This paper improves the thermal management system of lithium-ion battery through the high thermal conductivity flat heat pipe, and attempts to improve its performance. The adoption of flat heat pipes reduces the problem of poor heat dissipation in the direction of the coolant flow when the liquid cooling plate is used alone, and increases the heat conduction in the longitudinal direction of the battery. A three-dimensional simulation model is established to study the influence of the number and width of flat heat pipes on the maximum temperature rise and temperature difference of lithium-ion batteries at a certain discharge rate. It is found that after adding flat heat pipes, the maximum temperature rise and temperature difference of the battery decreased. The heat dissipation performance reaches the best when the flat heat pipe number is 11 and the maximum temperature difference can be controlled below 5°C at 3 C discharge rate with 11 flat heat pipes.

中文翻译：

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基于扁平热管的锂离子电池液冷系统散热性能研究

本文通过高导热扁平热管对锂离子电池的热管理系统进行改进，并尝试提高其性能。采用扁平热管减少了单独使用液冷板时冷却液流动方向散热不良的问题，增加了电池纵向的热传导。建立三维仿真模型，研究扁平热管的数量和宽度对锂离子电池在一定放电倍率下最大温升和温差的影响。发现增加扁平热管后，电池的最大温升和温差减小。