Self-powered street lamp and preparation method and application thereof

Abstract

The invention relates to a self-powered street lamp and a preparation method and application thereof. The self-powered street lamp comprises a lamp pole, a wire and a lighting facility. The lamp pole comprises a structural energy storage body which has a structural supporting effect on the lamp pole; the structural energy storage body is connected with external electric energy and lighting facilities through wires. The preparation method of the structural energy storage body comprises the following steps: preparing cement-based printing slurry; filling the cement-based printing slurry into a 3D printing device, and stacking layer by layer to form a printing body; curing, maintaining, trimming and drying the printing body, and immersing the printing body into a soluble alkali / salt solution to obtain a cement-based electrolyte; a soluble alkali / salt solution is dropwise added to the surface of the electrode, then the electrode and the cement-based electrolyte are stacked and assembled, and an assembly is obtained; sealing and packaging the assembly body to obtain a structural energy storage body; a printing interlayer interface of the cement-based electrolyte has a directionally arranged pore structure, the pore diameter is 0.5-20 microns, and the porosity is 10-50%; and the hole orientation of the hole structure is consistent with the ion migration direction between the electrodes.

Description

Technical Field

[0001] This application relates to the field of road lighting technology, and in particular to a self-powered street lamp, its manufacturing method, and its application. Background Technology

[0002] Streetlights, as an important component of urban infrastructure, play an irreplaceable role in improving nighttime traffic safety, enhancing the urban environment, and extending the hours of commercial activities.

[0003] Existing street lighting systems primarily rely on municipal power grids for power, making their operational stability susceptible to external factors such as extreme weather, power outages, and maintenance. Power outages directly disrupt street lighting, reducing nighttime travel safety, especially during disasters like earthquakes and typhoons, which can easily lead to traffic accidents and security risks. Furthermore, in remote areas or regions with insufficient municipal power grid coverage, street light deployment and operation are even more challenging, severely hindering the widespread adoption and development of basic lighting infrastructure.

[0004] Therefore, it is of great significance to provide a road lighting system that can break free from dependence on traditional mains power. Summary of the Invention

[0005] The main objective of this application is to provide a self-powered street light, its manufacturing method, and its application. The technical problem to be solved is how to provide a self-powered street light that can get rid of dependence on traditional mains power and can be applied to scenarios where power supply is difficult or where high flexibility in deployment is required, such as mountain roads, remote villages, and temporary construction roads, thus making it more suitable for practical use.

[0006] The objective of this invention and the technical problem it solves are achieved through the following technical solution. A self-powered street light according to this invention comprises:

[0007] Lamp poles, wires, and lighting fixtures;

[0008] The aforementioned light pole includes a structural energy storage body, which provides structural support for the aforementioned light pole; the aforementioned structural energy storage body is connected to external electrical energy and the aforementioned lighting facilities through the aforementioned wires.

[0009] The aforementioned method for preparing a structural energy storage body includes the following steps:

[0010] S1: Preparation of cement-based printing paste;

[0011] S2: The aforementioned cement-based printing paste is loaded into a 3D printing device and deposited layer by layer to form a printed body;

[0012] S3: After curing, trimming, and drying the aforementioned printed body, immerse it in a soluble alkali / salt solution to obtain a cement-based electrolyte.

[0013] S4: Add a soluble alkali / salt solution to the electrode surface, then stack and assemble the aforementioned electrode with the aforementioned cement-based electrolyte to obtain an assembly; seal and package the aforementioned assembly to obtain the aforementioned structural energy storage body;

[0014] The aforementioned cement-based electrolyte has a oriented pore structure at the printing interlayer interface with a pore size of 0.5–20 μm and a porosity of 10%–50%; the pore orientation of the aforementioned pore structure is consistent with the ion migration direction between the aforementioned electrodes.

[0015] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0016] Preferably, in the aforementioned self-powered street light, the light pole further includes a reinforcing protective layer, which is wrapped around the exterior of the aforementioned structural energy storage body; the aforementioned reinforcing protective layer is made of fiber-reinforced cement-based material.

[0017] Preferably, in the aforementioned self-powered street light, a conductive reinforcing rib is pre-embedded in the energy storage body; the longitudinal direction of the aforementioned conductive reinforcing rib is consistent with the ion migration direction between the aforementioned electrodes.

[0018] Preferably, in the aforementioned self-powered street light, the conductive reinforcing ribs are nickel-plated steel fibers or carbon fiber bundles.

[0019] Preferably, in the aforementioned self-powered street light, the external electrical energy comes from at least one of solar cells and wind power generation devices.

[0020] Preferably, in the aforementioned self-powered street light, the cement-based printing paste comprises the following components in parts by weight:

[0021] Cementitious material: 80-120 parts;

[0022] Polymer: 2-25 parts;

[0023] Water-reducing agent: 0.1–2 parts;

[0024] Accelerator: 0.5–10 parts;

[0025] Air-entraining agent: 0.002–0.1 parts;

[0026] Water: 28–65 parts.

[0027] The objective of this invention and the solution to its technical problem are further achieved by the following technical solution. According to this invention, a method for manufacturing a self-powered street light is proposed, the steps of which include:

[0028] Q1: Based on the size requirements of the light pole and the energy storage capacity requirements, use model design software to design a three-dimensional model of the electrolyte layer and the electrode embedding position, and use slicing software to generate the 3D printing path of the energy storage structure.

[0029] Q2: Prepare cement-based printing slurry; load the aforementioned cement-based printing slurry into a 3D printing device, and print layer by layer according to the aforementioned 3D printing path to form a printed body; cure and maintain the aforementioned printed body, trim and dry it, and then immerse it in a soluble alkali / salt solution to obtain a cement-based electrolyte; drop a soluble alkali / salt solution onto the electrode surface, and then stack and assemble the aforementioned electrode and the aforementioned cement-based electrolyte to obtain an assembly; seal and package the aforementioned assembly to obtain the aforementioned structural energy storage body;

[0030] The aforementioned cement-based electrolyte has a oriented pore structure at the printing interlayer interface, with a pore size of 0.5–20 μm and a porosity of 10%–50%; the pore orientation of the aforementioned pore structure is consistent with the ion migration direction between the aforementioned electrodes.

[0031] Q3: Install the aforementioned structural energy storage body into the aforementioned light pole, and connect the aforementioned structural energy storage body to external power and lighting facilities through wires.

[0032] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0033] Preferably, in the aforementioned method for preparing a self-powered street light, in step Q2, conductive reinforcing ribs are pre-embedded during printing; the longitudinal direction of the aforementioned conductive reinforcing ribs is consistent with the ion migration direction between the aforementioned electrodes.

[0034] Preferably, in the aforementioned method for preparing a self-powered street light, the aforementioned conductive reinforcing ribs are nickel-plated steel fibers or carbon fiber bundles.

[0035] The objective of this invention and the solution to its technical problem are also achieved by the following technical solution. This invention proposes a road lighting system, including any of the aforementioned self-powered streetlights.

[0036] By employing the above technical solution, the self-powered street light, its manufacturing method, and its application, as described in this application, have at least the following advantages:

[0037] (1) The light pole integrates a weather-resistant, long-life cement-based energy storage structure, serving both as a support and energy storage device. This not only greatly simplifies the overall layout of the street light system and eliminates the traditional model of stacking battery cabinets next to street lights, but also effectively reduces construction costs because there is no need to purchase energy storage equipment separately, carry out installation and construction, and lay power supply lines.

[0038] (2) The electrolyte of the cement-based energy storage body is a solid cement matrix, and the electrodes are completely wrapped in it, so there is no risk of electrolyte leakage; and the cement material has good heat insulation and insulation properties, which can avoid fire and explosion caused by short circuit and overheating.

[0039] (3) This application is the first to reverse the low density and high porosity connectivity of the weak interlayer interface region in 3D printed components to construct a directionally arranged pore structure as an efficient ion migration channel, which improves the ionic conductivity of cement-based electrolyte and significantly enhances the energy density and charge / discharge speed of cement-based energy storage.

[0040] (4) The cement-based electrolyte structured energy storage device prepared in this application allows for the control of the size of the directional pore structure by adjusting parameters such as interlayer interval time, printing speed, and layer height during the printing process. This offers advantages such as low cost, simple operation process, and ease of large-scale fabrication. Furthermore, combined with subsequent optimization measures such as interface functionalization treatment, the ion conduction performance of the directional pore structure and the overall device performance can be further improved.

[0041] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the assembly of the structural energy storage body in some embodiments of the present invention;

[0043] Figure 2 The AC impedance spectral curves of the structural energy storage bodies prepared in Examples 1-3 and Comparative Example 1 of this invention are shown.

[0044] Figure 3 The ionic conductivity of the structural energy storage bodies prepared in Examples 1-3 and Comparative Example 1 of this invention;

[0045] Figure 4 The cyclic voltammetry curves of the structural energy storage body prepared in Example 1 of this invention are shown.

[0046] Figure 5 The constant current charge-discharge curve of the structural energy storage body prepared in Example 1 of this invention;

[0047] Figure 6 This is a pore structure morphology diagram of the cross-section of the cement-based electrolyte in Embodiment 1 of the present invention;

[0048] Figure 7 This is a schematic diagram of a self-powered street light in some embodiments of this application;

[0049] Figure 8 This is a schematic diagram of the self-powered street light in Embodiment 5 of this application;

[0050] Figure 9 This is a schematic diagram of the self-powered street light in Embodiment 6 of this application;

[0051] Icons: 1-External power source; 2-Wire; 3-Lamp post; 4-Lighting facility; 5-Wind turbine; 6-Tower; 7-Transmission device; 8-Solar panel. Detailed Implementation

[0052] To further illustrate the technical means and effects adopted by this application to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, provides a detailed description of the specific implementation methods, structures, features, and effects of a self-powered street lamp and its preparation method based on this application. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0053] This application proposes a self-powered street light, such as... Figure 7 As shown, it includes:

[0054] 3. Lamp post; 2. Wire; and 4. Lighting fixtures;

[0055] The aforementioned light pole 3 includes a structural energy storage body, which provides structural support for the aforementioned light pole 3; the aforementioned structural energy storage body is connected to the external power source 1 and the aforementioned lighting facility 4 via the aforementioned wire 2.

[0056] The aforementioned method for preparing a structural energy storage body includes the following steps:

[0057] S1: Preparation of cement-based printing paste;

[0058] S2: The aforementioned cement-based printing paste is loaded into a 3D printing device and deposited layer by layer to form a printed body;

[0059] S3: After curing, trimming, and drying the aforementioned printed body, immerse it in a soluble alkali / salt solution to obtain a cement-based electrolyte.

[0060] S4: Add a soluble alkali / salt solution to the electrode surface, then stack and assemble the aforementioned electrode with the aforementioned cement-based electrolyte to obtain an assembly; seal and package the aforementioned assembly to obtain the aforementioned structural energy storage body;

[0061] The aforementioned cement-based electrolyte has a oriented pore structure at the printing interlayer interface with a pore size of 0.5–20 μm and a porosity of 10%–50%; the pore orientation of the aforementioned pore structure is consistent with the ion migration direction between the aforementioned electrodes.

[0062] Specifically, the external electrical energy 1 can be obtained from the power grid or from renewable energy conversion. Furthermore, the external electrical energy 1 can be obtained from at least one of solar cells and wind power generation devices.

[0063] The structural energy storage body not only performs the function of storing electrical energy but also serves as a structural support. The structural energy storage body includes electrodes and a cement-based electrolyte. The electrodes include a positive electrode material layer and a negative electrode material layer; further, the positive and negative electrode material layers include: single-material electrodes and composite material electrodes; further, the single-material electrodes are one of the following: metal electrodes (iron, nickel, copper, aluminum, etc.), carbon material electrodes (graphite, carbon fiber, graphene, etc.), and lithium compound electrodes (lithium iron phosphate electrodes, lithium manganese oxide electrodes, lithium cobalt oxide electrodes, lithium nickel cobalt oxide electrodes, ternary lithium electrodes, etc.); further, the composite electrodes are one or more of the following: metal oxide and carbon material composite electrodes, conductive polymer and metal composite electrodes, multiple metal composite electrodes, carbon material and metal compound composite electrodes, and cement-based composite electrodes.

[0064] Furthermore, the cement-based printing paste comprises the following components in parts by weight:

[0065] Cementitious material: 80-120 parts;

[0066] Polymer: 2-25 parts;

[0067] Water-reducing agent: 0.1–2 parts;

[0068] Accelerator: 0.5–10 parts;

[0069] Air-entraining agent: 0.002–0.1 parts;

[0070] Water: 28–65 parts.

[0071] Furthermore, the cement-based printing paste comprises the following components in parts by weight:

[0072] Cementitious material: 95-105 parts;

[0073] Polymer: 5-20 parts;

[0074] Water-reducing agent: 0.3–0.6 parts;

[0075] Thickener: 0.08–0.25 parts;

[0076] Accelerator: 2-4 parts;

[0077] Air-entraining agent: 0.008–0.05 parts;

[0078] Water: 36-44 parts.

[0079] Furthermore, the cementing materials mentioned above include, but are not limited to, ordinary silicate cement, sulfoaluminate cement, aluminate cement, magnesium cement, and geopolymer cementing materials. Cementing materials prepared mainly from solid waste, such as fly ash, granulated blast furnace slag powder, steel slag, red mud, coal gangue, construction demolition waste, and urban solid waste incineration fly ash, can also be selected as cementing systems after mechanical activation, heat treatment, or chemical activation. Alternatively, mineral admixtures such as limestone powder, silica fume, and metakaolin can be compounded with the above cementing materials to form a composite cementing system, wherein ordinary silicate cement is preferred.

[0080] Furthermore, the polymers include, but are not limited to, polyvinyl alcohol (PVA), polyacrylamide (PAM), polyacrylic acid (PAA), polyvinylpyrrolidone (PVP), hydroxypropyl methylcellulose (HPMC), and polyurethane (PU), with polyacrylamide (PAM) being preferred.

[0081] Furthermore, the water-reducing agent includes, but is not limited to, polycarboxylate-based water-reducing agents, naphthalene-based water-reducing agents, sulfonated melamine-formaldehyde condensate water-reducing agents, lignin sulfonate water-reducing agents, and combinations thereof, with polycarboxylate-based water-reducing agents being preferred.

[0082] Furthermore, the accelerator includes, but is not limited to, aluminate accelerators, sulfoaluminate accelerators, nitrate accelerators, sulfate accelerators, and mixtures thereof, with aluminate accelerators being preferred.

[0083] Furthermore, the air-entraining agent includes, but is not limited to, alkyl sulfate air-entraining agents, rosin soap air-entraining agents, alkyl hydrocarbon sulfonate air-entraining agents, fluorocarbon surfactants and combinations thereof, wherein alkyl sulfate air-entraining agents are preferred.

[0084] Furthermore, the water in question is tap water, which complies with GB5749-2022 "Standards for Drinking Water Quality".

[0085] Cement-based electrolytes possess an oriented pore structure with pore sizes ranging from 0.5 to 20 μm and porosities from 10 to 50%. The pore orientation aligns with the ion migration direction between electrodes. Using 3D printing, cement-based electrolytes can form an ordered pore structure at the layer / strip interface. This pore structure serves as a rapid ion migration channel, effectively improving the ion transport efficiency within the electrolyte.

