Breakthrough could finally see Supercapacitors power electric cars
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- เผยแพร่เมื่อ 28 ก.ค. 2023
- Breakthrough could finally see Supercapacitors power electric cars
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#technology #supercapacitor
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Another breakthrough in capacitor research recently took place. It was discovered that carbon black can be introduced into concrete and will self organise into a capacitor as the concrete cures. Whilst relatively low in energy storage density the cost is negligible when mixed into concrete which would be made anyway - just need to ensure the concrete retains sufficient strength for purpose. Apparently it would be possible to store around 10 to 12 kWh in the structure of a typical house. (Might be an interesting video topic).
The idea of using capacitors in electric vehicles is that during the regeneration periods of which there could be many during a charge to discharge period of a trip the regeneration period would go to the capacitors instead of the battery bank thereby reducing the charge/discharge cycles of the batteries even though it may be small compared to the total capacity of the battery bank.
Current batteries have a pretty long life, though. Maybe it is worth it anyway.
Also Caps charge and discharge in a very short time frame. If they can control the discharge rate that would be a breakthrough worth using.
Not as good as the flux capacitor. Will be waiting for that.
Also very useful if the battery is in a particularly high or low state of charge when battery management would want to limit regen braking. Energy from regen braking would go directly into the capacitor.
@@quamrana there is no need to do that, contemporary Lion batteries absorb the energy efficient enough, in any state... when Tesla bought Maxwell tech. everbody thought that it's because supercapacitor patents of Maxwell, but it was understood they were after dry battery electrode patents...
There is so much energy storage development going on these days, I can't wait to see what successfully scales and hits the market first! Thank you Sam!
Even if SC's don't get to the same energy density as LFPs, they can be used as a hybrid form, with LFPs making up 80 percent of storage and the supercapacitor acting as the main grunt work. This further prolongs the life of the battery, and makes quick charging for top ups on road trips possible.
It would be especially usefull to recapture energy from breaking at stop lights. Some of the recuperation currently is lost because the batteries cannot take up the entire energy in a short time. This could increase lifetime and milage in EVs
Several car companies, including Mazda and Lamborghini, have used supercapacitors to help with brake regeneration and start/stop systems. One of the largest supercapacitor companies, Maxwell, sells caps for brake regeneration.
Tesla bought Maxwell to get their dry-cell technology, then sold it off. I think their car batteries have always been large enough that they could absorb the regeneration power surges without needing to add supercaps.
Further to this point, which is excellent btw, capacitors are good for shorter term storage, at least in their present form which is exactly why they're apt for regenerative capture in braking. They're also good for uses such as photoflash (been done for half a century) and ignition use (spark plugs and detonators).
But as an electronic tech, I have to wonder if supercaps as they exist in their present form could be used as a *buffer stage* to be recharged in minutes, and then slowly discharged into batteries while the vehicle is underway. Supercaps have absolutely minimal weight to them, and do present a danger of accidental flash discharge compared to stable batteries. Like a flywheel, catastrophic failure is possible, so the discharge of the caps into a longer term stable storage medium is desirable for many reasons.
@@inewt58the reason why Elin sold off the supercapacitor division of Maxwell is because he was doing a PhD in the discipline of supercapacitors and abandoned it because he cane to a dead ened with its abikity ti improve the capacitance to where it could compete with batteries. And he was working with Maxwell with the intention to buy it if they achieved the level, but instead they branched off with the dry cell battery tech. He then bought Maxwell for the latter and sold the rest to a Korean company .
Thank you for contributing,......... what you fail to recognise is that 98 percent of humans on the planet, don't give a toss about it.
Change your user name to @georgestorewell. More appropriate me thinks 😊
Use supercapacitors to capture the energy from regenerative braking.
Think city buses doing stop and go.
Maybe engineer it where the capacitor powers the car and the battery provides the charge. Outside the box thinking. Thanks for your channel.
One more drawback with supercapacitors and capacitors in general is that their voltage is proportional to their charge. So if 100% is 200V, then 50% is 100V. It's a challenge to efficiently run electronics when voltage changes so much. Batteries maintain a roughly stable voltage for most of their discharge curve.
