Girl sits on Phone in Back Pocket and starts Fire just as Damaged Batteries start Fires in Electric Cars

Posted by PITHOCRATES - February 2nd, 2014

Week in Review

Lithium-ion batteries are a wonder.  But they can be temperamental.  Which you can expect when you put highly reactive chemicals together.  Which is the price of higher energy storage densities.  Danger.  To make that charge last longer in the batteries powering our electronic devices.  And they can only do that by a chemical reaction that produces heat.  Boeing had a problem with their lithium-ion batteries that nearly caught a couple of their new Dreamliners on fire.  Resulting in an FAA grounding of the entire fleet until they found a way to make their batteries safer.  But it’s not just big lithium-ion batteries that can burst into flames (see iPhone catches fire, teen girl burned by Chris Matyszczyk posted 2/1/2014 on CNET).

An eighth-grader in Maine is sitting in class when she hears a pop. Then she notices smoke coming from her back pocket…

The culprit is said to have been her iPhone. Images suggest it had caught fire…

The division chief of the local emergency medical services, Andrew Palmeri, told Seacoast Online that the phone’s battery had “shorted out.” He suggested that the phone had been crushed in the teen’s back pocket. Local fire services are investigating…

Cell phones of whatever brand do catch fire. iPhones have caught fire on planes, just as Droids have exploded in ears.

So lithium-ion batteries can be dangerous.  Despite being the wonders they are.  For these chemical reactions are powerful.  And need to be confined perfectly.  But if you sit on a cell phone you can damage the confinement of those chemicals.  Causing a fire.  Just as accidents in electric cars have resulted in battery fires that have totaled these cars.  Or a faulty charging circuit started a fire overnight while charging in an attached garage.  Starting the house on fire.  Or nearly started a plane on fire.

The greatest hindrance to electric car sales is a thing called range anxiety.  Will I have enough charge to get home?  The answer to this problem is, of course, increasing the charge available in these cars.  Typically with bigger and more powerful batteries.  Which can burn the car to a crisp after an accident damages the battery.  Or debris on the roadway is thrown up by a tire into the battery.  Things that won’t total a gasoline-powered car if they happen.  Because gas is a high-density energy source.  Like these lithium-ion batters.  But it takes a lot more abuse to the gas tank to get it to start a fire.  Which is why electric cars will not replace the gasoline-powered car.  As they provide a far greater range and are safer.  And until the electric car can out do the gasoline-powered car on these two points the electric car will remain a novelty.

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