基于热电耦合液体冷却的动力电池热管理系统的实验研究  

Experimental study on power battery thermal managment system based on thermoelectric-coupling liquid-cooling

作　　者：单春贤[1] 夏灯富 刘朝阳 唐爱坤[1] SHAN Chunxian;XIA Dengfu;LIU Zhaoyang;TANG Aikun(School of Energy and Power Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学能源与动力工程学院,中国镇江212013

出　　处：《汽车安全与节能学报》2022年第3期535-540,共6页Journal of Automotive Safety and Energy

基　　金：扬州市产业前瞻项目(YZ2021002);扬州市科技成果转化项目(YZ2021121)。

摘　　要：为延长纯电动汽车动力电池的循环寿命和续航里程,并提高整车安全性,设计了一种热电耦合液冷的电池热管理系统,搭建了实验测试台架,分析了电池组在放电过程以及预热过程的热特性。通过改变电压、流速、冷却液温度等参数,研究电池组散热性能。结果表明:在35℃环境温度和1C至2C循环充放电条件下,电池最高温度保持在41℃以下。相比于自然对流冷却和传统液冷,该文的热电冷却系统分别降低了10℃和7℃;单电池与电池组的最大温差分别在5℃、8℃以内,始终使电池处于适宜的温度区间。A thermoelectric-coupled liquid-cooling battery thermal-management system was designed to prolong the cycle life and endurance mileage of pure electric vehicle power batteries and improve the safety of the whole vehicle.An experimental test bench was built to analyze the thermal characteristics of the battery pack in the process of discharge and preheating.The heat dissipation performances of the battery pack were studied by changing the voltage,the flow rate,the coolant temperature,and the other parameters.The experimental results show that the maximum temperature of the battery is kept below 41℃when the battery is charged and discharged by 1C to 2C cycle at 35℃.Compared with natural convection cooling and liquid cooling,the thermoelectric cooling system reduces by 10℃and 7℃respectively.The maximum temperature difference between single battery and battery pack is within 5℃and 8℃respectively,which always keeps the battery in the appropriate temperature range.

关 键 词：汽车安全 新能源汽车 锂电池 冷却系统 热管理系统 液冷 热电单元 

分 类 号：TM912[电气工程—电力电子与电力传动]