Solar energy belongs to renewable and clean energy, which is inexhaustible and inexhaustible, and is an inevitable trend for future energy utilization. With the widespread application of clean energy solar energy and the gradual maturity of energy storage technology, the advantages of solar street lights in road lighting and rural lighting are gradually becoming apparent, and replacing cable connected city circuit lights has become a trend. This article first introduces the components of solar street lights, then elaborates on the working principle and advantages of solar street lights, and finally introduces the application fields and principles of solar street lights.
Components are generally divided into two parts: single crystal and polycrystalline. Of course, single crystal and polycrystalline are also divided into A-side and B-side. Therefore, this is why the price difference of components with the same configuration in the market is so much, and it is difficult for ordinary people to see anything from the appearance alone. The function of the component is to convert solar energy into electrical energy that can be stored in a battery. Currently, the highest conversion rate for single crystals is 17%, while for polycrystals it is around 12%.
- Solar specialized batteries
As a function of storing and releasing electrical energy, batteries can be installed on lamp poles or buried underground. The function of the battery box is to serve as a protective function for the battery underground. The battery will not be corroded by groundwater. The working principle of the battery is to store the electrical energy converted from solar photovoltaic modules in the body during the day, and discharge at night when the controller commands to the time. The product quality and corresponding price of manufacturers with different technical capabilities are vastly different.
- Solar controller
The backbone and big heart of the streetlight system, for example, the human heart is good, and if there are no problems, people can operate normally. If there are problems with the heart or other parts of the body, no matter how good it is, it will not be useful. The quality of the controller directly affects the lifespan of the solar street light system. It is best to choose a certain brand, such as Nanjing Putian, Shenzhen Shuori Light, and so on.
- LED light source
Nowadays, the better ones on the market generally use flat LED lamp holders with optional light sources, mainly in these two accessories. The traditional LED lamp holder has a larger shell, which results in poorer heat dissipation performance. The flat LED lamp holder looks more high-end, with built-in heat dissipation. There are domestic and imported light sources, and due to domestic technology, they are generally mainly imported. The imported ones are Pru and Kerui, and Pru also has 33 and 45 types. The prices of LED light sources vary depending on the selected materials
- Solar street light poles
solar light for pathway - solar light for pathway
The lamp pole section is customized based on the customer’s initial design requirements for pole type and configuration parameters. Different size and style requirements result in significant price differences.
The working principle of solar street lights is to convert solar energy into electrical energy for illumination. The top of the street light is a solar panel, also known as a photovoltaic module. During the day, these polycrystalline silicon photovoltaic modules convert solar energy into electrical energy and store it in a battery. Under the control of an intelligent controller, the solar street light is illuminated by the solar panel, which absorbs solar energy and converts it into electrical energy. During the day, the solar cell module charges the battery pack. In the evening, electrical energy is transmitted to the light source through the control of the controller, providing illumination for people at night. At night, the battery pack provides power to the LED light source, achieving lighting functions.
Solar street lights generate electricity through solar energy, so there are no cables and there will be no leakage or other accidents. The DC controller can ensure that the battery pack is not damaged due to overcharging or discharging, and has functions such as light control, time control, temperature compensation, lightning protection, and reverse polarity protection. No cables need to be laid, no AC power supply is required, and no electricity bills are incurred.
The advantages of solar street lights, such as low-carbon environmental protection, safety and reliability, have been recognized by a large number of customers and have been vigorously promoted. Therefore, it can be widely used in urban main and secondary roads, residential areas, factories, tourist attractions, parking lots and other places.
- Wide Energy Range
Solar street lights use solar photovoltaic cells to provide electricity, and solar energy, as a green and environmentally friendly new energy source, is inexhaustible and inexhaustible. Fully utilizing solar energy resources has positive significance in alleviating the shortage of conventional energy.
- Easy and convenient installation
The installation of solar street lights is simple and convenient, without the need for a large amount of basic engineering such as laying cables like ordinary street lights. It only requires a base to be fixed, and all circuits and control parts are placed in the lamp frame to form a whole.
- Low maintenance costs
The solar powered street lights use solar power, and the operating cost is almost zero, except for a small portion of electricity costs incurred when converted to mains power on cloudy and rainy days. The entire system operates under automatic control, without the need for human intervention, and incurs almost no maintenance costs.
