Hello Scott:
The mobile phone is not the device that explodes.
The lithium-ion battery within the mobile phone
is the device that explodes.
The battery explodes because of a fault inside
the battery. A fuse cannot protect against such
a fault.
The root causes of the explosions have been
identified. The root cause is different for each
different battery manufacturer because each
manufacturer uses different mechanical constructions
and different assembly techniques.
The root causes of Li-ion battery failure have been
the subject of several papers presented to the IEEE
Product Safety Engineering Society Symposium in 2006
and 2007. This is a public forum; if you had
attended these Symposia, you would have a much better
idea of the Li-ion battery faults that lead to
explosions. We expect additional papers on this
topic for the 2008 Symposium. You should plan on
attending.
http://ewh.ieee.org/soc/pses/symposium/index.html
The IEEE is working on a safety standard for Li-ion
batteries. I'm sorry, but I don't have any details
of their work.
The root causes of Li-ion battery explosions are
certainly not secret! All of the reputable battery
manufacturers understand the failure modes of their
batteries and have taken steps to prevent such
failures in their current production.
Best regards,
Rich
Richard Nute
Product Safety Consultant
San Diego
Tel, FAX: +1-858-592-2620
Mobile: +1-858-776-1618
e-mail: ri...@ieee.org
> -----Original Message-----
> From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf
> Of Scott Xe
> Sent: Thursday, November 29, 2007 8:27 AM
> To: emc-p...@ieee.org
> Subject: RE: Mobile phone killed one person in Korea
>
>
> Such report scares the public very much regardless of the
> truth or not. At least, no one in the world says there is
> evidence that the mobile phone will kill the people in normal use.
>
> Nowadays, almost everyone in city carries mobile phone like
> carrying your walnut. The risk is high as compared with
> other electronics items. Although we have so many accidents,
> we still cannot locate the root cause of explosion and/or
> killing people or the root cause cannot be disclosed due to
> the consideration of public concern. It always says the
> cause of explosion may be due to the fake battery that is not
> equipped with a fuse. Is it a real cause? In last one to
> two years, Apply, Sony, Toshiba, Dell, etc. recalled their
> batteries. All have no built-in fuse?? What is the real
> cause of the problem? Probably, it is now a top secret!!
>
> Scott
>
-
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