|
| |
Charge Controllers.
The charge controller is a solid state device that prevents
overcharging the batteries and may have a low-voltage disconnect to prevent the
load from completely discharging the batteries. The charge controller must be
carefully matched to the batteries to prevent overcharge or too much discharge.
The batteries are usually of lead-acid or gel configuration and are treated the
same as any stationary battery used for utility purposes.
A charge controller is utilized to control the flow of electricity between the
module, battery, and the loads. It prevents battery damage by ensuring that the
battery is operating within its normal charge levels. If the charge level in the
battery falls below a certain level, a "low voltage disconnect (LVD) will cut
the current to the loads, to prevent further discharge. Likewise, it will also
cut the current from the module in cases of overcharging. Indicator lights on
the controller display the relative state of charge of the battery. Charge
controllers should be appropriately sized to handle the peak power output of the
solar array
|
