心脏起搏器无线电能传输LCC-LCC磁集成印刷螺旋线圈研究  

Research on Wireless Power Transmission for Cardiac Pacemakers Using LCC-LCC Magnetic Integrated Printed Spiral Coil

作　　者：陈伟华[1] 宋宇航 闫孝姮[1] 姚金姝 葛帅帅 Chen Weihua;Song Yuhang;Yan Xiaoheng;Yao Jinshu;Ge Shuaishuai(Faculty of Electrical and Control Engineering Liaoning Technology University,Huludao 125000 China)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125000

出　　处：《电工技术学报》2024年第17期5289-5299,共11页Transactions of China Electrotechnical Society

基　　金：2020年辽宁省教育厅科学研究青年科技人才“育苗”项目(LJ2020QNL019);2023年辽宁省教育厅科学技术研究面上项目(JYTMS20230815)资助。

摘　　要：为实现植入式心脏起搏器无线电能传输系统的体积小型化以及改善系统的传输性能,该文提出一种基于LCC-LCC磁集成印刷螺旋线圈(PSC)的心脏起搏器无线电能传输系统。首先,建立线圈模型,研究在填充比率固定条件下PSC的匝宽和匝间距对传输效率的影响,确定最佳的线圈参数;其次,建立非集成式和集成式耦合机构的仿真模型,计算不同偏移情况下两种耦合机构的磁场分布情况;最后,搭建非集成式与集成式无线电能传输系统,验证集成结构在传输性能方面的优势。结果表明:在12mm的传输距离下,传输效率由62.3%提升至68.1%,输出功率提升了0.39W。此外,通过模拟计算无线充电过程中电场强度和比吸收率(SAR)值在人体内的分布情况,对系统进行安全评估。集成式PCS的提出有助于推进心脏起搏器无线电能传输系统的产品化进程。Cardiac pacemakers,reliant on lithium batteries,necessitate frequent surgical replacements due to limited capacity.Magnetically coupled resonant wireless power transfer(MCR-WPT)technology holds substantial potential for implanted medical devices,but challenges such as transmission efficiency and safety require resolution.In the MCR-WPT system,the composite compensation topology enhances system robustness under offset conditions while meeting constant voltage or constant current output requirements.However,the independent inductance contributes to an increased volume,constraining its application in implantable devices.To address this issue,this paper proposes a wireless power transmission system for cardiac pacemakers based on the LCC-LCC magnetically integrated printed spiral coil(PSC),achieved by incorporating the compensation inductor into the main coil in concentric circles.By constructing a coil model to analyze the impact of turn width and turn spacing on the transmission efficiency of PSC under a fixed filling ratio,the optimal PSC structure is determined.Simulation models for non-integrated and integrated coupling mechanisms are established,and the magnetic field distribution is calculated under lateral and angle offset conditions.Concurrently,a comparison is made between the non-integrated MCR-WPT system and the integrated MCR-WPT system.Experimental results demonstrate that the integrated structure exhibits superior anti-offset capability and transmission efficiency compared to the non-integrated counterpart.At a frequency of 6.78 MHz,the integrated MCR-WPT system achieves a transmission efficiency of 68.1%and an output power of 1.28 W.In comparison with the non-integrated structure,the integrated structure shows a 5.8%increase in transmission efficiency and a 0.39 W boost in output power.In the offset experiment,a horizontal offset of 20 mm for the receiver results in a notable enhancement in the transmission efficiency of the integrated MCR-WPT system,rising from 19.5%to 36.8%compared to the non-integr

关 键 词：无线电能传输 心脏起搏器 磁集成 印刷螺旋线圈 

分 类 号：TM724[电气工程—电力系统及自动化]