Supercapacitors could be very useful for absorbing regen braking energy; it can absorb huge amounts of current for short periods.
My understanding is that capacitors are 4X more volume per KwHr stored, so not competitive with Lithium Ion batteries.
I thought supercapacitors were around for quite some time. I can't see them powering electric cars, but they make an excellent buffer. They don't hold a charge very long, but they take a charge very quickly, I'd heard some time back they were going to be utilized to help lengthen the life of regular batteries by reducing the stress on them as buffers. Capacitors blow up pretty good though, so maybe there could be a safety issue with large enough capacitors for such use in EVs? Maybe the techs come a long way since last I'd read up on them, though.
Super capacitors are like solid state batteries. Every year some university claim the have found the holy grail, but there is always a catch that makes mass production not available (usually due too very high cost in production). So super capacitors and solid state batteries are always “in 5 to 10 years” and have been som for the past 25 years.
BYD has been using graphene base supercapacitors for their buses for years.
Does this mean I am way off on my current estimates on the cost of graphene? The last I heard it was available at research prices rather than manufacturing prices.
@@jefflittle8913 As I could remember BYD has been using supercapacitors for overhead charging for buses.
Some graphene supercapacitors already have a fairly high energy density. The problem is the discharge rate - not energy storage. A supercapacitors' voltage drops off sharply as it discharges making them unsuitable for sustained discharge regardless of the energy density.
I've had my eye on EEstor and their supercapacitors for almost 20 years now. Almost here, don't you worry. They said so.
You could add to a Mcdonald's drive-through and they would ask "Would you like a charge with that"? A little window by the rear driver's side of the car opens and a NACS charger is plugged in for 10 seconds. 🤣
Finally, someone with a decent idea. Would you like an upcharge wit dat?
wireless charging while you order you may not even notice it (assuming your car has wireless charging).
@@johnmurdoch6696 You might notice the financial charge.
With how slow McDonalds is in my town, we could just do wireless high amp charging straight to the battery. 😝
The addition of super capacitor's to a traditional battery enables the initial and residual charging to be done faster. It's these that hinder 100% charges and the need to charge between 20-80%
It will even out the top up charge from 80%
Supercapacitors are actually perfect for city buses, since they stop every few minutes anyway, so having a capacitor bank that only lasts 20 minutes is no problem for a bus that can recharge fully at every stop in less than a minute.
Interesting topic. Sam you hit the nail on the head :- the problem is the amount of energy that can be stored. If that amount of energy could be increased 100 fold - it still wouldn’t be sufficient BUT IT IS A STEP IN THE RIGHT DIRECTION and can be built on.
Wrong.
Super Capacitors are already good enough for the rapid absorbing of charge during regen or the rapid discharge of power during acceleration. They allow a reasonable capacity battery pack that can still discharge the huge spike of amps needed during hard acceleration without damaging the battery pack. This is the forte of Supercaps. If you want large energy density then it is better to just improve the charge and discharge capacity of batteries. Actually Li Polymer batteries already have that (20 or 30 C discharge) but they don't have the thousands of cycles of life that LiMnCo or LiFePO4 batteries have. So the other option is to improve the cycle life of Li Polymer batteries.
Would be amazing to have a large supercapicitor as a back up charger to the lithium battery inside the EV to extend the range by another 250 miles
I believe the capacitor is l can store charges and last longer than lithium. So there's no need of it
CRRC zhuzhou already has supercapitor trams since 2015 and now a light rail since last year. Chargeable every 5km.
Capacitor charge faster than batteries but for the same voltage they need a ton more amps to charge the same amount of KWh. And whenever you say more amp it means bigger wires diameter. Unless you switch to more volts and higher voltage than 600V means more insulations around the wires and therefore bigger wires diameter, Unless of course you don't mind electrical discharges that can fry the hands holding on the charging cable connector.
Lawrenceville Plasma Physics uses a super capacitor to discharge into a z-pinch that is proposed to fuse Boron11 and hydrogen(from boranes) without radiation.
Where capacitors could currently help EVs, would be as a small buffer between the motor and battery. So that Regen could always happen at the highest rate needed and to provide that instant burst of power on take off, if required.
