3D Thermal and Electrochemical Model for Spirally Wound Large Format Lithium-ion Batteries (Presentation)

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In many commercial cells, long tabs at both cell sides, leading to uniform potentials along the spiral direction of wound jelly rolls, are rarely seen because of their high manufacturing cost. More often, several metal strips are welded at discrete locations along both current collector foils. With this design, the difference of electrical potentials is easily built up along current collectors in the spiral direction. Hence, the design features of the tabs, such as number, location and size, can be crucial factors for spiral-shaped battery cells. This paper presents a Li-ion battery cell model having a 3-dimensional spiral mesh involving ... continued below

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23 p.

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Lee, K. J.; Kim, G. H. & Smith, K. October 14, 2010.

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In many commercial cells, long tabs at both cell sides, leading to uniform potentials along the spiral direction of wound jelly rolls, are rarely seen because of their high manufacturing cost. More often, several metal strips are welded at discrete locations along both current collector foils. With this design, the difference of electrical potentials is easily built up along current collectors in the spiral direction. Hence, the design features of the tabs, such as number, location and size, can be crucial factors for spiral-shaped battery cells. This paper presents a Li-ion battery cell model having a 3-dimensional spiral mesh involving a wound jellyroll structure. Further results and analysis will be given regarding impacts of tab location, number, and size.

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23 p.

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  • Presented at the 218th ECS Meeting, 14 October 2010, Las Vegas, Nevada

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  • Report No.: NREL/PR-5400-49795
  • Grant Number: AC36-08GO28308
  • Office of Scientific & Technical Information Report Number: 1004489
  • Archival Resource Key: ark:/67531/metadc846845

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  • October 14, 2010

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • April 4, 2017, 2:12 p.m.

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Lee, K. J.; Kim, G. H. & Smith, K. 3D Thermal and Electrochemical Model for Spirally Wound Large Format Lithium-ion Batteries (Presentation), article, October 14, 2010; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc846845/: accessed May 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.