Experimental investigation on a novel liquid-cooling strategy by coupling with graphene-modified silica gel for the thermal management of cylindrical battery
Experimental investigation on a novel liquid-cooling strategy by coupling with graphene-modified silica gel for the thermal management of cylindrical battery
复制标题
石墨烯改性硅胶耦合新型液冷策略用于圆柱电池热管理的实验研究
DOI：
10.1016/j.applthermaleng.2019.113885
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发表时间：
2019-08-01
影响因子：
6.4
通讯作者：
Zhang, Guoqing
中科院分区：
文献类型：
--
作者：
Lv, Youfu;Zhou, Dequan;Zhang, Guoqing
作为纯电动/混合动力汽车中应用最广泛的电池热管理（BTM）技术，液体冷却面临着提高冷却管与圆柱形电池曲面之间传热能力的挑战。在这项工作中，一种氧化石墨烯（GO）改性硅胶（GO-SG）的制备和简单地填充在圆柱形电池和水冷却管之间的空间。GO的添加赋予GO-SG增强的导热性，以有效地将产生的热量传递到管，从而使电池模块具有上级的冷却和温度均匀性能。例如，在2和3C的快速充电过程中，具有GO-SG的水冷模块的最高温度（T-max）低至37.7和42.0摄氏度，并且相应的温差（Δ T）分别控制在4和5摄氏度以下。在循环测试期间，T_max和Δ T可以分别保持在40和4摄氏度以下。我们相信，这种方法可以打开新的思路，液体冷却技术的结构优化，从而促进BTM系统的发展。
As the most widely used battery thermal management (BTM) technology in pure/hybrid electric vehicles, liquid cooling is facing challenge of enhancing the heat transfer capability between the cooling tubes and the curved surface of cylindrical cells. In this work, a kind of graphene oxide (GO) -modified silica gel (GO-SG) is prepared and simply filled in the space between the cylindrical cells and water cooling tubes. The addition of GO endows the GO-SG with enhanced thermal conductivity to transfer the generated heat to the tubes effectively, thus giving rise to a superior cooling and temperature-uniformed performance of the battery module. For instance, during the fast charging process of 2 and 3C, the maximum temperature (T-max) of the water cooling module with GO-SG is as low as 37.7 and 42.0 degrees C, and the corresponding temperature difference (Delta T) is controlled below 4 and 5 degrees C, respectively. During the cycling tests, the T-max and Delta T can be maintained below 40 and 4 degrees C, respectively. We believe that this approach may open new thoughts for the structural optimization of the liquid cooling technology and thus promote the development of the BTM systems.