As residential and commercial energy storage systems and electric vehicles rapidly grow in the U.S. market, battery safety has become one of the biggest concerns for users.

Although LFP batteries are inherently stable, thermal runaway can still occur under extreme conditions, leading to flame spread or damage to surrounding equipment.

Traditional fire suppression methods, such as water-based or dry powder extinguishers, are often difficult to use inside enclosed battery units and may damage the batteries or electronic equipment, or even create other hazards.

To address this issue, we have integrated aerosol fire suppression systems into some of our battery products. In products such as the High-voltage lithium battery, wall-mounted batteries, and the 48V Rack batteries series, you can see the aerosol module, which is typically installed on top of the battery cells.

What is an aerosol and how does the system work?

Physical suppression:

Metal salt particles in the aerosol melt or vaporize at high temperatures, absorbing heat and lowering the flame temperature, which slows down the fire.

Chemical suppression:

Solid particles and metal ions from the aerosol react with active radicals in the flame, cutting down the number of radicals and slowing combustion.

Reducing oxygen concentration:

The aerosol extinguishing process generates inert gases like N₂ and CO₂, which lower oxygen levels in the flame and stop the burning process.

We use S-type aerosol, which also has two major advantages.

An aerosol system mainly consists of two parts: an initiator (igniter) and an aerosol generator.

When an abnormal cell temperature is detected (our aerosol activates within the temperature range of 160°C to 180°C) or flames are present, the aerosol system is triggered, releasing particles through a designated outlet:

• The solid extinguishing agent inside rapidly releases micron-sized particles into the air, forming a dense cloud.
• These particles capture free radicals generated during combustion — the "fuel" that sustains a flame — thereby chemically blocking the spread of thermal runaway.
• At the same time, the system also lowers the local oxygen concentration, effectively suppressing flame spread.

In short, the aerosol fire suppression system uses chemical reactions combined with local environmental regulation to quickly suppress combustion. Compared to water-based extinguishing methods, it offers an efficient and reliable solution. 

It responds rapidly in the early stages of a fire, suppressing flame spread through chemical reactions, without affecting the normal operation of the battery or related electronic equipment. This makes it particularly well‑suited for energy storage systems.

We remain dedicated to battery quality and safety, committed to delivering a dependable energy storage experience!