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정영관(Youngguan Jung),김세웅(Sewoong Kim),서명수(Myungsu Seo),정연구(Yeongu Jung),김두희(Duhee Kim),김병수(Byungsoo Kim) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
Recently interest of hybrid and electric vehicles is rising rapidly due to exhaust control. The lithium ion rechargeable battery has several advantages such as high energy density, no memory effect and light weight therefore the lithium ion rechargeable battery is used at hybrid and electric vehicles. In this study the electrolyte for the lithium ion rechargeable battery used in low temperature was developed and tested. EC, DMC, EMC were chosen as a solvent for the electrolyte and mix proportion was 1:1:1. LiPF? (1.1 mole with 1.0~1.5wt% PC) was chosen as a lithium salt. Experiments showed that the lithium ion rechargeable battery using the developed electrolyte kept 99% capacity of battery in low temperature(-35℃).