System principle: The working principle of the system is simple. Solar cells made of photovoltaic effect principle are used to receive solar radiation energy by solar panels during the day and converted into electric energy output, which is stored in the battery through charge and discharge controller. At night, when the illumination gradually decreases to about 10lux, the open-circuit voltage of solar panels is about 4.5V. After the charge and discharge controller detects this voltage value, the battery discharges the lamp head. After 8 hours of battery discharge, the charge and discharge controller will act and the battery discharge ends. The main function of charge and discharge controller is to protect the battery.

Solar power system:

Working principle:

During the day, under the illumination condition, solar cell components generate certain electromotive force, and the solar cell array is formed through the series and parallel connection of the components, so that the voltage of the array reaches the requirements of the input voltage of the system. Then the battery is charged by the charge and discharge controller, and the electric energy converted from light energy is stored. At night, the battery bank provides input electricity for the inverter. Through the function of the inverter, the DC is converted into AC, which is transmitted to the power distribution cabinet, and the power is supplied by the switching function of the power distribution cabinet. The discharge of the battery is controlled by the controller to ensure the normal operation of the battery. The photovoltaic power station system should also be equipped with limited load protection and lightning protection devices to protect the system equipment from over-load operation and lightning strike, and maintain the safe use of system equipment.