CN108768203B - Three-dimensional annular friction power generation device - Google Patents

Three-dimensional annular friction power generation device Download PDF

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Publication number
CN108768203B
CN108768203B CN201810907277.0A CN201810907277A CN108768203B CN 108768203 B CN108768203 B CN 108768203B CN 201810907277 A CN201810907277 A CN 201810907277A CN 108768203 B CN108768203 B CN 108768203B
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cover plate
friction
rotary
connecting block
layer
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CN108768203A (en
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路益嘉
刘源
程嘉
季林红
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Tsinghua University
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Tsinghua University
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/12—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/10—Composition of foam characterised by the foam pores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/14—Adhesive foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/204—Di-electric

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention relates to a three-dimensional annular friction power generation device, and belongs to the technical field of power generation. Comprises an upper cover plate, N rotary drums, a power input shaft, radial position adjusting rods, a rotary drum connecting block and a lower cover plate. The power input shaft is inserted into the upper cover plate and the lower cover plate, the rotary cylinder connecting block is fixed on the power input shaft, N rotary cylinders are of supporting structures, N rotary cylinders are uniformly distributed around the rotary cylinder connecting block along the circumference, N rotary cylinders are connected with the rotary cylinder connecting block through radial position adjusting rods, the power input shaft transmits power to the rotary cylinder connecting block, and the rotary cylinder connecting block drives N rotary cylinders to do periodic rotary motion along the circumference in an annular column space formed after the upper cover plate 1 and the lower cover plate are connected with each other through the radial position adjusting rods. According to the device, the electric charge quantity generated in the unit space is improved, the friction area is increased by utilizing the upper radial friction plane and the axial circumferential friction plane, and then the electric charge quantity generated by friction is improved. The device has compact structure and good portability.

Description

Three-dimensional annular friction power generation device
Technical Field
The invention relates to a three-dimensional annular friction power generation device, and belongs to the technical field of power generation.
Background
The increase in global energy demand has prompted people to increase research into new energy and energy harvesting; energy harvesting is a current research hotspot, where energy is harvested from nature by various means. The nano friction generator developed by the professor Wang Zhonglin of the university of georgia, U.S. department of technology is one of the most popular types of generators, mainly utilizing triboelectrification and electrostatic effects. Current nano-friction generators have been applied in many areas such as flexible wearable garments, signal detection, blue energy sources, etc. In contrast, current electric energy is generated by an ac motor, and the frequency requirement is high, such as 50Hz ac currently used in China. The friction generator can generate various voltage and current under various frequencies, and especially meets the requirement of electric appliances with low power requirement.
The increasing number of applications of friction generators creates a new problem, such as how to raise the maximum charge produced by the generator as much as possible under certain and limited space conditions of the friction layer.
The generation of the electric charge is itself related to the properties of the friction layer and the friction area, and in the case of friction versus material, only an increase in the contact area of friction is required in order to generate more electric charge.
Chinese patent publication No. CN101527528A, publication No. 2009, 9 months and 9 days, and the patent name of the invention is rotary friction generator, and the rotary friction generator proposed by the patent is in a three-dimensional column shape, and generates electric charges by rotary friction on the circumferential surfaces in the axial direction through different insulating materials on the stator and the rotor. The structure is suitable for a space with a large shaft diameter ratio. The maximum amount of charge that it produces is constrained under the condition that the installation space is axially constrained.
The invention discloses a rotary friction generator for outputting constant current, which is provided by Chinese patent publication No. CN103780136A, the publication date is 5.7 in 2014, the name of the rotary friction generator is a double-layer planar friction structure, charges are generated by relative friction of an upper friction layer and a lower friction layer, and electrodes are arranged on the two friction layers. Chinese patent publication No. CN103825489a, publication No. 2014, publication No. 5, publication No. 28, the invention is named rotary friction generator, voltage stabilizing output circuit and power supply device, the rotary friction generator proposed in the patent has a planar friction layer above, a planar staggered electrode layer below, and charges are generated by rotary friction between the friction layer and the radial plane of the electrode layer. The above planar structure is suitable for a space having a small ratio of axial to radial dimensions. The maximum amount of charge that it produces is constrained under the condition that the space for placement is radially constrained.
