• 15W solar street light includes solar panel, LED light, controller, battery.

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1. Solar Panel

Solar panel is the core part of solar street light, and also the most valuable part. The function is to convert the power of the sun into electric energy, or send it to the battery for storage. Monocrystalline silicon is the main material of solar cell material

2. Solar Controller

The most important part of the solar street lamp system is the controller, whose performance directly affects the life of the system, especially the life of the battery. The controller uses the industrial MCU as the main controller. Through the measurement of the environment temperature, the detection and judgment of the voltage, current and other parameters of the battery and solar cell module, the opening and closing of MOSFET devices are controlled to achieve various control and protection function.

3. Battery

Because the input energy of the solar photovoltaic power generation system is very unstable, the solar street lamp generally needs to be equipped with a battery system to work. O generally, there are lead-acid battery Ni Cd battery and Ni-H battery. The selection of battery capacity should generally follow the following principles: first, under the premise of meeting the night lighting, the energy of solar cell modules in the daytime should be stored as much as possible, and at the same time, the power needed for the night lighting of solar street lamps in rainy days should be stored.

4. LED Light

What kind of light source the solar street lamp uses is an important indicator of whether the solar lamp can be used normally. Generally, the solar lamp uses low-voltage energy-saving lamp, low-pressure sodium lamp, electrodeless lamp and LED light source.