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Understand the working principle of solar street lights

The reason why the solar street light can turn on at night and in winter is because it has a battery, so what is its working principle?

Solar street light structure:

The main hardware of solar street lights are: photovoltaic panels, batteries, solar charge and discharge controllers and LED lights, etc.

working principle:

1. Photovoltaic panels

Photovoltaic panels are composed of multiple sets of solar cells, most of which are monocrystalline silicon or polycrystalline silicon. It uses the principle of "photoelectric effect" to convert light energy into electrical energy, and finally outputs direct current.

The photoelectric conversion efficiency is related to the photovoltaic equipment and the intensity of light. The stronger the light, the more electricity is converted, and the less light is converted. There is also light in winter, so electrical energy is also output.

2. Battery

Because photovoltaic panels output direct current, they can be stored directly in batteries.

3. Solar charge and discharge controller

Solar charge and discharge controller is an important equipment for photovoltaic street lights.

It can guarantee constant current output and reduce the use of led lamp driver

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