Method of Computing State of Charge and Battery State of Charge Monitor
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United States of America Patent
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Oct 1, 2015
app pub date -
Mar 25, 2014
filing date -
Mar 25, 2014
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Disclosed herein are a method of computing an estimated SOC and a battery state of charge (SOC) monitor. An embodiment method for computing an estimated SOC includes periodically measuring a present battery current and a present battery voltage. A hysteresis compensation value is then computed based on a previous SOC, the present battery current, and the present battery voltage when a change in battery current exceeds a threshold. The estimated SOC is then determined based on the hysteresis compensation value and a baseline SOC determined based on the present battery voltage and the present battery current.
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