But even having a smallish amount of storage in capacitors could also help to reduce the stress on the battery from doing the, discharge, charge, discharge etc of small amounts of energy during the normal driving process. A bit like a small battery being used in a hybrid ICE.
key benefit is it can absorb more of the recuperated energy in regenerative braking. Also, American Clean Energy Group is developing a graphene battery which uses super capacitors, and I've seen a demonstration of it near their Denver, CO facility on Feb 17. Apparently they're relying on a technology to produce graphene developed by a Saudi scientist, and are starting to build factories in the US to benefit from the IRA.
Skeleton Technologies has been making super capacitors for years.
Everyone seems to be talking around the true benefits of supercapacitors (SC). Battery degradation that comes from acceleration ether off the line or passing, merging onto freeways, etc. With a SC you have fast discharge for a short peak of time. Perfectly suited for fast acceleration. By using SC in a similar way as an ICE turbocharger you save on wear and tear of the battery and storage losses. Fast full energy storage from regen braking into SC. Sizing of the SC will also be reduced.
Most of the tech has been worked out for SC on this level. SC can and should be used as turbos right away.
The biggest drawback of super/ultra capacitors is not the energy density at this time. It is the simple fact that their self-discharge rate is very high compared to most chemical storage cells. As-in only one to five days from full to empty.
Yes, they are great at soaking up and delivering astounding amounts of energy for a short time, but cannot be useful as a primary storage bank unless there is a continuous trickle charge style top-up. For this reason they are mostly used as high-energy short-term back-up or to power impulse style machines like neo magnetizing gear.
Sam You Are an amazing story teller. I love Australia GBU
Capacitors are best suited for regenerative breaking. There are some hybrid vehicles that use them already, but generally batteries are a better option. With better technology they also become an alternative to batteries for use in fuel cell vehicles (which are also hybrid vehicles). They need a giant leap in technological advancement before they become an option for plug-in hybrids, let alone full battery EVs.
I recall hearing that 'nuclear fusion is only 10 years away' - 20 years ago. It's *still* 10 years away today....
Capacitors require a much larger volume for a given amount of charge than batteries even if they are lighter so they won't be much good for cars. They'll be more suited to grid and home storage.
Wow, some good Supercapacitor electric news. The Kansas 2023 State Fair had no electric mowers or cars. Just some basic electric golf carts. 🤣
The development EV built by GM (Holden, at Elizabeth in South Australia, around year 2000) used supercapacitors and battery storage. It is a pity this work was killed by the stupidity of GM and the ineptitude of the Australian Government. The Holden engineers gave a presentation on their work to a meeting of the local SAE group in about 2001. I attended the presentation. It seems GM today is still 20 years behind where they should have been.
Hello Nice discussion only you did not discuss how 'improved' the new cap is.
I really love how that article that the supercap reached a record level of energy storage, BUT they do not bother to state what that level is either in Farads or anything. I guess the team wants intere$ted partie$ to come and a$k que$tion$ and they might get more than ju$t an an$wer.
Please discuss the difference between supercapacitors and solid state batteries!
Love to your family Sam....Keep up good work
Thanks so much
Give me a bunch of super capacitors, a high discharge rate, high capacity battery in a backpack and you have a rail gun (also called coil guns) Those folks in those black stealth helicopters will come to pay you a visit. :) All kidding aside, ultra or super caps are great for massive regen braking for very heavy vehicles. They could store a huge charge from one of those Aussie land train trucks during emergency braking and bleed it back into the battery packs so they don't get massive current spikes. Imagine the fun you could have with an electric bike with super caps? I can see a lot of uses for them for all sorts of things.
I ride an electric motorcycle. It’s tough to fit enough batteries to meet range expectations. IF I could recharge the system in under 5 min then my 100km range would be irrelevant to me. Unfortunately, right now, I’m looking at hours to recharge. Light, small, powerful super capacitors would be ideal.
The benefit is more for infrastructure, short "topping up" time means lower queues and less need for charging points. One of the problems with evs is charging. If you could charge in even a few mins there would be no need for home charging or huge range.
Lots of announcements bout new tech and something needs to replace lithium; as Lithium does'nt scale and the cells are heavy. Capacitors are quite dangerous though; one with high power density seems like it would be highly dangerous to use.
What? Like a Tesla fire starter?
I dont see it used on charging the battery through the connector, but to add in regenerative braking, where the massive braking energy could charge the capacitor very quickly and slowly charge the battery, making regenerative breaking more efficiently.
Uses like urban buses which drive short routes and can be charged in minutes while at the terminus. e.g. the Chariot supercapacitor e-bus
Speed of charge is the key here. For a typical 50kWhr battery to charge in 1 minute requires a 3 MEGAWATT power source. Utilising your homes full power capacity you could recharge a 50kW battery in around 3 hours assuming you could maintain that for that length of time (you couldn't - your home system simply can't deliver that load constantly). Charging at home could be done in a reasonable 8-hour overnight period easily but 'on the road' there is no way that charging stations can be built to this level of capacity unless the whole grid is rewired.
Not only is low energy storage capacity a problem, but capacitors tend to "leak", self discharge fairly rapidly over time. Yes. better capacitors will be useful, bu thy simply are not a viable replacement for batteries for long term high capacity storage.
Charging your EV faster than filling an ICE will be a huge plus and remove a barrier purchasing an EV to those who are long range drivers.
Superconductors are perfect for short-term energy storage. Unfortunately, even were it practical to build a superconductor with enough capacity to replace a EV's battery, due to the nature of capacitors, the charge tends to leak over time, probably even faster for high-capacity capacitors, I'd expect, due to the spacing between plates being of necessity so close together. SO, the idea of using them for staged charging into a battery (which can hold a charge much longer than a capacitor) is brilliant, and it might not add much weight to the vehicle, given that the primary component of such a capacitor would probably be carbon.
If I remember correctly from physics lessons in school, nothing passes through the separator in a capacitor. Instead, electrons are moved from one electrode to the other through the wires and a power source.
One question that has to be answered, before any of this can be used to charge an EV: how big a charger, power supply and cables would you need to charge, say 50kWh in 20 secs? I doubt we can use voltages much higher than 800V...
An initial implementation of this has been with the Lambo Sian…although through regen to storage…if I had a few milli to spare I’d let you know it’s practically used…😬
That is exactly why Tesla bought Maxwell Tech 10 years ago. The plan then was for a hybrid battery pack.
I was looking at some supercaps for an electronics project i was making, the problem for me is that they are only rated for a few thousand hour's life, much less than conventional electrolytics.
Sounds bloody great
RC airplanes, watches, etc have been powered for decades by capacitors. Citizen for example has made the Echo-Drive solar powered mechanical movement watch with the entire watch face regardless of color being the solar panel for over a decade and they have been known to reliably run non-stop since their introduction.
At higher power levels though it gets tougher as you usually get fewer hours MTBF unless you add an enormous amount of weight. When they fail they often release all the power stored in them in a fraction of a second which can make for a very dramatic event. What would 50+ kilowatts discharged in a fraction of a second be like during an event such as a collision? By comparison an accidental discharge from a handheld photo flash units capacitor can send a full grown man flying 10 to 20 feet across a room and potentially lethal.
Could be a great advancement if it could be made lightweight and safe.
The presence of supercapacitors technology in electric vehicles could significantly reduce the number of chargers required. By enabling quick charging times of just 1 to 2 minutes, as opposed to the traditional 30 or more minutes, a single charger would be capable of accommodating 10 additional electric vehicles over the same time duration.
Thank you professor dreamalot.
A super capacitor has like 10% the energy density of a battery. Unless they are going to increase the battery weight by 10x you'll never see a difference for charging. Their advantages are with regen to extend the battery life. If they can take that quick burst of power and then discharge for acceleration the battery never sees a load which extends their life.
Supercapacitors wont replace battery packs any time soon, but they can replace the current capacitors in the car charger's full bridge rectifier. This would allow a higher level 1 and level 2 home charging rate since capacitors are the final major component used to smooth out the DC output after some zener diodes flips the negative voltage half of an AC sign wave to be positive. (not exact numbers just to show the difference) So instead of having 110-120 v / 220-240 v battery input it could be 115-120 v / 230-240 v battery input which increases the total KW added at the same amps by increasing the minimal seen voltage in the AC to DC convergen circuit.
