China's CATL Reveals 621-Mile EV Battery, Under-7-Minute Charging (interestingengineering.com) 108
CATL unveiled a new wave of EV battery tech, "including a lighter battery pack rated for a 1,000-km (621-mile) driving range and an upgraded fast-charging battery that can go from 10 percent to 98 percent in under seven minutes," reports Interesting Engineering. From the report: The launches were made during a 90-minute event in Beijing ahead of the Beijing Auto Show, where automakers are expected to showcase next-generation EVs and connected technologies. CATL said its latest Qilin battery -- a high-energy-density pack often paired with nickel manganese cobalt (NMC) cells for long range and improved space efficiency -- can deliver a 1,000-km (621-mile) driving range. It is designed to deliver long range while reducing battery pack weight.
The company said the product is aimed at automakers facing tighter efficiency rules in China and other markets. It also rolled out an upgraded Shenxing battery -- CATL's fast-charging lithium iron phosphate (LFP) pack -- that targets one of the biggest barriers to EV adoption: charging time. CATL said the pack can recharge from 10 percent to 98 percent in less than seven minutes.
The new Shenxing battery marks a significant improvement over CATL's previous version, which charged from 5 percent to 80 percent in 15 minutes, according to Financial Times. [...] The company also announced plans to begin mass delivery of sodium-ion batteries in the fourth quarter. Sodium-ion technology is seen as a lower-cost alternative that could reduce dependence on lithium, cobalt, and nickel.
The company said the product is aimed at automakers facing tighter efficiency rules in China and other markets. It also rolled out an upgraded Shenxing battery -- CATL's fast-charging lithium iron phosphate (LFP) pack -- that targets one of the biggest barriers to EV adoption: charging time. CATL said the pack can recharge from 10 percent to 98 percent in less than seven minutes.
The new Shenxing battery marks a significant improvement over CATL's previous version, which charged from 5 percent to 80 percent in 15 minutes, according to Financial Times. [...] The company also announced plans to begin mass delivery of sodium-ion batteries in the fourth quarter. Sodium-ion technology is seen as a lower-cost alternative that could reduce dependence on lithium, cobalt, and nickel.
Let's eat Grandma, shoots, and leaves. (Score:5, Informative)
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That would be OK if a car had both working together.
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That's actually a pretty good concept, if the engineers agree. A battery built for fast charge that is good enough for a regular commute and a battery built for max energy density.
Of course, if you're heading off on a 2000 km trip you're probably not going to like having to stop every 100 km after the first half of the trip.
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how old are you dude, fark.com i thought that died 15 years ago
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nobody cares at all what you think because you dont actually care about anything, you're just a dumb troll, its all a big joke, you dont mean any of it.
so either post actual comments under an actual username or just fuck off forever already
Re: Let's eat Grandma, shoots, and leaves. (Score:1)
That makes no sense - we don't know the capacity of the fast-charge battery, and we don't know the charge time of the long-range battery. And the cost of the battery pack is a huge part of most EV pricing, putting two full-capacity but different battery technologies in one car would adds thousands and thousands to the sales price and would push vehicle weight to new, unbelievable, heights.
Putting two batteries in an EV makes as much sense as putting both a diesel and a gasoline engine in a vehicle, because
Re: Let's eat Grandma, shoots, and leaves. (Score:2)
That makes no sense - we don't know the capacity of the fast-charge battery, and we don't know the charge time of the long-range battery. And the cost of the battery pack is a huge part of most EV pricing, putting two full-capacity but different battery technologies in one car would adds thousands and thousands to the sales price and would push vehicle weight to new, unbelievable, heights.
Putting two batteries in an EV makes as much sense as putting both a diesel and a gasoline engine in a vehicle, because
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Lol, the 621-mile and the 7-minute charging battery are two different batteries.
Yeah, the article is pure slop, whether human or AI.
its latest Qilin battery -- a high-energy-density pack often paired with nickel manganese cobalt (NMC) cells for long range and improved space efficiency -- can deliver a 1,000-km (621-mile) driving range.
"often paired with"? like the pack can exist independent of cells? or it can use different cells but have the same specs? and no capacities or charging rates (in watts) mentioned anywhere. or degradation profile.
Anyway, still probably interesting incremental progress but impossible to know what from the press release.
Re: Let's eat Grandma, shoots, and leaves. (Score:1)
Well, it's either AI 'slop' or a horrible translation from Chinese...
