Looks like even the engineers at Boeing don’t understand the proper use of of Li-Ion cells!
Think this will have any long-term affect on the availability of Li-ion batteries?
I've been wondering when this topic would show up on BLF. It doesn't bode well for air shipments of lithium ion batteries.
Interesting. As with everything in life there is a certain risk, more so in new technology. Mistakes and accidents only lead to a safer or newer product. What has happened here will I believe make a better and safer product for everyone. Car manufacturers and airlines will always chase how to make a product cheaper but in the same token it has to be safe or there insurance policies will be cancelled.
I read this story earlier, i would think boeing has a lot of incentive to test things very fully before sale, but this makes me wonder
At least it's not the airframe. Relatively, this is a very easy fix. It's still very bad that another very big engineering company has failed spectacularly with lithium batteries.
the FAA grounded the fleet of 787s pretty much until they have a quick fix/inspections. The 787 is amazing but its has been having issues lately, and this one being a fairly serious one. still its brand new tech, at least in the airliner side
also correct me if i am wrong but i see no mention that it was overcharging that caused it
The fire could have nothing to do with the battery itself but with the charging electronics yet, people will ultimately blame the LiIon battery…
tis possible, but since we know the risks of lithium batteries, and we assume boeing has made enough electronics not to make a stupid mistake in its design and construction, we assume its likely the batteries
however time will prove us right or wrong, maybe the issue is neither of these, but its that mice that found out that the wire insulation is made from soy and it tastes good (i doubt its made from soy, but just throwing an alternative scenario out there)
I think maybe it’s more likely that it doesn’t bode well for the guys who designed this sub-system :bigsmile:
Everything is still under investigation, so nobody officially said anything about overcharging.
Simply, an engineer at Boeing said that lithium cells may take on fire if overcharged, but nothing more.
In the meantime another Jap airline 787 has encountered a similar accident but on-flight, thus resulted in an emergency landing to the nearest airport in Japan (no injuries)
Now the two accidents are under investigation, also to see if sharing the same problem or two different ones.
US FAA has grounded all 787, just for safety precaution, waiting for those investigative results.
Absolutely correct, it’s all speculation so far.
The press seems to put lithium-ion batteries in almost the same risk category as assault rifles, but they never seem to get around to telling people that they power almost all of our laptops.
Counterfeit Parts that are substandard can find their way into many places. I have seen pallet boxes full of substandard/fake/rebuilt circuit breakers and bolts sold for critical applications. Not to worry, they had been identified as such and were destroyed.
Given the complexity of multiple vendors bodging together extremely complicated subsystems, I’m a bit surprised the 787 gets off the ground.
Don’t even let me start ranting about the race to the bottom — quality-wise — that always seems to happen when you engage 3rd party contractors to build a portion of a project.
Considering Boeing doesn’t make their electronics but farms that out, I wouldn’t be surprised if you took that charging circuit apart and found an HXY generic charger!
I know NASA uses lithium-ion batteries in their rovers and there’s even a good analysis of their proper use and benefits online…it speaks favorably of these cells, but cautions about over-charging. If I find a link I’ll post it.
I guess we should outlaw them along with the guns. Who needs liberty when you have safety?
There were literally thousands of hours of testing in the air done on these APUs before they were certified for 787 use.
It may be a case of the latest programming revision to the charging circuit causing the issue.
Last minute ‘improvements’ can be disastrous.
So your saying i shouldn’t have waxed my car yesterday 