Development Status and Perspective Trend of Flexible Heat Pipe

doi:10.3901/JME.2022.10.265

Abstract

Abstract: Heat pipes, with the advantages of high heat transfer efficiency, high stability, long life and low cost, have become the main solution to the heat dissipation problem of high-performance microelectronic devices. However, the increasing popularity of flexible and wearable electronic devices raises the flexible demand for the heat dissipation system, while the traditional copper and aluminum heat pipes are unable to meet the heat dissipation demand of light and thin flexible electronic devices. The flexible heat pipe with the characteristics of flexible, high performance and lightweight has been proposed and has become the research focus of modern heat pipe technology. The structure types, encapsulation technology and application field of the flexible heat pipe are introduced, as well as the wicking structure and encapsulation technology at home and abroad are summarized. Furthermore, the shortcomings that existed on flexible heat pipe technology are pointed out and it is also suggested that more efforts should be made to what in the future.

Key words: flexible heat pipe, wick structure, microstructure manufacture, encapsulation technology, heat dissipation

CLC Number:

TK124

TANG Yong, SUN Yalong, TANG Heng, WAN Zhenping, YUAN Wei. Development Status and Perspective Trend of Flexible Heat Pipe[J]. Journal of Mechanical Engineering, 2022, 58(10): 265-279.

