Toshiba SCIB battery recharged in ... 6 minutes (to 500kW ...)

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Toshiba SCIB battery recharged in ... 6 minutes (to 500kW ...)




by Christophe » 10/10/17, 14:57

We were talking about it the other day here: Transportation-electric / car-and-electric-transport-the-fil-of-news-t14813.html it is now "official"!

The battery war has started: Toshiba has just presented a battery that would recharge in just 6 minutes. Almost the time of a full ...

Toshiba also wants its share of the electric car cake. The Japanese have just presented a new generation of batteries that would be able to recharge up to 300 km of autonomy in just 6 minutes.

Say "Scib"

Called Scib, this new type of battery uses a new technology, namely anodes made from titanium niobium oxide. This new material would significantly increase energy density while displaying better performance in terms of charge with a duration divided by three compared to the lithium-ion batteries currently used. As a result, this battery is "much less likely to degrade during an ultra-fast charge" as it may occur more and more. The manufacturer also mentions non-degraded operation in cold weather, down to -10 °. The first cells tested at 50 Ah would thus retain 90% of their initial capacity after 5000 charge / discharge cycles, the manufacturer said in a press release.

320 km in 6 minutes

Still according to Toshiba, this new battery which would be primarily intended for the world of the electric automobile could thus recover up to 320 km of autonomy in just 6 minutes. What to approach the duration of a full of a conventional vehicle. And apparently, it's really serious because the Japanese company plans to market it in 2019 ... Can't wait for it!

toshiba battery-2.jpg
toshiba-batterie-2.jpg (88.13 KB) Viewed 4027 times


https://www.moniteurautomobile.be/actu- ... nutes.html

The article omits to speak of the instantaneous power necessary ... widely mentioned on these forums... (because here we still think a little more than just copy and paste press releases ...)

A 50 kWh battery (which makes about 50 / 0.15 = 330 km in the best case) requires a power of 500kW to be recharged in 6 minutes (1/10 of an hour) ...or a subscription under 230V of 2200 A ...

I let you search the subscription price and the section of cables required : Cheesy:
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Re: Toshiba SCIB battery recharged in ... 6 minutes (at 500kW ...)




by Gaston » 10/10/17, 15:26

This SCiB battery seems very interesting, especially by its longevity.

As you point out, fast charging is anyway limited by the infrastructure available.

Furthermore, if we dig a little, this technology does not seem so perfect for the electric vehicle: the mass energy of the cells is only 50Wh / kg. (the Toshiba site takes care not to give the figure, but it is easily calculated with the volume energy, the dimensions and the weight of the cells : Mrgreen: ).

A 20 kWh battery would weigh 400kg and a 50kWh a ton (not counting the structure supporting the cells).
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Re: Toshiba SCIB battery recharged in ... 6 minutes (at 500kW ...)




by Christophe » 10/10/17, 16:19

Very good remark (which again confirms that the journals of the "specialized" press are content to copy paste "scoops" ... and that's a shame! Where has Jean Luc Moreau gone?) ...

To complete your remark, we are in the same scenario with the famous and very promising Lithium Air but it is the opposite case: good mass energy but very low mass power... Here are some figures:

a) a mass energy that can compete to see exceed liquid fuels, all corrected returns, so excellent!

In theory, lithium-air batteries know how to store 3,5 kW.h / kg. However due to technological constraints (substrate, battery insulation ...), the actual energy density will most likely be lower. The density of 1,7 kW.h / kg supplied to the wheels can however be considered because of a better efficiency of the electric motors compared to the thermal engines


https://fr.wikipedia.org/wiki/Accumulateur_lithium-air

b) very low mass (and volume) power compared to current Lithium batteries ...

low specific power (200 W / kg - 500 W / L)


https://fr.wikipedia.org/wiki/Accumulat ... ithium-air

In comparison, some current Lipo (the best) can provide up to 95 times their peak current rating!

A current Lipo which is around 0.2 kWh / kg ...can therefore supply power to 95C of 19 kW / kg !!

It's really huge and it's 19 / 0.2 = 95 times what can provide a Lithium Air !! And 5 kg of battery can therefore provide, in peak, not far from 100 kW!


But ok at these levels of discharge current, the batteries do not last very long (200 to 300 cycles max) ... but still ...

A lipo which would only work in 5C (we do not find below 15C on the market) would provide a power of 0.2 * 5 = 1 kW / kg ... It is still 5 times more than a Lithium Air :(

This means that we will not be able to draw a lot of power per kg of lithium air battery: they will therefore be reserved ... for low power or static installations, which finally cancels all the benefit of an interesting mass energy :(

And to finish the comparative calculation, a Lithium Air can work with 200 / 1700 = 0.12 C ... it is 800 times less than a Lipo 95C ...

After the research ... but all the same ... the Lithium Air revolution will not be possible any time soon ... : Cry:
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Re: Toshiba SCIB battery recharged in ... 6 minutes (at 500kW ...)




by Gaston » 10/10/17, 17:08

Christophe wrote:After the research ... but all the same ... the Lithium Air revolution will not be possible any time soon ... : Cry:
I answered here
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