METHOD FOR DIAGNOSING BATTERY PACK - LG ENERGY SOLUTION LTD

Title:

METHOD FOR DIAGNOSING BATTERY PACK

Document Type and Number:

WIPO Patent Application WO/2022/108399

Kind Code:

A1

Abstract:

The present invention provides a method for diagnosing a battery pack, comprising: a battery pack manufacturing step of manufacturing a battery pack by bonding a battery cell and a wire; a battery cell charging/discharging step of charging/discharging the battery cell through the wire; a battery pack thermal image capturing step of capturing a thermal image of the battery pack; a thermal image reading step of reading, from captured thermal image data, the bonding state of an area in which the battery cell and the wire are bonded; a battery pack magnetic field image capturing step of capturing a magnetic field image of the battery pack; a magnetic field image reading step of reading, from captured magnetic field image data, the bonding state of the area in which the battery cell and the wire are bonded; and a wire bonding state defect determination step of finally determining the bonding state of the area, in which the battery cell and the wire are bonded, by combining thermal image read result information generated in the thermal image reading step and magnetic field image reading result information generated in the magnetic field image reading step, and the method for diagnosing a battery pack can accurately diagnose the bonding state between a plurality of battery cells provided in the battery pack and a plurality of wires connecting the battery cells.

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Inventors:

BAE HYE YUN (KR)
MIN KYOUNG CHOON (KR)

Application Number:

PCT/KR2021/017119

Publication Date:

May 27, 2022

Filing Date:

November 19, 2021

Export Citation:

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Assignee:

LG ENERGY SOLUTION LTD (KR)

International Classes:

G01R31/36; G01J5/00; G01J5/60; G01R31/385; G01R31/396; G01R33/02; H04N7/18

Foreign References:

KR20160059803A	2016-05-27
JP2017511000A	2017-04-13
KR20170079580A	2017-07-10
JPH05172772A	1993-07-09
JP2013036975A	2013-02-21
KR20190011096A	2019-02-01
KR20200056715A	2020-05-25

Attorney, Agent or Firm:

LEE, Kangmin (KR)

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