Re:Let's eat Grandma, shoots, and leaves. (Score:5, Insightful)
Lol, the 621-mile and the 7-minute charging battery are two different batteries.
I'm annoyed more by their use of miles as a measure of battery capacity. I own an EV and the range varies quite a bit depending on what speed the traffic is flowing at, and the climate control settings. On a 70MPH highway with the heat on, I can easily drop down to 2.5 miles per kWh. That's 5/8 of my car's EPA rated range. Of course, here in Florida needing heat is a rare thing, and traffic is usually pretty bad (which in an EV is actually good for efficiency), so I often actually exceed the 4 miles per kWh EPA rating.
Batteries don't hold miles, they hold watt-hours.
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Well of course the energy (usually in kWh) is an important measure, cost, volume and weight all matter as well. You can have a 1MWh NMC or LFP battery but it's not going to fit and would be too expensive for your EV.
So the fact that they can make a real car with 1000 km range and 7-minute charging would be impressive, if it were true. The first problem is the chinese standard. 1000 km on the chinese standard means something like 850 km WLTP or 600 km EPA, which in the end is more like 500 km in the real wor
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Well of course the energy (usually in kWh) is an important measure, cost, volume and weight all matter as well.
Either way, miles isn't, because it's an arbitrary metric. Is that Prius miles (as little as 180 Wh per mile) or Cybertruck miles (800 Wh per mile while towing)?
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it isn't great but it is also consistent with how ICE vehicles are advertised.
Sorry, let me clarify what I was trying to say there.
Advertising battery capacity or gas tank capacity in miles is an entirely reasonable metric for a car, because a car is the complete package. You'll have some variation depending on how fast you drive, how much you use regenerative braking, how much you have to use the heater, headwinds versus tailwinds, hills, whether you're towing (where applicable), etc., but there are standards for how to calculate MPG in a reproducible way, and as long as everyone f
Re: Let's eat Grandma, shoots, and leaves. (Score:1)
So the fact that they can make a real car with 1000 km range and 7-minute charging would be impressive, if it were true.
But, of course, it's NOT TRUE. They are describing two different battery technologies:
1) one technology that can charge very, very quickly (10%-98% in 7 minutes!), with no mention of capacity, and
2) a different technology that weighs less than other battery technologies for a given capacity that can run an EV up to 1,000 KM, with no mention of charge time.
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Any car this thing goes into week probably be a lot more efficient than that. Mine will do 3.7mi/kWh at 70 with the heat on, and it's not a small car.
Re: Let's eat Grandma, shoots, and leaves. (Score:1)
"This thing" is two different things - one is a high-capacity, light-weight "thing," the other is a quick-charging "thing."
They are describing two different battery technologies, each optimized for a different application...
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Lol, the 621-mile and the 7-minute charging battery are two different batteries.
I'm more interested in knowing if the car is also that long. :-)
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It would be quite a challenge to build a car with a 1000 Km long rigid battery.
One solution would be to mount the battery vertically. It would cause problems with aviation and satellites, and would require abolishing all underpasses and removing overhead cables. It should have a ligthning port a few Km from the ground, for free fast charging during thunderstorms. Balancing this battery so it doesn't tip over would be tricky, but if Segways can be balanced, so should this. It would have to be a cutting e
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And neither of them are going into actual production cars.
First time dealing with "this how we do marketing in PRC"?
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This is the right direction (Score:3)
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What was that?
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the douchebag factor that came with owning an EV.
What was that?
Well, I could certainly associate some bad driving behaviors with Tesla owners. Though, I'm sure at least some of it is due to the speedometer being placed off in the corner of the infotainment display, so the drivers really are oblivious to how fast (or slow) they're going
Ironically, the OP mentioned their preference is for a hybrid vehicle, which was the original car type associated with having smug owners. [fandom.com]
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It's probably more about performance. That instant torque and one pedal driving makes a lot of otherwise normal drivers into awful drivers.
I've seen this happen with quite a few people. Man switches from normal car to Tesla, starts speeding. Because it just accelerates so damnably fast, and it feels good that it does.
"Tesla smile" is a meme for a reason.
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BMW owners still hold the crown for the douchiest drivers.
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That's because the original hybrids were piles of crap that people primarily bought because they wanted to virtue signal.
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What was that?
The palpable aura of smugness that exuded from early-adopter Tesla owners, especially in Europe.
Offset almost entirely when I watched 20 or so of them angrily queuing to use one of the four Superchargers at a service station on the M25.