References

[1] 万忠民,陈敏,刘伟,等.基于多孔微热沉的大功率LED冷却技术研究[J].机械工程学报,2010,46(8):109-113. WAN Zhongmin,CHEN Min,LIU Wei,et al. Research on porous micro heat sink for thermal management of high power LED[J]. Journal of Mechanical Engineering,2010,46(8):109-113.
[2] ARSHAD A,ALI H M,ALI M,et al. Thermal performance of phase change material (PCM) based pin-finned heat sinks for electronics devices:Effect of pin thickness and PCM volume fraction[J]. Applied Thermal Engineering,2017,112:143-155.
[3] PAN M,LAI W. Cutting copper fiber/paraffin composite phase change material discharging experimental study based on heat dissipation capability of Li-ion battery[J]. Renewable Energy,2017,114:408-422.
[4] 王雅博,诸凯,崔卓,等.冷却水进出方式对芯片散热器换热性能影响[J].机械工程学报,2018,54(10):188-194. WANG Yabo,ZHU Kai,CUI Zhuo,et al. Influence of the location of the inlet and outlet on the chip heat sink[J]. Journal of Mechanical Engineering,2018,54(10):188-194.
[5] TANG H,TANG Y,WAN Z,et al. Review of applications and developments of ultra-thin micro heat pipes for electronic cooling[J]. Applied Energy,2018,223:383-400.
[6] VASILIEV L L. Heat pipes in modern heat exchangers[J]. Applied Thermal Engineering,2005,25(1):1-19.
[7] 汤勇,唐恒,万珍平,等.超薄微热管的研究现状及发展趋势[J].机械工程学报,2017,53(20):144-157. TANG Yong,TANG Heng,WAN Zhenping,et al. Development status and perspective trend of ultra-thin micro heat pipe[J]. Journal of Mechanical Engineering,2017,53(20):144-157.
[8] SINGH R,AKBARZADEH A,DIXON C,et al. Miniature loop heat pipe with flat evaporator for cooling computer CPU[J]. IEEE Transactions on Components and Packaging Technologies,2007,30(1):42-49.
[9] MOHAMMAD S A,YUJI S,KOICHI M,et al. Characterization of a high performance ultra-thin heat pipe cooling module for mobile hand held electronic devices[J]. Heat&Mass Transfer,2017,53(1):1-7.
[10] TANG Y,DING X,YU B,et al. A high power LED device with chips directly mounted on heat pipes[J]. Applied Thermal Engineering,2014,66(1-2):632-639.
[11] 汤勇,孙亚隆,郭志军,等.电机散热系统的研究现状与发展趋势[J].中国机械工程,2021,32(10):1135-1150. TANG Yong,SUN Yalong,GUO Zhijun,et al. Development status and perspective trend of motor cooling systems[J]. China Mechanical Engineering,2021,32(10):1135-1150.
[12] 陶鹏,常超,郭怀新,等.柔性热管的研究进展与展望[J].中国材料进展,2018,37(12):1025-1047. TAO Peng,CHANG Chao,GUO Huaixin,et al. Research progress and outlook of flexible heat pipe[J]. Materials China,2018,52(1-2):301-308.
[13] 崔丽萍,米珉,苗建印,等.柔性热管的传热试验研究与分析[C]//全国热管会议,2008-9-11,威海,中国.北京:中国工程热物理学会,2008:293-298. CUI Liping,MI Min,MIAO Jianyin,et al. Experimental study and analysis on heat transfer of flexible heat pipes[C]//Chinese Heat Pipe Conference,September 11,2008,Weihai,China. Beijing:Chinese Society of Engineering Thermophysics,2008:293-298.
[14] OSHMAN C,LI Q,LIEW L A,et al. Flat flexible polymer heat pipes[J]. Journal of Micromechanics and Microengineering,2013,23(1):015001.
[15] LI J,LÜ L,ZHOU G,LI X. Mechanism of a microscale flat plate heat pipe with extremely high nominal thermal conductivity for cooling high-end smartphone chips[J]. Energy Conversion and Management,2019,201:112202.
[16] CHEN Z,LI Y,ZHOU W,et al. Design,fabrication and thermal performance of a novel ultra-thin vapour chamber for cooling electronic devices[J]. Energy Conversion and Management,2019,187:221-231.
[17] CHEN G,TANG Y,WAN Z P,et al. Heat transfer characteristic of an ultra-thin flat plate heat pipe with surface functional wicks for cooling electronics[J]. International Communications in Heat and Mass Transfer,2019,100:12-19.
[18] 郭浩,纪献兵,徐进良.颗粒形貌及表面润湿性对毛细芯及环路热管性能的影响[J].机械工程学报,2020,56(14):173-179. GUO Hao,JI Xianbing,XU Jinliang. Effect of particle morphology and surface wettability on performance of porous wick and loop heat pipe[J]. Journal of Mechanical Engineering,2020,56(14):173-179.
[19] 陈芬.柔宇2018全球新品发布会-可折叠屏手机柔派面世[J].中国经济信息,2018,22:10. CHEN Fen. Royole 2018 global new product release conference-Flexible mobile phone with foldable screen[J]. China Economic Information,2018,22:10.
[20] FRANKLIN J C,MYERS S A,RAPPOPORT B M,et al. Flexible electronic devices:US,US8929085B2[P]. 2015-01-06.
[21] KO J H,KIM J H. Electronic device including flexible display element:US,US9983629B2[P]. 2018-05-29.
[22] 胡凯,朱光泽,韩萍,等.一种具有柔性屏幕的电子设备的显示方法及电子设备:中国,201910108021.8[P]. 2019-02-02. HU Kai,ZHU Guangze,HAN Ping,et al. An electronic device and a display method for electronic devices with flexible screens:China,201910108021.8[P]. 2019-02-02.
[23] WANG L J. Electronic device and flexible connecting device:US,US9921611B2[P]. 2018-03-20.
[24] 唐恒.丝网吸液芯超薄热管制造及其传热性能研究[D].广州:华南理工大学,2018. TANG Heng. Study on fabrication and heat transfer performance of ultra-thin heat pipe with copper mesh wick[D]. Guangzhou:South China University of Technology,2018.
[25] 陈杰凌.基于多孔吸液芯的超薄铝平板热管的制造及其传热性能研究[D].广州:华南理工大学,2018. CHEN Jieling. Fabrication and heat transfer performance of ultra-thin aluminum flat heat pipes based on porous wick[D]. Guangzhou:South China University of Technology,2018.
[26] CHEN G,TANG Y,et al. Thermal performance enhancement of micro-grooved aluminum flat plate heat pipes applied in solar collectors[J]. Renewable Energy,2020,146:2234-2242.
[27] LEE D,BYON C. Fabrication and characterization of pure-metal-based submillimeter-thick flexible flat heat pipe with innovative wick structures[J]. International Journal of Heat&Mass Transfer,2018,122:306-314.
[28] YASUMI S,YUICHI K,KENICHI N,et al. The ultra-thin sheet-shaped heat pipe 'PERA-FLEX'[C]//International Heat Pipe Conference,September 1,2004,Shanghai,China. Japan:The Furukawa Electric CO. LTD.,2004:250-255.
[29] GERNERT N,SARRAF D,STEINBERG M. Flexible heat pipe cold plates for aircraft thermal control[J]. SAE Transactions,1991,100:2352-2360.
[30] GLASS D E,STEVENS J C,Raman V V. Flexible heat pipes for a lightweight spacecraft radiator[J]. Journal of Spacecraft and Rockets,1999,36(5):711-718.
[31] 张建成,袁竹林.柔性热管在天文望远镜焦面散热器上的应用研究[J].能源研究与利用,1995(2):22-24. ZHANG Jiancheng,YUAN Zhulin. The application of flexible heat pipe in the radiator of focal plane of astronomical telescope[J]. Energy Research&Utilization,1995(2):22-24.
[32] AMBROSE J. Flex heat pipe East-West deployable radiator[J]. Microgravity Science and Technology,2019,31:311-316.
[33] 代轩.柔性热管热特性的实验研究及理论分析[D].广州:华南理工大学,2020. DAI Xuan. Experimental exploration and theoretical analysis on the thermal characteristics of flexible heat pipes[D]. Guangzhou:South China University of Technology,2020.
[34] JAIPURKAR T,KANT P,KHANDEKAR S,et al. Thermo-mechanical design and characterization of flexible heat pipes[J]. Applied Thermal Engineering,2017,126:1199-1208.
[35] AMELI M,AGNEW B,LEUNG P S,et al. A novel method for manufacturing sintered aluminium heat pipes[J]. Applied Thermal Engineering,2013,52(2):498-504.
[36] BABIN B R,PETERSON G P. Experimental investigation of a flexible bellows heat pipe for cooling discrete heat sources[J]. Journal of Heat Transfer,1990,112(3):602.
[37] YANG C,CHANG C,SONG C,et al. Fabrication and performance evaluation of flexible heat pipes for potential thermal control of foldable electronics[J]. Applied Thermal Engineering,2015,95:445-453.
[38] YANG C,SONG C Y,SHANG W,TAO P,DENG T. Flexible heat pipes with integrated bioinspired design[J]. Progress in Natural Science:Materials International,2015,25:51-57.
[39] QU J,WANG C,LI X,et al. Heat transfer performance of flexible oscillating heat pipes for electric/hybrid-electric vehicle battery thermal management[J]. Applied Thermal Engineering,2018,135:1-9.
[40] QU J,LI X,CUI Y,et al. Design and experimental study on a hybrid flexible oscillating heat pipe[J]. International Journal of Heat and Mass Transfer,2017,107:640-645.
[41] HUANG J L,ZHOU W,XIANG J H,et al. Development of novel flexible heat pipe with multistage design inspired by structure of human spine[J]. Applied Thermal Engineering,2020,175:115392.
[42] TANAKA K,ABE Y,NAKAGAWA M,et al. Low-gravity experiments of lightweight flexible heat pipe panels with self-rewetting fluids[J]. Annals of the New York Academy of Sciences,2009,1161(1):554-561.
[43] LIEW L A,LIN C Y,LEWIS R,et al. Flexible thermal ground planes fabricated with printed circuit board technology[J]. Journal of Electronic Packaging,2017,139:0110031-01100310.
[44] LEWIS R,XU S,LIEW L A,et al. Thin flexible thermal ground planes:Fabrication and scaling characterization[J]. Journal of Microelectromechanical Systems,2015,24(6):2040-2048.
[45] OSHMAN C,SHI B,LI C,et al. The development of polymer based flat heat pipes[J]. Journal of Microelectromechanical Systems,2011,20(2):410-417.
[46] OSHMAN C,LI Q,LIEW L A,et al. Thermal performance of a flat polymer heat pipe heat spreader under high acceleration[J]. Journal of Micromechanics and Microengineering,2012,22(4):045018.
[47] LIM J,KIM S J. Fabrication and experimental evaluation of a polymer-based flexible pulsating heat pipe[J]. Energy Conversion and Management,2018,156:358-364.
[48] LEWIS R,LIEW L A,XU S,et al. Microfabricated ultra-thin all-polymer thermal ground planes[J]. Science Bulletin,2015,60(7):701-706.
[49] HSIEH S S,YANG Y R. Design,fabrication and performance tests for a polymer-based flexible flat heat pipe[J]. Energy Conversion and Management,2013,70:10-19.
[50] WANG X,ZHU Y,ZHU M,et al. Thermal analysis and optimization of an ice and snow melting system using geothermy by super-long flexible heat pipes[J]. Applied Thermal Engineering,2017,112:1353-1363.
