电动汽车动力电池冷却技术的研究进展

Research Progress on Power Battery Cooling Technology for Electric Vehicles

新能源汽车在运行时,如何冷却动力电池使其维持在最佳的工作温度是需要重视的问题.合适的冷却技术可以有效提高动力电池的效率,并随着时间的推移降低动力电池老化的速度,延长其使用寿命.综述了几种电池热管理冷却系统,包括传统冷却技术中空气冷却系统、液体冷却系统和直接冷却系统.新型冷却技术中基于相变材料冷却系统、采用热管技术冷却系统和电子元件冷却系统提高汽车动力电池的性能.根据不同技术分析各自的优缺点、适合的工作工况以及经济效益.未来动力电池热管理的发展方向应是无论选择何种技术冷却动力电池,都应保证动力电池处于最佳工作温度,冷却系统稳定、可靠并且能够稳定提高动力电池的转换效率,以期为电池热管理的实际应用提供一定的参考价值.

When a new energy vehicle is in operation, cooling the power battery to maintain optimum operating temperature is a problem that needs to be paid attention to. Through the appropriate cooling technology, the efficiency of the power battery can be effectively improved, and the aging speed of the power battery can be reduced and the service life can be prolonged. Several battery thermal management cooling systems are reviewed, including air cooling systems, liquid cooling systems and direct cooling systems in traditional cooling technologies. The new cooling technology is based on phase change material cooling systems, heat pipe technology cooling systems and electronic component cooling systems. The performance of automotive power batteries. According to different technologies, analyze their respective advantages and disadvantages, suitable working conditions and economic benefits. The future development direction of power battery thermal management should be that no matter what technology is chosen to cool the power battery, the power battery should be guaranteed to be at the optimal working temperature. The cooling system is stable, reliable and can stably improve the conversion efficiency of the power battery. In order to provide a certain reference value for the practical application of battery thermal management.