Thermal performance of axial air cooling system with bionic surface structure for cylindrical lithium-ion battery module

Yang, Wen; Zhou, Fei; Zhou, Haobing; Liu, Yuchen

doi:10.1016/j.ijheatmasstransfer.2020.120307

Cited by 70 publications

(16 citation statements)

References 40 publications

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“…Reynolds number (Re) [ 31 ]

R_{e} = \frac{S_{in} V_{in}}{S_{rg}} \frac{ρ D_{d}}{μ}

where

S_{in}

is the area of the air inlet,

S_{rg}

is the cross‐sectional area of the internal airflow,

V_{in}

is the average velocity of the air inlet, ρ is the density of air, μ is the viscosity of air,

D_{normald}

is the hydraulic diameter of the airflow channel.…”

Section: Numerical Analysismentioning

confidence: 99%

See 1 more Smart Citation

Thermal Performance of Reverse‐Layered Air‐Cooled Cylindrical Lithium Battery Pack Integrated with Staggered Battery Arrangement and Spoiler

Zhang

Zhu

2022

Energy Tech

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In recent years, with the influence of the current energy shortage and massive environmental pollution, the development of new energy electric vehicles has become a global focus. Lithiumion battery pack is one of the vital components of electric vehicles (EVs). Compared with other types of battery, with the advantages of high energy density, low self-discharge, and long cycle life, lithium-ion battery is extensively used in electric vehicles. [1][2][3][4] However, there is a phenomenon of heat accumulation in the process of the charge and discharge of lithium-ion batteries. The accumulated heat will have a significant impact on the performance and safety of the module of the battery pack, so it is necessary to take appropriate cooling measures. [5,6] Generally, the temperature range that lithium-ion batteries can work effectively is 10-50 C, and the maximum temperature difference of the battery module ought to be controlled within 5 C. To make the battery have a better working environment, the operating temperature of the battery pack ought to be limited between 20 and 40 C. [7,8] Consequently, to ensure it works in a suitable temperature environment, the design of a battery thermal management system is particularly important.At present, the common battery thermal management strategies include liquid cooling, [9,10] air cooling, [11,12] phase change materials (PCM) cooling, [13,14] heat pipe cooling, [15,16] hybrid cooling, [17,18] etc. Compared with other battery thermal management strategies, the air cooling system has been widely used on account of its advantages of lightweight, simple structure, and low cost. [19] However, in the existing air-cooled system, large temperature difference often occurs inside the battery pack. Therefore, for enhancing the heat dissipation performance of air-cooled battery thermal management system (BTMS) and making the temperature distribution of the battery more uniform, scholars have done depth research on the structural design, battery arrangement, adding spoiler, and airflow control.In terms of structural design, Chen et al. [20] researched the symmetrical and asymmetrical air-cooled BTMS system, it was found that the symmetrical system had better heat dissipation performance than the asymmetrical system. And with a small number of batteries in BTMS, the temperature distribution of the batteries was more uniform. Liu et al. [21] proposed a new and original battery thermal management system of J-type, which had one more outlet than the traditional U-type and Z-type BTMS. With different operating conditions, the control valve was used to adjust the opening of the two outlets, which greatly improved the controllability and flexibility of battery thermal management. In terms of battery arrangement, Zhu et al. [22] considered three typical battery arrangements in the same battery module: equal arrangement, increasing arrangement, and decreasing arrangement. Then the study found that the temperature uniformity of the battery module in decreasing

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“…Reynolds number (Re) [ 31 ]

R_{e} = \frac{S_{in} V_{in}}{S_{rg}} \frac{ρ D_{d}}{μ}

where

S_{in}

is the area of the air inlet,

S_{rg}

is the cross‐sectional area of the internal airflow,

V_{in}

is the average velocity of the air inlet, ρ is the density of air, μ is the viscosity of air,

D_{normald}

is the hydraulic diameter of the airflow channel.…”

Section: Numerical Analysismentioning

confidence: 99%

“…The hydraulic diameter ( D d ) [ 31 ]

D_{normald} = \frac{4 S_{rg}}{P}

where P is the wetted perimeter,

S_{rg}

is the cross‐sectional area of the internal airflow.…”

Section: Numerical Analysismentioning

confidence: 99%

Thermal Performance of Reverse‐Layered Air‐Cooled Cylindrical Lithium Battery Pack Integrated with Staggered Battery Arrangement and Spoiler

