Thermal analysis of LED arrays for automotive headlamp with a novel cooling system

Sunho Jang, Moo Whan Shin

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

In this paper, we report the thermal performance of a light-emitting diode (LED) headlamp module with a novel cooling system. An air-circulating cooling system was design for the LED headlamp module. The precise fluid field modeling and heat transfer analysis using computational fluid dynamics were performed according to the practical working conditions for the headlamp. The junction temperatures of LEDs were found to decrease by using the air-cooling system and, thus, improved the heat dissipating capability of the LED array. The junction temperature of the LED array was decreased from 70.6°C to 30.25°C when the circulating speed of the air increased from 0 to 120 km/h. Also, the temperature decrease of 2°C- 4°C was obtained by using fins. By thermal analysis, the cooling system of LED arrays for the headlamps was found to be feasible. Also, the reliability of the headlamp with LED arrays can be improved with a good cooling system.

Original languageEnglish
Article number4655584
Pages (from-to)561-564
Number of pages4
JournalIEEE Transactions on Device and Materials Reliability
Volume8
Issue number3
DOIs
Publication statusPublished - 2008 Sep 1

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Cooling systems
Thermoanalysis
Light emitting diodes
Air
Temperature
Computational fluid dynamics
Heat transfer
Fluids

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Safety, Risk, Reliability and Quality
  • Electrical and Electronic Engineering

Cite this

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abstract = "In this paper, we report the thermal performance of a light-emitting diode (LED) headlamp module with a novel cooling system. An air-circulating cooling system was design for the LED headlamp module. The precise fluid field modeling and heat transfer analysis using computational fluid dynamics were performed according to the practical working conditions for the headlamp. The junction temperatures of LEDs were found to decrease by using the air-cooling system and, thus, improved the heat dissipating capability of the LED array. The junction temperature of the LED array was decreased from 70.6°C to 30.25°C when the circulating speed of the air increased from 0 to 120 km/h. Also, the temperature decrease of 2°C- 4°C was obtained by using fins. By thermal analysis, the cooling system of LED arrays for the headlamps was found to be feasible. Also, the reliability of the headlamp with LED arrays can be improved with a good cooling system.",
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Thermal analysis of LED arrays for automotive headlamp with a novel cooling system. / Jang, Sunho; Shin, Moo Whan.

In: IEEE Transactions on Device and Materials Reliability, Vol. 8, No. 3, 4655584, 01.09.2008, p. 561-564.

Research output: Contribution to journalArticle

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