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Solar Panel Composition And Functions Of Each Part

It is composed of solar battery pack, solar controller and storage battery (group). If the output power is AC 220V or 110V, an inverter is also required. The role of each part is: 

　　 (1) Solar panels: Solar panels are the core part of the solar power system and the most valuable part of the solar power system. Its function is to convert the sun's radiation capacity into electric energy, or send it to the storage battery for storage, or to drive the load. The quality and cost of solar panels will directly determine the quality and cost of the entire system.

　　 (2) Solar controller: The function of the solar controller is to control the working status of the entire system, and to protect the battery from overcharging and over-discharging. In places with large temperature differences, a qualified controller should also have the function of temperature compensation. Other additional functions such as light control switch and time control switch should be optional options of the controller. 

　　 (3) Storage batteries: generally lead-acid batteries, in small and micro systems, nickel-metal hydride batteries, nickel-cadmium batteries or lithium batteries can also be used. Its function is to store the electrical energy generated by the solar panel when there is light, and then release it when needed. 

　　 (4) Inverter: In many occasions, 220VAC, 110VAC AC power supply is required. Because the direct output of solar energy is generally 12VDC, 24VDC, 48VDC. In order to provide electrical energy to 220VAC electrical appliances, the DC power generated by the solar power generation system needs to be converted into AC power, so a DC-AC inverter is required.