This study analyzed ignition probability about Lithium-polymer batteries of what variously were being produced wearable devices recently. The study analyzed ignition probability by PCM(Protection Circuit Module) operating state and overcharged, over-discharged, exposed to high temperatures of Lithium polymer batteries, analyzing wearable devices on the market. Then it classified experimental results to implement analysis comparison about weight, X-ray imaging, battery decomposition. With these experiments, the study analyzed combustion-possibility and fire patterns. These statistics will be used to measure and verify the cause of a fire when identify wearable devices using Lithium-polymer batteries.

Abstract
1. 서 론
2. 이론적 배경
    2.1 웨어러블 기기[Wearable devices] 개요
    2.2 리튬폴리머 배터리의 구조와 이해
    2.3 보호회로(PCM, Protection Circuit Module)의 기능
3. 사례 및 통계분석
    3.1 사고사례
    3.2 통계분석
4. 재현실험 및 연소패턴 분석
    4.1 실험개요
    4.2 웨어러블 제품 분해 분석
    4.3 리튬폴리머 배터리 안정성 실험
    4.4 리튬폴리머 배터리 과충전 실험
    4.5 웨어러블 디바이스 과충전 실험
    4.6 리튬폴리머 배터리 과방전(단락) 실험
    4.7 고온노출 실험
5. 실험분석
    5.1 중량비교 분석
    5.2 X-ray 영상분석
    5.3 리튬폴리머 배터리 분해 비교
6. 결 론
    6.1 연구결과
    6.2 화재예방 대책
7. References

• 이정일(중앙소방학교) | Jung-Il Lee (Fire Education & Training Division / Fire Marchall, National Fire Service Academy) Corresponding Author