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논문 기본 정보

자료유형
학술저널
저자정보
김운동 (휴컨) 이순구 (휴컨) 강대근 (휴컨)
저널정보
대한임베디드공학회 대한임베디드공학회논문지 대한임베디드공학회논문지 제16권 제2호
발행연도
2021.1
수록면
79 - 88 (10page)

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초록· 키워드

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In recent years, as ESS has become very popular, BMS related electric fires have occurring frequently. In this research we performed analysis of risk priority number (RPN) using Failure Mode and Effects Analysis (FMEA) technique to analyze the safety of BMS, which accounts for the most part in ESS electric fires. And the functional safety concept was used to eliminate or reduce failure modes that may cause overvoltage, overcurrent, and overheating for higher risk priorities of the analyzed BMS. The BMS hardware was redesigned so that the safety mechanism works for the high-priority risk modes, and the main firmware procedures were designed to control the battery against potential malfunctions. And we implemented the improved BMS hardware and experimentally verified that the safety mechanism works as designed. The test results have confirmed that the safety mechanism works normally and the battery can be controlled even if overvoltage, overcurrent and overheating occurs in the BMS, or major firmware procedures malfunction. Therefore we are confident that electric fires related to ESS can be prevented in advance by analyzing the safety of BMS in the way we used in this research to find high-priority risk factors and applying the concept of safety functions to the hardware and software design of BMS.

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