CN112615559A - Ultra-low speed water flow energy acquisition device and acquisition method based on friction power generation - Google Patents
Ultra-low speed water flow energy acquisition device and acquisition method based on friction power generation Download PDFInfo
- Publication number
- CN112615559A CN112615559A CN202011561945.2A CN202011561945A CN112615559A CN 112615559 A CN112615559 A CN 112615559A CN 202011561945 A CN202011561945 A CN 202011561945A CN 112615559 A CN112615559 A CN 112615559A
- Authority
- CN
- China
- Prior art keywords
- water flow
- layer
- friction
- ultra
- flow energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention provides an ultralow-speed water flow energy acquisition device based on friction power generation, which comprises a water flow energy conversion module and an ultralow-frequency energy acquisition module, wherein the water flow energy conversion module comprises a fixed support, waterwheel wheels, a central shaft and a rotary shifting sheet, the central shaft is connected with the fixed support, the waterwheel wheels are arranged on the central shaft in a penetrating manner, and the rotary shifting sheet is connected with the circumferential edges of the waterwheel wheels; the ultra-low frequency energy acquisition module comprises a support frame, an elastic shifting sheet and a friction nano generator, wherein the friction nano generator is positioned on the support frame and comprises an upper friction layer and a lower friction layer, and the upper friction layer and the lower friction layer are electrically connected with an output lead; one end of the elastic shifting sheet is connected with the supporting frame, and the other end of the elastic shifting sheet is in contact with the surface of the friction nano generator in an initial state. Compared with the prior art, the invention has the advantages of low price and easy acquisition of manufacturing materials, simple structural design, high energy conversion efficiency, stable output electric energy and the like, and is not influenced by water wave frequency.
Description
Technical Field
The invention relates to the technical field of energy collection, in particular to collection of ultra-low-speed water flow energy, and particularly relates to an ultra-low-speed water flow energy collection device and method based on friction power generation.
Background
With the rapid development of social economy and the continuous improvement of living standard of people, the demand for electric energy is more and more large, and the problem of electric energy shortage is increasingly prominent. Energy conservation and improvement of energy utilization have become important measures for sustainable economic development in our country. In our daily life, the mechanical energy of the surrounding environment, such as wind energy, ocean energy, water flow energy and biomechanical energy, is widely distributed and abundant, but the backward energy collection technology and the low energy conversion rate greatly limit the development and utilization of the low-frequency environment vibration energy.
In 2012, the friction nano-generator (TENG) invented by the wangzhining yard team provides a brand new mode for effectively collecting environmental mechanical energy. Based on the coupling of the friction power generation effect and the static induction effect, the friction nano generator can convert mechanical energy into electric energy to be output with high efficiency and low cost. Although the friction nano generator has a good application prospect in the field of low-frequency environment mechanical energy collection, in the prior art, the realization of efficient collection of ultra-low-speed water flow energy is still a great challenge.
Disclosure of Invention
The invention aims to provide an energy acquisition device capable of efficiently acquiring ultralow-speed water flow energy aiming at the conditions that the water flow speed is large in random fluctuation, part of river flow speed is ultralow and the like.
In order to achieve the above and other related objects, the present invention provides an ultra-low speed water flow energy collection device based on friction power generation, including a water flow energy conversion module and an ultra-low frequency energy collection module, where the water flow energy conversion module is located at one side of the ultra-low frequency energy collection module, the water flow energy conversion module includes a fixed bracket, a waterwheel wheel, a central shaft and a rotation shifting piece, the central shaft is connected with the fixed bracket, the waterwheel wheel is inserted through the central shaft and can rotate around the central shaft, and one end of the rotation shifting piece is connected with a circumferential edge of the waterwheel wheel; the ultra-low frequency energy acquisition module comprises a support frame, an elastic shifting sheet and a friction nano generator, wherein the friction nano generator is positioned on the support frame and comprises an upper friction layer and a lower friction layer, and the upper friction layer and the lower friction layer are electrically connected with an output lead; the elastic shifting sheet is positioned above the friction nano generator, one end of the elastic shifting sheet is connected with the supporting frame, and the other end of the elastic shifting sheet is in contact with the surface of the friction nano generator in an initial state;
when the waterwheel wheel rotates under the action of water flow, the elastic shifting piece is flapped by the rotary shifting piece positioned on the waterwheel wheel so as to enable the elastic shifting piece to generate elastic deformation, and the elastic shifting piece moves downwards under the action of elastic potential energy to flap the friction nano generator so as to enable the upper friction layer and the lower friction layer of the friction nano generator to be in contact and separation circulation, thereby generating electric energy and outputting the electric energy.
