Weiyuan New Materials develops semiconductor chips to solve the problem of LED light decay

A piece of white tofu is dried. After the positive and negative currents are turned on, the single-sided temperature can quickly drop below 0 °C in 90 seconds. If this piece of tofu is used for LED street lamp cooling, it can ensure that the working temperature of the lamp bead is below 60 °C, completely solve the problem of LED light decay and improve the life of street lamp. As of yesterday, the high-power LED street lamps produced by Suzhou Weiyuan New Materials Co., Ltd. in Tongli Town, Wujiang have 18 patent applications, 9 of which are invention patents.
This is a seemingly ordinary white semiconductor chip that is about the same size and thickness as tofu. The only difference is that one side of the chip is connected with two wires, one red and one black. If the two wires are connected to the positive and negative DC power supply, the chip that is originally in the normal temperature state will rapidly cool down and the surface will condense into water droplets. The other side will be hot, even hot.
This chip is called a comprehensive temperature balancer and is the core for cooling LED street lights. Gu Wei, chairman of Weiyuan New Materials, introduced that when the LED light is on, it will produce a high temperature of 90 °C. The traditional LED street lamp production process is to install the lamp bead on the aluminum substrate, and cool the lamp bead by heat conduction, but by the environment. Constraint, the cooling effect is not obvious.
LED lamps will age rapidly under high temperature for a long time, resulting in a large light decay.
In order to enhance the heat dissipation effect, many LED lamp manufacturers are using their brains to increase the heat dissipation area, making the aluminum radiators larger and larger. At present, a 220W high-power LED street lamp commonly used in the market has a weight of 18 kg and consumes a large amount of mineral resources.

The semiconductor electronic chip developed by Weiyuan New Materials turns the traditional passive heat dissipation into active heat dissipation. After the 90°C lamp beads touch the ice-cold surface of the chip, the heat and cold energy can be quickly neutralized, so that the lamp working temperature is always maintained at 60. Below °C. After 13,000 hours of continuous testing, the LED light below 60 °C decayed to 0.

A chip with a large tofu, why does it become cold after being powered? Gu Wei said that the key lies in the size of many rice-sized semiconductor particles inside the LED chip. These granules are sintered from rare earths in combination with more than 10 rare metals. The raw materials are common in China, but they have been formulated for 7 years.

Used in conjunction with the chip, there is a heat pump heat sink and a temperature-dependent aluminum substrate. When making LED street lamps, first install the LED lights on the high-conductivity uniform temperature aluminum substrate through the grid matrix circuit, and then determine the number of chips and heat sinks according to the power of the LED lamps to ensure that the temperature of the lamp board is always controlled within 60 °C. It completely solves the problem of high-power LED light decay and improves the service life. At the same time, the total weight of street lamps can be reduced by more than 70.

Xia Yaoding, executive vice president of Weiyuan New Materials, introduced 18 patents for high-power LED street lamps produced together with invention patents and utility model patents. At the same time, these core technology products for heat dissipation can be applied to compressorless household air conditioners, high-efficiency automotive LED anti-fog lamps, notebook CPU cooling, etc., with a slight improvement, bringing revolutionary breakthroughs to traditional electronic products.

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