2022-03-07
So when it comes to why solar street lights are so energy-saving, we have to talk about the working principle of solar street lights: during the day, under light conditions, the solar cell components generate a certain electromotive force, and the solar cell square array is formed through the series and parallel connection of the components, so that the square array voltage meet the system input voltage requirements. Then, the battery is charged by the charge and discharge controller, and the electric energy converted from the light energy is stored. At night, the battery pack provides the input power for the inverter, and through the function of the inverter, the DC power is converted into AC power, which is sent to the power distribution cabinet, and the power is supplied by the switching function of the power distribution cabinet. The discharge of the battery pack is controlled by the controller to ensure the normal use of the battery. The photovoltaic power station system should also have limited load protection and lightning protection devices to protect the system equipment from overload operation and avoid lightning strikes, and maintain the safe use of system equipment.