General > General Technical Chat

EV-based road transportation is not viable

<< < (204/236) > >>

PlainName:

--- Quote ---could do say 650-700 miles with one 10 minute stop
--- End quote ---

I wish I could manage that!

tom66:

--- Quote from: nctnico on February 18, 2023, 12:28:50 am ---Why would you like to have extra noise in the cabin? To me the idea is insane. Sound doesn't make a car go faster.  My previous car had a rather loud diesel engine. I installed over 25 sqm of thick, sound proofing rubber mats in it to lower the noise a bit. I took the entire interior + lining out and put the rubber mats underneath.

--- End quote ---

It's nice to have it sometimes.  Driving through a nice road with lots of twists and turns keeping up with the flow can be quite fun - but then again I enjoy that type of driving and the auditory feedback is part of that.  It's also nice that it makes the noise inside the cabin but outside sounds just like a regular car, so there's no antisocial factor to it like cars with loud exhausts which I can't stand.

But you can turn it off easily.  It's an electric motor in a vibrating resonant chamber, in the electric and "normal" modes it makes no sound.

Marco:

--- Quote from: karpouzi9 on February 18, 2023, 07:28:40 am ---You've made up a straw man, sadly.

--- End quote ---
We're just having a flowing discussion, someone brought up even faster than current fast charging could change the situation and I posit that might run into thermal limits as well as requiring the charging stations to charge from batteries.

--- Quote ---EVs today don't need 10 MW of charging power and 100 kW of cooling. What would even be the point of charging a 60 kWh battery in 35 seconds rather than 10 minutes?
--- End quote ---
EV owners self select, once people are pushed into EVs they will become ornery when it ill suits their living arrangement ... don't want too many ornery people.

--- Quote ---Changing out fluids in car battery cooling systems is hard enough as is

--- End quote ---
You wouldn't pump fluid through the car cooling/heating system, the system would have a heat exchanger to the loop from the charging station.

Then again, maybe I'm misjudging how much temperature the new battery chemistries can stand. Propylene glycol has a high boiling point, so there is plenty of room to push heat into them from that respect.

Marco:

--- Quote from: tom66 on February 18, 2023, 10:16:05 am ---Yeah I heard this idea before that we'll have 2-3MW+ charging and I don't buy it.  You don't reasonably need more than 250kW discharge, so if you had that much charge current, your battery, all of its current collectors, busbars, main wiring, contactors etc. would have to be oversized for that charging current.
--- End quote ---

You can do the same thing as Tesla is planning to do in the charging cable/connector to keep it lithe, immerse most of it in flowing coolant.

TimFox:
My basic question about "viability":
The market for EVs continues to grow steadily, due to regular market forces and government subsidies.
What will stop it, if it be unviable?

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod