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휴대 전자기기용 Li-ion Polymer 전지의 수명예측
최중서(Joong-Seo Choi),장미순(Mi-Soon Chang),김재중(Jae-Jung Kim),곽계달(Kae-Dal Kwack) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
Li-ion polymer battery (LIPB) have become very important components for a portable electronic product at present and it must have high reliability. We reveal using failure analysis and express these by using Failure Tree Analysis(FTA). The failure mechanisms of LIPB are dendrite growth, destruction of inner circuit, oxidation decomposition, corrosion of electrode with short, open and electrical degradation. Temperature and voltage are selected as stress factors by using of two-stage Quality Function Deployment(QFD). Using them, the experimental study is carried out by failure of inner circuit alike failure of battery field. Additionally, Analysing the data of failure, this study estimates B₁? lifetime of LIPB and presents a lifetime increasing plan of LIPB.