LSB(Lithium Secondary Battery) 발화·폭발에 따른 극판 형상 분석 및 평가 연구

다국어 초록 (Multilingual Abstract)

The need for safety standards of lithium battery is gradually required, but systematic analysis is still insufficient. There is still an objective and empirical accident analyzing method for batteries after ignition. The explosion pattern is analyzed, through non-destructive analysis (X-ray SEM) and destruction (disassembly) analysis of the battery. The possibility of accident after the ignition is suggested through the experiment of the internal shot and the overcharge representation. If the battery penetrates a part of the battery can with an external impact (nail), battery swells and an internal short circuit between the impact object and the jelly roll (electrode plate) happens. Ignition and explosion patterns by swelling, short-cut and overcharge are analysed and evaluated systematically by experiments. These results can be shared not only by the objective and reasonable analysis method of lithium secondary batteries but also by the fire investigation technique.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 리튬 이차전지 화재사례
• 2.1 인천 남구 매소홀로475번길 18 [○○○차량]
• 2.2 인천 남구 염전로 333번길 23 [○○○○○대학]
• 3. 리튬 이차전지의 이해
• 3.1 리튬 이차전지의 구조와 원리
• 3.2 리튬 이차전지의 발화/폭발 원리
• 3.3 리튬 이차전지의 구성물질 및 분석방법
• 4. 리튬 이차전지 분석평가 실험
• 4.1 swelling 전지의 비파괴·파괴(해체) 및 SEM/EDX 분석
• 4.2 단자 간 외부 쇼트(short-circuit) 실험
• 4.3 리튬이차전지 과충전(overcharge) 실험
• 4.4 리튬 이차전지 EDX분석 원소 조성평가
• 4.5 LiCoO2 양극물질(코인형 및 파우치형) XRD 분석
• 5. 결론 및 시사점
• 5.1 제도적 개선방안
• 참고문헌