The friction area in the above two patents is not effectively utilized in the space between the above large shaft diameter ratio and the smaller shaft diameter ratio.
Disclosure of Invention
The invention aims to provide a three-dimensional annular friction power generation device, which improves the structure of the existing three-dimensional columnar rotary friction power generator, so as to more effectively utilize the arrangement space between a smaller shaft diameter ratio and a large shaft diameter ratio, improve the electric charge quantity generated in unit space, and simultaneously increase the friction area by utilizing an upper radial friction plane and an axial circumferential friction plane, thereby improving the electric charge quantity generated by friction.
The invention provides an annular friction power generation device which comprises an upper cover plate, N rotary drums, a power input shaft, radial position adjusting rods, rotary drum connecting blocks and a lower cover plate, wherein the upper cover plate is provided with a plurality of rotary drums; the power input shaft insert upper cover plate and lower apron, the rotary drum connecting block fix on the power input shaft, N rotary drums be bearing structure, the value of N is 2-36, N rotary drums are around rotary drum connecting block along circumference equipartition, N rotary drums are connected with rotary drum connecting block through radial position regulation pole, the power input shaft is with power transmission to rotary drum connecting block, rotary drum connecting block passes through radial position regulation pole and drives the cyclic annular post space that N rotary drums formed after upper cover plate and lower apron interconnect and make periodic rotary motion along circumference.
In the annular friction power generation device, the rotary cylinder comprises a rotary cylinder body and a second friction layer, and the second friction layer is attached to the outer surface of the rotary cylinder. The cross section of the rotary drum is round, rectangular or square.
In the annular friction power generation device, the upper cover plate and the lower cover plate are connected with each other to form an annular column space, the upper cover plate and the lower cover plate have the same structure, and the lower cover plate comprises a cover plate shell, an elastic layer, an electrode layer and a first friction layer, wherein the first friction layer, the electrode layer, the elastic layer and the cover plate shell are sequentially attached from inside to outside. The electrode layer consists of 2N electrodes, and the 2N electrodes are uniformly distributed along the circumference.
In the annular friction power generation device, the number of the rotating cylinders is one, the second friction layer on one rotating cylinder body is divided into M pieces, the value of M is 1-36, the electrode layer consists of 2M electrodes, and the 2M electrodes are uniformly distributed along the circumference.
In the annular friction power generation device, the material of the first friction layer is any one of paper, polyamide, ethylcellulose, nylon 11 or nylon.
In the above annular friction power generating device, the material of the second friction layer is any one of polytetrafluoroethylene, polyvinyl chloride, polyimide, polyethylene terephthalate or fluorinated ethylene propionic acid.
In the annular friction power generation device, the electrode layer is made of copper, silver or aluminum.
In the annular friction power generation device, the elastic layer is made of 3M double-sided adhesive tape, sponge or foam rubber.
The annular friction power generation device provided by the invention has the advantages that:
compared with the prior art, the annular friction power generation device provided by the invention fully utilizes the three-dimensional space, combines radial two-dimensional plane friction with axial circumferential surface friction, effectively increases friction contact area in a limited space, takes a space with the diameter of 180mm and the axial height of 59mm (the shaft-diameter ratio of 0.328) as an example, and calculates and learns: the area of the radial friction structure is 25434mm 2 The axial friction structure area is 33364mm 2 While the three-dimensional annular structure (inner diameter 70 mm) has an area of 59218 mm 2 . Compared with other structures, the three-dimensional annular structure has the largest increased area, and the transfer amount of charges can be obviously increased. According to the three-dimensional annular friction power generation device, the electric charge quantity generated in a unit space is improved, and meanwhile, the friction area is increased by utilizing the upper radial friction plane and the axial circumferential friction plane, so that the electric charge quantity generated by friction is improved. The annular friction power generation device is compact in structure and good in portability.
