本論文針對可攜式電子產品，提出一非接觸式感應充電技術之充電電路，不同於傳統上金屬連接充電方式，非接觸式感應充電技術係利用電磁耦合之原理來達成。本文中以CI型感應結構為主要電能傳輸元件，並利用補償電容改善其轉換效率，在初級側控制器則使用脈波寬度與脈波頻率交互調變的方式，使其具有良好的線調節並減少功率損失。次級側的充電電路則參考定電流與定電壓充電法，以較小濾波電感的降壓充電電路來達成充電波形，並對3.6V/600mAh鋰離子電池進行充電，最後利用微控制器PIC16F873完成充電電路之建構，並以實驗結果和數據驗證非接觸式感應充電技術之可行性。

This thesis proposes a charging circuit based on contactless inductive charging techniques for portable electronic devices. Inductive charging techniques are unlike conventional charging techniques which have direct electrical connections. The CI core is used to transfer power and improved by using the compensative capacitors. In the primary side the pulse width modulation(PWM) and pulse frequency modulation(PFM) alternate control that have good line regulation and decrease the power loss is presented. In the secondary side the buck-type charging circuit that refers to CC-CV charging algorithm is implemented by PIC16F873 microcontroller. Finally, the charging circuit is experimentally verified on a 3.6V/600mAh lithium-ion battery. Experimental results and charging processes are provided for verification.

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