5 ms·
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
by teraflop 4y ago
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-Lahiri_Enovix-AABC-Europe-Final-Stand-Alone.pdf https://www.enovix.com/wp-content/uploads/2022/06/Ashok-Lahi...
- organsnyder 4y agoYou're also limited by your thermal management.
- Gigachad 4y agoRunning water cooling in the pack seems like a much easier issue than creating faster charging chemistry though.
- fomine3 4y agoEasy, at a expense of weight and volume.
- rzzzt 4y agoDetachable/external cooling, maybe? You don't need to dissipate that much heat during normal operation.
- helmholtz 4y agoThat'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.
- fomine3 4y agoYes, I'd like to see further efficient developing.
- Maxion 4y agoAll current EVs have liquid cooled batteries already.
- Ashwinning 4y agoExponent.energy does just that
- deleted 4y ago[deleted]
- xwowsersx 4y agoOh, of course. That makes sense. Thank you and thanks for the link.
- waynesonfire 4y agoThere 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.
- deleted 4y ago[deleted]