Design of the Measurement System for the AC Internal Resistance in Lead-Acid Battery

• Main Authors: Jia-Nan Hung, 洪嘉男
• Other Authors: Van-Tsai Liu
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/bj6u8h

碩士 === 國立虎尾科技大學 === 電機工程系碩士班 === 104 === This thesis proposes a system which measures the resistance of lead-acid battery without extra power supply online. This system could measure the resistance of dynamic battery. It is not necessary to remove the battery which can be measured. It is has better efficiency and convenience for energy storage system and difficult to remove the battery of place. According to (Electrochemical Impedance Spectroscopy, EIS) theory that could simplify complicate chemical reaction into simple electronic circuit model. Observing the response signal of the battery after that is injected sin-wave signal then resistance of battery can be measured. Reducing the impact on the signal wire to enhance the measurement accuracy by four-wire measurement method. The (Micro Controller Unit, MCU) is CPU of this system collocate hardware and algorithm. User could observe the status of resistance of battery by display module. The battery could be serviced with awful (State of Health, SOH) or (State of Charge, SOC) in immediately.