Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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An Experimental Study on the Charging/Discharging Characteristics and Safety of Lithium-Ion Battery System for Submarine Propulsion

잠수함 추진용 리튬이온전지 충방전 특성 및 안전성 확보를 위한 실험적 연구

  • 김범석 (고려대학교 기술경영전문대학원) ;
  • 손승현 (한화디펜스) ;
  • 강석중 (고려대학교 기술경영전문대학원)
  • Received : 2021.03.25
  • Accepted : 2021.05.25
  • Published : 2021.08.20
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Abstract

Conventional submarine propulsion batteries have mainly used lead acid batteries, which have proved relatively safe, but in recent years, research on mounting lithium-ion batteries to improve the underwater operation capability of submarines is underway in advanced countries such as Japan. Korea has world-class technology in the development of electric vehicles and lithium-ion batteries for energy storage, but fire safety accidents continue to occur in electric vehicles and energy storage lithium-ion batteries. In order to mount the lithium-ion battery in a submarine, it is necessary to check the safety as well as whether the performance is improved compared to the lead acid battery. Through the charge/discharge experiment of this lithium-ion battery module unit, it was possible to measure how much performance was improved compared to the lead acid battery. Safety tests were conducted on the lithium-ion battery module assuming that it was mounted on a submarine, and it was confirmed that safety was secured when applied to a submarine. Since many modules are mounted on actual submarines, it has been confirmed that it can be applied to submarine systems by simulating charge/discharge characteristics through Hardware-in-the Loop(HILS). Through the results of this study, the application of lithium-ion batteries to submarines is expected to significantly improve the sustainability of underwater operations.

Keywords

Acknowledgement

잠수함 추진용 리튬이온전지 개발은 2017년부터 방위사업청에서 발주한 ◯◯◯사업부터 시작하였다. 대우조선해양과 잠수함 기본설계 계약을 체결하였고 리튬이온전지체계 통합은 한화디펜스로 하여금 국내 산·학·연·군과 협력하여 개발을 수행하고 있다. 셀 및 셀트레이 단위까지는 전지 제작사(삼성SDI)에서 제작하고 그 이후의 성능 확인 및 안전성 시험은 한화디펜스에서 수행하고 있다. 현재 모듈 단위까지는 환경시험을 거치면서 시험 결과 측면에서 안전성이 확보된 잠수함 추진용 리튬이온전지 개발이 성공적으로 이루어지고 있다. 2021년부터는 한화디펜스에서 제작한 모듈을 활용하여 한국전기연구원에서 잠수함에 실제 탑재되는 그룹단위의 육상시험소(LBTS)를 구축하여 잠수함 탑재 전 성능 확인과 안전성이 입증된 리튬이온전지를 탑재할 계획이다.

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