- Dec 07, 2017 -
A solar charge discharge controller is extremely necessary for almost all solar power generation systems powered by batteries. The function of the solar charge and discharge controller is to adjust the power from the solar panel to the power of the battery. The battery overshoot at least significantly reduces the battery life, from the worst to the damage of the battery until it can't be used normally.
The basic function of the solar charge and discharge 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 battery charging. The old version of the controller mechanically completes the opening or closing of the control circuit, and stops or starts the power of the power supply to the battery.
The modern charge and discharge controller uses pulse width modulation (PWM), and when the battery charges slowly approaching the saturation state, it slowly reduces the amount of power transported to the battery. This PWM controller greatly reduces the load of the battery, and achieves a complete charging state and prolongs the service life of the battery. This controller can make the battery fully reach the full state (also called float). PWM is more complex than the previous one, but it does not interrupt any line that is connected to it.
The latest is also the best solar charge and discharge controller known as the maximum power tracking point or MPPT. When the MPPT controller is basically the superfluous voltage can be ampere. This has a pair of advantages in a variety of fields.