Rich, Thanks for your useful information that leads me comfortable now. The symposiums contains lots of interesting information. The best news is the problem is being dealt and hope the problem is resolved very soon.
Best regards, Scott From: Richard Nute [mailto:ri...@ieee.org] On Behalf Of rn...@san.rr.com Sent: Friday, November 30, 2007 3:18 AM To: 'Scott Xe'; emc-p...@ieee.org Subject: RE: Mobile phone killed one person in Korea 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 > - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
