Research on Heat Transfer Characteristics and Structural Optimization of NewWaveform Microchannels for Lithium-Ion Batteries Cooling Plates

LI Junhao; REN Xiaolong; YANG Jiong; TANG Songzhen

doi:10.7652/xjtuxb202411002

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Research on Heat Transfer Characteristics and Structural Optimization of NewWaveform Microchannels for Lithium-Ion Batteries Cooling Plates

更新时间：2025-07-25

- Research on Heat Transfer Characteristics and Structural Optimization of NewWaveform Microchannels for Lithium-Ion Batteries Cooling Plates
- Vol. 58, Issue 11, Pages: 14-26(2024)
- 作者机构：
  
  1. 郑州大学机械与动力工程学院,郑州,450001
  2. 广东顺德创新设计研究院,广东,佛山,528300
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202411002
  CLC： U469.72
- Online First：10 November 2024，
  
  Published：2024
- 稿件说明：
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LI Junhao, REN Xiaolong, YANG Jiong, et al. Research on Heat Transfer Characteristics and Structural Optimization of NewWaveform Microchannels for Lithium-Ion Batteries Cooling Plates[J]. 2024, 58(11): 14-26.
DOI：

LI Junhao, REN Xiaolong, YANG Jiong, et al. Research on Heat Transfer Characteristics and Structural Optimization of NewWaveform Microchannels for Lithium-Ion Batteries Cooling Plates[J]. 2024, 58(11): 14-26. DOI： 10.7652/xjtuxb202411002.

摘要

为了在锂电池安全范围内提升电池组的温度均匀性并减少能耗

基于欠阻尼的二阶系统单位阶跃响应曲线设计了一种新型波型流道

以方形三元锂为电芯的1p12s(1并12串)590模组

在25 ℃进行2C放电的工况下采用计算流体力学(CFD)数值计算方法进行单因子试验稳态分析

研究流体流速、波形频率、阻尼和区间与液冷板冷却性能及流体压降的关系。通过单因子试验选取合适参数设计正交试验并进行极差和方差分析

根据显著性得到各因子组合

计算综合性能指标得到最优组合。结果表明:最高温度与阻尼和区间正相关

与流速和频率负相关

最大温差与区间呈正相关

与流体流速和频率呈负相关且影响程度均递减

阻尼对其影响表现出先降低后增加

压降与流速和频率呈正相关

与阻尼和区间呈负相关。正交试验分析最佳因子组合是频率为4、阻尼为0.03和区间为1的波形流道

最大温度、最大温差和压降分别为35.368 ℃、2.125 ℃和6.121 kPa

相比原始余弦流道分别增加了1.99%、减小42.61%和39.96%。通过调整频率、阻尼和区间参数

显著提高了液冷板的热传递效率和电池组温度均匀性

提高电池组稳定性和寿命的同时降低了能耗。该设计方案为动力电池间接液冷应用于多种工程情况提供了思路。

Abstract

To enhance the temperature uniformity of the battery pack within a safe range and reduce energy consumption

a novel waveform channel is designed based on the underdamped second-order system unit step response curve. Using a 1p12s(1 parallel and 12 series)590 module with square ternary lithium as the core

a steady-state analysis of a single-factor experiment is conducted under the condition of 2C discharge at 25 ℃ using the computational fluid dynamics(CFD)numerical calculation method. The relationship between fluid flow velocity

waveform frequency

damping

interval

liquid cooling plate cooling performance

and fluid pressure drop is investigated. Suitable parameters are selected through single-factor experiments to design orthogonal experiments. Range and variance analyses are then conducted to determine significant factor combinations and calculate the optimal combination based on comprehensive performance indicators. The results show that the maximum temperature is positively correlated with the damping and interval

and negatively correlated with the flow velocity and frequency. The maximum temperature difference is positively correlated with the interval

and negatively correlated with the flow velocity and frequency

with decreasing impact levels. Damping initially decreases and then increases its impact. Pressure drop is positively correlated with flow velocity and frequency

and negatively correlated with damping and interval. The orthogonal experiment analysis reveals that the optimal factor combination is a waveform channel with a frequency of 4

damping of 0.03

and interval of 1. The maximum temperature

maximum temperature difference

and pressure drop are 35.368 ℃

2.125 ℃

and 6.121 kPa

respectively. In comparison to the original cosine channel

these values increase by 1.99%

decrease by 42.61%

and decrease by 39.96%

respectively. By adjusting the parameters of frequency

damping

and interval

the heat transfer efficiency of the liquid cooling plate and the temperature uniformity of the battery pack are significantly improved

enhancing the stability and lifespan of the battery pack while reducing energy consumption. The flexible adjustment of the parameters of these three factors provides insights for application in various engineering scenarios.

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