Thermal Analysis of High-Power Lithium Battery Group

• Main Authors: Chen-Ting Wu, 吳振廷
• Other Authors: Fang-BorWeng
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/45050767028079834592

碩士 === 元智大學 === 機械工程學系 === 100 === In this study, use a different combination of charging and discharging experiments in a single cell and battery, the battery electrode surface temperature thermocouple wire measuring and recording temperature. The geometry of the copper resistance measurement line. Eight lithium battery string and the plastic housing and circuit board in a string of copper and 8 of lithium way test, the link of each battery is divided into eight strings together (8S1P) two four-string and (4S2P) two . In addition, the circuit board, to explore to play the string and the number of field-effect transistor and to analyze the heating of the battery。 The results show that the battery charge and discharge process of the single body, the larger the discharge current, the greater the temperature difference, the negative terminal of the battery can represent the temperature of the battery body. Battery pack, the discharge current, the greater the battery temperature is higher charging current is small, although a longer time, but the battery temperature is still lower than the temperature, the charge will affect the copper bus impedance on battery temperature, impedance in a certain extent, the temperature of the battery. Spot field-effect transistor, the higher the temperature near the battery temperature, causing its temperature to the temperature field-effect transistors and the total battery discharge current, the greater the total discharge current, the higher the temperature。