Do you think adoption of EV will be success or failure? Will eventually became replacement for combustion engine car and become mainstream?

There improvement of efficientcy on internal combustion engine seems reach it bottleneck after nearly hundred years of developement,dictated by heat loss and friction between machanical part as there only that much can do to squeeze more power per drop of fuel you burn by adding more complex technology like turbo charge,direct injection,variable valve,hybrid system that increase air to fuel ratio yet the return is diminishing after add on hundreds of complicate part to archive.
EV on other hand is still on early stage of development much more room of improvement to play on many aspect like substitute of battery material with higher energy density,solid state battery or different chemical compound capable hold charge with less eviroment impact.Another problem is the notion of buying ev to offset fuel cost in long run is slap in the face by it car value depreciation which is far worst than ICE counterpart lack of charging infrastructure cause the range anxiety of ev owner had to take every long distance trip with meticulous plan to cross charging station include route ahead.At begining when the first ev is launch i really like EV for it simplicity over ICE but over recent years as it more become popular all the fire accident during charging,hard to extinguish after caugh fire,massive depreciation problem im bit dissapoint with EV yet i really hate complexity modern ICE.

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Lanyx · 46-50, M

TL,DR.

This electric car thing is a fad. It will die out, and the internal combustion engine will live on.

UsernameAlreadyInUse · 26-30, M

@Lanyx As much as i prefer ev,i do think it will fail.The upfront price and charging port is not feasible for majority of those living in erected property

Lanyx · 46-50, M

@UsernameAlreadyInUse I am an electonic engineer with 20 years of experience. There is no way to overcome the charge time issue, unless there is battery swap. Battery swap has its own set of issues.

I worked for a company that built batteries for vehicles like forklifts and Vespa-style motorcycles. It was a tiny entity in Europe). I have seen it from the technical side.

zonavar68 · 56-60, M

@Lanyx Exactly - if you want to charge faster you have to supply more electricity to the charging device, but that's not all. The battery module in the vehicle has to be capable of accepting a higher rate of charge, and the electronics managing the process have to be able to deal with it and all the risks of high-energy flows into inherently dangerous battery cells.

Plus if you have a 1 MW power feed to a bank of 10 chargers, and one car is hooked up, that car might be to get 250 to 350 KW, but if 10 cars are hooked up, the average that each car can get is only 100 KW.

That doesn't take into account losses (I'd average that at 10 percent in total), so a 1 MW feed is typically only 900 KW once all the energy losses are considered, so that's only 90 KW delivered to each of the ten vehicles, and because of those own vehicles electrical losses it could only be putting 80 KW actually into the batteries.

So once the total power capacity of the main feed is reached, the time to charge each connected vehicle goes up. And for the charging site operator, if it gets charged for electricity used on a demand basis, that cost has to get recovered from owners of vehicles that want to charge at that charging operator's sites to make the whole business of running EV charging sites profitable.

Anytime there is a profit motive, someone else has to make a loss, and that's the EV owners getting slugged to cover all the costs of the charging site operator.

Lanyx · 46-50, M

@zonavar68 I have worked in that industry for a year, so I know how it works. By writing 1mW (one milli-watt) I'm assuming you meant to write 1MW (one Mega-watt). The fastest you can charge is 5C: (5x battery capacity, or in 12 minutes. However, this is very, very bad for the battery's health. You then need to worry about thermal management as Lithium batteries can generate a positive feedback loop where heat generates more heat. Once they catch fire, its hyper difficult to extinguish them, as they produce all 3 sides of the fire triangle themselves.

I would recommend charging for 5 hours at 0.2C. 1C is the ampere-hour rating of the battery, and we are talking about current here.

zonavar68 · 56-60, M

@Lanyx Yes I'm aware that fires where the lithium battery material is rapidly decomposing due to heat being over about 250 deg C result in the cells feeding the fire with oxygen (and extremely flammable and toxic gases) which is why they burn so hot (2000+ dec C), and cannot be extinguished by smothering.

The only ways to stop the fire are cool it to stop the battery decomposition from happening, or let it burn itself out. I had heard someone mention '5c' in another discussion elsewhere. I was a volunteer firey for 21 years until about 2 years ago and while I had not seen an EV fire I'd seen plenty of normal car fires and they are fairly easy to deal with. At the time we were getting regular training updates about EV fires involving the battery module though.