Toasty ...

https://www.zerohedge.com/geopolitic...-fire-shanghai

On Wednesday, 22 July 2020 17:48:32 UTC+1, Andrew wrote:
Toasty ...

A little while longer to wait for commercial electric aircraft, I think.

Owain

Yes well, the idea of smaller batteries, with high power densities is going
to be a challenge due to the problems of keeping them from shorting out.I
mean even an old fashioned lantern battery and some wire wool can ignite a
pretty fire if you are not careful.
Brian

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On Wednesday, 22 July 2020 17:48:32 UTC+1, Andrew wrote:
Toasty ...

A little while longer to wait for commercial electric aircraft, I think.

Owain

Brian Gaff (Sofa) wrote:
Yes well, the idea of smaller batteries, with high power densities is going
to be a challenge due to the problems of keeping them from shorting out.I
mean even an old fashioned lantern battery and some wire wool can ignite a
pretty fire if you are not careful.
Brian


The battery has an internal safety feature.

https://batteryuniversity.com/learn/...afety_concerns

"We need to keep in mind that these safety precautions are
only effective if the mode of operation comes from the
outside, such as with an electrical short or a faulty charger.

Under normal circumstances, a lithium-ion battery will simply
power down when a short circuit occurs.

If, however, a defect is inherent to the electrochemical cell,
such as in contamination caused by microscopic metal particles,
this anomaly will go undetected. Nor can the safety circuit stop
the disintegration once the cell is in thermal runaway mode.
Nothing can stop it once thermal runaway mode is triggered."

You could dip the battery pack in liquid nitrogen. Eventually,
you'll win and the battery will be frozen solid.

https://www.sciencedirect.com/scienc...42435118302800

"To confirm the proposed mechanism, we froze a battery undergoing
the thermal runaway process by liquid nitrogen and subjected it
to detailed post-test analysis."

Paul