from chemistry to pack
Nigel
How does the choice of cell format influence battery pack mass? The three main cell formats: Cylindrical, Prismatic and Pouch. There are pro’s and con’s with each. One of the most significant differences is the amount of mechanical support required. The pouch cell needs the most support and fixing, followed by the prismatic and the … Read more
A quick look at what we think we know about the Ford Mach-E LFP battery. Is this: The InsideEVs [2] article puts the weight at 37lb lighter than the extended range NMC pack, giving the LFP pack a weight of 653kg. The nominal voltage on the nameplate is 347.8V and CATL LFP cells have a … Read more
The Mercedes AMG HPB80 is a dielectric cooled PHEV battery pack. First introduced in detail by Mercedes in 2021 this battery pack is worth a more detailed review. We know a number of the specifications for this pack and hence can estimate others. However, we do not know the cell that is used in this … Read more
The 2024 Hyundai Ionic 5 N has revised battery chemistry to increase it to 84kWh. The battery operates at a nominal 697V and can deliver a peak of 585kW. Note: details of the pack and cell are very limited, hence we would like to find more data from which we can build estimates and model … Read more
The WeLion SHE350-106Ah solid state battery cell is very close in specifications to that used in the 150kWh NIO ES6. The cell is made by Beijing WeLion New Energy Technology Co. Ltd and at ~360Wh/kg is at the leading edge of current 2023 production battery cells. This cell has a slightly lower energy density at … Read more
We have seen Cell to Pack and Cell to Body pack designs, now we are seeing talk of Electrode to Pack. The first to talk about this perhaps are 24M Technologies with what they have trademarked as their ETOP system. In lithium cells with a liquid electrolyte this arrangement would be an issue as the … Read more
The 2020 launch of the Volvo XC40 Recharge was in FWD and AWD. The battery pack usable energy options were 67kWh and 75kWh. China vehicles use a CATL prismatic cell and the rest of the world used an LG pouch cell. This later changed with Australia also getting the CATL based design. This post has … Read more
The BYD Blade cell is an overall design philosophy that enables high system level energy density with LFP chemistry. This is enabled by assembling the cells all together at pack level, creating a Cell to Pack design. The BYD blade cell to pack design is interesting as it has been designed by a company that … Read more
The Rivian Max battery pack has been mentioned in many articles as 180kWh. However, Rivian have now released details of the upgrade and it is a cell upgrade from the Samsung 50G to the 53G. Summary Note: in addition it appears that Rivian have made some efficiency gains and hence the numbers are not completely … Read more
This is Rimac’s first move into the stationary energy storage market, their first product is the SineStack. The interesting aspects of this design is the integrated inverter, active balancing and the ability to switch the load on a module basis to extend the working lifetime. Specifications This post has been built based on the support … Read more