Re:A Room-Temperature Superconductor? New Developments
by qsdf38100 on Tuesday August 01, 2023 @06:37PM
(#36964204)
It's implied by instant charging. The power would be the battery capacity divided by 0.
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Re:A Room-Temperature Superconductor? New Developments
by sharlos201068 on Tuesday August 01, 2023 @07:48PM
(#36964907)
No one means literally zero time to charge. A couple seconds compared to minutes or hours is virtually instant for practical purposes.
Re:A Room-Temperature Superconductor? New Developments
by qsdf38100 on Tuesday August 01, 2023 @10:13PM
(#36966130)
Let me keep being pedantic and notice that a typical phone capacity of 10000 Joules divided by 2 seconds is still 5 kW of power, so not a trivial amount. I'd think 30 seconds (333 Watts) is more realistic.
Re:A Room-Temperature Superconductor? New Developments
by Denote6737 on Wednesday August 02, 2023 @02:28AM
(#36967673)
If we can even get the charge times for EVs down to the minutes to take to refill ICE tanks. It will basically remove the range anxiety problem.
Re:A Room-Temperature Superconductor? New Developments
by mytailorisrich on Wednesday August 02, 2023 @02:51AM
(#36967819)
Best way to get EV 'refill' time to minutes is battery swapping. This already exists commercially, see Nio in China, and it apparently takes as little as 3 minutes.
Similar speeds for charging are impractical because of the power spikes required even if the battery could take it.
You cannot have instant charging, that's not pedantic, that's the discussion, and in any case there is a practical limit to how fast it can happen for similar reasons.
All the work being done on smart home EV chargers that automatically schedule the right time (controlled by grid) to charge overnight are because even at current speeds this wreaks havoc on the electrical subsystems and grid if everyone plug their EVs in at the same time in the evening...
Re:A Room-Temperature Superconductor? New Developments
by Denote6737 on Saturday August 12, 2023 @01:52PM
(#37102575)
I personally don't have a problem with the current 30 minute charge. If you drive you should stop for 20 to 30 minutes every couple of hours.
What we need is sufficient infrastructure for ev charging.