- Guangsheng Zhang, The University of Alabama, Huntsville
Temperature distributions in large-format lithium-ion battery cells are typically nonuniform due to very low thermal conductivity of battery materials, making thermal management challenging. The challenge is exacerbated by the trend of increased energy density, power density (e.g., for extremely fast charging), and battery size (e.g., 94 Ah cells in the BMW i3). Internal temperature sensing and internal thermal management are powerful tools for addressing the challenge. Recent progress on this topic will be discussed; for example, robust temperature sensors embedded in 10 Ah cells have survived more than 2,500 cycles, and a novel self-heating Li-ion battery with embedded heaters increased the range of an electric vehicle by ~50% in the cold without influencing vehicle mobility. Future research involving in situ diagnosis and thermal management of large-format Li-ion batteries will also be discussed.
About the Speaker:
Dr. Guangsheng Zhang is currently an assistant professor in the Department of Mechanical and Aerospace Engineering at The University of Alabama in Huntsville. His research focuses on on situ diagnosis and thermal management of batteries and fuel cells for electric vehicle, aerospace, and renewable energy storage applications.