Comment on The Sodium-Ion Battery Revolution Has Started
gandalf_der_12te@discuss.tchncs.de 1 week ago“cool, let me know when mass production starts.”
(“to the best of my knowledge, that is now, immediately.”)
HiNa opened a 1 GWh sodium-ion battery factory in December 2022. Since then, both BYD and CATL have opened huge sodium-ion battery factories.
davidagain@lemmy.world 1 week ago
Yup. BYD’s 30GWh/year means 1kwh/second!
I can’t resist cancelling the units even though it doesn’t actually make sense because it’s a capacity not a volume, as it were, but that’s a 3.6kw factory!
Krelis_@sh.itjust.works 1 week ago
3.6 MW even. :)
3.6 kW is what a 50cc internal combustion engine typically produces
davidagain@lemmy.world 1 week ago
Here’s my working. There are about 31.56 million seconds in a year, and so
30 GWh/year ~ 31.56 GWh/year = 31x10^9 Wh / year
= 31x10^9 Wh / 31x10^6 s = 10^3 Wh/s = 1 kWh / s = 3600 kWs / s = 3.6 kw
I used the duckduckgo autocalculator just now, and 30/31.56*3.6 is about 3.4, so it’s much closer to 3.4kW.
(It’s not power output, it’s manufactured storage output. I think of it as like a factory that produces 3.4 litre capacity jugs per second, but they’re not jugs, they’re actually batteries.)
If these were sold at lithium ion prices, that would net them about 120*3.4 USD/s, or roughly 1.5 million USD/s.
Or to calculate another way, they could make a 120kWh battery, (which would give a family car a range in the region of 450 miles), every two minutes.
Krelis_@sh.itjust.works 6 days ago
I appreciate the work :)
1 kWh/s (with you there) = 3600 kWs / s = kJ/s = kW!
= 3600000 J/s (=W) = 3.6 MJ/s (=MW)