@saptzae post #500
What has to be done, is to make the BMS more sensitive to voltage transients on individual cells and shut charging down very quickly.
A Battery that cannot be charged cannot be relied upon to perform. The purpose of the Batteries: to provide a storage of dependable power to satsify regulations.
NTSB have stated unequivocally that this incident was precipitated by a short in one of the eight 'cells'.
The short led to thermal runaway, a disqualifying condition for service. (imo)
Boeing has proposed a heavy and sturdy containment to prevent fire from spreading and other disqualifying conditions, admirable.
The failure mechanism is known. Can this battery be made safe such that containment is not a requirement?
Other large battery packs have been constructed from “large format cells” that have capacities in the range of 10 to 100 Ah. Standards for these sorts of applications are currently being written or revised to be appropriate for lithium-ion technology
(from: "Fire Research Study", Exponent Failure Analysis Associates, July,
2011
We'll have to see, but I don't think 'containment' will 'fly'.