METHOD FOR ESTIMATION STATE OF HEALTH FOR ESS

Title:

METHOD FOR ESTIMATION STATE OF HEALTH FOR ESS

Document Type and Number:

WIPO Patent Application WO/2012/165842

Kind Code:

A2

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.

Inventors:

LIM JAE HWAN (KR)

Application Number:

PCT/KR2012/004231

Publication Date:

December 06, 2012

Filing Date:

May 30, 2012

Export Citation:

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Assignee:

SK INNOVATION CO LTD (KR)
LIM JAE HWAN (KR)

International Classes:

G01R31/36; G01R19/165

Foreign References:

KR100740113B1	2007-07-16
KR100889179B1	2009-03-16

Other References: