电源学报2024，Vol.22Issue(4)：209-218,10.DOI:10.13234/j.issn.2095-2805.2024.4.209
电动汽车无线充电系统金属异物检测灵敏度优化方法
Sensitivity Optimization Method for Metal Object Detection in Electric Vehicle Wireless Charging System
摘要
Abstract
To improve the metal object detection performance for an electric vehicle wireless charging system,a sensitivity optimization method for the detection coil was proposed.The equivalent electromagnetic model of a rectangular detection coil with a metal object approaching was established.The changing mechanism of the physical parameters of the coil was studied,and a theoretical formula for changes in the parameters of the detection coil which were caused by metal objects of different sizes was obtained.The influence of several configuration parameters on the sensitivity of the detection coil was analyzed,and the configuration of the detection coil was optimized by combining the actual operating conditions of wireless charging.Through the electromagnetic field simulation and experimental verification,the accuracy of the theoretical model was proved.Finally,a metal object detection experiment was carried out in a 3 kW wireless charging system,which verified that the metal object detection system built on the basis of the optimized detection coil can detect metal objects with a size of 25 mm and above.In addition,it had anti-interference capability.关键词
无线充电/金属异物检测/检测线圈灵敏度Key words
Wireless charging/metal object detection/sensitivity of detection coil分类
信息技术与安全科学引用本文复制引用
张彬,朱翀,张希..电动汽车无线充电系统金属异物检测灵敏度优化方法[J].电源学报,2024,22(4):209-218,10.基金项目
国家自然科学基金资助项目(52007119) （52007119）
上海市浦江人才计划资助项目(20PJ1407200)This work is supported by National Natural Science Foundation of China under the grant 52007119 （20PJ1407200）
Shanghai Pujiang Program under the grant 20PJ1407200 （）
