triboelectric layer (a1) or the second triboelectric layer (a2) in the triboelectric module is 10 nm to 5 mm.

3. The electrostatically induced charge mirror type electrical energy generating device as defined in claim 1, wherein, The thickness of the first electrode (c1) or the second electrode (c2) in the triboelectric module is 10 μm to 25 mm.

4. The electrostatically induced charge mirror type electrical energy generating device as defined in claim 1, wherein, The first support (b1) is an elastic member or the first triboelectric layer (a1) and the second triboelectric layer (a2) are configured as an elastic body.

5. The electrostatically induced charge mirror type electrical energy generating device as defined in claim 1, wherein, The first electrode (c1), the second electrode (c2), the third electrode (c3) and the fourth electrode (c4) are any one of conductive metal, conductive alloy, conductive polymer material and its composite material, graphene, silver nanowire film and indium tin oxide.

6. The electrostatically induced charge mirror type electrical energy generating device of claim 5, wherein, The conductive metal material is gold, silver, platinum, palladium, aluminum, nickel, copper, titanium, chromium, selenium, iron, manganese, molybdenum, tungsten or vanadium; the conductive alloy is aluminum alloy, titanium alloy, magnesium alloy, beryllium alloy, copper alloy, zinc alloy, manganese alloy, nickel alloy, lead alloy, tin alloy, cadmium alloy, bismuth alloy, indium alloy, gallium alloy, tungsten alloy, molybdenum alloy, niobium alloy or tantalum alloy; the conductive polymer material is polyacetylene, polyphenylacetylene, polyaniline, polypyrrole, polythiophene, poly (p-phenylene sulfide), polyquinoline, phthalocyanine and its metal chelate.

7. The electrostatically induced charge mirror type electrical energy generating device as defined in claim 1, wherein, The third electrode (c3) and the fourth electrode (c4) are filled with a medium material (d), and the medium material (d) is vacuum or a gas with small polarity.

8. The electrostatically induced charge mirror type electrical energy generating device of claim 1, wherein, The negative triboelectric material with easy electrons is any one of polytetrafluoroethylene, polyvinylidene fluoride, polyvinyl chloride, polypropylene, polyethylene, polystyrene, polycarbonate, polyacrylonitrile, gold, silver, platinum, aluminum, nickel, copper and iron.

9. The electrostatically induced charge mirror type electrical energy generating device as defined in claim 1, wherein, The positive friction material of the volatile electron includes any one of polyvinyl alcohol, nylon, polymethyl methacrylate, silk, ABS, magnesium, gold, silver, platinum, aluminum, nickel, copper, and iron.

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