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Next-Gen Samsung EV Battery Gets 300+ Miles of Range From 20-Minute Charge (techcrunch.com)
An anonymous reader quotes a report from TechCrunch: 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. A 20-minute charge delivering that kind of range would help considerably with making EVs more practical for more drivers; it's around the time you'd spend at a rest stop using the restroom and grabbing coffee or a snack, after all. By comparison, Tesla's superchargers currently manage to provide around 170 miles of range on a half-hour charge, so Samsung's planned tech could approximately double that.
I'm sure it'll be available at the low, LOW price of just $50,000. Such a bargain! That is, ultimately, what keeps most people from ever considering an electric vehicle: They're just too damn expensive.
Who said anything about optional?
"Be particularly skeptical when presented with evidence confirming what you already believe." -
Avoiding the obvious comment/joke/pun regarding fiery past Samsung has with rechargeable products recently, the first thing I always want to see in regards to car battery technology is how many charge/discharge cycles can it handle?
If we were to assume the worst case, a vehicle could be driven 600 miles (two charge/discharge cycles) every day. Multiply that by 300 days in a year and an expected 5 (7?) year life, this is 3,000 charge/discharge cycles and what I see for most lithium battery technology is usually around 500 cycles. This doesn't include temperature extremes (say from -30C to 45C).
Can this (or any) technology provide this kind of life in a car environment? What do Tesla batteries claim to be able to do?
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I have no details about this battery in particular, but my experience with owning an EV, and knowing others who own them is that range drops around 15% at 0-5C compared to 20-30C.
Does anyone else have extreme skepticism that we'll see real autonomous vehicles available by 2021? (Ignoring the parlour tricks we have today)
Only on startup will electric heating be required to heat the cabin. Once the battery is up to temperature heating can be accomplished the same was it is now by piping some of the battery coolant through a heater core. If designed correctly (and the driver plans correctly) initial heating can actually be done while the car is still connected to the charger.
sudo mod me up
Yeah... this weekend's weather forecast calls for 40 Below Zero in my town (Alaska).
I wonder how those batteries will do here. Our car batteries get a little cranky w/o either a trickle changer or a battery pad warmer at those temperatures.
In my parts of the woods, all cars plug in, just not all year round! ;)
Yeah well that's all well and good, but how many times can this feat be repeated and with what kind of capacity loss to the batteries? Kinda light on the details guys.
Although there's a limit to how fast a battery can be charged before it overheats and explodes or simply damages itself, don't forget that there's a practical limit to how much power you can realistically draw from a typical house outlet. A Gallon of gasoline is estimated to have 33.41 KwH! (A normal gas engine throws a good portion of that energy away as heat.) That gallon of gas is pretty close to what my typical household uses in the entire day for electricity! So to pull down the equivalent of a couple of gallons of gas in 20 minutes is going to take the equivalent power drain of a sub-station transformer. It's why you don't see a commercial fast Tesla charger at home. A typical house doesn't use a 480 volt industrial power feed. You don't want much more current in the hands of consumers. A small mistake could cause a nasty explosion / arc.
No, you need to warm the battery first only to charge it. This is why Tesla disables recuperation during initial drive with cold battery. When it is cold it only has reduced capacity + current but that does not matter as during winter you do not need super-sport accelerations; and after 30 mins of driving it gets a normal temperature from invertor+engine heat so that you can utilize its full capacity.
Sure, this technology will beat Tesla's current capability, but it won't be available until 2021. Does Samsung think Tesla won't make improvements by then? They are already quietly increasing the capability of their charging stations, and rolling out new batteries using production tooling.
One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
Charging that in 20 minutes will be around 300Kw, 300V and 1000A or 1000V at 300A or some variation thereof.
Any way you look at it the cable and connectors will be ridiculous.
Hardly.
Take 2000V 150A, for instance. 1/0 or 2/0 welding cable, insulated to that voltage, would be well within the current electrical code. The stiffness of such a two-wire bundle would compare favorably to a gas-pump hose - especially in states (like CA) where the hose includes a vapor recovery passage.
Most wiring these days is insulated to 600V by default because it's hard to make insulation any thinner without making it fragile. 2000V is not difficult at all.
You could even include a coaxial "shield" that would detect any failures in the inner cable's insulation, along with signal-level switch wiring that would detect whether the plug was fully inserted into a matching connector, to prevent the enabling of significant current unless the system is safe.
A gasoline pump, running at 10 GPM, is feeding your car about 22 megawatts of fuel heat-equivalent. What's such a big deal about feeding it a mere 300 kilowatts, nearly 2 orders of magnitude less, as electricity rather than liquid fuel?
Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
Like everyone, I want to be able to refuel my gas car at home in 5 minutes. The only possible solution to this is for somebody to build pipes from an oil refinery to my home so that I can refuel my car every 5 minutes--all day, every day. That must be what they do with gas stations, right? a big fat pipe going all the way back to the refinery?
Hmmm, come to think of it, I swear I heard somewhere about gas stations actually just having big underground tanks that are periodically refilled. Then the tank only has to be big enough to service the needs of that station for a couple days...interesting.
Let me apply the same strategy to my home refilling station. I'll just have a home tank which covers a couple days worth of gas for my car, and then have that home tank periodically refilled. Hmmm.
But wait, what if there was some way to apply this same radical thinking to electric cars? That's super-crazy, but hear me out. I'll install a battery in my home that's sufficient to refill my EV, and then I'll charge that home battery low and slow from the grid (or *gasp* with solar power). Then I can quickly dump all this energy via fast-charging into my EV?
Yeah, I know, that's insane. Noone will ever do that. Instead we'll build a substation into every home in America--just like how we've built a giant network of gasoline pipes into every service station and home in America. That's definitely the simplest and cheapest solution that doesn't sound at all fucking retarded.
The most efficient EV (Hyundai Ioniq) uses about 25 kWh per 100 miles. 310 miles range is them 77.5 kWh.
77.5 kWh / 20 minutes = 232.5 kW, or enough to power about 200 homes
77.5 kWh / (480 Volts * 20 minutes) = 484.4 Amps
And that's assuming 100% charging efficiency (not factoring in heat losses during charging).
The problem is that you chose the Nissan Leaf, which is probably the WORST EV out there due to poor battery management. There is no active battery cooling and they tend to cook themselves to death. Also, having a small battery like the Leaf means it will cycle a lot more for the same number of miles compared to cars with larger batteries. The cycling and heat is what kills them, plus charging them up to 100%. Also, Nissan made a poor choice when it came to their chemistry and hence their batteries did not hold up.
Numerous Tesla Model S's have surpassed 100,000 miles and battery degradation is typically under 5% capacity loss and is generally not noticeable. They have since improved the batteries further so the newer batteries should last even longer. Tesla also has by far the lowest price per kwh for their batteries and it should drop by at least another 30% with their new factory coming online.
This post is encrypted twice with ROT-13. Documenting or attempting to crack this encryption is illegal.
That's quite a can of worms you've ripped the lid off. Superficially, yes, you are right.
But the reality is that ~half of electric power is generated from coal, not hydrocarbons. (as an aside In my opinion burning hydrocarbons in powerstations is dopey, oil and natural gas should be reserved for uses where their extraordinary energy density is most useful, basically aeroplanes and the like,)
The consequence of burning coal is that for many many many regions worldwide, an EV actually produces more CO2 than a similar sized diesel or petrol car.
Sorry about that.