Heat dissipation device applied to middle and high voltage inverter

Abstract

The invention provides a heat dissipation device which is suitable for carrying out heat dissipation on a plurality of heating elements in a middle and high voltage inverter. The heat dissipation device comprises a heat dissipation substrate, at least a set of heat pipes and a plurality of cooling fins, wherein at least one surface of a first surface and a second surface of the heat dissipation substrate is provided with the heating elements, and the set of heat pipes comprise a plurality of heat pipes. Each heat pipe comprises an evaporation segment and a condensation segment, and the evaporation segment is buried in an inner layer of the heat dissipation substrate to absorb heat from the heating elements. The plurality of cooling fins are arranged to be intersected with the heat pipes and fixedly connected with the condensation segments of the heat pipes, and therefore heat released by the condensation segments is transferred to the air. Moreover, contact portions between the set of heat pipes and the plurality of cooling fins are arranged in a triangle and intercrossing mode. A plurality of power devices in the inverter are placed on at least one surface of the heat dissipation substrate, and a plurality of sets of heat pipes are buried in the inner layer of the heat dissipation substrate. Moreover, the contact portions between the set of heat pipes and the plurality of cooling fins are arranged in a triangle and intercrossing mode so that heat dissipation efficiency of each power device can be effectively improved.

Description

technical field [0001] The invention relates to a heat dissipation device, in particular to a heat dissipation device for medium and high voltage frequency converters. Background technique [0002] At present, in many power electronic circuits, the application of medium and high voltage frequency converters is more and more extensive. It is a power control device that uses the turn-on and turn-off of semiconductor power devices to change the frequency. speed, changing power factor, overcurrent / overvoltage / overload protection and other functions. However, when these power devices are frequently switched between on and off, high heat energy is often generated, so it is necessary to set up a corresponding radiator to effectively dissipate the power devices, thereby ensuring the normal operation of the medium and high voltage inverter. [0003] Generally speaking, radiators mainly include: flat radiators, parallel rib radiators and interdigitated radiators, among which flat rad...

AI Technical Summary

Problems solved by technology

On the other hand, the large distance between power devices will increase the electrical connection distance, resulting in increased leakage inductance and low efficiency, which will also adversely affect the performance and life of power devices

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