Light emitting diode (LED) chip driving system with thermal management function and control method thereof

Abstract

The invention discloses a light emitting diode (LED) chip driving system with a thermal management function. The system comprises an LED chip module and a control system, wherein the LED chip module comprises an LED luminous component part, a thermistor part, an active heat dissipation part, a metal heat conduction part and a passive heat dissipation part; the LED luminous component part is in an upside down mounted structure, the thermistor part is manufactured with silicon as the substrate, and the LED part and the thermistor part are integrated by welding; the active heat dissipation part is connected with the thermistor part to realize primary heat dissipation of energy generated by the LED; the metal heat conduction part is connected with the active heat dissipation part to realize secondary heat dissipation of energy generated by the LED; the passive heat dissipation part is connected with the metal heat conduction part to realize tertiary heat dissipation of energy generated by the LED; and the control system is used for heat dissipation control of the LED chip module. The structure can effectively improve the defect of the traditional LED chip of only measuring the temperature of a heat dissipation base rather than directly measuring the temperature at the core of a chip. The invention also discloses a control method of the LED chip driving system.

Description

technical field [0001] The invention belongs to the lighting field, in particular to a high-power LED chip temperature detection and heat dissipation structure. Background technique [0002] Light-emitting diodes (LEDs) have the advantages of high reliability, low power consumption, long life, less pollution, and strong shock resistance. They are recognized by the world as one of the important ways to achieve energy conservation and environmental protection, and have the potential to replace traditional lighting sources. High-power LED light source is the main development direction in the field of semiconductor lighting. [0003] Keeping the LED chip node at high temperature for a long time will cause the LED light efficiency to drop sharply and the life span will inevitably be shortened. Therefore, the node temperature of the LED can be effectively and accurately measured, and fed back to the control circuit in time to adjust the heat dissipation intensity and LED working...

AI Technical Summary

Problems solved by technology

[0004] At the same time, usually the LED heat dissipation system adopts the basic heat pipe, scale, and fan combination heat dissipation method. Such a passive heat dissipation system has low heat dissipation efficiency and slow heat dissipation speed. At the same time, it cannot lower the chip below the ambient temperature, and is not suitable for high temperature working environments

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