Device for coating heat-conducting silicone grease on radiation surface of insulated gate bipolar translator (IGBT) module and related coating method

Abstract

The invention relates to a device for coating heat-conducting silicone grease on the radiation surface of an IGBT module, which comprises a mesh plate and a mesh leveling tool, wherein the mesh plate is provided with a mesh area which is used to be tightly jointed on the radiation surface of the IGBT module; the mesh leveling tool is used in combination with the mesh area so that the meshes in the mesh area can be leveled by the heat-conducting silicone grease when the heat-conducting silicone grease is coated; and preferably, the meshes are in completely different sizes. The device also comprises an upright post and a connecting block, wherein the connecting block is arranged on the upright post in a manner of being capable of moving up and down; and the mesh plate is rotationally arranged on the connecting block. The invention also provides a method for coating heat-conducting silicone grease on the radiation surface of the IGBT module. The device for coating heat-conducting silicone grease on the radiation surface of the IGBT module is smartly designed and has a simple structure. When the device is used, the coating quality of the heat-conducting silicone grease can be assured, the service life of the IGBT module can be prolonged, the operation is convenient, the working efficiency can be improved, and the waste of the heat-conducting silicone grease is reduced. The device is suitable to be widely promoted and used.

Description

technical field [0001] The present invention relates to the technical field of thermally conductive silicone grease coating, in particular to the technical field of coating thermally conductive silicone grease on the cooling surface of an IGBT module, in particular to a device and a related coating method for coating thermally conductive silicone grease on the cooling surface of an IGBT module. Background technique [0002] The service life of the IGBT module depends on the quality of its own heat dissipation. In the design, the bottom plate is connected with the heat sink, and the gap is coated with thermal conductive silicone grease. Thermally conductive silicone grease has excellent thermal performance, excellent stability, temperature resistance and low exudation. It can effectively dissipate heat, and export the heat generated by components by filling or coating. The installation surface finish of the heat sink should be ≤10μm. If the surface of the heat sink is uneve...

AI Technical Summary

Problems solved by technology

[0010] 1. Coating thickness and uniformity cannot be guaranteed;

[0011] 2. During the coating process, thermal conductive silicone grease is easy to enter the installation hole of the IGBT module, changing the tightening torque value of the bolt and affecting the installation quality;

[0012] 3. Insufficient application of pressure and defoaming causes a small amount of air to be entrained in the thermally conductive silicone grease. After installation, there is no thermally conductive silicone grease on the bottom plate of the IGBT module, which seriously affects the heat dissipation quality of the IGBT module.

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