Solar battery: A device that can convert chemical energy into electrical energy, with positive and negative electrodes. A solar battery generally refers to a small device that can generate electrical energy. such as solar cells. Using the solar battery as an energy source can obtain a current with stable voltage, stable current, stable power supply for a long time, and little external influence, and the solar battery has a simple structure, easy to carry, simple and easy charging and discharging operations, and is not affected by external climate and temperature. Influence, stable and reliable performance, play a great role in all aspects of modern social life.