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Smearing apparatus for heat-conducting silicone grease layer and smearing method

A technology of thermally conductive silicone grease and positioning device, which is applied to devices and coatings that apply liquid to the surface. question

Inactive Publication Date: 2014-08-06
XIAN YONGDIAN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using a brush to apply thermal grease can not guarantee the uniformity of thermal grease, and secondly, there is no way to accurately control the thickness of thermal grease
Unsmooth thermal grease may cause cracking of the ceramic insulating substrate inside the module, resulting in module insulation problems

Method used

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  • Smearing apparatus for heat-conducting silicone grease layer and smearing method

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Embodiment Construction

[0021] The specific embodiment of the present invention discloses a thermally conductive silicone grease layer coating device, which is used for coating the thermally conductive silicone grease layer on the bottom plate of the IGBT module. The coating device includes:

[0022] A bearing seat has a bearing surface, and the IGBT module is supported on the bearing surface;

[0023] A printing template has a printing area, the printing area is located above the IGBT module, and a number of through holes are uniformly distributed on the printing area.

[0024] The embodiment of the present invention also discloses a method for applying the above-mentioned thermally conductive silicone grease layer application device, including:

[0025] s1. Fix the IGBT module with the bottom plate facing up on the bearing surface of the bearing seat;

[0026] s2, covering the printing area on the printing template above the bottom plate of the IGBT module;

[0027] s3. Apply thermal conductive s...

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Abstract

The invention discloses a smearing apparatus for a heat-conducting silicone grease layer. The smearing apparatus is used for smearing the heat-conducting silicone grease layer on the base plate of an IGBT module and comprises a bearing seat and a printing template, wherein the bearing seat has a bearing surface, the IGBT module is supported on the bearing surface, the printing template has a printing area which is located above the IGBT module, and a plurality of through holes are uniformly arranged in the printing area. The invention further discloses a smearing method of the smearing apparatus. According to the invention, smearing of the heat-conducting silicone grease layer on the base plate of the IGBT module is carried out through the printing template, the smeared heat-conducting silicone grease layer has good flatness, and thickness of the smeared heat-conducting silicone grease layer can be controlled.

Description

technical field [0001] The invention relates to a coating device and a coating method capable of obtaining a smooth heat-conducting silicone grease layer. Background technique [0002] IGBT (Insulated Gate Bipolar Transistor), an insulated gate bipolar transistor, is a composite fully-controlled voltage-driven power semiconductor device composed of BJT (bipolar transistor) and MOS (insulated gate field effect transistor), and has a MOSFET The advantages of high input impedance and low conduction voltage drop of GTR. The saturation voltage of GTR is low, the carrying current density is large, but the driving current is large; the driving power of MOSFET is small, the switching speed is fast, but the conduction voltage drop is large, and the current carrying density is small. IGBT combines the advantages of the above two devices, with low driving power and low saturation voltage. It has been more and more widely used in modern power electronics technology, and occupies a domi...

Claims

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Application Information

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IPC IPC(8): B05C13/02B05D1/32
Inventor 李君伟
Owner XIAN YONGDIAN ELECTRIC