Phase Change Material for Thermal Management in 3D Integrated Circuits Packaging

Effective thermal control and management in three-dimensional electronic packaging are desirable to ensure the heat generated in integrated circuits can be dissipated. Conventional base materials in electronics from substrate to protective layers, due to low coefficient of thermal conductivity, cannot help to cool down the circuits, while such elevated temperature could highly impact the performance of the chips. In this study, phase change material (PCM) is selected for potential applications in thermal management of electronic packaging due to its isothermal nature and high thermal storage capability. PCM based composite is developed through the impregnation technology using highly porous expanded graphite. Heat transfer test results reveal that the PCM based composite displays superior heat storage capacity, while maintaining the favorable feature of thermal and chemical stabilization for electronic applications. Toward the end, the concept of implementation of PCM based composite is proposed in thermal control of 3D integrated circuits. It is expected the proposed composite will improve heat dissipation, and ultimately enhance the performance of the chips.

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Structural Analysis and Mechanical Properties of Thermal Battery by Flexible PCM

Journal of University of Shanghai for Science and Technology ◽

10.51201/jusst/21/05276 ◽

2021 ◽

Vol 23 (06) ◽

pp. 489-498

Author(s):

G M Pradeep ◽

◽

T Sankaramoorthy ◽

M Elango ◽

T NaveenKumar ◽

...

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Thermal Management ◽

Thermal Control ◽

Temperature Oscillation ◽

Battery Thermal Management ◽

Long Time ◽

Constant State ◽

Change Material ◽

Change Components

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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Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management

Materials ◽

10.3390/ma13214763 ◽

2020 ◽

Vol 13 (21) ◽

pp. 4763

Author(s):

Ziqiang Liu ◽

Juhua Huang ◽

Ming Cao ◽

Guiwen Jiang ◽

Jin Hu ◽

...

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Thermal Management ◽

Heat Dissipation ◽

Silicone Oil ◽

Conductive Filler ◽

Methyl Silicone ◽

Battery Thermal Management ◽

Thermally Conductive ◽

Change Material

To improve the problems of large interface thermal resistance and low heat dissipation efficiency in battery thermal management (BTM), this paper uses methyl silicone oil as the matrix, AIN, copper powder (CP), and carbon fiber (CF) as thermally conductive fillers, and acetone and stearic acid as particle surface modification components. A variety of binary thermal silicone greases (TSGs) with different compositions were prepared. Different instruments were used to test the material properties of TSGs, and a better TSG was selected to coat the interface between battery and phase change material (PCM) for battery charging and discharging experiments. Through the analysis of experimental data, it was found that among the TSGs made of three mixed fillers (AIN/CP, AIN/CF, CP/CF), the three TSGs had good thermal stability, and their thermal degradation temperature both exceeded 300 °C. As the ratio of thermally conductive filler was gradually changed from 5:1 to 1:5, the TSG containing CP/CF had higher thermal conductivity and lower volume resistivity, while the TSG containing AIN/CF had the least damage due to interface wear. The acidification treatment of thermally conductive filler can improve the adsorption and compatibility of thermally conductive particles and silicone oil, and reduce the oil separation rate of TSGs. The prepared expanded graphite (EG)/paraffin wax (PW) composite phase change material (CPCM) has a relatively large latent heat of phase change, which can effectively control the temperature of the battery, but coating TSG between the battery and the CPCM can further enhance the heat dissipation effect of the battery.

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A phase change material with enhanced thermal conductivity and secondary heat dissipation capability by introducing a binary thermal conductive skeleton for battery thermal management

Applied Thermal Engineering ◽

10.1016/j.applthermaleng.2018.11.100 ◽

2019 ◽

Vol 148 ◽

pp. 984-991 ◽

Cited By ~ 38

Author(s):

Jieshan He ◽

Xiaoqing Yang ◽

Guoqing Zhang

Keyword(s):

Thermal Conductivity ◽

Phase Change ◽

Phase Change Material ◽

Thermal Management ◽

Heat Dissipation ◽

Battery Thermal Management ◽

Change Material ◽

Enhanced Thermal Conductivity

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Crystallization Induced Realignment of Carbon Fiber in Phase Change Material to Achieve Exceptional Thermal Transportation Properties

Journal of Materials Chemistry A ◽

10.1039/d1ta09056a ◽

2021 ◽

Author(s):

Maohua Li ◽

Linhong Li ◽

Yue Qin ◽

Xianzhe Wei ◽

Xiangdong Kong ◽

...

Keyword(s):

Carbon Fiber ◽

Phase Change ◽

Phase Change Material ◽

Thermal Management ◽

Heat Dissipation ◽

Electronic Equipment ◽

High Demand ◽

Change Material

Considering the significant threat of heat to electronic equipment and the heat dissipation problems existing in powerful systems, thermal management materials are in high demand. In conjunction with the increasing...

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Study of Thermal Management System Using Composite Phase Change Materials and Thermoelectric Cooling Sheet for Power Battery Pack

Energies ◽

10.3390/en12101937 ◽

2019 ◽

Vol 12 (10) ◽

pp. 1937 ◽

Cited By ~ 3

Author(s):

Chuan-Wei Zhang ◽

Shang-Rui Chen ◽

Huai-Bin Gao ◽

Ke-Jun Xu ◽

Zhan Xia ◽

...

Keyword(s):

Surface Temperature ◽

Phase Change ◽

Phase Change Material ◽

Thermal Management ◽

Heat Dissipation ◽

Lithium Ion ◽

High Rate ◽

Thermoelectric Cooling ◽

Power Battery ◽

Change Material

Scientific and reasonable battery thermal management systems contribute to improve the performance of a power battery, prolong its life of service, and improve its safety. Based on TAFEL-LAE895 type 100Ah ternary lithium ion power battery, this paper is conducted on charging and discharging experiments at different rates to study the rise of temperature and the uniformity of the battery. Paraffin can be used to reduce the surface temperature of the battery, while expanded graphite (EG) is added to improve the thermal conductivity and viscosity of the composite phase change material (CPCM), and to reduce the fluidity after melting. With the increase of graphite content, the heat storage capacity of phase change material (PCM) decreases, which affects the thermal management effect directly. Therefore, this paper combines heat pipe and semiconductor refrigeration technology to transform heat from the inner CPCM to the thermoelectric cooling sheet for heat dissipation. The results show that the surface temperature of the battery can be kept within a reasonable range when discharging at high rate. The temperature uniformity of the battery is improved and the energy of the battery is saved.

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