CN111146972A - Pavement energy harvesting device based on paper folding and rebounding mechanism - Google Patents
Pavement energy harvesting device based on paper folding and rebounding mechanism Download PDFInfo
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- CN111146972A CN111146972A CN201911405516.3A CN201911405516A CN111146972A CN 111146972 A CN111146972 A CN 111146972A CN 201911405516 A CN201911405516 A CN 201911405516A CN 111146972 A CN111146972 A CN 111146972A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 69
- 238000003306 harvesting Methods 0.000 title claims abstract description 27
- 239000003989 dielectric material Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
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Abstract
The invention discloses a pavement energy harvesting device based on a paper folding rebounding mechanism. The dielectric pair comprises two dielectric material layers with opposite polarities and two metal electrode layers, when a vehicle is pressed above the dielectric pair, the piston rod generates downward displacement, the displacement is recovered after the vehicle leaves, in the process, the paper folding rebound mechanism moves through compression and rebound, so that the dielectric pair is contacted and separated to generate charge transfer, mechanical energy is converted into electric energy, and the electric energy is transmitted through the electric energy transmission circuit. The paper folding rebounding mechanism provided by the invention has the advantages of larger effective surface area, high space utilization rate and high energy conversion efficiency.
Description
Technical Field
The invention relates to the field of energy harvesting, in particular to a pavement energy harvesting device based on a paper folding and rebounding mechanism.
Background
The energy harvesting device solves the problem that some micro sensors need to be powered by batteries, so that the portability, the cruising ability and the working stability of the device are greatly improved; but the traditional energy harvesting device has the defect of small specific surface area of the structure. In daily life, the energy generated in road traffic is very huge, but people cannot effectively utilize the energy generated in the process all the time, and considerable energy loss is caused. In particular, when the automobile runs on a road, a large amount of vibration energy is contained in the road surface vibration process caused by the automobile. The proper energy harvesting device is adopted to realize the conversion from vibration energy to electric energy in the road vibration process, so that a large amount of energy can be saved for a matched traffic system.
The emerging Origami form is a novel space structure form developed in recent decades, and in recent years, foldable structures based on rigid Origami structures are more and more widely applied to engineering and architectural design. The space extensibility of the paper folding structure enables the structure to be freely compressed and extended, the specific surface of the structure is greatly increased by mirror image processing applied during design, and a larger effective area of electrostatic effect can be achieved in the space with the same size.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a pavement energy harvesting device based on a paper folding rebounding mechanism, wherein the paper folding structure of the device has certain elasticity, can rebound naturally after being compressed, has larger effective area and higher energy conversion efficiency, and can effectively collect the mechanical energy of pavement vibration. The specific technical scheme is as follows:
a road surface energy harvesting device based on a paper folding rebounding mechanism comprises a working cylinder, a piston rod, the paper folding rebounding mechanism, a dielectric pair and an electric energy transmission circuit, wherein the dielectric pair and the electric energy transmission circuit are fixed on the surface of the paper folding rebounding mechanism; the upper flat plate is used for bearing the pressure of the road surface;
the dielectric pair comprises two dielectric material layers with opposite polarities and two metal electrode layers, wherein one dielectric material layer and one electrode layer are fixed on one surface of the paper folding rebounding mechanism, the other dielectric material layer and the other electrode layer are fixed on the surface, which is attached to the paper folding rebounding mechanism when the paper folding rebounding mechanism is compressed, and the electrode layers are located between the dielectric material layers and the surface of the paper folding rebounding mechanism;
the pavement energy harvesting device is placed under a pavement, when a vehicle is pressed above the pavement energy harvesting device, downward displacement is generated, after the vehicle leaves, the displacement is recovered, in the process, the paper folding rebounding mechanism moves through compression and rebounding, so that the dielectric pairs are contacted and separated, charge transfer is generated, mechanical energy is converted into electric energy, and the electric energy is transmitted through the electric energy transmission circuit.
Furthermore, the paper folding resilience mechanism is used for folding paper by a thick plate, so that the phases of the contact and separation processes of all folding surfaces of the paper folding structure are consistent.
Further, paper folding resilience mechanism still include the clearance structure, the clearance structure through with paper folding resilience mechanism's summit is inwards turned over and is realized to increase the figure of paper folding crease, increase paper folding resilience mechanism's rigidity and resilience performance the time do the dielectric pair provide and place the space.
Furthermore, the vertexes of the paper folding rebound mechanism are convex vertexes, four creases extending from a certain vertex are included, three of the four creases are ridges, the other crease is a valley, the angle of the area with the smaller corresponding angle is an acute angle α, and the angle of the area with the larger corresponding angle is 180- α, in the four areas divided by the four creases, on the plane crease graph of the paper folding rebound mechanism, the creases divide the plane areas into trapezoids which are alternately arranged.
Further, the electric energy transmission circuit comprises an electric wire, a voltage stabilizing rectifier, an electric storage device and a transformation device, wherein the electric storage device is connected with the metal conducting layer through the electric wire.