Drawings
Fig. 1 is a schematic structural diagram of a three-dimensional annular friction power generation device according to the present invention.
Fig. 2 is a schematic radial cross-sectional view of a rotary drum in the friction generating device shown in fig. 1.
Fig. 3 is a schematic view of the radial cross-section of the lower cover plate in fig. 1.
Fig. 4 is a schematic view of the arrangement of electrodes on the lower cover plate in an embodiment of the device.
Fig. 5 is a schematic diagram of the operation of the device of the present invention.
In fig. 1 to 5, 1 is an upper cover plate, 2 is a rotary drum, 21 is a rotary drum body, 22 is a second friction layer, 3 is a power input shaft, 4 is a radial position adjustment lever, 5 is a rotary drum connection block, 6 is a lower cover plate, 61 is a lower cover plate housing, 62 is an elastic layer, 63 is an electrode layer, 631 is a first electrode, 632 is a second electrode, 633 is a third electrode, 634 is a fourth electrode, 64 is a first friction layer, 65 is a connection hole of the power input shaft and the lower cover plate, and 7 is an electric appliance.
Detailed Description
The annular friction power generation device provided by the invention has the structure shown in fig. 1, and comprises an upper cover plate 1, N rotary cylinders 2, a power input shaft 3, a radial position adjusting rod 4, a rotary cylinder connecting block 5 and a lower cover plate 6. The power input shaft 3 is inserted into the upper cover plate 1 and the lower cover plate 6, the rotary cylinder connecting block 5 is fixed on the power input shaft 3, N rotary cylinders are of supporting structures, and the value of N is 2-36.N rotary drums are uniformly distributed around the rotary drum connecting block 5 along the circumference, N rotary drums 2 are connected with the rotary drum connecting block 5 through radial position adjusting rods 4, power is transmitted to the rotary drum connecting block 5 through a power input shaft 3, and the rotary drum connecting block 5 drives the N rotary drums 2 to do periodic rotary motion along the circumference in an annular column space formed after the upper cover plate 1 and the lower cover plate 6 are connected with each other through the radial position adjusting rods 4.
The above-mentioned annular friction power generation device, wherein the structure of the rotary drum 2 is shown in fig. 2, comprises a rotary drum body 21 and a second friction layer 22, and the second friction layer 22 is attached to the outer surface of the rotary drum 21. The cross-sectional shape of the rotary drum member 2 is circular, rectangular or square.
In the above-mentioned annular friction power generation device, after the upper cover plate 1 and the lower cover plate 6 are connected to each other, an annular column space is formed, the upper cover plate 1 and the lower cover plate 6 have the same structure, and the lower cover plate 6 is illustrated in fig. 3, and the structure of the annular friction power generation device includes a cover plate housing 61, an elastic layer 62, an electrode layer 63 and a first friction layer 64, where the first friction layer 64, the electrode layer 63, the elastic layer 62 and the cover plate housing 61 are sequentially attached from inside to outside, as illustrated in fig. 3. The electrode layer 63 is composed of 2N electrodes, and the 2N electrodes are uniformly distributed along the circumference. In one embodiment of the present invention, the electrode layer is composed of four electrodes, as shown in fig. 4, and includes a first electrode 631, a second electrode 632, a third electrode 633 and a fourth electrode 634.
In the above-mentioned annular friction power generation device, the number of the rotary cylinders may be one, the second friction layer 22 on one rotary cylinder body 21 is divided into M sheets, the value of M is 1-36, the electrode layer 63 is composed of 2M electrodes, and 2M electrodes are uniformly distributed along the circumference. For example, 2 second friction layers can be attached to the outer side of a complete annular rotary cylinder, the 2 second friction layers are uniformly distributed along the circumference, and the corresponding electrode layer 63 is composed of 4 electrodes uniformly distributed along the circumference.
