Abstract ▼ AI-Helper

In this paper, we propose a multi-layer coil (MLC) for wireless charging for small electronic devices(SED) such as implantable medical devices(IMD) and wearable devices. Various types of coils are being studied to increase the efficiency of wireless power transfer (WPT). However, the sizes and shape...

In this paper, we propose a multi-layer coil (MLC) for wireless charging for small electronic devices(SED) such as implantable medical devices(IMD) and wearable devices. Various types of coils are being studied to increase the efficiency of wireless power transfer (WPT). However, the sizes and shapes of WPT coils for SED are limited, and also it is difficult to apply the conventional spiral and helical coils to SED. Therefore, in this paper, we propose a multi-layer coil and equivalent model with combination of spiral and helical coil. In order to verify the effectiveness of MLC, the simulation results of the proposed equivalent model are compared with the experimental results. As a result, the average power transfer efficiency (PTE) of SC (Spiral Coil) and HC (Helical Coil) was 6.1% and 7.6% in 10mm∼25mm transfer distance, respectively, and on the other hand, the average PTE of MLC was 48.4%.