Charging/Discharging Modeling of Lithium Secondary Battery for Estimating Cycle Characteristic

리튬2차전지의 수명성능평가를 위한 충방전특성 모델링

  • 김재언 (충북대학교 전기전자컴퓨터공학부 전기공학) ;
  • 노대석 (한국기술교육대학교 정보기술공학부 전기공학)
  • Published : 2007.12.31

Abstract

Secondary batteries become more important in our lives as the use of portable electric devices, such as camera, cellular phone, laptop, etc. Especially, because of their high energy densities and high voltage, lithium-ion batteries are being used in many systems. For the optimum design of such systems which include lithium-ion batteries, virtual prototype is required generally. However, since the complex chemical and physical processes are involved, the behavior of battery becomes harder to be predicted compared with that of electric and mechanic devices. This paper, proposes a new static model of lithium secondary battery, which accounts for nonlinear equilibrium potentials, rate and temperature dependencies, thermal effects, lifetime characteristic. The results of the simulation of the model are analysed and compared with experimental data to inspect their validity.

Keywords

Lithium Secondary Battery;Static Modeling;Charge/Discharge Characteristic;Cycling Performance