| 제목 |
병렬 배터리 팩의 온도 불균형 검출 방법론 연구 |
| 분야 |
전기동력자동차 |
| 언어 |
Korean |
| 저자 |
홍성곤(충남대학교), 강덕훈(충남대학교), 박성윤(충남대학교), 이평연(충남대학교), 한승윤(충남대학교), 김종훈(충남대학교) |
| Key Words |
Battery thermal management(배터리 열관리), Parallel battery pack(병렬 배터리 팩), Temperature imbalance(온도 불균일), Battery safety(배터리 안전성), Equivalent circuit model(등가 회로 모델), OCV recovery(개방 회로 전압 회복), Battery internal parameter(배터리 내부 파라미터) |
| 초록 |
As the use of lithium-ion batteries increases, battery management becomes important. Among them, battery temperature management significantly affects the safety and performance of the battery. Studying battery temperature estimation is difficult, as mechanical, electrical, and chemical actions must be considered. It is also tricky to detect when temperature imbalance occurs in a parallel battery pack. In this paper, instead of detecting battery temperature imbalance through temperature estimation, temperature imbalance in a parallel battery pack can be detected through a commonly used battery parameter extraction method. As a way of detecting temperature imbalance in a battery pack, battery internal parameters through the ECM model are used. In this paper, a methodology for detecting non-uniform temperature through internal parameters is also studied. The difference based on the method was studied through parameter extraction by using the HPPC test method and the OCV recovery section. Furthermore, parameters were extracted for each SOC. Through this methodological study, the long-term performance and the safety of the battery can be improved. |
| 원문(PDF) |
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