>-----Original Message-----
>From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] 
>Sent: 27 April 2006 18:17
>To: Microcontroller discussion list - Public.
>Subject: Re: [OT] opinions about Li-battery cars on CNN ?
>
>
>
>> The *major* problem with Li-Ion cells in vehicles is the 
>"venting with 
>> flame" bit, and one of the reasons we don't see any mass produced 
>> vehicles with Li-Ion.  You can crush and puncture a Ni-Cd 
>and an NiMH 
>> with some overheating and limited possibility of venting with flame, 
>> but if you crush or puncture a Li-Ion you very frequently 
>get a little 
>> flame thrower.  They can even overheat and possibly vent 
>when too much 
>> current is being drawn out of or charged into it.
>
>How about crushing a gas tank ? Or a propane bottle ?

You could crush or pierce either without necessarily causing an explosion as you still need a spark to ignite the fuel (though I guess liquid propane expands fairly quickly when the pressure is released).  Piercing a Li-Po is quite likely to make it go pop if my RC Heli experiences are anything to go by...

Regards

Mike

=======================================================================
This e-mail is intended for the person it is addressed to only. The
information contained in it may be confidential and/or protected by
law. If you are not the intended recipient of this message, you must
not make any use of this information, or copy or show it to any
person. Please contact us immediately to tell us that you have
received this e-mail, and return the original to us. Any use,
forwarding, printing or copying of this message is strictly prohibited.
No part of this message can be considered a request for goods or
services.
=======================================================================

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist