Egg support type friction nanometer power generation pavement plate and construction method thereof

Abstract

The invention provides an egg support type friction nanometer power generation pavement plate and a construction method thereof, the power generation principle of the plate is friction power generation and electrostatic induction coupling effect, current is generated through electron transfer generated by interaction between polar materials, and the purpose of pavement power generation is achieved; the plate at least comprises the following structural layers from top to bottom: a compression-resistant protective layer, a friction nano power generation layer and a high-strength bearing layer; the friction nano power generation layer is provided with a multi-layer egg support type insulating plate, a metal electrode layer, two friction layers which are attached to the metal electrode layer and have opposite polarities, an elastic support body and a rectifying circuit layer connected with the metal electrode layer; the construction method comprises the following steps: prefabricating and assembling egg support type friction nanometer power generation pavement plates, arranging the egg support type friction nanometer power generation pavement plates between a newly-built pavement surface layer and a structural layer or between structural layers of an existing pavement, and generating electric energy in a contact-separation friction process of the friction nanometer power generation layers under the action of vertical force and horizontal force generated by wheel load; and the application potential is wide.

Description

Technical Field

[0001] The invention belongs to the field of road engineering and energy collection technology, and specifically relates to an egg-tray type friction nano-power generation pavement slab and a construction method thereof. Background Art

[0002] At the end of 2023, my country's highway mileage reached 5.4368 million kilometers, an increase of 82,000 kilometers compared with the end of 2022, and the scale of development of the transportation industry is constantly expanding. Of the energy consumed by road driving, about 85% of the energy is dissipated into the surrounding environment in the form of kinetic energy and heat energy. Among them, the road vibration caused by the driving of vehicles is a low-frequency, irregular, and low-quality energy. If the vibration energy generated by the vehicle can be collected and utilized, it will solve the huge energy demand in society.

[0003] Friction nano-power generation technology has higher energy conversion efficiency in collecting low-frequency, irregular mechanical energy. A large number of studies have found that the open circuit voltage and instantaneous energy conversion efficiency of friction nano-power generation technology are much higher than those of other devices such as piezoelectric and magnetoelectric devices. However, the research on friction nano-power generation technology in China is mainly used in the fields of Internet of Things, electronic skin, and marine development, and few people have applied it to road engineering. Summary of the invention

[0004] In order to apply friction nano power generation technology to the field of road engineering, the present invention aims to provide a pavement plate using friction nano power generation technology in road engineering, which collects the mechanical vibration energy of the road surface generated by vehicle driving for power generation, thereby achieving the green, environmentally friendly, low-carbon and efficient development goals of road energy utilization.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a pavement plate of an egg-tray type friction nano-power generation model, which is characterized in that the mechanical energy generated by the vibration of the pavement is used to make the polar friction surface in the plate produce a contact-separation process, and then the purpose of collecting electrical energy is achieved through its charge transfer. The technical solution adopted is:

[0006] The egg-tray type friction nano-power generation pavement plate is a regular plate structure, and its plane is a rectangular, hexagonal or other shape.

[0007] Preferably, the plate is used in non-motorized vehicle lanes such as sidewalks and bicycle lanes, and its thickness is controlled at 40mm to 350mm and its plane width is controlled at 100mm to 1000mm according to the load size. The plate is composed of a compression protection layer with a thickness of 5mm to 50mm, a friction nano-power generation layer with a thickness of 30mm to 150mm, and a high-strength bearing layer with a thickness of 5mm to 150mm.

[0008] Preferably, the plate is applied to motor vehicle lanes such as highways of various grades and urban roads, and its thickness is controlled within 40mm-500mm and its plane width is controlled within 200mm-1500mm according to the traffic volume, road grade and traffic load grade. The plate is composed of a compression protection layer with a thickness of 5mm-100mm, a friction nano power generation layer with a thickness of 30mm-200mm and a high-strength bearing layer with a thickness of 5mm-200mm.

[0009] Preferably, the slabs are directly laid on the surface layer of the asphalt pavement or between the structural layers by brushing with bonding materials such as emulsified asphalt, hot asphalt, epoxy resin, etc. If laid on the surface layer, the anti-slip function of the compressive protection layer must be considered, and waterproof materials are used on all sides for sealing, so as to meet the dual functional requirements of safe driving and power generation.

[0010] The compression protection layer is made of organic polymer materials such as plate-shaped polymethyl methacrylate, polycarbonate, or plate-shaped glass fiber composite materials, cement concrete, metal, etc. according to requirements such as highway grade, traffic load grade, and structural layer.

[0011] The high-strength bearing layer is manufactured and formed by cement concrete, epoxy mortar, glass fiber, metal and other materials according to the requirements of highway grade, traffic load grade, structural layer and the like.

[0012] Preferably, the compressive protective layer and the friction nano power generation layer, and the friction nano power generation layer and the high-strength bearing layer can be tightly bonded using any one of the adhesive materials selected from structural sealant, silicone waterproof sealant, two-component silicone glue (glass glue), two-component polysulfide glue, and two-component polyurethane, and rivets or bolts can also be used for riveting or bolting.

[0013] The plate is sealed with waterproof materials such as rubber. The waterproof material surrounds the friction nano power generation layer and is closely connected to the compressive protection layer and the high-strength bearing layer to prevent water vapor from the outside air from entering and protect the friction nano power generation layer from the external environment.

[0014] The friction nano power generation layer is composed of an egg-tray type upper support plate, an egg-tray type middle support plate, an egg-tray type lower support plate, an elastic support body and a rectifying circuit layer connected to each metal electrode layer.

[0015] Preferably, the friction nano power generation layer may include multiple stacked support plates, and each middle support plate unit is sequentially stacked with a second polarity friction surface with opposite polarity to the upper support plate, a metal electrode layer, an egg-tray insulating plate, a metal electrode layer, and a first polarity friction surface with opposite polarity to the lower support plate.

[0016] Among them, the upper egg-tray insulating board is a structure between the metal electrode layer and the pressure-resistant protective layer, the lower egg-tray insulating board is a structure between the metal electrode layer and the high-strength bearing layer, and the middle egg-tray insulating board is a structure between the upper and lower egg-tray insulating boards. The material can be any one or a combination of insulating materials such as bisphenol A epoxy resin, modified bisphenol A epoxy resin, alicyclic epoxy resin, etc.

[0017] Preferably, the bottom surface of the egg-tray insulating plate in the egg-tray upper tray is sequentially adhered with a metal electrode layer and a first polarity friction surface; the top surface of the egg-tray insulating plate in the egg-tray lower tray is sequentially adhered with a metal electrode layer and a second polarity friction surface.

[0018] Preferably, the protrusions and grooves in the egg-tray type insulating board can adopt geometric three-dimensional structures such as hemispherical surfaces, semi-ellipsoidal surfaces, conical surfaces, pyramidal surfaces or rotating surfaces formed by rotating sine (cosine) functions around vertical axes, that is, the grooves and protrusions are distributed alternately, and each layer of the support plate can be embedded. The egg-tray body and the plane edge adopt chamfering to reduce stress concentration. At the same time, it is necessary to ensure that 2 / 5 of the protruding parts of each layer of the egg-tray type support plate are in the corresponding grooves of the other layer, and each layer of the support plate is connected into a whole by an elastic support body. This egg-tray body can ensure that the multi-layer support plate structure is embedded and contacted with each other under the action of driving load, prevent the spatial dislocation of the road panel structure due to dynamic load, and can also make full use of the contact generated by horizontal displacement to generate electricity.

[0019] Preferably, the spacing between the egg tray layers is controlled to be 0.5 mm to 10 mm.

