Intelligent High-Speed Photovoltaic Road Signal Lamp Based on Intelligent Control of Nano-Composite Ceramic Substrate

Abstract

At present, the metal substrate manufacturers in the world have developed a variety of different types of metal substrates. Metal substrates have now become the mainstream varieties of heat dissipation substrates for signal lamps. This research mainly discusses intelligent high-speed photovoltaic road signal lights based on intelligently controlled nano-composite ceramic substrates. The electroless copper plating method is used to densify the metalized AlN ceramic packaging substrate, and the metallization layer of the AlN ceramic packaging substrate by electroless copper plating is studied when a single complexing agent and a composite complexing agent are added to the electroless plating solution. And its performance impact. At room temperature, a laser is used to quickly scan the aluminum nitride ceramic substrate coated with a metal tungsten layer to achieve ceramic metallization and a firm connection between the ceramic and the metal. The surface, interface macroscopic and microscopic morphology, material composition and phase composition of the prepared W/AlN ceramic substrate were systematically analyzed, and the thermal conductivity and bonding strength of the metalized substrate were tested. The laser and the material were used. The nature of the interaction studies a new method of AlN ceramic metallization. The reasons for the junction temperature of photovoltaic road signal lamps and several common methods and physical mechanisms for measuring the junction temperature of semiconductor devices are reviewed. The forward voltage method is used to measure the voltage-temperature coefficient of high-power photovoltaic road signal lamps on AlN heat sink substrates with different metal transition layers. Tested with junction temperature, and finally discussed the influence of different metal transition layers on the heat dissipation performance of AlN heat sink substrate. When the sintering temperature reaches 1150℃, the bonding strength reaches the highest 9.7kg/mm2, and when the sintering temperature exceeds 1150℃, the bonding strength begins to decrease again. This research will effectively improve the reliability and lifespan of high-power smart high-speed photovoltaic road signal lights.