Fully Charged in Just 6 Minutes – Groundbreaking Technique Could Revolutionize EV Charging::Typically, it takes around 10 hours to charge an electric vehicle. Even with fast-charging techniques, you’re still looking at a minimum of 30 minutes – and that’s if there’s an open spot at a charging station. If electric vehicles could charge as swiftly as we refill traditional gas vehicles, it wo
Alright, so let’s assume a 100kWh battery like some tesla models. Now, someone made such a battery that can be charged in 6 minutes… how much power does it need?
100 kW•h / 6minutes = 100kW•h / 0.1h = 1000kW = 1MW
So, we need 1 MEGAWATT car chargers … that’s some power required there.
Tesla semi is meant to be able to charge at 1mw, which makes sense considering the size of the battery, bigger battery means more cells and more space for cooling. The truck is also meant to support 1mw with the new v4 chargers. So if you believe Tesla (which is hard because of Musk), it is coming.
Charging that rapidly is only possible for some but not all 100% of the battery as you have to slow down as you approach 100%. 350kw chargers slow down around 80% (I’ve gone as high as 85% before I’ve seen the slow down). This happens at all charging speeds to protect the battery, even 7kw chargers slow down for the last couple of percent.
However charging to 100% of the time on ultra rapid chargers is monumentally dumb as it’s considerably more expensive per kWh than slow chargers, slower for that last 20%, blocks chargers for longer, and isn’t good for the long term health of the battery. It is as quick to charge twice to 80% than it is once to 100% on the same charger for 60 to 70% more range from charging twice. This is true because you avoid slowing down at the end of the charge.
You’re speaking with current lithium battery technology in mind. Supposedly, scientists in the article figured out a new technology that can be charged in 6 minutes. No word on whether it’s still necessary to slow down at the end, or charging efficiency. Time will tell I guess
It’s highly unlikely that they solve what is essentially a heat distribution problem with new battery materials. If you stick a huge number of cells in a giant cooling system then you can charge even lithium considerably faster than we do now for all of the 100%.
We are limited by the space, how good the battery pre condition charging is,maintenance schedule of the car and charging point.
My car has a separate fluid cooling system for ultra rapid charging that has its own maintenance schedule, if this system was bigger and didn’t have to go a minimum of 12 months between changes then it could be charged for longer at higher speeds.
If my car had a bigger battery with more cells in a suitable arrangement then again I could charge faster for longer as the charge is spread out across the battery. However eventually you’ll hit the point that you are only charging a few of the cells as the rest are full and you have to slow down or the battery will get too hot.
I just don’t see them completely solving the heat problem, just improving the current percentages.
most EV cars are more like 60kwh though.
The person above you said Tesla. Most newer Tesla models are 75 kWh-120kWh.
incorrect. most are 56kwh
Oh damn, I didn’t realize Tesla started making the standard range again. When I got my LR RWD in 2018, they were not selling the SR anymore. However, their Model Y starts at 75kWh, and their Model S and X are only 100kWh now.
Oh look. Another “could revolutionize” article.
All of these speedy innovations are great and everything, but they are impractical for most people. They will be useful for emergency situations and for long trips, but for the large majority of people driving electric vehicles their slow chargers in their houses will work just fine.
I love hearing about new ideas, but it’s annoying hearing them phrased like it’ll change the entire charging game. It doesn’t matter if they invent things that charge cars in 30 minutes. Most people will still be slow charging their car while they sleep.
The barrier to adoption is so often outlier scenarios though.
A vehicle is a huge purchase. For many it’s the largest purchase they will make. For everyone else it’s the second largest, behind their home. They want to make sure it does everything they do normally, and everything they might do once in a while.
As a small example, my family travels to a specific lake about once per year, for around a week. We switched cell phone providers to one that worked better at that lake. It costs a bit more, but even though on an average week it doesn’t matter at all if our phones work at that lake because on average we aren’t there, it was important to have our carrier work there. The outlier scenario actually made the decision for us with all other factors equal.
It doesn’t matter if the average buyer isn’t likely to take longer trips frequently. What does matter is that those outlier scenarios can be conceivably accomplished without significant hassle. And before you say that’s not reasonable, consider that it doesn’t matter that it isn’t reasonable.
People base their purchase decisions on unreasonable factors all the time. How else do we explain how many trucks are on the road?
It does not matter that current charging methods cover 99% of scenarios for 99% of people. The glare of that 1% will shine a light brighter than the positives from the standpoint of widespread adoption. And from that perspective, news of a solution to slower charging is a very good thing.
No revolution is coming. Deal with it. But it’s also okay to have up to hour charges. Take a break, get some coffee and everything is fine. If you can sit 3h in traffic to work every day or sleep in front of the store on black friday so you can get 20% off on things you don’t need, you can sit every once in a while on long journeys. You need a break from driving anyway.
