Li-ion Battery State of Charge Estimation and Cell Balancing Using Extended Kalman Filter

The infrastructure for charging Li-on batteries is becoming increasingly important since countries like India have experienced a decline in the number of charging infrastructures. To extend the life of the battery, it is also essential to construct a charger. Estimating the charging of the battery is made possible with the use of Kalman filters, which are also useful for determining the battery's current state of charge. With this estimation, it will be easier to determine how long the battery will last in the future. The battery cell model is utilised in this paper, along with the physical characteristics, which include temperature, and it is evaluated using a passive cell balancing circuit with each parameter. While the implementation is being carried out, MATLAB Simulink/stateflow is being utilised.