Standard smart batteries for consumer applications

Abstract

Accurately predicting the battery state of charge requires resident intelligence that utilizes cell models of performance along with real time data (current, voltage, temperature). To facilitate the transfer of that information to devices, Duracell and Intel have jointly developed specifications for intelligent battery communication which they are proposing as industry standards. Two main specifications describe the electrical protocol (System Management Bus) and the data content (Smart Battery Data), while secondary specifications describe chargers, software and multiple battery systems. The electronic hardware necessary inside the battery to meet those specifications is anything but standard; it is expected to be an active area of competition, manufacturers will continue to emphasise differences in cell chemistry, algorithms, and innovative charge control.<>