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鋰電池是典型不管任何包裝形式是圓形, 方形, 片狀, 甚至大型磷酸理鐵電池…都是屬於熱傳導異方向性(THERMAL CONDUCTIVITY ANISOTROPIC)的物件, 所以利用HOT DISK 特殊量測異方向性的熱傳導功能在研究電池的熱傳導領域將來也會愈來越多。
▲ 各種形式的鋰電池  ▲ 熱傳導異方向性 《分享》論文①EXPERIMENTAL AND NUMERICAL INVESTIGATION ON INTEGRATED THERMAL MANAGEMENT FOR LITHIUM-ION BATTERY PACK WITH COMPOSITE PHASE CHANGE MATERIALS Author(s): Dongsheng Wena, Hongwei Wuc, Jincheng Tanga, Shang Shib, Yongqi Xiea, Yuming Xinga, Zhongliang Hud Keywords: composites, electronics, Fillers, HOT DISK, Integrated thermal management , Lithium-ion power battery, phase change materials, Thermal Conductivity, Transient plane source (TPS) method Abstract: In this study, thermal behaviors of an integrated thermal management system (ITMS) with phase change materials (PCMs) and air conditioning exhaust are examined. To enhance thermal conductivity of the PCM, copper foam and paraffin were added. Thermal conductivity of the composite PCM was measured by TPS 1500 HOT DISK analyzer, based on the transient plane source method. Reference: Energy Conversion and Management (2017), 154: 562-575 DOI: 10.1016/j.enconman.2017.11.046 《分享》論文②GRAPHENE-ENHANCED PHASE CHANGE MATERIALS FOR THERMAL MANAGEMENT OF BATTERY PACKS Author(s): Alexander A. Balandin, Pradyumna Goli Keywords: Fillers, graphene, lithium-ion batteries, pcms, phase change materials, Thermal Conductivity, TPS Technique, Transient Plane Source, Transient plane source (TPS) method, HOT DISK Abstract: The potential of graphene and few-layer graphene to be used as fillers in a paraffin wax phase change material (PCM) was evaluated. The goal was to prepare a composite PCM with a higher thermal conductivity than the pure paraffin wax. The ability of the composite PCM to reduce temperature variation in lithium ion batteries was also evaluated over 10 charging – discharging cycles. It was found that the composite PCM was better able to reduce the temperature rise induced by charging and discharging than the pure paraffin PCM. Reference: 2014 IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm) (2014) 1390-1393 DOI: 10.1109/ITHERM.2014.6892442 《分享》論文③GRAPHENE THERMAL PROPERTIES: APPLICATIONS IN THERMAL MANAGEMENT AND ENERGY STORAGE Category: HOT DISK TPS Author(s): Alexander A. Balandin, Denis L. Nika, Jackie D. Renteria Keywords:Fillers, graphene, Nanoparticles, pcms, phase change materials, Thermal Conductivity, thermal energy storage, transient plane source method, HOT DISK Abstract: The authors present a review of the thermal properties of graphene, and present one example of a practical application of graphene in thermal management, as an additive to phase change materials. It was found that the use of liquid-phase-exfoliated graphene as a filler in phase change materials has potential to enhance the thermal management in high-power battery packs. The results also indicated that graphene had the potential to outperform metal nanoparticles and other carbon allotropes as a filler in these materials. Reference: Applied Sciences, 4, 4 (2014) 525-547 DOI: 10.3390/app4040525 《分享》論文④TOWARD LITHIUM ION BATTERIES WITH ENHANCED THERMAL CONDUCTIVITY Author(s): Alexander A. Balandin, Anirudha V. Sumant, Bonil Koo, Christopher S. Johnson, Elena V. Shevchenko, Paula Cecilia dos Santos Claro, Pradyumna Goli, Tijana Rajh Keywords: Batteries, carbon black, Carbon nanotubes, CNTs, Cross-plane TC, Electrodes, Filtration, High-power-density batteries, HOT DISK , In-plane TC, Lithium-ion, Multiwalled carbon nanotubes (MWCNTs), Nanoparticles, Temperature, thermal management, Transient plane source (TPS), Transient plane source (TPS) method, Y-Fe2O3 Abstract: Li-ion battery electrodes are typically mixed with carbon black materials which have low thermal conductivity in high-power-density battery applications. In this study, multi-walled carbon nanotubes (MWCNTs) were added to Li-ion battery electrodes to improve thermal conductivity. A HOT DISK measured the thermal conductivity of the electrode samples at room temperature using the transient plane source (TPS) method. Results showed that the addition of MWCNTs enhanced the thermal conductivity of the electrodes by up to two orders of magnitude compared to the conventional mode of synthesis. The success of this research can be applied to the thermal management of commercial electrode-active products in the future. Reference: American Chemistry Society (ACS) Nano, 8, 7 (2014) 7202-7207 DOI: 10.1021/nn502212b 《分享》論文⑤GRAPHENE-ENHANCED HYBRID PHASE CHANGE MATERIALS FOR THERMAL MANAGEMENT OF LI-ION BATTERIES
Author(s): A. Dhar, Alexander A. Balandin, J. Renteria, P. Goli, R. Salgado, S. Legedza Keywords: Fillers, graphene, hybrid phase change material, hydrocarbon, latent heat, lithium-ion batteries, mobile communications, pcms, phase change materials, self-heating, Temperature, Thermal Conductivity, thermal management, transient plan source technique, transport properties ,HOT DISK Abstract: In this article, researchers aim to improve the thermal management of Li-ion batteries, by introducing graphene fillers to hybrid phase change materials. The thermal management of any battery is dependent on the latent heat stored within the phase change material as it transitions phases. During this time, it is also crucial to reduce the chances of an internal temperature rise. Researchers used the HOT DISK Transient Plane Source 2500 S model to determine the thermal conductivity of the phase change materials. The results concluded that the addition of graphene to the phase change materials, increased the thermal conductivity by over two orders of magnitude, while maintaining the latent heat storage ability, as well as maintaining a lower internal battery temperature. Reference: Journal of Power Sources, 248, (2014) 37-43 DOI: 10.1016/j.jpowsour.2013.08.135 |
