System principle, system working principle is simple, using the photovoltaic effect principle of solar cells, solar panels during the day to receive solar radiation and translated into electricity output, after stored in the storage battery charging and discharging controller, the night when the illumination was gradually reduced to about 10 lux, solar panels around the open circuit voltage of 4.5 V, charge and discharge controller detects the voltage value of the action, the battery to discharge lamp holder. 8 hours after the battery discharge, charge and discharge controller action, battery discharge end. The main function of charge and discharge controller is to protect the battery.
Solar power generation system:
In the daytime, the solar cell module generates a certain electromotive force under the light condition, and forms the solar cell square array through the serial and parallel connection of the modules, so that the square array voltage can meet the requirements of the system input voltage. Then charge the battery through charge and discharge controller to store the electric energy converted from the light energy. In the evening, the battery group provides input electricity for the inverter. Through the function of the inverter, the direct current is converted into alternating current and transferred to the power distribution cabinet, where the switching function of the power supply is carried out. The discharge of the battery is controlled by the controller to ensure the normal use of the battery. Photovoltaic power station system should also be limited load protection and lightning protection device, to protect the system equipment under load operation and from lightning strike, to maintain the safe use of system equipment.
Advantages of solar street lamp: yijia photoelectric
1. Solar street lamp USES solar photovoltaic cells to provide electric energy. As a kind of green and environment-friendly new energy, solar energy is "inexhaustible". Making full use of solar energy resources is of positive significance to relieve the shortage of conventional energy.
2. The installation of solar street lamp is simple and convenient, and there is no need to lay cable and a large number of foundation projects like ordinary street lamp. All the circuits and control parts are placed in the lamp bracket to form an integral whole.
3. The operation and maintenance cost of solar street lamps is low. The solar power used by solar street lamps is almost zero, except for a small part of the electricity cost caused by the conversion from cloudy and rainy days to municipal power supply. The whole system operation is automatic control, no human intervention, almost no maintenance costs.