Abstract: Aiming at the problem of low thermal management efficiency of battery modules, this paper analyzes the liquid cooling system of battery modules, aiming to improve its thermal efficiency and safety. By analyzing the current liquid cooling technologies for battery modules, the advantages and disadvantages of different liquid cooling technologies at present are obtained. Based on the above analysis results, the heat flow distribution of the liquid cooling system is modeled and studied using the numerical simulation method to evaluate the influence of different design parameters (coolant flow rate, cooling channel layout, etc.) on the temperature distribution of the battery module. The calculation results show that optimizing the cooling channel design can significantly reduce the peak temperature of the battery module, with the peak temperature dropping from 34.94 ℃ to 29.83 ℃, and the peak temperature decreased by approximately 14.62%. This verifies the effectiveness of the optimized cooling system in reducing the overall average temperature of the battery module and concludes the best solution that the optimized liquid cooling plate structure is more effective for the overall heat dissipation efficiency of the battery module, providing guidance for the subsequent optimization research of the battery module liquid cooling system.

Key words: battery module; thermal management efficiency; liquid cooling system; heat flow distribution; peak temperature

摘要： 针对电池模组热管理效率过低的问题，文章对电池模组液态冷却系统进行了分析，旨 在提高其热效率和安全性。利用对电池模组液态冷却技术的分析，得到了现阶段不同液态冷 却技术的优缺点。根据分析结果，在数值模拟方法的基础上，对液态冷却系统的热流分布进 行建模研究，以评估不同设计参数（冷却液流速、冷却通道布局等）对电池模组温度分布的 影响。计算结果表明，优化冷却通道设计能够显著降低电池模组的峰值温度，峰值温度由 34.94 ℃降至 29.83 ℃，峰值温度降低了约 14.62%。验证了优化冷却系统具有降低电池模组 整体平均温度的有效性，得出了优化后的液冷板结构对电池模组整体散热效率更优的最佳方 案，为后续的电池模组液态冷却系统优化研究具有指导作用。

关键词: 电池模组；热管理效率；液态冷却系统；热流分布；峰值温度