锂离子电池储能单元温度均匀性与热管理系统能耗研究

王钰洁; 钟子琦; 许诺

doi:10.19912/j.0254-0096.tynxb.2023-1969

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (3) : 83-90. DOI: 10.19912/j.0254-0096.tynxb.2023-1969

锂离子电池储能单元温度均匀性与热管理系统能耗研究

王钰洁, 钟子琦, 许诺

作者信息 +

RESEARCH ON TEMPERATURE UNIFORMITY OF LITHIUM-ION BATTERY ENERGY STORAGE UNIT AND ENERGY CONSUMPTION OF THERMAL MANAGEMENT SYSTEM

Wang Yujie, Zhong Ziqi, Xu Nuo

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文章历史 +

摘要

锂离子电池作为新能源电力系统中的储能单元之一,其温度控制和均匀性以及热管理系统能耗是提升新能源电力系统可靠性的关键。该文建立锂离子电池生热与传热模型,进行单电池温升验证。提出一种侧凹型液冷板,建立计算流体动力学（CFD）三维数值模型,分析流向及流速、进口竖向流动面积和流道横向流动面积对液冷板散热性能的影响,对3种液冷板进行性能对比。结果表明增大流速能提高散热性能但会显著增加能耗,双正流向转角处无液体回流现象温度均匀性好。流道横向流动面积增大时,液体压降和平均压强降低,电池温度分布趋于平缓,能显著降低能耗和提高温度分布均匀性。不同版型性能对比中,侧凹型液冷板综合性能最优。

Abstract

Lithium-ion battery is one of the energy storage units in the new energy power system. The temperature control and uniformity of the lithium-ion battery and the energy consumption of the thermal management system are the keys to improve the reliability of the new energy power system. In this paper, we established the model of heat generation and heat transfer of lithium-ion battery, and verified the temperature rise of single battery. We proposed a side-concave liquid cooling plate and established a CFD three-dimensional numerical model to analyze the effects of flow direction and velocity, inlet vertical flow area and channel lateral flow area on the heat dissipation performance of the liquid cooling plate, and then compared the performance of the three types of liquid cooling plates. The experimental results show that increasing the flow rate can improve the heat dissipation performance but significantly increase the energy consumption. There is no liquid reflux phenomenon at the corner of the liquid cooling plate under the condition of double forward liquid flow. When the transverse flow area of the channel increases, the liquid pressure drop and the average pressure decrease. The temperature distribution of the battery tends to be smooth, which can significantly reduce energy consumption and improve the uniformity of temperature distribution. In the performance comparison of different versions, the comprehensive performance of the concave liquid cooling plate is the best.

导出引用

王钰洁, 钟子琦, 许诺. 锂离子电池储能单元温度均匀性与热管理系统能耗研究[J]. 太阳能学报. 2025, 46(3): 83-90 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1969

Wang Yujie, Zhong Ziqi, Xu Nuo. RESEARCH ON TEMPERATURE UNIFORMITY OF LITHIUM-ION BATTERY ENERGY STORAGE UNIT AND ENERGY CONSUMPTION OF THERMAL MANAGEMENT SYSTEM[J]. Acta Energiae Solaris Sinica. 2025, 46(3): 83-90 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1969

中图分类号： TK02

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