Liang He
Eugene Kim
ABSTRACT
Cell imbalance commonly found in large battery packs degrades their capacity delivery, especially for cells connected in series where the weakest cell dominates their overall capacity. In this paper, we present a case study of exploiting system reconfiguration to mitigate the cell imbalance in battery packs. Specifically, instead of using all the cells in a battery pack to support the load, selectively skipping cells to be discharged may actually enhance the pack's capacity delivery. Based on this observation, we propose CSR, a Cell Skipping-assisted Reconfiguration algorithm that identifies the system configuration with (near)-optimal capacity delivery. We evaluate CSR using large-scale emulation based on empirically collected discharge traces of 40 Lithium-ion cells. CSR is shown to achieve close-to-optimal capacity delivery when the cell imbalance in the battery pack is low and improve the capacity delivery by up to 94% in case of high imbalance.
- A Guide to Understanding Battery Specifications. http://web.mit.edu/evt/summary_battery_specifications.pdf.Google Scholar
- Battery University. http://batteryuniversity.com/learn/article/calculating_the_battery_runtime.Google Scholar
- Honda Civic Hybrid Battery Failure. http://www.aa1car.com/library/honda_civic_hybrid_battery.htm.Google Scholar
- Microsoft Aims for Smartphones That Run for a Week. http://www.technologyreview.com/news/528201/.Google Scholar
- Peukert's Law Tutorial. https://www.easycalculation.com/physics/classical-physics/learn-battery-capacity-discharge-time.php.Google Scholar
- Reconfigurable Battery Packs. http://arpa-e.energy.gov/q=arpa-e-projects/reconfigurable-battery-packs.Google Scholar
- Tesla Battery Failures Make Bricking a Buzzword. http://www.nytimes.com/2012/03/04/automobiles/Tesla-Battery-Failures-Make-Bricking-a-Buzzword.html.Google Scholar
- Tesla Model S Specification. http://www.teslamotors.com/support/model-s-specifications.Google Scholar
- The Basics of Arc Flash. https://www.geindustrial.com/sites/geis/files/gallery/The-Basics-of-Arc-Flash-Article_GE_Industrial_Solutions_0.pdf.Google Scholar
- Understanding "Arc Flash". https://www.osha.gov/dte/grant_materials/fy07/sh-16615-07/arc_flash_handout.pdf.Google Scholar
- M. Alahmad, H. Hess, M. Mojarradi, W. West, and J. Whitacre. Battery switch array system with application for JPL's rechargeable micro-scale batteries. Journal of Power Sources, 177(2): 566--578, 2008.Google ScholarCross Ref
- D. Andrea. Battery management systems for large Lithium-ion battery packs. Artech House, 2010.Google Scholar
- A. Badam, R. Chandra, J. Dutra, A. Ferrese, S. Hodges, P. Hu, J. Meinershagen, T. Moscibroda, B. Priyantha1, and E. Skiani. Software defined batteries. In SOSP'15, 2015. Google ScholarDigital Library
- B. Chai, J. Chen, Z. Yang, and Y. Zhang. Demand response management with multiple utility companies: A two-level game approach. IEEE Transactions on Smart Grid, 5(2): 722--731, March 2014.Google ScholarCross Ref
- S. Chandra, D. Gayme, and A. Chakrabortty. Coordinating wind farms and battery management systems for inter-area oscillation damping: A frequency-domain approach. Power Systems, IEEE Transactions on, 29(3): 1454--1462, May 2014.Google Scholar
- S. Ci, J. Zhang, H. Sharif, and M. Alahmad. Dynamic reconfigurable multi-cell battery: a novel approach to improve battery performance. In APEC'12, 2012.Google Scholar
- L. H. Goldberg. Battery cell balancing for improved performance in EVs. Electronic Products Magazine, 2011.Google Scholar
- L. He, L. Gu, L. Kong, Y. Gu, C. Liu, and T. He. Exploring adaptive reconfiguration to optimize energy efficiency in large-scale battery systems. In RTSS'13, 2013. Google ScholarDigital Library
- L. He, Y. Gu, C. Liu, T. Zhu, and K. G. Shin. SHARE: SoH-aware reconfiguration to enhance deliverable capacity of large-scale battery packs. In ICCPS'15, 2015. Google ScholarDigital Library
- L. He, E. Kim, and K. G. Shin. *-aware charging of lithium-ion battery cells. In ICCPS'16, 2016.Google ScholarCross Ref
- L. He, L. Kong, S. Lin, S. Ying, Y. Gu, T. He, and C. Liu. Reconfiguration-assisted charging in large-scale Lithium-ion battery systems. In ICCPS'14, 2014. Google ScholarDigital Library
- S. He, J. Chen, F. Jiang, D. K. Y. Yau, G. Xing, and Y. Sun. Energy provisioning in wireless rechargeable sensor networks. IEEE Transactions on Mobile Computing, 12(10): 1931--1942, Oct 2013. Google ScholarDigital Library
- H. Kim and K. G. Shin. On dynamic reconfiguration of a large-scale battery system. In RTAS'09, 2009. Google ScholarDigital Library
- H. Kim and K. G. Shin. Dependable, efficient, scalable architecture for management of large-scale batteries. In ICCPS'10, 2010. Google ScholarDigital Library
- T. Kim, W. Qiao, and L. Qu. Series-connected self-reconfigurable multicell battery. In APEC'11, 2011.Google ScholarCross Ref
- T. Kim, W. Qiao, and L. Qu. A series-connected self-reconfigurable multicell battery capable of safe and effective charging/discharging and balancing operations. In APEC'12, 2012.Google Scholar
- Y. Kim, S. Park, Y. Wang, Q. Xie, N. Chang, M. Poncino, and M. Pedram. Balanced reconfiguration of storage banks in a hybrid electrical energy storage system. In ICCAD'11, 2011. Google ScholarDigital Library
- G. Motors. Latest chevy volt battery pack and generator details and clarifications, 2016.Google Scholar
- N. Omar, P. V. d. Bossche, T. Coosemans, and J. V. Mierlo. Peukert revisited: Critical appraisal and need for modification for Lithium-ion batteries. Energies, 6(11): 5625--5641, 2013.Google ScholarCross Ref
- D. Raychev, Y. Li, and W. Shi. The seventh cell of a six-cell battery. In WEED'11, 2011.Google Scholar
- K. Vatanparvar and M. A. A. Faruque. Battery lifetime-aware automotive climate control for electric vehicles. In DAC'15, 2015. Google ScholarDigital Library
- H. Visairo and P. Kumar. A reconfigurable battery pack for improving power conversion efficiency in portable devices. In ICCDCS'08, 2008.Google ScholarCross Ref
Index Terms
- Resting weak cells to improve battery pack's capacity delivery via reconfiguration
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