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Gas Leakage Source Detection for Li-Ion Batteries by Distributed Sensor Array.

Valentin Mateev1, Iliana Marinova2, Zhelyazko Kartunov3

  • 1Department of Electrical Apparatus, Technical University of Sofia, Sofia 1797, Bulgaria. vmateev@tu-sofia.bg.

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Summary

This study introduces a novel gas detection system using carbon monoxide (CO) sensors to pinpoint the source of gas leaks in lithium-based batteries. This early warning system enhances battery safety by enabling precise localization of malfunctions.

Keywords:
CO gas sensorsLi-Ion batteriescatalytic gas sensorsimpedance gas sensorsleakage source reconstructionreconstruction algorithm

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Electrical Engineering

Background:

  • Lithium-based batteries pose safety risks including fire and explosion.
  • Gas leakage is a critical early indicator of battery malfunction.
  • Accurate localization of gas emission sources is challenging under operational conditions.

Purpose of the Study:

  • To propose a gas detection system for precise gas emission source localization within battery packs.
  • To develop a numerical reconstruction method for identifying malfunctioning cells.
  • To optimize sensor array configurations for efficiency and accuracy.

Main Methods:

  • Utilized a distributed array of catalytic carbon monoxide (CO) sensors.
  • Developed a numerical reconstruction algorithm based on a fast interpolation technique.
  • Employed computational modeling of gas diffusion for accuracy estimation.

Main Results:

  • Proposed sensor array configurations reduce the number of sensing nodes.
  • The system simplifies data acquisition processes.
  • The reconstruction algorithm is suitable for real-time data processing.

Conclusions:

  • The developed gas detection system and reconstruction method enable precise localization of gas emission sources in battery packs.
  • The approach enhances early detection of battery malfunctions, improving safety.
  • Optimized sensor configurations offer efficient and accurate monitoring solutions.