SKD for Solar Street Lights; What is Solar Street Light Parts?

Solar street lights are outdoor lighting products that we can see everywhere in our daily life. Some people regard it as a simple lamp. When they come to purchase the solar street light, they find it hard to choose. Because they don’t know clearly about this street lighting system.

What is the composition of the solar street lights? Solar street light composed of solar panel, controller, battery, light source,etc. When there is sunlight, the solar panel will absorb the solarlight and transfer the solar energy into electricity. The electricity will be stored in the rechargeable battery. In the night, when the sun is gone, the electricity stored in the battery will power the street light to provide illumination. This is especially convenient for off-grid areas. Let’s go through the details of these components.

The input energy of the solar photovoltaic power generation system is extremely unstable, it is generally necessary to configure battery street lights to work. The main function of the battery is to store and release electrical energy. During the day, the electric energy converted by the solar photovoltaic module is stored, and at night, it is discharged under the command of the controller. Commonly used solar street lamp batteries include lead-acid batteries, gel batteries and lithium batteries. High-performance batteries should have the following advantages: enough cycles of charge and discharge, low self-discharge rate, long service life, strong deep discharge capability, and high charging efficiency. Usually installed on a light pole or buried in the ground, the function of the battery box is to protect the battery in the ground, and the battery will not be corroded by groundwater. Lithium batteries are now the first choice of most solar street light manufacturers, with long lifespan and no pollution.

The solar street light controller is an indispensable part of the solar street light system. It is the control core of the solar street light. It connects lamps, batteries, and solar panels in series to make the entire system work normally. The controller has four main functions, the first one is to limit the voltage of the input battery. The second function is to increase the voltage when there is no voltage output, so that the battery can reach a level that can light up. The third function is to control the output period, and the solar street light will turn on at the set time. The fourth function is to adjust the output power, such as adjusting the power of the street light to 20W in the early morning and 100W in the evening. The choice of solar street light controller mainly considers three points: the power of the battery panel, the voltage of the system, the type and power of the lamp. You must clarify these three points before you can choose a suitable controller.