Was Nissan trying to scare people when they warned against fast charging too often? Just CYA?
- Mark Sent from my Fuel Cell powered iPhone > On Mar 17, 2020, at 9:36 AM, Peri Hartman via EV <[email protected]> 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" <[email protected]> > To: [email protected] > Cc: "Peter C. Thompson" <[email protected]> > 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 ------ _______________________________________________ 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)
