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A power module with an electrode covered with an insulating layer

A technology for power modules and insulating layers, applied in circuits, electrical components, electrical solid devices, etc., can solve the problems of electrode arcing and burning, loss of the whole system of the installed module, and danger, and achieve the effect of improving safety.

Active Publication Date: 2019-06-04
YANGZHOU GUOYANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of the module, the chip may explode due to some reasons, and the explosion will produce a large amount of conductive gas. There is no insulation protection between the positive electrode, negative electrode and the intermediate electrode. When the conductive gas generated by the explosion is conducted When any two electrodes are used, electrode arcing and burning will occur, which will cause losses and even danger to the whole system where the module is installed.

Method used

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  • A power module with an electrode covered with an insulating layer
  • A power module with an electrode covered with an insulating layer
  • A power module with an electrode covered with an insulating layer

Examples

Experimental program
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Embodiment 1

[0015] Embodiment 1: A kind of power module of electrode cladding insulating layer, such as figure 1 As shown, it includes a chip assembly 1, an output electrode 2 and a plurality of power supply electrodes. Taking a three-level power module as an example, the multiple power supply electrodes include an intermediate electrode 3, a positive electrode 4 and a negative electrode 5. In the present invention, the power supply electrode It is also possible to include only positive and negative electrodes. Depend on figure 1 It can be seen that the middle electrode 3 , the positive electrode 4 and the negative electrode 5 are relatively close to each other.

[0016] Such as figure 2 As shown, the middle electrode 3, the positive electrode 4 and the negative electrode 5 all include a horizontally arranged lead-out portion 6, a main body portion 7 vertically connected to the lead-out portion, and a contact portion, and the contact portion includes a corner section 8, a longitudinal ...

Embodiment 2

[0018] Embodiment 2: A kind of power module of electrode cladding insulating layer, such as figure 1 As shown, including the chip assembly 1, the output electrode 2 and the intermediate electrode 3, the positive electrode 4 and the negative electrode 5, the distance between the intermediate electrode 3, the positive electrode 4 and the negative electrode 5 is relatively close.

[0019] Such as figure 2 As shown, the middle electrode 3, the positive electrode 4 and the negative electrode 5 all include a horizontally arranged lead-out portion 6, a main body portion 7 vertically connected to the lead-out portion, and a contact portion, and the contact portion includes a corner section 8, a longitudinal plate 9 and a The outer connection end 10 connected to the longitudinal plate, the corner section 8 is vertically connected to the bottom of the main body 7 , the corner section 8 is connected to the longitudinal plate 9 through the corner arc wrapping 11 , and the outer connectio...

Embodiment 3

[0021] Embodiment 3: A kind of power module of electrode cladding insulating layer, such as figure 1 As shown, including the chip assembly 1, the output electrode 2 and the intermediate electrode 3, the positive electrode 4 and the negative electrode 5, the distance between the intermediate electrode 3, the positive electrode 4 and the negative electrode 5 is relatively close.

[0022] Such as figure 2 As shown, the middle electrode 3, the positive electrode 4 and the negative electrode 5 all include a horizontally arranged lead-out portion 6, a main body portion 7 vertically connected to the lead-out portion, and a contact portion, and the contact portion includes a corner section 8, a longitudinal plate 9 and a The outer connection end 10 connected to the longitudinal plate, the corner section 8 is vertically connected to the bottom of the main body 7 , the corner section 8 is connected to the longitudinal plate 9 through the corner arc wrapping 11 , and the outer connectio...

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Abstract

The invention provides a power module with an electrode covered with an insulating layer, which includes a chip assembly, an output electrode and a plurality of power supply electrodes, at least one surface of the power supply electrode is provided with an insulating layer. The present invention arranges an insulating layer on the electrode surface of the power module, even if the chip explodes, it is not easy to conduct any two of the electrodes to cause dangerous situations such as electrode arcing and module burning, thereby improving the safety of the module.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to a power module with electrodes covered with insulating layers. Background technique [0002] The power module is a power switch module packaged by power electronic devices such as MOS transistors (metal oxide semiconductors), IGBTs (insulated gate field effect transistors), and FRDs (fast recovery diodes) according to certain functions. Power conversion in various occasions such as automobiles, photovoltaic power generation, wind power generation, and industrial frequency conversion. [0003] In some existing power modules, the distances between multiple power supply electrodes are very close. Taking a three-level power module as an example, the distances between the positive electrode, the negative electrode and the middle electrode are very close, and the distance between the three power supply electrodes and the The distance between the chip sets below is also very close. Du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L23/492
CPCH01L23/492H01L2224/49111H01L2924/19107H01L2224/48139
Inventor 滕鹤松徐文辉王玉林
Owner YANGZHOU GUOYANG ELECTRONICS CO LTD