新型浸没式液冷储能电池模组流动传热特性分析

doi:10.6040/j.issn.1672-3961.0.2024.328

摘要/Abstract

摘要： 为提高浸没式液冷电池模组流动传热特性,解决内部传热过程难以有效预测等问题,本研究提出一种新型浸没式液冷储能电池模组。对比新型折流板内构件式模组与传统浸没式模组内流动传热过程差异,综合考虑冷却液流速及初始温度对新型模组内电池传热特性的影响,构建冷却液外掠电池流动换热过程努塞尔数预测关联式。结果表明:相较于传统浸没式模组,新型电池模组流动及传热特性显著提高;增加冷却液流速可改善模组传热性能及温度均匀性,高温电池平均温度降低5.7%,模组内最大温差降低47.6%;提高初始温度会降低新型电池模组传热性能,提升模组温度均匀性,高温电池平均温度升高28.2%,模组内电池间最大温差降低59.5%;在给定范围内,关联式预测值与数值模拟值平均相对误差为2.0%,关联式能够准确预测新型模组传热特性。

关键词: 浸没式液冷, 储能电池模组, 流动传热特性, 温度均匀性, 传热预测关联式

Abstract: To address the limitations of immersion liquid-cooled battery modules, such as limited heat transfer performance and inaccurate internal heat transfer prediction models, a novel immersion liquid-cooled energy storage battery module was proposed. In this work, the flow and heat transfer characteristics of the novel module incorporating an internal baffle were systematically compared with those of traditional immersion modules. The effects of coolant velocity and initial temperature on battery heat transfer performance were comprehensively investigated. Furthermore, a Nusselt number correlation was developed to predict the heat transfer process associated with coolant sweeping across the cells. The results demonstrated that the novel battery module exhibited superior flow and heat transfer performance compared with the traditional immersion module. Increasing the coolant flow rate significantly enhanced the heat transfer capability and temperature uniformity of the module, resulting in a 5.7% reduction in the average battery temperature of the high-temperature battery and a 47.6% reduction in the maximum temperature difference within the module. In addition, raising the initial temperature deteriorated the heat transfer performance but improved the module temperature uniformity, which increased the average battery temperature by 28.2% and decreased the temperature difference by 59.5%. Within the specified range, the proposed correlation predicted the heat transfer behavior with an average relative error of 2.0% compared with numerical simulation results, indicating high accuracy in characterizing the heat transfer performance of the novel module.

Key words: immersion liquid cooling, energy storage battery module, flow and heat transfer characteristics, temperature uniformity, heat transfer prediction

中图分类号:

TM912

郭俊山,祝令凯,巩志强,梁凯,钟子威,商攀峰,王鑫煜. 新型浸没式液冷储能电池模组流动传热特性分析[J]. 山东大学学报 (工学版), 2026, 56(2): 147-157.

GUO Junshan, ZHU Lingkai, GONG Zhiqiang, LIANG Kai, ZHONG Ziwei, SHANG Panfeng, WANG Xinyu. Analysis of flow and heat transfer characteristics in the novel energy storage battery module with immersion cooling[J]. Journal of Shandong University(Engineering Science), 2026, 56(2): 147-157.

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