[0020] Preferably, the center distance between adjacent egg trays is controlled within 10 mm to 100 mm, the boundary distance is controlled within 0 mm to 25 mm, the height of the protrusion and the depth of the groove are controlled within 3 mm to 30 mm, and the surface area of ​​the protrusion or groove is controlled within 10 mm. 2 ~2600mm 2 .

[0021] The elastic support body is any one of different types of elastic rubber and springs, and its shape is any one of a cylinder and a prism, its bottom diameter or side length is controlled within 3mm to 10mm, and its height is controlled within 10mm to 30mm.

[0022] Preferably, the elastic support body is arranged in the support plate of the friction nano power generation layer so that the support plate can be effectively contacted and separated. At the same time, under the condition of meeting the mechanical indicators, it can be arranged in an interval or plum blossom shape to further save costs.

[0023] Preferably, the elastic support body is tightly bonded to the egg-tray upper support plate and the egg-tray lower support plate by using any one of structural sealant, silicone waterproof sealant, two-component silicone glue (glass glue), two-component polysulfide glue and two-component polyurethane.

[0024] Wherein, the metal electrode layer material is selected from any one of copper sheet / copper foil and aluminum sheet / aluminum foil.

[0025] Preferably, the metal electrode layer is adhered to the surface of each layer of the egg tray, and the thickness of the metal electrode layer is controlled to be 0.1 mm to 2.5 mm.

[0026] Preferably, the metal electrode layer and the first polar friction surface can be made of the same material. In this case, the two do not need to be superimposed, and only one layer of material is needed to play two roles.

[0027] Preferably, when the metal electrode layer contacts the second polarity friction surface, the protrusions and grooves are removed and a hole form is adopted.

[0028] Among them, the first polarity friction surface and the second polarity friction surface use two materials with opposite polarities as their upper and lower surfaces respectively. At the same time, the friction nano-power generation mode of the plate adopts a contact-separation mode. Under the action of driving load, the first polarity friction surface and the second polarity friction surface continuously contact and separate to generate electric charges, which are transferred to the energy storage device through the metal electrode layer.

[0029] Preferably, the first polar friction surface material is any one of polyvinyl alcohol, polymethyl methacrylate, rayon, copper, silver, sulfur, nickel, hard rubber, wood, cotton and its fabrics, paper, aluminum, wool and its fabrics, silk and its fabrics, melamine, nylon, ethyl cellulose, and polyoxymethylene.

[0030] Preferably, the material of the second polar friction surface is any one of polyester, polyisobutylene, polyurethane, polyethylene terephthalate, polyvinyl butyral, chloroprene rubber, natural rubber, polyacrylonitrile, chloronitrile, polycarbonate bisphenol, polychloroether, polyvinylidene chloride, polystyrene, polyethylene, polypropylene, polyimide, polyvinyl chloride, polydimethylsiloxane, and polytetrafluoroethylene.

[0031] Preferably, the second polar friction surface can be formed or polished to prepare friction surfaces with different roughness by selecting sandpaper with different mesh sizes, and its thickness is controlled within the range of 0.1 mm to 2.5 mm.

[0032] Preferably, the second polar friction surface can be pasted or bonded to the metal electrode layer using a conductive adhesive material, such as conductive adhesives with different fillers: high conductive silver-copper epoxy conductive adhesive, graphene nanosilver epoxy conductive adhesive, high durability epoxy conductive adhesive, 400°C cyanate resistant conductive adhesive, low temperature curing nanosilver conductive adhesive, stretchable conductive adhesive, etc.

[0033] The rectifying circuit layer is connected to the metal electrode layer through a copper wire or an aluminum wire, and the alternating current generated by the friction nano-power generation layer is converted into direct current and then transmitted to the roadside energy storage device for energy collection.

