System for extinguishing a fire and / or preventing a fire from starting or restarting in an electric vehicle, associated method of operation comprising a prior step of lifting the vehicle off the ground

A system for extinguishing a fire and/or preventing a fire from starting or restarting in an electric vehicle including a module or a battery pack comprising a plurality of electrochemical batteries, comprising:

• a self-supporting inflatable structure, the shape and dimensions of which when deployed are configured to lift the electric vehicle off a ground, create a liner between the ground and the electric vehicle, and create a peripheral barrier in continuity with the liner, which is closed upon itself, around the electric vehicle;
• and
• a liquid supply device configured to fill, at least partially, a sealed volume delimited inside the peripheral barrier and by the liner with a liquid, so as to immerse at least the module or battery pack in the liquid,
• wherein the self-supporting inflatable structure comprises at least one lifting cushion which deploys vertically under the vehicle as it inflates and a flexible strip extending from a bottom of the at least one cushion and deploying when it is inflated under the lifted electric vehicle toward a periphery thereof, so as to create the liner,
• the lifting cushion being configured to lift the vehicle when deployed so as to allow the flexible strip to deploy under the lifted electric vehicle.