堆栈(抽象数据类型)
电池(电)
计算机冷却
空气冷却
热的
核工程
材料科学
相变材料
机械
水冷
航程(航空)
热力学
机械工程
复合材料
电子设备和系统的热管理
计算机科学
工程类
物理
功率(物理)
程序设计语言
作者
Rui Li,Jixin Chen,Jingzhi Xun,Kui Jiao,Qing Du
出处
期刊:Applied Energy
[Elsevier]
日期:2014-11-01
卷期号:132: 288-297
被引量:134
标识
DOI:10.1016/j.apenergy.2014.07.024
摘要
Thermal management is critically important to maintain the performance and prolong the lifetime of a lithium-ion (Li-ion) battery. In this paper, a two-dimensional and transient model has been developed for the thermal management of a 20-flat-plate-battery stack, followed by comprehensive numerical simulations to study the influences of ambient temperature, Reynolds number, and discharge rate on the temperature distribution in the stack with different cooling materials. The simulation results indicate that liquid cooling is generally more effective in reducing temperature compared to phase-change material, while the latter can lead to more homogeneous temperature distribution. Fast and deep discharge should be avoided, which generally yields high temperature beyond the acceptable range regardless of cooling materials. At low or even subzero ambient temperatures, air cooling is preferred over liquid cooling because heat needs to be retained rather than removed. Such difference becomes small when the ambient temperature increases to a mild level. The effects of Reynolds number are apparent in liquid cooling but negligible in air cooling. Choosing appropriate cooling material and strategy is particularly important in low ambient temperature and fast discharge cases. These findings improve the understanding of battery stack thermal behaviors and provide the general guidelines for thermal management system. The present model can also be used in developing control system to optimize battery stack thermal behaviors.
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