کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4915764 | 1428087 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical analysis of heat propagation in a battery pack using a novel technology for triggering thermal runaway
ترجمه فارسی عنوان
تجزیه و تحلیل عددی انتشار حرارتی در بسته باتری با استفاده از تکنولوژی جدید برای راه اندازی فرار از حرارتی
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کلمات کلیدی
انتشار دستگاه اتصال کوتاه داخلی، بسته باتری، 18650، ایمنی، فاصله هوا،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
This paper presents a numerical model used for analyzing heat propagation as a safety feature in a custom-made battery pack. The pack uses a novel technology consisting of an internal short circuit device implanted in a cell to trigger thermal runaway. The goal of the study is to investigate the importance of wrapping cylindrical battery cells (18650 type) in a thermally and electrically insulating mica sleeve, to fix the cells in a thermally conductive aluminum heat sink. By modeling the full-scale pack using a 2D model and coupling the thermal model with an electrochemical model, good agreement with a 3D model and experimental data was found (less than 6%). The 2D modeling approach also reduces the computation time considerably (from 11Â h to 25Â min) compared to using a 3D model. The results showed that the air trapped between the cell and the boreholes of the heat sink provides a good insulation which reduces the temperature of the adjacent cells during thermal runaway. At the same time, a highly conductive matrix dissipates the heat throughout its thermal mass, reducing the temperature even further. It was found that for designing a safe battery pack which mitigates thermal runaway propagation, a combination of small insulating layers wrapped around the cells, and a conductive heat sink is beneficial.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 203, 1 October 2017, Pages 189-200
Journal: Applied Energy - Volume 203, 1 October 2017, Pages 189-200
نویسندگان
Paul T. Coman, Eric C. Darcy, Christian T. Veje, Ralph E. White,