本論文提出在短時間內估測電池老化狀態的方法，且不需使用內電阻量測儀器，其乃利用電池於放電時的負載變化，再由暫態響應時間快速得知電池老化狀態，可節省大量量測成本與時間。為模擬不同狀態之電池老化情形，吾人須先建立電池老化狀態等效電路模型，用以分析其在負載變化時的暫態響應時間，進而推估電池老化的程度。而電池老化模擬所使用之參數乃是以文獻中所量測之電池阻抗譜與不同充放循環之阻抗值，用以獲得電池脈衝放電曲線，並以模擬與估測兩種方法來觀測電池阻抗與老化暫態時間的關係，較現有老化估測方法所需時間較短且不需使用昂貴的儀器。另一方面也可以估計電池之充放循環次數，做為電池管理系統的參考指標之一。

This thesis proposes a method to estimate the SOH of batteries by determining the transient response time under load changes with discharging conditions. The proposed method can estimate the SOH of batteries over a short period of time without measuring the internal resistance, resulting in knowing the status of SOH of a battery early and saving money. To simulate the SOH of a battery under different conditions, an equivalent circuit model is first established to analyze the transient response time during load changes and the SOH of a battery can then be estimated by the transient response time. In addition, the governing equations of SOH of a battery are derived by analyzing the transient response time of the impedance and pulse discharge curve of the battery. However, the pulse discharge curve is obtained according to the measured values of a battery impedance spectroscopy and battery impedances at different charge-discharge cycles in the published literature. This thesis uses two methods to analyze the stability time, which can estimate the SOH of battery over short period of time without expensive equipment.

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