Your theory is completely wrong. Charging is limited by the maximum power available and the ability of the battery to accept that charge. Most homes have a maximum power delivery capability (constant) of some 13kW so a 50kW battery takes a minimum of 3 hours - and that's assuming your house supply can deliver that load, constantly (hint - it can't). No amount of additional capacitance in the smoothing circuitry will make a jot of difference. If your battery even COULD charge in (say) 1 minute it would mean a power source of 3 MEGAWATTS - dream on!
It's not a theory it's basic math of the electrical PIER table, power = current x volts. volts is never constant when converting from ac to dc which means kW is also not constant. My statement just states the FACT that the longer the chargers output is in the high side of the voltage range the TOTAL watts will also be higher. If you don't understand that extremely basic electrical concept you have no business replying to any technical post!!!!!!!
@@chetsaxton1526 Basic fact. You can't get more energy out than you put in. No amount of additional capacitance changes that fact. The best chargers in the world might achieve 90% efficiency - connect a capacitor (or a battery - basically the same thing) and the efficiency stays the same - there is NO power increase.
And what the heck does "..as long as the chargers output is in the high side of the voltage range...."??? That's a statement from someone clueless about electricity/energy. LOL.
In my childhood we used to connect these to outlets and watch them explode from the distance. So I am a bit reluctant to have them in my car.
What would happen if you directly plug a lithium battery into a wall socket?
Yes, but is the energy retention good enough to be usable? Are they good enough to be used as energy source to charge the batteries? Or have burst power for performance?
Supercaps have crappy energy density. They are valuable for capturing more regenerative braking energy than batteries can absorb. I think the future is a hybrid of batteries and supercaps.
Do you wear same white shirt? That very eco friendly 😂
You are very funny,
you need to ask Sam if you can be a 'Co-creator'?
His mind is set on higher things than shopping
@@mark-ge8dryeh. Like the number of subscribers 😅😅
If instant charging was Possible with dense batteries that would make Portable Heaters and Portable A.C. Worth investing in and could help alot of Homeless.
I knwe it can be done because I watched: "Back to the Future" which was a 1985 movie that took the world by storm. THAT's why I believe that it can be done.
It would be nice if we could skip the batteries and have a supercapacitor of sufficient energy density to power a car directly! Wow.
Using the frame of a vehicle as a supercapacitor helps in kWh in a EV
I am told by an EV tech that current inverters/capacitors don't have a reputation for longevity beyond 8-10 years. True?
Supercapacitors are very widely used already. Chances are your action camera uses one to maintain the clock while the battery is removed.
Without the actual depth of storage potential, the fast charge really makes no rational sense. It needs the volume to be stored in batteries but capacitors hold little volume of power.
Tesla bought Maxwell Technologies several years ago for their super cap technology.
First of all, the size of supercapacitors are ridiculously huge compared to batteries. Unless it can be made same size as battery while able to hold similar charge capacity, I don't think capacitors will be able to solve the long charging time of batteries.
We all need Instant charging. Dont dismiss anyones right to charge in a micro second.
some of the commentors below can't understand that the goal is to do away with batteries entirely and use super capacitors instead! the end result is a power source that is much lighter than batteries, and not subject to temperature change.
As we go to faster and faster charging batteries, any perceived advantage of capacitors will likely evaporate. Capacitors that work with large swings in voltage simply do not fit well with the circuits that run an EV, which work on nearly constant voltage, by comparison. If they have not yet found a place for super capacitors, it is unlikely that they will in the future either.
Big break like train and trucking
Ambient temperature and pressure superconducting supercapacitors are going to be awsome, can A.I. instruct us how to make them?
Sure. Once a HUMAN inputs all the relevant data.
For now it is like h2, works in the paper
Likely why Tesla bought Maxwell Technologies years ago.
The supercapasitor will be highly explosive.
they've been experiments with capacitors for a long time.
