How Lithium-Ion Batteries Work in an Energy Storage System

Lithium-ion batteries are a type of rechargeable battery that is commonly used in energy storage systems because of their high energy density, long cycle life, safety, and ability to be charged and discharged repeatedly.

Wondering how they work in an energy storage system? Let's find out!

Charging: When a lithium-ion battery is connected to a charger, a voltage is applied to the battery. This voltage causes lithium ions to move from the cathode (positive electrode) to the anode (negative electrode) through an electrolyte. The lithium ions are stored in the anode.

Discharging: When the battery is connected to a load, such as an inverter in an energy storage system, the lithium ions move from the anode to the cathode through the electrolyte. As the lithium ions move, electrons flow from the anode to the cathode through an external circuit, providing the electrical energy to power the load.

Recharging: When the battery is discharged, the lithium ions and electrons recombine at the cathode. When the battery is connected to a charger again, the lithium ions move back to the anode, where they are stored, and the battery is recharged.

Battery Management System: In an energy storage system, a battery management system (BMS) is used to monitor and control the charging and discharging of the battery. The BMS protects the battery from overcharging, over-discharging, and overheating, which can damage the battery and reduce its lifespan.

The use of lithium-ion batteries, especially lithium iron phosphate (LiFePO4) batteries in energy storage systems has become increasingly popular in recent years, due to their high efficiency and reliability. 

As a leading global energy storage systems company for both residential and commercial applications, AlphaESS is at the forefront of this trend, offering a range of cutting-edge products that help individuals and businesses make the most of their energy resources.