Reciprocating air flow for Li-ion battery thermal management to improve temperature uniformity
Reciprocating air flow for Li-ion battery thermal management to improve temperature uniformity
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DOI：
10.1016/j.jpowsour.2011.02.076
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发表时间：
2011-07-01
影响因子：
9.2
通讯作者：
Park, Chanwoo
中科院分区：
文献类型：
--
作者：
Mahamud, Rajib;Park, Chanwoo
电动驱动车辆的牵引电池系统的热管理直接影响车辆的动态性能，长期耐用性和电池系统的成本。在本文中，使用（LIMN（2）O（4）/C）使用往复式气流（i）使用（i）使用（i）二维计算流体动力学（CFD）模型和（II）用于电池电池电池和流量网络模型的二维计算热模型来分析一种新的电池热管理方法。通过均匀的体积焦耳和可逆（熵）损失近似电池加热。 CFD模型的结果通过在线管河岸系统的实验结果验证，该系统近似于本研究所考虑的电池电池布置。数值结果表明，与单向流动案例（TAU = Infinity）相比，往复流可以将电池系统的细胞温度降低约4度C（降低72％C（降低72％）和最大细胞温度C的最大tau = 120 s。这种温度的改善归因于由于周期性流动逆转而在细胞上形成的边界层的热量重新分布和干扰。 （c）2011 Elsevier B.V.保留所有权利。
The thermal management of traction battery systems for electrical-drive vehicles directly affects vehicle dynamic performance, long-term durability and cost of the battery systems. In this paper, a new battery thermal management method using a reciprocating air flow for cylindrical Li-ion (LiMn(2)O(4)/C) cells was numerically analyzed using (i) a two-dimensional computational fluid dynamics (CFD) model and (ii) a lumped-capacitance thermal model for battery cells and a flow network model. The battery heat generation was approximated by uniform volumetric joule and reversible (entropic) losses. The results of the CFD model were validated with the experimental results of in-line tube-bank systems which approximates the battery cell arrangement considered for this study. The numerical results showed that the reciprocating flow can reduce the cell temperature difference of the battery system by about 4 degrees C (72% reduction) and the maximum cell temperature by 1.5 degrees C for a reciprocation period of tau = 120 s as compared with the uni-directional flow case (tau = infinity). Such temperature improvement attributes to the heat redistribution and disturbance of the boundary layers on the formed on the cells due to the periodic flow reversal. (C) 2011 Elsevier B.V. All rights reserved.