If the battery or batteries had exploded it would have blown the doors and windows out, not brought the entire home down. You would also see discoloration around the batteries and case or cases blown apart and there would be denting and holes in the door of rhe cabinet holding the batteries. So....
Wow, basen rack.mounts batteries destroy a home in germany
- Thread starter houseofancients
- Start date
k490
Solar Enthusiast
I know this isn't exactly related but here is the report from a 2019 battery storage explosion here in Arizona. It's a very detailed report although they are using Lithium-Ion batteries instead. It's still interesting to read about a battery storage systems built by smart people and backed by millions of dollars can still explode.
One thing they noted was thermal runway of one cell caused other cells to heat up due to lack of a thermal barrier between cells. One bad cell could cause others to vent as well due to the heat transfer to next cell.
One thing they noted was thermal runway of one cell caused other cells to heat up due to lack of a thermal barrier between cells. One bad cell could cause others to vent as well due to the heat transfer to next cell.
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houseofancients
Solar Wizard
And this is exactly the reason li-ion shouldn't be used as solar storage, not to mention, shouldn't be anywhere near someone's home
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TommySr
Solar Enthusiast
should BMS's include carbon monoxide sensors?
my gut says no because once it present it's too late for the battery cell (damage is done).
Tommy
SE Wisconsin
my gut says no because once it present it's too late for the battery cell (damage is done).
Tommy
SE Wisconsin
Daddy Tanuki
Solar Wizard
lithium cells in a Kiln... this will not end well. I am hoping you have a video so we can watch the carnage....
TommySr
Solar Enthusiast
Mr Tanuki, I'll be sure to start a topic here in up in smoke if (or when) it happens.
Tommy
SE Wisconsin
Daddy Tanuki
Solar Wizard
that is a ceramic firing kiln right? I had images of you accidentally flicking the power on after a couple of stiff drinks!
TommySr
Solar Enthusiast
that is a ceramic firing kiln right? I had images of you accidentally flicking the power on after a couple of stiff drinks!
Mr Tanuki, not likely, with the grandkids now off to collage, the kiln's power cord is being used by the 5kw gas generator
to power the house when the grid fails.
That doesn't mean I won't be posting here on UP IN SMOKE in the near future, because I'm making a DIY BMS.
Tommy
SE Wisconsin
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Daddy Tanuki
Solar Wizard
Tommy the name is Ken, a Tanuki is an animal peculiar to Japan that looks like a cross between a racoon and a dog, matter of fact most service members call them racoon dogs. so basically I am a lovable mischievous trash panda.
that is a kiln though right? to have one of those in your own home is actually pretty impressive with what they cost. laugh folks, When the SHTF the ability to make things like jugs, plates etc, will be worth something! just gotta figure out how to power it via solar
good luck with the DIY BMS I am not nearly that ballsy.
That's exactly what I thought when I read the article. Maybe a loose connection sparked or heated up, or like you said a relay triggered a spark, that then set off some other type of gas leak.
There's no way one of those battery packs blew holes through concrete. A lot of houses in Germany are built out of thick concrete / cinder block, and it would take a hell of a lot of energy to break that apart to the point of structural failure.
That basement photo looks like someone set off a pound of tannerite.
Daddy Tanuki
Solar Wizard
not sure, but I don't think even a pound of low power explosive like tannerite would not do that unless it was inside a pressure vessel to concentrate the blast.
the battery cases were pretty much intact, the person has a gas water heater, and it was an insurance company blaming the batteries. thats All I needed to read. until some other agency that does not have a vested interest in either direction comes up and says it was the batteries... I call BS.
IF the battery is were one of the more energy dense version of lithium that we know can and do explode and catch fire on a regular basis I would consider it, except the fact that the battery cases were in pretty good condition form the few photos that were posted.
I work for a company that does electrics, water and gas in germany and we recently had a case where a gas boiler literally exploded due to not being taken care of in 20 years.
OffGridForGood
Catch, make or grow everything you can.
yeah like the home-owner that thought they would "fix" their "leaking" Hot Water Tank, by removing the dripping drop pipe from the temperature & pressure relief valve, and installing a solid threaded plug!!
The problem with a fool-proof system is our under estimation of the ingenuity of complete fools - love that statement,{Credit @upnorthandpersonal}
The problem with a fool-proof system is our under estimation of the ingenuity of complete fools - love that statement,{Credit @upnorthandpersonal}
Daddy Tanuki
Solar Wizard
damn even I am not that stupid... must have been air force...
Coydon
New Member
No problem, just oversize your home system by about a factor of 100 to run that kiln. Or just do it the way that makes sense with a few sticks. Plus, you can't get the wood effect from electric...
mement0
New Member
The investigation has come to an initial conclusion. It looks likely that it one of the server rack batteries that caused the blast after all..:
Interesting fact: this is the middle battery - the ones below and above appear to be unaffected, and were still charged (these contained prismatic cells btw, while the baked battery was built out of pouch cells).
Interesting fact: this is the middle battery - the ones below and above appear to be unaffected, and were still charged (these contained prismatic cells btw, while the baked battery was built out of pouch cells).
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Why do I have the feeling they might have been different voltages, 15s and 16s mixed? Still, the BMS should have cut that one off...
I believe so.
Maybe it did just that quite some time ago, then drained the cells to the point of instability.
But then the BMS would enable charging again, as the voltage drops below the high voltage reconnect.
Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 21,842
BMS with cells at low SoC and voltage enables its FETs, paralleling the battery with another one at high SoC and voltage?
OK to close FETs onto a current source (SCC) but not voltage source (battery.)
Disconnect due to over-current. Wash, rinse, repeat?
OK to close FETs onto a current source (SCC) but not voltage source (battery.)
Disconnect due to over-current. Wash, rinse, repeat?
Zwy
Emperor Of Solar
I'm not buying that story.
That battery box is intact. The top is bulged in the first photo, the second photo shows intact sides. An explosion inside the box would have caused the box to sustain more damage.
How does the box stay intact yet blows out a concrete wall?
Brucey
Solar Wizard
Coincidental timing:
BYD to stop pouch type battery production amid durability concerns: report
Electric vehicle maker BYD is reportedly planning to phase out the pouch-type batteries that have been used in its best-selling hybrids.
www.teslarati.com
I think GMs ultium platform is still based on pouch cells?
What's exciting to me is talk of mini blades I e shorter ones
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