Measurement Of Power Flow And State Of Charge Of Li-Ion Battery Pack For Hybrid/Electrical Vehicle Application

Battery monitoring system is an integral part of Lithium-ion battery pack for hybrid vehicles application can use to monitor and display the output of the battery in good condition, including current, voltage and state-of-charge (SOC). The simulation of this project is to estimate by using current and voltage level employing different algorithm. A circuit will be build consist a shunt resistor to measure the voltage and current, and this variable will ultimately use to provide a measure of SOC. This simulation will be compare with the real data through the test drive of the vehicles. Several SOC calculation method already identified and studies and Coulomb counting is chose to apply through coulomb counting method for SOC estimation. Currently voltage and current transducer have been purchase for the next stage of building the circuit.
Key words – battery monitoring system, SOC and Coulomb counting