Efficient and Extensible Quasi-Explicit Modular Nonlinear Multiscale Battery Model: GH-MSMD

Kandler Smith, Chuanbo Yang, Gi-Heon Kim, Jacob Lawrence-Simon, Gi-Heon Kim

Research output: Contribution to journalArticlepeer-review

21 Scopus Citations

Abstract

Complex physics and long computation time hinder the adoption of computer aided engineering models in the design of large-format battery cells and systems. A modular, efficient battery simulation model—the multiscale multidomain (MSMD) model—was previously introduced to aid the scale-up of Li-ion material & electrode designs to complete cell and pack designs, capturing electrochemical interplay with 3-D electronic current pathways and thermal response. This paper enhances the computational efficiency of the MSMD model using a separation of time-scales principle to decompose model field variables. The decomposition provides a quasi-explicit linkage between the multiple length-scale domains and thus reduces time-consuming nested iteration when solving model equations across multiple domains. In addition to particle-, electrode- and cell-length scales treated in the previous work, the present formulation extends to bus bar- and multi-cell module-length scales. Example simulations are provided for several variants of GH electrode-domain models.

Original languageAmerican English
Pages (from-to)A1076-A1088
JournalJournal of the Electrochemical Society
Volume164
Issue number6
DOIs
StatePublished - 2017

Bibliographical note

Publisher Copyright:
© The Author(s) 2017. Published by ECS.

NREL Publication Number

  • NREL/JA-5400-67202

Keywords

  • 3D
  • battery
  • lithium-ion battery
  • model
  • multi-scale
  • simulation
  • transport

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