Brief introduction of the solar street lamp
Solar street lamps are powered by crystalline silicon solar cells, stored by batteries (gel batteries, sealed lead acid batteries, gel batteries, lithium iron phosphate batteries), and super bright LED lamps as light sources, controlled by intelligent charge discharge controllers, used to replace traditional public power lighting street lamps.
Solar street lamp composition
1. LED street lamp (including light source)
2. Solar panel
3. Battery
4. Solar street lamp controller
5. Street lamp pole (including foundation and solar panel support)
6. Components of auxiliary materials, wires, etc
Monocrystalline silicon or polycrystalline silicon solar cell modules are generally selected as solar cell modules; High power LED light source is generally selected for LED lamp head; The controller is generally placed in the lamp pole, with light control, time control, overcharge and overdischarge protection and reverse connection protection. The more advanced controller has the function of adjusting the lighting time in four seasons, half power function, intelligent charging and discharging function, etc;
The storage battery is generally placed underground or there will be a special storage battery incubator. Valve regulated lead acid battery, gel battery, iron aluminum battery or lithium battery can be used. The solar lamp works automatically, without trenching and wiring, but the lamp pole needs to be installed on the embedded parts (concrete base).
System principle of solar street lamp
The solar panel made by using the principle of photovoltaic effect receives solar radiation energy in the daytime and converts it into electrical energy output, which is stored in the battery through the charge and discharge controller.
At night, when the open circuit voltage of the solar panel is lower than the fixed value, the charge and discharge controller detects this electrical voltage and acts, and the battery discharges the lamp head.
After the battery is discharged to the set time, or the controller detects that the day is coming, the controller acts. When the battery is discharged, the controller waits for the day to light or performs charging.
Advantages of solar energy over traditional street lamps
1. Installation comparison
During the installation of solar street lamps, it is not necessary to set complex lines, but only to make a cement base, which can be fixed with galvanized bolts.
There are complex operation procedures in the construction of municipal circuit lights. First of all, a large number of civil works, such as auxiliary cables, trenching and pipe laying, threading in pipes, backfilling, etc., consume a lot of manpower, material resources and financial resources. Finally, we need to debug. Once a problem occurs, it will cause a lot of consumption.
2. Cost comparison
Solar street lamps will benefit from one-time investment and long-term benefits. Because the lines are simple, there will be no maintenance costs and no expensive electricity charges. Cost recovery in 6-7 years.
The electricity cost of city circuit lights is high, and the lines are complex, which requires long-term uninterrupted maintenance. Especially when the voltage is unstable, it is inevitable that the sodium lamp is easy to break. With the extension of the service life, the line aging and maintenance costs are increasing year by year.
3. Security comparison
The solar street lamp adopts 12-24V low-voltage, stable voltage, reliable operation and no potential safety hazard.
There are many hidden dangers in the safety of municipal circuit lights. Under the changing circumstances of people’s living environment, road reconstruction, landscape engineering construction, abnormal power supply, cross construction of water and gas pipelines and other aspects have brought many hidden dangers.
4. Life comparison
The service life of solar lamps is much longer than that of ordinary electric lamps, for example, the service life of the main components of solar lamps – solar cell modules is 25 years; The average service life of low pressure sodium lamp is 18000 hours;
The average service life of low voltage high efficiency tri color energy-saving lamp is 6000 hours; The average life of super bright LED is more than 100000 hours; The theoretical life of lithium iron phosphate battery for solar energy will reach 7~8 years.
To sum up, the solar street lamp has the characteristics of wide application, safety, energy saving and consumption free, green and environmental protection, simple installation, automatic control and maintenance free, which is a one-time investment and long-term use.
