As per my knowledge cell matching is done right at the battery manufacturing stage and if done properly then there would not be any need of such a balancing system at the operational level. However there is no harm but only advantage in employing such BMS for every battery stack in an EV.
This article describes clearly the real life problem of the multiple batteries connected. The replacement cost of these batteriies are high there is a good scope for R&D in this area to improve the battery life by employing intelligent chage discharge circuits.
NASA's Orion Flight Software Production Systems Manager Darrel G. Raines joins Planet Analog Editor Steve Taranovich and Embedded.com Editor Max Maxfield to talk about embedded flight software used in Orion Spacecraft, part of NASA's Mars mission. Live radio show and live chat. Get your questions ready.
Brought to you by