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How to design solar LED street lights

Update:20 Feb 2019
Summary:

Solar street lamps include solar cell module batteries, […]

Solar street lamps include solar cell module batteries, light sources, light poles, solar controllers, etc., and the following issues should be paid attention to in the design.

The first is the choice of light source. According to the actual needs of the lighting situation, we should choose the appropriate power and light source. According to the practice in recent years and the development of led, energy-saving and environmentally-friendly LED is generally used as the light source. Rural and small street lighting is generally 20 to 40. There are more between the tiles;

Secondly, the solar cell module selection configuration should be selected according to the power consumption and solar radiation. The difference between the north and the south of China is relatively large, and it must be determined according to the lighting conditions of different regions.

Third, the choice of battery design battery capacity calculation is simpler than the peak wattage of solar modules, according to the daily power consumption of the load, and the rainy weather that requires continuous load, plus the first night of work to determine the battery capacity.

Fourth, the solar cell module bracket design is first designed with a dip angle. In order to allow the solar cell module to receive as much solar radiation as possible during the year, we need to select an optimal tilt angle for the solar cell module. Followed by the wind-proof design of the solar street light system. The wind-resistant design is mainly divided into two large blocks, one is the wind-resistant design of the battery assembly bracket, and the other is the wind-resistant design of the light pole.

Fifth, it is the solar street light system controller. The main function of the solar charge and discharge controller is to protect the battery. The basic functions must have overcharge protection, over discharge protection, light control, time control and anti-reverse connection. In the selection of devices, there are currently single-chip microcomputers, and there are also comparators. There are many schemes, each with its own characteristics and advantages. The corresponding scheme should be selected according to the customer's demand characteristics, which will not be detailed here.
Sixth is the surface treatment of solar street light poles. The general requirement is hot-dip galvanizing, which is self-cleaning, corrosion-resistant and aging-resistant, suitable for any climate.