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IGBT heat dissipation device of frequency-variable controller and method thereof

A frequency conversion controller and heat dissipation device technology, applied in the field of frequency conversion home appliances, can solve the problems of reducing and optimizing PCB board structure design, disadvantages, etc., to improve circuit reduction and optimization design, reduce overall design and use cost, reduce The effect of installation space

Inactive Publication Date: 2010-02-24
SHANDONG LONGERTEK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of power circuit structure allows the temperature of the IGBT node to be higher, but the six IGBTs need to be effectively installed and connected to the high-power radiator, which is not conducive to reducing and optimizing the structural design of the PCB board

Method used

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  • IGBT heat dissipation device of frequency-variable controller and method thereof
  • IGBT heat dissipation device of frequency-variable controller and method thereof
  • IGBT heat dissipation device of frequency-variable controller and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1, such as Figure 1 to Figure 3 As shown, the IGBT cooling device of the variable frequency controller includes a PCB board 2 on which six IGBT1 are installed. in,

[0029] The six IGBT1s are bridge-connected and directly soldered on the PCB 2, a layer of tin layer 3 is coated on both sides of the PCB 2, and several transparent holes penetrating through the PCB 2 are arranged on the PCB 2. Tin via 4.

[0030] The through-tin through hole 4 can play the role of circuit connection and heat conduction.

[0031] The source electrodes 11 of the six IGBTs 1 are all soldered to the tin layer on one side surface of the PCB 2 .

[0032] The source level 11 is directly welded to the PCB board 2 , which can play the role of fixing the IGBT, and at the same time, the larger contact area of ​​the source level 11 is used to improve heat dissipation efficiency.

[0033] Such as image 3 As shown, the solder layer of IGBT1 is the 310V voltage input end of the power circui...

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Abstract

The invention relates to an IGBT heat dissipation device of a frequency-variable controller and a method thereof. The device takes both IGBT heat dissipation efficiency and the circuit design cost ofa PCB board into consideration, and adopts a patched IGBT soldering and heat dissipation structure to directly solder IGBTs on the PCB board; and based on the characteristic that the sources of the IGBTs need to be connected, a metal plating on the surface of the PCB board is directly utilized to dissipate heat. Since the heat is dissipated by the metal plating on the surface of the PCB board, thecircuit of the PCB board can be simplified and optimized, meanwhile, the heat dissipation efficiency of the IGBTs can be improved, the space occupied by the heat dissipation device can be reduced, and the whole design and use cost of the frequency-variable controller can be reduced. The heat dissipation device mainly comprises the PCB board on which a plurality of IGBTs are assembled; the plurality of IGBTs are bridged together and directly soldered on the PCB board; and the metal plating used for dissipating the heat is plated on the surface of the PCB board on which the IGBTs are soldered.

Description

technical field [0001] The invention relates to a controller IGBT cooling device for frequency conversion household appliances and a method thereof, belonging to the field of frequency conversion household appliances. Background technique [0002] At present, the frequency conversion control system based on IGBT power devices is widely used in various frequency conversion household appliances. The frequency conversion controller can set a higher power IGBT, but the selection of its power tube installation and heat dissipation method is more critical. [0003] In order to reduce the installation space occupied by the frequency conversion controller circuit and reduce the cost of use, the power circuit of the existing frequency conversion controller mainly has the following two structural schemes: one is to use an integrated IPM module to form an inverter circuit, which integrates 6 IGBTs, drive circuit and protection circuit. The peripheral circuit structure of this type of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H01L23/34H05K7/20
Inventor 张景昌张永利胡文生马英华李敬恩
Owner SHANDONG LONGERTEK TECH CO LTD
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