Professional analysis of the composition of solar street lights

by:Litel Technology     2021-11-07
Professional analysis of the composition of solar street lights

   solar street lights are composed of the following departments: solar panels, solar controllers, battery packs, light sources, light poles and lamp housings. If the output power is AC 220V or 110V, an inverter is also required.

  1, solar panels:

   Solar panels are the core sector in solar street lights, and they are also the most valuable sector in solar street lights. Its influence is to convert the sun's radiant power into electric energy, or send it to the storage battery for storage. Among the vast array of solar cells, there are three kinds of solar cells that are more widespread and practical: monocrystalline silicon solar cells, polycrystalline silicon solar cells, and amorphous silicon solar cells. In areas where there is plenty of sunlight, it is better to use polycrystalline silicon solar cells, because the production process of polycrystalline silicon solar cells is relatively simple and the price is lower than that of single crystal. In the southern regions where there is a lot of fighting force on cloudy and rainy days and the sun is relatively less abundant, Jiangsu Naite Lighting Electric Co., Ltd. is engaged in the production and design of solar street lamps and high-pole lamps. It has 20 years of solar street lamp production experience and builds the most professional solar street lamp manufacturer. Contact number: 13805257308. , It is better to use monocrystalline silicon solar cells, because the performance parameters of monocrystalline silicon solar cells remain unchanged. Amorphous silicon solar cells perform well in an environment with insufficient outdoor sunlight, because amorphous silicon solar cells require relatively low sunlight conditions.

  2, solar controller

  Solar street lamp composition Regardless of the size of the solar lamp, a charge-discharge controller with good performance is indispensable. In order to prolong the service life of the battery, its charging and discharging conditions must be restricted to prevent the battery from overcharging and deep charging. In places with large temperature differences, a qualified controller should also have a temperature compensation function. At the same time, the solar controller should have both street lamp control functions, light control, time control functions, and automatic load control at night, so that it is convenient for rainy days to delay the working time of street lamps.

  3, battery

   Since the input energy of the solar street light photovoltaic power generation system is extremely constant, it is generally necessary to configure a battery system to work. Generally, there are lead-acid batteries, Ni-Cd batteries, and Ni-H batteries. The selection of battery capacity generally follows the following principles:

   First of all, on the premise that it can meet the lighting at night, the energy of the solar cell modules in the day should be stored as much as possible, and at the same time, it should be able to store the electrical energy that can meet the lighting needs of the continuous rainy day at night. The battery capacity is too small to meet the needs of night lighting. The battery is too large. On the one hand, the battery is always in a state of power loss, which affects the battery life and causes luxury. The storage battery should match the solar battery and the electric load (street lamp). A simple way can be used to determine the relationship between them. The solar cell power must exceed the load power by more than 4 times before the system can work normally. The voltage of the solar cell must exceed the working voltage of the battery by 20~30% to ensure the normal negative charge to the battery. The battery capacity must be more than 6 times higher than the daily consumption of the load.
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