An innovative battery thermal management with thermally induced flexible phase change material

Wu, Weixiong; Liu, Jizhen; Liu, Min; Rao, Zhonghao; Deng, Hui; Qian, Wang; Xiao, Qi; Wang, Shuangfeng

doi:10.1016/j.enconman.2020.113145

Cited by 143 publications

(35 citation statements)

References 32 publications

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“…Then, a thermal management performance test system is established to evaluate the heat flux and temperature under different thermal management modules. The thermal contact resistance is calculated by using the one‐dimensional steady‐state method 27,28 . As shown in Figure 2, the specimen of thermal contact resistance test is composed of the heater, aluminum–plastic film, thermal insulation material, and the thermal management module.…”

Section: Experimental Setupsmentioning

confidence: 99%

The effect of reducing the thermal contact resistance on the performance of battery thermal management system

et al. 2021

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Summary With the increasing demand for the driving range of new energy vehicles, the energy of power battery is increasing. As a temperature‐sensitive component, the life, safety, and charge–discharge performance of lithium‐ion power battery will be affected by the working temperature, which makes the battery thermal management system particularly important. Concerning the fact that the thermal contact resistance between the power battery and the heat transfer components has become the bottleneck of battery thermal management system, this study firstly establishes a traditional sandwich structure of phase change material–based thermal management system and then try to reduce the thermal contact resistance of the system by increasing the thermal conductivity of the cooling part and filling the interface with high thermal conductivity material. The thermal contact resistance and the heat flux between the power battery and the thermal management module are experimentally tested and calculated. Based on the external and internal temperature of battery, the effect of contact resistance on the performance of a thermal management system is discussed. The results show that when increasing the thermal conductivity of the cooling part, the battery external and internal temperatures under 3C, 4C, and 5C discharge are reduced by 8.3%, 8.1%, 7.6% and 5.2%, 9.3%, 6.3%, respectively, as compared to the traditional sandwich structure of phase change material–based thermal management system. And the temperatures are further reduced by 6.5%, 7.7%, 6.3% and 7.8%, 6.1%, 7.3% when the interface between the battery and the thermal management module are filled with graphene with high thermal conductivity. Furthermore, the power battery can work within the optimum operating temperature range for a long period and can ensure battery safety by reducing the thermal contact resistance.

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Section: Experimental Setupsmentioning

confidence: 99%

The effect of reducing the thermal contact resistance on the performance of battery thermal management system

et al. 2021

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“…Flexible composite phase change material was the strong body at room temp and the battery do not be fitted into hole at the room temp. If flexible composite phase change material was heated to 70°C for a certain time, then it will changed into the battery and strong body which may be fitted into the hole under various force [11]. If an external force was unconstrained flexible composite phase change material has the recovering property to its correct shape.…”

Section: Experimental Setup 41 Battery Assembly Modelmentioning

confidence: 99%

Structural Analysis and Mechanical Properties of Thermal Battery by Flexible PCM

Pradeep¹,

Sankaramoorthy²,

Elango³

et al. 2021

JUSST

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An ancient BTM with PCM was controlled through the issues of high inflexibility of phase change material, leakage problems and very low conductivity in thermal energy. This research paper reports a facile batter thermal management and creativity along with induced non-rigid phase change material composites. This battery model can be determined by the flexible phase change material composites along with an intervention due to the recovery in shape and non-rigidity of flexible phase change components. This assemble was modeled to be efficient and compact without any requirement for grease. A constant state reveals various stages of phase change material which has various properties in thermal efficiency. A unified state was linked with the recovery shape of flexible phase change components which can cause a low resistance in FCPCM and battery. Battery thermal management demonstrates the perfect process of thermal control power. If the battery was discharged from 90 to 10% of charge, then the temperature of flexible phase change components depends upon battery thermal management. It was 44.5°C during the 3.5°C rate which was 29.8°C lower than no phase change material. It also reveals low-temperature oscillation inside the long-time process and range of heat of recovered phase change material. The performance of battery thermal management and its flexibility will give perceptions of passive battery thermal management systems.

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“…But active cooling systems often have complex structures and require some mechanical devices such as pumps or fans. Passive cooling systems rely on energy storage materials such as phase change materials (PCMs) to absorb the heat generated by the battery and thus cool the battery (Huang et al, 2019;Wu et al, 2020;Jilte et al, 2021). These passive cooling systems consume no energy, do not require any mechanical devices, having the advantages of compact structure, low cost, and no noise (Ping et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Simulative Investigations on a Water Immersion Cooling System for Cylindrical Battery Cells

et al. 2022

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High charge/discharge rates and high energy density require a greater cooling power and a more compact structure for battery thermal management systems. The Immersion cooling (direct liquid cooling) system reduces the thermal resistance between the cooling medium and the battery and greatly enhances the cooling effect of the system. However, the high viscosity and low specific heat capacity of dielectric fluid limit the cooling effect of immersion cooling. This study presents an immersion cooling system that uses water as the cooling medium. In this system, a special seal structure was designed to prevent contact between water and the battery’s electrodes. The cooling effect of the system on the battery pack was numerically studied. Even if the battery pack is discharged at 3 C rate, a small water flow rate (200 ml/min) can ensure that the maximum temperature of the battery pack falls below 50°C. However, a good cooling capacity will increase the temperature difference of the battery pack. The temperature difference of the battery pack is difficult to reduce to 5°C until the water flow rate exceeds 1,000 ml/min. Adding a buffer structure at the inlet/outlet can be reduced the negative effects of the turbulent flow and then improve the temperature uniformity of the battery pack. These findings provide a better understanding of the influencing factors of the water immersion cooling system and can help to design a better immersion cooling system.

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An innovative battery thermal management with thermally induced flexible phase change material

Cited by 143 publications

References 32 publications

The effect of reducing the thermal contact resistance on the performance of battery thermal management system

The effect of reducing the thermal contact resistance on the performance of battery thermal management system

Structural Analysis and Mechanical Properties of Thermal Battery by Flexible PCM

Experimental and Simulative Investigations on a Water Immersion Cooling System for Cylindrical Battery Cells

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