基于浸没式液冷的锂电池热管理研究进展
Recent advancements on thermal management of lithiumbatteries based on immersion liquid cooling
摘要：
电池热管理系统对电动汽车的安全性至关重要。随着电池能量密度和放电功率的提高,传统散热方案已无法满足当前电池散热的要求。浸没式液冷电池热管理系统作为电动汽车动力电池组和动力系统的高效热管理解决方案之一,正受到越来越多的关注。本文综述了目前锂离子电池浸没式液冷技术,包括单相浸没式液冷和两相浸没式液冷;探讨了冷却液种类、排布方式、流速、压力等因素对系统性能的影响及浸没式液冷效率的评价方法。同时,分析了目前浸没式液冷技术在电池热管理中的行业趋势。最后,对于浸没式液冷在锂电池热管理中的应用进行了展望,为开发更高功率、更安全和更持久的电动汽车提供参考。
Abstract：
Battery thermal management systems play a crucial role in ensuring the safety of electric vehicles. However, with the increase of battery energy density and discharge power, traditional heat dissipation methods are no longer sufficient to meet the current requirements for effective battery cooling. Immersion liquid cooling battery thermal management systems have emerged as an efficient solution for electric vehicle power battery packs and power systems, garnering significant attention in recent years. Therefore, this review focuses on immersion liquid cooling technology for lithium-ion batteries, encompassing both single-phase and two-phase immersion liquid cooling approaches. The impact of coolant type, distribution, flow rate, pressure, and other factors on system performance is discussed alongside evaluation methods for assessing immersion liquid cooling efficiency. Furthermore, an analysis of the current industry trends pertaining to immersion liquid cooling technology in battery thermal management is provided. Finally, future prospects regarding the application of immersion liquid cooling in enhancing the thermal management of lithium batteries are forecasted herein, offering valuable insights towards developing higher-power electric vehicles that are safer and possess longer-lasting capabilities.
Keywords:lithium battery thermal management; liquid cooling; immersion liquid cooling; single-phase immersion liquid cooling; two-phase immersion liquid cooling; boiling heat exchange