Title

Magnetic Field Imaging of Fault-Simulated Li-ion Batteries for Diagnostic Purposes

DGIST Authors

Mingyu Lee ; Chanyeon Kim ; Hongkyung Lee

Advisor

김찬연

Co-Advisor(s)

Hongkyung Lee

Issued Date

2025

Awarded Date

2025-02-01

Citation

Mingyu Lee. (2025). Magnetic Field Imaging of Fault-Simulated Li-ion Batteries for Diagnostic Purposes. doi: 10.22677/THESIS.200000848048

Type

Thesis

Description

Li-ion batteries, Battery diagnosis, Fault-simulated batteries, Magnetic field imaging, Current distribution

Table Of Contents

List of Contents
Abstract i
List of contents ii
List of table iii
List of figures iv

Ⅰ. Introduction 1
1.1. Principles of Li-ion batteries 1
1.2. Growing importance of safety of LIBs 1
1.3. Imaging techniques for diagnosing battery failures 2
1.4. Research goal 4

II. Experimental Method 5
2.1. Pouch cell assembly 5
2.2. Electrochemical cell testing 6
2.3. MFI analysis 6
2.4. Current distribution map imaging 7
2.5. Characterizations 7
2.6. Computational method 8

III. Result and Discussion 10
3.1. MFI analysis of current-carrying 1D, 2D objects 10
3.2. MFI analysis of pouch cells and current flow patterns 12
3.3. MFI study of fault-simulated batteries (FSBs)· 13
3.4. MFI offset method using counter wise current flowing plate 15

IV. Conclusion 17

References 36
Summary in Korean 39

URI

http://hdl.handle.net/20.500.11750/58030
http://dgist.dcollection.net/common/orgView/200000848048

DOI

10.22677/THESIS.200000848048

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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