Liquid-cooling cold plate

Abstract

The invention discloses a liquid-cooling cold plate, which comprises a liquid inlet connector, a liquid outlet connector, an upper cover plate, frame strip seal, fins, pad blocks and a bottom board, wherein the pad blocks and the fins are arranged in the frame strip seal; the upper cover plate and the bottom board are connected to the two sides of frame strip seal through vacuum brazing to form a sealed heat exchange cavity; the two sides of the pad blocks are connected with the upper cover plate and the bottom board through vacuum brazing respectively; the liquid inlet connector and the liquid outlet connector are connected with the upper cover plate through vacuum brazing; and the inner side surface of the frame strip seal or / and the outer side surfaces of the pad blocks contacted with a heat exchange medium are respectively provided with a groove. The liquid-cooling cold plate is simple in structure, low in cost, high in heat exchange efficiency, good in brazing process, high in welding finished product rate, more beautiful in appearance, small in flow dead zone and good in temperature uniformity.

Description

technical field [0001] The invention belongs to the technical field of cooling and heat dissipation devices, and in particular relates to a liquid-cooled cold plate. Background technique [0002] With the increasing integration of electronic components and the increasing heat flux density, the traditional air-cooled heat dissipation method can no longer meet the heat dissipation requirements in many cases, and liquid-cooled cold plates have begun to be widely used. The current electronic liquid cold plate has a tube-inserted type, a perforated type and an inner fin type. Among them, the former two have the characteristics of heavy weight, large thickness and poor heat transfer effect. With the increasing integration of electronic components, the heat flux density is getting higher and higher, and the heat dissipation requirements for liquid-cooled cold plates are also getting higher and higher. Due to the advantages of light weight and good heat transfer effect, the inner f...

AI Technical Summary

Problems solved by technology

However, the traditional structure of the inner-finned cold plate inlet and outlet joints is connected with the cold plate by argon arc welding, and the appearance of the weld is poor, which is prone to leakage

In addition, when the cold plate is brazed as a whole, it is difficult to braze, the welding yield is low, and the heat transfer effect of the backing plate and the frame seal is poor, resulting in poor overall temperature uniformity of the cold plate

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