1
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Extensive Experimental Thermal Runaway and Thermal Propagation Characterization of Large-Format Tabless Cylindrical Lithium-Ion Cells with Aluminum Housing and Laser Welded Endcaps

      , , ,
      Journal of The Electrochemical Society
      The Electrochemical Society

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Large-format tabless cylindrical lithium-ion cells are expected to enhance performance and reduce cost of next generation vehicles. The influence of innovative new tab designs, increased dimensions and new housing materials are however still unexplored and must be revealed to unlock safe future battery systems. In this study, the thermal runaway and thermal propagation characteristics of sophisticated state-of-the-art large-format tabless cylindrical cells with aluminum housing and laser welded endcaps are extensively characterized. Multiple abuse test setups on cell and battery level are custom designed close to the true boundary conditions in real world applications. Results show cells with aluminum housing require careful choice of trigger methods as the low melting point and less mechanical strength compared to conventional nickel-plated steel housings introduce additional challenges. The tabless design was found to act as a strong mechanical connection that prevents shifting of the electrode assembly. Instead, axial ruptures of the jelly roll may occur. The leftover high density material conglomeration that is in tight contact with the inner housing wall transfers heat into the surroundings and is critical for thermal propagation safety. Strong interstitial potting compound with low thermal conductivity successfully prevented any major convective heat transfer into the neighboring cells by venting gas.

          Related collections

          Most cited references39

          • Record: found
          • Abstract: found
          • Article: found
          Is Open Access

          In-operando high-speed tomography of lithium-ion batteries during thermal runaway

          Prevention and mitigation of thermal runaway presents one of the greatest challenges for the safe operation of lithium-ion batteries. Here, we demonstrate for the first time the application of high-speed synchrotron X-ray computed tomography and radiography, in conjunction with thermal imaging, to track the evolution of internal structural damage and thermal behaviour during initiation and propagation of thermal runaway in lithium-ion batteries. This diagnostic approach is applied to commercial lithium-ion batteries (LG 18650 NMC cells), yielding insights into key degradation modes including gas-induced delamination, electrode layer collapse and propagation of structural degradation. It is envisaged that the use of these techniques will lead to major improvements in the design of Li-ion batteries and their safety features.
            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Thermal Runaway of Lithium-Ion Batteries without Internal Short Circuit

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Model-based thermal runaway prediction of lithium-ion batteries from kinetics analysis of cell components

                Bookmark

                Author and article information

                Contributors
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                (View ORCID Profile)
                Journal
                Journal of The Electrochemical Society
                J. Electrochem. Soc.
                The Electrochemical Society
                0013-4651
                1945-7111
                December 13 2023
                December 01 2023
                December 13 2023
                December 01 2023
                : 170
                : 12
                : 120512
                Article
                10.1149/1945-7111/ad0cd3
                c4b0b192-dfb3-4a73-beed-f2eae136f63d
                © 2023

                http://creativecommons.org/licenses/by/4.0/

                History

                Comments

                Comment on this article