Simulating Rechargeable Lithium-Ion Battery Using VHDL-AMS

Paper #:
  • 2012-01-0665

Published:
  • 2012-04-16
DOI:
  • 10.4271/2012-01-0665
Citation:
Hu, X., Lin, S., and Stanton, S., "Simulating Rechargeable Lithium-Ion Battery Using VHDL-AMS," SAE Technical Paper 2012-01-0665, 2012, https://doi.org/10.4271/2012-01-0665.
Affiliated:
Pages:
15
Abstract:
A commonly used physics based electrochemisty model for a lithium-ion battery cell was first proposed by professor Newman in 1993. The model consists of a tightly coupled set of partial differential equations. Due to the tight coupling between the equations and the 2d implementation due to the particle modeling, and thus called pseudo-2d in literature, numerically obtaining a solution turns out to be challenging even for a lot of commercial softwares. In this paper, the VHDL-AMS language is used to solve the set of equations. VHDL-AMS allows the user to focus on the physical modeling rather than numerically solving the governing equations. In using VHDL-AMS, the user only needs to specify the governing equations after spatial discretization. A simulation environment, which supports VHDL-AMS, can then be used to solve the governing equations and also provides both pre- and post- processing tools. Using such a process, it takes less than two days to implement the Newman model from scratch. The paper introduces the approach by solving simple non-electrochemistry models first followed by solving the full Newman electrochemistry model.
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