On 6/23/2020 1:30 PM, Lawrence Winiarski wrote:
Bill Dube -> Do you mean the solvent is flammable? UggThat could
be a big problem. Do you know what is used?
Ethylene carbonate is a common li-ion cell electrolyte. Wikipedia
explains that there are several organic solvents that are commo
Bill Dube -> Do you mean the solvent is flammable? UggThat could be a big
problem. Do you know what is used?
Lee Hart -> I'm sure that would add to the difficulty, but still I would
think anything that makes the battery "less" of a batteryand more of a chunk of
plastic and foil
There is very little electrolyte in a Lithium Ion battery. If you open one up
it doesn’t pour out. It is mostly on the pos and neg terminals based on charge
state. You might get a few teaspoons. The idea is to only have as much as
needed to increase the energy density. More electrolyte increases
Maybe eventually but I think it just burns up all the fuel. It was over 30
minutes ten the the first time and twenty the second time and the fire still
wasn’t out. They never actually show the fire out on that Leaf
Sent from my iPhone
> On Jun 22, 2020, at 1:52 AM, Cor van de Water via EV
> w
Bill Dube via EV wrote:
This would work for lead acid, where the electrolyte is water based, but
li-ion cells have an organic solvent based electrolyte.
An additional problem is that the electrolyte is mostly held in the
separators between the plates. Depending on the specific type of
battery
This would work for lead acid, where the electrolyte is water based, but
li-ion cells have an organic solvent based electrolyte.
Bill D.
On 6/22/2020 11:40 AM, Lawrence Winiarski wrote:
I had an idea once. Dump the electrolyte in a fire. That stops the
battery reaction and stops the fire.
The "Triangle of Fire" shows that there are 3 things necessary to
sustain a (traditional/house) fire: Fuel, Oxygen and Heat:
https://en.wikipedia.org/wiki/Fire_triangle
Obviously, in a chemical fire this can change but the idea of fire
extinguishing stays the same:
Remove *ONE* element of the trian
I’m not buying it. LiCoO2 batteries have their own oxygen source that it why
the Dreamliner Halon system didn’t work when they had battery fires. If they
left it that battery would have continued to burn.
Sent from my iPhone
> On Jun 21, 2020, at 3:41 PM, evln via EV wrote:
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> https:/
I had an idea once. Dump the electrolyte in a fire. That stops the battery
reaction and stops the fire. I'd bet you could make a
heat sensitive relief valve (at the bottom) and as the battery heats up, it
would dump the electrolyte (which is getting hot anyway and would eitherpour
via gra
This might work, but the fact is that nearly all EVs have metal-oxide
(ie cobalt) li-ion cells than make their own oxygen internally.
Basically a fire blanket is useless in an EV fire, and might even
exacerbate an EV fire by holding in the heat.
What works is water applied liberally and continu
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