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The Chinese language Automobile Collision Restore Technical and Analysis Middle and Joyson Electronics have revealed a really uncommon resolution to a severe concern.
At an occasion earlier this month, new expertise was demonstrated on Chery’s iCar 03 that may see a car’s high-voltage battery ejected 3-6 metres away inside a second of thermal runaway being detected.
It’s ejected from the car utilizing a fuel generator, a lot in the identical approach as an airbag works, with the thought to get the battery away from car occupants earlier than it catches hearth.
Within the demonstration video, shared throughout Chinese language media together with cnBeta, the battery is ejected with a bang into a close-by pit after which shortly shrouded.
Nevertheless, there are of course considerations over the high-speed ejection of a battery weighing probably a number of hundred kilograms.
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It’s doable that, ought to this expertise come to manufacturing automobiles, it’ll be accompanied by cameras and radar to make sure a battery isn’t ejected at velocity into neighbouring pedestrians and automobiles.
Neither the Chinese language Automobile Collision Restore Technical and Analysis Middle nor Joyson Electronics have printed any extra details about this expertise, so it’s unclear whether or not there are any plans for it to be supplied to automakers.
EV fires could be attributable to battery cells overheating after their cathodes and anodes make contact and brief circuit, producing warmth which spreads to surrounding cells, creating a series response virtually unattainable to reverse – with temperatures rising to about 1000°C. That is what’s known as thermal runaway.
Based on Australian organisation EV FireSafe, although, EV battery fires are uncommon.
Its analysis discovered there have been a complete of 393 verified EV traction battery fires globally between 2010 and June 30, 2023, although it notes this knowledge isn’t exhaustive.
