A NEW, REVOLUTIONARY FIRE EXTINGUISHING AGENT FOR LITHIUM-ION BATTERY FIRES

Patent Pending

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how does

HOW DOES AVD WORK?


AVD TESTING CARRIED OUT TO DATE

  • We have done many trials on Lithium-ion and Lithium polymer batteries.
    Battery Type Chemistry Description
    LFP LiFePO4 Lithium Phosphate
    NMC Li (Ni0.45Mn0.45Co0.10)O2 Nickel Manganese Cobalt
    NMC/LCO Blended LiCoO2 and Li (Ni0.50Mn0.25Co0.25) O2. Lithium Cobalt NMC blend
    NCA Lix (Ni0.80Co0.15Al0.05) O2 Nickel cobalt alumina
    LCO LiCoO2 Lithium Cobalt Oxide

  • AVD has been 3rd party performance tested against a set performance criteria and certified at ZSW, see downloads for the relevant document.
  • AVD is practically effective when applied in a form of a mist.
    The vermiculite particles within the mist are deposited on the surface of the burning fuel to create a film over the top of the fire. The film instantly dries and because the high aspect ratio platelet particles overlap and bind together, they produce a non-flammable oxygen barrier between the fire and the atmosphere. This process offers a cooling to the surface of the fire and as the AVD platelets begin to build up the layer of vermiculate particles on the top of the fuel source, the fire is gradually cooled and brought under control.
  • AVD encapsulates the fuel source and insulates the cells preventing further thermal runaway; this prevents the spread of fire
  • AVD is suitable for application for both portable extinguishers and fixed systems.
  • The system can be designed to suit the specific requirements of the location.
  • Dielectric Test approved in line with BS EN 3-7: 2004 + A1: 2007 (tested at Apragaz, see downloads for certificate).

magnesium fire stage one

When Lithium-ion batteries are exposed to heat, physical/impact damage or over charging they go into thermal runaway.

magnesium fire stage two

The cells are sufficiently swollen releasing hot flammable gases (hydrocarbons) which can ignite.

magnesium fire stage three

The Hydrocarbons burn vigorously at high temperature and rapidly heat surrounding cells and materials resulting in a significant fire.

magnesium fire stage four

AVD is applied as a fine mist, which instantly cools the batteries and extinguishes the flames.

magnesium fire stage four

The AVD encapsulates the fuel source and insulates the cells preventing further thermal runaway; bringing the fire under control.


AVD

SEE AVD IN ACTION

AVD

AVD Brochure
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