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What is a solar light and what is its working principle?

Update:24 Aug 2020
Summary:Solar lights are electric lights that are converted into ele...

Solar lights are electric lights that are converted into electrical energy by solar panels. In the daytime, even in cloudy days, this solar generator (solar panel) can also collect and store solar energy. As a new safe and environmentally friendly electric light, solar light has attracted more and more attention.
The solar light is composed of solar cell components, some LED lamps, a control box (with charger, controller, and storage battery in the control box) and a light pole. The luminous efficiency of the solar panel reaches 127Wp/m2, and the efficiency is high, which is very beneficial to the wind-resistant design of the system; the lamp holder part is integrated with 1W white light LED and 1W yellow light LED on the printed circuit board and arranged in a dot matrix with a certain interval as a plane emitting light source. The control box body is made of stainless steel, which is beautiful and durable; the control box is equipped with a maintenance-free lead-acid battery and a special charge controller for solar street lights that has been successfully developed using patented slow pulse fast charge and discharge technology. The system uses valve-controlled sealed lead-acid batteries, which are also called "maintenance-free batteries" because they are rarely maintained, which helps reduce system maintenance costs; the charge and discharge controller is designed with full functions (with light control, Time control, overcharge protection, overdischarge protection and reverse connection protection, etc.) and cost control to achieve a high cost performance.
The working principle of the solar lamp is simple. The solar cell is made by using the principle of photovoltaic effect. During the day, the solar cell panel receives solar radiation energy and converts it into electrical energy output, which is stored in the battery through the charge and discharge controller. At night, when the illumination is gradually reduced to about 101ux, The open circuit voltage of the solar panel is about 4.5V, the charge and discharge controller will act after detecting this voltage value, and the battery will discharge the lamp cap. After the battery is discharged for 8.5 hours, the charging and discharging control action is performed, and the battery discharge ends. The main function of the charge and discharge controller is to protect the battery.

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