Solar street light is a facility that uses solar energy to generate electricity and achieve lighting. Its working principle is mainly divided into two steps, that is, daytime photoelectric conversion and night lighting. During the day, solar panels receive sunlight and convert it into electricity, which is stored in a battery pack. When night falls, the internal controller of the solar street lamp senses changes in the environment, automatically turns on the lighting mode, outputs the electric energy stored by the battery pack to the lamp through the controller, and the LED lamp begins to work for lighting. Compared with traditional street lights, solar street lights are more convenient in installation and use, but also more environmentally friendly and energy-saving.
一、Solar Power Generation Principle
Solar energy refers to the energy radiated by the sun, which contains rich light energy and heat energy. This energy can be converted into electricity by solar panels (also called solar panels). Solar panels are usually composed of multiple solar cells, each of which is made up of two layers of different materials. When sunlight strikes a solar cell, electrons jump out of one layer of material and are attracted to another, creating an electric current. This converts sunlight into electricity.
During the day, under the control of the intelligent controller, the solar panels are illuminated by the sun, absorbing the solar light and converting it into electricity, the solar cell modules charge the battery during the day, and the battery provides power to the LED light source at night to achieve the lighting function. The DC controller can ensure that the battery pack is not damaged due to overcharge or over discharge, and has the functions of light control, time control, temperature compensation, lightning protection, reverse polarity protection, etc.
二、Composition Of Solar Street Lights
Solar street lights are powered by crystal silicon solar cells, maintenance-free valve-controlled sealed battery (colloidal battery) to store electrical energy, ultra-bright LED lamps as a light source, and controlled by intelligent charge and discharge controller, used to replace traditional public power lighting street lights. No need to lay cables, no AC power supply, no electricity costs; Dc power supply, control; It has the advantages of good stability, long life, high luminous efficiency, easy installation and maintenance, high safety performance, energy saving and environmental protection, economic and practical. It can be widely used in urban main and secondary roads, residential areas, factories, tourist attractions, parking lots and other places.
Solar street lights are composed of the following parts:
- Solar panels: It is the core component that converts solar energy into electricity.
- Battery pack: Solar street lights need to store the electricity converted from solar energy for use at night.
- Controller: The controller can adjust the battery charging and discharging, and is also responsible for controlling the switch and brightness of the lamp.
- Lamps: Lamps are the lighting equipment of solar street lamps.
- Bracket: Bracket is the support structure for installing devices such as solar panels, battery packs and controllers.
Solar modules generally choose mono crystalline silicon or poly crystalline silicon solar modules; LED lamp holder generally uses high-power LED light source; The controller is generally placed in the lamp pole, with light control, time control, overcharge and over discharge protection and reverse protection, more advanced controller has the function of four seasons adjustment of lighting time, half power function, intelligent charge and discharge function; Batteries are generally placed underground or there will be a special battery incubator, which can use valve-controlled lead-acid batteries, colloidal batteries, iron and aluminum batteries or lithium batteries. Solar lamps work automatically, do not need to dig trenches and wiring, but the light pole needs to be installed on the embedded part (concrete base).
三、 Advantages Of Solar Street Lights
- Environmental protection and energy saving: solar street lights use solar power generation and LED lights, which not only reduces the consumption of fossil energy, but also effectively reduces carbon dioxide emissions.
- Low maintenance cost: the structure of solar street lights is simple, and the maintenance cost is very low. The LED lights it uses have a long life and are not easily damaged, so repair and replacement costs can be reduced.
- Easy installation: solar street lights do not need to arrange wires, nor do they need other additional equipment, as long as there is sunlight and installation location, which greatly reduces the difficulty and cost of installation.
- Good lighting effect: solar street lights use LED lights as a light source, this lamp has high brightness, good light efficiency, long life, can effectively improve the lighting effect, but also reduce the consumption of electricity.
- Strong reliability: the internal controller of the solar street lamp has an intelligent control function, which can automatically adjust the power of the battery pack, achieve automatic switching of the light and brightness adjustment, etc., and its working stability and reliability are high, and can adapt to various weather conditions.
四、 Difference Between Solar Street Lights And Traditional Street Lights
- Energy source: The energy of solar street lights comes from sunlight, while traditional street lights need to be powered by the power network, which consumes a lot of fossil energy.
- Energy consumption and energy saving: solar street lights, due to the uniqueness of their energy sources, do not need to consume fossil energy, so there is no carbon dioxide and other greenhouse gas emissions, friendly to the environment. Traditional street lights require a large amount of power supply, with the development of the city, the night lighting demand is growing, the consumption of energy is becoming more and more significant.
- Installation and maintenance: The installation of solar street lights is relatively simple, only need to install solar panels and LED lamps on both sides of the road. Traditional street lights require laying cables and other facilities, which is complex and costly to install. In addition, the operation and maintenance costs of solar street lights are also lower because they do not have moving parts such as engines, so they have less wear and a longer life.
In short, solar street light is a very good lighting facilities, it not only has the characteristics of environmental protection and energy saving, and the installation and use are very convenient, and in terms of lighting effect and reliability are performing quite well, the future it will also become an important part of the urban lighting system. If you are interested in solar street lights, please contact the street pole wholesaler Hepu for more information.
