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On Tue, Mar 17, 2020 at 12:52 PM Peter C. Thompson via EV <ev@lists.evdl.org> wrote: > > Hi Peri, > > I don't have personal experience with Tesla, but I do with other OEMs. > It is very safe to say that the BMS is preventing just that sort of > problem. > > When I read the article, it was about testing to destruction, not about > how to do safe, long-term charging. Yeah, FUD again. > > I agree that reading history NOW is much more enjoyable, probably > because we aren't reading those "sanitized" history books from high > school. :) > > Cheers! > > On 3/17/20 9:36 AM, Peri Hartman wrote: > > Thanks ! So, is it reasonably safe to say, especially with Tesla, that > > the BMS is preventing the kind of excess rapid charging demonstrated > > in the article ? It seems preposterous that significant damage is > > occurring to EV batteries. (I know it will cause slow, long term > > damage.) In which case, the article is intended to scare people and, > > perhaps, funded by you know who. I looked at the article again, but > > there's nothing ominous in the funding list. > > > > Insomnia: I laugh. When I was in high school, if I had insomnia > > (rarely), I remember I simply opened my history book and was asleep in > > a few minutes. (I really enjoy history, now, by the way.) > > > > Peri > > > > ------ Original Message ------ > > From: "Peter C. Thompson via EV" <ev@lists.evdl.org> > > To: ev@lists.evdl.org > > Cc: "Peter C. Thompson" <pe...@cruzware.com> > > Sent: 17-Mar-20 8:51:08 AM > > Subject: Re: [EVDL] DC charging damages EV packs (?fact or anti-EV-hype?) > > > >> Ah, finally, an area where I am an expert. :) > >> > >> The communication is defined in ISO 15118-2, the transport layers are > >> in 15118-3 (PLC) and 15118-8 (wifi). No one is using the wifi version > >> for DC - only for wireless power. > >> > >> However, nowhere in the spec does the battery temp get sent. There is > >> a warning when the battery is over temp, but that's about it. > >> Most of the time, the job of protecting the battery is the BMS. The > >> BMS tells the EV-side charger how much power it can accept, and when > >> to throttle power. > >> > >> Part of this is that the OEMs think that any info about the battery > >> is confidential information. Which is why SoC is optional, and not > >> always sent to the charger. > >> > >> And yes, you are absolutely correct, Peri: you DON'T want to read > >> these specs... they are a very good cure for insomnia. > >> > >> Cheers, Peter > >> > >> On 3/17/20 7:05 AM, Peri Hartman via EV wrote: > >>> Do you know more, yourself ? I don't really want to study the spec :) > >>> Peri > >>> > >>> ------ Original Message ------ > >>> From: "paul dove" <dov...@bellsouth.net> > >>> To: "Peri Hartman" <pe...@kotatko.com>; "Electric Vehicle Discussion > >>> List" <ev@lists.evdl.org> > >>> Sent: 17-Mar-20 4:52:28 AM > >>> Subject: Re: [EVDL] DC charging damages EV packs (?fact or > >>> anti-EV-hype?) > >>> > >>>> DC fast chargers use HCL defined in ISO 15118-8 Specification. > >>>> > >>>> Volume eight is the physical and data link layer > >>>> > >>>> Sent from my iPhone > >>>> > >>>>> On Mar 16, 2020, at 11:42 PM, Peri Hartman via EV > >>>>> <ev@lists.evdl.org> wrote: > >>>>> > >>>>> I thought the level 3 chargers took into account cell temperature > >>>>> and other conditions. I know, for example, that my almost 10 year > >>>>> old Leaf battery charges at only about 10kw now. Something is > >>>>> communicating. > >>>>> > >>>>> Peri > >>>>> > >>>>> ------ Original Message ------ > >>>>> From: "evln via EV" <ev@lists.evdl.org> > >>>>> To: ev@lists.evdl.org > >>>>> Cc: "evln" <e...@gmx.us> > >>>>> Sent: 16-Mar-20 12:57:21 PM > >>>>> Subject: [EVDL] DC charging damages EV packs (?fact or anti-EV-hype?) > >>>>> > >>>>>> > >>>>>> > >>>>>> https://news.ucr.edu/articles/2020/03/11/fast-charging-damages-electric-car-batteries > >>>>>> > >>>>>> Fast-charging damages electric car batteries > >>>>>> Commercial fast-charging stations subject electric car batteries > >>>>>> to high > >>>>>> temperatures and high resistance that can cause them to crack, > >>>>>> leak, and > >>>>>> lose their ... > >>>>>> https://news.ucr.edu/sites/g/files/rcwecm1816/files/styles/news_article_featured_l/public/2020-03/broken%20Tesla%20battery.jpg > >>>>>> > >>>>>> > >>>>>> > >>>>>> + > >>>>>> https://www.latimes.com/business/story/2020-03-03/southern-california-ev-jobs > >>>>>> > >>>>>> The electric-vehicle industry is thriving in Southern California, > >>>>>> report > >>>>>> says > >>>>>> 2020-03-03 California is already a world leader in the embryonic > >>>>>> electric > >>>>>> vehicle industry but needs more government help to flourish, > >>>>>> according to a > >>>>>> new report from the Los ... > >>>>>> https://ca-times.brightspotcdn.com/dims4/default/b3308bf/2147483647/strip/true/crop/2048x1152+0+0/resize/840x473!/quality/90/?url=https%3A%2F%2Fcalifornia-times-brightspot.s3.amazonaws.com%2F0f%2F14%2F66195340cd40e6cdeb681fd96501%2Fla-1497909600-8tndt61ti7-snap-image > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>> > > _______________________________________________ > 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) > _______________________________________________ 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)
