BMW Gen6 Battery System

BMW 46xx cylindrical cells

Cell Specifications the first outing for the Tesla 4680 is without Silicon in the anode, this might be a move to reduce costs, reduce the cell expansion or to present a strong energy uplift roadmap for the vehicle This lower height cell will have been selected for use in saloon / crossover type vehicles. However, … Read more

Inputs to Pack Sizing

cyantron modules, bms and packs

Lets look at the inputs to pack sizing, what do we need to know in order to size a pack? Usable Energy [kWh] Discharge C-rate or power [Crate or kW] Ambient temperature [°C] Minimum voltage [Vmin] Maximum voltage [Vmax] Cooling power [kW] At the early stage you don’t need to think about total energy, concentrate … Read more

Modular vs Dedicated BEV Platform

modular vs dedicated BEV platform

The modular vs dedicated BEV platform is an interesting problem facing automotive OEM’s as they balance their need to produce Internal Combustion Engine (ICE) vehicles and Battery Electric Vehicles (BEV). The trouble is we are in a world that still wants both vehicle options and vehicle platforms are expensive. Modular Platform One body design and … Read more

CATL Qilin CTP 3.0

The CATL Qilin CTP 3.0 is their second generation cell to pack design. Qilin is named after a legendary creature from China. The latest CATL post suggests that this integrated system can increase the energy density to 255Wh/kg for ternary battery systems (NMC, NMCX etc), and 160Wh/kg for LFP battery systems. Essentially removing the overheads … Read more