Three-phase inverter power module based on bidirectional spiral flow channel water-cooled heat dissipation substrate

Abstract

The invention relates to the inversion power module and particularly relates to a three-phase inversion power module based on a two-way spiral flow channel water cooling heat radiation substrate. The three-phase inversion power module based on the two-way spiral flow channel water cooling heat radiation substrate solves problems that a present heat radiation flow channel is not reasonable, poor in heat radiation, big in size and weight and not easy to perform fast plug-pull installation. In the scheme of the three-phase inversion power module based on the two-way spiral flow channel water cooling heat radiation substrate, a three-phase inversion power circuit is arranged on the two-way spiral flow channel water cooling heat radiation substrate; a T-shaped composite mother board and a drive board are stacked on the two-way spiral flow channel water cooling heat radiation substrate; a support seat is arranged in the front edge of the two-way spiral flow channel water cooling heat radiation substrate; water connectors and fixed blocks are arranged on two sides of the two-way spiral flow channel water cooling heat radiation substrate; and screw rods and a handle go through the fixed blocks. The advantages of the three-phase inversion power module based on the two-way spiral flow channel water cooling heat radiation substrate has advantages that flow resistance of a cooling liquid is small and heat radiation is uniform; the water connectors are easy to mount and dismount without affecting processing accuracy; and the layout is not affected by the flow channel; circuit electric inductance is small and working reliability of a thermal performance power module is high. Furthermore, the three-phase inversion power module based on the two-way spiral flow channel water cooling heat radiation substrate is compact in layout, small in volume and light in weight, saves cost; the interfaces are preposed in sequence, which is easy to maintain and saves external fast connection device; and a driving signal is high in anti-interference.

Description

technical field [0001] The invention relates to an inverter power module, in particular to a three-phase inverter power module based on a bidirectional spiral channel water-cooled heat dissipation substrate. Background technique [0002] In recent years, traction converters for AC drive electric locomotives are developing towards high power, high integration, and light weight, which leads to a sharp increase in the power dissipation density of the system. The power module is the core component of the entire converter, so High integration and lightweight design of power modules are very necessary. At present, most of the power modules are limited by the structure of the heat sink, and the layout of power devices, cooling interfaces, electrical interfaces, and mechanical interfaces cannot be changed at will. The overall structure of the power module is bloated, the overall size is large, and the weight is heavy. This is not convenient for quick plugging and installation of th...

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Problems solved by technology

[0003] The invention solves the problems of unreasonable layout, poor heat dissipation performance, large size and weight, and difficult quick plug-in and installation of the existing inverter power module caused by the limitation of the heat dissipation flow channel structure, and provides a water-cooled heat dissipation substrate based on a bidirectional spiral flow channel The three-phase inverter power module

The two-way spiral flow channel maximizes the use of the space on the heat sink plate surface, and there are no sharp or right angles. The flow channel is smooth. The flow rate of the coolant is from the outer ring to the inner ring, and then from the inner ring to the outer ring. The resistance encountered is uniform and does not change much. , which perfectly solves the problems of uneven overall heat dissipation of the heat sink, the surface temperature of the heat sink changes with the flow direction of the coolant, the large flow resistance is not easy to dissipate heat, and the layout of power devices is limited by the flow channel, etc.

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