Electric vehicle battery capable of 98% charge in less than ten minutes

Re:Electric vehicle battery capable of 98% charge in less th... by teraflop on Tuesday June 14, 2022 @12:38AM (#31734799)

The capacity of an individual cell doesn't really matter, because you can linearly scale up the energy capacity and power. If you can charge a single cell to 80% in 5 minutes, then you can do the same for many cells simultaneously, as long as your power source doesn't become the bottleneck. From the perspective of battery technology, what matters is energy density, power density, and of course manufacturing cost.

But for what it's worth, the linked presentation[1] includes some test results from 2.7Ah cells, which is about the same as the capacity of a common 16850 cylindrical cell.

[1]: https://www.enovix.com/wp-content/uploads/2022/06/Ashok-Lahi...

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by waynesonfire on Tuesday June 14, 2022 @12:58AM (#31734908)

There are many more variables that matter that I can think of,

How long battery holds charge

How it behave at various temperatures

How it degrades over time

How it behaves in its discharge life cycle, e.g can you drain it to 30 percent? 20? Do you have to charge it to 100?

Hence, why we havnt seen radical innovation in the battery space in the last 20 years though we see articles like this all the time.

I'm still buying lithium etfs.

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by organsnyder on Tuesday June 14, 2022 @12:46AM (#31734832)

You're also limited by your thermal management.

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by Gigachad on Tuesday June 14, 2022 @01:05AM (#31734938)

Running water cooling in the pack seems like a much easier issue than creating faster charging chemistry though.

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by fomine3 on Tuesday June 14, 2022 @01:13AM (#31734983)

Easy, at a expense of weight and volume.

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by helmholtz on Tuesday June 14, 2022 @01:26AM (#31735060)

That's just called Mechanical Engineering. All machines involve compromises. An internal combustion engine needs oodles of these kinds of compromises. It's idiotic thermal efficiency itself is a big expense if you think about it.

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by fomine3 on Tuesday June 14, 2022 @01:40AM (#31735138)

Yes, I'd like to see further efficient developing.

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by Maxion on Tuesday June 14, 2022 @02:36AM (#31735455)

All current EVs have liquid cooled batteries already.

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by rzzzt on Tuesday June 14, 2022 @01:22AM (#31735038)

Detachable/external cooling, maybe? You don't need to dissipate that much heat during normal operation.

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by Ashwinning on Tuesday June 14, 2022 @01:14AM (#31734989)

Exponent.energy does just that

[ Parent | on HN ]

Re:Electric vehicle battery capable of 98% charge in less th... by xwowsersx on Tuesday June 14, 2022 @12:49AM (#31734850)

Oh, of course. That makes sense. Thank you and thanks for the link.

[ Parent | on HN ]