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

Wang Yujie; Zhong Ziqi; Xu Nuo

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

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (3) : 83-90. DOI: 10.19912/j.0254-0096.tynxb.2023-1969

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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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.

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lithium-ion batteries / battery energy storage / thermal management / liquid cooling plate / new energy power system

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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

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