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Modular battery energy storage system design factors analysis to improve battery-pack reliability.pdf (1.092Mb)
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Title
Modular battery energy storage system design factors analysis to improve battery-pack reliability
Author
Dorronsoro, Xabier ccMondragon Unibertsitatea
GARAYALDE, ERIK ccMondragon Unibertsitatea
IRAOLA, UNAI ccMondragon Unibertsitatea
Research Group
Almacenamiento de energía
Published Date
2022
Publisher
Elsevier
Keywords
Battery-pack
lithiumion battery
Low voltage
Modular batteries ... [+]
Battery-pack
lithiumion battery
Low voltage
Modular batteries
reliability [-]
Abstract
Traditional battery energy storage systems (BESS) are based on the series/parallel connections of big amounts of cells. However, as the cell to cell imbalances tend to rise over time, the cycle life o ... [+]
Traditional battery energy storage systems (BESS) are based on the series/parallel connections of big amounts of cells. However, as the cell to cell imbalances tend to rise over time, the cycle life of the battery-pack is shorter than the life of individual cells. New design proposals focused on modular systems could help to overcome this problem, increasing the access to each cell measurements and management. During the design of a modular battery system many factors influence the lifespan calculation. This work is centred on carrying out a factor importance analysis to identify the most relevant variables and their interactions. The analysis models used to calculate the reliability of the batteries are the state of health (SoH) and the Multi-State System (MSS) analysis with the Universal Generating Function (UGF), while electronic devices reliability is approximated using constant failure rate achieved with FIDES guide. Thus, it is determined numerically that module redundancy, cell capacity, module voltage and their interactions are the most determinant design characteristics. [-]
URI
https://hdl.handle.net/20.500.11984/5876
Publisher’s version
https://doi.org/10.1016/j.est.2022.105256
ISSN
2352-152X
Published at
Journal of Energy Storage  Vol. 54. Artículo 105256. October, 2022
Document type
Article
Version
Submitted
Rights
© 2022 Elsevier
Access
Embargoed Access (until 2024-10-31)
Collections
  • Articles - Engineering [483]

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