Engineering and Technology

Balancing resistor-based online electrochemical impedance spectroscopy in battery systems: opportunities and limitations

A. Blömeke, H. Zappen, et al.

This groundbreaking study examines the innovative use of existing balancing resistors in battery management systems for online electrochemical impedance spectroscopy measurements. Conducted by a team of experts including Alexander Blömeke and Hendrik Zappen, the research highlights the feasibility, potential strategies for optimization, and the challenges surrounding this novel approach.

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Abstract

This study explores the feasibility of using existing balancing resistors in battery management systems (BMS) for online electrochemical impedance spectroscopy (EIS) measurements. It investigates the potential and limitations of this approach, proposing a formula to minimize hardware requirements through signal processing techniques. A demonstrator was built to test the approach, providing insights into optimization strategies and SNR estimates. The research concludes that online EIS using balancing resistors is possible, but challenges remain regarding heat generation and voltage measurement precision.

Publisher

Communications Engineering

Published On

Apr 13, 2024

Authors

Alexander Blömeke, Hendrik Zappen, Florian Ringbeck, Fabian Frie, David Wasylowski, Dirk Uwe Sauer

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