超充液冷充电电缆截面形状与结构优化  

Optimization of cross section shape and structure of overcharging liquid cooling charging cable

作　　者：贾璐萌 李宏杰 李旭涛 邓若宇 杜剑锋 王安红[1] Jia Lumeng;Li Hongjie;Li Xutao;Deng Ruoyu;Du Jianfeng;Wang Anhong(College of Electronic Information and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学电子信息工程学院,太原030024

出　　处：《低温与超导》2024年第6期35-41,共7页Cryogenics and Superconductivity

基　　金：国家自然科学基金(62072325);山西省研究生教育教改项目(2022YJJG190)资助。

摘　　要：通过对充电电缆冷却截面形状与结构优化的设计,可以在保证散热性能的前提下,实现液冷电缆的轻量化。首先建立液冷充电电缆散热性能与轻量化的函数,然后采用有限元仿真软件对不同几何形状的液冷充电电缆进行数值模拟,对比分析了不同电缆芯数、电流、流速、冷却通道结构参数等因素对充电电缆最高温度及重量的影响。结果表明,相同缆芯截面积下,扁平形充电电缆比圆形和矩形的散热性能分别降低22.4%和7%;多芯绞合结构优于单芯液冷充电电缆散热性能;冷却液最佳流速为0.25 m/s。优化后的扁平形液冷充电电缆缆芯截面积为70 mm^(2),冷却通道与缆芯截面积之比为1.75,其重量较相同散热性能的圆形液冷充电电缆减少50%。研究为超充场景下液冷充电电缆提高散热性能和轻量化设计提供了参考。By optimizing the shape and structure of the cooling section of the charging cable,the lightweight of liquid cooled cables can be achieved while ensuring heat dissipation performance.Firstly,a function was established for the heat dissipation performance and lightweight of liquid cooled charging cables.Then,finite element simulation software was used to numerically simulate liquid cooled charging cables with different geometric shapes.The effects of different cable cores,currents,flow rates,cooling channel structural parameters,and other factors on the maximum temperature and weight of the charging cable were compared and analyzed.The results show that under the same cross-sectional area of the cable core,the heat dissipation performance of flat charging cables is reduced by 22.4% and 7% comparing with circular and rectangular cables,respectively;The multi-core twisted structure has better heat dissipation performance than single core liquid cooled charging cables;The optimal flow rate of coolant is 0.25 m/s.The optimized flat liquid cooled charging cable core has a cross-sectional area of 70 mm~2,and the ratio of cooling channel to core cross-sectional area is 1.75.Its weight is reduced by 50% compared to circular liquid cooled charging cables with the same heat dissipation performance.The study will provide a reference for improving the heat dissipation performance and lightweight design of liquid cooled charging cables in overcharging scenarios.

关 键 词：充电电缆 液冷 几何形状 结构优化 有限元仿真 

分 类 号：TM246.9[一般工业技术—材料科学与工程] U469.72[电气工程—电工理论与新技术]