Principle And Structure Of Solar Street Lights

Most of the street lights we see on the road use solar energy. Solar street lights use sunlight as power. The sunlight is used to charge the battery in the daytime, and the battery in the night is used as the light source. The whole process is energy-saving and pollution-free, and the operation is stable, and manual operation is not required.

Principle of Solar LED Street Light-Structure

 1. Solar panels

Solar panels are the core of solar street lights and the most valuable ones in solar street lights. Its function is to convert the solar radiation into electric energy, or send it to the storage battery for storage. Solar cells mainly use monocrystalline silicon as data. Use monocrystalline silicon to make a P-N junction similar to that in a diode. The operating principle is similar to that of a diode. It's just that in the diode, it is the external electric field that promotes the movement of the holes and electrons in the P-N junction, while in the solar cell it is the solar photons and light radiation heat that promote and affect the movement of the holes and electrons in the P-N junction. It is also known as the principle of photovoltaic effect. At present, the power of photovoltaic cells is about 13%-15% for monocrystalline silicon and 11%-13% for polycrystalline silicon. Now the latest technology also includes photovoltaic thin film batteries.

2. Solar controller

The most important part of the solar lighting system is the manipulator, its function directly affects the life of the system, especially the life of the battery. The manipulator uses an industrial-grade MCU as the main manipulator. Through the measurement of the ambient temperature, the inspection and discrimination of the parameters such as the voltage and current of the battery and solar cell components, the registration and shutdown of the MOSFET devices are controlled to achieve various control and protection functions.