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from the cars-start-on-fire-all-the-time-anyway dept.
Samsung has announced a new battery cell for electric vehicles that could enable 20 minute fast charging. The company plans to get that time down to 5 to 10 minutes:
Samsung's SDI battery subsidiary announced a new battery cell designed for use in electric vehicles that offers improved density to manage a max range of up to 372 miles on a full charge, with a quick charge capacity that will help it regain 310 miles or so of charge on just 20 minutes of charging. Unveiled at the North American International Auto Show for the first time, the new battery tech come with a 10 percent decrease in the number of units and weight required vs. current production battery units made by Samsung SDI.
Mass production isn't set to begin until 2021, but the tech should arrive in time to supply the first crop of autonomous cars, which are also targeting street dates sometime within that year from a range of manufacturers. EV and self-driving are tied closely to one another, since both are crucial components for operating the kind of on-demand ride-sharing fleets planned by Ford, among others.
Also at Engadget. Press release at Business Wire.
Samsung's SDI division is the same company that made the batteries used in the Galaxy Note 7 as well as the upcoming Galaxy S8. Samsung will reportedly reveal the cause of the Galaxy Note 7 overheating issues later this month, but the batteries are not expected to be the culprit.
(Score: 2) by VLM on Wednesday January 11 2017, @05:44PM
Whoops AC forgot to mention the most interesting thing about your post is I'm aware of something else that draws about ten amps at 20 KV and thats a 100KW class AM broadcast transmitter.
Think of something like a CCA 50000D like this link
http://www.transmitter.be/cca-am50000d.html [transmitter.be]
I'm pretty sure CCA isn't in business anymore which is too bad. 10000 pounds and 50 square feet of space so a little larger and heavier than your average gas pump.
Wanna see the tube data sheet?
http://www.cpii.com/docs/datasheets/78/4CX35-000C-8349.pdf [cpii.com]
Those little loop things by the anode are handles... its about the size and weight of a full trash can. "How can something full of empty vacuum weigh so much?"
You know you got a serious vacuum tube when the cathode needs 3KW just to keep warm.
Anyway the point is that similar levels of voltage/current/power are a big "Eh" in industrial EE land, whereas you'll run into people that mistakenly think it takes an entire nuclear power plant to charge a car or whatever LOL.
Now if every car were replaced by an EV and every garage in the burbs had a fast charger, yeah you'd need some more nukes and there would be issues on the grid and stuff. But at this point installing a mere charger is about as exciting to the electrical grid as installing a single medium/high power AM transmitter or a fraction of an old fashioned UHF TV transmitter. Now UHF TV transmitters, those guzzled electrions like drunken sailors at happy hour.
(Score: 1, Insightful) by Anonymous Coward on Wednesday January 11 2017, @08:17PM
teh calculation is wrong.
an ICE can only convert the latent energy of 40 l of gasoline by about 30 % efficiency.
an electrical motor, however can get much closer to 100 %.
so if we just say that an electrical drive-system for a car is 3 times more efficient then a ICE, then
a battery holding only a 3rd of energy of a 40 liter tank will get you just a far.
thus 1/3rd of original charging amps (which is still alot) would suffice to charge for the range... or the same original crazy 700+ amps and
1/3rd of time or 20 minutes .. i think.