Electricity supply system for argon arc welding machine

Abstract

The invention discloses an electricity supply system for an argon arc welding machine, and relates to the technical field of steel part welding processing equipment. The electricity supply system comprises a lithium battery and a management system, wherein the management system comprises a charging and discharging control system and an output control system; the charging and discharging control system comprises a battery sampling circuit and a PID (Proportion Integration Differentiation) controller; the output control system comprises a voltage filtering circuit and a wave chopping circuit; through a regulation algorithm in the PID controller, collected voltage and current is calculated and is compared with practical reference power to obtain maximum charging power; and ideal maximum discharging power, reference maximum discharging power and regulation maximum discharging power are compared to obtain maximum discharging power, and the obtained charging power and discharging power can be more accurate. The lithium battery is subjected to voltage filtering, and the output of current and voltage required by welding can be realized through the wave chopping circuit to solve the problems that a circuit is complex and cost is high when an existing welding machine is additionally provided with the lithium battery.

Description

technical field [0001] The invention relates to the technical field of steel welding processing equipment, in particular to a power supply system of an argon arc welding machine. Background technique [0002] Argon arc welding technology is based on the principle of ordinary arc welding, using argon gas to protect the metal welding material, and through high current to make the welding material melt into a liquid state on the base material to be welded to form a molten pool, so that the welded metal and the welding material It is a welding technology that achieves metallurgical combination of materials. Since argon gas is continuously supplied during high-temperature fusion welding, the welding materials cannot be in contact with oxygen in the air, thereby preventing the oxidation of the welding materials. Therefore, stainless steel and iron metals can be welded. ;Usually the argon arc welding machine is powered by the mains or the addition of a lithium battery, and the main...

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Problems solved by technology

It can make the obtained charging power more accurate; at the same time, the ideal maximum discharge power, the reference maximum discharge power, and the adjusted maximum discharge power are compared through the adjustment algorithm of the PID controller, and the minimum power of the three is the maximum of the lithium battery. The discharge power can make the obtained discharge power more accurate and more in line with the actual situation of the battery; through the voltage filtering of the lithium battery, and then through the chopper circuit, the output of the current and voltage required for welding can be realized to solve the problem of current welding machines. The problems of complex circuits, high cost, serious waste and inconvenient portability in the installation of lithium batteries

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