Thermal management of a simulated battery with the compound use of phase change material and fins: Experimental and numerical investigations

Sun, Zhiqiang; Fan, Ruijin; Zheng, Nianben

doi:10.1016/j.ijthermalsci.2021.106945

Cited by 81 publications

(19 citation statements)

References 63 publications

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“…The effects of the discharge rate, fin shape, fin number, and fin thickness on the temperature rise of the battery were investigated in depth, while the variation of the PCM volume fraction with time was not analyzed. Similar studies were experimentally carried out by Weng et al 32 Sun et al 33 proposed a novel fin/PCM system that combines arc and straight fins for the thermal management of batteries. They verified the simulation model through experiments and discussed the effects of the housing material, length of arc fins, and radial distance on the volume fraction of the PCMs and the battery temperature.…”

Section: Introductionmentioning

confidence: 53%

Thermal management performance improvement of phase change material for autonomous underwater vehicles' battery module by optimizing fin design based on quantitative evaluation method

Mao

Song

et al. 2022

Intl J of Energy Research

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Summary Efficient thermal management of lithium battery modules has become a thorny problem in the development of autonomous underwater vehicles (AUVs), especially under high current discharge. In this article, the fin/phase change material (PCM) composite structure was proposed for AUV's battery thermal management with consideration of natural convection. The temperature behavior of the battery and the melting behavior of PCM were investigated under different key parameters. In addition, the heat transfer mechanism of the melting process of the PCM was revealed. More importantly, the dimensionless temperature control performance (TCP) factor and the dimensionless heat storage performance (HSP) factor were introduced as new criteria to quantitatively evaluate the impact of different design parameters on the battery thermal management performance. The results showed that utilizing fins can significantly accelerate the melting of the PCM. Increasing the number of fins can reduce the temperature of the battery and improve the uniformity of the battery temperature distribution. Compared with the pure PCM, the total time required for PCM melting in the fin/PCM battery thermal management unit with different numbers of fins is reduced by at least 11.5%. The decrease of the time of complete PCM melting is not linearly correlated with the length ratio of fins. The fin number of N = 6, length ratio of R = 0.8, and angle between fins of φ = 36° were identified as the optimal parameters of fin/PCM composite structures. The TCP and HSP were enhanced by 38.1% and 4.54%, respectively. The conclusions of this work can provide reference for the accurate design of fin/PCM composite structures for the thermal management of AUV batteries. Highlights The fin/phase change material composite structure was introduced for autonomous underwater vehicles' battery thermal management. The temperature and melting behavior were investigated with natural convection. The temperature control performance factor and heat storage performance factor were proposed as new evaluation criteria. Temperature deviation index was used to measure the battery temperature uniformity. The performance was enhanced by optimizing the design parameters of fin.

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Section: Introductionmentioning

confidence: 53%

Thermal management performance improvement of phase change material for autonomous underwater vehicles' battery module by optimizing fin design based on quantitative evaluation method

Mao

Song

et al. 2022

Intl J of Energy Research

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“…The fin specifications used in the third structure are given in Figure 1D. For three structures, the battery temperature is measured from the midpoint of the battery as seen in Figure 1A, since the middle sides of the battery are the most heated sides during the charge‐discharge process 18 …”

Section: Experimental Methodologymentioning

confidence: 99%

“…Since the thermal conductivity of PCM is low, studies are carried out to increase the thermal conductivity. Battery lifetime is prolonged by about 54% to 90% by improving the PCM thermal conductivity via straight and arc‐type fins 18 . In article, 19 new fin structures consisting of cylindrical rings and longitudinal fins are proposed to improve heat transfer.…”

Section: Introductionmentioning

confidence: 99%

“…Battery lifetime is prolonged by about 54% to 90% by improving the PCM thermal conductivity via straight and arctype fins. 18 In article, 19 new fin structures consisting of cylindrical rings and longitudinal fins are proposed to improve heat transfer. This study was compared only with the battery and battery-PCM combination, and it was emphasized that the proposed fin system showed superior performance in terms of heat transfer rate.…”

