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I'd love to see this technology being incorporated into Tesla's batteries. With super-fast and long lasting charges their cars might become viable in countries
by alexjeffrey 14y ago
I'd love to see this technology being incorporated into Tesla's batteries. With super-fast and long lasting charges their cars might become viable in countries where charging stations are either incredibly rare or nonexistent.
- podperson 14y agoCountries with poor infrastructure and handy sources of insanely high wattage power who can afford $50,000 sedans? Which countries would those be?
- alexjeffrey 14y agoI'd hardly equate lack of abundant electric car chargers with poor infrastructure. The example I was thinking of is the UK where I live, where electric cars aren't as common as in SF or the east coast. note, I didn't downvote your comment.
- podperson 14y agoFair enough but the basic point stands - a fast charging facility would be harder to set up than a Tesla "supercharger" (it would, in essence, need to use capacitors to provide the necessary power and would be limited by its available power.
- jimzvz 14y agoWhy specifically tesla and not just electric cars in general?
- gus_massa 14y agoI searched a little, but the information is confusing. The superchargers (apparently) use 90kW/480V=~190A. I want to highlight this: 190A!!! A usual home connection can handle only up to ~10A, so 190A is a lot of current. To handle this you must use very thick wires. To charge faster you need move voltage or handle more current, probably you will need even thicker wires and to be careful with the safety measures. Additionally, this experiment use only in a tiny lab sample. To increase the size and make a big model for a car, a lot of technical details will appear, for example how to handle all the heat that the battery produces during the charge / discharge cycles.
- frankus 14y agoA typical new house in the US is wired for a 200A 240V circuit, or about 48kW. By contrast the energy flux of a garden-variety gas pump is in the tens of megawatts.
- lostlogin 14y agoIs that at the fuse box or the power point on the wall? Sorry if this is a silly question, it's just that here in NZ it's nowhere near that at the wall as the fuses are 10 amp ish.
- gus_massa 14y agoThe 200A are at the fuse box (in new houses, old houses may have less). The wall sockets usually have 110V-15/20A connections. But there are some especial sockets with 240V-30/50A for special applications, like clothes dryers and electric ovens.
- lostlogin 14y agoIn our old house some genius used paper clips instead of fused wire in the (very old) fuse box. Not sure how I didn't die when I draped and extension lead in a puddle and got a shock. After I recovered I looked in the fuse box to see why the fuse didn't blow and found one fat paper clip over the gap. I'm not sure what current the box took, but I'm sure glad it wasn't 200Amps.
- kefka 14y agoSeems pretty simple to me: You create a grid for your house, so it will always have electricity. You trickle charge a rack of graphine Supercaps for your house using mains. You dont need to send that power all at once. The standard devices to handle passing from mains to battery should be able to be used.
- herdrick 14y agoI think there's little issue with heat, as a major advantage of capacitors is efficiency in charging and discharging.