本文提出一數位可程式電流脈衝充電器，利用數位信號處理器控制正負電流脈衝，探討不同正負脈衝波形對電池充電效率與溫昇之影響。此數位化具能量回送正負脈衝電池充電器電路架構是以串級電路組成，前級將交流市電整流後以半橋轉換器提供一電壓源，後級為混合式雙向降/升壓型轉換器，利用降壓型轉換器提供電池之正脈衝充電，使用升壓型轉換器提供電池之放電脈衝，並將放電能量儲存於半橋轉換器之輸出電容中。脈衝充電器結合電腦與數位電表，監控並檢測充電與放電過程之電池電壓與溫度，以瞭解正負脈衝電流大小與時序對電池儲能效率與電池溫昇之影響。

A programmable positive/negative pulse battery charger based on digital controller is proposed in this thesis. The proposed circuit topology is constructed by two-cascaded converters. The first converter is an isolated half-bridge converter which provides a voltage source for the charger converter. A bi-directional hybrid buck-boost converter is used to control the pulse current and pulse width. During the positive pulse charging mode, the buck converter supplies the energy to the battery. On the contrary, the battery energy is fed back to the capacitor by the boost converter during the negative pulse discharging mode. The charging and discharging processes are controlled and measured to analyze the factors that may influence the charging efficiency and battery temperature.

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