Zhang

Zhu

2022

Energy Tech

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“…Bioinspired surfaces with microscale or nanoscale structures have widespread applications because of their unique properties, for example, self-cleaning, , energy harvesting, − thermal management, , radiative cooling, , drag reduction, , and reversible adhesion . The droplets deposited on the lotus leaf or rose petal both exhibit a high contact angle (>150°).…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulation on the Wettability of Nanoscale Wrinkles: High Water Adhesion of Rose Petals

et al. 2022

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Understanding the high water adhesion of rose petals is of great significance in artificial surface design. With all-atom molecular dynamics simulation, the wettability of nanoscale wrinkles was explored and compared to that of nanoscale strips with favorable hydrophobicity. The dewetting and wetting of gaps between nanoscale structures represent the Cassie–Baxter (CB) and Wenzel (WZ) states of the macroscopic droplet deposited on the textured surface, respectively. We uncovered the intermediate state, which is different from the CB and WZ states for wrinkles. Structures and free-energy profiles of metastable and transition states under various pressures were also investigated. Moreover, free-energy barriers for the (de)wetting transitions were quantified. On this basis, the roles of pressure and the unique structures of nanoscale wrinkles in the high water adhesion of rose petals were identified.

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“…As one of the three core technologies of electric vehicles, the power battery module is of great importance to the stability and safety of the vehicle (Lu et al, 2020). Lithium-ion batteries, as the most used battery in automotive battery modules, have many advantages such as long service life, high energy density and low self-discharge rate (Yang W. et al, 2020). However, lithium-ion battery also has many disadvantages, such as their high temperature requirements, and research shows that the most suitable operating range for lithium-ion batteries is 20-40 °C, with a temperature difference of 5 °C or less (Pradeep and Venugopal, 2020;.…”

Section: Introductionmentioning

confidence: 99%

Numerical research on lithium-ion battery thermal management utilizing a novel cobweb-like channel cooling plate exchanger

Zhao

Wang

et al. 2022

Front. Energy Res.

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As a key component of a pure electric vehicle, the battery in an overheated state will have a direct impact on battery life and vehicle safety. To promote battery heat dissipation, a novel cobweb-like type (C-type) channel cooling plate with asymmetric inlet and outlet is designed. The C-type channel cooling plate is numerically simulated in two coolant flow directions (Ifd and IIfd), using the computational fluid dynamics software STAR-CCM+, and compared to the conventional serpentine type (S-type) channel. Meanwhile, the effects of three structural parameters (channel diameter, spacing, and cooling plate thickness) on maximum temperature and temperature difference of the C-type cooling plate, and pressure drop are investigated. Based on this, the C-type channel is optimized by orthogonal test. The results show that the C-type with IIfd coolant flow direction has a better heat dissipation effect on the battery module than the C-type with Ifd and S-type under the same conditions, and the maximum temperature and temperature difference are respectively reduced by 0.2% and 17.8%, while the pressure drop is increased by 17.3%. In addition, increasing channel diameter can obtain good battery temperature distribution and smaller pressure drop, while the increase of cooling plate thickness and channel spacing has a greater effect on the battery temperature difference compared to the change of maximum temperature. Finally, the results of the orthogonal tests show that the cooling effect is best when the diameter of the cobweb-like channel cooling plate is 7 mm, the thickness of the cooling plate is 12 mm, and the channel spacing is 16 mm, and the maximum temperature and temperature difference are reduced by 0.7% and 6.8%, respectively, and the pressure drop is reduced by 37.6% compared to the initial cobweb-like channel scheme. This offers a fresh perspective on cooling plate channel design in liquid-cooled battery thermal management.

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Thermal performance of axial air cooling system with bionic surface structure for cylindrical lithium-ion battery module

Cited by 70 publications

References 40 publications

Thermal Performance of Reverse‐Layered Air‐Cooled Cylindrical Lithium Battery Pack Integrated with Staggered Battery Arrangement and Spoiler

Thermal Performance of Reverse‐Layered Air‐Cooled Cylindrical Lithium Battery Pack Integrated with Staggered Battery Arrangement and Spoiler

Molecular Dynamics Simulation on the Wettability of Nanoscale Wrinkles: High Water Adhesion of Rose Petals

Numerical research on lithium-ion battery thermal management utilizing a novel cobweb-like channel cooling plate exchanger

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