心脏起搏器谐振式无线供能LCL-LCL的集成

doi:10.19595/j.cnki.1000-6753.tces.210790

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Abstract In order to reduce the volume and electromagnetic interference of the wireless charging system of the implantable pacemaker, a wireless power supply system with a series parallel (LCL-LCL) compensation integrated coupling structure and working frequency of 150kHz was designed based on the principle of magnetic coupling resonance. The resonant coil was integrated into the main coil instead of the inductance. Firstly, the coil model was established and optimized, and the influence of turn number and turn spacing on coil mutual inductance was analyzed. Accordingly, a rounded square coil with the best coupling coefficient was designed. Then, the transmission efficiency of the integrated system and the non- integrated structural system was compared, and the advantages of this structure in efficiency and volume were verified. The feasibility and safety of the implantable charging system were further evaluated by simulating three-dimensional human tissue, calculating the specific absorption rate, temperature rise and electromagnetic field intensity. The experimental results show that the transmission efficiency of the system can reach 73% when the coil center is aligned 8mm apart, which is 15% higher than that of the non integrated structure, and the maximum temperature rise is only 1.2℃.

Key words： Pacemaker integrated coil 3D human body safety assessment

Received: 01 June 2021

PACS:	TM724
	TN99

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	Chen Weihua
	Song Yiwei
	Yan Xiaoheng

Cite this article:

Chen Weihua,Song Yiwei,Yan Xiaoheng. Integration of Resonant Wireless Energy Supply LCL-LCL for Cardiac Pacemaker[J]. Transactions of China Electrotechnical Society, 2022, 37(12): 2924-2935.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210790 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I12/2924

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