Optionally, the fixed support is height-adjustable, and a height adjusting knob is arranged on the fixed support.
Optionally, the number of the rotating shifting pieces is multiple, and the multiple rotating shifting pieces are uniformly distributed at intervals on the circumferential edge of the waterwheel wheel.
Optionally, the ultra-low-speed water flow energy collecting device further comprises a base, and the supporting frame and the fixing support are fixed on the base.
Optionally, the upper friction layer and the lower friction layer both comprise conductive material layers, at least one of the upper friction layer and the lower friction layer further comprises a micro-nano structure film layer, the micro-nano structure film layer is formed by spraying a fibroin solution on the surface of the substrate and drying, and the upper friction layer and the lower friction layer are separated from each other through a spacing layer.
Optionally, the material of the conductive material layer includes any one or more of gold, silver, copper, aluminum, and ITO conductive glass.
Optionally, the substrate comprises any one or more of polyethylene terephthalate, polyimide, and polytetrafluoroethylene, and the spacer layer comprises a PDMS layer.
Optionally, the friction nanogenerator is prepared by a process comprising:
s1: mixing deionized water and silk protein powder according to a preset proportion and uniformly stirring to obtain a uniform and stable silk protein solution;
s2: uniformly spraying the obtained fibroin solution on the surface of a substrate, and fixing a conductive material layer on the other surface of the substrate;
s3: placing the substrate sprayed with the fibroin solution in a drying box for curing treatment, and repeating the steps S2 and S3 for multiple times to obtain a conductive material layer/substrate/fibroin film;
s4: cutting the obtained conductive material layer/substrate/fibroin film into a plurality of conductive material layers/substrates/fibroin thin sheets with the same size;
s5: assembling two conductive material layers/substrates/fibroin sheets, the conductive material layers/the substrate sheets and a spacing layer into a friction nano generator, wherein the spacing layer is positioned in the middle, and two opposite surfaces of the spacing layer are respectively fixed with fibroin in the conductive material layers/the substrates in the conductive material layers/the fibroin sheets.
Optionally, the mass percentage of the deionized water and the silk protein powder is 20: 1-50: 1, wherein the time of each spraying is 5-10 seconds, the curing temperature in a drying oven is 70-100 ℃, and the thickness of the conductive material layer/substrate sheet is 100-150 mu m.
The invention also provides an ultra-low speed water flow energy acquisition method, which is carried out based on the ultra-low speed water flow energy acquisition device based on friction power generation in any scheme, when the waterwheel wheel rotates under the action of water flow, the rotating poking piece positioned on the waterwheel wheel beats the elastic poking piece to enable the elastic poking piece to generate elastic deformation, and the elastic poking piece moves downwards under the action of elastic potential energy to beat the friction nano generator to enable the upper friction layer and the lower friction layer to generate contact and separation circulation, so that electric energy is generated and output.
As described above, the ultra-low speed water flow energy collecting device and method based on friction power generation according to the present invention have the following beneficial effects: through the improved structural design, the waterwheel wheel is driven to rotate by water flow, so that the elastic shifting piece presses and forces two friction layers of the friction nano generator to generate contact friction to generate electric energy output in the downward movement process, and the energy collection of the flowing energy of any ultra-low-speed water is realized. Because the upper limit position of the elastic poking sheet is irrelevant to the frequency of water flow energy, the force of the friction nano generator for flapping every time is fixed, the contact-separation time of a friction layer is reduced, and the output of the energy collecting device is not influenced by the ultralow frequency of the water flow energy any more, so that high-efficiency and stable electric energy output can be generated. Compared with the existing water flow energy collection technology, the invention has the advantages of low price and easy acquisition of manufacturing materials, simple structural design, high energy conversion efficiency, stable output electric energy without being influenced by water wave frequency and the like, can effectively collect low-frequency water flow energy in the environments of streams, canals, gardens and the like, and can efficiently convert the low-frequency water flow energy into electric energy for output.
Drawings
Fig. 1 shows a schematic structural diagram of an ultra-low speed water flow energy collecting device based on friction power generation provided by the invention.
