Liquid cooling based on thermal silica plate for battery thermal management system
Liquid cooling based on thermal silica plate for battery thermal management system
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DOI：
10.1002/er.3801
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发表时间：
2017-12-01
影响因子：
4.6
通讯作者：
Rao, Mumin
中科院分区：
文献类型：
--
作者：
Wang, Cong;Zhang, Guoqing;Rao, Mumin
为了实现安全、长寿命、高性能的锂离子电池，电池热管理系统(BTMS)是必不可少的。这对于实现快速充放电和在苛刻的操作条件下尤为必要。本研究为棱柱型锂离子电池设计了一种新型的基于热硅板的电池冷却系统。采用实验和模拟相结合的方法，研究了不同冷却通道数、不同流量和不同流动方向的BTMS在不同流量下的冷却能力。结果表明，随着热硅板和液体通道数量的增加，电池内部达到的最高温度降低。流动方向对冷却能力没有显著影响。虽然随着进口流量的增加，性能明显改善，但在达到一定阈值后，增益急剧下降，因此不再证明较高的能量成本是合理的。当流量为3C时，进气流量为0.1m/S足以有效冷却系统；当流量为5C时，最佳进气流量为0.25m/S。模拟结果能够准确地再现实验结果，为液冷BTMS的有效设计提供了依据。
To achieve safe, long lifetime, and high-performance lithium-ion batteries, a battery thermal management system (BTMS) is indispensable. This is especially required for enabling fast charging-discharging and in aggressive operating conditions. In this research, a new type of battery cooling system based on thermal silica plates has been designed for prismatic lithium-ion batteries. Experimental and simulations are combined to investigate the cooling capability of the BTMS associated to different number of cooling channels, flow rates, and flow directions while at different discharge C-rates. Results show that the maximum temperature reached within the battery decreases as the amount of thermal silica plates and liquid channels increases. The flow direction had no significant influence on the cooling capability. While the performance obviously improves with the increase in inlet flow rate, after a certain threshold, the gain reduces strongly so that it does not anymore justify the higher energy cost. Discharged at 3 C-rate, an inlet flow rate of 0.1m/s was sufficient to efficiently cool down the system; discharged at 5 C-rate, the optimum inlet flow rate was 0.25m/s. Simulations could accurately reproduce experimental results, allowing for an efficient design of the liquid-cooled BTMS.