Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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A Survey on Measurement and Estimation Methods for State of Health of EV Lithium-ion Batteries

전기 자동차 리튬-이온 배터리 SOH 측정 및 추정 방법에 대한 조사연구

  • Koog-Hwan Oh (Smart Electrics Research Center, Korea Electronics Technology Institute) ;
  • Hyun-Chang Cho (Smart Electrics Research Center, Korea Electronics Technology Institute)
  • 오국환 (한국전자기술연구원 스마트전장연구센터) ;
  • 조현창 (한국전자기술연구원 스마트전장연구센터)
  • Received : 2023.11.13
  • Accepted : 2023.11.23
  • Published : 2023.11.30
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Abstract

Electric vehicles (EVs) have recently been in the spotlight and have been rapidly developed to reduce the carbon emission with respect to the transport sector. Most EVs currently employ lithium-ion batteries (LIBs) as power sources because they have a higher energy density and a lower self-discharge than other batteries. However, the LIBs cannot respond to high power demands when the state of health (SOH) falls below 80%. Therefore, the SOH of the LIBs must be accurately measured or estimated. To date, many methods have been studied and proposed for measuring or estimating the SOH. In this paper, representative methods among them are reclassified and introduced.

Keywords

Acknowledgement

이 논문은 2023년 정부(산업통상자원부)의 재원으로 한국산업기술진흥원의 지원을 받아 수행된 연구임(P0021883, 2022년 전기차용 폐배터리 재사용 산업화 기술개발 사업).

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