[0086] Furthermore, the dimensions of the oriented hole structure can be controlled through 3D printing process parameters, including but not limited to:

[0087] The interlayer interval time is 1–100 min, with a preferred range of 20–60 min;

[0088] The floor height is 4–50 mm, with a preferred range of 10–20 mm;

[0089] The nozzle diameter is 5–40 mm, with a preferred range of 7–18 mm;

[0090] The printing speed is 5–100 mm / s, with an optimal range of 10–50 mm / s.

[0091] The extrusion speed is 0.1 to 1 rad / s, with a preferred range of 0.2 to 0.5 rad / s.

[0092] Furthermore, the oriented pore structure can be functionalized to enhance its ion conductivity. Such functionalization includes, but is not limited to:

[0093] During the interlayer deposition interval, an aqueous solution containing a soluble alkali / salt, preferably a potassium hydroxide solution, is sprayed at the interlayer interface.

[0094] During the interlayer deposition interval, a polymer material, preferably polyacrylamide, is applied to the interlayer interface.

[0095] Furthermore, during the interlayer deposition interval, a 5–7 mol / L potassium hydroxide solution is sprayed at the interlayer interface at a spraying rate of 0.5–2 g / cm³. 2 ; and a polyacrylamide aqueous solution with a solid content of 25%–35%, with a spraying amount of 1–3 g / cm³. 2 .

[0096] Furthermore, in steps S3 and S4, the soluble alkali / salt includes, but is not limited to, alkaline compounds, sulfates, chlorides, nitrates, carbonates, acetates, and lithium salts, preferably potassium hydroxide; the soluble alkali / salt solution is a 5-7 mol / L potassium hydroxide solution.

[0097] Furthermore, the aforementioned light pole 3 also includes an enhanced protective layer, which is wrapped around the exterior of the aforementioned structural energy storage body; the aforementioned enhanced protective layer is composed of fiber-reinforced cement-based material.

[0098] Furthermore, the aforementioned energy storage structure contains embedded conductive reinforcing ribs; the longitudinal direction of the aforementioned conductive reinforcing ribs is consistent with the ion migration direction between the aforementioned electrodes.

[0099] Furthermore, the aforementioned conductive reinforcing ribs are nickel-plated steel fibers or carbon fiber bundles.

[0100] This invention proposes a method for manufacturing a self-powered street light, the steps of which include:

[0101] Q1: Based on the size requirements and energy storage capacity requirements of the light pole 3, use model design software to design the three-dimensional model of the electrolyte layer and the electrode embedding position, and use slicing software to generate the 3D printing path of the energy storage structure.

[0102] Q2: Prepare cement-based printing slurry; load the aforementioned cement-based printing slurry into a 3D printing device, and print layer by layer according to the aforementioned 3D printing path to form a printed body; cure and maintain the aforementioned printed body, trim and dry it, and then immerse it in a soluble alkali / salt solution to obtain a cement-based electrolyte; drop a soluble alkali / salt solution onto the electrode surface, and then stack and assemble the aforementioned electrode and the aforementioned cement-based electrolyte to obtain an assembly; seal and package the aforementioned assembly to obtain the aforementioned structural energy storage body;

[0103] The aforementioned cement-based electrolyte has a oriented pore structure at the printing interlayer interface, with a pore size of 0.5–20 μm and a porosity of 10%–50%; the pore orientation of the aforementioned pore structure is consistent with the ion migration direction between the aforementioned electrodes.

[0104] Q3: Install the aforementioned structural energy storage body into the aforementioned lamp post 3, and connect the aforementioned structural energy storage body to the external power source 1 and the lighting facility 4 through the wire 2.

[0105] Furthermore, in step Q2, conductive reinforcing ribs are pre-embedded during printing; the longitudinal direction of these ribs is consistent with the ion migration direction between the electrodes. The conductive reinforcing ribs accelerate electron movement and enhance the strength of the cement-based electrolyte. It is important to note that the conductive reinforcing ribs must not simultaneously contact the positive and negative electrodes to avoid short circuits.

[0106] Furthermore, the aforementioned conductive reinforcing ribs are nickel-plated steel fibers or carbon fiber bundles.

[0107] The present invention proposes a road lighting system, including any of the aforementioned self-powered streetlights.

[0108] The present application will be further described below with reference to specific embodiments, but this should not be construed as a limitation on the scope of protection of the present application. Some non-essential improvements and adjustments made by those skilled in the art based on the above content of the present application are still within the scope of protection of the present application.

[0109] Unless otherwise specified, all materials and reagents mentioned below are commercially available products well known to those skilled in the art; unless otherwise specified, all methods described are methods known in the art. Unless otherwise defined, the technical or scientific terms used should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains.

[0110] Example 1

[0111] This embodiment provides a structural energy storage body and its preparation method.

[0112] The structural energy storage unit comprises a magnesium cobalt layered double hydroxide / foamed nickel electrode (MgCo-LDHs@Ni), an activated carbon / foamed nickel electrode (AC@Ni), and a cement-based electrolyte. The cement-based electrolyte comprises the following components in parts by weight: cementitious material: 100 parts; polymer: 6 parts; water-reducing agent: 0.3 parts; thickener: 0.2 parts; accelerator: 2 parts; air-entraining agent: 0.01 parts; and water: 40 parts. Specifically, the cementitious material is ordinary silicate cement; the polymer is polyacrylamide (PAM); the water-reducing agent is polycarboxylate high-performance water-reducing agent with a solid content of 40%; the thickener is hydroxymethyl cellulose ether (HPMC); the accelerator comprises the following components in parts by weight: aluminate cement 50%, sodium carbonate 10%, aluminum sulfate 10%, sodium sulfate 15%, and quicklime 15%; and the air-entraining agent is hydrogen peroxide solution with a purity of 99%.

