An off-grid solar energy storage system is an independent energy system that does not rely on traditional grid power supply. Here are some key aspects about it:
Components:
Solar panels (photovoltaic arrays):
Convert solar energy into direct current, and its power and quantity are selected based on factors such as the required amount of electricity and local light conditions.
Different types such as monocrystalline silicon, polycrystalline silicon, and thin film have different efficiency, cost, and installation characteristics.
Energy storage device (battery):
Common ones include lead-acid batteries (more traditional but with certain pollution and maintenance issues), lithium batteries (high energy density, long cycle life, but relatively high cost), etc.
Used to store excess electricity generated by solar panels when there is light, so as to power the load when there is no light or insufficient light at night or on rainy days.
Controller (charge controller, system controller, etc.):
Charge controller: Prevents battery overcharge, over discharge, reverse charging, etc., optimizes the charging process, and protects the battery.
System controller (if there is a complex system): Coordinates and manages the operating status and power distribution of each component in the entire system. Inverter (off-grid inverter):
If you need to power an AC load (such as most household appliances, etc.), the DC power stored in the battery is converted into AC power.
There are different power levels, and you need to choose a suitable inverter according to the load power requirements.
Distribution box (including protection devices, etc.):
Contains circuit breakers, fuses, etc., which are used to protect the system's lines and equipment from damage caused by overcurrent, short circuit and other faults.
Convenient circuit on-off operation when maintaining and managing the system.