Cooling performance optimization of air-cooled battery thermal management system

Wang, Meiwei; Teng, Shiyang; Xi, Huan; Li, Yuquan

doi:10.1016/j.applthermaleng.2021.117242

Cited by 138 publications

(31 citation statements)

References 42 publications

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“…Their results indicated that T‐type‐based BTMS was more effective while the battery performed optimal thermal behavior when top inclination angle of box obtained 41.5°. Furthermore, Wang et al [ 68 ] systematically discussed the airflow distribution of typical Z‐type BTMS after adding parallel plate, as shown in Figure 3 . For original BTMS, the optimal T max and Δ T max could be obtained by BTMS IX and VII in their work, respectively.…”

Section: Traditional Battery Cooling Strategiesmentioning

confidence: 99%

Recent Developments of Thermal Management Strategies for Lithium‐Ion Batteries: A State‐of‐The‐Art Review

2022

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The performance of lithium‐ion batteries is quite dependent on temperature and a series of investigations on the battery thermal management system (BTMS) have been reported during the past decades. Herein, the recent developments of BTMS are thoroughly summarized. First, the thermal characteristics of the battery caused by different temperature conditions and temperature nonuniformity are described. Then, the thermal models, including electro‐thermal coupled model and electrochemical–thermal coupled model are briefly presented. Subsequently, various traditional strategies like air cooling, liquid cooling, phase change material (PCM) cooling, and heat pipe cooling are elaborated. With the development of battery technology, BTMS based on a single strategy alone cannot meet the growth of thermal requirements, especially under dynamic and high‐power energy conditions. Hence, a hybrid BTMS that integrates two or more cooling strategies begins to be studied and provide a feasible solution for the problem. The related studies on hybrid BTMS are also systematically reviewed from the perspective of combinations, such as air–PCM, liquid–PCM, heat pipe–PCM, and other hybrid strategies. Besides, the current research on battery preheating strategies is also summarized. Finally, insufficient present studies are pointed out, aiming to provide comprehensive guidance toward the development of battery thermal management.

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Section: Traditional Battery Cooling Strategiesmentioning

confidence: 99%

Recent Developments of Thermal Management Strategies for Lithium‐Ion Batteries: A State‐of‐The‐Art Review

2022

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“…The following Equation ( 3)-( 5) are, respectively, expressed as the energy conservation equation, continuity equation, and momentum conservation equation of air. [32] Energy conservation equation…”

Section: Computational Fluid Dynamicsmentioning

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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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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“…Research of liquid cooling mainly focus on the ability of the structure of the cooling plate, the materials of the fluid, the temperatures of the fluid and the velocities of the fluid flow on the battery temperature [7][8][9][10]. Researches on air cooling mainly focus on the air intake and the arrangement of the batteries [11][12][13][14].Studies on phase change materials cooling are mainly concentrated in the properties of material, batteries arrangement, and the structure of the battery fins [15][16][17]. Compared with the traditional cooling structure that uses the sensible heat of the cooling liquid, DRC system uses phase change theory meet the cooling demand of the batteries [18], eliminates the need for secondary heat exchange between refrigerant and coolant.…”

Section: Introductionmentioning

confidence: 99%

Study on direct refrigerant cooling for lithium-ion batteries of electric vehicles

2022

J. Phys.: Conf. Ser.

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For the purpose of improving the working efficiency of lithium-ion batteries for electric vehicles (EVs), prevent battery catching fire and improve the economy of battery thermal management systems (BTMS), in this study a BTMS simulation model with direct cooling struct is built. The evaporator in the cooling circuit of the battery cells directly exchanges heat with the batteries. The performance of models using conventional R134a and environmentally friendly R1234yf was investigated without changing the model structure. The results show that: in normal temperature environment, the BTMS can effectively restrain the battery temperature from rising, the battery temperature would be suppressed under 305 K, the minimum difference of battery pack maximum temperature (T max ) and energy consumption of the BTMS using two refrigerants is 2 K and 2.3% respectively; when the working temperature is high, the BTMS can quickly drop the cells temperature below 313 K, and the shortest time difference that falling to 313K, is only 66s, and the minimum power consumption difference is 3.2%.

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Cooling performance optimization of air-cooled battery thermal management system

Cited by 138 publications

References 42 publications

Recent Developments of Thermal Management Strategies for Lithium‐Ion Batteries: A State‐of‐The‐Art Review

Recent Developments of Thermal Management Strategies for Lithium‐Ion Batteries: A State‐of‐The‐Art Review

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

Study on direct refrigerant cooling for lithium-ion batteries of electric vehicles

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