Development of a Battery Management System for Series Battery Pack

• Main Authors: Min-Hsu Wu, 吳敏旭
• Other Authors: Yi-Hwa Liu
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/17241430461001883235

碩士 === 長庚大學 === 電機工程研究所 === 92 === Battery management systems (BMSs) are used in many battery-operated industrial and commercial systems to make the battery operation more efficient. Battery management is relatively simple in low-power applications and, thus, a great number of integrated solutions are available. However, in high-power systems, long battery strings of batteries are used and the probability of problem occurrence is increased. In this thesis, a MSP430f449-based battery management system for series connected battery pack which may contain up to seven battery cells is presented. The proposed BMS consist of a charger、a graphical Windows-based monitoring user interface、a digital control board and peripheral modules. In order to enhance the accuracy of the measurement, digital signal processing (DSP) techniques are used to implement the control algorithm. According to the experimental results, the mean error of the battery voltage reading is less than 20 mV, and the battery charge/dischage protection is successfully realized.