[0034] The construction method for the egg-tray type friction nano power generation pavement comprises the following steps:

[0035] Step 1: Prefabricate the compression protection layer and high-strength bearing layer: Prefabricate the compression protection panel and high-strength bearing bottom plate according to the highway grade, traffic load grade, structural layer, construction conditions and egg-tray type friction nano-power generation pavement plate size design plan. When the plate is placed on the surface layer, the compression protection panel needs to be anti-slip treated;

[0036] Step 2, making each layer of pallets: according to the traffic load level, structural layer, construction conditions, power generation requirements, and the structural selection and size design scheme of the egg tray body, the egg tray type upper layer pallet, egg tray type middle layer pallet and egg tray type lower layer pallet are formed;

[0037] Step 3, pasting the metal electrode layer and the two polar friction surfaces: the metal electrode layer is tightly adhered to the egg tray surface of each layer of the support plate, and two first polar friction surfaces and second polar friction surfaces with opposite polarities are prepared and then tightly adhered to the metal electrode layer respectively;

[0038] Step 4, fixing the elastic support body: fixing the elastic support body at the holes of each layer of the egg tray type support plate, so that each layer can be connected into a whole, ensuring that they can be effectively contacted under load and effectively separated under no load;

[0039] Step 5: Encapsulate the friction nano power generation layer: fix the rectifier circuit layer to the bottom of the egg-tray lower tray, connect the rectifier circuit layer to each metal electrode layer, and reserve an interface for connecting with the roadside energy storage device in the friction nano power generation layer. At the same time, use waterproof material to seal the friction nano power generation layer to prevent water vapor from invading and causing the power generation structure to fail.

[0040] Step 6, assembling the egg-tray type friction nano power generation pavement plate: tightly combining the compressive protection layer, the friction nano power generation layer, and the high-strength bearing layer through any one of bonding materials, rivets, and bolts to form the egg-tray type friction nano power generation pavement plate;

[0041] Step 7: Install the egg-tray type friction nano-power generation pavement slab: According to the pavement size and structural design requirements, it can be directly laid on the surface layer and between the structural layer of the newly built asphalt pavement or cement concrete pavement, or it can be directly laid on the surface layer of the existing asphalt pavement or cement concrete pavement;

[0042] Step 8, connecting the egg-tray type friction nano power generation system: according to the design scheme of the egg-tray type friction nano power generation system, multiple egg-tray type friction nano power generation pavement blocks are connected in series and parallel, and then connected to the roadside energy storage device to form an egg-tray type friction nano power generation system;

[0043] Step nine, complete the construction of the egg-tray friction nano-power generation pavement: when placing the slab on the surface layer, it is necessary to apply adhesive material on the surface layer at the bottom of the egg-tray friction nano-power generation pavement slab; when placing the slab between the structural layers, it is necessary to apply adhesive material on the surface layer at the top and bottom of the egg-tray friction nano-power generation pavement slab, and then fix the egg-tray friction nano-power generation pavement slab in the corresponding position to ensure the use function of the newly built asphalt pavement and cement concrete pavement.

[0044] Compared with the prior art, the present invention has the following advantages:

[0045] The egg-tray type friction nano-power generation pavement block disclosed in the present invention is a structural device that applies friction nano-power generation technology to road engineering to collect road vibration energy. The principle of the block is the coupling effect of friction power generation and electrostatic induction. The electron transfer generated by the interaction between polar materials generates charge exchange to achieve the collection of electric energy. The present invention uses materials with excellent mechanical properties to make a compressive protective layer. The polar friction surfaces of the friction nano-power generation layer interact to generate electric energy, and a high-strength bearing layer is arranged thereunder to ensure the bearing capacity of the structure. The structure is arranged as a whole on the surface layer of the traditional asphalt pavement or between the structural layers. Under the vertical force and horizontal force generated by the wheel load, it generates electric energy through the friction process of the contact-separation of the friction nano-power generation layer. The block not only has sufficient strength, stiffness and power generation performance, but also can collect the dynamic vibration mechanical energy of road vehicles; the present invention combines road engineering with energy collection, solves the problem of low-quality energy utilization touched by vehicle load, and has broad application potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0047] Figure 1 It is a schematic diagram of the three-dimensional structure of the egg-tray type friction nano-power generation pavement block of the present invention.

