X2 safety capacitor based on cross line suppression breakthrough performance and preparation process of X2 safety capacitor

Abstract

The invention discloses an X2 safety capacitor based on a cross line suppression breakthrough performance and a preparation process of the X2 safety capacitor, and belongs to the field of capacitors.The technical scheme includes that the X2 safety capacitor comprises a capacitor body, a positive electrode power-on rod and a negative electrode power-on rod, and the positive electrode power-on rodand the negative electrode power-on rod are fixedly mounted at the lower end of the capacitor body. The safety capacitor made of zinc-aluminum metallized films with a thickened edge works in a two-terminal line directly crossing over two electric-power lines, a structure formed by laminating and winding double-surface and double-layer metallized films is an inner serially-connected structure, so that the safety capacitor thoroughly solves two technical problems that domestic and foreign research and development institutions cannot solve so far, wherein the two technical problems include that ametallized film capacitor easily has over-proof electric capacity or loss under long-term operation conditions, capacity stability is poor as capacity is reduced after self-healing is achieved, and high-current carrying capacity is weak as a metallized film layer is thin. Air between metallized film layers is effectively controlled and eliminated, and a key technological process and technique ofpackaging is improved.

Description

technical field [0001] The invention relates to the field of capacitor preparation, in particular to an X2 safety capacitor based on cross-line suppression breakthrough performance and a preparation process thereof. Background technique [0002] The metallized film X2 safety capacitor is directly connected between the two ends of the power line (L-N). It is used in the power filter. Its function is to filter the AC signal, suppress the differential mode interference, and pass the DC signal to the use circuit. , to reduce the electromagnetic interference generated by electrical appliances, electronic equipment or other interference sources, and is widely used in electronic circuits of household appliances, medical equipment, and industrial control systems. However, in the process of choosing a large number of X2 safety capacitors, capacitance attenuation and When the loss tangent value tgδ increases and degenerative failure occurs, the capacitance performance is no longer rel...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the existing technology, the object of the present invention is to provide a X2 safety capacitor based on cross-line suppression breakthrough performance and its preparation process. The safety capacitor made of edge-thickened zinc-aluminum metallized polypropylene film is It works directly across the lines at both ends of the two lines of the power line, and the capacity and loss are almost unchanged. The structure based on the double-sided double-layer metallized polypropylene film stacked winding structure is an internal series structure, thus completely solving the problem at home and abroad. Metallized film capacitors, which R&D institutions have not been able to solve so far, are prone to out-of-tolerance or loss of capacitance under long-term working conditions, and can lead to capacity reduction after self-healing, poor capacity stability and large load due to thin metallized film layers. The two major technical problems of weak current capability, effective control and elimination of air between metallized film layers and improvement of the key process and technology of packaging

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