Unlocking the secrets of battery degradation: a transfer learning approach

GA, UNITED STATES, April 1, 2025 /EINPresswire.com/ -- A cutting-edge study has made significant advancements in battery lifetime prediction by utilizing transfer learning, a sophisticated approach that transfers knowledge across different data domains. This innovation enhances the accuracy of battery life predictions, a critical factor for ensuring product quality and accelerating progress in energy storage technologies.

Battery longevity is fundamental to the sustainable development of energy storage systems, with applications spanning consumer electronics, electric vehicles, and renewable energy grids. Despite the promise of machine learning, practical limitations such as restricted data availability and variations in battery states caused by environmental and operational factors continue to hinder its widespread application. These challenges underscore the need for advanced adaptive methods capable of leveraging diverse data sources to achieve accurate and reliable predictions.

On May 21, 2024, researchers from Shanghai Jiao Tong University and Southern University of Science and Technology published their findings in eScience. The team introduced two pioneering transfer learning techniques—Bayesian Model Fusion (BMF) and Weighted Orthogonal Matching Pursuit (W-OMP)—designed to address the complexities posed by state transitions in lithium-ion batteries. These approaches combine existing datasets with limited new observations to significantly enhance prediction models, offering a promising solution to a long-standing challenge.

In their research, the team demonstrated how BMF and W-OMP tackle the intricacies of predicting battery lifetimes. BMF refines pre-trained models by dynamically updating feature weights, while W-OMP integrates insights from multiple datasets to enhance reliability. These methods collectively achieved a 41% reduction in prediction errors compared to baseline models, setting a new standard in the field. Moreover, their explainable design revealed critical factors impacting battery degradation, including the influence of charging protocols and electrochemical behaviors during state transitions. This dual focus on accuracy and interpretability positions the models as practical tools for real-world battery management systems, while also advancing our understanding of underlying degradation mechanisms. These findings not only improve predictive power but also support the broader sustainability goals of the energy storage industry.

Dr. Yang Liu, co-lead author of the study, highlighted the transformative potential of this research: “Our work not only advances battery lifetime prediction but also sheds light on the root causes of performance variations. These insights could redefine how batteries are designed, manufactured, and maintained worldwide.”

The study’s implications are profound. Accurate and interpretable battery lifetime predictions can optimize production processes, lower costs, and improve operational safety. By incorporating these transfer learning methods into battery management systems, industries can enhance the sustainability and reliability of energy storage technologies, directly contributing to global efforts toward achieving carbon neutrality.

References
DOI
10.1016/j.esci.2024.100280

Original Source URL
https://doi.org/10.1016/j.esci.2024.100280

Funding information
This work is supported by the startup fund of Shanghai Jiao Tong University and Southern University of Science and Technology. S.J.H is supported by the Laboratory Directed Research and Development Program of Lawrence Berkeley National Laboratory under U.S. Department of Energy contract no. DE-AC02-05CH11231.

Lucy Wang
BioDesign Research
email us here