Abstract

To mitigate the temperature distribution gradients on the surface caused by the coolant flowing and heating on both sides, an efficient liquid cooling system is needed to solve the problem of high temperatures in localized regions of the heating surface. A copper foam-based vapor chamber composite cold plate is developed, and its heat thermal performance is experimentally investigated. The evaporation base with the copper foam metal wick is placed on both sides of the cold plate to form vapor chambers. The effects of a range of heating powers and coolant flow rates on the thermal resistance of vapor chambers with different filling ratios on both sides are investigated. The results show that a 0.15 L min⁻¹ coolant flow rate provides excellent heat dissipation, and continuing to increase the flow rate has little impact on the temperature uniformity. The vapor chamber’s 70 % to 80 % filling ratio reflects the best performance in the test heating power range. The structure is easily assembled and suitable for utilization in battery thermal management systems.

中文翻译：

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泡沫铜基均热板复合液冷系统双面加热下的传热性能

摘要

为了缓解冷却剂在两侧流动和加热造成的表面温度分布梯度，需要一种高效的液冷系统来解决受热面局部区域的高温问题。研制了泡沫铜基均热板复合冷板，并对其热性能进行了实验研究。将带有泡沫铜金属芯的蒸发底座放置在冷板的两侧以形成均热板。研究了一系列加热功率和冷却​​液流量对两侧不同填充率均热板热阻的影响。结果表明，0.15 L min ^-1的冷却剂流量提供了良好的散热效果，并且继续增加流量对温度均匀性影响很小。均热板70%至80%的填充率反映了测试加热功率范围内的最佳性能。该结构易于组装，适合用于电池热管理系统。