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Imo the way things stand things are already good enough as they are.
we don’t need to double battery capacity/distance or even charging speeds, it’s a massive waste of resources that won’t benefit the vast majority of people.
from quick google
Every day, there are some 70 Million (M) worldwide driving trips. The average trip duration globally is 15 minutes long. The average trip distance globally is 15 Kilometers / 9.3 miles. The average speed globally is 30 km/h (or) 18.6 mph
so even if you have a 200km worst case scenario range on your EV, unless you are one of those people that are on the road a lot, it literally covers like 99% of your car usage.
Hyundai EVs charge with 350Kw, to 80% in like 15m which is perfectly fine for a longer roadtrip imo. I used to travel 200kms every two weeks and in most cases I took a rest half way through the 2 hour trip anyway to stretch.
if you are one of those guys that will come on and say you drive 500+kms every day and BEV is just unacceptable for you, well guess what, just get a fucking Hydrogen EV, pretty sure those can get up to 1000km ranges already which is more than my Diesel Hyundai.
Faster charging means a lower chance of all the chargers are in use at the service stations en-route. Currently if you’re in need of a charge you’ll have to wait for the others cars to get charged and then you still have the 20+ minute wait for your own car. That’s going to put a lot of folks off owning an EV. Coupled with the fact the EV uptake is growing a lot faster than the charging infrastructure to support it. Faster charging has a lot of benefits.
except, the vast majority of your trips are from your home to some place and back, you charge at home and the range is more than enough to cover 90+% of your trips.
rather than focusing on super chargers (which we also need along high ways) we need to focus on smaller lvl 2 chargers at places where they make sense, apartment complexes, offices, to enable BEV use for people who don’t own a home with their own garage.
you also completely ignore load balancing of the infrastructure, for one 350KW charger you can create 7 50KW chargers, that means 7 cars being charged while parked at places you spend lots of time at instead of 1 charger charging 1 car.
so like I said, fast chargers make sense next to main roads and highways during long trips and they don’t make much sense at all in cities.
This assumes everyone can have a charger at home. A large portion of people can’t. Apartments, associated spaces, on-road parking… a lot of people need public chargers.
we can build out charging infrastructure for apartments and offices
Average trip duration is not a great metric because they measure a trip as going from point A to point B. That’s great, but then I do six trips a day in errands.
Total miles per day is the metric to use. On average, in America, it’s 37 miles.
That is to say, EV cars would work for many people. But to reach the majority we need these advancements.
why? you literally say 37 miles, that means it’s already good enough for the majority.
Because we’re talking averages. People don’t buy a car to go an average number of miles. People buy a car to cover the maximum number of miles that they would go.
Maybe I average 37 miles a day. But four of those trips are 8-hour drives to see my in-laws. I’m not doing that in my Nissan leaf.
I’m lucky enough to have two cars. My Nissan leaf which I use for everyday driving, and an ICE for the in-law trips and my spouse’s driving. If there were a vehicle with extended range, like 300 mi, and a very quick charge, I would get rid of the ICE. Until then, 50% of my cars are not EV.
people go cars to go places 90%+ of those trips is below 200km
300mi with a quick charge? isn’t Hyundai Ioniq right there?
I still don’t understand why people need ultra distance in EVs. If I drove as much as often as the “I need a million mile range” crew I’d take a good, long look at my life and what was wrong with it.
I mean, it could be part of the job they do, whatever, but people vastly overestimate what they actually need from a vehicle.
If my commute distance was as long as some of these people claim, I’d do any number of things to change that.
there is stuff other than commute, for example a friend of mine works as a mechanic for agricultural machinery.
so there are days where he goes 400km one way to go do repairs on a piece of equipment.
Of course he is an exception to the rule just wanted to point out that there are jobs where you actually have to drive more than a BEVs range in a day.
Sure, it’s the long tail, but everyone pretends they’re in the tip of it.
I think there’s something else behind it honestly. People have grown used to not planning and making long drives randomly and don’t want to have to plan before making a Lewis and Clark length voyage now even if it’s pivotal because of impending climate collapse.
I don’t think the average American has moved very far from being aghast at Jimmy Carter’s suggestion that they wear a sweater when heating prices were high.
We’re spoiled babies and we don’t intend to change, even if it means the end of all things.
This thread is pure copium.
“Guys, go buy a more expensive car, but instead of taking 6 hours to get somewhere more now take an hour and a half. And if it’s a busy travel weekend maybe 3 hours. And don’t forget about the trip back.”
I’m all for EVs being successful but you all force feeding bullshit hand waving down people’s gullets ain’t helping.
The problem is you dismissing reality and inserting your insecurity onto electric cars.
Superchargers are a very big part of why Tesla is ahead of the curve, and you don’t charge 0-100, you charge 15-whatever you need to get where you’re going, which for my six hour drive was a 19 minute charge stop, where we watched Netflix, and I have the slowest charging Tesla.
