Car Magazine Article
Thread Starter
Rennlist Member
Joined: Aug 2005
Posts: 5,683
Likes: 1,866
From: PNW
Car Magazine Article
Nordschleife Master
Joined: Jun 2011
Posts: 6,490
Likes: 4,885
From: Santa Cruz, CA
22 kW max L2 charge rate goes beyond the current SAE J-1772 standard and is more than a 100 amp circuit in most US homes - I'll be intrigued to see what shakes out here for home charging solution.
Nordschleife Master
Joined: Jun 2011
Posts: 6,490
Likes: 4,885
From: Santa Cruz, CA
more articles…
https://www.yahoo.com/news/porsche-6...132523535.html
"Porsche concedes that, while bringing an EV with an 800-volt charging system to the market is feasible, it’s a little bit useless unless there’s a vast network of 800-volt charging stations that it can be plugged into. Blume said Porsche is currently talking to government officials in Europe, the United States, and China about investing in 800-volt stations. For its part, Porsche is already testing the technology in Berlin. This firm is also working on installing six test stations at its American headquarters in Atlanta."
Tesla has a huge lead in DC Fast charging…one that is not going to be easily overcome…
https://www.yahoo.com/news/porsche-6...132523535.html
"Porsche concedes that, while bringing an EV with an 800-volt charging system to the market is feasible, it’s a little bit useless unless there’s a vast network of 800-volt charging stations that it can be plugged into. Blume said Porsche is currently talking to government officials in Europe, the United States, and China about investing in 800-volt stations. For its part, Porsche is already testing the technology in Berlin. This firm is also working on installing six test stations at its American headquarters in Atlanta."
Tesla has a huge lead in DC Fast charging…one that is not going to be easily overcome…
Instructor
Joined: Mar 2006
Posts: 233
Likes: 18
From: Santa Monica, California
I guess you could have a Tesla battery wall type of device to fill up on current when not in use, and then have it rapidly charge your car at 800 volts after it changes the voltage.
Nordschleife Master
Joined: Jun 2011
Posts: 6,490
Likes: 4,885
From: Santa Cruz, CA
yes 240 volt single phase is typical residential install - hence my interest in how Porsche is going to support 22 kW chargers w/J-1772 standard in homes - the most J-1772 supports is currently 240 volts@80 amps for 19,200 watts or 19.2 kW…
I have also thought about having a DC chargers that "dumps" from a battery -but having 20-30 kWh of battery storage on site is expensive…and the Mission E's battery for 300 mile range is going to be AT LEAST 75 kWh of storage for 300 mile range, probably more like 90 or 100 kWh…having that much storage at home would be costly
however a 15 kWh battery for normal "daily" use would be nice - you could recharge your daily use in like 20 minutes - but I don't see the need in the home - my car is in my garage for at least 8 hours and can charge over night.
I have also thought about having a DC chargers that "dumps" from a battery -but having 20-30 kWh of battery storage on site is expensive…and the Mission E's battery for 300 mile range is going to be AT LEAST 75 kWh of storage for 300 mile range, probably more like 90 or 100 kWh…having that much storage at home would be costly
however a 15 kWh battery for normal "daily" use would be nice - you could recharge your daily use in like 20 minutes - but I don't see the need in the home - my car is in my garage for at least 8 hours and can charge over night.