重庆大学学报2024，Vol.47Issue(8)：65-80,16.DOI:10.11835/j.issn.1000.582X.2024.08.007
电动汽车无线充电系统恒流/恒压输出与抗偏移磁能耦合机构研究
Research on constant current/constant voltage output of electric vehicle wireless charging system and anti-offset magnetic energy coupling mechanism
摘要
Abstract
In the EV (electric vehicle) wireless charging system,the charging process of the loaded lithium battery is constant current followed by constant voltage. Therefore,the WPT(wireless power transfer) system needs to have the ability to achieve two output states at the same time,and smoothly switch between the two output states. Based on this,this article analyzes the conditions for achieving load independent constant current and constant voltage output in a bilateral LCC(inductor-capacitor-capacitor) topology,and provides a parameter design method. In response to the possibility of random displacement in different directions in the system,a bidirectional coaxial planar coil structure is adopted,where the primary coil is composed of two coils wound in opposite directions,inner and outer,in series. The proposed EV wireless charging system has the ability to simultaneously achieve constant current/voltage output through simulation and experimental verification,and can still achieve stable output under multi-directional offset conditions.关键词
电动汽车/恒流/恒压输出/耦合机构/抗偏移/移相控制Key words
electric vehicles/constant current/constant voltage output/coupling mechanism/anti-offset/phase shift control分类
信息技术与安全科学引用本文复制引用
陆虹辰,董金熹,刘浠流,陈冠霖,张景海..电动汽车无线充电系统恒流/恒压输出与抗偏移磁能耦合机构研究[J].重庆大学学报,2024,47(8):65-80,16.基金项目
广西电网公司科技项目(040200KK52210009).Supported by Guangxi Power Grid Company Technology Project(040200KK52210009). （040200KK52210009）
