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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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높은 에너지밀도의 리튬 이온 배터리는 산업분야에서의 사용 빈도가 높아지는 추세이다. 사용 빈도가 높아짐에 따라 배터리의 안정성이 큰 이슈로 떠오르고 있다. 배터리의 안정성은 배터리 온도에 밀접한 영향을 받으므로, 배터리 열 관리시스템이 중요한 요소로 작용하게 된다. 이를 위해 본 연구에서는 배터리 충 방전 시 발생되는 열에 대응 가능한 냉각 방법에 대한 해석적 연구를 소개한다. 배터리 성능에 영향을 주지 않는 최적의 온도를 목표로 하여 상변화 물질을 이용한 냉각 전략을 선정한다. 냉각 전략은 수치해석을 통해 구현하고 배터리 온도를 지표로 성능 평가를 실시한다. 연속적인 배터리 충전/방전 주기를 사용 조건으로 하고 5개의 배터리로 구성된 배터리 팩 단위의 해석을 진행한다. 상변화 물질을 이용한 냉각 방법이 대응할 수 있는 열 부하 수준을 확인한다. 해석에 사용된 모델은 배터리를 집중계로 취급하는 lumped model 과 열-전기화학 연성해석을 하는 모델을 사용한다. 보다 정확한 해석인 열-전기화학 연성해석으로 최대온도 관점에서 열관리 시스템에 관해 평가한다.
목차
제 1장 서론 ··············································································································11.1 연구배경 및 목적 ···························································································11.2 연구 동향 ·······································································································31.3 연구 내용 ·······································································································5제 2장 수치모델 ······································································································62.1 집중계 모델 ···································································································62.2 배터리 종류 ···································································································92.3 열-전기화학적 모델 ·····················································································142.3.1 배터리 작동원리 ························································································152.3.2 배터리 리튬이온 보존 ··············································································192.4 열발생모델 ·····································································································202.5 계산조건 ·········································································································202.6 배터리 연결조건 ···························································································22제 3장 배터리 열관리 시스템 ············································································233.1 배터리 열관리 시스템 ·················································································233.1.1 공랭식, 수냉식 ····························································································233.1.2 PCM(상변화물질) 활용 ············································································263.2 열관리 시스템 전략 ·····················································································263.2 해석모델 검증 ·······························································································30제 4장 해석결과 ······································································································324.1 해석결과 ·········································································································32제 5장 결론 ··············································································································37참 고 문 헌 ············································································································38ABSTRACT ·················································································································42
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