Fig. 2 is a schematic structural view of the triboelectric nanogenerator of fig. 1.
Description of the element reference numerals
1 water flow energy conversion module
11 fixed support
12 waterwheel wheel
13 center shaft
14 rotating shifting piece
2 ultralow frequency energy acquisition module
21 support frame
22 elastic shifting piece
23 friction nano generator
231 layer of conductive material
232 base
233 fibroin
234 spacer layer
3 output conductor
4 base
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1-2. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship may be made without substantial technical changes.
As shown in fig. 1 to 2, the present invention provides an ultra-low speed water flow energy harvesting device based on friction power generation, the ultra-low speed water flow energy acquisition device comprises a water flow energy conversion module 1 and an ultra-low frequency energy acquisition module 2, the water flow energy conversion module 1 is positioned at one side of the ultralow frequency energy acquisition module 2, the water flow energy conversion module 1 comprises a fixed bracket 11, waterwheel wheels 12, a central shaft 13 and a rotary shifting sheet 14, the central shaft 13 is connected with the fixed bracket 11, the waterwheel wheel 12 is arranged on the central shaft 13 in a penetrating way and can rotate around the central shaft 13, the rotary paddle 14 is connected at one end to the circumferential edge of the waterwheel wheel 12 (i.e. the rotating surface of the waterwheel wheel 12), the water flow energy conversion module 1 can be driven by low-frequency water flow energy to work, so that the water flow energy is directly converted into mechanical energy for rotating the device; the ultra-low frequency energy acquisition module 2 comprises a support frame 21, an elastic shifting sheet 22 and a friction nano generator 23, wherein the support frame 21 can comprise a longitudinal support part and a horizontal support part connected with the longitudinal support part, the friction nano generator 23 is positioned on the horizontal support part of the support frame 21, the friction nano generator 23 comprises an upper friction layer and a lower friction layer, and the upper friction layer and the lower friction layer are electrically connected with the output lead 3; the elastic shifting piece 22 is positioned above the friction nano-generator 23, one end of the elastic shifting piece is connected with the longitudinal supporting part of the supporting frame 21, and the other end (free end) of the elastic shifting piece is in contact with the surface of the friction nano-generator 23 in an initial state;
when the ultra-low speed water flow energy acquisition device based on friction power generation is used, the ultra-low speed water flow energy acquisition device based on friction power generation is placed in water flow, the waterwheel wheel 12 is partially immersed in water, when the waterwheel wheel 12 rotates under the action of water flow, the rotary shifting piece 14 on the waterwheel wheel 12 beats the elastic shifting piece 22 to enable the elastic shifting piece 22 to generate elastic deformation (the rotary shifting piece 14 usually beats the elastic shifting piece 22 from bottom to top), the elastic shifting piece 22 moves downwards under the action of elastic potential energy to beat the friction nano-generator 23, so that contact and separation circulation is generated between an upper friction layer and a lower friction layer of the friction nano-generator 23, and electric energy is generated and output. Specifically, the rotating paddle 14 beats the elastic paddle 22 to force the elastic paddle 22 to leave the balance position, and after the elastic paddle 22 is shifted to the high upper limit position, the elastic paddle moves downwards rapidly under the action of the elastic force of the elastic paddle and performs reciprocating damping motion near the balance position, and the elastic paddle 22 presses and forces two friction layers of the friction nano generator 23 to generate contact friction to generate electric energy output in the downward motion, so that the energy collection of any ultralow-speed water flow kinetic energy is realized. Because the upper limit position of the elastic poking sheet is independent of the frequency of the water flow energy, the force for beating the friction nano generator each time is fixed, the contact-separation time of the friction layer is reduced, and the output of the energy collecting device is not influenced by the ultralow frequency of the water flow energy any more, so that the high-efficiency and stable electric energy output can be generated. Compared with the existing water flow energy collection technology, the invention has the advantages of low price and easy acquisition of manufacturing materials, simple structural design, high energy conversion efficiency, stable output electric energy without being influenced by water wave frequency and the like, can effectively collect low-frequency water flow energy in the environments of streams, canals, gardens and the like, and can efficiently convert the low-frequency water flow energy into electric energy for output.
