First, [About the simple working principle]. You are right. During the day, the solar panels absorb solar energy and convert it into electrical energy and store it in the storage battery. At night, the storage battery supplies power to the street lamps.
Second, [About where to put the battery]. Traditional solar street lights are generally recommended to be buried in the ground. As for the benefits, I won't say much; the integrated solar street lights use lithium batteries and are all packaged together. Of course, the more traditional solar street lights are currently used.
Third, [About DC and AC inverter issues]. At present, solar street lights adopt DC system, 12V or 24V. No additional inverter is required.
Fourth, [About how the photovoltaic controller works]. I briefly summarized from the perspective of its function, the port voltage of the battery panel during the day is higher than the battery voltage, and the controller will reduce it to a certain suitable range voltage to charge the battery to protect the battery and prolong its life; when the voltage is lower than a certain value , The controller will disconnect the battery board from the battery. When lighting is needed, the controller will connect the battery and the lamps to form a closed loop.
Fifth, [About after the battery is full]. If the battery is full, the controller will also disconnect the closed circuit formed by the battery board and the battery, so that it will no longer be charged.
Sixth, [About battery power supply for street lights]. It is controlled by the solar street light controller.
Seventh, [About where to put the controller]. It is usually placed inside the light pole near the appliance door.