As the green movement increases in popularity, more and more electric vehicles (EVs) of all kinds—from electric scooters to cars to buses and cargo trucks—will grace the roads. Power designers will be challenged to provide systems that can be adapted to a wide variety of different types of batteries and vehicles with vastly diverse performance requirements. This white paper examines the key considerations that are best suited to meeting the challenges of including battery performance, lifespan and, of course, safety while designing intelligent battery management and charging systems.
EV battery packs are made up of multiple cell modules arranged in series and in parallel. Arranged around the battery pack and throughout the vehicle, the battery management system (BMS) is comprised of several components, including monitoring components close to the battery cells themselves, one or more power-conversion stages dictated by the needs of the vehicle, and intelligent controllers or embedded processors placed at strategic locations in the architecture to manage various aspects of the power subsystem.