BATTERY MANAGEMENT SYSTEM WITH AUTONOMOUS WIRELESS POWER AND DATA TRANSMISSION FOR INDUCTIVELY CHARGED IMPLANTABLE DEVICES

Date

2024-1-25

Author

Türkyılmaz, Ayşe Beyhan

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Battery power improves comfort in daily use for fully-implantable devices, through undisrupted operation. Proper charging improves the longevity of the rechargeable battery in these systems. The power supplied to the battery is generated in power amplifiers, transmitted across inductively coupled coils that are utilized for bidirectional telemetry as well, and finally rectified within the implant. The combination of these blocks is essential for inductively charged, fully-implantable devices. In this thesis, a class-E power amplifier of mean efficiency 87.2% with 2nd and 3rd harmonic suppression standard deviations of 0.43dB and 0.39dB for 1-12V, is implemented. Hereby, these supply levels are employed to electrically model the coupling change between coils. The wireless power and data transmission is realized autonomously, alongside multi discrete current battery charging. Utilizing multiple active rectifier modes is shown to improve maximum suppliable charging currents, by 39.9% and 53.1%, compared to sole half-wave and voltage modes, respectively.

Subject Keywords

Fully-Implantable Medical Devices, Wireless Power and Data Transfer, Wireless Battery Charging, Power Amplifier

URI

https://hdl.handle.net/11511/108724

Collections

Graduate School of Natural and Applied Sciences, Thesis