以數位控制實現之三種鋰離子電池充電法則

Design and Implementation of Three Charging Methods for Li-ion Battery Using Digital Control

李長恩(Chen-En Lee)

指導教授 ： 歐勝源

國立臺北科技大學/電資學院/電機工程系所/碩士(2011年)

https://doi.org/10.6841/NTUT.2011.00135

摘要

本論文提出一種利用全數位化控制之降壓型直流/直流轉換器，實現三種鋰離子電池充電法則，分別為CC-CV、PULSE以及Motorola快速充電法，其中利用德州儀器之TMS320F2812為控制平台，藉由DSP實現充放電電池之閉迴路控制，包含電流迴路與電壓迴路，並使用程式控制實現三種充電法則。轉換器電路規格設計為輸入直流電壓7V，定電流輸出500mA (1C)，輸出電壓則為電池充電電壓所需範圍3.2V∼4.4V。
本論文所選用的鋰離子電池規格為3.7V/500mA。鋰離子電池具有無記憶效應、體積小容量大以及充電電壓較高等優點。本文分別以三種充電法則進行實驗，比較適合鋰離子電池的充電法則，其中使用CC-CV充電法之充電效率為71.94%，PULSE充電法之充電效率為77.99%，而Motorola充電法之充電效率為83.54%。

關鍵字

降壓型轉換器 ； PULSE充電法 ； Motorola快速充電法 ； 鋰離子電池

並列摘要

This thesis presents a fully-digitally controlled buck DC/DC converter as the charger to implement three charging methods for Li-ion battery. The used charging methods include CC-CV, PULSE and Motorola fast charging ones in which a DSP TMS320F2812 by Texas Instruments is adopted to control current and voltage closed loops and to implement three charging methods. The specifications are as follows: the input voltage is 7V, the output constant current is 500mA (1C) and the output voltage is from 3.2V to 4.4V.
The specification of the used Li-ion battery is 3.7V/500mA. Li-ion battery takes advantages of high energy density, high operation voltage and non-memory effect. Additionally, the thesis compares the implemented charging methods to provide a good suggestion on charging method for Li-ion battery. With the experimental results, the charging efficiency of CC-CV is 71.84%, PULSE is 77.99% and Motorola is 83.54%.

並列關鍵字

Buck Converter ； Pulse Charging Method ； Motorola Charging Method ； Li-ion Battery.

參考文獻

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