As an example, the fixing bracket 11 may be a structure including at least two vertical columns, and the central shaft 13 spans between the two vertical columns, or the fixing bracket 11 may also be another structure, which is not limited in particular. The fixed bracket 11 can be installed and fixed near a ridge or a stream in shallow water. In one example, the height of the fixed bracket 11 is adjustable, and the height adjusting knob is arranged on the fixed bracket 11, so that the height of the waterwheel wheel 12 can be flexibly adjusted according to the water level condition.
To achieve efficient energy collection, the rotary shifting piece 14 is provided in plural, the plural rotary shifting pieces 14 are uniformly distributed at intervals on the circumferential edge of the waterwheel wheel 12, the rotary shifting piece 14 can be fixed to the circumferential edge of the waterwheel wheel 12 by a fastener such as a screw, and the rotary shifting piece 14 can be a metal piece with certain rigidity, so that the metal piece has enough rigidity to flap the elastic shifting piece 22. The elastic shifting piece 22 is also a strip-shaped metal piece with certain rigidity, and the support frame 21 is fixed at a position right in front of the rotary shifting piece 14, which can contact the elastic shifting piece 22.
In order to facilitate the fixation of each structure, as an example, the ultra-low speed water flow energy harvesting device further comprises a base 4, and the supporting frame 21 and the fixing bracket 11 are fixed on the base 4. The base 4 and the supporting frame 21 may be an integral structure, and in this embodiment, the two parts are separately described for convenience of description. The base 4, the supporting frame 21 and the fixing bracket 11 can also be detachably connected, so that the height of the waterwheel wheel 12 can be adjusted by adopting the bases 4 with different thicknesses when needed.
The friction nanogenerator 23 has a great influence on energy collection efficiency, the upper friction layer and the lower friction layer usually comprise two friction materials with large triboelectric sequence difference, for example, the two friction materials can be fibroin-polyethylene terephthalate (PET), aluminum-Polydimethylsiloxane (PDMS), aluminum-polytetrafluoroethylene (Teflon) and other materials, namely, in the two friction layers, the surfaces in mutual friction contact are the surface where the fibroin is located and the PET, or aluminum and PDMS, or aluminum and polytetrafluoroethylene, and can also be other materials. In an example, the upper friction layer and the lower friction layer both include the conductive material layer 231, and at least one of the upper friction layer and the lower friction layer further includes a micro-nano structure thin film layer, the micro-nano structure thin film layer is formed by spraying a fibroin 233 solution on the surface of the substrate 232 and drying the fibroin 233 solution, that is, the fibroin 233 particles are included on the surface of the substrate 232, and the upper friction layer and the lower friction layer are spaced apart from each other by the spacer layer 234, so that the upper friction layer and the lower friction layer can realize continuous circulation of a vertical contact-separation mode, and a specific structure can be referred to fig. 2.
As an example, the material of the conductive material layer 231 includes any one or more of gold, silver, copper, aluminum, and ITO conductive glass. The substrate 232 includes any one or more of polyethylene terephthalate, polyimide, and polytetrafluoroethylene, and the spacer layer 234 includes a PDMS (polydimethylsiloxane) layer.
In a preferred example, the process of manufacturing the triboelectric nanogenerator shown in fig. 2 comprises:
s1: mixing deionized water and silk protein powder according to a preset proportion and uniformly stirring to obtain a uniform and stable silk protein solution; preferably, the mass percentage of the deionized water to the silk protein powder is 20: 1-50: 1, preferably 40:1, for example, measuring 300ml of deionized water by using a measuring cylinder, and uniformly stirring the deionized water and the silk protein powder by using a glass rod in a beaker according to the ratio of the deionized water to the silk protein powder of 40:1 to form a uniform and stable silk protein solution;
s2: uniformly spraying the obtained fibroin solution on the surface of a substrate, wherein the substrate comprises but is not limited to a PET substrate, and a conductive material layer is fixed on the other surface of the substrate and comprises but is not limited to an ITO film; the spraying mode can be a pneumatic atomization spraying mode or an electrostatic spraying mode, for example, the obtained fibroin solution is poured into a spraying pot, the PET layer of the ITO/PET film is subjected to spraying modification, so that the fibroin solution is uniformly sprayed on the surface of the PET layer, and the single spraying time can be 5-10 seconds, preferably 10 seconds;
s3: placing the substrate sprayed with the fibroin solution in a drying box for curing treatment, and repeating the steps S2 and S3 for multiple times to obtain a conductive material layer/substrate/fibroin film; the temperature of curing in the drying oven is 70-100 ℃, preferably 80 ℃, the steps S2 and S3 are repeated for 3 times, the time of curing for the first two times is 10 minutes, the time of heating and curing for the last time is increased to 40 minutes, and finally the ITO (conductive material layer)/PET (substrate)/SF (fibroin) film is obtained;
s4: cutting the obtained conductive material layer/substrate/fibroin film into a plurality of conductive material layers/substrates/fibroin sheets with the same size, such as a plurality of rectangular sheets of 6cm × 6cm with the same size;
s5: assembling two conductive material layers/substrates/fibroin sheets, conductive material layers/substrate sheets and a spacing layer into a friction nano generator, wherein the spacing layer is positioned in the middle, two opposite surfaces of the spacing layer are respectively fixed with fibroin in the conductive material layers/substrates/fibroin sheets and substrates in the conductive material layers/substrate sheets, namely the surface where the fibroin is positioned and the substrates in the other sheet are mutual friction surfaces; for example, two sheets of ITO/PET/SF sheets, an ITO/PET sheet, and a PDMS block are assembled into a friction nano-generator, the PDMS block is used as a spacer layer, two ends of the PDMS block are respectively bonded and fixed to the PET side and the SF side of the sheet, an output wire is directly connected to the ITO conductive layer, and for example, the output wire is bonded and fixed to the ITO conductive layer by a double-sided adhesive tape.
As an example, the thickness of the conductive material layer/substrate sheet is 100-150 μm, such as the thickness of the ITO/PET film is 125 μm.
Of course, the friction nano-generator may have other structures, and may also be manufactured based on other methods, and in this embodiment, the limitation is not strictly made, and the structures are not expanded one by one.
The ultra-low speed water flow energy acquisition device based on friction power generation can be placed in rivers and rural creeks, can realize the energy acquisition of the flow energy of any ultra-low speed water flow, can be perfectly compatible with the natural environment, and has great economic and social values.
The invention also provides an ultra-low-speed water flow energy acquisition method which is carried out based on the ultra-low-speed water flow energy acquisition device based on friction power generation in any scheme, so the introduction of the ultra-low-speed water flow energy acquisition device based on friction power generation can be fully cited, and is not repeated for the sake of brevity. The energy acquisition method comprises the steps that the ultra-low-speed water flow energy acquisition device based on friction power generation is placed in an environment where energy is to be acquired, so that the wheels of the waterwheel are partially immersed in water flow, when the wheels of the waterwheel rotate under the action of water flow, the elastic poking piece is flapped by the rotating poking piece positioned on the wheels of the waterwheel, so that the elastic poking piece generates elastic deformation, and the elastic poking piece moves downwards under the action of elastic potential energy to flap the friction nano-generator, so that the upper friction layer and the lower friction layer are in contact and separation circulation, and electric energy is generated and output. Because the upper limit position of the elastic poking sheet is irrelevant to the frequency of water flow energy, the force of the friction nano generator for flapping every time is fixed, the contact-separation time of a friction layer is reduced, and the output of the energy collecting device is not influenced by the ultralow frequency of the water flow energy any more, so that high-efficiency and stable electric energy output can be generated. Compared with the existing water flow energy collection technology, the collection device based on the invention can collect the energy of any ultralow-speed water flow energy, has the advantages of high energy conversion efficiency, stable output electric energy which is not influenced by water wave frequency and the like, can effectively collect the low-frequency water flow energy in the environments of streams, canals, gardens and the like, and can efficiently convert the low-frequency water flow energy into the electric energy for output.
