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So, either that battery is very small or it needs a very powerful charging station to get a full charge of 100 kWh completed in such a short time. This means,

So, either that battery is very small or it needs a very powerful charging station to get a full charge of 100 kWh completed in such a short time. This means, if this was supposed to be commercialized, the country would need to install thousands of charging stations with half a megawatt power. I don’t think this is ever going to happen. Especially, with western countries being slow in building new nuclear power plants.

gambiting 4y ago
That's the other thing that people forget when talking about this. To put 100kWh of capacity into a battery within one minute, you'd need to have a charger capable of delivering 6 megawatts. That's the output of a small hydroelectric power plant. I also would love to see the cables and cooling solution used for such a charger.
- pengaru 4y ago
  If you have a battery on hand ready to suck down that power in EVs, all you have to do is contact whoever managed such a feat to provide your charging facility with the battery cache. And you don't have to recharge your cache off the grid/solar/wind/whatever at the same rate you charge the cars of waiting customers. You just need space for a big enough pile of batteries. Last I checked gas stations were rather bursty around rush-hours. Worst case the charge rate degrades after exhausting the cache. There will always be lulls between the thundering herds to allow filling it all back up. Is it really all that impossible to imagine? Maybe the gas stations of the future are battery towers.
- mschuster91 4y ago
  6 megawatts is 60 amps on a 100 kV line or 300 amps on a 20 kV local distribution line. Don't need a thick wire to do that, train overhead lines carry more power than that.
  - gambiting 4y ago
    Yeah but the car isn't taking 100kV - the battery packs nowadays use 400 or 800V. Even at 800V that's 7500 amps. Also the power needs to be converted from AC to DC too, and that's not a 100% efficient process either.
Taniwha 4y ago
doesn't have to have that much instantaneous system wide capacity: could be giant super caps, secondary batteries etc(charged overnight or during peak solar times depending on where you are) - or it might share the peak capacity across the whole system (some smarts limiting things if everyone in a larger area charges at the same time - though that also means upping the delivery to individual sites)

gambiting 4y ago

That's the other thing that people forget when talking about this. To put 100kWh of capacity into a battery within one minute, you'd need to have a charger capable of delivering 6 megawatts. That's the output of a small hydroelectric power plant. I also would love to see the cables and cooling solution used for such a charger.

pengaru 4y ago
If you have a battery on hand ready to suck down that power in EVs, all you have to do is contact whoever managed such a feat to provide your charging facility with the battery cache. And you don't have to recharge your cache off the grid/solar/wind/whatever at the same rate you charge the cars of waiting customers. You just need space for a big enough pile of batteries. Last I checked gas stations were rather bursty around rush-hours. Worst case the charge rate degrades after exhausting the cache. There will always be lulls between the thundering herds to allow filling it all back up. Is it really all that impossible to imagine? Maybe the gas stations of the future are battery towers.
mschuster91 4y ago
6 megawatts is 60 amps on a 100 kV line or 300 amps on a 20 kV local distribution line. Don't need a thick wire to do that, train overhead lines carry more power than that.
- gambiting 4y ago
  Yeah but the car isn't taking 100kV - the battery packs nowadays use 400 or 800V. Even at 800V that's 7500 amps. Also the power needs to be converted from AC to DC too, and that's not a 100% efficient process either.

Taniwha 4y ago

doesn't have to have that much instantaneous system wide capacity: could be giant super caps, secondary batteries etc(charged overnight or during peak solar times depending on where you are) - or it might share the peak capacity across the whole system (some smarts limiting things if everyone in a larger area charges at the same time - though that also means upping the delivery to individual sites)