Howdy saptzae,
Monitor and Manage cells better. Eliminate cascading failures - Stop secondary and thereby Tertiary failure
As to Monitor.... Secureaplane has their patent, a method of sensing and thereby controlling charging? For each cell? That did not happen... Patents protect frrom imitation, they do not guarantee performance.
As we see, it is not possible to control (manage) charging in an eight battery (cell) series. The "control" is to take the unit (all eight) off line. This pertains to reliability, certainly a technical issue, grounding is not pertinent here...
NTSB have eliminated overcharging as a cause, at least preliminarily....
That leaves a primary. Short circuiting in large format LiIon batteries is not well understood, as a read of the above study demonstrates. There are no industry standards as of July 2011.
The FAA regulations were written in
2007 (sic).
For a serviceable cell to short circuit, internally, the separation Anode/Cathode must be breached. As far as I can determine, that means a break down of the separator, and/or, the presence of metallic Lithium dendrites, spanning the borders of the connectors at either end.
Dendrites far and away are the more troublesome of the two, separator issues are related to diffusion of the Ions, dendrites are a mechanical connector....
Some of the microscopic photography in the materials addendum is interesting....
The hearings are open to the Public. Are you considering being present?
I am.