Heat generation and thermal runaway mechanisms induced by overcharging of aged lithium-ion battery

Liu, Jialong; Wang, Zhirong; Bai, Jinlong; Gao, Tianfeng; Mei, Ning

doi:10.1016/j.applthermaleng.2022.118565

Cited by 57 publications

(16 citation statements)

References 36 publications

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“…3, referring to t U drop , indicating the decomposition of the separator and collapse of the battery. [13][14][15][16][17][18] The time span from t 0 to the beginning of the voltage drop t U drop is denoted as Dt U drop .…”

Section: Initiation and Conditions Of Cells/modules During Trmentioning

confidence: 99%

“…[10][11][12] The sequence of events leading to the occurrence of TR has been described in the literature. [13][14][15][16][17][18] TR in batteries can result in the release of a large amount of heat [19][20][21] and gas, which can be toxic and ammable based on its composition. 22,23 In the nal stage of TR, the battery may even produce ames and explode.…”

Section: Introductionmentioning

confidence: 99%

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Harmful effects of lithium-ion battery thermal runaway: scale-up tests from cell to second-life modules

Tschirschwitz,

Bernardy,

Wagner

et al. 2023

RSC Adv.

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Section: Initiation and Conditions Of Cells/modules During Trmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Harmful effects of lithium-ion battery thermal runaway: scale-up tests from cell to second-life modules

Tschirschwitz,

Bernardy,

Wagner

et al. 2023

RSC Adv.

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show abstract

“…To enhance safety, the article recommends controlling lithium charged plates, reducing heat generation, and lowering electrolyte levels to avoid increasing internal resistance at high state of charge 5 . Researchers have demonstrated that a significant and rapid increase in temperature during thermal runaway can lead to battery failure 6 . The authors investigate the dynamic overcharging behavior of lithium‐ion batteries equipped with a cut‐off signal for emergency use and a fire protection circuit integrated into the Battery Management System.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of thermo‐physical properties of different nanofluids for effective heat transfer leading to Li‐ion battery pack cooling

Thorat,

Sanap,

Gawade

2024

Energy Storage

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The rapid advancement in Lithium‐ion battery technology has significantly boosted the electric vehicle market worldwide. These batteries are highly sought after by automobile manufacturers and researchers due to their exceptional energy storage and power capabilities. However, efficient working temperatures ranges from 15°C to 35°C, making it essential to implement battery cooling and heating methods to maintain optimal performance. This study primarily focuses on battery cooling. The automotive manufactures have focused on ethylene glycol, water and synthetic oils as commonly used coolants for keeping the lithium‐ion battery pack within working temperature limits. However, these fluids have lower heat conduction, leading to reduced heat transfer rates and diminished cooling performance. To address this issue, nano‐enhanced fluids, which are engineered fluids containing suspended nanospheres, have been explored. The heat transfer properties of conventional coolants are increased using nano‐enhanced fluids, thereby improving heat conduction and promoting efficient heat transfer within the battery. The study compares the temperature‐related characteristic of different nano‐enhanced fluids, including oxides of copper (CuO), titanium (TiO2), aluminum (Al2O3), silicon (SiO2), and zinc (ZnO), when added to base fluids such as synthetic oils, water and ethylene glycol. The importance to capacity of specific heat, conductivity of fluid thermally, fluid resistance to flow and fluid volumetric mass which are affected by changes in temperature limits are stressed upon. Depending on the specific application and test conditions, the effectiveness of one nano‐enhanced fluid may outperform the others. In conclusion, the thermo physical properties of nanofluids play a critical role in maintaining the battery pack temperature within operating temperature limits. The selections of nanofluids for particular battery thermal management system depends upon its arrangement along the battery pack and cell geometry. The cooling performance using nanofluids as coolant is 10% to 15% higher than the conventional used fluids. This nano‐enhanced fluid show great promise in enhancing the cooling capabilities of battery cooling systems, contributing to improved Lithium‐ion battery performance in electric vehicles.

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“…Different abuse conditions including thermal abuse, electronic abuse, and mechanical abuse can trigger a series of strong exothermic reactions, resulting in the generation of the terrible heat and the thermal safety risks of battery. [6][7][8][9] Therefore, it is extremely important to finger out the key exothermic reactions inside the high-energy LMBs for mitigating the thermal safety risks. There are several exothermic reactions involved in the thermal safety risks of LMBs: (1) The solid electrolyte interphase (SEI) strongly decomposes at high temperature, becoming one of the undesirable heat sources.…”

Section: Introductionmentioning

confidence: 99%

Thermoresponsive Electrolytes for Safe Lithium‐Metal Batteries

et al. 2023

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Exploring advanced strategies in alleviating the thermal runaway of lithium‐metal batteries (LMBs) is critically essential. Herein, a novel electrolyte system with thermoresponsive characteristics is designed to largely enhance the thermal safety of 1.0 Ah LMBs. Specifically, vinyl carbonate (VC) with azodiisobutyronitrile is introduced as a thermoresponsive solvent to boost the thermal stability of both the solid electrolyte interphase (SEI) and electrolyte. First, abundant poly(VC) is formed in SEI with thermoresponsive electrolyte, which is more thermally stable against lithium hexafluorophosphate compared to the inorganic components widely acquired in routine electrolyte. This increases the critical temperature for thermal safety (the beginning temperature of obvious self‐heating) from 71.5 to 137.4 °C. The remained VC solvents can be polymerized into poly(VC) as the battery temperature abnormally increases. The poly(VC) can not only afford as a barrier to prevent the direct contact between electrodes, but also immobilize the free liquid solvents, thereby reducing the exothermic reactions between electrodes and electrolytes. Consequently, the internal‐short‐circuit temperature and “ignition point” temperature (the starting temperature of thermal runaway) of LMBs are largely increased from 126.3 and 100.3 °C to 176.5 and 203.6 °C. This work provides novel insights for pursuing thermally stable LMBs with the addition of various thermoresponsive solvents in commercial electrolytes.

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Heat generation and thermal runaway mechanisms induced by overcharging of aged lithium-ion battery

Cited by 57 publications

References 36 publications

Harmful effects of lithium-ion battery thermal runaway: scale-up tests from cell to second-life modules

Harmful effects of lithium-ion battery thermal runaway: scale-up tests from cell to second-life modules

A comparative study of thermo‐physical properties of different nanofluids for effective heat transfer leading to Li‐ion battery pack cooling

Thermoresponsive Electrolytes for Safe Lithium‐Metal Batteries

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