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Electric signal output device containing periodic bending structure

An output device and electrical signal technology, applied in the direction of friction generators, etc., can solve the problems of low frequency, high cost, and scattered energy distribution of tidal energy and wave energy, and achieve the effect of strong flexibility and low weight

Active Publication Date: 2015-10-14
BEIJING INST OF NANOENERGY & NANOSYST
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

But so far, this energy has been almost completely untapped
The reason is that the frequency of tidal energy and wave energy is very low, and the commonly used electromagnetic generators cannot effectively collect such low-frequency mechanical energy
At the same time, since seawater has no limitation of river channels, the energy distribution is relatively scattered, requiring a large-scale laying of generators, and the cost is quite high
Moreover, the corrosion of seawater poses a serious threat to the sophisticated electromagnetic power generation system

Method used

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  • Electric signal output device containing periodic bending structure
  • Electric signal output device containing periodic bending structure
  • Electric signal output device containing periodic bending structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1 Preparation of electrical signal output device

[0064] Raw materials include 125 μm thick polyimide (abbreviated as Kapton) film, 125 μm thick polytetrafluoroethylene (abbreviated as PTFE) film, 30mm thick organic glass (Acrylic) and copper sputtering source. First, the Kapton film is periodically bent. The method used is as Figure 6 As shown in (a), the diameter and spacing of the metal rods are used to adjust the parameters of Kapton bending, and two pairs of metal plates are used to fix the two ends of the metal rods respectively. The whole is then baked in a muffle furnace at 360 degrees Celsius for four hours. Kapton film is a thermoplastic material with a glass transition temperature between 360°C and 400°C, according to a data sheet provided by DuPont. Therefore, the Kapton film will stably maintain its wavy shape at room temperature after baking. Thereafter, 200 nm of metallic copper was sputtered on both sides of the Kapton film as electrodes...

Embodiment 2

[0066] Example 2 Test of the driving ability of the electrical signal output device to the load

[0067] Using the electrical signal output device prepared in Example 1, at an oscillation frequency of 100 Hz, a rheostat was used to provide load resistances with different resistance values ​​from 1KΩ to 100MΩ, and the output performance of the electrical signal output device under these resistances was tested. When testing voltage, the electrometer is connected in parallel with the load resistor; when testing current, the electrometer is connected in series with the load resistor. Figure 8 (a) shows the results of our tests. It can be seen that the average peak output voltage increases with the increase of the load resistance value, and the average peak output current increases with the decrease of the load resistance value. The relationship between the instantaneous output peak power and the change of the resistance value is as follows: Figure 8 (b) shows that it reaches t...

Embodiment 3

[0069] Embodiment 3 The collection of ocean wave energy by the electrical signal output device

[0070] The electric signal output device prepared in Example 1 is used, and the fluctuation of water in the bath is used to simulate the situation of sea waves. The electrical signal output device is first packaged in a thin rubber bag to achieve the purpose of waterproofing, and then fixed on the side wall of the bathtub. By agitating the water in the bath, the waves produced periodically impact the surface of the generator, and the mechanical energy of the impact is converted into electrical energy. The output voltage signal measured by the Figure 9 (a), its average peak voltage is around 24V. The movement of the water does not stop immediately after the agitation is stopped. From Figure 9 (b) From the displayed voltage signal, it can be seen that the output amplitude decreases with time, and the generator can still give a voltage output of about 1.2V even after the agitati...

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Abstract

According to the present invention, a friction power generation device possessing a periodic bending structure realizes the effective collection of the broadband mechanical energy. The electric signal output device concretely comprises a first part of a flat plate structure and a second part which possesses the periodic bending structure and can generate the elastic deformation, wherein the first part comprises a first electrode layer and a first friction layer attached to the lower surface of the first electrode layer, and the second part comprises a second electrode layer. A part of lower surface of the first friction layer and a part of the upper surface of the second part are in a periodic and mutual contact state without the action of external forces, and can generate the surface friction of which the contact area changes under the action of the external forces, at the same time, an electric signal is outputted to an external circuit by the first electrode layer and the second electrode layer. The important application of the electric signal output device of the present invention is to collect the great wave energy in the rivers, lakes and seas and analyze the hydrology.

Description

technical field [0001] The invention relates to an electrical signal output device based on friction power generation, especially an electrical signal output device containing a periodic bending structure, and the application of the device in liquid mechanical energy collection and hydrological analysis. Background technique [0002] Although the phenomenon of triboelectrification has been known for a long time, the successful use of this effect to generate electricity began in 2012 when the triboelectric nanogenerator was successfully developed. This generator has many advantages such as small size, light weight, low cost, easy preparation, high energy conversion efficiency, high output power density, etc., and has broad application prospects. [0003] There is a huge amount of energy in seawater, which is mainly reflected in tidal energy and wave energy. But so far, this energy has been almost completely untapped. The reason is that the frequency of tidal energy and ocea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N1/04
Inventor 温肖楠杨维清王中林
Owner BEIJING INST OF NANOENERGY & NANOSYST
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