Introduction
We are a small consultancy and have been involved with Battery management of Lithium cells since 2005. Prior to this we were involved with data collection and processing.
We have been involved in interfacing Battery systems to various electric vehicles including Busses, Vans, Trucks, Porche, Earth moving equipment. From this knowledge we are in the process of designing a new battery management system that corrects problems in the previous designs I have worked on.
These problems include susceptibility to electrical noise, high BMS current consumption, poor balancing, poor fuel gaugeing..
Hugh Robertson, the Engineer Manager has designed battery systems for a variety of vehicles including the BMS used on the Smith Electric Vehicles, Modec Vehicle, Allied (E7) ZEV taxi, RUF electric Porsche, deutz hybrid vehicle (500v ) Rampini Bus (800v).
Over the past 2 years he has been working on multiple Lithium battery systems for trucks. This has involved interfacing to Boston Power, Dow-Kokam and A123 batteries. Multiple battery systems gives redundancy and if one cell fails the system is still usable. In most systems one cell failure results in a system failure.