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Proposal Protection Algorithm of Dendritic Lithium for Battery Second Use ESS

재사용 ESS를 위한 리튬 배터리 덴드라이트 보호 알고리즘 제안

  • Song, Jung-Yong (Department of Electrical Engineering, Inha University) ;
  • Huh, Chang-Su (Department of Electrical Engineering, Inha University)
  • 송정용 (인하대학교 전기공학과) ;
  • 허창수 (인하대학교 전기공학과)
  • Received : 2018.04.17
  • Accepted : 2018.05.25
  • Published : 2018.09.01

Abstract

The lithium-ion battery pack of an electric vehicle (EV) deserves to be considered for an alternative use within smart-grid infrastructure. Despite the long automotive service life, EV batteries retain over 70~80% of their initial capacity. These battery packs must be managed for their reliability and safety. Therefore, a battery management system (BMS) should use specific algorithms to measure and estimate the status of the battery. Most importantly, the BMS of a grid-connected energy storage system (ESS) must ensure that the lithium-ion battery does not catch fire or explode due to an internal short from uncontrolled dendrite growth. In other words, the BMS of a lithium-ion battery pack should be capable of detecting the battery's status based on the electrochemical reaction continuously until the end of the battery's lifespan. In this paper, we propose a new protection algorithm for a dendritic lithium battery. The proposed algorithm has applied a parameter from battery pack aging results and has control power managing.

References

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