Method for Estimation State of Health for ESS
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United States of America Patent
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Issued Date -
Mar 27, 2014
app pub date -
May 30, 2012
filing date -
Jun 2, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Provided is a system for estimating a state of health for an ESS, including: a pack voltage calculating processor receiving cell voltage of a battery cell that is the most basic of an energy storage system (ESS) to calculate pack voltage of a battery pack; an SOH estimating processor receiving the pack voltage from the pack voltage calculating processor and setting preconditions for estimating state of health (SOH) to estimate the SOH meeting the preconditions; an SOH calculating processor confirming pack voltage when meeting the preconditions at the time of estimating the SOH and calculating the SOH by using a voltage difference between the confirmed current pack voltage and initial pack voltage; and an SOC compensating processor calculating a state of charge (SOC) compensating capacity by multiplying initial rated capacity by the SOH received from the SOH calculating processor.
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