臺灣博碩士論文加值系統

本論文在電池充電過程中，利用高壓式交流內阻量測電路量測電池的交流內阻(AC internal resistance, AC-IR)，其好處是在充電初期就得知電池的SOH，若SOH表現不佳則停止充電。
研究方式分成三個方面進行: (1)高壓式交流內阻量測電路(High Voltage AC-IR Measurement Circuit，HARC)搭配變動式電流對電池充電，進一步擾動電池AC-IR，而且在1 kHz下量測電池AC-IR-1kHz。(2)變動式電流分成第一階段(1 C-rate)與第二階段(0.1 C-rate)對電池充電時，在第一階段不量測AC-IR-1kHz，第二階段量測多點的AC-IR-1kHz以形成函數f(x)，接著利用歐姆-秒累加演算法來估算電池SOH；(3)當具有單電池芯的AC-IR-1kHz量測技術後，可針對串聯式電池組量測AC-IR-1kHz，藉此得知新舊電池的AC-IR-1kHz之變化。本論文的研究成果，AC-IR-1kHz搭配歐姆-秒累加演算法後，不僅能夠在充電中加速得知電池芯的SOH，另外，根據AC-IR-1kHz的量測方式，若電路中的運算放大器能夠承受高壓，理論上，該方法也可以量測50串甚至更高的電池組，目前論文的實驗設定量測15串電池組的AC-IR-1kHz之變化，其實驗結果令人滿意。

The advantage of the proposed method lies in obtaining the SOH of the battery at the initial stage of battery charging, and charging would be terminated if the battery was determined of poor SOH.
The research method is divided into three aspects: (1) High-voltage AC-IR measurement circuit (HARC) was used with a variable current to charge the battery, further disturbing the battery’s AC-IR and measuring it at 1 kHz (AC-IR-1kHz). (2) The variable current was divided into the first stage (1 C-rate) and the second stage (0.1 C-rate) to charge the battery. AC-IR-1kHz was not measured in the first stage; for the second stage, AC-IR-1kHz was measured at multiple points to form the function f(x). Subsequently, an ohm-sec.-accumulation algorithm was performed to estimate the battery’s SOH. (3) The technique for single cell AC-IR-1kHz measurement could be applied to measure the AC-IR-1kHz of battery pack in series connection and then to determine the AC-IR-1kHz changes of old and new batteries. According to the results of this study, the proposed method, combining AC-IR-1kHz measurement with the ohm-sec.-accumulation algorithm, was efficient in determining the SOH of the battery cell during the charging process. Moreover, if the operational amplifier in the circuit can withstand high voltage, the proposed method can, in theory, be used to measure a battery pack with 50 or more battery cells connected in series. The study’s experimental results obtained from measuring AC-IR-1kHz changes in a battery pack with 15 battery cells connected in series were satisfactory.

摘要...i
Abstract...ii
誌謝...iii
目錄...iv
表目錄...vi
圖目錄...vii
第一章 緒論...1
1-1 研究背景...1
1-2 研究目的...2
1-3 論文大綱...3
第二章 電池健康狀態與電池內阻量測技術...4
2-1 電池內阻量測技術...4
2-1-1 直流內阻(DC-Internal Resistance,DC-IR)量測...4
2-1-2 交流內阻(AC-Internal Resistance,AC-IR)量測...5
2-2 電池健康狀態(SOH)之定義...6
第三章 電池健康狀態之測試平台...7
3-1 隔離式訊號放大器...7
3-2 高壓式交流內阻法...11
3-3 濾波電路...13
第四章 AC-IR量測與SOH估測...22
4-1 AC-IR量測...22
4-2 歐姆-秒累加演算法估測SOH...38
4-2-1 歐姆-秒累加演算法 [16]...38
4-2-2 改良式變動電流法...39
4-2-3 SOH估測數據...40
第五章 結論與未來展望...46
5-1 結論...46
5-2 未來展望...46
參考文獻...47

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