[Caevlist] Fwd: Tesla Module Fire

[Michael Jeffers]

...also, a couple more links

http://evworld.com/news.cfm?newsid=23272
https://altairnano.com/products/70-amp-hour-cell/

Regards,

Michael

Sent from myPhone

Begin forwarded message:

> From: Michael Jeffers <michael.toye.jeffers at gmail.com>
> Date: November 23, 2018 at 7:00:30 PM PST
> To: gburket at peak.org
> Subject: Re: [Caevlist] Tesla Module Fire
> 
> Hey Glenn,
> 
> I’m rather new to the community, but I feel I may have some input on the subject. Recently I stumbled across Lithium Titanate Oxide cells (LTO’s). Now they don’t have the same power density and nominal voltage as many other commonly used cells, but I could see them being very beneficial if utilized correctly. 
> From my understanding they are rather safe compared to other Li-ion chemistries and their charging abilities are like nothing I’ve seen. Some are able to charge at the same rate they can discharge, while maintaining a lifespan that exceeds other common chemistries. I could see this being highly beneficial for not only quick charges, but being very efficient for regenerative braking. Possibly even eliminating the need for traditional friction-based braking mechanisms. 
> The challenge I’m running into however is finding a BMS that is up to the challenge.
> 
> https://youtu.be/eAUYbSDEy6I
> https://www.ev-power.eu/LTO-Tech/
> http://www.kokpower.com/lithium-titanate-batteries-lto_c11
> 
> Regards,
> 
> Michael
> 
> 
> Sent from myPhone
> 
>> On Nov 23, 2018, at 4:16 PM, gburket at peak.org wrote:
>> 
>> Hai-Yue, If you know that safer batteries are coming, could you just wink or something?
>> 
>> Glenn
>> 
>> 
>> From: "Hai-Yue Han" <haiyuehan at gmail.com>
>> To: "Glenn Burket" <gburket at peak.org>
>> Cc: "Corvallis EV CLub" <caevlist at caevclub.org>
>> Sent: Friday, November 23, 2018 3:59:58 PM
>> Subject: Re: [Caevlist] Tesla Module Fire
>> 
>> Yeah, it definitely looked like even the mechanical containment of the module was not there either; there are multiple layers of physical containment to prevent things like this regardless of BMS.
>> 
>> Safety third! ;)
>> 
>> Hai-Yue
>> 
>>> On Fri, Nov 23, 2018, 3:08 PM <gburket at peak.org wrote:
>>> Hi fellow EVers,
>>> 
>>> Happy Thanksgiving and here's an early holiday gift for those of us working or thinking of working with Tesla Battery modules:  https://www.youtube.com/watch?v=WdDi1haA71Q  Every time I see a new one of these videos, I keep redesigning a stronger and stronger module containment system. Whatever I come up with is definitely going to have to involve some real-life destructive testing. Or, should I wait until safer, higher energy density batteries come along? Granted, Richard and his buddies didn't use a BMS or active cooling. However, the consequences of this type of fire even though it might be remote when a BMS and active cooling are used, are so dire it can't be ignored.
>>> 
>>> Stay Safe, Glenn
>>> 
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