Week 7 State of charge estimation

Coulomb counting Definition

Measures the discharging current of a battery and integrates the discharging current over time in order to estimate SOC.

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Counting For SOC Estimation

The SOC of a battery, that is, its remaining capacity, can be determined using a discharge test under controlled conditions. The voltage method converts a reading of the battery voltage to the equivalent SOC value using the known discharge curve (voltage vs. SOC) of the battery.