In summary, the invention provides an ultra-low speed water flow energy collection device based on friction power generation, which comprises a water flow energy conversion module and an ultra-low frequency energy collection module, wherein the water flow energy conversion module is positioned on one side of the ultra-low frequency energy collection module, the water flow energy conversion module comprises a fixed support, a waterwheel wheel, a central shaft and a rotating shifting sheet, the central shaft is connected with the fixed support, the waterwheel wheel is arranged on the central shaft in a penetrating manner and can rotate around the central shaft, and one end of the rotating shifting sheet is connected with the circumferential edge of the waterwheel wheel; the ultra-low frequency energy acquisition module comprises a support frame, an elastic shifting sheet and a friction nano generator, wherein the friction nano generator is positioned on the support frame and comprises an upper friction layer and a lower friction layer, and the upper friction layer and the lower friction layer are electrically connected with an output lead; the elastic shifting sheet is positioned above the friction nano generator, one end of the elastic shifting sheet is connected with the supporting frame, and the other end of the elastic shifting sheet is in contact with the surface of the friction nano generator in an initial state; when the waterwheel wheel rotates under the action of water flow, the elastic shifting piece is flapped by the rotary shifting piece positioned on the waterwheel wheel so as to enable the elastic shifting piece to generate elastic deformation, and the elastic shifting piece moves downwards under the action of elastic potential energy to flap the friction nano generator so as to enable the upper friction layer and the lower friction layer of the friction nano generator to be in contact and separation circulation, thereby generating electric energy and outputting the electric energy. Compared with the prior art, the invention has the advantages of low price and easy acquisition of manufacturing materials, simple structural design, high energy conversion efficiency, stable output electric energy which is not influenced by water wave frequency and the like, can effectively collect low-frequency water flow energy in environments such as streams, canals, gardens and the like, and can efficiently convert the low-frequency water flow energy into electric energy for output. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. An ultra-low speed water flow energy acquisition device based on friction power generation is characterized by comprising a water flow energy conversion module and an ultra-low frequency energy acquisition module, wherein the water flow energy conversion module is positioned on one side of the ultra-low frequency energy acquisition module and comprises a fixed support, a waterwheel wheel, a central shaft and a rotating shifting piece, the central shaft is connected with the fixed support, the waterwheel wheel is arranged on the central shaft in a penetrating way and can rotate around the central shaft, and one end of the rotating shifting piece is connected with the circumferential edge of the waterwheel wheel; the ultra-low frequency energy acquisition module comprises a support frame, an elastic shifting sheet and a friction nano generator, wherein the friction nano generator is positioned on the support frame and comprises an upper friction layer and a lower friction layer, and the upper friction layer and the lower friction layer are electrically connected with an output lead; the elastic shifting sheet is positioned above the friction nano generator, one end of the elastic shifting sheet is connected with the supporting frame, and the other end of the elastic shifting sheet is in contact with the surface of the friction nano generator in an initial state;
when the waterwheel wheel rotates under the action of water flow, the elastic shifting piece is flapped by the rotary shifting piece positioned on the waterwheel wheel so as to enable the elastic shifting piece to generate elastic deformation, and the elastic shifting piece moves downwards under the action of elastic potential energy to flap the friction nano generator so as to enable the upper friction layer and the lower friction layer of the friction nano generator to be in contact and separation circulation, thereby generating electric energy and outputting the electric energy.
2. The ultra-low velocity water flow energy harvesting device of claim 1, wherein the height of the fixed bracket is adjustable, and a height adjustment knob is disposed on the fixed bracket.
3. The ultra-low velocity water flow energy harvesting device of claim 1, wherein the number of the rotating paddles is multiple, and the multiple rotating paddles are evenly spaced at the circumferential edge of the waterwheel wheel.
4. The ultra-low-speed water flow energy harvesting device as claimed in claim 1, further comprising a base, wherein the supporting frame and the fixing bracket are fixed on the base.
5. The ultra-low-speed water flow energy collection device according to claim 1, wherein the upper friction layer and the lower friction layer both comprise conductive material layers, at least one of the upper friction layer and the lower friction layer further comprises a micro-nano structure film layer, the micro-nano structure film layer is formed by spraying fibroin solution on the surface of a substrate and drying, and the upper friction layer and the lower friction layer are separated by a spacing layer.
6. The ultra-low-speed water flow energy collection device as claimed in claim 5, wherein the material of the conductive material layer comprises one or more of gold, silver, copper, aluminum and ITO conductive glass.
7. The ultra low velocity water flow energy harvesting device of claim 5, wherein the substrate comprises any one or more of polyethylene terephthalate, polyimide, and polytetrafluoroethylene, and the spacer layer comprises a PDMS layer.
8. The ultra-low-speed water flow energy harvesting device as claimed in claim 5, wherein the friction nano-generator is prepared by a process comprising:
s1: mixing deionized water and silk protein powder according to a preset proportion and uniformly stirring to obtain a uniform and stable silk protein solution;
s2: uniformly spraying the obtained fibroin solution on the surface of a substrate, and fixing a conductive material layer on the other surface of the substrate;
s3: placing the substrate sprayed with the fibroin solution in a drying box for curing treatment, and repeating the steps S2 and S3 for multiple times to obtain a conductive material layer/substrate/fibroin film;
s4: cutting the obtained conductive material layer/substrate/fibroin film into a plurality of conductive material layers/substrates/fibroin thin sheets with the same size;
s5: assembling two conductive material layers/substrates/fibroin sheets, the conductive material layers/the substrate sheets and a spacing layer into a friction nano generator, wherein the spacing layer is positioned in the middle, and two opposite surfaces of the spacing layer are respectively fixed with fibroin in the conductive material layers/the substrates in the conductive material layers/the fibroin sheets.
