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State of the art cell monitors and algorithms in battery management systems are based on static measurements of precise cell voltages and temperatures. Testing is performed based on battery models that calculate cell voltages and temperatures based e.g. on SOC, SOH, geometry and environment parameters. Electro chemical impedance spectroscopy (EIS) allows a much better characterization of battery cells. New generations of cell monitor ICs allow it to use EIS in real customer setups like vehicle batteries. For testing this, it is necessary to simulate all impedance states of batteries under all conditions. This requires a highly dynamic simulation of battery cells. In the research project ZSim (BMWI Homepage, https://www.elektronikforschung.de/projekte/zsim , last accessed 2025/03/20) supported be the German Federal Ministry of Education and Research (FKZ: 16EMO0385K) a Hardware-in-the Loop (HiL) test system for the simulation of battery cells including EIS has been developed.

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Highly Dynamic Battery Management Test System with Real-Time Electrochemical Impedance Simulation

  • 会议论文

  • 发表日期：

    2025年

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  • Franz Dengler,
  • Abduelkerim Dagli

摘要

State of the art cell monitors and algorithms in battery management systems are based on static measurements of precise cell voltages and temperatures. Testing is performed based on battery models that calculate cell voltages and temperatures based e.g. on SOC, SOH, geometry and environment parameters. Electro chemical impedance spectroscopy (EIS) allows a much better characterization of battery cells. New generations of cell monitor ICs allow it to use EIS in real customer setups like vehicle batteries. For testing this, it is necessary to simulate all impedance states of batteries under all conditions. This requires a highly dynamic simulation of battery cells. In the research project ZSim (BMWI Homepage, https://www.elektronikforschung.de/projekte/zsim , last accessed 2025/03/20) supported be the German Federal Ministry of Education and Research (FKZ: 16EMO0385K) a Hardware-in-the Loop (HiL) test system for the simulation of battery cells including EIS has been developed.