30 seconds to understand the working principle and advantages of solar street lights

Solar energy is a renewable and clean energy source, which is inexhaustible and inexhaustible. It is an inevitable trend of future energy utilization. With the wide application of clean energy solar energy and the maturity of energy storage technology, the advantages of solar street lamps in road lighting and rural lighting have gradually emerged, and the replacement of the city's circuit lights through the cable has become a trend. This paper first introduces the components of solar street lamps, and then explains the working principle and advantages of solar street lamps. Finally, it introduces the application fields and application principles of solar street lamps.

1. Solar photovoltaic modules

The components are generally divided into two parts, single crystal and polycrystalline. Of course, single crystal polycrystals are also divided into A side and B side, so this is why the price of the same components in the market is so much different. What came out. The function of the component is to convert solar energy into electrical energy that can be stored in the battery. The current conversion rate of the single crystal is up to 17%, and the polycrystal is about 12%.

2, solar battery

As a function of storing and releasing electric energy, the battery can be installed on the light pole or buried in the ground. The function of the battery box is to protect the battery in the ground. The battery will not be corroded by groundwater. The working principle of the battery is to use solar energy during the day. The electrical energy converted by the PV modules is stored in the body. At the end of the night, when the controller commands the time to start discharging, the quality of the products of different technical capabilities is as different as the corresponding price.

3, solar controller

The main heart of the street lamp system, the big heart, the image of the analogy, the human heart is good, the problem can be normal and normal operation, if the heart has problems or exhausted other body parts, no matter how good. The quality of the controller directly affects the life of the solar street light system. It is best to use certain brands, such as Nanjing Putian, Shenzhen Shuoyuan Lantern, etc.

4, led light source

Nowadays, the market is generally better to use the flat lamp head, the light source is optional, mainly on these two accessories, the traditional change of the led lamp housing is large, the heat dissipation performance is a little worse, the flat lamp head is flat, looks high-grade, The built-in heat dissipation of the lamp head, the domestic and imported parts of the light source, the domestic technology, the general reason is mainly imported, the import is better, there are Puri, Corey, Puri also has 33 and 45 points, different The price of the selected materials is also different.

5, solar street light pole

The pole section is customized to the requirements of the pole shape and configuration parameters at the beginning of the customer's design. Dimensions and style requirements are different, and the price difference is large.

The working principle of solar street lamps is to convert solar energy into electric energy to realize illumination. The top of the street lamp is solar panel, also known as photovoltaic module. During the day, the photovoltaic components made of polysilicon convert solar energy into electric energy and store it in the battery, so that the solar street lamp is intelligently controlled. Under the control of the device, the solar panel is irradiated by sunlight, absorbs solar light and is converted into electric energy, and the solar cell module charges the battery pack during the day. In the evening, power is supplied to the light source through the control of the controller to illuminate people at night. At night, the battery pack provides power to supply power to the LED light source to achieve lighting functions.

Solar streetlights use solar energy to generate electricity, so there are no cables and no leakage or other accidents. The DC controller ensures that the battery pack is not damaged by overcharging or overdischarging, and has functions such as light control, time control, temperature compensation, lightning protection, and reverse polarity protection. No need to lay cables, no AC power supply, no electricity bills.

The low-carbon, environmentally-friendly, safe and reliable advantages of solar street lamps have been recognized by customers and have been greatly promoted. Therefore, it can be widely used in urban main and secondary roads, communities, factories, tourist attractions, parking lots and other places.

1. Wide energy

Solar street lamps use solar photovoltaic cells to provide electricity. Solar energy, as a new energy source for environmental protection, is “inexhaustible and inexhaustible”. Making full use of solar energy resources is of positive significance in alleviating the situation of conventional energy shortages.

2, the installation is simple and convenient

The installation of solar street lamps is simple and convenient. It does not need to do a lot of basic engineering such as laying cables like ordinary street lamps. Only one base is required to be fixed, and all the lines and control parts are placed in the lamp holder to form a whole.

3, low maintenance costs

The solar power supply used by solar street lamps, except for the conversion of rainy days into commercial power supply, will generate a small portion of the electricity cost, and the operating cost is almost zero. The entire system is automatically controlled and requires no human intervention, resulting in virtually no maintenance costs.

