锂离子电池液体冷却技术研究现状

Research status of liquid cooling technology for lithium ion batteries

针对目前电动汽车电池的温升以及温度均匀性问题,为发挥锂离子电池的最大效率,需要设计合理的电池热管理方案。首先在实际应用的锂离子电池热管理方案中,对比空气冷却,液体冷却由于不可替代的优点逐渐成为主流的冷却方式;其次从结构设计、冷却介质、直接冷却和液冷-PCM复合冷却这四个角度,对液体冷却方式研究现状进行了综述,总结各自的冷却特性和各参数,为未来液体冷却的模型设计及结构化参数提供了参考;最后,针对液体冷却的不足,提出了后续研究应采取的措施。

In order to maximize the efficiency of lithium-ion battery,it is necessary to design a reasonable battery thermal management scheme for the current temperature rise and temperature uniformity of electric vehicle batteries.Firstly,compared with air cooling,liquid cooling has gradually become the mainstream cooling method due to its irreplaceable advantages in the practical application of lithium ion battery thermal management scheme.Secondly,from the four angles of structure design,cooling medium,direct cooling and liquid cooling-PCM composite cooling,the research status of liquid cooling mode is summarized,and the respective cooling characteristics and comparisons of various parameters are summarized,which provides a reference for the model design and structural parameters of liquid cooling in the future.Finally,the measures taken in the follow-up study are proposed for the lack of liquid cooling.