Research on thermal runaway characteristics of NCM lithium-ion battery under thermal-electrical coupling abuse

Xi, Xiaoming; Sun, Xudong; Zhao, Lijin; Li, Renzheng; Tang, Wu‐Neng

doi:10.1007/s11581-022-04730-0

Cited by 10 publications

(3 citation statements)

References 28 publications

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“…The generation of a thermal runaway is accompanied by an internal short circuit, which is an important mark for the thermal runaway. As for the trigger time of thermal runaways, the generation process of the internal short circuit is divided into the instantaneous trigger and accumulative trigger [7] :…”

Section: Analysis Of Thermal Runaway Mechanism and Cause Of Lithium-i...mentioning

confidence: 99%

Research on accurate fire detection & early warning model for lithium-ion battery packs

Miao

2024

J. Phys.: Conf. Ser.

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To improve the fire detection & early warning accuracy for lithium-ion battery packs and reduce false alarms and missing reports, the fire occurrence mechanism and cause factors of lithium-ion battery packs were analyzed, the calculation method of these characteristic parameters and basic judgment conditions of thermal runaway occurrence were explored, and then a thermal runaway-induced fire spread model of lithium-ion battery packs was established. Next, the scheme and model for accurate detection and early warning of lithium-ion battery pack fire was designed. Furthermore, an accurate fire detection & early warning model of “characteristic parameter sorting and screening + comprehensive conditional judgment + grading implementation” was proposed. Experimental results demonstrate that the accurate fire detection & early warning model for lithium-ion battery packs built in this study would be feasible.

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Section: Analysis Of Thermal Runaway Mechanism and Cause Of Lithium-i...mentioning

confidence: 99%

Research on accurate fire detection & early warning model for lithium-ion battery packs

Miao

2024

J. Phys.: Conf. Ser.

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“…where Q represents the heat generation rate, M denotes the mass of the battery, and C p signifies the specific heat capacity of the battery. As depicted in Equation (3), Q is further composed of the side reaction heat generation rate Q chem , the electrical energy release rate Q E , and the heat transfer rate, denoted as Φ ht [13,14,19].…”

Section: Thermal Modelmentioning

confidence: 99%

Experimental and Modeling Analysis of Thermal Runaway for LiNi0.5Mn0.3Co0.2O2/Graphite Pouch Cell Triggered by Surface Heating

Wang,

Tang,

Zhou

et al. 2024

Energies

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With the rapid advancement of battery technology, the energy density and power density of lithium-ion batteries (LIBs) as a key component of electric vehicles have been increasing. However, accidents triggered by the thermal runaway of LIBs have been occurring frequently. Therefore, to address this issue, it is imperative to investigate the TR characteristics of the battery under various conditions. This study investigates the TR characteristics of ternary pouch LIBs induced by surface heating, using techniques such as voltage and temperature acquisition, as well as video imaging. The experimental results are analyzed to elucidate the venting and combustion characteristics of the cells. Furthermore, in order to provide a more comprehensive elucidation of the TR behavior of the battery, a corresponding 3D model for surface-induced TR was constructed. The simulation results of this model are in good agreement with the experimental results and effectively capture the TR characteristics of the cells under surface heating. Finally, the simulation results showed that the cells are more prone to venting from the side due to the lower melting point of the polypropylene (PP) adhesive used for cell sealing. The use of high-temperature-resistant sealing adhesives is crucial in preventing uncontrolled lateral venting of the cells.

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“…The main electrical characteristic of the battery is the maximum storage capacity Q 0 . The physical characteristics of the battery are usually characterized by state of charge (SOC) [33][34][35][36][37]. SOC describes the battery's charge Q(t) at time t in the form of a percentage.…”

Section: Model Buildingmentioning

confidence: 99%

Research on Outdoor Mobile Music Speaker Battery Management Algorithm Based on Dynamic Redundancy

et al. 2023

Technologies

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In terms of the battery management system of a mobile music speaker, reliability optimization has always been an important topic. This paper proposes a new dynamic redundant battery management algorithm based on the existing fault-tolerant structure of a lithium battery pack. The internal configuration is adjusted according to the SOC of each battery, and the power supply battery is dynamically allocated. This paper selects four batteries to experiment on with two different algorithms. The simulation results show that compared with the traditional battery management algorithm, the dynamic redundant battery management algorithm extends the battery pack working time by 18.75%, and the energy utilization rate of B1 and B4 increases by 96.0% and 99.8%, respectively. This proves that the dynamic redundant battery management algorithm can effectively extend battery working time and improve energy utilization.

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Research on thermal runaway characteristics of NCM lithium-ion battery under thermal-electrical coupling abuse

Cited by 10 publications

References 28 publications

Research on accurate fire detection & early warning model for lithium-ion battery packs

Research on accurate fire detection & early warning model for lithium-ion battery packs

Experimental and Modeling Analysis of Thermal Runaway for LiNi0.5Mn0.3Co0.2O2/Graphite Pouch Cell Triggered by Surface Heating

Research on Outdoor Mobile Music Speaker Battery Management Algorithm Based on Dynamic Redundancy

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