The invention has the beneficial effects that:
(1) the road surface energy harvesting device converts the vibration mechanical energy caused by the dynamic load of the road surface into the electric energy, supplies power to all electric equipment on the traffic road through the voltage stabilization and transformation treatment of the electric energy transmission circuit, can store the electric energy in time when the surplus of the electric energy is generated, ensures the continuous power supply of the system, and provides a brand-new environment-friendly green energy source for urban rail transit.
(2) The rigidity of the integral paper folding rebounding mechanism is designed through the gap structure at the top point of the paper folding rebounding mechanism, so that the working condition that the requirements of various rigidities are met is met, and the paper folding rebounding mechanism has better rebounding performance. In the energy harvesting device, the gap structure can provide a space for placing the dielectric pair, so that the contact area of the dielectric pair is increased, and the energy harvesting efficiency of the device is further improved;
(3) the paper folding resilience mechanism is thick-plate paper folding, and the phases of the contact separation processes of all folding surfaces of the paper folding structure are consistent by selecting the thick-plate paper folding, so that the currents of all dielectric pairs are not mutually offset, and the power of electric energy output is improved;
(4) the pavement energy harvesting device based on the paper folding resilience mechanism has the advantages of exquisite structure, novel form, energy conservation and environmental protection, and under a certain volume, the paper folding resilience mechanism provides a larger effective surface area, and has high space utilization rate and high energy conversion efficiency.
Drawings
FIG. 1 is a schematic view of the present invention being buried under a road surface.
FIG. 2 is a schematic representation of the operation of the present invention as a tire is driven over.
FIG. 3 is a plan fold view of the paper folding resilient mechanism, wherein the solid lines represent ridges and the dashed lines represent valleys, the same applies hereinafter.
Figure 4 is a detail fold view of the gap structure.
FIG. 5 is a schematic diagram of the sticking condition of the electrode layer and the dielectric material layer on the surface of the paper folding resilience mechanism.
Fig. 6a and 6b are side and top views, respectively, of the paper folding rebounding mechanism.
FIG. 7 is output currents under external loads of different frequencies, which are obtained through a road surface energy harvesting device based on a columnar periodic structure.
Reference numbers in the figures: 1-road surface; 2-a piston rod; 3-a working cylinder; 4-paper folding resilience mechanism; 5-tyre.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments, and the objects and effects of the invention will become more apparent. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 shows a schematic diagram of burying an example of the pavement energy harvesting device based on a paper folding rebounding mechanism under a pavement 1, the device includes a piston rod 2, a working cylinder 3, a paper folding rebounding mechanism 4, a dielectric pair and an electric energy transmission circuit fixed on the surface of the paper folding rebounding mechanism 4, the piston rod 2 is a piston rod with an i-shaped cross section, and includes an upper flat plate, a lower flat plate and a connecting rod connecting the two flat plates, the lower flat plate of the piston rod is located inside the working cylinder 3, and two ends of the paper folding rebounding mechanism 4 are respectively connected with the lower flat plate and the bottom of the working cylinder; the upper flat plate is used for bearing the pressure of the road surface;
the dielectric pair comprises two dielectric material layers with opposite polarities and two metal electrode layers, wherein one dielectric material layer and one electrode layer are fixed on one surface of the paper folding rebounding mechanism, the other dielectric material layer and the other electrode layer are fixed on the surface, which is attached to the paper folding rebounding mechanism when the paper folding rebounding mechanism is compressed, and the electrode layers are located between the dielectric material layers and the surface of the paper folding rebounding mechanism;
when a vehicle runs, the deformation amount of the road surface is relatively small, so when the road surface energy harvesting device is placed under the road surface, the paper folding rebound mechanism 4 has a certain compression amount under the initial state, but the dielectric material layers on the adjacent surfaces are not contacted, when the vehicle runs and the tire 5 presses the upper part of the embedded road section of the invention, the road surface generates a small downward deformation (as shown in figure 2), the deformation is transmitted to the paper folding rebound mechanism 4 through the piston rod 2, the paper folding rebound mechanism 4 is further compressed, the dielectric material layers on the adjacent surfaces are contacted, after the tire 5 leaves, the state of figure 1 is restored, the dielectric material layers with opposite polarities generate charge transfer in the contact-separation process, the surface of the dielectric material layers are uniformly distributed with different charges, corresponding potential difference and current are generated, as shown in figure 7, the current passes through the metal conducting layers and the conducting wires and the voltage stabilizing rectifier and then is stored in the storage battery in the form of electric energy, after transformation, the power can be supplied to external electric equipment.