[51] 唐恒,汤勇,万珍平,等.平板铝热管微沟槽吸液芯的制备及毛细性能研究[J].机械工程学报,2019,55(6):186-193. TANG Heng,TANG Yong,WAN Zhenping,et al. Fabrication and capillary performance of micro-grooved wicks for aluminum flat-plate heat pipes[J]. Journal of Mechanical Engineering,2019,55(6):186-193.
[52] LIU C,LI Q,FAN D. Fabrication and performance evaluation of flexible flat heat pipes for the thermal control of deployable structure[J]. International Journal of Heat and Mass Transfer,2019,144:118661.
[53] WU S C,GU T W,WANG D,et al. Study of PTFE wick structure applied to loop heat pipe[J]. Applied Thermal Engineering,2015,81:51-57.
[54] BOO J H,CHUNG W B. Experimental study on the thermal performance of a small-scale loop heat pipe with polypropylene wick[J]. Journal of Mechanical Science and Technology,2005,19(4):1052-1061.
[55] MITOMI M,NAGANO H. Long-distance loop heat pipe for effective utilization of energy[J]. International Journal of Heat and Mass Transfer,2014,77:777-784.
[56] NISHIKAWARA M,NAGANO H,KAYA T. Transient thermo-fluid modeling of loop heat pipes and experimental validation[J]. Journal of Thermophysics and Hear Transfer,2013,27(4):641-647.
[57] KOBAYASHI T,OGUSHI T,HAGA S,et al. Heat transfer performance of a flexible looped heat pipe using R134a as a working fluid:Proposal for a method to predict the maximum heat transfer rate of FLHP[J]. Heat Transfer-asian Research,2003,32(4):306-318.
[58] OGUSHI T,YAO A,XU J J,et al. Heat transport characteristics of flexible looped heat pipe under micro-gravity condition[J]. Heat Transfer-asian Research,2003,32(5):381-390.
[59] NAGANO H,FUKUYOSHI F,OGAWA H,et al. Development of an Experimental Small Loop Heat Pipe with Polytetrafluoroethylene Wicks[J]. Journal of Thermophysics and Heat Transfer,2011,25(4):547-552.
[60] 程丽丽,江玲.黄铜和不锈钢丝网电磁屏蔽效能的研究[J].电子质量,2006,9:72-74. CHENG Lili,JIANG Ling. Research of electromagnetic shielding effectiveness of brass and stainless steel wire-mesh screen[J]. Electronics Quality,2006,9:72-74.
[61] LI Y,ZHOU W. Thermal performance of ultra-thin heat pipes with composites wick structure[J]. Applied Thermal Engineering,2016,102:487-499.
[62] GUPTA N K,SEKHON G S,GUPTA P K. Study of lateral compression of round metallic tubes[J]. Thin-Walled Structures,2005,43(6):895-922.
[63] BAYOUMI L S. Analysis of flow and stresses in flattening a circular tube by rolling[J]. Journal of Materials Processing Technology,2002,128(1):130-135.
[64] ZHOU W,LI Y,et al. Ultra-thin flattened heat pipe with a novel band-shape spiral woven mesh wick for cooling smartphones[J]. International Journal of Heat and Mass Transfer,2020,146:118792.
[65] 李春威.复合材料胶接技术的发展与应用[J].航空制造技术,2011,20:88-91. LI Chunwei. Development and application of composites adhesive bonding technology[J]. Aeronautical Manufacturing Technology,2011,20:88-91.
[66] 周利,秦志伟,刘杉,等.热塑性树脂基复合材料连接技术的研究进展[J].材料导报,2019,33(19):3177-3183. ZHOU Li,QIN Zhiwei,LIU Shan,et al. Progress on joining technology of thermoplastic resin matrix composites[J]. Materials Reports,2019,33(19):3177-3183.
[67] SUN C,MIN J,LIN J,et al. The effect of laser ablation treatment on the chemistry,morphology and bonding strength of CFRP joints[J]. International Journal of Adhesion and Adhesives,2018,84:325-334.
[68] ZHAN X H,Li Y,Gao C Y,et al. Effect of infrared laser surface treatment on the microstructure and properties on adhesively CFRP bonded joints[J]. Optics and Laser Technology,2018,106:398-409.
[69] TAO R,ALFANO M,LUBINEAU G. Laser-based surface patterning of composite plates for improved secondary adhesive bonding[J]. Composites Part A:Applied Science and Manufacturing,2018,109:84-94.
[70] 唐清华,黄乃宁,张文良,等. Monel400波纹管焊接工艺的研究[J].焊接,2015(3):43-44. TANG Qinghua,HUANG Naining,ZHANG Wenliang,et al. Study on welding process of Monel400 bellows[J]. Welding&Joining,2015(3):43-44.
[71] 陈荣发.波纹管与直管的连接结构:中国,201620569092. X[P]. 2016-11-16. CHEN Rongfa. Connection structure between bellows and straight pipes:China,201620569092. X[P]. 2016-11-16.
[72] 王浩.一种直管与波纹管的转换连接装置:中国,201521082429.6[P]. 2016-05-18. WANG Hao. A conversion/connection device between straight pipes and bellows:China,201521082429. 6[P]. 2016-05-18.
[73] HUI H,DING Y,SHI D,et al. 5G network-based Internet of things for demand response in smart grid:A survey on application potential[J]. Applied Energy,2020,257:113972.
[74] FENG C,BAI L,BAO R,et al. Superior thermal interface materials for thermal management[J]. Composites Communications,2019,12:80-85.
[75] ZHAO J,ZHAO R,HUO Y,et al. Effects of surface roughness,temperature and pressure on interface thermal resistance of thermal interface materials[J]. International Journal of Heat and Mass Transfer,2019,140:705-716.
[76] JI Y,YAN H,XIAO X,et al. Excellent thermal performance of gallium-based liquid metal alloy as thermal interface material between aluminum substrates[J]. Applied Thermal Engineering,2020,166:114649.