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Re: This is the right direction (Score:2)
Teslas have a navigation app that tells you how many open chargers there are at all nearby Tesla supercharging stations, that they blindly just showed-up hoping for an open charger is something they chose to do, they could have just used the app.
Re:This is the right direction (Score:4)
>Now how about finding a way to do it with silicon-based rather than lithium-based batteries so that we're not using costly mines to create the batteries?
Why silicon rather than sodium?
Sodium is right under lithium in Group 1.
>> The company also announced plans to begin mass delivery of sodium-ion batteries in the fourth quarter. Sodium-ion technology is seen as a lower-cost alternative that could reduce dependence on lithium, cobalt, and nickel.
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The sodium announcement is the bigger deal, to my mind. Sodium offers lower cost, better cold weather performance, greater ruggedness when “mistreated” eg left at high or low state of charge, and even greater cycle life than LFP, perhaps even enough to finally get people to stop bleating on about batteries needing replacement. China is a giant EV market but penetration in the north has lagged partly because of cold weather performance. Now we have CATL pushing hard, and a new cheaper cold-tolera
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Re:This is the right direction (Score:4, Informative)
The general public used to also have a problem with the douchebag factor that came with owning an EV. Now we're going in the right direction.
The only douchebag factor for EVs was the people who considered EV drivers douchebags for daring to not have interests in the same luddite approach as them.
A 7 minute stop is getting close to the same amount of time it takes to fill up a gas tank and the equivalent time to going into a convenience store to get something while you're pumping gas.
The average car spends 12 minutes on a petrol station forecourt. (I was part of a team which analysed the behaviour of some >2000 highway service stations based on camera footage. We tracked the time a license plate was at a stop. 7 minute is a irrelevant target by people who have not looked at actual human behaviour. There's no need to charge that fast. Road trips are not about filling up as fast as possible and racing back on the highway to set travel speed records. They are about filling up, getting out, going and getting some chips and a coffee, taking a piss, and then slowly going about your way.
I have a car that is well and truly generations behind in charging speed. Yet I can already fill up from 20-80% in the time it takes to go buy and drink a coffee (people who eat and drink in their cars are gross and a danger to others on the highway). The current generation of EVs already both charge 20-80% faster than needed for a typical highway stop, AND are able to drive longer distances than safe to do so between highway stops (if you think you're not impaired after 2 hours of continuous driving then I've got a wonderful theory for you to read about over estimating your capability, you are probably one of those 95% of drivers who think they are above average).
We are spending way too much time addressing unrealistic irrelevant concerns.
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... ...
(people who eat and drink in their cars are gross and a danger to others on the highway).
(if you think you're not impaired after 2 hours of continuous driving then I've got a wonderful theory for you to read about over estimating your capability, you are probably one of those 95% of drivers who think they are above average)
Dude... i'm sorry to lay into you but the position you're taking is more conservative than "95% of drivers".
I'll grant that eating most things in a car causes some level of mess, and probably also increase risk.
But drinking? if you can't drink something without an undue increase in risk to your self, the car, or other people on the road idk what to say. most people can. And i challenge you to show evidence or argument otherwise. And i don't mean that it's some statistically discernible increase in ri
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But drinking?
Congrats, you're one of those people who think they aren't impaired when doing something other than driving. But FYI that 95% comment wasn't about drinking. It was about the duration of driving between stops. Are you one of those people who think you're above average at reading comprehension?
And i don't mean that it's some statistically discernible increase in risk, but that it is a meaningful problem
Well aren't you quick to set a goalpost in an unverifiable way to try and defend your position that a person distracted in any way isn't impaired from a task at hand. Bonus points if you're the type of person to take th
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You may not, statistically though most people will. Again we've studied this specifically. Just do me a favour and try not to get anyone else killed as you drive impaired from fatigue down the highway. You may not value your own life, but that doesn't mean someone else should suffer.
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None public. It was internal in the company I worked for. The analysis was part of a larger project looking at where best to place DC fast chargers. Time spent on the forecourt was only one metric, we also analysed traffic volume, change in traffic over time, and related it to spend in the shop to try and determine where it is most profitable to put a charger.
The fact that people spent so long at a service station on average was just a surprising side note in the study.
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It seems crazy to give up all the other benefits and time saving, because sometimes you have to stop for 15 minutes instead of 7.
Especially since if you have to use petrol, you can't walk off and go to the bathroom or get a coffee while it fills up.
