Super Farad capacitor type resistance welding machine and capacitor independent and balanced management method thereof

Abstract

The invention discloses a super Farad capacitor type resistance welding machine and a capacitor independent and balanced management method thereof. The capacitor type resistance welding device comprises an anode welding arm, a cathode welding arm, a Farad capacitor bank and an electric pulse forming module. The Farad capacitor bank comprises a first Farad capacitor and a second Farad capacitor connected in series, and capacitor balanced charging modules are connected to the first Farad capacitor and the second Farad capacitor correspondingly. The capacitor balanced charging modules comprise direct current depressurization constant current modules, constant current controllers and constant voltage controllers. The first Farad capacitor and the second Farad capacitor in the Farad capacitor bank are independently charged in a balanced manner, thus, a good charging balance effect is achieved, maximum stored energy is charged into serial capacitor modules within a short time, the balance effect of potential of the two capacitors is achieved, and meanwhile the extreme problem that a single capacitor is damaged probably by capacitor monomer potential voltage variation generated when the serial capacitor modules are charged in series is solved.

Description

technical field [0001] The invention relates to a super farad capacitor type resistance welding machine and a capacitor independent balancing management method thereof. Background technique [0002] A supercapacitor is an electrochemical device that stores energy by polarizing an electrolyte. At present, because of its long life, safe charging and large capacity, farad capacitors are increasingly paid attention to when applying capacitors to pulse welding machines. [0003] The supercapacitor resistance welding machine discharges through the capacitor and transmits it to the welding arm for welding. However, when multiple capacitors are connected in series, if the voltage on each capacitor is inconsistent, the output energy will be reduced. The problem of shortened service life occurs; and the extreme problem of single capacitor damage may occur due to the voltage difference of the capacitor cells that occur when the series capacitor module is charged in series, and it is n...

AI Technical Summary

Problems solved by technology

[0003] The supercapacitor resistance welding machine discharges through the capacitor and transmits it to the welding arm for welding. However, when multiple capacitors are connected in series, if the voltage on each capacitor is inconsistent, the output energy will be reduced. The problem of shortened service life occurs; and the voltage difference of the capacitor cells that occurs when the series capacitor module is charged in series may cause extreme problems of damage to a single capacitor, and it is necessary to maintain the consistency of capacitor charging

Among them, the replacement of the electric pulse forming module in the prior art is more troublesome, which is not conducive to rapid installation and replacement

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