Liquid cooling of bright LEDs for automotive applications |
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| Authors: | Yan Lai Nicolás Cordero Frank Barthel Frank Tebbe Jörg Kuhn Robert Apfelbeck Dagmar Würtenberger |
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| Affiliation: | 1. Tyndall National Institute, Theory, Modelling and Design Centre, Lee Maltings, Prospect Row, Cork, Ireland;2. Odelo GmbH, Alfred-Schefenacker-Strasse 1, D-71409, Schwaikheim, Germany;1. State Key Laboratory of High Performance Complex Manufacturing and School of Mechanical and Electronical Engineering, Central South University, Changsha 410083, China;2. School of Mechanical and Electronical Engineering, Nanchang University, Nanchang 330031, China;1. R & D Division, NTF Tech Co., 37 Nakdong-Daero 550, Saha-gu, Busan, Republic of Korea;2. Department of Mechanical Engineering, Dong-A University, 37 Nakdong-Daero 550, Saha-gu, Busan, Republic of Korea;1. Department of Mechanical Engineering, Technical University of Denmark, Nils Koppels Allé, Building 404, Kgs. Lyngby DK-2800, Denmark;2. School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, M13 9PL Manchester, UK;1. Department of Materials Science and Engineering, Pusan National University, Busan 46241, South Korea;2. Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA;3. Korea Institute of Industrial Technology (KITECH), Busan 46742, South Korea;1. Advanced Nanoengineering Materials Laboratory, Materials Science Programme, Indian Institute of Technology Kanpur, Kanpur-208016, India;2. Advanced Nanoengineering Materials Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur-208016, India |
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| Abstract: | With the advances in the technology of materials based on GaN, high brightness white light emitting diodes (LEDs) have flourished over the past few years and have shown to be very promising in many new illumination applications such as outdoor illumination, task and decorative lighting as well as aircraft and automobile illuminations. The objective of this paper is to investigate an active liquid cooling solution of such LEDs in an automotive headlights application. The thermal design from device to board to system level has been carried out in this research. Air cooling and passive liquid cooling methods were investigated and excluded as unsuitable, and therefore an active liquid cooling solution was selected. Several configurations of the active liquid cooling system were studied and optimisation work was carried out to find an optimum thermal performance. |
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