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多箱电池包直冷热管理系统的实验研究
李鑫盛1,2, 贾 腾3,2, 赵 耀3,2, 姜 山3,2, 代彦军3,2
0
(1.上海交通大学中英国际低碳学院;2.太阳能发电及制冷教育部工程研究中心;3.上海交通大学制冷与低温工程研究所)
摘要:
随着锂离子电池功率密度不断提高以及高功率快充技术的发展,电池热管理系统的设计已成为研究的重点和难点。本文基于吹胀式冷板构建了一种多箱电池包直冷热管理系统,并对系统在不同运行工况下的性能表现进行了实验研究。实验结果表明:在0.5 C倍率充电工况下,压缩机转速为2400 r/min时,系统的平均性能系数(Coefficient of Performance, COP)可达到5.83,冷板的最大无量纲压力损失系数为6.27%,冷板间最大温差为1.90 °C。冷板间的温差随着压缩机转速升高和冷板热载荷的增加而增大,冷板间最大温差为3.99 °C。系统COP随着压缩机转速的升高而降低,系统COP最高可达到7.41。
关键词:  热管理系统  直冷  多箱电池包  性能系数
DOI:
投稿时间:2024-03-04  修订日期:2024-03-26   录用日期:2024-04-19
基金项目:
Experimental Research on Direct Cooling Thermal ManagementSystem for Multi-Box Battery Packs
Abstract:
As the power density of lithium-ion batteries steadily advances and high-power fast charging technologies evolve, the design of battery thermal management systems has emerged as a pivotal and challenging area of research. This study introduces a direct cooling thermal management system for multi-box battery packs, utilizing roll-bond cold plates,and conducts experimental research on the system's performance under different operating conditions. The experimental results show that at a charging rate of 0.5 C and a compressor speed of 2400 r/min, the system's average Coefficient of Performance (COP) can reach 5.83, the cold plate's maximum dimensionless loss coefficient is 6.27%, and the maximum temperature difference between cold plates is 1.90 °C. Notably, the temperature difference between the plates escalates with an increase in compressor speed and the cold plate's thermal load, peaking at 3.99 °C during the tests. Concurrently, the system's COP exhibits a decreasing trend with the acceleration of the compressor, achieving a maximum of 7.41 throughout the duration of the experiments.
Key words:  Thermal management system  Direct cooling  Multi-Box Battery Packs  Coefficient of Performance

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