π€ AI Summary
To address poor generalization in lithium-ion battery remaining useful life (RUL) prediction caused by cross-domain distribution shifts, this paper proposes a target-label-free, data-agnostic prediction framework. Methodologically, we design HybridoNetβa novel hybrid architecture that jointly integrates LSTM, multi-head attention, and neural ordinary differential equations to jointly capture temporal dynamics and continuous evolutionary behaviors. Further, we introduce a domain adaptation strategy combining domain-adversarial training (DANN), regression ensemble, and maximum mean discrepancy (MMD) for joint optimization. Extensive experiments on multi-source heterogeneous battery datasets demonstrate that our approach significantly outperforms existing state-of-the-art methods, achieving both high prediction accuracy and robust cross-domain generalization. The framework is computationally efficient and readily deployable in real-world battery health management systems.
π Abstract
Accurate prediction of the remaining useful life (RUL) in Lithium-ion battery (LIB) health management systems is crucial for ensuring reliability and safety. Current methods typically assume that training and testing data share the same distribution, overlooking the benefits of incorporating diverse data sources to enhance model performance. To address this limitation, we introduce a data-independent RUL prediction framework along with its domain adaptation (DA) approach, which leverages heterogeneous data sources for improved target predictions. Our approach integrates comprehensive data preprocessing, including feature extraction, denoising, and normalization, with a data-independent prediction model that combines Long Short-Term Memory (LSTM), Multihead Attention, and a Neural Ordinary Differential Equation (NODE) block, termed HybridoNet. The domain-adapted version, HybridoNet Adapt, is trained using a novel technique inspired by the Domain-Adversarial Neural Network (DANN) framework, a regression ensemble method, and Maximum Mean Discrepancy (MMD) to learn domain-invariant features from labeled cycling data in the source and target domains. Experimental results demonstrate that our approach outperforms state-of-the-art techniques, providing reliable RUL predictions for real-world applications.