Validation Analysis of a Distributed Battery Management System Implementation : Invited Paper

In this work, a hardware implementation of a distributed Battery Management System was carried out. This hardware is formed by a current and voltage monitor, a SD card, and a microcontroller, in which a remaining discharge time prediction algorithm based on an extended Kalman filter was programmed. The Kalman filter estimates the state of charge and another dynamic variable that allow to use the Lambert function to find the remaining discharge time from the end-of-discharge voltage value. By using a commercial battery, the performance of the algorithm was evaluated at different discharge rates. The experimental results show that the proposal is suitable to be implemented on a embedded system or integrated into an application specific integrated circuit to be coupled in a battery pack.