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Tesla Battery Fire
#1

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#2
Posted that earlier. He's editor even joined so he could chat with us Wink
1958 greyhound likes this post
Proceed with caution. Knowledge is Power! Literally! Cool 
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#3
I'm always wondering how we could prevent from such a chain reaction and what it would require that one cell could blow up without the others blowing up also.
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#4
(01-13-2019, 10:10 AM)LEDSchlucker Wrote: I'm always wondering how we could prevent from such a chain reaction and what it would require that one cell could blow up without the others blowing up also.

You prevent such events by using the cells within their design guidelines and not abusing them, it's really that simple.
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#5
This doesn't happen just so, there has be a specific cause. Not sure if they knew or were able to find out after the fire. At the end they said something about the modules being without any management and so on, but that would most likely not be able to cause such a series of events. It's more likely a case of overcharge/overvoltage or a short without working fuses or something like that.

It has to be said that they reacted in the right way to this situation. Don't panic too much, get it out and prepare to prevent secondary fires. You can't put it out anyway and just have to wait. That's also why the fire brigade was all chilled and laid back, they know their business Smile In this case you're not going to rescue the thing that is burning anyway. Also there are no people in immediate danger so you just make sure that the surrounding area doesn't catch fire.
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#6
Between the other thread, and the comments on both videos (he has a follow up), it basically boils down to the fact they were using a dumb charger and the packs were out of balance. No BMS was used either. So the charger overcharged the cells until one of the packs went thermal. Because of the way they were packed into the cart, the heat was contained and caused the others to overheat and go thermal.

This all boils down to stupidity and blatant ignorance and over confidence. Just like Sean says, within their guidelines and not abusing them. That simple.
hbpowerwall likes this post
Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
Certified 18650 Cell Reclamation Technician

Please come join in general chit-chat and randomness at Discord Chat (channels: general, 3d-printing, linux&coding, 18650, humor, ...)
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#7
I know. But I'm about to build my own DIY BMS/Balancer, so I just want to be sure that nothing will happen. I think I will probably use a second over voltage protection feature to feel safe.
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#8
(01-13-2019, 03:40 PM)LEDSchlucker Wrote: I know. But I'm about to build my own DIY BMS/Balancer, so I just want to be sure that nothing will happen. 

No one here can promise You that nothing will happen. 

These forums contains lots of sound advice. 

If You follow the guidelines, you will be 99% secure. Smile

ChrisD
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