Application of RAC Method in Fire Risk Assessment of Lithium-ion Battery Factories

Niu, Huichang; Zhao, Li

doi:10.1016/j.proeng.2017.12.117

Cited by 8 publications

(7 citation statements)

References 2 publications

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“…The lithium‐ion battery is widely used in electrical vehicle (EV) and energy storage because of its good performance in cycle life, specific energy, and theoretical capacity. However, thermal safety issues have attracted more and more attention 1,2 . Internal short circuit (ISC) can cause thermal runaway and even lead to catastrophic.…”

Section: Introductionmentioning

confidence: 99%

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Risk evaluation of internal short circuit for lithium‐ion battery based on an active protection method

Chen

Song

Lin

et al. 2022

Intl J of Energy Research

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Internal short circuit (ISC) can lead to thermal runaway and even cause fire. But the traditional passive methods cannot prevent the ISC before it occurs. The active protection method is proposed based on the evaluation of the ISC risk. An evaluation model is built based on the electrochemical model and solved with the Monte-Carlo method. Then, the model is verified with experimental data. The simulation result agrees with the experimental data of accelerated cycle life. Next, the effect of different factors on the probability of ISC risk is studied. It is found that (a) the variation trend of the probability of ISC risk with cycle number is nonlinear. The critical cycle number exists in the long-time use of the battery. (b) The probability increment of ISC risk becomes apparent when the charge rate reaches a critical value. (c) Battery temperature plays a great role in the critical cycle number. A lower temperature reduces the critical cycle number. (d) Effect of factors on the probability of ISC risk is listed as follows: charge rate > cycle number > battery temperature. With the help of the active protection method, ISC risk can be predicted before ISC occurs.

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Section: Introductionmentioning

confidence: 99%

“…However, thermal safety issues have attracted more and more attention. 1,2 Internal short circuit (ISC) can cause thermal runaway and even lead to catastrophic. In the ISC case, a large current passes through the internal short spot and generates excessive heat in a short time.…”

Section: Introductionmentioning

confidence: 99%

Risk evaluation of internal short circuit for lithium‐ion battery based on an active protection method

Chen

Song

Lin

et al. 2022

Intl J of Energy Research

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“…The safety of lithium‐ion battery attracts increasing attentions nowadays as more and more batteries are used in our life. Moreover, fire accidents caused by battery in hybrid electric vehicles (HEVs) or electric vehicles (EVs) provoke public concern 1‐4 . Excessive heat generation and gas generation are the direct cause of thermal runaway of lithium‐ion battery.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, fire accidents caused by battery in hybrid electric vehicles (HEVs) or electric vehicles (EVs) provoke public concern. [1][2][3][4] Excessive heat generation and gas generation are the direct cause of thermal runaway of lithium-ion battery. When heat generation rate is bigger than heat dissipation rate, temperature increases.…”

Section: Introductionmentioning

confidence: 99%

Electrical and thermal interplay in lithium‐ion battery internal short circuit and safety protection

et al. 2020

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Summary The safety of lithium‐ion battery provokes public concern with its wide application. Considering the electrical and thermal interplay between different parts or layers, a multilayer electro‐thermal model is developed to investigate the performance in internal short‐circuit (ISC) case before the trigger of thermal runaway. The battery internal short circuit is assumed to occur under natural convection condition and the initial temperature is 25°C. In comparison, the simulation result agrees with the experimental data. It is found that the short‐circuit performance is quite sensitive to the number of layer and short‐circuit location. The current almost triples when the number of layer increases from 2 to 32. Moreover, weakening the electrical and thermal interplay between different layers can make the battery more secure in Al‐anode ISC case. It is proposed that adding extra resistance on two adjacent metal tabs or changing tabs’ position can improve the safety. Novelty Statement Electrical and thermal interplay between different layers is considered. Adding extra resistance between different unit layers protects battery from ISC. Weakening the electrical and thermal interplay between layers is recommended.

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“…Unfortunately, the batteries were reported to explore or catch fire time and again, for example, a lithium‐ion battery factory of Dongguan city broke out of fire, which caused 5 death and 6 injuries in 2014 . Wu Zhou Dragon electrical vehicles (EV) bus caught fire during charging in a carport for the battery management system lost control of stop charging; the battery pack was over charged until thermal runaway and fire in Shenzhen, China in April 2015 .…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of thermal management system for lithium ion batteries module with coupling effect by heat sheets and phase change materials

Zhang

et al. 2018

Int J Energy Res

115

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Summary Some potential safety risks for lithium ion battery such as overheating, combustion, and explosion occurred in practical application may cause accidents of electric vehicles. Phase change material (PCM)‐based thermal management system was demonstrated as a feasible approach. However, the batteries have to endure various environment and climate, which would not work normally under cold area. Especially when the surrounding temperature falls to below 10°C, which can bring about the energy and power of Li‐ion batteries rapidly reducing. In this study, a coupling heating strategy of the PCM‐based batteries module with 2 heat sheets at low temperature was proposed for batteries module and cannot only balance the temperature among different batteries in the module but also ensure to pre‐heat the batteries module at low temperature. The experiment displayed that 7% of EG in paraffin‐based composite PCMs was the best proportion for batteries module, considering both fluidity and thermal conductivity factors. In addition, the temperature difference of PCM‐based batteries module was 2.82°C, while that of the air‐based one was 14.49°C, which was 5 times more than former, exhibiting an excellent performance in balancing temperature uniformly, and was beneficial for prolonging the lifespan of batteries. The coupling heating strategy‐based PCM with heat sheets provided as an extremely promising technology for lithium batteries module at low temperature.

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Application of RAC Method in Fire Risk Assessment of Lithium-ion Battery Factories

Cited by 8 publications

References 2 publications

Risk evaluation of internal short circuit for lithium‐ion battery based on an active protection method

Risk evaluation of internal short circuit for lithium‐ion battery based on an active protection method

Electrical and thermal interplay in lithium‐ion battery internal short circuit and safety protection

Experimental investigation of thermal management system for lithium ion batteries module with coupling effect by heat sheets and phase change materials

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