Method for manufacturing plate type heat pipe with ultrasonic welding

Abstract

The ultrasonic welding process for making plate heat pipe includes the following steps: 1. ultrasonically welding capillary structure to one of the upper plate and the lower plate and superposing these two plates with the capillary structure in between; and 2. sealing the plates with the capillary structure inside. The ultrasonically welded plate heat pipe has high bond strength, high tightness, lowered heat resistance and high heat dissipating effect, and shortened production process.

Description

technical field [0001] The invention relates to a method for manufacturing a flat heat pipe, in particular to a method for manufacturing a flat heat pipe using ultrasonic welding. Background technique [0002] Since the integration density of integrated circuit components such as a central processing unit (CPU) continues to increase, the heat generation density thereof also continues to increase. If the heat cannot be effectively dissipated, the working performance of the components will be affected. [0003] Under the trend that portable electronic devices are becoming thinner, thinner and smaller, the problem of heat dissipation is becoming more and more serious, and general heat dissipation devices are gradually facing the bottleneck that it is difficult to improve the heat dissipation effect. [0004] Therefore, the emergence of flat heat pipes can be used as a good heat dissipation device for portable electronic devices in due course. [0005] The operating principle o...

AI Technical Summary

Problems solved by technology

In the production process of this kind of flat heat pipe, whether the connection between the finer mesh and the thicker mesh metal copper mesh is accurate will affect the heat conduction between the metal copper mesh, and then affect the heat dissipation effect of the flat heat pipe

[0011] In addition, the use of general diffusion bonding is also easily affected by the flatness of the pressure-applying jig.

If the flatness of the jig is not good, it is easy to cause poor lamination between the components at the press joint of the jig, resulting in insufficient strength and tightness after diffusion bonding, resulting in deformation of the components at the position and gaps , will also increase the thermal resistance and reduce the cooling effect

[0012] This shows that the above-mentioned existing flat heat pipe manufacturing method obviously still has inconvenience and defects in the manufacturing method and use, and needs to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time. This is obviously a problem that the relevant industry is eager to solve

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