D-E級共振式換流蓄電池充電器

Battery chargers with Class D-E Resonant converter

李俊育(Jyun-Yu Li)

指導教授 ： 王永山

崑山科技大學/工程學院/電機工程研究所/碩士(2009年)

摘要

鉛酸蓄電池具有經濟效益，而在運用上也相當廣泛，如汽、機車電力系統、不斷電系統和電源供應器等，然而當電能使用完畢後必須以充電器來對蓄電池充電。所以本論文研製一D-E級共振式蓄電池充電器來對蓄電池補充電能，並提高充電效率以及延長蓄電池的使用壽命。
本文中D-E級共振式蓄電池充電器具有電路結構簡單、體積小、重量輕、充電效率高、低切換損失、成本價格低的優點。共振槽是利用電感與電容所組成的，可以經過共振產生所需的共振電壓和電流，並且經過開關切換來達到零電壓與零電流切換，得到所需的輸出電壓和充電電流。本文也針對電路操作特性原理與電路模式加以分析，且將此電路應用於12V-12Ah的鉛酸蓄電池來進行充電，並且結合電腦模擬與實作電路來驗證，其充電效率皆在80%以上。

關鍵字

充電器 ； 共振式 ； D-E級共振 ； 柔性切換

並列摘要

The lead-acid batteries has economic benefits, and widely used in various applications such as automotive power system, uninterruptible power system telecom power supply, and so on. However, charge the battery with the charger after the electric energy is used. The main aim of this thesis is to improve the charge efficiency and prolong the battery lifetime. Accordingly, a battery charge with class D-E resonant converter is proposed in this thesis.
In the proposed battery chargers with Class D-E resonant converter bears the advantages such as simpler circuit structures, smaller volume, lighter weight, higher efficiency, low switching loss, as well as lower cost. An L-C resonant tank is used that results in oscillating output voltage and charging current and thus provides zero-voltage and/or zero-current switching. The operating principles and equivalent circuit are analyzed and discussed in detail. Simulation and experimental results are conducted for a 12V-12Ah lead-acid battery to verify the feasibility, can reach an efficiency higher than 80%.

並列關鍵字

charger ； resonant ； classD-E resonant ； soft-switching

參考文獻

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