Evaluation of the degree of internal short circuit in lithium-ion batteries based on a single-particle electrochemical model under various abuse scenarios
Energy Storage Test\: Methods and Evaluation|更新时间:2026-05-28
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Evaluation of the degree of internal short circuit in lithium-ion batteries based on a single-particle electrochemical model under various abuse scenarios
Energy Storage Science and TechnologyVol. 15, Issue 2, Pages: 637-646(2026)
JIAO Jianfang, LIU Lianqi, YAO Yu, et al. Evaluation of the degree of internal short circuit in lithium-ion batteries based on a single-particle electrochemical model under various abuse scenarios[J]. Energy Storage Science and Technology, 2026, 15(2): 637-646.
JIAO Jianfang, LIU Lianqi, YAO Yu, et al. Evaluation of the degree of internal short circuit in lithium-ion batteries based on a single-particle electrochemical model under various abuse scenarios[J]. Energy Storage Science and Technology, 2026, 15(2): 637-646.DOI: 10.19799/j.cnki.2095-4239.2025.0910.
Evaluation of the degree of internal short circuit in lithium-ion batteries based on a single-particle electrochemical model under various abuse scenarios
The internal state of lithium-ion batteries (LIBs) can be indirectly estimated by identifying their electrochemical model parameters
thereby providing a basis for battery status monitoring and safety management. To systematically reveal the influence of different abuse conditions on the internal state of LIBs
this study proposes a parameter identification–based method for determining degradation mechanisms. Using a Panasonic NCR 18650BD ternary LIB as the study object
a reference parameter set for a normal cell was first established by identifying the electrochemical parameters of healthy batteries based on standard test data. Subsequently
three groups of LIB samples were subjected to three typical abuse tests: over-charge
over-discharge
and thermal abuse. The key electrochemical parameters were re-identified using the experimental data to track changes after damage. This study reveals distinct parameter variations corresponding to different abuse-induced degradation modes and their associated microscopic failure mechanisms through in-depth analysis. Although various abuse conditions typically manifest in coupled rather than isolated forms
our findings demonstrate that over-discharge primarily leads to cathode active site loss
thermal abuse predominantly causes interfacial reactions and lithium-ion transport kinetics deterioration
whereas over-charge simultaneously involves lithium inventory loss and active material degradation. This study systematically establishes quantitative correlations between abuse conditions and parameter evolution
providing theoretical and experimental foundations for precise state monitoring
safety warning
and optimized lifetime management strategies of LIBs.
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