The details of the specific construction and operation of the present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 shows an annular friction generating device designed by the invention, which is provided with 2 rotating drums 2, and mainly comprises an upper cover plate component 1, the rotating drums 2, a power input shaft 3, a radial position adjusting rod 4, a rotating drum connecting block 5 and a lower cover plate component 6. For the convenience of installation, the shell apron is split into two (the higher authority is 1, and the lower authority is 6), and motor or hand accessible input shaft 3 are with power transmission to rotatory section of thick bamboo connecting block 5, and rotatory section of thick bamboo connecting block 5 drives rotatory section of thick bamboo 2 and do periodic rotary motion in the cyclic annular post space through radial position regulation pole 4.
The radial cross section of the rotary drum 2 is schematically shown in fig. 2, the cross section of the rotary drum is selected to be circular, and the second friction layer 22 is attached to the outer surface of the rotary drum 21, so that the second friction layer is partially omitted on the left side due to the space for providing the radial adjustment lever. The upper and lower cover plates are symmetrical in structure, and the lower cover plate member 6 is exemplified as shown in fig. 3 in a schematic radial sectional view, wherein the outer surface of the elastic layer 62 is attached to the inner surface of the lower cover plate 61, the outer surface of the electrode layer 63 is attached to the inner surface of the elastic layer 62, and the outer surface of the first friction layer 64 is attached to the inner surface of the electrode layer 63. The elastic layer 62 is used to create the necessary frictional positive pressure and its thickness can be used to adjust the fit of the friction surface. The electrode layer 63 serves to conduct out the generated charges. When the rotary drum 21 is rotated by external driving, the first friction layer 63 is attached to the first friction layer 22, and relative sliding friction occurs, so that charge migration occurs by utilizing the difference in the ability of the two friction layers to lose electrons. The elastic layer 62 is used to create a frictional positive pressure, the thickness of which can be used to adjust the fit of the friction surface. The electrode 63 is used to conduct out the generated charge. When the rotary drum 21 is rotated by external driving, the inner surface of the a friction layer 63 and the outer surface of the B friction layer 22 are bonded to generate relative sliding friction, and charge migration is generated by utilizing the difference in the ability of the two friction layers to gain and lose electrons.
The first friction layer 64 and the second friction layer 22 have different electron-withdrawing capacities, and the material of the first friction layer 64 may be selected from materials with strong electron-withdrawing capacities, including but not limited to, paper, polyamide, ethylcellulose, nylon 11, nylon 66, etc.; the second friction layer 22 may be selected from materials having high electron-withdrawing capability including, but not limited to, materials such as polytetrafluoroethylene, polyvinyl chloride, polyimide, polyethylene terephthalate, fluorinated ethylene propionic acid, and the like; the material of the electrode layer 63 may be a conductive material, including but not limited to copper, silver, aluminum, etc. The material of the elastic layer 62 may be selected from 3M double-sided tape, sponge, foam, etc.
The arrangement of the electrode layer modules 63 in the lower cover plate 6 is shown in fig. 4, and two rotating cylinder components are selected in the embodiment, the rotating cylinders are supporting structures and are symmetrically distributed around the rotation center, and in the following example, the lower electrode 63 adopts 4 electrodes with the same shape and size, and the electrodes are equidistantly arranged along the rotation circumference, namely 631, 632, 633 and 634. The upper cover plate electrode has a symmetrical 4-piece structure and is respectively connected with the corresponding block electrodes, and the description is omitted. The inner surfaces of the 4 electrodes of the electrode 63 are adhered with a first friction layer 64. The second friction layer 22 is 2 sheets, and the single sheet shape is identical to that of the electrode 63. The second friction layer 22 is fixed on the rotary drum 21, which is connected to the rotary drum connecting block 5 via the radial position adjusting lever 4. The radial position adjusting lever 4 adjusts the relative position of the rotary drum in the radial direction by a nut that fixes the rotary drum.
According to the arrangement of the rotary cylinder, the electrodes which can contact with the rotary cylinder are connected in series through the lead to lead out one output end, the other output end is led out in series between the other electrodes, and the two output ends are the output ends of the generator, so that charges can be led out for power consumption elements.