9. The ultra-low-speed water flow energy collection device according to claim 8, wherein the mass percentage of the deionized water to the silk protein powder is 20: 1-50: 1, wherein the time of each spraying is 5-10 seconds, the curing temperature in a drying oven is 70-100 ℃, and the thickness of the conductive material layer/substrate sheet is 100-150 mu m.
10. An ultra-low speed water flow energy collection method, which is performed based on the ultra-low speed water flow energy collection device based on friction power generation as claimed in any one of claims 1 to 9, wherein when a waterwheel wheel rotates under the action of water flow, a rotary poke piece positioned on the waterwheel wheel beats an elastic poke piece to generate elastic deformation of the elastic poke piece, and the elastic poke piece moves downwards under the action of elastic potential energy to beat a friction nano generator so as to generate contact and separation cycles between an upper friction layer and a lower friction layer, thereby generating and outputting electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011561945.2A CN112615559B (en) | 2020-12-25 | 2020-12-25 | Ultra-low speed water flow energy acquisition device and acquisition method based on friction power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011561945.2A CN112615559B (en) | 2020-12-25 | 2020-12-25 | Ultra-low speed water flow energy acquisition device and acquisition method based on friction power generation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112615559A true CN112615559A (en) | 2021-04-06 |
| CN112615559B CN112615559B (en) | 2022-02-22 |
Family
ID=75245120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011561945.2A Active CN112615559B (en) | 2020-12-25 | 2020-12-25 | Ultra-low speed water flow energy acquisition device and acquisition method based on friction power generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112615559B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113179043A (en) * | 2021-04-26 | 2021-07-27 | 恩拓必(临沂)能源发展有限责任公司 | Water drop energy collecting system |
| CN113433343A (en) * | 2021-06-23 | 2021-09-24 | 上海大学 | Triboelectricity-electromagnetism composite flow velocity detection device for environment perception |
| CN113729712A (en) * | 2021-08-27 | 2021-12-03 | 北京纳米能源与系统研究所 | Sensor |
| WO2023206847A1 (en) * | 2022-04-26 | 2023-11-02 | 浙江大学 | Plant fiber and improved triboelectric negative material based triboelectric nanogenerator, and power generation device |
| CN113729712B (en) * | 2021-08-27 | 2024-06-07 | 北京纳米能源与系统研究所 | Sensor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8294336B2 (en) * | 2005-10-18 | 2012-10-23 | Board Of Regents, The University Of Texas Systems | Piezoelectric windmill apparatus |
| CN202634320U (en) * | 2012-06-14 | 2012-12-26 | 广州市番禺奥迪威电子有限公司 | Cantilever-beam type piezoelectric generator |
| CN104135186A (en) * | 2013-05-03 | 2014-11-05 | 纳米新能源（唐山）有限责任公司 | Cantilever beam structure friction generator and generator set |
| CN204304835U (en) * | 2014-09-17 | 2015-04-29 | 扬州大学 | Wind power piezoelectric generation device |
| CN107309146A (en) * | 2017-06-22 | 2017-11-03 | 中国科学院上海微系统与信息技术研究所 | A kind of preparation method and application of micro-nano structure film |
| CN108336924A (en) * | 2018-02-06 | 2018-07-27 | 中国科学院上海微系统与信息技术研究所 | A kind of bioprotein flexible nano friction generator and preparation method thereof |
| US10139270B2 (en) * | 2010-07-07 | 2018-11-27 | Drexel University | Asymmetric sensor |
-
2020
- 2020-12-25 CN CN202011561945.2A patent/CN112615559B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8294336B2 (en) * | 2005-10-18 | 2012-10-23 | Board Of Regents, The University Of Texas Systems | Piezoelectric windmill apparatus |
| US10139270B2 (en) * | 2010-07-07 | 2018-11-27 | Drexel University | Asymmetric sensor |
| CN202634320U (en) * | 2012-06-14 | 2012-12-26 | 广州市番禺奥迪威电子有限公司 | Cantilever-beam type piezoelectric generator |
