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Battery Capacity Monitoring Accuracy and Implementation

This topic gives a systematic overview of battery-capacity monitoring in portable devices. It gives definitions for battery state-of-charge (SOC) at different rates of discharge and temperature and describes how gas-gauge indication accuracy can be measured. Three common SOC-monitoring methods — voltage correlation, current integration, and Impedance Track™ — are discussed along with their common hardware implementations. Implementation of capacity-indication circuits embedded in the battery or in the device is analyzed in relation to these three methods.
Par Yevgen Barsukov, Jinrong Qian
Langue : Anglais
Société : Texas Instruments
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