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강용구(Young-Gu Gang),권현규(Hyun-Kyu Kweon),서명수(Myung-Su Seo),박창용(Chang-Yong Park) 한국기계가공학회 2009 한국기계가공학회지 Vol.8 No.2
This paper presents a new lithium ion unit-cell and pack battery by using a new formulation ratio of material. The three types of formulation ratio for the unit-cell were used. The life cycle and basic properties of the lithium ion unit-cell(ψ18×65(㎜)) about one of them were acquired by the charge-discharge experiment. The nominal voltage, nominal capacity and cycle life output of the lithium ion unit-cell is respectively 3.7V, 2.4Ah, and above 500cycle. Pack type lithium ion battery has the size of 29.5×73.5×115(㎜) and the weight of 300g. As the results, the weight and bulk of lithium ion battery used to a safety lamp were decreased to 1/4 and 1/7. In addition, the comparison of the new lithium ion battery and lead storge battery for confirming the effectiveness of the new lithium ion battery have been performed.