The Research of the Battery Electricity Capacity Measurement Module Combined with Near Field Wireless Communication

• Main Authors: Chih-jhe Yang, 楊志哲
• Other Authors: Jyh-Cherng Gu
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/y6taa7

碩士 === 國立臺灣科技大學 === 電機工程系 === 99 === The objective of this research is to design a electricity capacity measurement module and develop a precision electricity capacity mearurement method of the battery.We use the Hall Current Sensing Method to measure Charge and Discharge current and combinate Near Field Communication to transmit and record each situation of the battery in the Electric Vehicle . So far each method of the electricity capacity measurement has advantage and disadvantage. In this research we use Coulometric Method to measure the electricity capacity and predict the error capacity, and our electricity capacity measurement method is able to predict electricity of the battery and record each using status in the battery. The electricity capacity measurement module can judge that operate in charge state or discharge state. In both charge state and discharge state use ampare-hour method to caculate electricity capacity. Beside calculate the electricity capacity, it also calculates number of times of the both charge and discharge; research the situation of each electricity capacity measurement when Electric Vehicle operate in each traffic circumstance. We also transmit data to data reader by the wireless module (ZigBee Wireless Module) of the Battery Electricity Capacity Measurement Module, and then computer reads data via UART or USB and express it on the computer.