动力电池包热管理设计与优化分析

Thermal Management Design and Optimization Analysis of Power Battery Pack

针对动力电池包热管理中系统温度不均匀的问题,本文以某款液体循环冷暖一体化热控方式的电池包为研究对象,通过Ansys-fluent对其液冷回路进压降仿真,并优化液冷回路,最后通过实验验证优化前后系统的散热/加热性能,得出流量均匀性越好在液冷和液热时,电池包内电芯间的温差越小,散热以及加热效率更高。为后续热管理设计可将流道的设计作为重点考察对象进行优化。

Aiming at the problem of uneven system temperature in the thermal management of power battery packs,this paper takes a certain type of battery pack with a liquid circulation cooling and heating integrated thermal control method as the research object,and simulates the pressure drop of its liquid cooling circuit through Ansys-fl uent,and optimizes the liquid cooling circuit,and fi nally verifi es the heat dissipation/heating performance of the system before and after the optimization through experiments.It is concluded when liquid cooling and liquid heating,the temperature diff erence between the cells in the battery pack is smaller,and the heat dissipation and heating effi ciency are higher.For the subsequent thermal management design,the fl ow channel design can be optimized as a key observation object.