基于蛇形通道的电池组液冷方案设计与优化

相较于传统汽车，电动汽车在大力发展新能源的背景下具有良好的应用前景。电池作为电动汽车的动力源之一，其输出性能极易受到温度的影响，电池热管理系统对控制电池工作温度、延长电池组寿命、保障电动汽车安全稳定行驶等都具有重要意义。针对动力电池在工作过程中因自身温度过高而产生不利影响的现象，先分析了电池的生热特性。然后，提出了一套基于蛇形通道的液体冷却热管理方案并进行优化。最后，温度场仿真结果表明:优化后的液冷结构对电池组的工作环境有显著影响，高温工况下能够使电池工作在最佳温度范围20 35℃之内，同时满足电池组内温差小于10℃的要求。 

Design and optimization of battery pack liquid cooling scheme based on serpentine channel

Compared with traditional vehicles, electric vehicles have a broad application prospect under the background of rapid development of new energy. As one of the power sources of electric vehicles, the performance of battery is easily affected by temperature. Battery thermal management system, which can control its working temperature, is of great significance to extend battery service time and ensure the safety and stability of electric vehicles. Aimed at the phenomenon that the temperature of power battery itself is too high, the heat generation characteristics of the battery are analyzed firstly, and then a set of liquid cooling thermal management scheme based on serpentine channel is proposed and optimized. Finally, the simulation results in temperature field show that the optimized liquid cooling structure has an obvious impact on the working environment of the battery pack. Especially under the high temperature condition, the battery can work in the optimal temperature range of 20℃-35℃, and meet the requirement that the temperature difference within the battery pack is less than 10℃.