Posted on 04/29/2024 1:02:16 PM PDT by Red Badger
On the road to delivering 100 miles of EV range in five minutes by the end of 2024, tech firm StoreDot has installed its extreme fast charging cells in a Polestar 5 prototype, and zapped the 77-kWh pack to 80% capacity in 10 minutes.
For many car drivers, the journey from home to work or the mall or school is a fairly short one, well within the per-charge battery range of modern electric family cars anyway. But those needing to make longer daily trips are going to be plugged in more often.
DC fast-charging is already available for quick top-ups, but you could still need to find something to do while you wait a while. What if such pit stops could take around the same time as filling up a gas guzzler? That's precisely what StoreDot is aiming for with its extreme fast charging (XFC) high energy silicon-dominant battery cells – with 100 miles (160 km) of battery range in exchange for three minutes plugged in as the target for 2028.
Last year, performance EV brand Polestar revealed its intention to "revolutionize the ownership experience for EV owners with the ability to recharge in minutes" by collaborating with StoreDot to install a full-scale XFC battery module in a Polestar 5 prototype. And that's precisely what's happened.
Jumping out of the lab, the 77-kWh battery pack is reported to have consistently pulled a whopping 310 kW from a DC charger, and peaked at 370 kilowatts. The battery pack was juiced from 10% to 80% in 10 minutes, and was monitored throughout the tests, but didn't rise above the "target operating temperature set by engineers of both teams."
(Excerpt) Read more at newatlas.com ...
There was a post on FR where someone talked about charging their EV in the winter for an extended period of time but since there was nowhere to go, they stayed in their EV with the heat running. After an hour or two, it was a $80 charge with minimal gain due to the heat offset. I wish I kept the link bt I jst remember wondering, why?
E=Voltage
Such as I=E/R
I=amps
E=volts
R=ohms
If the battery is cold, it will be slow to charge. Teslas have a preheat battery function that is suppose to be used before supercharging in cold weather. I saw a youtube video some time ago. A guy wanted to see how long it would take to charge his Tesla around 0F with a completely cold battery. He left the car parked at the charging station for 24 hours. When he plugged it in, it took about a hour before the battery accepted any meaningful charge. It took him about 2 hours to charge from 20% to 80%
The current standards for HVDC fast chargers is 800V with certifications already done for 1000 and 1200V. Most gen 1/2 EVs are 400-480V so chargers are backwards compatible. The CANBUS protocol is used over the signal pins to negotiate the charging amps,volts and voltage ramp rates. No current is ever present until a full handshake is completed in the signal and then the guard pins also signal true earth to ground neutral.
For 370 kw at 800V is 462 amps that’s half of what the NACS plug is rated for uncooled Tesla has tested the NACS plug to.1000 amps uncooled and are looking to get the cert for that to have 1000/1000 V4 supercharger aka the Megacharger a megawatt per plug.
“I can fill my RAM 1500 in five minutes and drive 500 miles. My cost per mile when considering cost of vehicle and maintenance etc. is less than an electric car”
You are a flat out liar. There is no way a Ram 1500 can touch any EV in cost per mile. You said electric car not truck and I am going to call you on it hard. The 450hp model 3 Tesla new is 35,000 used 2023 is 28k you cannot touch a 1500 ram of equal year for less than $40,000 in any trim. So nearly double capital expenditure upfront for the truck. At best you will get 25mpg with the V6 but bro bros want the V8 which is 20mpg or less.
So ignoring capital sunk costs and going to your cost per mile only at 20mpg 87 octane is 3.46 per gallon today that’s 17.3 cents per mile in fuel costs.
A model 3 Tesla takes 180 watt hours per mile and goes 5.5 miles for each kilowatt hour added. Retail power in Texas is 9 cents per kWh I just looked at power2choose.org our state run deregulation broker site.
This is elementary school math now. 9 cents divided by 5.5 miles is 1.63 cents per mile that’s ten times cheaper per mile with a vehicle that cost less new. You messed up when you compared cars to trucks a car will always be more efficient.
So let’s look at a class 8 truck you know a semi truck with a trailer vs your 1500. 82,000lbs vs 8,000. PepsiCo has released real.world data from max mass loads on their Tesla semi truck they have an average 1.7kwh per mile over a 400 mile run. This is with 82,000lbs of vehicle total. What’s that cost mile? Easy again 9 cents per kWh is 15.3 cents per mile. A Tesla semi moving a load ten times th gross mass of your 1500 which could not dream to move is still cheaper per mile. A fully loaded semi truck is less mile than a light duty gas truck math on a energy per mile basis.
Is an electric vehicle more efficient on a per mile basis of energy used? Yes it is. However, when you factor in the government subsidy ($7500) and replacing the battery pack at about 200,000 miles it is more expensive. That 7500 dollar subsidy comes from taxes on us. To replace that battery on a Ford Lightning is about 32000 dollars and you would have paid about 15000 dollars for electricity to drive 200,000 miles. My Ram would have used about 30,000 dollars worth of gasoline.
I have nothing against EVs so long as I do not have to subsidize them with my tax dollars. Let the Free Market decide what the best vehicle is.
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