My understanding is that Tesla already uses supercapacitors in the regenerative braking system. Adapting supercapacitors for a faster charge and for high current demand situations should be rather easy for Tesla's engineers. Personally I have my doubts about supercapacitors allowing an EV to charge in less than a minute, that would be a lot of extra equipment and weight just for some small percentage of impatient people to get back on the road. Perhaps as an option that sacrifices part of the trunk space. Still I don't see that work paying for itself over the course of a model year or even two.
Most EVs today have more than enough range for most peoples daily routine. The only time where range anxiety is when the owner might want to go on a long trip. In the US at the least, Tesla has done a superb job of placing charging stations along the most travelled interstate and State highways. Some people may be in a hurry to get back on the road, but as far myself, after 4 to 5 hours of driving I want to stop, use the restroom, get a drink and a meal before I get on the road again. If you have a Tesla and Superchargers are available, in the time that I'm "recharging" my Tesla has recharged enough to take me to the next stop 4 or 5 hours down the road.
So I don't see much of a need for a faster recharge time, 99% of my charging is going to be done at home overnight.
Wrong. Tesla does not use super capacitors.
@@user-iw4ty3jx9m If so, I stand corrected about that point.
I don't currently own a Tesla.
I'm no expert on them.
Furthermore, I certainly haven't been crawling around under any of them.
However, that doesn't in any way change my statement about needing to use supercapacitors to accelerate charging.
I have a storage shed / shop that I power with a cheap solar panel, a bank of 18650 Li-ion cells and inverter.
I put a small group of cheap supercapacitors between the 18650s and inverter.
Since doing that, my little power system takes every power tool I throw at it.
I'm a disabled US military veteran and I don't really put that much on the system. A corded drill or circular saw is about as much as it ever has to power.
Still, before I put the supercapacitors in there, cutting hardwood with the circular saw or putting holes in steel with the drill would tax that system.
I still wouldn't consider trying to rig up supercapacitors on a cheap 2011 Nissan Leaf and I love modifying stuff. I might consider some sort of cooling system for such a Leaf battery, but not supercapacitors.
Supercapacitors problem is volume. They take up a lot of space. They are typically used between the battery and a motor on an EV to even out inconsistent draw and the slow speed of battery discharge. Drawbacks with capacitors other than the volume problem are too rapid discharge. To get around this supercapacitors are set up in an array and fired in series by electronic control so they provide a more appropriate voltage and amperage over time. Think of a supercapacitor this way. A supercapacitor is like a shotgun shell with pellets the size of bullets. You pull the trigger and you get all the pellets at once, while a battery is like a machine gun. When you pull the trigger you get one pellet (bullet) at a time. Also, if supercapacitors and the systems they are implemented in are not designed right they can explode. Not catch fire, but explode. Boom. It happens.
There are a lot of very good things about supercapacitors, many more pros than cons. Supercapacitors are very light, so there is much less of a weight penalty with them as there is with batteries. Also, since the energy is held in an electric field there isn't the degradation you get from having to transform chemicals that you do in batteries. Some supercapacitors have cycle lives in the hundreds of thousands, while even the very best chemical battery can't do more than a few thousand cycles. You can charge up supercapacitors to 100% every time, all the time without thinking about what that will do to them. Supercapacitors can receive energy very fast. This is good for charging, as well as with regenerative braking. DC fast charging a supercapacitor won't degrade it one bit, and you can charge them at millions of watts, no problem. Part of the reason we don't get more out of regenerative braking than we do is because regenerative braking produces too much electricity too fast for it to be fully absorbed by the batteries. Remember, it is a chemical reaction that has to take place. Supercapacitors, on the other hand, can receive that electricity into its field as fast as it is produced, when designed properly. Once the energy from braking is in the supercapacitor it can be used to overcome inertia, the energy needed to get an object from not moving to moving again. Overcoming inertia is where most of the energy in an electric car is used. More efficient regenerative braking leaves the energy in your batter or the capacitors you have that substitute for your batter to be better used to overcome wind resistance, road resistance and mechanical resistance, things that need far less energy to overcome than overcoming inertia. This would add a lot more range to your vehicle.
Looking forward to seeing breakthroughs in this area. A compact supercapacitor that would replace batteries would change EVs in a very significant way.
