APPARATUS AND METHOD FOR DIAGNOSING STATE OF BATTERY IN CELL UNIT

Title:

APPARATUS AND METHOD FOR DIAGNOSING STATE OF BATTERY IN CELL UNIT

Document Type and Number:

WIPO Patent Application WO/2020/054924

Kind Code:

A1

Abstract:

The present invention relates to an apparatus and a method for diagnosing the state of a battery. The apparatus for diagnosing the state of a battery in a cell unit, according to the present invention, comprises: a power transform unit for applying a predetermined pulse waveform to the battery; a measurement unit for measuring the maximum voltage value and the minimum voltage value in a cell unit of the battery according to the applied predetermined pulse waveform; and a control unit for calculating the cell-unit internal resistance value of the battery on the basis of the difference between the maximum voltage value and the minimum voltage value.

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Inventors:

CHOI JINHYEOK (KR)
LIM JIHUN (KR)

Application Number:

PCT/KR2019/001215

Publication Date:

March 19, 2020

Filing Date:

January 29, 2019

Export Citation:

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Assignee:

KOREA ELECTRIC POWER CORP (KR)

International Classes:

G01R31/396; G01R19/165; G01R31/385; G01R31/389

Foreign References:

KR20180066939A	2018-06-20
JP2001250590A	2001-09-14
KR20000003044A	2000-01-15
JP2009244180A	2009-10-22

Other References:

PARK, JOONAM ET AL.: "Computational Simulation on Power Prediction of Lithium Secondary Batteries by using Pulse-based Measurement Methods", KEPCO JOURNAL ON ELECTRIC POWER AND ENERGY, vol. 1, no. 1, September 2015 (2015-09-01), pages 33 - 38