With the booming development of the automotive industry, the demand for automotive grade LEDs continues to rise and has become a barometer for future lighting technology. The application of LED in automobiles is very extensive, covering almost all lighting and indication fields of automobiles.

The main applications of LED in automobiles are as follows:

External lighting system

Headlights, fog lights, turn signals, brake lights, reverse lights, clearance lights, license plate lights, parking lights, warning lights, daytime running lights, adaptive front lighting system, etc.

Internal lighting system

Ceiling lights, reading lights, luggage compartment lights, door interior lighting, display backlight, indicator lights, floor lights, dashboard lighting, etc.

Special lighting purposes

Interior ambient lights, work lights (such as maintenance lights), map lights, welcome lights, floodlights, etc.


Challenges faced by high-power LEDs

High power LEDs have the characteristics of high brightness, good focusing, high light efficiency, low energy consumption, and long lifespan, and are widely used in places such as car headlights and high beams that require high brightness and long-distance lighting. However, there are still some problems and challenges in the practical application of high-power LEDs:


Heat dissipation issue

High power LEDs generate a large amount of heat during operation, requiring effective heat dissipation structures to ensure their luminous efficiency and lifespan.

Light attenuation problem

During long-term use, the luminous flux of high-power LEDs will gradually decrease, and factors such as chip quality, packaging process, and usage environment need to be considered.

Cost issue

The technical requirements and manufacturing process of high-power LEDs are relatively complex, and the cost is high.

Drive power supply issue

High power LEDs require a stable driving power supply to ensure their normal operation.

Standardization issues

At present, the standardization level of high-power LEDs is relatively low, and there are differences in performance, interfaces, and other aspects among products from different manufacturers and models.

In addition, the AEC-Q102 certification for automotive grade reliability of high-power LEDs also faces challenges. Traditional aging equipment has deficiencies in heat dissipation and power supply, making it difficult to accurately control temperature or provide stable high current output, resulting in difficulty in meeting aging testing standards.


High power LED water-cooled aging test plan

In order to solve the difficulties encountered in the AEC-Q102 testing and certification of high-power LEDs, SGS Semiconductor Laboratory has launched a dedicated water-cooled aging testing solution for high-power LEDs after multiple iterations! This testing plan adopts water cooling technology, which quickly removes the heat generated by high-power LEDs through an efficient heat dissipation system, ensuring stable and controllable temperature during the testing process. At the same time, through the combination of software and hardware, real-time collection, analysis, and processing of test data have been achieved, greatly improving the accuracy and reliability of testing.


Technical advantages of high-power LED water cooling testing scheme

1. Efficient heat dissipation technology

Adopting water-cooled heat dissipation technology, the heat generated by high-power LEDs is quickly removed through circulating water flow. Compared with traditional air cooling, its heat dissipation efficiency is higher to ensure the stability and reliability of testing.
2. Precise testing system

By utilizing high-precision sensors and advanced data acquisition systems, key parameters such as temperature, current, and voltage of LEDs can be monitored and recorded in real time. This not only ensures the accuracy of test data, but also provides strong support for subsequent product improvement and performance optimization.

3. Intelligent control system

The device can be easily operated and monitored through a touch screen or remote computer, and its intuitive user interface and rich functional options make it easy to perform parameter settings, test startup, data viewing, and other operations, making the testing process more convenient and efficient.

4. Highly customizable

Flexible adjustments can be made according to the specific needs of customers and the characteristics of LED products. Whether it‘s setting test parameters, customizing test processes, or generating test reports, SGS can provide personalized solutions.