[0113] The preparation method of the structured energy storage body is as follows:

[0114] S1: Mix cement, polymer, water-reducing agent, air-entraining agent, quick-setting agent and water. First, stir at 140 r / min for 120 s, stop for 15 s, and then stir at 285 r / min for 120 s to prepare cement-based printing slurry.

[0115] S2: The prepared cement-based printing paste is loaded into a 3D printing device and deposited layer by layer to form a printed body. The printed body is 120cm long, 60mm wide, and 100mm high. The printing process is as follows: interlayer interval 30min, layer height 10mm, 10 layers, nozzle diameter 10mm, printing speed 30mm / s, and extrusion speed 0.4rad / s. During the printing deposition interval, a 6mol / L potassium hydroxide solution is sprayed at the interlayer interface at a spraying rate of 1g / cm³. 2 And a PAM aqueous solution with a solid content of 30%, with a spraying amount of 2 g / cm³. 2 .

[0116] S3: The printed body was placed in a standard curing room for 28 days for curing. After curing, the printed grooves on the surface of the printed body were removed to make the surface flat. The length of the printed body after removal was 100cm, the width was 50mm, and the height was 100mm. Then it was placed in a vacuum drying oven at 45℃ to dry to constant weight. The dried printed body was then transferred to a vacuum water retention machine with a vacuum degree of 2kPa and 6mol / L potassium hydroxide solution was introduced to allow it to fully penetrate into the pores of the printed body. After the treatment, cement-based electrolyte was obtained.

[0117] S4: Add 30 μL / cm³ of the solution to the surfaces of the magnesium cobalt layered double hydroxide / nickel foam electrode (MgCo-LDHs@Ni) and the activated carbon / nickel foam electrode (AC@Ni), respectively. 2 A 6 mol / L potassium hydroxide solution, with electrode areas of 100 cm². 2 Then, MgCo-LDHs@Ni, cement-based electrolyte, and AC@Ni are sequentially stacked and assembled in a sandwich structure, with the plane of the electrode perpendicular to the interlayer interface of the cement-based electrolyte, to obtain the assembly. The assembly is then sealed and packaged using a vacuum heat sealer to obtain the structural energy storage body.

[0118] Example 2

[0119] This embodiment provides a structural energy storage body and its preparation method.

[0120] The structural energy storage unit comprises two activated carbon / nickel foam electrodes (AC@Ni) and a cement-based electrolyte. The cement-based electrolyte consists of the following components by weight: cementitious material: 100 parts; polymer: 10 parts; water-reducing agent: 0.5 parts; thickener: 0.1 parts; accelerator: 3 parts; air-entraining agent: 0.02 parts; water: 43 parts. Specifically, the cementitious material is ordinary silicate cement; the polymer is polyacrylamide (PAM); the water-reducing agent is polycarboxylate superplasticizer with a solid content of 40%; the thickener is hydroxymethyl cellulose ether (HPMC); the accelerator comprises the following components by weight percentage: aluminate cement 50%, sodium carbonate 10%, aluminum sulfate 10%, sodium sulfate 15%, quicklime 15%; and the air-entraining agent is hydrogen peroxide solution with a purity of 99%.

[0121] The preparation method of the structured energy storage body is as follows:

[0122] S1: Mix cement, polymer, water-reducing agent, air-entraining agent, quick-setting agent and water. First, stir at 140 r / min for 120 s, stop for 15 s, and then stir at 285 r / min for 120 s to prepare cement-based printing slurry.

[0123] S2: The prepared cement-based printing paste is loaded into a 3D printing device and deposited layer by layer to form a printed body. The printed body is 120cm long, 60mm wide, and 100mm high. The printing process is as follows: interlayer interval 30min, layer height 10mm, 10 layers, nozzle diameter 10mm, printing speed 40mm / s, and extrusion speed 0.4rad / s. During the printing deposition interval, a 6mol / L potassium hydroxide solution is sprayed at the interlayer interface at a spraying rate of 1g / cm³. 2 And a PAM aqueous solution with a solid content of 30%, with a spraying amount of 2 g / cm³. 2 .

[0124] S3: The printed body was placed in a standard curing room for 28 days for curing. After curing, the printed grooves on the surface of the printed body were removed to make the surface flat. The length of the printed body after removal was 100cm, the width was 50mm, and the height was 100mm. Then it was placed in a vacuum drying oven at 45℃ to dry to constant weight. The dried printed body was then transferred to a vacuum water retention machine with a vacuum degree of 2kPa and 6mol / L potassium hydroxide solution was introduced to allow it to fully penetrate into the pores of the printed body. After the treatment, cement-based electrolyte was obtained.

[0125] S4: Add 30 μL / cm² of solution to both activated carbon / nickel foam electrodes (AC@Ni). 2 A 6 mol / L potassium hydroxide solution, with electrode areas of 100 cm². 2 Then, AC@Ni, cement-based electrolyte, and AC@Ni are sequentially stacked and assembled in a sandwich structure, with the plane of the electrode perpendicular to the interlayer interface of the cement-based electrolyte, to obtain the assembly. The assembly is then sealed and packaged using a vacuum heat sealer to obtain the structural energy storage body.

