隨著今日環保意識的抬頭及電池技術的發展，為降低噪音、空氣污染及石化燃油消耗，使得以電動車全面汰換油汽車的風潮順勢而起。由於鋰離子電池具有高能量密度、易維護、高開路電壓、低自放電率及沒有記憶效應等優勢，遂成為今日電動車的電源首選，然而鋰離子電池的性能及壽命卻與充電的方法與充電器品質息息相關。
針對目前市售之輕型電動車用電池模組，本論文提出以模糊控制為基礎之鋰離子電池模組充電器(Fuzzy-Control-Based Battery Charger, FCBBC)，本文提出之FCBBC可以一般筆記型電腦常用之適配器電源為輸入，並依照電池組之化性需求而即時改變充電電流。
本文所實現之充電器採用升壓式轉換器架構及溫度取樣電路，並使用Microchip公司之dsPIC33FJ16GS502為控制核心，其中軟體包含數位補償器、數位濾波器及模糊控制器。所實現之FCBBC以電池組溫差及電池容量狀態為輸入變數，經模糊控制來適應性改變鋰電池組之充電電流；由實驗結果顯示所提出之充電技術可提升鋰電池組之充電效能與壽命，達成實用之目的。

Today’s concerns about the environment, particularly noise and exhaust emissions, coupled with new developments in batteries make electric vehicles (EV) favorable. Lithium-ion (Li-ion) batteries have emerged as the major power source for today’s EV because they can offer advantages such as high energy density, low maintenance requirement, high open circuit voltage (OCV), low self-discharge rate and lack of memory effect. The performance and lifespan of Li-ion batteries are closely related to the quality of their charger. In this thesis, a fuzzy-control-based battery charger (FCBBC) which can be embedded into the Li-ion battery pack for light electric vehicles is proposed. The proposed embedded battery charger can charge the Li-ion battery pack using the commercially available adaptor as the power source, and charge the battery according to the chemical requirement. The hardware and firmware parts of the proposed system are described in detail. In this thesis, the power stage is implemented using the boost converter and a temperature sensing circuit. The software consists of a digital compensator, a digital filter and a fuzzy controller, and is realized using the dsPIC33FJ16GS502 microcontroller from Microchip Corp. The proposed FCBBC takes the temperature and state of charge (SOC) information into account and adjusts the charging current accordingly. According to the experimental results, the performance of the proposed charger can be improved.

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