Yep (Score:5, Insightful)
There's a reason domestic auto makers are terrified of China. They might have to get off their asses and do some actual innovation instead of selling high margin barges on 8 year $1000 a month loans.
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They are focusing on innovating. Sure some numbers are probably fudged / inflated. But overall, they're kicking the western world arses when it comes to PV, EV and battery tech.
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key word here is innovation, not stock prices and profits
Most companies switched from innovation to (short term) profits and stock prices (fire all knowledge people to reduce cost, hire cheap labor or , like now, AI )
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the way i read mileage for EV's is for normal use in US with heat or AC, music/radio and highway driving (70-80 mph) take the total and subtract 2/3rds. at least my personal experience. great for local use especially during these times and as long as you can charge at home. per mile it is twice as expensive to charge commercially than gas.
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When gas hits $10 there may be too much pressure to bring in BYD to stop it. At least atomic energy isn't more sensitive to global price shocks than it needs to be (EPA being the champion of high energy prices).
Automated lights-out factories are a total game changer and basically nobody cares if domestic auto workers lose their jobs due to sales collapse or to automation. It didn't have to be this way but Kissinger sold out Middle America so GM became a sales tactic for GMAC loans. We'd need a time machi
Afraid of having to buy batteries from China (Score:2)
There's a reason domestic auto makers are terrified of China.
Yeah, China is trying to lock up rare earth and require them to buy batteries from China. That is the real fear. Without their own ability to manufacture batteries at scale they can't hope to compete.
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Without their own ability to manufacture batteries at scale they can't hope to compete.
BYD started making batteries, and when it was successful enough there it branched out towards making cars - and along the way vertically integrating virtually their entire supply chain.
Other car makers are dependent on external suppliers, and this shows in their inability to screw down costs.
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Yes, "to bring Jesus back".
They actually believe this. Like, you can spend money to get God to change his calendar.
We don't have to believe it - we only need to understand that they believe it. Red heifers, Gog and Magog, Third Temple, they jump up and down and speak in tongues when you talk about it.
Meanwhile Americans spend 60% of their wages on taxes and regulations and don't complain. They vote for anti-war, anti-spending candidates and get the shaft after elections. $10 gas might actually change thi
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what a deal!!
i give you 700 million, i get 20 billion in return!!
where can i sign for a deal like that?!
Re:In other news (Score:4, Informative)
i mean if you have 700 million you can buy the next president, last one went for like 200 million.
I have to wonder (Score:1)
if this is a dog-and-pony show, and if there's nothing rigging the numbers. Because these are *really* good numbers.
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Things with 621 on the name do tend to do dog-and-pony shows alright
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I actually tried to read the source story but on mobile without adblock something like 90% of my screen was covered by ads.
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All you have to do is search CATL, 621 and battery and you can read dozens of articles on this topic, some going into extensive detail. There’s no doubt links to CATL’s own press releases in the search results too.
Great mileage, what about safety? (Score:1)
if this is a dog-and-pony show, and if there's nothing rigging the numbers. Because these are *really* good numbers.
I'm curious if these batteries are safe enough to leave in an attached garage or should the car be kept in a detached car port for safety.
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I wonder... (Score:2)
...how many times you can do a 7-minute charge on the battery before it dies?
Also, there's no mention of how much capacity the 7-minute charge battery actually has, so the "7 minutes for 10%->98%" lacks the context to be useful.
Finally, if the capacity is meaningful, what specification of charger does it need to reach these numbers?
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...how many times you can do a 7-minute charge on the battery before it dies?
Also, there's no mention of how much capacity the 7-minute charge battery actually has, so the "7 minutes for 10%->98%" lacks the context to be useful.
Finally, if the capacity is meaningful, what specification of charger does it need to reach these numbers?
a lot. a better version of the announcement:
CATL stated the pack supports an equivalent 10C and peak 15C charging rate, with 10% to 80% completed in three minutes and 44 seconds, and 10% to 35% in a minute.
A 10C rating indicates a battery can safely charge or discharge at a current ten times its rated capacity, enabling a full charge or discharge in roughly six minutes.
CATL added that at 30C, charging from 20% to 98% takes about nine minutes.
The company said capacity retention remains above 90% after 1,000 full cycles, and that the Shenxing design tackles heat through lower heat generation, improved thermal propagation and more precise control.
https://autos.yahoo.com/ev-and... [yahoo.com]
What size exaclty? (Score:5, Interesting)
> 1,000-km (621-mile) driving range
Driving range of what? A go-kart? A better measure might be kWh. How many kWh did you charge in 7 minutes?