[0048] Figure 2 It is a three-dimensional structural development diagram of the egg-tray type friction nano-power generation pavement block of the present invention.

[0049] Figure 3 It is a cross-sectional view of the egg-tray type friction nano-power generation pavement block of the present invention.

[0050] Figure 4 It is a schematic diagram of the construction method of the egg-tray type friction nano-power generation pavement slab of the present invention.

[0051] The symbols in the figure represent:

[0052] 1. Compression protection layer; 2. Friction nano power generation layer; 21. Egg-tray upper support plate; 211. Egg-tray insulating plate; 2111. Protrusion; 2112. Groove; 212. Metal electrode layer; 213. First polarity friction surface 22. Middle support plate; 221. Second polarity friction surface; 23. Egg-tray lower support plate; 24. Rectifier circuit layer; 25. Elastic support body; 3. High-strength bearing layer. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be understood that the specific implementation methods described below are only used to illustrate and explain the present invention, and are not used to limit the present invention. The directional terms mentioned in the present invention, such as "upper", "lower", etc., are only reference to the directions of the drawings, and are not used to limit the scope of protection of the present invention.

[0054] like Figures 1 to 3 An embodiment of an egg-tray type friction nano power generation plate of the present invention is shown, which includes a compressive protection layer 1, a friction nano power generation layer 2, and a high-strength bearing layer 3, wherein the friction nano power generation layer 2 is provided with an egg-tray type upper support plate 21, an egg-tray type lower support plate 23, an elastic support body 25, an egg-tray type insulating plate 211, a protrusion 2111, a groove 2112, a metal electrode layer 212, a first polarity friction surface 213, and a second polarity friction surface 221; at the same time, the elastic support body 25, the rectifier circuit layer 24 and the metal electrode layer 212 are respectively tightly combined with the compressive protection layer 1 and the high-strength bearing layer 3 through the upper and lower support plates to form a whole.

[0055] In this embodiment, the plate is applied to the motor vehicle lane of a secondary highway, and the egg-tray-type friction nano power generation plate is a regular rectangular structure, with a length of 200 mm, a width of 200 mm, and a height of 55 mm.

[0056] In this embodiment, the compression protection layer 1 is made of a glass fiber board, the surface of which is anti-slip treated, and the thickness is 5 mm.

[0057] In this embodiment, the friction nano power generation layer 2 has a thickness of 45 mm.

[0058] In this embodiment, the high-strength bearing layer 3 is made of glass fiber board with a thickness of 5 mm.

[0059] In this embodiment, the panels are arranged on the surface layer of a newly built asphalt pavement, and modified asphalt is used as the bonding material.

[0060] In this embodiment, the egg-tray type upper support plate 21 is located between the metal electrode layer 212 and the pressure-resistant protection layer 1, the metal electrode layer 212 and the rectifier circuit layer 24, and the test mold is prepared by 3D printing. The egg-tray type insulating plate 211 is cast with epoxy resin, and the mass component ratio of the raw materials used is unsaturated polyester resin 1000: curing agent 3: accelerator 10.

[0061] In this embodiment, the protrusion 2111 and the groove 2112 in the support plate adopt a cosine function to rotate around the vertical axis to form a rotating egg tray structure to reduce the stress concentration phenomenon with the plane edge. The function expression is: The function period is 40mm, the protrusion height is 9mm, the centers of adjacent egg trays are 50mm apart, and the spacing between the trays is 1mm. The upper and lower egg trays can fit together, and the protrusion of the egg-tray upper tray 21 must be ensured to be 2 / 5 in the egg-tray lower tray 23. This egg tray can ensure that the upper and lower structures are in mutual interlocking contact under the action of vehicle loads, prevent spatial dislocation of the pavement panel structure caused by dynamic loads, and make full use of the contact generated by horizontal displacement to generate electricity.

