The next big business will be fire-protection systems installed in garages that house EVs. Once smoke and/or temperatures exceed a certain value, the halon gets released to extinguish the fire.
A battery fire just has to burn itself out and that happens when the energy it contains is gone. The new thinking on EV fires is to pick them up and dump them into a frac tank full of water and leave it there for days.
The halon and CO2 systems I used to install dumped in maybe 30 seconds.
Yesterday morning WMUR(ABC Manchester, NH) reported a fire in the garage at a lake house up in central NH. I immediately thought EV fire. They showed the garage end of this very expensive home. All charred up. The remainder of the house looked okay. However, they never listed the cause of the fire. WMUR tends to be a liberal station. I wondered whether they would omit that part of the story. Although, IF it had been an EV fire, I doubt the local fire department could have put it out.
....Once smoke and/or temperatures exceed a certain value, the halon gets released to extinguish the fire....
The greenies have banned halon extinguishers at least for you and me. It goes back to this “ozone hole” business.