Section: Introductionmentioning

confidence: 99%

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Consideration of graphene material in PCM with aluminum fin structure for improving the battery cooling performance

Aslan

Aydın

Yaşa

2022

Intl J of Energy Research

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Summary Phase change material (PCM) based battery thermal management system (BTMS) provides even heat distribution and lower maximum temperature, but it suffers from low thermal conductivity. In this study, the impact of graphene additive on PCM was analyzed by presenting three experiments with various structures to solve PCM's low thermal conductivity problem. The results demonstrate that there is no positive impact of graphene additive in the first and third structures. The PCM‐graphene additive between the second structure's fins significantly improves the battery heat transfer by allowing the battery to cool down 1500 seconds earlier than the graphene‐free structure. Moreover, a thermal equivalent circuit model was derived for the second structure because of its enhanced performance. It is shown that the model works accurately and proves its ability to control not only temperature fluctuations but also transient behavior of the battery. This model provides that the battery temperature can be analyzed without experimentation for different charge‐discharge scenarios in lithium‐ion batteries with a shorter computation time.

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“…Various designs of fins attached to the tube were also studied 32 . It was found that fins are an efficient heat transfer enhancement modification for both S‐T and tube‐in‐tank style PCMs in TESSs 32‐34 . Ismail et al 35 performed a numerical modeling investigation of the PCM solidification inside an accumulator with axial fins.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance of an accumulator unit using phase change material with a fixed volume of fins

2021

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Summary Melting rate enhancement inside an accumulator unit for a phase change material (PCM) has been numerically investigated in a shell‐and‐tube (S‐T) arrangement that incorporates the circular type of fins, considering a fixed total volume of fins. The number of fins was chosen as the design parameter. The heat transfer fluid (HTF) was chosen as water that flows through the selected accumulator unit during the process of melting. The computational fluid dynamics (CFD) technique has been utilized for the simulation of the accumulator using ANSYS FLUENT software by considering a two‐dimensional axisymmetric cylindrical accumulator in a vertical direction. During the melting process, two heat transfer mechanisms were considered, namely, conduction and convection. The HTF flow was 5 L/min with a flow temperature of 358 K for charging. The predicted complete melting time of the PCM decreased by 53.125%, 65.625%, 71.875%, and 71.875% for fins numbering 6, 18, 30, and 36, respectively, compared with the S‐T without fins where it took approximately 480 minutes to melt completely. The optimal fin parameters are recommended in this study as follows: number of fins N = 30, thickness t/d = 0.01858, interval d/L = 0.03227, and aspect ratio t/h = 0.015. These recommended values maximize the thermal performance of the selected accumulator unit. The effects of changing the flow rate of the heat transfer fluid and its inlet temperature have been found to be significant on the PCM melting rate. The total melting time of the PCM is found to be reduced by about 57% when the inlet flow temperature is increased from 343 to 358 K. Moreover, the total melting time reduces by about 70.5% with an increase in the heat transfer fluid mass flow rate from 0.15 to 5 L/min. Furthermore, increasing the HTF flow rate from 0.15 to 5 L/min leads to a reduction of about 61.1% in the predicted total time that is required for solidification. The temperature differences for low flow rates are greater than those for high flow rates. The novelty of this study is in investigating the performance at a fixed total volume of fins.

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Thermal management of a simulated battery with the compound use of phase change material and fins: Experimental and numerical investigations

Cited by 81 publications

References 63 publications

Thermal management performance improvement of phase change material for autonomous underwater vehicles' battery module by optimizing fin design based on quantitative evaluation method

Thermal management performance improvement of phase change material for autonomous underwater vehicles' battery module by optimizing fin design based on quantitative evaluation method

Consideration of graphene material in PCM with aluminum fin structure for improving the battery cooling performance

Thermal performance of an accumulator unit using phase change material with a fixed volume of fins

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