A pulse current output device and output control method

Abstract

The invention discloses a pulse current output device. The pulse current output device comprises a front-end rectifying and filtering circuit, an inverter, a transformer and a rear-end rectifying andfiltering circuit; alternating current is inputted into the input end of the front-end rectifying and filtering circuit; the output end of the front-end rectifying and filtering circuit is connected with the input end of the inverter; the output end of the inverter is connected with the input end of the transformer; and the output end of the transformer outputs pulse current after the rear-end rectifying and filtering circuit performs rectifying and filtering. The current output device has the advantages of simple structure and accurate control; the current output device can output double-pulse current needed by aluminum alloy welding. According to the pulse current output device, output current can be conveniently and rapidly adjusted through a DSP main control module, and therefore, therequirement of double-pulse MIG welding is met.

Description

technical field [0001] The invention relates to the field of vehicle welding, in particular to a pulse current output device and an output control method. Background technique [0002] The automobile manufacturing process is complex. Although the traditional processing methods are relatively mature, the complex structure of the car body has many parts, the manufacturing process is long, the process equipment is complicated, and the production energy consumption is high, which is a common problem in the industry. [0003] The aluminum frame body technology of automobiles, especially new energy vehicles, can overcome these limitations of traditional steel body manufacturing. Aluminum frame body cars require special parts forming, body frame welding, outer cover parts injection molding and spraying, vehicle assembly testing and road test procedures. Compared with traditional processing methods, the improvement points are body parts forming, vehicle assembly testing and road tes...

AI Technical Summary

Problems solved by technology

Compared with the traditional aluminum alloy welding method, double-pulse MIG welding can speed up the welding speed and improve product production efficiency. However, the process of double-pulse MIG welding needs to control its energy input. If the energy control is inaccurate, it will cause accurate damage to the aluminum alloy. The influence of alloy welding and forming makes it difficult to meet product requirements

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