A power module provided with an insulating partition

Abstract

A power module provided with an insulating partition provided by the present invention includes a chip assembly, an output electrode and a power supply electrode, and each power supply electrode includes an electrode lead-out part, an electrode main body connected to the electrode lead-out part, and an electrode connected to the electrode main body The contact portion, the electrode contact portion is connected to the chip assembly, and also includes an insulating spacer, the insulating spacer includes a main body of the insulating spacer, and the main body of the insulating spacer extends toward the chip assembly on a side close to the electrode contact portion. The insulating spacer extension part and the insulating spacer main body are arranged between the electrode main body and the chip assembly. The present invention can separate the conductive gas generated by the explosion from the electrodes when the chip explodes, thereby preventing any two electrodes from conducting and causing dangerous situations such as electrode arcing and module burning, and 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 provided with insulating partitions. 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 distance between multiple power supply electrodes is very close. Take the three-level power module as an example, such as figure 1 As shown, it is an existing power module, including a chip set 1, an output electrode 2, an intermediate electrode 3, a positive electrode 4, and a negative electrode 5, and the distance between the intermediate electrode 3, the positive...

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.

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