摘要
本論文的主要目的在於使用一個自激式諧振轉換電路搭配適當的微控制器以及薄型磁性元件，開發出一個可攜式感應耦合型的充電裝置。當此裝置的傳送器與接收器相距2mm時，對電池以5V/1A的條件充電時，其傳輸效率可達70%。 首先，我們將在傳送器上內建鋰聚合物電池以及其充電管理IC，用來提供升壓轉換器與微控制器的工作電壓。第二，我們將使用升壓轉換器提升電壓給傳送器上初級測的變壓器繞組，並且以初級側的電流做回授，以調節升壓轉換器的輸出。第三，微控制器負責控制充電的程序以及執行保護的動作。第四，使用整流電路與穩壓調節電路組成接收器。最後經由整合以上部分，即可完成一可攜型非接觸式充電器。 本論文貢獻如下： (1) 輕量化: 同時結合無線充電器與行動電源成一可攜式裝置。 (2) 初級側電流回授：此方法不需要複雜的軟體演算機制。 (3) 低成本: 可量產化的可攜型非接觸式充電器。
關鍵字
非接觸式充電並列摘要
This thesis is to develop portable inductive coupled charging device, which uses a self-oscillating resonant converter with suitable MCU and low profile magnetic components. The transmission efficiency is up to 70% when the device charges to the battery with 5V / 1A condition and the gap is 2mm between transmitter and receiver. First, we built-in Li-Polymer batteries and its charge-management controller on the transmitter to provide the operating voltage of boost converter IC and MCU. Second, we use a boost converter to apply voltage on the transformer primary winding, and feedback the primary side current to regulate the output of boost converter. Third, a MCU is used to control the charge process and execute protection function. Fourth, we use rectifier and regulator circuit as the receiver. After integrating mentioned parts, finally, we get the portable contactless charger. The contributions of this thesis are as below: (1) Light-weight: Combining contactless charger and power bank makes it become a portable device. It can be put into a pocket. (2) Primary-side current feedback: The complexity algorithms of software are unnecessarily. (3) Competitive cost: This could be a commercialized portable contactless charger.