研究生: |
許甯易 Ning-Yi Hsu |
---|---|
論文名稱: |
具雙向返馳式轉換器之串聯電池組電量主動平衡技術 Active Charge Equalization Technique for Series-Connected Batteries with Bidirectional Flyback Converter |
指導教授: |
邱煌仁
Huang-Jen Chiu 謝耀慶 Yao-Ching Hsieh |
口試委員: |
林景源
Jing-Yuan Lin 劉益華 Yi-Hua Liu |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2015 |
畢業學年度: | 103 |
語文別: | 中文 |
論文頁數: | 73 |
中文關鍵詞: | 串聯電池組 、電量平衡 、雙向返馳式轉換器 |
外文關鍵詞: | Series-connected batteries, charge-equalization, bidirectional flyback converter |
相關次數: | 點閱:410 下載:1 |
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本論文針對串聯電池組,提出一種以雙向返馳式轉換器為基礎來達到電量平衡之電路架構。本文共有四組電池模組,將四組電池模組串聯形成一串聯電池組,每一個電池模組配合著一組雙向返馳式轉換器,本文共有四組。在電池模組放電時,藉由開關的切換,能量透過變壓器傳送至二次側之電容;反之,也藉由二次側開關的切換,二次側的電容透過變壓器傳送能量至一次側對電池模組充電,在本文中,二次側的電容像是緩衝區,儲存電池模組多餘的電量,再將電量傳送至需要被充電的電池模組。為了達到成本降低的目的,本論文使用純類比做為控制電路,不使用脈波寬度調變積體電路(Pulse Width Modulation Integrated Circuit, PWM IC ),皆使用運算放大器(Operational Amplifier, OPA)達到控制的功能,透過固定頻率、工作週期來達成串聯電池組之電量平衡。
本論文電池模組為四顆磷酸鋰鐵電池所組成,共有四組作為本文之實驗,將四組電池模組串聯形成串聯電池組,說明電量平衡的動作原理與工作模式,且經由實驗結果驗證此架構之可行性。
In this thesis, a charge-equalization circuit for series-connected batteries based on bidirectional flyback converters is proposed. In this thesis, there are four battery modules series-connected to form a battery pack. Each battery module is combined with a bidirectional flyback converter. When the battery module is discharged, by switching the primary-side switch, the energy transferred to the secondary-side capacitor through the transformer. Conversely, by switching the secondary-side switch, transmission of charge back to the primary-side battery module can be fulfilled. In this thesis, the capacitor on the secondary side behaves like a buffer, storing excess charge deprived from battery modules, and then retransmitted to the battery module that needs to be replenished. Due to cost reduction consideration, analog control circuitry is applied in this thesis. Pulse-width modulation integrated circuit is not considered; instead, discrete operational amplifiers are employed to accomplish the control functions. To achieve charge-equalization, fixed frequency and duty cycle gating signals are generated due to the absence of sensing circuit.
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