IE interfaces (산업공학)

Korean Institute of Industrial Engineers (대한산업공학회)
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An Optimum Design of Secondary Battery using Design of Experiments with Mixture

혼합물 실험계획법을 이용한 이차전지의 최적설계

  • Kim, Seong-Jun (Department of Industrial Engineering, Kangnung National University) ;
  • Park, Jong-In (Management Innovation Team, LG Chem Ltd)
  • 김성준 (강릉대학교 산업공학과) ;
  • 박종인 (엘지화학(주) 혁신지원팀)
  • Received : 20050700
  • Accepted : 20051000
  • Published : 2005.12.31
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Abstract

Secondary batteries with high performance are essential in widespread use of modern portable devices such as cellular phones and laptop computers. High energy density, long cycle life, and safety are some of important requirements for secondary battery. To achieve such characteristics, a mixing proportion of electrolyte solution ingredients in the battery should be carefully chosen. In this paper, using statistical design of mixture experiments (DOME), we attempt to find an optimum condition of designing the secondary battery. DOME has a distinct feature in that the experimental region is represented by simplex, rather than hypercube, because the sum of blend proportions should be unity. Several designs based upon this point have been proposed for mixture experiments. Among them, an extreme vertices design is employed in this paper because there are a couple of blend constraints to be considered. In order to investigate how the mixing proportion interacts with other manufacturing factors, a fractional factorial design is also included across the extreme vertices design. As a result, we find that the blend proportion of solution ingredients has a significant effect on battery performances. By simultaneously optimizing two battery capacities, this paper proposes an optimum blend proportion according to process factor settings.

Keywords

References

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