Thermal Management of Densely-packed EV Battery with Forced Air Cooling Strategies

Zhao, Lu; Meng, Xiangzhao; Wei, Lichuan; Hu, Wengui; Zhang, L.Y.; Jin, Liwen

doi:10.1016/j.egypro.2016.06.098

Cited by 95 publications

(29 citation statements)

References 12 publications

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“…However, the above research on the heat dissipation performance of the battery pack only considers several factors that may affect it. Then the structural optimization and control optimization of the battery pack air‐cooled system are performed, but the theoretical basis behind it is not considered . At the same time, basically, few people have analyzed the essential reason of battery pack heat dissipation from the perspective of the internal flow field and the external flow field of the battery pack .…”

Section: Introductionmentioning

confidence: 99%

Research on heat dissipation performance and flow characteristics of air-cooled battery pack

Sun

et al. 2018

Int J Energy Res

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Summary With the depletion of fossil fuels and the aggravation of environmental pollution, the research and development speed of electric vehicles has been accelerating, and the thermal management of battery pack has become increasingly important. This paper selects the electric vehicle battery pack with natural air cooling as the study subject, conducts simulation analysis of the heat dissipation performance of battery packs with and without vents. Then this paper researches on the influence of internal flow field and external flow field. Field synergy principle is used to analyze the effect of velocity field and temperature field amplitude. The results show the following: it is found that the maximum temperature rise and the internal maximum temperature difference of the battery pack with vents are reduced by about 23.1% and 19.9%, raising speed value can improve the heat dissipation performance, and raising temperature value can decrease the heat dissipation performance. Reasonable design of the vents can make the inner and outer flow field work synergistically to achieve the best cooling effect. Then the reference basis for the air cooling heat dissipation performance analysis of electric vehicle, battery pack structure arrangement, and air‐inlet and air‐outlet pattern choosing are offered.

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Section: Introductionmentioning

confidence: 99%

Research on heat dissipation performance and flow characteristics of air-cooled battery pack

Sun

et al. 2018

Int J Energy Res

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“…The forced air cooling study performed by Wang et al 25 also concludes the fact that this particular technique helps in reducing the effective temperature and also concludes that the cooling was dependent on certain parameters such as air velocity and cell spacing. Moreover, a similar study by Lu et al 26 also encourages the fact that forced air cooling yields better cooling. Whereas, Yang et al 27 suggests that the transverse fashion for cooling yields better results and even required less power consumption.…”

Section: Introductionmentioning

confidence: 75%

Study on effect of diverse air inlet arrangement on thermal management of cylindrical lithium‐ion cells

et al. 2020

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Lithium-ion cells are preferred in the electrical powertrain due to high-power density, compactness, and modularity. In real driving conditions, the cells undergo discharge rates as high as 4 C resulting in high heat generation affecting the performance. To obtain the maximum performance the pack construction and thermal management of cells are crucial parameters. In our work, air-cooled technique with diverse air inlet and staggered scheme with a two-channel partition approach for thermal management of the cylindrical lithium-ion cells are studied in computational fluid dynamics. The simulation model is validated with experimental results. The obtained results demonstrate that the cells in the dual-directional air inlet arrangement had low maximum temperature difference among and within the cells and required least fan work. This arrangement required least fan work to generate optimal air inlet velocity of 2 m/s for 1, 2, and 3 C and 4 m/s for 4 C discharge rates. There is a reduction of 50% and 33% fan work for 3 and 4 C discharge rates, which are the majority operating points. Also, it shows that the temperature uniformity within the cells has improved.

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“…Lu et al [38] worked on BTMS of thickly pressed EV batteries with forced-air cooling systems to investigate the air cooling capacity on the temperature consistency and hotspots alleviation of a smaller battery pack subject to different airflow rates as well as airflow paths. The authors used 252 cylindrical lithium-ion batteries (32650).…”

Section: State Of the Artmentioning

confidence: 99%

High Reynold’s Number Turbulent Model for Micro-Channel Cold Plate Using Reverse Engineering Approach for Water-Cooled Battery in Electric Vehicles

et al. 2020

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The investigation and improvement of the cooling process of lithium-ion batteries (LIBs) used in battery electric vehicles (BEVs) and hybrid electric vehicles (HEVs) are required in order to achieve better performance and longer lifespan. In this manuscript, the temperature and velocity profiles of cooling plates used to cool down the large prismatic Graphite/LiFePO4 battery are presented using both laboratory testing and modeling techniques. Computed tomography (CT) scanning was utilized for the cooling plate, Detroit Engineering Products (DEP) MeshWorks 8.0 was used for meshing of the cooling plate, and STAR CCM+ was used for simulation. The numerical investigation was conducted for higher C-rates of 3C and 4C with different ambient temperatures. For the experimental work, three heat flux sensors were attached to the battery surface. Water was used as a coolant inside the cooling plate to cool down the battery. The mass flow rate at each channel was 0.000277677 kg/s. The k-ε model was then utilized to simulate the turbulent behaviour of the fluid in the cooling plate, and the thermal behaviour under constant current (CC) discharge was studied and validated with the experimental data. This study provides insight into thermal and flow characteristics of the coolant inside a cooing plate, which can be used for designing more efficient cooling plates.

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Thermal Management of Densely-packed EV Battery with Forced Air Cooling Strategies

Cited by 95 publications

References 12 publications

Research on heat dissipation performance and flow characteristics of air-cooled battery pack

Research on heat dissipation performance and flow characteristics of air-cooled battery pack

Study on effect of diverse air inlet arrangement on thermal management of cylindrical lithium‐ion cells

High Reynold’s Number Turbulent Model for Micro-Channel Cold Plate Using Reverse Engineering Approach for Water-Cooled Battery in Electric Vehicles

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