I would tell them that there are different types of Li-ion and many are not made to be "repurposed" and should be re-cycled. Many are not safe in the home and I certainly would not want my name on anything crazy, like this sounds.
To do this the BMS needs to be recalibrated for cycled bateries. I doubt the talent/engineering exists in this very new technology. Send them to E-bay where there seems to be plenty of people willing to risk their apartments:) --Dave Dave Darryl ThayerDave > Thermal Runaway is caused by part of a cell or cells being warmer than > other cells as the cell warms is to voltage drops and the other cells > power > into that cell or can be caused by a failure of that cell usually a > failure > of a Cell results in a fuse being blown fusible link being blowing a good > way to avoid thermal runaway is to maintain all the cells at the same > temperature with an active cooling system. Systems like the Nissan Leaf > use > packs instead of individual cells this greatly reduces the potential for > thermal Runaway however the surge-charge-rate are reduced with this style > of cell. Thermal runaway most commonly occurs on charging however it can > occur on discharging also. As many of us know thermal runaway can occur > with lead acid AGM type batteries and even flooded if too many cells are > placed in parallel. > > On Oct 5, 2017 8:45 AM, "Drake" <[email protected]> > wrote: > >> Hello Wrenches, >> >> I've been contacted by a group who will be taking apart lithium ion >> battery packs that have been retired, finding the bad cells and >> recombining >> the remainder, then putting them in larger configurations for use in PV >> systems and electric vehicles. >> >> How can thermal runaway be avoided? Is there any information that could >> be >> of use in making these systems safe and effective? >> >> Thanks, >> >> Drake >> >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/[email protected] >> g/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail [email protected] text 209 813 0060 _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
