- This topic has 8 replies, 3 voices, and was last updated 2 years, 5 months ago by
kezo.
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- November 12, 2023 at 10:00 am#243170
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.
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- November 12, 2023 at 12:14 pm #243201
Untill there are at least equal BEV’s and ICE on our roads, I don’t think we will see the full picture of whether one is better than the other. However, a greater number of manufacturers are turning to LFP batteries which are known to be less of a risk.
As of 2019, there were 35 million licensed vehicles on our roads, of those 166,000 were electric vehicles. In the same year Bedfordshire Fire and Rescue Service, said some 1898 fires in 2019 were from petrol and diesel vehicles, 54 from EVs!
November 12, 2023 at 12:25 pm #243209I don’t remember years ago (20 – 50) so many cars going on fire or were they not reported then, it seems like we are seeing two or three a week being reported in the news.
November 12, 2023 at 12:51 pm #243217
IanI don’t remember years ago (20 – 50) so many cars going on fire or were they not reported then, it seems like we are seeing two or three a week being reported in the news.
That’s is simply down to the fact that in they days there were very little electrical components to cause fires.
All vehicles ICE or EV have a large amount of cheaply made electrical components
November 13, 2023 at 3:53 pm #243368
RichardI wouldn’t trust MSN to tell me the sky was blue and waters wet….
Every fire involving an EV is treated as some kind of sign of the apocalypse. An EV can get set on fire via arson, lit cigarette etc, house fire spreading, car next to it, even lightning or a good old 12v electrical fault yet every fire is a sign of how dangerous lithium batteries are….
EV batteries are encased in metal and sealed up. I’ve fuel tanks are usually plastic and exposed.
Yes you can get a battery failure cause a fire same as a diesel Land rover can catch fire via a 12v fault and once the diesel catches it’ll burn hellishly.
Fact is every EV fire gets reported because at least partly there’s an agenda from some and because they’re popular so it’s deemed public interest.
Hate to bring up a bad subject but we didn’t hear about many other terrible things that people do to each other in the world decades ago but now partly due to technology, partly due to societal change and partly due to being encouraged to report things there’s often a report of something atrocious in the news every day.
It’s a similar thing with EV fires. Few decades ago a 30 second satellite broadcast from the US to the UK cost tens of thousands of pounds now it’s essentially free. News travels fast, news that furthers an agenda travels even faster
November 13, 2023 at 3:53 pm #243369
RichardOn an aside I just wrote of my EV and it didn’t catch fire, explode, burn for days despite airbags deploying etc
November 13, 2023 at 4:22 pm #243379On an aside I just wrote of my EV and it didn’t catch fire, explode, burn for days despite airbags deploying etc
OOPS! What EV did you have?
Its the potential of Thermal Runaway, which LFP batteries are less prone to.
November 13, 2023 at 6:33 pm #243408
Roger WikcoRemember the same doom and gloom merchants were banging on about the horrors of mobile phones exploding?
You have much m8re chance of seeing an ICE car or lorry or bus catch fire than BEVs
November 13, 2023 at 7:17 pm #243416Remember the same doom and gloom merchants were banging on about the horrors of mobile phones exploding? You have much m8re chance of seeing an ICE car or lorry or bus catch fire than BEVs
Wasn’t that around 2014 when Iphones were overheating and exploding apple had to recall some. Then there were phones overheating!
All batteries have the potential to explode if the circumstances are right, based on their chemistry. Its just Lithium especially chemistry’s like NMC are at a far greater risk than LFP batteries. Good battery management is key as is not rapid charging when batteries are cold, unless the battery has the facility to precondition prior to charging.
Thermal runaway is a process that is accelerated by increased temperature, in turn releasing energy that further increases temperature. Thermal runaway occurs in situations where an increase in temperature changes the conditions in a way that causes a further increase in temperature, often leading to a destructive result. It is a kind of uncontrolled positive feedback.
Thermal runaway, isn’t specific to EV batteries, rather they fall within a catorgory, for example it can happen in a number of scenarios where the above conditions are met – In chemistry and chemical engineering, thermal runaway is associated with strongly exothermic reactions, accelerated by temperature rise. In electrical engineering, thermal runaway is most associated with increased current flow and power dissipation. Thermal runaway can even occur in civil engineering, such as when the heat released by large amounts of concrete curing is not controlled. Even the stars in the Sky, it is possible to get runaway nuclear fusion as seen in the Nova and super Nova.
All it needs is the right conditions to be met, no different to flamable liquids under the right conditions will go boom!
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