1, installation comparison

When installing, do not need to set up complex lines, only make a cement base and make a battery pit within 1m, and fix it with galvanized bolts.

There are complicated operating procedures in the construction of circuit lights in the city. First of all, it is necessary to provide a large number of civil constructions such as cables, trenching pipes, pipe threading, backfilling, etc., which consumes a lot of manpower, material resources and financial resources. Finally, debugging is required, and if there is a problem, it is very expensive.

2, cost comparison

Solar street lamps are invested once and benefited for a long time. Because the lines are simple, no maintenance costs are incurred and no expensive electricity costs are incurred. The cost will be recovered in 6-7 years, and the electricity and maintenance costs will be saved by more than 1 million in the next 3-4 years.

The city's circuit lights have high electricity costs and complicated lines, and it is necessary to maintain the lines for a long time without interruption. In the case of special voltage instability, the sodium lamp is easy to be damaged, and as the age increases, the line aging and maintenance costs are increasing year by year.

3, security comparison

Due to the low voltage of 12-24V, the solar street lamp has stable voltage, reliable operation and no hidden dangers. It is an ideal product for the ecological community and the road administration department.

The safety of circuit lights in the city is great. People's living environment is changing constantly. Road reconstruction, landscape engineering construction, power supply is not normal, and cross-construction of water gas pipelines brings many hidden dangers.

4, 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 the cost of the public share of the owners. In summary, the inherent characteristics of solar lighting safety without hidden dangers, energy saving without consumption, green environmental protection, easy installation, automatic control and maintenance-free will directly bring obvious advantages for the sale of real estate and the construction of municipal engineering.

5, life comparison

The life of solar lamps is much higher than that of ordinary electric lamps. For example, the main components of solar lamps---the life of solar modules is 25 years; the average life of low-pressure sodium lamps is 18,000 hours; the average of low-voltage and high-efficiency trichromatic energy-saving lamps The life expectancy is 6000 hours; the average life of super bright LED is more than 50,000 hours; the life of solar special battery is 2-5 years below 38AH; 3-7 years of 38-150AH. According to the regulations of the local community according to the local price bureau, “one-time residential street lamp maintenance fee of 6 yuan/m2 according to the pure residential building area”, the initial investment of ordinary lamps is much higher than the initial investment of solar lamps. In short, the comprehensive comparison of the characteristics of solar lamps to save investment is quite obvious.

1) Roads in rural areas, townships and other fringe areas are illuminated.

2) City squares, parking lots, school playgrounds, workers' green spaces, and park lighting.

3) Lighting such as golf courses, beaches, and high-end villas.

4) Highway warning signs, bridge street light power replacement, etc.

1. Principle of practicality

The main purpose of solar streetlights in urban lighting systems is to save energy, but because it is affected by weather factors, solar street lights may not fully meet the lighting needs for cloudy and power-demanding areas. Based on this, when designing the application, it is necessary to combine the design effect of the original street lamp system, increase the solar power supply, and realize the complementarity between the mains power supply and the solar power supply, so as to ensure that the power supply can be switched to the mains supply in case of insufficient solar power supply, and the whole is improved. The efficiency of the application of the lighting system.

2, the principle of efficiency

In the application design, it is necessary to improve the application efficiency through reasonable design on the basis of meeting the various functional requirements of the lighting system, and reduce the pollution while reducing the system energy consumption. To achieve energy saving and environmental protection purposes. In addition, for the application design of solar street lights. In order to ensure that it has high application efficiency after being put into use, it should also analyze the local geographical factors and meteorological factors of the project, and conduct detailed investigation and analysis on the actual conditions such as sunshine time, fog hoop weather and rainy weather. The actual situation can be adjusted at any time to strive to meet the needs of the lighting system to the greatest extent.

3. Traffic safety principles

The main purpose of urban road lighting system construction is to ensure traffic safety, and on this basis, improve transportation efficiency and provide a safe and comfortable environment for traffic operation. Therefore, in the construction and application of solar street lamps, the principle of traffic safety must be followed. Reasonable design is carried out in combination with the actual needs of transportation on local road sections. Ensure that all aspects of the design meet the requirements of use.

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