4 ms·
It's a pretty big claim, 280kWh/m^2. That's 4x the density of proposed iron-air batteries at utility scale (100h storage x 3MW/acre = 74kWh/m^2). However, I don
by jeffbee 3y ago
It's a pretty big claim, 280kWh/m^2. That's 4x the density of proposed iron-air batteries at utility scale (100h storage x 3MW/acre = 74kWh/m^2). However, I don't know if areal energy density is relevant to the market.
- outside1234 3y agoThis battery is for a car, not grid storage (or at least this is my read)
- gorbypark 3y agoI don't think this is for a car. There's a line in the article, "Details have been eagerly anticipated since the company announced it was going into stationary energy storage back in May".
- Retric 3y agoLooks like it’s designed to charge EV’s at 400kW. Perfect for racetracks which may need insane charging rates but aren’t full time charging stations. 5 super cars at 400kW each would normally take an insane grid connection, but you can trickle charge these with solar and or vastly smaller grid connections.
- svnt 3y agoIt isn’t just race cars, this approximate power level is widely available in consumer cars. Hyundai Ioniq-5 and other vehicles can utilize the increasingly common 350 kW connectors — including the Lucid Air, the Porsche Taycan, the Audi E-Tron GT, and the GMC Hummer EV. [0] This enables them to deploy the fastest DC charging in places where the grid cannot support it. It’s a big deal. [0] https://www.greencarreports.com/news/1135771_hyundai-ioniq-5-road-trip-charging-350-kw-connectors-150-kw-just-as-fast https://www.greencarreports.com/news/1135771_hyundai-ioniq-5...
- Retric 3y agoYou can use the battery on top of the existing grid connection. So if you can charge the 790kWh battery pack on a 50kW grid connection you can charge at 400kW + 50kW = 450kW which seems overkill if you only need 350kW. It might also be designed to support multiple EV’s as most cars can only stay at 350kW for a relatively short period.
- jansan 3y ago790kWh for a car? Now that should be sufficient range for everyone. But seriously, this isn't for cars.
- tooltalk 3y ago>> the battery energy storage system (BESS) division of EV supercar company Rima << ESS == stationary Battery Energy Storage System. So this would be comparable to Tesal's Megapack business unit. I mean 790kW in an EV? That's must be for a rocket.
- leetharris 3y agoIt is relevant, some areas will need higher density and others will need less density. For bulk grid storage, batteries will likely be buried and not very dense. For local spot backup for buildings and urban areas you absolutely want the highest power per cubic unit.
- gorbypark 3y agoIt seems to be in line with regular LiFePO4 batteries. Wikipedia is claiming 325 Wh/L^2 for Lithium iron phosphate batteries. This seems to be more about the inverter technology, which I guess is what is different here compared to a bunch of LiFePO4 cells in a box. There's a quote in the article about the inverters allowing them to get the "best footprint in the industry", so I'm guessing they managed to get the inverters down to about 45 litres in volume (or less).
- abecedarius 3y agoHow does per-square-meter work out to be the relevant unit for energy density? Where land is expensive wouldn't you just stack things up?
- newaccount74 3y agoThose batteries would probably be installed in buildings, and you probably wouldn't stack them, so the relevant dimension is area required per kWh.