Griffith Hack Clean & Sustainable Technologies


29 patent applications filed for Li-ion battery that does not explode by Justin Blows
November 16, 2009, 7:30 am
Filed under: Feature | Tags: , , ,

According to this report, the Industrial Technology Research Institute (ITRI), Taiwan’s national research organization has applied for 29 patents in the United States, Taiwan, Korea, China and Japan for a new technology to prevent lithium-ion batteries from catching fire or exploding.

This problem is seen by many a reason not to use the technology in electric vehicles, for example.

Apparently, from 2003 to 2005 more than 300 incidents occurred involving lithium-ion laptop and cell-phone batteries overheating or catching fire. Many of the incidents involved personal injury.

This potential problem with lithium-ion batteries is multiplied by the thousands in vehicles. In the case of Tesla Motors’ car, for example, almost 7,000 batteries are packed behind the passenger compartment to power the car.

When lithium-ion batteries develop internal shorts they can quickly heat up to as much as 500 degrees centigrade (932 degrees Fahrenheit) and catch fire or explode.

The invention sits between the positive and negative sides of the battery and when the battery hits 130 degrees centigrade (266 degrees Fahrenheit), it transforms from a porous material to a film and shuts down the reaction.

Justin Blows

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