The experimental and numerical investigation on a hybrid battery thermal management system based on forced-air convection and internal finned structure

Qin, Peng; Liao, Mengran; Mei, Wenxi; Sun, Jinhua; Wang, Qingsong

doi:10.1016/j.applthermaleng.2021.117212

Cited by 36 publications

(11 citation statements)

References 36 publications

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“…The simplest methods are air cooling systems, in forced or natural convection. In these cases, also a heat sinks/pin-fins are usually adopted to enhance the heat transfer [8,9]. However, for EVs applications, liquid cooling methods are more effective because of their high thermal capacity.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of a Direct Immersion Liquid Cooling of a Li-Ion Battery for Electric Vehicles Applications

Giammichele¹,

D’Alessandro²,

Falone³

et al. 2022

IJHT

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The aim of this work is to test a battery thermal management system by direct immersion of a commercial 18650 LiFePO4 cell in a low boiling dielectric liquid. It is worth noting that for electric mobility applications, thermal management of Lithium-Ion batteries is a fundamental issue because batteries experience high discharge currents and temperatures. First, we present an electrical characterization of the Lithium-Ion by measuring cell potential, open circuit potential and entropic heat coefficient. Temperature measurements were carried out with thermocouples and infrared thermography. A simplified heat generation term was evaluated using the experimental data. Then, the same battery was immersed in a dielectric low boiling liquid and tested under three different discharge currents. For comparison, also the case without dielectric liquid was analyzed. This paper demonstrates the feasibility of a thermal management system based on direct immersion of a battery cell in a low boiling dielectric fluid. Indeed, the results show a substantial decrease of battery temperature when immersed.

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Section: Introductionmentioning

confidence: 99%

Experimental Study of a Direct Immersion Liquid Cooling of a Li-Ion Battery for Electric Vehicles Applications

Giammichele¹,

D’Alessandro²,

Falone³

et al. 2022

IJHT

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“…Air cooling systems are most commonly adopted due to their simplicity, both in natural and forced convection. They are usually combined with heat sinks, pin-fins or other system to enhance the heat transfer [5,6]. However, these systems are insufficient to properly cooling the batteries especially in high power applications.…”

Section: Introductionmentioning

confidence: 99%

Preliminary analysis of a novel battery thermal management system based on a low boiling dielectric fluid

Giammichele

D’Alessandro²,

Falone³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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In this paper a novel battery thermal management system was experimentally studied. The batteries are submerged in a low boiling dielectric fluid with the aim to reduce the batteries surface temperature when subjected to high charge or discharge currents. The fluid change of phase allows to create a thermal buffer in case of instantaneous peak of absorbed current. This innovative system was studied on a battery pack composed of 3 cells in series and 3 cells in parallel connection for several discharge currents. For the sake of comparison, two battery packs of same dimensions were investigated: one submerged in the dielectric fluid and the second without the fluid. The cells potential and surface temperature were measured during discharges. Moreover, also the fluid temperature was evaluated in the external region. The results show a significant improvement of the thermal management since the increase of temperature is very restricted. This effect is even more evident when the fluid reaches the boiling point.

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“…For improving PCM, cooling performance does not only uses aluminum fin structure and PCM mixtures. In Reference 28, to improve the cooling performance of the system, forced‐air convection and internal fins are used. The results show that the proposed method has sufficient cooling performance 28 …”

Section: Introductionmentioning

confidence: 99%

“…In Reference 28, to improve the cooling performance of the system, forced‐air convection and internal fins are used. The results show that the proposed method has sufficient cooling performance 28 …”

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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The experimental and numerical investigation on a hybrid battery thermal management system based on forced-air convection and internal finned structure

Cited by 36 publications

References 36 publications

Experimental Study of a Direct Immersion Liquid Cooling of a Li-Ion Battery for Electric Vehicles Applications

Experimental Study of a Direct Immersion Liquid Cooling of a Li-Ion Battery for Electric Vehicles Applications

Preliminary analysis of a novel battery thermal management system based on a low boiling dielectric fluid

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

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