METHOD FOR ESTIMATING STATE OF HEALTH OF BATTERY

Title:

METHOD FOR ESTIMATING STATE OF HEALTH OF BATTERY

Document Type and Number:

WIPO Patent Application WO/2020/184812

Kind Code:

A1

Abstract:

Provided is a method for estimating the state of health of a battery according to various embodiments. A method for estimating the state of health of a battery according to one embodiment, comprises: a step for measuring the voltage and the current of a battery in use to periodically generate a voltage value and a current value; a step for updating, in real time, the value of a G parameter and the value of an H parameter representing the current state of the battery from the voltage value and the current value using an adaptive filter; and a step for estimating, in real time, the state of health of the battery using the preset initial value and end value of the G parameter and the current value of the G parameter. The G parameter is a parameter representing the sensitivity of a voltage with respect to a current change of the battery, and the H parameter is a parameter representing the effective electric potential determined by local equilibrium electric potential distribution and resistance distribution in the battery.

Inventors:

LIM BYEONG HUI (KR)
HWANG YONG JUN (KR)
RAYAPPAN CHRISTOBER (KR)
KIM GI HEON (KR)
KIM JAKE (KR)
PAEK SUNG WOOK (KR)

Application Number:

PCT/KR2019/016610

Publication Date:

September 17, 2020

Filing Date:

November 28, 2019

Export Citation:

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Assignee:

SAMSUNG SDI CO LTD (KR)

International Classes:

G01R31/392; B60L58/16; G01R31/36; G01R31/367; G01R31/382; G01R31/396

Foreign References:

US20170242077A1	2017-08-24
KR20130126231A	2013-11-20
JP2006058114A	2006-03-02
KR20180115817A	2018-10-24
JP2012063251A	2012-03-29

Other References: