Radiating fin and fin assembly

Abstract

The invention provides a cooling fin and fin component, where the former is composed of a sheet heat conduction material formed with notches, and the part of the material is bent to form a welding part for welding to a substrate; the latter is composed of a base slice and many cooling fins. The structures of the cooling fin and fin component can retain the stability of welding medium between the cooling fin and the substrate, thus able to improve the welding quality and effectively reduce contact thermal resistance between the cooling fin and the substrate.

Description

technical field [0001] The invention provides a cooling fin and a fin assembly, in particular a fin and a fin assembly which can effectively maintain the stability of a welding medium during welding and assembly. Background technique [0002] Today's heat dissipation fins are mostly manufactured by aluminum extrusion. However, the ratio of height to thickness of heat dissipation fins manufactured by aluminum extrusion process will be limited by the current processing technology, and the heat dissipation performance cannot be further improved, so it is difficult to meet Today's electronic components have greatly increased heat dissipation requirements. Therefore, it can be considered to be replaced by welding assembly. [0003] FIG. 1A is a perspective view showing the structure of a conventional heat dissipation fin 102 used in a soldering process. As shown in FIG. 1A , the heat dissipation fin 102 is formed by bending a sheet of heat-conducting material into an L-shaped c...

AI Technical Summary

Problems solved by technology

As shown in FIG. 1C , in the existing method of combining heat dissipation fins 102 by soldering, because the welding parts 102b of each heat dissipation fin 102 are closely adjacent to each other, the flux 106 in the solder under the welding parts 102b will be affected. Adjacent fins (such as the A-A surface shown in the figure) are blocked and cannot escape, but can only flow out in a small amount from the shorter side of the welding part 102b, causing a large amount of flux 106 to remain in the fin welding part after welding The welding surface between 102b and the substrate 104 makes it difficult to control the stability of the welding medium, which not only affects the welding quality but also significantly increases the contact thermal resistance between the cooling fins and the substrate

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