- Installation comparison
When installing, there is no need to install complex circuits, just make a cement base and a battery pit within 1m, and fix it with galvanized bolts.
There are complex operating procedures in the construction of municipal circuit lights. Firstly, it is necessary to install auxiliary cables, excavate trenches, lay pipes, thread wires inside pipes, backfill and other large-scale civil engineering construction, which consumes a lot of manpower, material resources, and financial resources. Finally, debugging is necessary, as any issues that arise can cause significant consumption.
- Cost comparison
Solar street lights can benefit from a one-time investment and long-term benefits. Due to their simple wiring, they do not incur maintenance costs or expensive electricity bills. Recovering costs within 6-7 years, saving over 1 million yuan in electricity and maintenance costs over the next 3-4 years.
The electricity cost of city circuit lights is high, and the circuit is complex, requiring long-term uninterrupted maintenance of the circuit. In the case of unstable voltage, sodium lamps are inevitably prone to damage, and with the extension of service life, the aging of the circuit and maintenance costs increase year by year.
- Security comparison
Solar street lights are ideal products for ecological communities and road administration departments due to their use of 12-24V low voltage, stable voltage, reliable operation, and no safety hazards.
The safety hazards of urban circuit lights are significant, and people’s living environment is constantly changing. Road renovation, landscape engineering construction, abnormal power supply, and cross construction of water and gas pipelines have brought many hidden dangers.
- Environmental comparison
Solar street lights can add new selling points for the development and promotion of noble ecological communities; Sustainable reduction of property management costs and reduction of shared expenses among property owners. In summary, the inherent characteristics of solar lighting, such as safety and no hidden dangers, energy conservation and no consumption, green and environmentally friendly, easy installation, and automatic control and maintenance free, will directly bring significant advantages for the sales of real estate projects and the construction of municipal engineering.
- Lifetime comparison
The lifespan of solar powered lighting fixtures is much higher than that of ordinary electric lighting fixtures, such as the main component of solar powered lighting fixtures – the solar cell module, which has a lifespan of 25 years; The average lifespan of low-pressure sodium lamps is 18000 hours; The average lifespan of low-voltage and high-efficiency three primary color energy-saving lamps is 6000 hours; The average lifespan of ultra high brightness LEDs is more than 50000 hours; The lifespan of solar dedicated batteries is 2-5 years below 38AH; 3-7 years from 38-150AH. According to the regulations of the local price bureau, which charge a one-time street light maintenance fee of 6 yuan/square meter based on the pure residential building area, the initial investment of ordinary lighting fixtures is much higher than that of solar lighting fixtures. In summary, the investment saving characteristics of solar powered lighting fixtures are quite obvious when compared comprehensively.
1) Roads in rural, township and other peripheral areas are connected to lighting.
2) City squares, parking lots, school playgrounds, worker green spaces, and park lighting.
3) Lighting for golf courses, seaside baths, upscale villa areas, etc.
4) Highway warning signs, bridge street light power supply replacements, and so on.
- Principle of practicality
The main purpose of applying solar street lights in urban lighting systems is to save energy, but due to the significant impact of weather factors, solar street lights may not fully meet lighting needs in cloudy and high power demanding areas. Based on this, in the process of application design, it is necessary to combine the design effect of the original street light system, increase solar power supply, achieve complementarity between urban power supply and solar power supply, ensure timely switching to urban power supply in case of insufficient solar power supply, and improve the application efficiency of the entire lighting system.
- Efficiency principle
When designing applications, it is necessary to meet the functional requirements of the lighting system and improve its application efficiency through reasonable design, while reducing system energy consumption and pollution. To achieve the goals of energy conservation and environmental protection. In addition, for the application design of solar street lights. To ensure its high application efficiency after being put into use, it is also necessary to analyze the local geographical and meteorological factors of the project, conduct a detailed investigation and analysis of the actual conditions such as sunshine time, foggy weather, and rainy weather, and adjust the design plan at any time based on the actual situation, striving to meet the needs of the lighting system to the greatest extent possible.
- Principles of Traffic Safety
The main purpose of constructing urban road lighting systems is to ensure traffic safety and improve transportation efficiency on this basis, providing a safe and comfortable environment for traffic operation. Therefore, in the construction and application of solar street lights, it is necessary to follow the principle of traffic safety. Reasonably design based on the actual transportation needs of local road sections. Ensure that all aspects of the design meet the usage requirements.
