车用锂离子动力电池风冷散热系统研究进展

Research progress on air-cooling heat dissipation system of vehicle lithium ion power batteries

锂离子电池作为电动汽车动力电池首选,维持其工作在最佳温度范围需要应用散热系统。针对常用的风冷散热系统,阐述了不同类型的特点,综述了国内外在电池内部流道、进出风口结构、冷却空气流体参数等方面开展的仿真与实验研究,以及采用优化算法和优化策略,改善电池内部温度和温差的优化设计研究。为克服风冷散热系统冷却效率低及密封性不足的问题,基于风冷散热系统的混合冷却系统被研究者广泛提出。

Lithium ion batteries are preferred as electric vehicle power batteries, maintaining their work in optimal temperature range requires a heat dissipation system. For the commonly used air-cooling heat dissipation system,different types of characteristics had been described, and the simulation and experimental studies of domestic and foreign were summarized on flow paths, entering and exiting wind, cooling air fluid parameters, etc. The optimization algorithms and optimization strategies for improving internal temperature and temperature difference in batteries were also outlined. In order to overcome the problem of low cooling efficiency and insufficient sealing, hybrid cooling system based on the air-cooling heat dissipation system was widely proposed by the researchers.