IPM power module with compact structure

Abstract

The invention discloses a compact-structure IPM power module, and the module comprises an insulating substrate disposed on a bottom plate, and the insulating substrate is provided with a power circuit. The module further comprises a control circuit board positioned above the insulating substrate and a shell fixed on the bottom plate, terminals are arranged on the periphery of the shell, the tail parts of the terminals are inserted into connecting holes correspondingly formed in the periphery of the control circuit board, and the control circuit board are fixed and electrically connected; meanwhile, the head parts of the terminals extend out of the shell to be electrically connected with an external circuit; and the control circuit board is electrically connected with the insulating substrate through needle-shaped electrodes. According to the IPM power module with the compact structure, the PCB with an integrated control and evaluation logic unit is added, and the PCB is supported and fixed only by the terminals, so that the shell structure is simplified, and the process difficulty is reduced. The single insulating substrate forms an electrical loop, electrical performance testing can be carried out, defective chips are screened out in advance and replaced, the failure and scrapping of the whole module are avoided, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of power electronic power modules, in particular to a compact IPM power module. Background technique [0002] Power electronics technology occupies a very important position in today's fast-growing industrial field. As a representative of power electronics technology, power electronics power modules have been widely used in electric vehicles, photovoltaic power generation, wind power generation, industrial frequency conversion and other industries. With the rise of my country's industry, power electronics power modules have a broader market prospect. [0003] At present, power electronic power modules are gradually developing in the direction of integration and intelligence, and IPM modules emerge as the times require. Compared with the standard power module, the IPM module adds an additional control and evaluation logic unit, which is integrated on the PCB inside the power module. [0004] The IPM power modules lau...

AI Technical Summary

Problems solved by technology

[0008] At present, the IPM modules on the market can only be tested for relevant electrical performance after the module packaging is completed. If the failure is found, it will directly lead to the scrapping of the entire module, causing unnecessary losses and waste.

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