new battert technology - 2 min recharge

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marty11
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new battert technology - 2 min recharge

Post by marty11 » Tue, 14 Oct 2014, 14:33

New battery technology will allow ev's to charge to 70% in 2 minutes

Heres the link... New Battery tech allows 70% charge in 2 minutes

..of course it will be about 2-3 years to Market. .patents are in place ..

NB : to recharge might need a few amps! Imagine saying at home.. "honey, we may have to upgrade the car charging station, a little"

On the other hand, everyone is aware of Teslas Super Charger network across the US, and now starting in asia and Europe.

So that kind of highway charging approaching typical gasoline refilling times, is nice to dream about, and will occur.. quicker overseas though.

So what do people think of this?
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Johny
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new battert technology - 2 min recharge

Post by Johny » Tue, 14 Oct 2014, 14:47

It sounds really great. Shame that they feel the need to fib about the cycle life of current Lithium cells - 500 cycles - not quite right.
Still good news though and it looks to be a credible report.

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new battert technology - 2 min recharge

Post by Richo » Tue, 14 Oct 2014, 20:22

You can already buy Lithium Titanate cells.
viewtopic.php?title=lithium-titanate-lt ... ies&t=4188

The 2min recharge gets pretty pointless when you start talking eV sized packs.

So the short answer is NO but the long answer is YES.
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new battert technology - 2 min recharge

Post by EV2Go » Fri, 24 Oct 2014, 18:47

Johny wrote: It sounds really great. Shame that they feel the need to fib about the cycle life of current Lithium cells - 500 cycles - not quite right.
Still good news though and it looks to be a credible report.
Was thinking the same thing. If they are underquoting existing technology to make their product sound good how much are the over quoting their technology to make it sound better...

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new battert technology - 2 min recharge

Post by EV2Go » Fri, 24 Oct 2014, 18:50

Richo wrote: You can already buy Lithium Titanate cells.
viewtopic.php?title=lithium-titanate-lt ... ies&t=4188

The 2min recharge gets pretty pointless when you start talking eV sized packs.
Was also thinking that as well. The batteries they are showing are tiny. How can you possible expect a full EV sized pack to be charged anywhere near that kind of time.

Not sure if they think we are fools but the input of the battery is directly related to the output of the grid system providing it. So can we realistically expect anything short of hours to charge at home?

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new battert technology - 2 min recharge

Post by mikedufty » Fri, 24 Oct 2014, 20:52

You don't need fast charging at home. The appeal of this sort of thing would to be allow refuelling on the road in a similar time to filling a petrol tank.

Actually having charging stations able to charge the current battery technology at its fastest supported rate would probably be more useful in Australia at the moment.

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new battert technology - 2 min recharge

Post by EV2Go » Fri, 24 Oct 2014, 21:32

mikedufty wrote: You don't need fast charging at home. The appeal of this sort of thing would to be allow refuelling on the road in a similar time to filling a petrol tank.
Regardless of if you need a quick charge at home or not, the premise behind it is full of speculation and inaccuracies.

My point is they try to make it sound like the impossible is possible and when their reality is realised it is well short of the mark.

Even if the batteries could take the heat that such a massive influx of electricity would provide how do you set up an infrastructure to support it.

Let's say you have a 30kWh pack and you need to put 20kWh back into the pack. In two minutes that would mean you would need to pump 10kWh into the pack per minute.

I'm sure every road side stop is going to be able to provide that supply and the vehicles wiring capable of carrying it...

As much as I would love to live in a fantasy world where these kind of figures are possible. How would a BMS have any chance of controlling that kind of power input?

I might buy that one day a reasonable sized pack could take us a 1000klms but I cant ever envisage it being charged in a few minutes.
Last edited by EV2Go on Fri, 24 Oct 2014, 10:38, edited 1 time in total.

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new battert technology - 2 min recharge

Post by Richo » Mon, 27 Oct 2014, 20:51

And just to be clear that's a 600kW charger for the above example.

I think the race car I linked to with Lithium titanate had a 200-250kW charger.
But we are talking the race scene not a charge station in a country town of Australia.
And still well short of 600kW...
So the short answer is NO but the long answer is YES.
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new battert technology - 2 min recharge

Post by Richo » Mon, 27 Oct 2014, 20:54

The main issue I have with lithium titanate is you will hit the shelf life of the battery well before the cycle life in an ev.
it would need to be charged a number times per day to get value for money.
Postie bike perhaps?!?

Give the weight/size LiFePO4 is still a better option for a car in the long run over titanate.

So the short answer is NO but the long answer is YES.
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Richo
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new battert technology - 2 min recharge

Post by Richo » Mon, 27 Oct 2014, 21:00

EV2Go wrote: The batteries they are showing are tiny.

Last I looked they can be had in the 18650 size.
Which still is a pain for an eV builder.
I designed a few pack sizes up and decided they weren't feasible yet.
So the short answer is NO but the long answer is YES.
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