[0126] Example 3

[0127] This embodiment provides a structural energy storage body and its preparation method.

[0128] The structural energy storage unit comprises two reduced graphene oxide / nickel foam electrodes (rGO@Ni) and a cement-based electrolyte. The cement-based electrolyte comprises the following components in parts by weight: cementitious material: 100 parts; polymer: 10 parts; water-reducing agent: 0.5 parts; thickener: 0.1 parts; accelerator: 3 parts; air-entraining agent: 0.02 parts; water: 43 parts. Specifically, the cementitious material is ordinary silicate cement; the polymer is polyacrylamide (PAM); the water-reducing agent is polycarboxylate superplasticizer with a solid content of 40%; the thickener is hydroxymethyl cellulose ether (HPMC); the accelerator comprises the following components in parts by weight: aluminate cement 50%, sodium carbonate 10%, aluminum sulfate 10%, sodium sulfate 15%, quicklime 15%; and the air-entraining agent is hydrogen peroxide solution with a purity of 99%.

[0129] The preparation method of the structured energy storage body is as follows:

[0130] S1: Mix cement, polymer, water-reducing agent, air-entraining agent, quick-setting agent and water. First, stir at 140 r / min for 120 s, stop for 15 s, and then stir at 285 r / min for 120 s to prepare cement-based printing slurry.

[0131] S2: The prepared cement-based printing paste is loaded into a 3D printing device and deposited layer by layer to form a printed body. The printed body is 120cm long, 60mm wide, and 100mm high. The printing process is as follows: interlayer interval 40min, layer height 10mm, 10 layers, nozzle diameter 10mm, printing speed 30mm / s, and extrusion speed 0.4rad / s. During the printing deposition interval, a 6mol / L potassium hydroxide solution is sprayed at the interlayer interface at a spraying rate of 1g / cm³. 2 And a PAM aqueous solution with a solid content of 30%, with a spraying amount of 2 g / cm³. 2 .

[0132] S3: The printed body was placed in a standard curing room for 28 days for curing. After curing, the printed grooves on the surface of the printed body were removed to make the surface flat. The length of the printed body after removal was 100cm, the width was 50mm, and the height was 100mm. Then it was placed in a vacuum drying oven at 45℃ to dry to constant weight. The dried printed body was then transferred to a vacuum water retention machine with a vacuum degree of 2kPa and 6mol / L potassium hydroxide solution was introduced to allow it to fully penetrate into the pores of the printed body. After the treatment, cement-based electrolyte was obtained.

[0133] S4: 30 μL / cm² of solution was dropped onto both surfaces of the reduced graphene oxide / nickel foam electrode (rGO@Ni). 2 A 6 mol / L potassium hydroxide solution, with electrode areas of 100 cm². 2 Then, rGO@Ni, cement-based electrolyte, and rGO@Ni are sequentially stacked and assembled in a sandwich structure, with the plane of the electrode perpendicular to the interlayer interface of the cement-based electrolyte, to obtain the assembly. The assembly is then sealed and packaged using a vacuum heat sealer to obtain the structural energy storage body.

[0134] Example 4

[0135] The difference between this embodiment and Embodiment 3 is that, in step S2, during printing, conductive reinforcing ribs with a length of 30mm and a diameter of 1mm are embedded in the middle of each layer; the longitudinal direction of the conductive reinforcing ribs is consistent with the ion migration direction between the electrodes, and the interval is 20mm. The conductive reinforcing ribs are nickel-plated steel fibers.

[0136] Comparative Example 1

[0137] This comparative example provides a cast-in-place energy storage structure and its preparation method.

[0138] The cast-in-place energy storage structure comprises a magnesium cobalt layered double hydroxide / foamed nickel electrode (MgCo-LDHs@Ni), an activated carbon / foamed nickel electrode (AC@Ni), and a cast-in-place cement-based electrolyte. The cast-in-place cement-based electrolyte comprises the following components in parts by weight: cementitious material: 100 parts; polymer: 6 parts; water-reducing agent: 0.3 parts; thickener: 0.2 parts; accelerator: 2 parts; air-entraining agent: 0.01 parts; and water: 40 parts. Specifically, the cementitious material is ordinary Portland cement; the polymer is polyacrylamide (PAM); the water-reducing agent is polycarboxylate high-performance water-reducing agent with a solid content of 40%; the thickener is hydroxymethyl cellulose ether (HPMC); the accelerator comprises the following components in parts by weight: aluminate cement 50%, sodium carbonate 10%, aluminum sulfate 10%, sodium sulfate 15%, and quicklime 15%; and the air-entraining agent is hydrogen peroxide solution with a purity of 99%.

[0139] The preparation method of cast-in-place energy storage structure is as follows:

[0140] S1: Mix cement, polymer, water-reducing agent, air-entraining agent, quick-setting agent and water. First, stir at 140 r / min for 120 s, stop for 15 s, and then stir at 285 r / min for 120 s to prepare cement-based slurry.

