Safety issues caused by internal short circuits in lithium-ion batteries

Liu, Binghe; Jia, Yikai; Li, Juan; Yin, Sha; Yuan, Chunhao; Hu, Zihan; Wang, Lubing; Li, Yangxing; Xu, Jun

doi:10.1039/c8ta08997c

Cited by 228 publications

(116 citation statements)

References 26 publications

Supporting

Mentioning

112

Contrasting

Order By: Relevance

“…Then, the voltage sharply decreases to 0 V. Therefore, the mechanical behavior of battery is related to its short circuit. This phenomenon is consistent with that of the published literature …”

Section: Quasi‐static and Dynamic Experiments Of Plibssupporting

confidence: 94%

“…This phenomenon is consistent with that of the published literature. 33 The curves of load-displacement and voltagedisplacement in the in-plane compression (length direction) are shown in Figure 7. When the displacement is from 0 to 6.25 mm, the load rises rapidly from 0 to 11.3 kN.…”

Section: Typical Results In Quasi-static Conditionsmentioning

confidence: 99%

“…The stiffness of the batteries is changed with SOC as reported in reference. 33 Analysis of the experimental data indicates that the stiffening mechanism is related to SOC and indentation displacement, which can be expressed as…”

Section: Model Validationmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic behavior and modeling of prismatic lithium‐ion battery

et al. 2020

View full text Add to dashboard Cite

Summary The inevitable vehicle collision has made the safety of lithium‐ion battery (LIB) carried by electric vehicles (EVs) a problem that restricts the further and large‐scale promotion of EVs. Therefore, establishing the numerical mechanics model of LIBs and studying their mechanical integrity are imperative. In this study, we design indentation, compression, and drop‐weight experiments for prismatic LIBs (PLIBs). Mechanical integrity and internal short circuit are analyzed in consideration of state of charge (SOC) and dynamic effects. A homogeneous PLIB model that considers anisotropic property, SOC, and dynamic effects is developed for the first time for application in different loading conditions. After its effectiveness is validated, the affecting parameters (ie, SOC and impact velocity) of the mechanical behaviors during dynamic loadings are investigated using the established model. The results show that strain rate effect and SOC state have impact on the mechanical properties of PLIB. However, the strain rate effect has much larger influence than the SOC state. Results may shed lights on the safety design of PLIBs in a mechanical aspect.

show abstract

Section: Quasi‐static and Dynamic Experiments Of Plibssupporting

confidence: 94%

Section: Typical Results In Quasi-static Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic behavior and modeling of prismatic lithium‐ion battery

et al. 2020

View full text Add to dashboard Cite

show abstract

“…However, due to the poor thermal stability of materials in LIBs, serious hazards may be induced when LIBs are under unexpected abuse conditions such as extrusion, penetration, overheat, and overcharge . Thermal runaway caused by the above abuse conditions can be attributed to a series of side reaction heat generation inside the battery.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5] However, due to the poor thermal stability of materials in LIBs, serious hazards may be induced when LIBs are under unexpected abuse conditions such as extrusion, penetration, overheat, and overcharge. [6][7][8][9][10] Thermal runaway caused by the above abuse conditions can be attributed to a series of side reaction heat generation inside the battery. The internal heat of the battery continues to accumulate when the heat generation rate is much higher than the heat dissipation rate, eventually causing uncontrollable chemical reactions of battery.…”

Section: Introductionmentioning

confidence: 99%

Thermal safety study of Li‐ion batteries under limited overcharge abuse based on coupled electrochemical‐thermal model

et al. 2020

View full text Add to dashboard Cite

Summary Many fire accidents of electric vehicles were reported that happened during the charging process. In order to investigate the reasons that lead to this problem, this paper studies the thermal safety of Li‐ion batteries under limited overcharge abuse. A 3D electrochemical‐thermal coupled model is developed for modeling thermal and electrochemical characteristics from normal charge to early overcharge state. This model is validated by experiment at charge rates of 0.5C, 1C, and 2C. The simulation results indicate that irreversible heat contributes most to temperature rise during the normal charge process, but the heat induced by Mn dissolution and Li deposition gradually dominates heat generation in the early overcharge period. Based on this, a threshold selection method for multistage warning of batteries overcharge is proposed. Among them, level 1 should be considered as a critical stage during the early overcharge process due to the deposited lithium starts to react with electrolyte at the end of level 1, where temperature rate increases to 0.5°C min−1 for 1C charge. While the thresholds of levels depend on charge rate and composition of battery. Furthermore, several critical parameters are analyzed to figure out their effects on thermal safety. It is found that the temperature at the end of overcharge is significantly influenced by the change of positive electrode thickness and solid electrolyte interface (SEI) film resistance. The final temperature increases by 17.5°C and 7.9°C, respectively, with positive electrode thickness ranging from 50 to 80 μm and SEI film resistance increasing from 0.002 to 0.03 Ω.

show abstract

Understanding of Stress‐Driven Internal Short Circuit Mechanisms in Lithium‐Ion Batteries with High SOCs

Duan

Jia

et al. 2023

Advanced Science

Self Cite

View full text Add to dashboard Cite

The characteristics of internal short circuits (ISC) play a critical role in determining the thermal runaway behaviors and associated hazards of lithium‐ion batteries (LIBs). However, due to safety concerns and limitations in operando characterization at high state‐of‐charges (SoCs), the fundamental understanding of stress‐driven ISCs under high SOC situations (above 30%) is still lacking. In this study, combined post‐mortem characterization and multiphysics modeling is employed to clarify the evolution of ISC modes in LIBs with high SOCs. These findings reveal that the triggered ISC mode is SOC‐dependent, with the Al current collector (Al)‐Anode coating (An) mode dominant in high SOC situations. Experimentally obtained ISC resistance for the specified ISC mode is then assigned to the corresponding ISC region in the established multiphysics model, allowing for accurate coupling of the electromechanical relationship and prediction of mechanical‐electrical‐thermal responses of the LIB. Finally, a simple yet effective approach is proposed for avoiding the Al‐An mode after battery fractures, achieved through surface notches on electrodes. Results discover novel phenomena for ISC in high SOC cells and reveal the underlying mechanisms, highlighting the importance and potential of battery structural design for developing next‐generation robust batteries.

show abstract

Safety issues caused by internal short circuits in lithium-ion batteries

Abstract: Outlines of the multiphysics behaviors upon penetration and the comparisons of experiment and simulation.

Cited by 228 publications

References 26 publications

Dynamic behavior and modeling of prismatic lithium‐ion battery

Dynamic behavior and modeling of prismatic lithium‐ion battery

Thermal safety study of Li‐ion batteries under limited overcharge abuse based on coupled electrochemical‐thermal model

Understanding of Stress‐Driven Internal Short Circuit Mechanisms in Lithium‐Ion Batteries with High SOCs

Contact Info

Product

Resources

About