Earticle

초록

영어

This study investigates the thermal runaway behavior of portable lithium-ion batteries and proposes design criteria for fire-resistant containment packs. Since Sony commercialized lithium-ion batteries, energy density has increased, but so has the risk of thermal runaway. Portable batteries, with multiple cells in confined structures, are prone to heat accumulation, pressure rise, and flame ejection. Forced-heating experiments on pouch-type lithium cobalt oxide (LCO) batteries (10,000–40,000 mAh) showed that temperatures reached 200 °C within 4–9 minutes, with swelling and off-gas release. Maximum temperatures reached 814 °C, and thermal runaway lasted up to 38 seconds. Sealed vessel tests indicated rapid pressure rise (>0.8 MPa) and explosion risk upon oxygen ingress. Fire-resistant pack tests using double-layer aramid fiber demonstrated that opposite inlet orientation prevented external flame ejection while allowing off-gas release. FDS-based PyroSim simulations confirmed delayed flame ejection and moderated pressure. Effective packs should withstand ≥814 °C for ≥40 seconds, allow off-gas ventilation, maintain ≥600 N tensile strength, and employ multi-layer structures. This study provides practical safety design guidelines and highlights recycled firefighter protective clothing as a sustainable material.

목차

Abstract
1. 서론
2. 휴대용 보조배터리 구조 및 종류
2.1 휴대용 보조배터리 종류
2.2 휴대용 보조배터리(리튬이온배터리) 구조 및 충·방전 원리
3. 리튬 배터리 열폭주 형성 단계
4. 휴대용 보조배터리 열폭주 실험
4.1 휴대용 보조배터리 용량별 열폭주 실험
4.2 휴대용 보조배터리 열폭주 압력 측정 실험
5. 휴대용 보조배터리 방화팩 실험
5.1 방화팩 재질별 특성 분석
5.2 시중 판매용 및 시제 방화팩 성능 실험
5.3 자체 개발 방화팩 성능 실험
5.4 방화팩 화재시뮬레이션
6. 결론
참고문헌

키워드

저자

• 허정필 [ Jeong Pil Heo | 부산항만소방서 ]
• 박정진 [ Jeong Jin Park | 부산항만소방서 ]
• 허시홍 [ Si Hong Heo | 부산동래소방서 ]
• 전태을 [ Tae Eul Jeon | 부산남부소방서 ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국화재감식학회 학회지 [Magazine of Fire Investigation Socity of Korea]

• 간기

  계간

• pISSN

  2092-531X

• 수록기간

  2009~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 539 DDC 628