Hybrid-electric car -- are the batteries really safe in an emergency? What about "Thermal Runaway"?
Ok, so I've been doing research and I can't find much information about this topic. Dealers say "of corse it's safe" but that doesn't explain how or why the safety works. I know they have measures to deal with the high voltage and current - supposedly the cables are bright orange to indicate they shouldn't be cut through.
My concern is if there's a fire or other disaster, maybe after a collision. I know with Lithium based batteries used in electronics (laptop-computers, iPods, phones, etc) if they are heated beyond a certain point, they go into thermal runaway and can cause multiple explosions, and severe injury to anyone nearby.
What stops a Hybrid's battery pack from going into Thermal Runaway?
Nano-Li batterires designed for vehicles are designed to fail safe
see the video of the killacycle crash http://www.killacycle.com
The batteries are nomally placed under the floor between the front & back wheels to inprove the weight distribution, see Tango handling http://www.commutercars.com but this also gives a lot of protection in a crash (the Tango meets F1 standards)
PS Existing hybrids use NiMH batteries
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