This statement makes it sound too much like I'm concerned about minor 'blips' below 1.1V. That's not the case. There's really two main things I'd be worried about:...Given voltages mentioned in this patent, it makes me think it's possible, or likely, that when a cell dips below say 1.1V, it might degrade the 'cobalt conductive matrix'. And since, in the car, there's never anything approaching a re-formation type of charge, that cobalt is lost. Self discharge and the cell's ability to cope with future incursions below 1.1V will erode the cobalt matrix even more. Eventually you end up with a cell or more with super fast self discharge and a failed pack... At least, that's my vague theory...
-in connection with what I've learned from 'rock-bottom' charge state usage and taking tap measurements (such as the charts strewn along in above posts), I'm concerned that 'the car' doesn't actually catch cells all the time when they drop well below 1.1V.
-uneven self discharge: it's what makes risk to single cells all the more likely.
My concern is that it may be all-too easy for a single cell to be regularly, perpetually driven low. There's two 'bad' things that I'm thinking result from this (beyond the already-too-fast self discharge):
-the cells that remain high get voltage depressed; they need to be discharged down to at least 1.1V. The one low cell disables the discharge before these other cells get even close to 1.1V.
-the one low cell gets driven below 1V on a regular basis; the new idea is that this might damage the 'cobalt matrix', and this damage would result in smaller capacity, lower efficiency (i.e. worse performance), but most importantly, even faster self discharge and even less ability to cope with this kind of abuse.