Hi: I cant put out anything which may show proprietary info, but here are a couple close up fragments of images of failure trials where the BMS system was not able to catch the issue before the event went out of bounds thermal.
As you can see some kind of corrosive gas coated many surfaces inside the battery pack while reacting with and discoloring any aluminium which was in the near vicinity of the cells I definitely would not use any material other than metal or some other very chemical/heat/fire resistant materials in and around Lion cells and I'd vent the battery pack to the outdoors. I'm sure there will be many perfectly reliable and safe packs, but soon there will also be something like a melted laptop or cell phone on steroids as a typical solar system battery has about 3000X as much energy as the cell phone/laptop. JARMO _____________________________________________________________________________________ Jarmo Venalainen | Schneider Electric | Xantrex Brand | CANADA | Sales Application Engineer Phone: +604-422-2528 | Tech Support: 800-670-0707 | Mobile: +604-505-0291 Email: jarmo.venalai...@schneider-electric.com | Site: www.Xantrex.com | Address: 3700 Gilmore Way, Burnaby, BC V5G4M1 *** Please consider the environment before printing this e-mail From: Ray Walters <r...@solarray.com> To: RE-wrenches <re-wrenches@lists.re-wrenches.org>, Date: 03/17/2015 01:35 PM Subject: Re: [RE-wrenches] Load testing Lithium battery bank Sent by: "RE-wrenches" <re-wrenches-boun...@lists.re-wrenches.org> Hi James; So couldn't Larry weld in rigid conduit fittings? Aren't they NPSM, or do I have that wrong? I suppose the Zinc plating would make a messier weld and possibly be poisonous.... Also to Chris Mason, I was not aware that load banks were available for rent. That sounds like a good option to consider. Do you have a recommendation on who rents those? 3rd response to Jarmo: do you have any pictures of the Li+ thermal issues? Are we talking structure fire potential, or just destruction of the batteries themselves? Is this another reason not to use plywood battery boxes? R.Ray Walters CTO, Solarray, Inc Nabcep Certified PV Installer, Licensed Master Electrician Solar Design Engineer 303 505-8760 > Note that water heater elements are NPSM (National Pipe Straight > Mechanical) and not NPT. So you need that type of half coupling or > "bung" to weld in. The vegi-oil people seem to have this sort of stuff > as they build water heater elements into things. > > _______________________________________________ List sponsored by Redwood Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. ______________________________________________________________________
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