Non-destructive visualization of short circuits in lithium-ion batteries by magnetic field imaging system

Shogo Suzuki; Hideaki Okada; Kai Yabumoto; Seiju Matsuda; Yuki Mima; Noriaki Kimura; Kenjiro Kimura

doi:10.35848/1347-4065/abf4a1

Non-destructive visualization of short circuits in lithium-ion batteries by magnetic field imaging system

Chemical Physics 2021-05-26 v1 Applied Physics

Authors: Shogo Suzuki , Hideaki Okada , Kai Yabumoto , Seiju Matsuda , Yuki Mima , Noriaki Kimura , Kenjiro Kimura

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

To develop a high-density and long-life lithium-ion battery, a technology is needed that allows non-destructive visualization of the spatial distribution of deteriorated parts after cycle test. In the present study, we measured the distribution of the magnetic field leaking from the lithium-ion battery during its operation. Based on the measurement results, we evaluated the current density distribution inside a battery using the electric current reconstruction process. With respect to the changes in an internal state of the lithium-ion battery associated with cycle deterioration, we successfully visualized the spatial changes in the conductivity distribution inside the lithium-ion battery.

Keywords

lithium-ion battery magnetic field imaging non-destructive visualization short circuit current density distribution conductivity distribution

Cite

@article{arxiv.2010.04489,
  title  = {Non-destructive visualization of short circuits in lithium-ion batteries by magnetic field imaging system},
  author = {Shogo Suzuki and Hideaki Okada and Kai Yabumoto and Seiju Matsuda and Yuki Mima and Noriaki Kimura and Kenjiro Kimura},
  journal= {arXiv preprint arXiv:2010.04489},
  year   = {2021}
}

Comments

11 pages, 5 figures, letter

Non-destructive visualization of short circuits in lithium-ion batteries by magnetic field imaging system

Abstract

Keywords

Cite

Comments

Related papers