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Comparison and Selection of Quantitative Priority in Battery Screening Group Based on Series Resistance/Fuzzy Logic

직렬저항/퍼지로직 기반 배터리 선별 그룹 내 정량적 우선순위 비교 및 선정

  • Cho, Sangwoo (Dept. of Electrical Engineering, Chungnam National University) ;
  • Han, Dongho (Dept. of Electrical Engineering, Chungnam National University) ;
  • Choi, Changki (Dept. of Electrical Engineering, Chungnam National University) ;
  • Kim, Jaewon (Dept. of Electrical Engineering, Chungnam National University) ;
  • Kim, Jonghoon (Dept. of Electrical Engineering, Chungnam National University)
  • Received : 2021.09.04
  • Accepted : 2021.12.20
  • Published : 2022.04.20

Abstract

In increasing the safety and usage of lithium-ion battery packs, reducing the parameter deviation between cells, such as voltage and temperature within the battery pack, is important. In this study, we propose a screening method to reduce parameter deviation between cells in battery packs. Screening algorithms are constructed based on Fuzzy logic and quantitatively express the similarities between battery cells. Screening is applied by utilizing series resistance components after experiments of electrical characteristics that consider the operation status of battery packs. After screening, the standard deviation of series resistance components according to the similarity ranking is compared and analyzed, and their conformity are verified with the algorithm parameters.

Keywords

Acknowledgement

이 논문은 한국전력공사 2019년 선정 기초연구개발 과제의 지원을 받아 수행한 연구 과제입니다. (R19XO01-45) 이 논문은 한국연구재단(NRF)의 지원을 받아 수행한 연구 과제입니다. (No. 2020R1F1A1076204)

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