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If you insist on another metric, then gravimetric and volumetric density would be interesting.
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> You can then add as many of them in parallel as you want.
Okay sure, for that battery that provides "1000km of range", that I want to charge in 7 minutes, how much power will the charger need to provide? I can't spec the charger if you can't tell me how much power your battery will need for charging.
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Why do you not calculate that yourself? ... and without even starting writing numbers on a piece of an envelop, you know already your 110V line won't do it.
Take for example a 100kWh battery
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1.21 jiggawatts
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The article is about two different battery types:
- First one (NMC) is high energy density but slow charging, short life span and a self igniting fire hazard. Ie: The common Lithium-Cobalt tech.
- Second one (LFP) is fast charging, long lasting and safe but a lot lower energy density.
I am not buying an EV until (Score:3)
I can drive 2000 miles on a 5 minute charge because I drive on vacation once every other year, maybe!
Until that happens, EVs are useless for everyone!
Our infrastructure isn't ready for these anyway (Score:2)
If we ever get close to the utopian dream of replacing all, or most, gasoline vehicles with electric ones, think of what a typical neighborhood corner charging station would look like. (Or worse, a busy corner with 2 or 3 stations). If you want to supply upto 1MW _per charging port_, you would need a peak of 30-40MW going to these 2 or 3 stations.
Imagine giant transmission lines criss-crossing the city in order to just feed these charging stations.
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Even worse, a lot of people prefer underground cables.
You'll have to run active cooling lines with those wires underground. And guess how often active cooling will fail, resulting in need to keep digging those cables up?
This is made worse by the "15 minute city" push which ensures that home charging is just not going to be a thing in any meaningful capacity.
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Depending which train line you take it is 50 minutes or 2
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You should stop guessing what it means and read their papers.
They want places like one I live in, not like one you live in. Where population density is very high and "houses" don't exist. It's all apartment complexes.
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You'll have to run active cooling lines with those wires underground.
Nobody is running DC carrying cables underground though. That would all be high voltage AC which is converted at the charger into DC. The liquid cooling is literally just for the charger to the car.
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AC still generates significant heat unless extremely high voltage.
For example where I live, the main reason why I can't have an electric vehicle charging off my heater box in my parking spot is because...
drumroll...
underground cable fire risk.
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What voltage do you think DC charging bays are fed with? It's gonna be typically 480V 3phase or higher which run underground all the time without "liquid cooling". That's silliness, sorry. Just like the wires in your house walls alsont need cooling because the heat is simply voltage x resistance and you use the right gauge of cable to handle the load within the heat tolerance. This is like EE 101
And the answer to your dilemma is to install a higher gauge of cable no? Or the proper conduit? It sure wouldn
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eh peak 500kw is probably as high as we're likely to get with current charger standards but even there apparently it tends to be paired with local battery storage to smooth grid demand.
But yeah, it's still a LOT of power to deliver. I suspect there will be fewer overall stations working at higher duty cycles, but then if you add queuing time at Costco electron station it somewhat defeats the purpose of the very fast charging...
Re:Our infrastructure isn't ready for these anyway (Score:5, Insightful)
Imagine giant transmission lines criss-crossing the city in order to just feed these charging stations.
Imagine giant semi-trucks with trailers full of highly flammable liquid, stopping at gas stations to deliver energy so that motorists can fill their vehicles. Imagine, wars fought over access to cheap materials to create those liquids. Imagine, huge tax subsidies given to support the profit of the companies that dig up this liquid and turn it into usable energy.
It's only nonsense until it becomes commonplace, and then our brains accept it as normal.
Re:Our infrastructure isn't ready for these anyway (Score:5, Informative)
That's a misrepresentation of the so-called utopian dream though, the actual dream is that most folks charge their cars at their homes with regular 20-40A house power.
30A @ 240V is not uncommon for most American homes to have or be installed and that ~5kW is more than enough to cover like 90% of peoples commutes and daily driving by just plugging the car in overnight.
Electric charging infrastructure doesn't need to and should not mirror petrol infrastructure.
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That's a misrepresentation of the so-called utopian dream though, the actual dream is that most folks charge their cars at their homes with regular 20-40A house power.
30A @ 240V is not uncommon for most American homes to have or be installed and that ~5kW is more than enough to cover like 90% of peoples commutes and daily driving by just plugging the car in overnight.
Electric charging infrastructure doesn't need to and should not mirror petrol infrastructure.
The single family home thing has been solved basically from the beginning. L2 charging is easy and even L1 is probably adequate for most.
The issue now is people who can't charge at home because e.g. they live in apartment buildings and park either in a garage, a parking lot, or on the street. So either we put an appropriately metered L2 charger at every such spot, OR they have to use fast charger infrastructure on demand more like a gas station.
Re:Our infrastructure isn't ready for these anyway (Score:4, Insightful)
Exactly and the apartment thing is just solved with time really. Running wires isn't new, we know how to do it it's just the inflection line of the capital investment and return value for landlords. They could even put in L1 chargers in spots and solve most people's requirements.
The infrastructure for EVs is just more of what we've been doing for decades and decades.
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30A @ 240V is not uncommon for most American homes to have or be installed and that ~5kW is more than enough to cover like 90% of peoples commutes and daily driving by just plugging the car in overnight.
Over 8 hours, that's 40 kWh, which equates to around 160 miles. I think the percentage of Americans who drive 160 miles per day, on average, is a lot less than 10%. If everyone could arrange for 5 kW charging at home, there would be very, very few people who couldn't easily switch to an EV.
Even an L1 charger (15A @ 120V = ~1.8 kW) would provide enough for most peoples' daily driving. With 8 hours of charging, that's like 50 miles of range. Some days will be heavier, but if your car has 300 miles of ra
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And here it pays off to have good infrastructure. Something the US never understood. This will not be an issue in the actually developed part of the western world. For example, we have 30kV lines under the curb here, each one can deliver something like 20-50MW right there. Per cable.
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"... think of what a typical neighborhood corner charging station would look like."
It will look like what it does now. High speed DC charging is not needed for "neighborhood corners". The real problem is that only a minority of the population can charge at home, with half the population not owning a home. EVs cannot succeed if everyone relies on DC charging for daily use, your imagined solution is stillborn.
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It is already happening all over the world.
Just not in your yahoo country.
In most countries, no one "replaces" a gasoline car. They phase it out and by a new car. 50% of the new car decisions are electric.
People who never had a car, most of all times by electric.
In ten years a used non electric car is unsellable.
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think of what a typical neighborhood corner charging station would look like
EVs do not fast charge in neighbourhood corners. You're applying gasoline vehicle level thinking to a car that doesn't depend on being filled with gasoline. EVs have fast charging and destination charging. Your neighbourhood falls under the latter, slow L2 chargers. Fast chargers will only ever exist in arterials because no one actually would use an EV fast charger in a neighbourhood when they can plug into a normal charger for 1/4 of the cost.
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Jesus Christ on a bike, you people are so stupid.
1. You don’t need to use flash charging at a neighbourhood corner charging station. That would be idiotic. You just put these on strategic highways that have lots of travellers going long distances. In neighbourhoods, you use chargers that provide a charge overnight, or if you’re really feeling fancy, in an hour or two, because that’s the use case.
2. You don’t supply all the power directly on demand. That would be idiotic. You use a tr
We need this tech and its evolution (Score:2)
It is sad that only China seems to realize this. But better they do it and we have it available than nobody does it.
I'm more concerned about safety of these, really (Score:3)
As someone who daily drives an EV and has done so for years, I'm obviously not overly paranoid about the battery fire issues out there. But the faster you charge a battery pack, the more heat gets generated. And the higher the battery pack's capacity, the more potential energy is contained inside it to cause a problem if it has a sudden failure.
While the same could be said about the potential energy in tanks of gasoline or diesel fuel? The challenge for EVs is that extinguishing battery fires is FAR more difficult to do. A number of race tracks have established a burn area to tow an EV with a battery fire to, so it can sit there as long as it needs to burn itself out. They don't even try to extinguish the fire. Clearly, that's not such a viable plan for a crowded interstate during rush hour.
I know there are a few experimental technologies out there, like the device a fire department can attach to the end of a hose, so it rolls under an EV and sprays water directly upwards, to cool a battery pack right above it. That's good stuff, but I'm not sure it's being adopted in the mainstream as quickly as battery pack capacities are increasing.
Re: I'm more concerned about safety of these, real (Score:2)
Meaningless numbers (Score:2)
And clearly one figure refers to an NMC battery where energy density is better but it costs more and you do NOT want to frequently charge it up to 100%. And the other refers to a LFP battery whe