It is expected to solve the problem of LED street lamp cooling

As of yesterday, the number of patented high-power LED street lamps produced by Suzhou Weiyuan New Materials Co., Ltd. in Tongli Town, Wujiang, has reached 18 patent applications, of which 9 are invention patents.

This is a seemingly ordinary white semiconductor chip, the size, thickness and tofu dry. The only difference is that one side of the chip is connected with one red and one black wire. If these two wires are connected to a positive and negative DC power supply, the chip, which was originally at a normal temperature, will quickly cool down and the surface will condense into water droplets. The other side is hot and even hot. "This chip is called the integrated temperature balancer and is the core of heat dissipation for LED street lamps." Wei Wei, chairman of Weiyuan New Materials, introduced that when the LED lamp is lit, it will generate a high temperature of 90°C. The traditional LED street lamp production process will be The beads are mounted on an aluminum substrate and the lamp beads are cooled by heat conduction. However, due to environmental constraints, the cooling effect is not obvious.

LED lights will rapidly age at high temperatures for a long period of time, resulting in large light decay.

In order to enhance the heat dissipation effect, many LED lamp manufacturers use their brains to increase the heat dissipation area, which makes the aluminum radiator more and more bulky. Currently, a 220W high-power LED street lamp commonly used in the market weighs 18 kilograms and consumes a large amount of mineral resources.

The Weiyuan new materials developed by the semiconductor electronic chip, the traditional passive cooling into active cooling, 90 °C lamp beads contact the chip after the cold surface, cold and heat energy to quickly neutralize, so that the lamp temperature is always maintained at 60 °C below. "After 13,000 hours of continuous testing, the LED light decay below 60°C is 0."

A piece of dried tofu chips, why power will become cold after one side? Gu Wei said that the key lies in the chip inside a lot of grain size semiconductor particles. These particles are made by sintering rare earth with more than 10 kinds of rare metals. The raw materials are very common in China, but they were formulated for 7 years.

For use with the chip, there is also a heat pump radiator and an isothermal aluminum substrate. In the production of LED street lights, the first LED lights through the grid matrix circuit is installed on a high conduction temperature aluminum substrate, and then determine the number of chips and heat sinks according to the size of the LED lamp power to ensure that the lamp board temperature is always controlled within 60 °C Completely solve the problem of high-power LED light failure, improve the service life. At the same time, the total weight of the street light can be reduced by more than 70%.

Xia Yaoding, executive vice president of Weiyuan New Materials, introduced that together with the invention patents and utility model patents, the high-power LED street lamps they produced had 18 patents. At the same time, these core technology products for heat dissipation can be applied to compressor-less home air conditioners, high-efficiency automotive LED fog lamps, and notebook CPU heat dissipation, as long as they are slightly improved, bringing revolutionary breakthroughs to traditional electronic products.