Three-dimensional Thermal Modeling of Li-ion Battery Cell and 50 V Li-ion Battery Pack Cooled by Mini-channel Cold Plate
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Three-dimensional Thermal Modeling of Li-ion Battery Cell and 50 V Li-ion Battery Pack Cooled by Mini-channel Cold Plate
- 发表刊物：
- Applied Thermal Engineering
- 摘要：
- 本文工作由美国卡耐基梅隆大学CMU、南京理工大学和西安交通大学合作完成。
https://www.sciencedirect.com/science/article/pii/S1359431118343965
In this work, three-dimensional (3D) thermal modeling of a single Li-ion battery cell and a 50 V Li-ion battery
pack composed of 14 prismatic batteries is performed. Equivalent circuit model is used for subscale electrochemical
modeling. The heat generated by electrical resistance and electrochemistry reactions is then solved in
the cell domain which resolves the heat transfer in battery and battery pack. The modeling provides highly
resolved temporal 3D insight into thermal and battery dynamics under fast discharging and abusive condition. It
is found that with low coolant velocity, the cell temperature easily exceeds 40 °C, and temperature non-uniformity
exceeds the limit value of 5 °C under 5C discharging condition; and under external shorting condition,
temperature rises fast and reaches the 80 °C point quickly which can further trigger thermal runaway. On the
other hand, with adequate coolant flow rate, the cell temperature and temperature gradients are effectively
limited to tolerable level under both 5C discharging and external shorting conditions. Thus, coolant rate needs to
be carefully designed to prevent high temperature and localized high temperature spot in Li-ion battery. The
modeling method used in this study can be applied to general Li-ion battery and Li-ion battery pack designing.
- 合写作者：
- Yubai Li, Zhifu Zhou, Weitao Wu
- 卷号：
- 147
- 页面范围：
- 25
- 是否译文：
- 否
- 发表时间：
- 2018-11-06