from chemistry to pack
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 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
Tesla Cybertruck hasn’t been officially launched yet. It missed yet another internal Launch Target of Q3 2023. But it looks like we will start soon seeing them on the road. Tesla Cybertruck Battery pack is already being discussed in various forums. Recent Q2 Earnings call gave us the term “Cybercell” aka 4680 Gen 2. In … Read more
There is a battery pack density fundamental limit and that is the cell density. Obviously, but how close can we get to that limit? The following plot shows the pack gravimetric energy density plotted versus the cell gravimetric density. Added to this dataset is the fundamental limit. If we calculate the ratio of this we … Read more
What battery packs are at the pareto frontier of the Ragone plot? With a database of over 300 packs we can plot power gravimetric density vs energy gravimetric density. Koenigsegg Regara The Koenigsegg Regera is a PHEV with a combined power of 1,119kW and uses a 4.5kWh 800V liquid cooled battery. The battery is designed … Read more
The Ford Mach E is built on the Global Electrified 1 platform that in itself is a heavily modified version of the C2 platform. The C2 underpins the Focus and Kuga. Based on the fact that the structure was originally designed for internal combustion engines it has required some substantial modification to enable it to … Read more
The 2021 McMurtry Speirling is perhaps even more impressive an electric vehicle than the Rimac Nevera. Note: this is a very limited benchmark with just a few known parameters. This does though show the approach used to look at what the pack configuration might be. Battery Specifications This post has been built based on the … Read more
We often see stepped fast charge limits as shown in this BMW iX3 graph. Often the result of a limited test regime applied by the cell supplier (in this case CATL) to establish the maximum charge current for the cell. These limits are them applied by the BMS team and without more data they have … Read more
The 2021 BMW iX3 was the first electric vehicle off the BMW Gen5 battery system. We see 10 modules with double stacking under the 2nd row seats. The HV distribution and BMS are all located on top of the rear modules. Cooling pipes run through the centre between the modules and all of the HV … Read more
The current batch of electric vehicles built on the BMW Gen5 Battery System. This design needs to survive until BMW swap to the Gen 6 design in 2025. The battery packs in the BEV and PHEV applications across SUV and Sedan platforms uses prismatic cells from Samsung SDI and CATL in a number of sizes. … Read more