What are the components of a solar lamp
Solar controllerRegardless of the size of solar lamps, a good performance charge discharge controller is essential. In order to prolong the service life of the battery, it is necessary to limit the charging and discharging conditions, to prevent the battery from overcharging and deep charging. Where the temperature difference is larger, the qualified controller should also have the function of temperature compensation. At the same time, the solar controller should have the function of street lamp control, and has the function of light control and time control, and should have the function of automatic load control at night.
BatteryAs the input power of the solar photovoltaic system is very unstable, so it is necessary to configure the battery system to work. General lead-acid batteries, Ni-Cd batteries, Ni-H batteries. The choice of battery capacity in general should follow the following principles: first, to meet the premise of night lighting, the daytime solar modules to energy stored, but also can meet the storage of continuous overcast and rainy days night lighting need electricity. The battery capacity is too small to meet the needs of the night lighting, battery is too large, on the one hand, the battery is always in a state of loss, affecting the battery life, while causing waste. The battery should be matched with the solar battery and the electricity load. A simple method can be used to determine the relationship between them. Solar power must be 4 times higher than the load power, the system can work properly. The voltage of the solar cell is more than the working voltage of the storage battery 20~30%, so as to ensure that the battery is charged negatively. The capacity of the battery must be 6 times higher than that of the daily load.
Solar street lamp consists of the following parts: solar panel, solar controller, battery pack, light source, lamp post and lamp shell. If the output power for AC 220V or 110V, but also configure the inverter.
Solar panel:Solar panel is the core part of solar street lamp and the most valuable part of solar street lamp. Its role is to convert the sun's radiant power into electrical energy, or sent to the storage battery. There are three kinds of solar cells, polycrystalline silicon solar cells, amorphous silicon solar cells and so on. In the sunny and sunny parts of the eastern and western regions, the use of polycrystalline silicon solar cells as well, because the polycrystalline silicon solar cell production process is relatively simple, the price is lower than the single crystal. In rainy days more, the sun is not very adequate in the southern region, the use of monocrystalline silicon solar cells as well, because the performance parameters of monocrystalline silicon solar cells are relatively stable. Amorphous silicon solar cells in the absence of outdoor sunlight is better, because the amorphous silicon solar cells are relatively low requirements for solar conditions.
