An Incremental Voltage Difference Based Technique for Online State of Health Estimation of Li-ion Batteries

urate state of health (SOH) estimation of rechargeable batteries is important for the safe and reliable operation of electric vehicles (EVs), smart phones, and other battery operated systems. We propose a novel method for accurate SOH estimation which does not necessarily need full charging data. Using only partial charging data during normal usage, 10 derived voltage values ( v_sei ) are collected. The initial v_sei point is fixed and then for every 1.5