[0141] S2: Pour the prepared cement-based slurry into a silicone mold with a length of 100cm, a width of 50mm, and a height of 100mm. Demold the mold one day later to obtain the casting.

[0142] S3: The cast body was transferred to a standard curing room for 28 days of curing. After curing, the cast body was then placed in a vacuum drying oven at 45°C to dry to constant weight. The dried cast body was then transferred to a vacuum water retention chamber with a vacuum degree of 2 kPa, and a 6 mol / L potassium hydroxide solution was introduced to allow it to fully penetrate into the pores of the cementitious material. After this treatment, the cast cement-based electrolyte was obtained.

[0143] S4: Add 30 μL / cm³ of the solution to the surfaces of the magnesium cobalt layered double hydroxide / nickel foam electrode (MgCo-LDHs@Ni) and the activated carbon / nickel foam electrode (AC@Ni), respectively. 2 A 6 mol / L potassium hydroxide solution, with electrode areas of 100 cm². 2 Then, MgCo-LDHs@Ni, cast cement-based electrolyte and AC@Ni are sequentially stacked and assembled in a sandwich structure, and the assembly is sealed and packaged using a vacuum heat sealer to obtain the cast structure energy storage body.

[0144] Compressive strength and porosity tests were conducted on the cement-based electrolyte samples (cut into 40mm×40mm×160mm pieces) prepared in Examples 1-4 and the cast cement-based electrolyte sample (cut into 40mm×40mm×160mm pieces) prepared in Comparative Example 1, in accordance with the national standard "Test Method for Strength of Cement Mortar (ISO Method)" (GB / T17671-2021). A universal testing machine was used for the compressive strength test; an AutoPore IV 9510 fully automatic mercury porosimeter was used for the porosity test, with mercury intrusion pressures ranging from 1.4 kPa to 414 MPa. The results of the compressive strength and porosity tests are shown in Table 1.

[0145] Table 1. Physical and electrochemical properties of cement-based electrolyte samples from Examples 1-4 and the cast cement-based electrolyte sample from Comparative Example 1.

[0146]

[0147] AC impedance testing was performed on the cement-based electrolytes prepared in Examples 1-3 and the cast cement-based electrolyte prepared in Comparative Example 1. The results are shown in the figure. Figure 2 .

[0148] The ionic conductivity of the cement-based electrolytes prepared in Examples 1-3 and the cast cement-based electrolyte prepared in Comparative Example 1 was tested, and the results are shown in the figure. Figure 3 See Table 1.

[0149] Cyclic voltammetry tests were performed on the structural energy storage device prepared in Example 1 above, and the results are shown below. Figure 4 .

[0150] The structural energy storage device prepared in Example 1 was subjected to constant current charge-discharge testing, and the results are shown below. Figure 5 .

[0151] The electrochemical testing instrument used for AC impedance testing, cyclic voltammetry testing, and constant current charge-discharge testing is Shanghai Chenhua CHI 660F. The testing environment conditions are room temperature (20±2)℃ and relative humidity (above 95%).

[0152] The cross-section of the cement-based electrolyte sample prepared in Example 1 was subjected to fluorescence impregnation and then photographed under a microscope. The resulting pore structure morphology is shown in the figure. Figure 6 As shown.

[0153] Example 5

[0154] like Figure 8As shown, this embodiment provides a self-powered street light, including: external power 1, wire 2, light pole 3, lighting facilities 4, wind turbine 5, tower 6, and transmission device 7; the wind turbine 5 is a key component for converting wind energy into mechanical energy, the tower 6 is an important supporting structure for the wind turbine generator set, and the transmission device 7 is a key device for transmitting the wind energy captured by the wind turbine 5 to the generator, so that it is converted into electrical energy.

[0155] The method for manufacturing a self-powered street light includes the following steps:

[0156] Based on the size requirements and energy storage capacity needs of the lamp post 3 (in this example, the lamp post 3 is 30cm high, 15cm in diameter, and requires 6 hours of energy storage), a three-dimensional model of the electrolyte layer and the electrode embedding positions were designed using model design software. A 3D printing path for the energy storage structure was generated using slicing software. The energy storage structure was prepared according to the method described in Example 3 (with adaptive adjustments to the external dimensions and electrode selection). According to Table 2, the positive electrode material was selected as a graphene / metal oxide composite electrode, and the negative electrode material as an activated carbon (AC) electrode, with an electrode area of ​​1250 cm². 2 The electrode loading is approximately 13 mg / cm². 2 The electrode spacing is approximately 30cm. Then, the structural energy storage body is installed into the lamp post 3, and the structural energy storage body is connected to the external power source 1 and the lighting facility 4 via the wire 2.

[0157] The working process of this embodiment is as follows: Through the transmission device 7, the mechanical energy of the wind turbine 5 is transmitted to the generator, which converts the mechanical energy into electrical energy, which is the external electrical energy 1. The external electrical energy 1 is transmitted to the lamp post 3 for storage through the wire 2. When night falls and the ambient light dims, the lamp post 3, which integrates a weather-resistant, long-life energy storage structure, discharges to the lighting facility 4, illuminating the surrounding environment.

[0158] Example 6

[0159] like Figure 9 As shown, this embodiment provides a self-powered street light, including: external power 1, wire 2, light pole 3, lighting facilities 4, and solar panel 8.

