Briefing contents
Hi,
In a first analysis we may see they discarded failures (like a major short circuit) in the DC busses as causes of the problems.
This means:
The problem was not due catastrophic load to the batteries (excessive current draw)
My comment is because considering certainly there is no discharge control (perhaps will be required for Li Ion in aviation) the analysis is concentrating in:
1) Cell issues (defect, etc.)
2) "Circuitry" like protections, charger including design, algorithms, etc.
There are other points to comment. I´m further analysing.
E.g. the point on cell overcharge is intriguing. Are the cells charged individually in this design? IMO should be for airliners batteries.
With over "US$ 10 billion grounded" and other costly consequences the briefing shows we are distant from a solution (using Li Ion).
An immediate decision to revert to Ni Cd´s appears urgent and inevitable.
Can be implemented? Surely yes. Implications? We would need data not publicized, to estimate. Certainly less costly than the current situation.
Very serious issue. Painful teething! And a "virtual stalemate" (If Li Ion usage insisted).