本篇論文研究一種以微控制器為基礎之可攜式多功能電力盒，能控制多來源輸入電力，高效率地儲存電能於磷酸鋰鐵磷電池之直流匯流排，透過多組輸出及高效率之降壓及昇壓轉換器、直流/交流電力轉換器，能迅速提供電力給不同之電子設備。目前各種行動電源或太陽能充電包大都為單一輸入電力，並不能滿足實用性，而且各電力輸入來源都必須考量轉換效率，才能於各種不同電力需求來源時，迅速提供充足電力於儲存電池。儲能電池輸出轉換，能夠提供不同種類的輸出電力給電子裝置，如直流與交流電力可同時輸出使用，才能使行動電源能於消費者各種環境下，提供電力輸出給各種可能之電力裝置。單一組轉換輸出電壓並且還要透過次級的電壓轉換器提供合適電壓給不同的電氣裝置，使得總體轉換效率變低。以微控制器測量各電力來源輸入及充電控制、電力轉換電路之安全控制輸出，以滿足電力裝置之安全要求。

In this dissertation, a microcontroller-based portable multifunctional power box is studied to control power from multiple sources to the highly efficient energy storage provided by the direct current (DC) bus of a lithium iron phosphate (LiFePO4) battery. Through multiple output, high-efficiency buck and boost converters, and DC-to-AC converter, the power box can quickly and simultaneously provide three sets of voltage outputs, 5-VDC, 19–22-VDC, and 110-VAC, to different electronic devices. Multiple sets of conversion output voltages were achieved using multiple sets of converter circuits, in parallel to the DC bus. Compared with a single conversion output voltage, the multiple sets of conversion output voltages from the energy-storage battery had a higher practicability. For a single output voltage, the battery provided a suitable voltage to different electric devices via a substage converter, thus lowering the overall conversion efficiency. For safety considerations, a single-chip controller is used to quickly detect various over-current situations.

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