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Summary & Details

Demonstrating Nondestructive Safety Diagnosis for Lithium-Ion Battery Modules Based on Charging Curve Analysis Data

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Publication code: 20254642

Paper/Info type: International Journal of Automotive Engineering

Vol.16 No.4

Pages: 81-87(Total 7 p)

Date of publication: Oct 2025

Publisher: JSAE

Language: English

Detailed Information

Category(E)	Research paper
Author(E)	1) Kenichiroh Koshika, 2) Hideki Tsuruga, 3) Tomokazu Morita, 4) Keizoh Honda
Affiliation(E)	1) National Traffic Safety and Environment Laboratory, 2) Japan Electrical Safety & Environment Technology Laboratory, 3) Toshiba, 4) Japan Electrical Safety & Environment Technology Laboratory
Abstract(E)	A nondestructive safety diagnosis for lithium-ion battery modules was demonstrated with experimental data. The charging curve analysis (CCA) was selected for estimating the internal state of a lithium-ion battery cell and the cell operating conditions in a module. The safety threshold set by using CCA data was validated by thermal runaway tests for battery cells using an external heating method. The diagnosis for the module revealed not only its safety but also its discharge capacity (state of health (SOH)). An output image with comprehensive information including indicators to accumulate remaining battery performance values was successfully displayed.

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