Morning mate
How about vehicles with a solar roof? Couldn't a supercapacitor make the most efficient use of the solar power?
Triggered me with a discharge through a small wire
Hi Viking!! 😊😊
"Eletric viking" . Got the name right.
... why does the bus a destination sign on saying "satan CDT ESA" ?
am i missing a joke here 😅
That’s why Elon bought the Maxwell Capacitor Company about 4 years ago.
The elephant in the room is how you propose to transfer that much electrical energy into the car that fast? High voltage and high current equal that much power?
That poses an interesting question..
How do you get an elephant into a room? What was the other bit?
While batteries and capacitors both store energy they do it very differently. A battery has a fixed output voltage (more or less) often 1 - 1.5 volts. The fundamental equation of a capacitor is Q = CV where, Q is charge (coulombs), C is capacitance (Farads) and V is Voltage. Capacitors have a maximum voltage before failure. The maximum voltage can be from 1 volt to1,000 volts (usefully). Re-arranging we get V = Q/C. So, the voltage is proportional to the amount of charge. Half charged is half voltage, quarter charged is quarter voltage, fully charged is full (maximum) voltage. It is possible to change a Direct Current voltage to another DC voltage with a DC:DC converter. There are available in semiconductor form. They require switching power transistors. Kind of a mess. The energy storage of a capacitor is (CV^2)/2. This is like the kWh of a battery. To make a supercapacitor look like a battery you would need to incorporate the DC:DC converter into the capacitor assembly. Semiconductors and transistors have a way of blowing up if they are not used perfectly. Someday somebody will perfect this.
I want to see a supercapacitor that constitutes 10%-20% of the car's total energy storage. The idea is that you could send a tow-truck out to a dead car, have it instantly charge the supercapacitor, and then drive on to the next stalled car. Also, I agree with @slowercuber7767 below - this might be interesting for staged charging - pull into a quick charge stall, add 50 miles, then use that to charge the normal batteries.
Ever seen a capacitor go bang. Bome on wheels lol
Even if you had the ability to charge a 100Kw battery in five minutes, your home wiring couldn’t handle it
A very minor point: "a PhD professor" (1:22). If someone is a professor, you really don't need to mention their PhD, as "professor" is much more impressive. While it is very likely that a professor has a PhD, they are no less impressive if they don't. (Indeed, they might well be more impressive. Instead of having a PhD, they might have done something like, for example, having been the first human on the moon.)
No doubt this is the future but this is another 2 decades away
I would be afraid of driving a car energized by supercapacitors because in a crash,
Ia damaged capacitor could short out with ALL the electrical enegry released
in a fraction of a second - leading to an enormous thermal explosion.
Thermal explosion. You may be on to a new energy source. Just feed the so equipped EV'S in to something, let's call it a rEVactivator. Just a thought 😊
🎉
It seems fundamentally impractical to use super capacitors as supplement to batteries. Say you had 10kwh of caps and 50 kWh of batteries. You could charge the 10kwh quick but ultimately only xfer 10kwh to the batteries. Better to just use one or the other.
LOL, no numbers as those would expose there is nothing to see here. First rule of energy storage breakthroughs: there are no energy storage breakthroughs. Just incremental improvements.
Disagree that fast charging isn’t really necessary to compete with ICE refuelling times. People don’t easily adopt a new technology that has elements that are not as good as existing technology. No one wants to go backwards and being stuck at a charger for a significant time just isn’t on in busy time sensitive situations. No, just no, is what many people will feel forced to say. I believe the problem will be solved eventually, but charging times are a stubborn fact that will eventually have to be addressed.
There is allot of research... it takes sooo long to see what actually moves forward. Did you hear about NASA the new solid state battery made with sulfer and selenium 700 mile range and 10 minute charge.
Supercapacitors not essential for the success of the EV industry. Newer battery technologies are already starting to present as viable alternatives to Lithium ion batteries. However researchers can continue their research by all means. The battery vehicle charging / range issues should be fully resolved within the next 5 years. More fast charging stations etc.... After 5 years from now, I doubt there will be an issue needing to be solved in terms of a viable EV future.