Design of Single/Mixed Chemistry eVTOL Battery Packs

In this article, we discuss the design and optimization of battery packsBattery packages for eVTOL (electrical vertical takeoff and landing) applications. First, we present an overview of eVTOL and the challenges associated with eVTOL battery designs. It is followed by sample designs of a few well-known eVTOL designs. We designed battery packs for each of the applications with a variety of battery cell candidates. This section is followed by a description of tools used in this study. We then discuss the concept of using a mixed chemistry pack for eVTOL battery design, which proves to be a promising method that improves many shortcomings associated with single chemistry designs. At the end, using the simulationSimulation tools, we perform battery pack design for multiple eVTOL architectures, using both single chemistry and mixed chemistry battery configurations. The results are analyzed, and a summary of key takeaways are given. The purpose of this study is to establish a process for eVTOL battery pack design, for both single chemistry and mixed chemistry configurations. A tool for eVTOL battery simulationSimulation to facilitate battery design optimizationDesign optimization is also developed, as part of this study. We also use this as a chance to explore other advanced battery configurations to meet the challenging requirement of eVTOL batteries, in this case the mixed chemistry concept.