Why Tesla's EV charging system won the race to become America's standard
1–10 of 31 posts
Re: Why Tesla's EV charging system won the race to become America's standard
#2Shame Europe is going to be stuck with the inferior CCS2 forever.
Re: Why Tesla's EV charging system won the race to become America's standard
#3This reads more like a puff piece about Tesla's charging system than a real discussion on /why/ anything matters. And the prose is positive about everything.
I'd love to know what information is "missing" from the J1772 communication protocol, the trade offs on a digital vs analogue "protocol"? Does it require more control circuitry on each side? Are there safety issues with such high power being controlled by a relatively complex microcontroller and protocol? Is the claimed difference even relevant? J1772 has since 2012 allows digital information to be passed using a AC power-line communication standard. J1772 claims to support 240v, so why are they only using numbers showing the "advantage" of the (likely only available in non-residential supplies) 277v compared to 208v? And why aren't the comparing agains the CCS2 standard? Surely that's the most obvious competitor?
The article being so unfailingly positive yet incomplete triggers my "Advert" detector.
Re: Why Tesla's EV charging system won the race to become America's standard
#4Shame Europe is going to be stuck with the inferior CCS2 forever.
[deleted]
Re: Why Tesla's EV charging system won the race to become America's standard
#5Shame Europe is going to be stuck with the inferior CCS2 forever.
NACS doesn't support 3-phase electric power so it is not an option in Europe.
Re: Why Tesla's EV charging system won the race to become America's standard
#6This reads more like a puff piece about Tesla's charging system than a real discussion on /why/ anything matters. And the prose is positive about everything. I'd love to know what information is "missing" from the J1772 communication protocol, the trade offs on a digital vs analogue "protocol"? Does it require more control circuitry on each side? Are there safety issues with such high power being controlled by a rela…
Pretty much nothing was missing from the J1772 protocol, that's why NACS by and large speaks it and CCS1/2.
That's pretty much the answer to all your questions, it's a different plug standard using other SAE standards for communication.
As to why it won out in the US, pretty much solely due to the fact that Tesla is basically the only national charge network that gives a damn about their charge network. It's a crap shoot for basically every other charge location and the actual coverage is pitiful compared to the Tesla network.
Re: Why Tesla's EV charging system won the race to become America's standard
#7Shame Europe is going to be stuck with the inferior CCS2 forever.
NACS doesn't support 3-phase electric power so it is not an option in Europe.
You can run single phase devices off 3 phase supply. Most houses do not have 3 phase supply in Europe. It varies by country, but for example almost no houses have 3 phase supply in the UK. I couldn't find any actual data for other countries but based on Reddit questions etc. it's common in Sweden and Germany, rare in France and Spain.
So support for 3 phase definitely isn't an issue for residential use, where you don't really care about the charging speed. And it isn't an issue for public charging because you'll want to use fast DC charging there.
Re: Why Tesla's EV charging system won the race to become America's standard
#8Earlier quoted context omitted.
NACS doesn't support 3-phase electric power so it is not an option in Europe.
You can run single phase devices off 3 phase supply. Most houses do not have 3 phase supply in Europe. It varies by country, but for example almost no houses have 3 phase supply in the UK. I couldn't find any actual data for other countries but based on Reddit questions etc. it's common in Sweden and Germany, rare in France and Spain. So support for 3 phase definitely isn't an issue for residential use, where you don…
3 phase is a huge deal, especially for commercial fleets.
For public charging DC fast chargers are incredibly expensive, whereas a 3 phase AC charger is pretty cheap and effectively the same price as single phase charger. Delivering more power for the same install cost is valuable since it opens more charging use cases for low cost charging.
I think north america is going to regret not having 1st class support for 3 phase charging baked into all electrified vehicles in the long term.
Re: Why Tesla's EV charging system won the race to become America's standard
#9Re: Why Tesla's EV charging system won the race to become America's standard
#10Earlier quoted context omitted.
You can run single phase devices off 3 phase supply. Most houses do not have 3 phase supply in Europe. It varies by country, but for example almost no houses have 3 phase supply in the UK. I couldn't find any actual data for other countries but based on Reddit questions etc. it's common in Sweden and Germany, rare in France and Spain. So support for 3 phase definitely isn't an issue for residential use, where you don…
3 phase is a huge deal, especially for commercial fleets. For public charging DC fast chargers are incredibly expensive, whereas a 3 phase AC charger is pretty cheap and effectively the same price as single phase charger. Delivering more power for the same install cost is valuable since it opens more charging use cases for low cost charging. I think north america is going to regret not having 1st class support for 3…
> For public charging DC fast chargers are incredibly expensive
Maybe so but 3 phase AC is already the minority, and we've barely started the transition to electric cars.
Look at https://www.zap-map.com/live
Orange is 3 phase AC. It's about as popular as single phase, and way less popular than DC.
They just opened a brand new transport hub near me with 100 charging points. All single phase.
I just don't think it's a big deal. I don't think people really care about the difference between 7 kW (takes hours to charge) and 22 kW (takes hours to charge).
Maybe people don't care about the hilarious clumsiness of the plug either; I don't know.