Fig. 3 is a plan view of a paper folding resilient mechanism, except for the edges, where the solid lines represent the folding ridges, i.e. the folding ridges are upwardly convex and are ridge-shaped after folding, and the dotted lines represent the folding valleys, i.e. the folding ridges are downwardly concave and are valley-shaped after folding, it is to be noted that the folding ridges are opposite to the folding valleys, and that the folding ridges, which are ridge-shaped when viewed from one side, are valley-shaped on the other side, where the folding ridges and the valley-shaped are both defined facing the outer surface of the columnar structure, the vertices of the paper folding resilient mechanism are convex vertices, out of four folding lines extending from a vertex, three of which are ridge-shaped and the other is valley-shaped, and in four regions divided by the four folding lines, the region corresponding to the smaller angle is an acute angle α, the region corresponding to the larger angle is 180 ° - α, and on the plan view of the paper folding resilient mechanism, the folding lines divide the plane regions into trapezoids arranged alternately, which are provided with gap structures, which are added to the local regions near the vertices, and which, the dielectric structures, and which provide the stiffness to the electrode layer after folding structures, which is adjusted by the gap structures.
Folding the planar material according to the crease pattern shown in fig. 3 results in the paper folding resilient mechanism shown in fig. 6. As shown in fig. 5, the surfaces of the paper folding resilient mechanism are respectively attached with a metal electrode layer and a dielectric material layer from inside to outside, and the polarities of the dielectric materials attached to the two surfaces which will be contacted when the paper folding resilient mechanism is fully compressed are opposite, such as the dielectric material one and the dielectric material two in fig. 5.
In order to improve the conversion efficiency of the energy harvesting device for converting mechanical energy into electric energy, the paper folding rebounding mechanism is preferably a thick plate paper folding mechanism, the phases of the contact and separation processes of the folding surfaces of the paper folding rebounding mechanism are consistent, the currents of the dielectric pairs are not mutually offset, and therefore the output power of the energy harvesting device is improved.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and although the invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that various changes in the form and details of the embodiments may be made and equivalents may be substituted for elements thereof. All modifications, equivalents and the like which come within the spirit and principle of the invention are intended to be included within the scope of the invention.
Claims (5)
1. A pavement energy harvesting device based on a paper folding rebounding mechanism is characterized by comprising a working cylinder, a piston rod, the paper folding rebounding mechanism, a dielectric pair and an electric energy transmission circuit, wherein the dielectric pair and the electric energy transmission circuit are fixed on the surface of the paper folding rebounding mechanism; the upper flat plate is used for bearing the pressure of the road surface;
the dielectric pair comprises two dielectric material layers with opposite polarities and two metal electrode layers, wherein one dielectric material layer and one electrode layer are fixed on one surface of the paper folding rebounding mechanism, the other dielectric material layer and the other electrode layer are fixed on the surface, which is attached to the paper folding rebounding mechanism when the paper folding rebounding mechanism is compressed, and the electrode layers are located between the dielectric material layers and the surface of the paper folding rebounding mechanism;
the pavement energy harvesting device is placed under a pavement, when a vehicle is pressed above the pavement energy harvesting device, downward displacement is generated, after the vehicle leaves, the displacement is recovered, in the process, the paper folding rebounding mechanism moves through compression and rebounding, so that the dielectric pairs are contacted and separated, charge transfer is generated, mechanical energy is converted into electric energy, and the electric energy is transmitted through the electric energy transmission circuit.
2. The pavement energy harvesting device based on the paper folding resilience mechanism is characterized in that the paper folding resilience mechanism is used for folding paper on a thick plate, and the phases of contact and separation processes of folding surfaces of the paper folding structure are consistent.
3. The folding rebounding mechanism-based pavement energy capturing device according to claim 1, wherein the folding rebounding mechanism further comprises a gap structure, and the gap structure is implemented by folding the top of the folding rebounding mechanism inwards, so that the number of folding creases is increased, the rigidity and the resilience of the folding rebounding mechanism are increased, and meanwhile, a placing space is provided for the dielectric pair.
4. The pavement energy harvesting device based on the paper folding resilience mechanism is characterized in that the peaks of the paper folding resilience mechanism are convex peaks, four folds extending from one peak are provided, three of the four folds are ridges, the other fold is a valley, the four areas divided by the four folds have smaller corresponding angle of acute angle α and larger corresponding angle of 180- α, and on the plane fold graph of the paper folding resilience mechanism, the folds divide the plane areas into trapezoids which are alternately arranged.
5. The folding paper rebounding mechanism-based road surface energy harvesting device according to claim 1, wherein the electric energy transmission circuit comprises an electric wire, a voltage stabilizing rectifier, an electrical storage device and a voltage transformation device, and the electrical storage device and the metal conductive layer are connected through the electric wire.
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| CN201911405516.3A CN111146972B (en) | 2019-12-30 | 2019-12-30 | Pavement energy harvesting device based on paper folding and rebounding mechanism |
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| CN201911405516.3A CN111146972B (en) | 2019-12-30 | 2019-12-30 | Pavement energy harvesting device based on paper folding and rebounding mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865589A (en) * | 2021-01-30 | 2021-05-28 | 同济大学 | Road energy harvesting device based on lever principle and friction nanometer power generation |
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2019
- 2019-12-30 CN CN201911405516.3A patent/CN111146972B/en active Active
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