[0062] In this embodiment, the elastic support body 25 is made of elastic rubber material and is shaped like a cylinder with a bottom diameter of 5 mm and a height of 12 mm. It is connected to the holes in the upper and lower support plates through glass glue material, and the friction nano power generation layer 2 is connected into a whole through the elastic support body 25.

[0063] In this embodiment, the metal electrode layer 212 is made of copper foil, and the upper layer of the friction nano power generation layer 2 uses copper foil as the material of the metal electrode layer 212 and the first polar friction surface 213, and the thickness is 0.1 mm.

[0064] In this embodiment, the second polar friction surface 221 of the lower layer of the friction nano power generation layer 2 is made of polytetrachloroethylene (PDMS) with a thickness of 0.1 mm and a relative dielectric constant of 2.75 to 2.85.

[0065] In this embodiment, the second polar friction surface 221 is made by pouring a PDMS liquid with a curing agent added on 5000-grit sandpaper to form a thin film, and contacting the smooth surface with the electrode layer during semi-curing to form a friction surface after curing. The bonding material uses a high-durability epoxy conductive adhesive.

[0066] In this embodiment, the rectifier circuit layer 24 has a thickness of 5 mm and is connected to the metal electrode layer 212 via copper wires.

[0067] In this embodiment, in addition to the use of high-durability epoxy conductive adhesive for bonding the polar friction surface, structural sealant is used as the bonding material inside the plate.

[0068] In this embodiment, the construction method for the egg-tray type friction nano power generation pavement includes the following steps:

[0069] Step 1: Prefabricate the compression protection layer 1 and the high-strength bearing layer 3: Prefabricate the compression protection panel and the high-strength bearing bottom plate according to the highway grade, traffic load grade, structural layer, construction conditions and the size design scheme of the egg-tray type friction nano-power generation pavement plate. When the plate is placed on the surface layer, the compression protection panel needs to be anti-slip treated;

[0070] Step 2, making each layer of support plates: according to the traffic load level, structural layer, construction conditions, power generation requirements and the structural selection and size design scheme of the egg tray body, the egg tray type upper support plate 21 and the egg tray type lower support plate 23 are formed;

[0071] Step 3, pasting the metal electrode layer 212 and the second polar friction surface 221: the metal electrode layer 212 is tightly adhered to the egg tray surface of each layer of the support plate, and the second polar friction surface 221 is tightly adhered to the metal electrode layer 212 after being obtained;

[0072] Step 4, fixing the elastic support body 25: fixing the elastic support body 25 at the holes of each layer of the egg tray type support plate, so that each layer can be connected into a whole, ensuring that they can be effectively contacted under load and effectively separated under no load;

[0073] Step 5, encapsulating the friction nano power generation layer 2: fixing the rectifier circuit layer 24 to the bottom of the egg-tray type lower support plate 23, connecting the rectifier circuit layer 24 to each metal electrode layer 212, and reserving an interface for connecting with the roadside energy storage device in the friction nano power generation layer 2, and sealing the friction nano power generation layer 2 with a waterproof material to prevent water vapor from invading and causing the power generation structure to fail;

[0074] Step 6, assembling the egg-tray type friction nano power generation pavement plate: tightly combining the compressive protection layer 1, the friction nano power generation layer 2, and the high-strength bearing layer 3 by any one of bonding materials, rivets, and bolts to form the egg-tray type friction nano power generation pavement plate;

[0075] Step 7: Install the egg-tray type friction nano-power generation pavement slab: According to the pavement size and structural design requirements, it can be directly laid on the surface layer and between the structural layer of the newly built asphalt pavement or cement concrete pavement, or it can be directly laid on the surface layer of the existing asphalt pavement or cement concrete pavement;

