Fire Protection Solution for Lithium-ion Battery Energy Storage System

As the core component of the energy storage system, the lithium battery is the primary factor affecting energy storage safety. Fire is the most common cause of damage to lithium-ion battery energy storage systems. Under various complex working conditions, batteries have potential for sudden combustion and explosion phenomena caused by internal failures or external ignition sources such as overcharge, short circuit, lightning strikes, electrical arcs, extrusion, vibration, collision, etc.. When a fire occurs, the battery pack temperature will rise rapidly and the pressure inside the battery pack becomes higher than atmospheric pressure outside. If there are any leaks in the battery pack during this process, they will become much worse when exposed to high temperatures.
In BESS, a single battery releases a large amount of heat when thermal runaway occurs, and the heat is transferred to adjacent batteries through convection, radiation, conduction, etc. When the temperature of adjacent battery cells reaches the thermal runaway trigger temperature, thermal runaway propagation is induced. This phenomenon can result in significant damage to surrounding equipment and facilities.
 

The lithium ion battery is the most popular energy storage device in the world. The most important thing to note about lithium ion batteries is that they need to be kept at a certain temperature and oxygen level to prevent fires. In order to achieve this goal, the battery storage container must be filled with encapsulated inert gas (such as nitrogen). This will keep the temperature constant and prevent fire from occurring due to overheating or overcharging.
High-purity nitrogen can be used as an inert gas that can dilute flammable gases below the lean limit, protect lithium batteries from oxygen and heat damage during storage. Guchen nitrogen fire protection system produces high purity nitrogen by separating air into its components (nitrogen and oxygen) , which has good efficiency and low energy consumption. It also has stable quality performance and can be used for many years without maintenance.