[[alternative]]Design and Implementation of State-of-Charge Measurement and Energy Management System

碩士電機工程學系[[abstract]]本文的研究主題包括鉛酸電池的剩餘電量量測，以及電動車的能量管理。利用電化學的原理求出由電極反應所產生的電阻效應，進而估算電池的電解液濃度，可以正確的計算出電池的剩餘電量，此一方法是即時的可以用數位訊號處理器來實現。能量管理的方法是根據電動機車行駛於不同道路所需的轉速轉矩特性，來計算耗電量及可再行駛的里程，並配合電池與馬達的特性來設計電池電量的管理方法。實驗的方法是對鉛酸電池進行各種充放電測試，由充放電特性以及內阻的變化來進行鉛酸電池容量分析及剩餘電量量測，藉此驗證本文的剩餘電量量測的準確性。系統測試是將電動機車架設於測試平台上進行測試，包含了測試平台參數量測、耗能指數量測及剩餘里程預估，這些實驗可以評估能量管理的可靠性。實驗結果證明本文的剩餘電量量測及能量管理的方法是可以達到系統運轉最佳化，有效降低系統損失及提高整體效率，進而增加電動車的續航力。[[abstract]]This thesis investigates estimation of the state-of-charge in lead-acid batteries and battery energy management for battery powered motorcycles. The electrochemical resistance variations in the electrolyte concentrations are estimated for the state-of-charge. This is a real time approach that can be implemented using a digital signal processor. The torque and speed characteristics of a battery powered motorcycle ridden on different road types are used to calculate the energy consumption at various driving ranges. In these experiments, the lead-acid batteries were charged and discharged using different procedures to obtain the variations in the charge and resistance profiles to analyze the accuracy of the proposed methods for estimation the capacitances and residue energies. A test platform was designed using a dynamometer to test the motorcycle. The dynamometer parameters, energy index and driving mileages were tested to evaluate the energy management reliability. The experimental results showed that the methods used to estimate the state-of-charge and manage the energy consumption could optimize the driving mileage in one battery charge for a battery powered motorcycle