[0160] The method for manufacturing a self-powered street light includes the following steps:

[0161] Based on the size requirements and energy storage capacity needs of the lamp post 3 (in this example, the lamp post 3 is 30cm high, 15cm in diameter, and requires 6 hours of energy storage), a three-dimensional model of the electrolyte layer and the electrode embedding positions were designed using model design software. A 3D printing path for the energy storage structure was generated using slicing software. The energy storage structure was prepared according to the method described in Example 4 (with adaptive adjustments to the external dimensions and electrode selection). According to Table 2, the positive electrode material was selected as a graphene / metal oxide composite electrode, and the negative electrode material as an activated carbon (AC) electrode. The electrode area was 1250 cm². 2 The electrode loading is approximately 13 mg / cm². 2 The electrode spacing is approximately 30cm. Then, the structural energy storage body is installed into the lamp post 3, and the structural energy storage body is connected to the external power source 1 and the lighting facility 4 via the wire 2.

[0162] The working process of this embodiment is as follows: Solar energy is converted into electrical energy through solar panel 8, and this electrical energy is called external electrical energy 1. External electrical energy 1 is transmitted to the lamp post 3 for storage through wire 2. When night falls and the ambient light dims, the lamp post 3, which integrates a weather-resistant, long-life energy storage structure, discharges to the lighting facility 4, illuminating the surrounding environment.

[0163] Table 2 Parameter Compatibility Table for Different Electrode Materials

[0164]

[0165] The technical features in the claims and / or specification of this application can be combined, and the combination is not limited to the combinations obtained through reference in the claims. Technical solutions obtained by combining the technical features in the claims and / or specification are also within the scope of protection of this application.

[0166] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A self-powered street light, characterized in that, It includes: Lamp poles, wires, and lighting fixtures; The light pole includes a structural energy storage body, which provides structural support for the light pole. The energy storage structure is connected to external electrical energy and the lighting facilities via the wires; The method for preparing the structured energy storage body includes the following steps: S1: Preparation of cement-based printing paste; S2: The cement-based printing paste is loaded into a 3D printing device and deposited layer by layer to form a printed body; S3: After curing, trimming, and drying the printed body, immerse it in a soluble alkali / salt solution to obtain a cement-based electrolyte; S4: A soluble alkali / salt solution is dropped onto the electrode surface, and then the electrode is stacked and assembled with the cement-based electrolyte to obtain an assembly; the assembly is sealed and packaged to obtain the structural energy storage body; The cement-based electrolyte has a oriented pore structure at the printing interlayer interface, with a pore size of 0.5–20 μm and a porosity of 10%–50%; the pore orientation of the pore structure is consistent with the ion migration direction between the electrodes.

2. The self-powered street light according to claim 1, characterized in that, The light pole also includes a reinforcing protective layer, which wraps around the outside of the energy storage structure; the reinforcing protective layer is made of fiber-reinforced cement-based material.

3. The self-powered street light according to claim 1, characterized in that, The energy storage structure has pre-embedded conductive reinforcing ribs. The longitudinal direction of the conductive reinforcing rib is consistent with the ion migration direction between the electrodes.

4. The self-powered street light according to claim 3, characterized in that, The conductive reinforcing ribs are nickel-plated steel fibers or carbon fiber bundles.

5. The self-powered street light according to claim 1, characterized in that, The external electrical energy comes from at least one of solar cells and wind power generation devices.

6. The self-powered street light according to claim 1, characterized in that, The cement-based printing paste comprises the following components in parts by weight: Cementitious material: 80-120 parts; Polymer: 2-25 parts; Water-reducing agent: 0.1–2 parts; Accelerator: 0.5–10 parts; Air-entraining agent: 0.002–0.1 parts; Water: 28–65 parts.

7. A method for manufacturing a self-powered street light, characterized in that, The steps include: Q1: Based on the size requirements of the light pole and the energy storage capacity requirements, use model design software to design the three-dimensional model of the electrolyte layer and the electrode embedding position, and use slicing software to generate the 3D printing path of the energy storage structure. Q2: Prepare cement-based printing slurry; load the cement-based printing slurry into a 3D printing device, and print layer by layer according to the 3D printing path to form a printed body; cure and maintain the printed body, trim and dry it, and then immerse it in a soluble alkali / salt solution to obtain a cement-based electrolyte; drop the soluble alkali / salt solution onto the electrode surface, and then stack and assemble the electrode and the cement-based electrolyte to obtain an assembly; seal and package the assembly to obtain the structural energy storage body; The cement-based electrolyte has a oriented pore structure at the printing interlayer interface, with a pore size of 0.5–20 μm and a porosity of 10%–50%; the pore orientation of the pore structure is consistent with the ion migration direction between the electrodes. Q3: Install the energy storage structure into the light pole, and connect the energy storage structure to external power and lighting facilities through wires.

8. The preparation method according to claim 7, characterized in that, In step Q2, conductive reinforcing ribs are pre-embedded during printing; The longitudinal direction of the conductive reinforcing rib is consistent with the ion migration direction between the electrodes.

9. The preparation method according to claim 8, characterized in that, The conductive reinforcing ribs are nickel-plated steel fibers or carbon fiber bundles.

10. A road lighting system, characterized in that, Includes the self-powered street light as described in any one of claims 1-6.

Images