This research is aimed at modeling the complex explicit and implicit interactions between cells in a large battery pack through the use of electrochemistry, machine learning, and an experimental campaign. . Heterogeneous aging of lithium-ion (Li-ion) battery cells within a battery pack is a major challenge that limits the pack's overall performance, safety, and life. In this paper, we propose a hybrid online SoH estimation pipeline for series-connected heterogeneous cells. Implementing a single cell. . Large-scale battery packs are composed of numerous interconnected cells characterized by electrical and thermal interactions.
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