http://evtv.me/2015/11/a-dark-and-sunny-sunday/
Just as I thought he put the story on his web site and it was the pack he uses
to run motors on the bench not installed in a vehicle or balanced in any way.
From: Bill Dube via EV <[email protected]>
To: EVDL Administrator <[email protected]>; Electric Vehicle Discussion List
<[email protected]>
Sent: Sunday, November 8, 2015 11:51 AM
Subject: Re: [EVDL] Rickard's EVTV let the smoke out> overcharged pack fire
blew up
This fellow is the flag bearer for the small anti-BMS movement.
A pack fire (in this instance a pack explosion) was predictable and
unfortunately inevitable. I'm glad that no one was injured.
Pack fires do rarely occur even under ideal circumstances, ("The world
is an imperfect place, screws fall out") but this pack fire was simply a
matter of time, like a ticking bomb simply waiting to go off. As I
understand it, he has had less dramatic pack fires before.
It would be a positive outcome of this tragic incident if this were to
change a few minds in this minority anti-BMS crowd on the need for a
BMS. Unfortunately, the anti-BMS crowd doesn't understand, (or choose to
ignore the advice of the countless experts that /do/ understand,) that
variable self discharge exists in li-ion cells. It is a very real
problem in maintaining battery balance in a high-voltage battery pack.
This is why folks go through the trouble and expense of qualifying and
buying a BMS for each and every high-voltage li-ion battery pack.
Bill Dube'
On 11/8/2015 3:45 AM, EVDL Administrator via EV wrote:
> Not to cause controversy, but do I recall right that Jack Rickard is one of
> the guys who've said that lithium batteries without BMSes never catch fire?
> Or was that someone else?
>
> Certainly that's a claim I've heard, on the EVDL and elsewhere.
>
> David Roden - Akron, Ohio, USA
> EVDL Administrator
>
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