Heat dispersion structure of power unit electrolytic capacitor of high-power inverter

Abstract

The invention relates to a heat dispersion structure of a power unit electrolytic capacitor of a high-power inverter, which is fixedly connected with an electrolytic capacitor. The heat dispersion structure comprises a radiator and an insulating thermal pad, wherein, the radiator is provided with a plurality of parallel tins, the electrolytic capacitor is installed on one side of the radiator without the tins and is attached to the radiator, and the insulating thermal pad is arranged between the electrolytic capacitor and the radiator. The heat dispersion structure has the advantages that the electrolytic capacitor is installed on the rear of tins of the radiator to conduct heat to the radiator, so heat is dispersed by the radiator and temperature rise of the electrolytic capacitor is greatly reduced, and moreover, wave surfaces of the tins of the radiator are also favorable for heat dispersion; temperature is reduced by more than 5 DEG C through tests, the reliability of the inverter is improved, and the service life of the inverter is prolonged.

Description

technical field [0001] The invention relates to an installation structure of an electrolytic capacitor and a radiator, in particular to a heat dissipation structure of a power unit electrolytic capacitor of a high-power inverter. Background technique [0002] In the field of power electronics, especially in high-power (above 75KW) inverters, a large amount of heat is often generated due to power consumption during operation, and the accumulation of heat often leads to shortened product life and unstable product characteristics. . With the increasing number of capacitors in the main power part of the product, the heat dissipation of the capacitor itself is far from meeting the heat dissipation requirements, thus affecting the life of the product. [0003] At present, the electrolytic capacitors of the power units of high-power inverters on the market generally rely on the contact between the electrolytic capacitor itself and the air to dissipate heat. Contents of the inven...

AI Technical Summary

Problems solved by technology

[0002] In the field of power electronics, especially in high-power (above 75KW) inverters, a large amount of heat is often generated due to power consumption during operation, and the accumulation of heat often leads to shortened product life and unstable product characteristics.

With the increasing number of capacitors in the main power part of the product, the heat dissipation of the capacitor itself is far from meeting the heat dissipation requirements, thus affecting the life of the product

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