The working principle of this embodiment, as shown in fig. 4, is described as follows:
when the rotary drum 2 rotates, the second friction layer 22 attached to the rotary drum 2 rubs against the friction layer 64, electrons are negatively charged by the second friction layer 22, the first friction layer 64 loses the positive charge of the electrons, and the corresponding negative charge is induced on the electrode 63 near the first friction layer 64. A typical discharge process was analyzed: referring to fig. 4, when the rotary drum is rotated counterclockwise from a position overlapping the first electrode 631 and the third electrode 633 to a position overlapping the second electrode 632 and the fourth electrode 634, and the rotary drum is moved to the position shown in fig. 5, it is assumed that the left electrode is the first electrode 631 and the right electrode is the second electrode 632. The negatively charged material 22 is moving from the left electrode to the right electrode. The left electrode first electrode 631 is positively charged, but as the second rubbing layer 22 leaves, the positive charge on the first electrode 631 gradually decreases; as the second friction layer 22 approaches to the right, the negative charge on the right first electrode 632 decreases and the positive charge gradually increases. The generated current moves from the first electrode 631 to the second electrode 632, and power is output by the consumer 7.

Claims (8)

1. An annular friction power generation device is characterized by comprising an upper cover plate, N rotary drums, a power input shaft, a radial position adjusting rod, a rotary drum connecting block and a lower cover plate; the power input shaft is inserted into the upper cover plate and the lower cover plate, the rotary cylinder connecting block is fixed on the power input shaft, the N rotary cylinders are of supporting structures, the value of N is 2-36, the N rotary cylinders are uniformly distributed around the rotary cylinder connecting block along the circumference, the N rotary cylinders are connected with the rotary cylinder connecting block through radial position adjusting rods, the power input shaft transmits power to the rotary cylinder connecting block, and the rotary cylinder connecting block drives the N rotary cylinders to periodically rotate along the circumference in an annular column space formed after the upper cover plate and the lower cover plate are connected with each other through the radial position adjusting rods; the rotary cylinder comprises a rotary cylinder body and a second friction layer, and the second friction layer is attached to the outer surface of the rotary cylinder;
the upper cover plate and the lower cover plate are mutually connected to form an annular column space, the upper cover plate and the lower cover plate have the same structure, the annular column space comprises a cover plate shell, an elastic layer, an electrode layer and a first friction layer, and the first friction layer, the electrode layer, the elastic layer and the cover plate shell are sequentially attached from inside to outside.
2. The annular friction generating device according to claim 1, wherein the cross-sectional shape of the rotary drum is circular or rectangular.
3. The annular friction generating device according to claim 1, wherein the electrode layer is composed of 2N electrodes, and the 2N electrodes are uniformly distributed along the circumference.
4. The annular friction power generation device according to claim 1, wherein the number of the rotary drums is one, the second friction layer on one rotary drum body is divided into M pieces, the value of M is 1-36, the electrode layer consists of 2M electrodes, and the 2M electrodes are uniformly distributed along the circumference.
5. The annular friction generating device according to claim 1, wherein the material of the first friction layer is any one of paper, polyamide, ethylcellulose, or nylon.
6. The annular friction generating device according to claim 1, wherein the material of the second friction layer is any one of polytetrafluoroethylene, polyvinyl chloride, polyimide, polyethylene terephthalate, and fluorinated ethylene propionic acid.
7. The annular friction generating device according to claim 1, wherein the electrode layer material is copper, silver or aluminum.
8. The circular friction generating device according to claim 1, wherein the material of the elastic layer is 3M double-sided tape, sponge or foam.
CN201810907277.0A 2018-08-08 2018-08-08 Three-dimensional annular friction power generation device Active CN108768203B (en)

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CN114123842B (en) * 2021-10-29 2023-09-15 长三角(嘉兴)纳米应用技术研究院 Arc self-rebound friction nano generator
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