The main function of the solar controller

The solar controller is a device used to control the solar panel to charge the battery, and at the same time give the load control voltage to the voltage sensitive device. It regulates and controls the charging and discharging conditions of the battery, and controls the solar battery module and the The power output of the battery to the load is the main control part of the whole solar power supply system.

Then the solar controller has those main functions:
Load over-current and short-circuit protection: When the load current exceeds 10A or the load is short-circuited, the fuse will blow, and it can be used after replacement.

Overvoltage protection: When the voltage is too high, the output is automatically turned off to protect the equipment from damage.

Lightning protection: In case of lightning strikes, the varistor can prevent lightning strikes and protect the controller from damage.

Battery reverse polarity protection: The polarity of the battery "+" and "-" is reversed, and it can continue to be used after correction.

Battery open circuit protection: If the battery is open circuit, if the solar battery is charging normally, the controller will limit the voltage at both ends of the load to ensure that the load is not damaged, if at night or when the solar battery is not charging, the controller itself cannot get electricity, there will be no action.

Overcharge protection: When the charging voltage is higher than the protection voltage, it will automatically disconnect and charge the battery. After that, when the voltage drops to the holding voltage, the battery will enter the floating charging state. When the charging voltage is lower than the recovery voltage, the floating charging will be turned off. Enter the equal charge state.

Over-discharge protection: When the battery voltage is lower than the over-protection voltage, the controller automatically turns off the output to protect the battery from damage; after the battery is recharged, it can automatically restore the power supply.

Self-inspection function: When the controller is affected by natural factors or improper personal operation, the controller can be self-inspected to let the user know whether the controller is normal and reduce unnecessary working hours.

Recovery interval: The recovery interval of the controller's overcharge or overdischarge protection, to prevent the line resistance or the self-recovery characteristics of the battery from causing the work of the load to jitter.

Temperature compensation: monitor the temperature of the battery, correct the charge and discharge value, and make the battery work in an ideal state.

Light control: Most of them are used in automatic lamps. When the environment is bright enough, the solar controller will automatically turn off the load output; and when the surrounding environment is dark, it will automatically turn on the load to realize the function of automatic control.