锂离子电池浸没式热管理技术方案研究
Immersion thermal management technology for lithium-ion battery
陈杰 1牛雅恒 2陈俊玄 2吴启超 2黄瑞 3俞小莉 3齐建斌2
作者信息
- 1. 浙江大学 工程师学院,浙江 杭州 310015
- 2. 浙江大学 能源工程学院,浙江 杭州 310027
- 3. 浙江大学 能源工程学院,浙江 杭州 310027;浙江省汽车智能热管理科学与技术重点实验室,浙江 台州 317299
- 折叠
摘要
为综合探究各因素对电池模组浸没冷却效果的影响与规律,以9 节21700 电池组成的最小模组单元为研究对象,搭建试验台架并展开研究,发现设计条件下,模组的温差在强制对流冷却 1C放电时较小,而自然对流冷却则2C放电时较小.建立并验证了浸没冷却模组的数值仿真方法,将不同模型的计算结果进行对比分析,发现设计条件下,电连接件会影响模组的温升与温度分布.基于仿真方法探究了冷却介质及其流量与温度对冷却效果的影响,发现模组的温升与温差随流量的增大而降低,降低入口温度可以减小模组的温升,提高入口温度则可以减小模组的温差.
Abstract
In order to comprehensively explore the influence and rule of various factors on the immersion cooling effect of bat-tery module,taking the smallest module unit composed of nine 21700 batteries as the research object,a test bench was built and experimental research was carried out.It was found that,the temperature difference of the module under the condition of forced convection cooling was smaller when 1C discharged,while the temperature difference under the condition of natural convection cooling was smaller when 2C discharged.The numerical simulation method of the immersion cooling module was established and verified.By comparing and analyzing the results of different models,it was found that the electrical connec-tion components would affect the temperature rise and distribution.Based on the simulation method,the influence of the cool-ing medium and its flow rate and temperature on the cooling effect was explored.The temperature rise and temperature differ-ence decreased with the increased of the flow rate;reducing the inlet temperature would reduce the temperature rise,and in-creasing the inlet temperature would diminish the temperature difference of the module.
关键词
电池热管理/浸没冷却/影响因素/温度分布Key words
battery thermal management/immersion cooling/influencing factors/temperature distribution引用本文复制引用
基金项目
能源清洁利用国家重点实验室开放基金(ZJUCEU2022016)
&&(2022Z151)
出版年
2024
NETL
NSTL
万方数据