[0076] Step 8, connecting the egg-tray type friction nano power generation system: according to the design scheme of the egg-tray type friction nano power generation system, multiple egg-tray type friction nano power generation pavement blocks are connected in series and parallel, and then connected to the roadside energy storage device to form an egg-tray type friction nano power generation system;

[0077] Step nine, complete the construction of the egg-tray friction nano-power generation pavement: when placing the slab on the surface layer, it is necessary to apply adhesive material on the surface layer at the bottom of the egg-tray friction nano-power generation pavement slab; when placing the slab between the structural layers, it is necessary to apply adhesive material on the surface layer at the top and bottom of the egg-tray friction nano-power generation pavement slab, and then fix the egg-tray friction nano-power generation pavement slab in the corresponding position to ensure the use function of the newly built asphalt pavement and cement concrete pavement.

[0078] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. An egg-tray type friction nano-power generation pavement block, characterized in that: From top to bottom, it includes at least a compressive protection layer (1), a friction nano-power generation layer (2), and a high-strength bearing layer (3). The three layers can be tightly connected to form a whole using any one of adhesive materials, rivets and bolts, and are sealed on all sides using waterproof materials. The planar shape of the plate can be any one of a rectangle and a hexagon. At the same time, multiple unit plates can be assembled into an overall structure, which can be directly laid on the surface layer of the road surface and between the structural layers.

2. The pavement block according to claim 1, characterized in that: The thickness of the compression protection layer (1) is in the range of 5 mm to 100 mm, the thickness of the friction nano power generation layer (2) is in the range of 30 mm to 200 mm, and the thickness of the high-strength bearing layer (3) is in the range of 5 mm to 200 mm; the side length of the plate plane is not less than 100 mm.

3. The pavement block according to claim 1, characterized in that: The friction nano power generation layer (2) is composed of an egg-tray type upper support plate (21), an egg-tray type middle support plate (22) and an egg-tray type lower support plate (23) connected into a whole through a columnar elastic support body (25); the inner core structure of the egg-tray type upper support plate (21), the egg-tray type middle support plate (22) and the egg-tray type lower support plate (23) are all egg-tray type insulating plates (211); the bottom surface of the egg-tray type insulating plate (211) of the egg-tray type upper support plate (21) is sequentially adhered to a metal electrode layer (212) and a first polarity friction surface (213); the friction nano One or more egg-tray type middle-layer support plates (22) may be added to the power generation layer (2), which are provided with a first polarity friction surface (213), a metal electrode layer (212), an egg-tray type insulating plate (211), a metal electrode layer (212) and a second polarity friction surface (221) from top to bottom; the metal electrode layer (212) and the second polarity friction surface (221) are sequentially adhered to the top surface of the egg-tray type insulating plate (211) of the egg-tray type lower-layer support plate (23), and a rectifier circuit layer (24) connected to the upper and lower metal electrode layers (212) is provided on the bottom surface.

4. The pavement block according to claim 1, characterized in that: The plate surface of the egg-tray type insulating plate (211) in the friction nano power generation layer (2) adopts a geometric curved three-dimensional structure of a plurality of protrusions (2111) and grooves (2112) in any combination, and the plate surface protrusions (2111) and grooves (2112) of each layer of the egg-tray type support plate correspond to each other and can mesh with each other; at the same time, the contact and separation between each layer of the egg-tray type support plate is ensured by an elastic support body (25), and the elastic support body (25) is used to ensure that there is a spacing of 0.5mm to 10mm between each layer when separated, and to ensure that at least 2 / 5 of the height of the top of each layer of the protrusion (2111) is embedded in the corresponding groove (2112) of another layer.

5. The pavement block according to claim 3, characterized in that: The columnar elastic support body (25) is made of any one of elastic rubber and spring materials, and is placed at the bottom of the groove (2112) opened in the egg-tray type lower support plate (23) of the friction nano power generation layer (2), or can be placed at the opening between the protrusion (2111) and the groove (2112), so as to ensure that the first polarity friction surface (213) and the second polarity friction surface (221) can contact each other and generate electricity under the action of the vehicle load, and restore the initial separation state under the no-load condition.

