| Summary: | 碩士 === 國立聯合大學 === 化學工程學系碩士班 === 104 === The malfunction of equipment would show some signs, such as the amount of vibration, sound, electricity, light, temperature, pressure and so on, and we can detect the sign’s problems through these measurements of various physical quantities. RFB (Redox flow battery) generate the consumption of electric power in working state, and that will transfer into a thermal form emanation in normal or abnormal state; therefore, it is important to control the thermal effect for battery’s performance and safety improvement. Specifically, RFB will bring big thermal effect when the cell is charged or discharged by the higher electric current. Due to the different battery’s components and stack designs, RFB system maybe has the problems of uneven heat distribution and reduces the battery's performance and life cycle. Therefore, it is important to understand the battery’s thermal effect in high-rate discharge or its thermal effect in overcharge cases for the state of battery’s health (SOH). The measurement of temperature can be divided into contact method and non-contact method, but the contact thermometer only obtains a single point temperature of the matter’s surface, not easy to find out the real hot spots. Infrared thermal imager (IRTI) is a non-contact measurement, and that is composed by the lens and computer analysis system. IRTI can detect a certain area of the temperature change, whereby the analysis can effectively identify the real hot spots, and make further improvements for RFB system’s design.
In this study, we will develop a single cell to design the battery’s stack of RFB system and investigate battery’s performance changes. Using infrared thermal imaging technology analyzes effectively and evaluates the thermal effect of battery's stack. Furthermore, we will further modify the electrode, develop novel cation-exchange membrane and find new electrolyte solution to replace the all-VRFB system.The high-resolution images with the function of the temperature distributed data can evaluate the components of the stacks or the key materials for battery performance, and to explore the possibility of its development.
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