Definition and application of brazed liquid cold plate

Brazed liquid cold plate is a widely used cooling element, which is mainly used for heat dissipation of high power electronic components and semiconductor devices. It consists of a plurality of thin wall spot-welded dense bellows inside, brazed with external alloy material, and the inner flow guide body is water.

In modern industry, brazed liquid cold plates are widely used in high power electronic components, semiconductor lasers, semiconductor compressors, power electronic components, aviation engines and other fields.

Second, the manufacturing process and technical points of brazed liquid cold plate

1. Brazing material selection

Brazing materials should have good mechanical properties and corrosion resistance, commonly used brazing materials include aluminum alloy, silver aluminum solder, silver copper solder and so on.

2. Brazing process

(1) Cleaning treatment: clean the brazing surface to remove impurities, oxides, etc.

(2) Install the bellows: Install the bellows inside the water cooling plate.

(3) Fill brazing material: fill brazing material at the brazing position around the bellows.

(4) Heating welding: the brazing material is heated to the melting point, so that the two materials are welded together.

(5) Sealing: Seal the liquid cold plate that has been brazed to avoid leakage.

3. Sealing quality inspection

The sealing of pipe is a key link in the manufacture of brazed liquid cold plate. It is necessary to carry out hydraulic test to verify its sealing performance. At the same time, it is also necessary to carry out mechanical properties, corrosion resistance and other performance tests to ensure that the quality of brazed liquid cold plate meets the requirements.

Third, brazed liquid cold plate characteristics and advantages and disadvantages

Step 1: Characteristics

(1) High cooling efficiency: brazed liquid cold plate is a plurality of thin-walled bellows, which can greatly increase the heat dissipation area and improve cooling efficiency.

(2) Uniform heat dissipation: Because the corrugated pipe shape can make the cooling water flow evenly, the water temperature difference is small, so that the heat dissipation is uniform.

(3) Simple structure: The forming process of the brazed liquid cold plate is simple and the production efficiency is high.

Step 2: Pros and cons

(1) Advantages: high cooling efficiency, uniform heat dissipation, simple structure, high production efficiency.

(2) Disadvantages: The manufacturing process is more complex, the quality of the sealing tube needs to be paid attention to, and the cost of brazed liquid cold plate is higher.

Conclusion

In general, the brazed liquid cold plate has the characteristics of high efficiency, uniformity, simplicity, etc., and is widely used. In the manufacturing process, it is necessary to pay attention to the selection of brazing materials, brazing process and sealing quality, and carry out strict quality inspection.