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리튬 이차전지의 양극 활물질 종류에 따른 에너지밀도 및 열폭주 전파 분석에 대한 수치해석적 연구

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Alternative Title
Numerical analysis of energy density and thermal runaway propagation analysis according to the type of cathode active material of lithium secondary battery
Abstract
While there are voices of concern from various points about theseriousness of recent climate change and ecosystem damage, a global crisiscaused by Corona 19 is intertwined, and a change of perception is takingplace in the existing industries. Developed countries have been orientedtoward carbon neutrality (Net-Zero), which is spreading various green energyon the wave of the 4th industrial revolution.As a part of the new energy business, research to convergence of newenergy sources is continuously being attempted, while medium and large-sizebattery devices developing, interest in energy storage devices is rapidlyincreasing. In Korea, the Korean version of the Green New Deal is also beingpromoted, selecting green mobility as one of the key factors and spurring thespread, which is directly connected to the spread of lithium-ion batteries.In this study, the NCM battery and LFP battery in the same battery packspace of T company's electric vehicle model A are configured optimally using3D Modeling, and the energy density calculation according to the quantity isnumerically analyzed. In addition, by using a fluid analysis program, athermal runaway simulation for each battery cell and module unit wasconducted, and data on stability were secured to predict future R&Ddirections in the Li-Ion battery industry.When comparing the energy density of the NCM811(21700) battery andthe LFP (3.2V, 120Ah) battery on the same platform of T company's electricvehicle model A, the efficiency of the NCM811 battery was predicted to bearound 24% high.
Author(s)
강명보
Issued Date
2021
Awarded Date
2021. 2
Type
Dissertation
URI
https://oak.jejunu.ac.kr/handle/2020.oak/23527
Alternative Author(s)
Kang, Myung Bo
Affiliation
제주대학교 대학원
Department
대학원 에너지화학공학전공
Advisor
김남진
Table Of Contents
I. 서 론 1
II. 이론적 배경 6
1. 리튬 이차전지의 원리 및 구조 6
1) 일차전지와 이차전지의 차이 6
2) 리튬 이차전지의 원리 6
3) 리튬 이차전지의 구조 7
2. 리튬 이차전지 양극 활물질의 종류 및 특성 10
3. 리튬 이차전지의 열폭주 현상 15
III. 해석 방법 22
1. 해석 대상 모델 분석(T사(社) 전기차 모델 A) 22
1) 배터리 사양 22
2) Battery pack base plate 사양 24
3) Battery case base plate 설계 25
4) Cell to Pack technology 26
2. 배터리 에너지밀도 분석 27
1) 배터리 셀의 용량 28
2) 에너지 밀도 28
3) 배터리 팩의 용량 및 무게 28
4) LFP 배터리 종류 선정 29
3. 배터리 열폭주 전파 분석 32
IV. 해석 결과 및 토론 33
1. NCM, LFP 배터리 에너지 밀도 분석 결과 33
2. NCM, LFP 배터리 열폭주 전파 분석 결과 38
V. 결론 48
참고문헌 51
감사의 글
Degree
Master
Publisher
제주대학교 대학원
Citation
강명보. (2021). 리튬 이차전지의 양극 활물질 종류에 따른 에너지밀도 및 열폭주 전파 분석에 대한 수치해석적 연구
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Faculty of Applied Energy System > Energy and Chemical Engineering
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