The solar power generation system consists of solar panels, solar controllers, and solar batteries. 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 generation system and also the value part of the solar power generation system. Its function is to convert the sun’s radiation capacity into electric energy, or send it to the storage battery for storage, or drive the load to work.
2.Solar controller: The function of the solar controller is to control the working state of the entire system, and to protect the battery from overcharge and over discharge. 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.Solar batteries: generally lead-acid batteries, nickel-hydrogen batteries, nickel-cadmium batteries or lithium batteries can also be used in small and micro systems. 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: The direct output of solar energy is generally 12VDC, 24VDC, 48VDC. In order to provide electrical energy to 220VAC electrical appliances, it is necessary to convert the DC power generated by the solar power generation system into AC power, so a DC-AC inverter is required.
In summer, we may use solar energy very well, but in winter, the time of sunlight exposure is short, and the water may not be too hot if we take a bath. So everyone should choose according to their own situation.