Jig and method for welding single tubes of single-phase photovoltaic grid-connected inverter

Abstract

The invention discloses a jig and a method for welding single tubes of a single-phase photovoltaic grid-connected inverter. The single tube welding jig comprises a jig body, a positioning device arranged on the jig body and used for fixing a main power amplifier board and a pressing mechanism arranged on the positioning device and used for pressing the main power amplifier board, wherein the pressing mechanism comprises a single tube pressing plate, a locking assembly used for pressing the single tube pressing plate onto the positioning device, a tube pressing vacant site arranged on the single tube pressing plate, and a plurality of tube-pressing accommodating grooves arranged in the inner side of the single tube pressing plate; the tube-pressing accommodating grooves are formed at the periphery of the tube pressing vacant site. The main power amplifier board is fixed by the positioning device, the single tubes are put, the main power amplifier board is pressed by the locking assembly and the single tube pressing plate, and welding is performed finally, so that the single tubes are welded and mounted in a unified manner, and the whole jig has the advantages of high mounting and positioning accuracy and high reliability.

Description

technical field [0001] The present invention relates to the technical field of single-tube welding, and more specifically relates to a single-tube welding jig and welding method for a single-phase photovoltaic grid-connected inverter. Background technique [0002] In the photovoltaic new energy industry, most domestic and foreign households use single-phase 220v power supply mode. The research and development of single-phase inverters is mainly to meet the needs of household solar power generation and integration into the national grid equipment . Among them, the main power board of the single-phase inverter is the core component, and the core part of the main power board is the inverter circuit and the boost circuit, and most inverter circuits use a single tube (that is, a MOS tube) as Components, so the installation position and heat dissipation effect of single-tube components are very important. In the prior art, the installation of a single pipe is mostly done manuall...

AI Technical Summary

Problems solved by technology

In the prior art, the installation of a single tube is mostly done manually, and its installation position and accuracy are basically observed by the naked eye of the worker, resulting in a decrease in the reliability of the installation.

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