6. The pavement block according to claim 3, characterized in that: The first polarity friction surface (213) and the second polarity friction surface (221) are made of two materials with opposite polarities, and the plate adopts a contact-separation friction power generation mode. Under the action of the vehicle load, the first polarity friction surface (213) and the second polarity friction surface (221) are continuously in contact and separated to generate electric charges, which are transferred to the rectification circuit layer (24) through the metal electrode layer (212); the rectification circuit layer (24) adopts a bridge rectification circuit, the input ends of which are connected to the metal electrode layers (212) in each layer of the egg-tray type support plate, and the output current is integrated, and the two ends are connected to the roadside energy storage device for electric energy collection.

7. A construction method for an egg-tray type friction nano-power generation pavement slab, characterized in that: The steps include: Step 1, prefabricate the compressive protection layer (1) and the high-strength bearing layer (3): prefabricate the compressive protection panel and the high-strength bearing bottom plate according to the highway grade, traffic load grade, structural layer, construction conditions and the egg-tray type friction nano-power generation pavement plate size design plan, and the compressive protection panel needs to be anti-slip treated when the plate is placed on the surface layer; Step 2, making each layer of support plates: according to the traffic load level, structural layer position, construction conditions, power generation requirements and the structural selection and size design scheme of the egg tray body, forming an egg tray type upper support plate (21), an egg tray type middle support plate (22) and an egg tray type lower support plate (23); Step 3, pasting the metal electrode layer (212) and the two polar friction surfaces: the metal electrode layer (212) is tightly adhered to the egg tray surface of each layer of the support plate, and two first polar friction surfaces (213) and second polar friction surfaces (221) with opposite polarities are prepared, and then they are tightly adhered to the metal electrode layer (212); Step 4, fixing the elastic support body (25): fixing the elastic support body (25) at the holes of each layer of the egg tray support plate, so that each layer can be connected into a whole, ensuring that they can be effectively contacted under load and effectively separated under no load; Step 5, encapsulating the friction nano power generation layer (2): fixing the rectifier circuit layer (24) to the bottom of the egg-tray type lower support plate (23), connecting the rectifier circuit layer (24) to each metal electrode layer (212), and reserving an interface for connecting with the roadside energy storage device in the friction nano power generation layer (2), and using waterproof material to seal the friction nano power generation layer (2) to prevent water vapor from invading and causing the power generation structure to fail; Step 6, assembling the egg-tray type friction nano power generation pavement plate: tightly combining the compressive protection layer (1), the friction nano power generation layer (2), and the high-strength bearing layer (3) by any one of adhesive materials, rivets, and bolts to form the egg-tray type friction nano power generation pavement plate; Step 7: Install the egg-tray type friction nano-power generation pavement slab: According to the pavement size and structural design requirements, it can be directly laid on the surface layer and between the structural layer of the newly built asphalt pavement or cement concrete pavement, or it can be directly laid on the surface layer of the existing asphalt pavement or cement concrete pavement; Step 8, connecting the egg-tray type friction nano power generation system: according to the design scheme of the egg-tray type friction nano power generation system, multiple egg-tray type friction nano power generation pavement blocks are connected in series and parallel, and then connected to the roadside energy storage device to form an egg-tray type friction nano power generation system; Step nine, complete the construction of the egg-tray friction nano-power generation pavement: when placing the slab on the surface layer, it is necessary to apply adhesive material on the surface layer at the bottom of the egg-tray friction nano-power generation pavement slab; when placing the slab between the structural layers, it is necessary to apply adhesive material on the surface layer at the top and bottom of the egg-tray friction nano-power generation pavement slab, and then fix the egg-tray friction nano-power generation pavement slab in the corresponding position to ensure the use function of the newly built asphalt pavement and cement concrete pavement.

Images