| CN104135186A (en) * | 2013-05-03 | 2014-11-05 | 纳米新能源（唐山）有限责任公司 | Cantilever beam structure friction generator and generator set |
| CN204304835U (en) * | 2014-09-17 | 2015-04-29 | 扬州大学 | Wind power piezoelectric generation device |
| CN107309146A (en) * | 2017-06-22 | 2017-11-03 | 中国科学院上海微系统与信息技术研究所 | A kind of preparation method and application of micro-nano structure film |
| CN108336924A (en) * | 2018-02-06 | 2018-07-27 | 中国科学院上海微系统与信息技术研究所 | A kind of bioprotein flexible nano friction generator and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113179043A (en) * | 2021-04-26 | 2021-07-27 | 恩拓必(临沂)能源发展有限责任公司 | Water drop energy collecting system |
| CN113179043B (en) * | 2021-04-26 | 2022-04-29 | 恩拓必(临沂)能源发展有限责任公司 | Water drop energy collecting system |
| CN113433343A (en) * | 2021-06-23 | 2021-09-24 | 上海大学 | Triboelectricity-electromagnetism composite flow velocity detection device for environment perception |
| CN113729712A (en) * | 2021-08-27 | 2021-12-03 | 北京纳米能源与系统研究所 | Sensor |
| CN113729712B (en) * | 2021-08-27 | 2024-06-07 | 北京纳米能源与系统研究所 | Sensor |
| WO2023206847A1 (en) * | 2022-04-26 | 2023-11-02 | 浙江大学 | Plant fiber and improved triboelectric negative material based triboelectric nanogenerator, and power generation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112615559B (en) | 2022-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112615559B (en) | Ultra-low speed water flow energy acquisition device and acquisition method based on friction power generation | |
| CN108111050B (en) | A kind of more contact layer swing type friction nanometer power generators | |
| Liu et al. | Promoting smart cities into the 5G era with multi-field Internet of Things (IoT) applications powered with advanced mechanical energy harvesters | |
| Wen et al. | Harvesting broad frequency band blue energy by a triboelectric–electromagnetic hybrid nanogenerator | |
| Wang et al. | Kelp-inspired biomimetic triboelectric nanogenerator boosts wave energy harvesting | |
| Lin et al. | Robust triboelectric nanogenerator based on rolling electrification and electrostatic induction at an instantaneous energy conversion efficiency of∼ 55% | |
| Tan et al. | Generators to harvest ocean wave energy through electrokinetic principle | |
| CN105490579B (en) | A kind of multilayer linkage type foldable friction generator | |
| CN102777327B (en) | Breeze power generation device based on piezoelectric effects | |
| CN210351042U (en) | Cantilever type wind power generation device | |
| CN108488046A (en) | A kind of windmill electric generating apparatus | |
| CN208106652U (en) | A kind of novel piezoelectric Wind energy collecting device | |
| CN109687761B (en) | Wind-induced multi-vibrator piezoelectric power generation device | |
| Yang | Hybridized and Coupled Nanogenerators: Design, Performance, and Applications | |
| CN202634320U (en) | Cantilever-beam type piezoelectric generator | |
| Wu et al. | UFO‐Shaped Integrated Triboelectric Nanogenerator for Water Wave Energy Harvesting | |
| CN204113542U (en) | A kind of piezoelectric constant wind-driven generator | |
| CN202746107U (en) | Breeze power generation device based on piezoelectric effect | |
| CN108199620A (en) | A kind of wind power piezoelectric generation device based on multilayer cantilever beam | |
| CN204041355U (en) | A kind of wind generating unit | |
| CN109854453A (en) | A kind of naturally wind-driven light piezoelectric energy trapping device and method | |
| Zhang et al. | A flexible droplet-based triboelectric-electromagnetic hybrid generator for raindrop energy harvesting | |
| CN206524785U (en) | A kind of piezoelectric energy collector for gathering high building vibrational energy | |
| CN109120182A (en) | One kind being based on oscillaton water column type piezoelectric cantilever generators | |
| Gao et al. | Self-powered system by a suspension structure-based triboelectric-electromagnetic-piezoelectric hybrid generator for unifying wind energy and vibration harvesting with vibration attenuation function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |