Journal
JOURNAL OF ENERGY STORAGE
Volume 21, Issue -, Pages 172-185Publisher
ELSEVIER
DOI: 10.1016/j.est.2018.11.012
Keywords
Li-ion batteries; Cell-to-cell variations; Inhomogeneities; Pack modeling; Series; Parallel; BESS
Categories
Funding
- state of Hawaii
- ONR Asia Pacific Research Initiative for Sustainable Energy Systems (APRISES) [N00014-17-1-2206]
- Engineering and Physical Science Research Council through the Engineering Doctoral Centre in High Value, Low Environmental Impact Manufacturing [EPSRC - EP/I01585X/1]
- Jaguar Land Rover
- WMG Centre High Value Manufacturing Catapult
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Battery pack modeling is essential to improve the understanding of large battery energy storage systems, whether for transportation or grid storage. It is an extremely complex task as packs could be composed of thousands of cells that are not identical and will not degrade homogeneously. This paper presents a new approach toward battery pack modeling by combining several previously published models into a comprehensive framework. This work describes how the sub-models are connected, their basic principles, what adjustments were necessary, and what new parameters needed to be introduced. Overall, this paper introduces an open modular framework for future work on, among others, the impact of cell-to-cell variations, inhomogeneous degradation, SOC and SOH tracking, balancing and performance forecast.
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