I kinda missed this article the first time around, then got to reading the actual paper direct (link here: https://onlinelibrary.wiley.com/doi/pdf/10.1002/est2.141). Their supposed experience of the 18650 battery splitting open right down the side is absolutely outrageous. I spoke with some battery experts in my company and none of them even think that is possible. Most 18650 cells have a CID (current interrupt device) which should disconnect the battery (make open circuit) if the internal pressure builds up too high. Something is very fishy about those batteries they have, perhaps they're a bad batch. I think in a few weeks/months Panasonic might have a word and correction about that article, since it is their battery that was tested and supposedly breaks open like that which would be a safety concern (although the scientists were charging the battery 4x in excess of the allowed max charging rate specified in the datasheet).
Anyways, I actually have both genuine Panasonic NCR18650B batteries and a custom built battery tester capable of subjecting these cells to such torturous cycle testing, so I'll be trying to reproduce their results in the next week or so :) -- Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/ _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/index.html INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
