The most basic function of Solar Controller
is to control the battery voltage and open the circuit, and that is, when the battery voltage rises to a certain level, it stops the battery charging. The old version of the controller mechanically completes the opening or closing of the control circuit, stopping or starting the power delivered to the battery by the power supply.
In most photovoltaic systems, a controller is used to protect the battery from overcharging or over-discharging. Overcharging may vaporize the electrolyte in the battery and cause malfunctions, while overdischarging the battery may cause premature battery failure. Overcharge and overdischarge may damage the load. Therefore, the controller is one of the core components of the photovoltaic power generation system and the main part of the BOS (Balance of System).
Simply put, the role of Solar Controller
can be divided into:
1. Power adjustment function;
2. Communication function: 1 simple indication function 2 protocol communication function such as RS485 Ethernet, wireless and other forms of background management;
3. Perfect protection function: electrical protection for reverse connection, short circuit, over current, etc.