Solar energy as a clean energy is drawing the world's attention. Developing solar energy will play a huge role in protecting the ecological environment. LED is a kind of energy-saving electric light source with high efficiency and long service life. This paper focuses on a solar LED street lamp designed with LED as light source. Solar LED lights can use photovoltaic cells to convert solar energy into electrical energy, and store electrical energy in batteries through the controller ( charging module ).In the evening, electrical energy from the batteries can power LED through the controller ( power supply module ), converting electrical energy into light energy. The practical circuit has stable performance, high luminous efficiency and complete functions. |