Integrated end cover for polypropylene film capacitor

Abstract

The invention relates to an integrated end cover for a polypropylene film capacitor. The integrated end cover comprises a copper foil outgoing line, an explosion-proof block, a cover plate, an insulating bowl and a leading-out end, wherein the leading-out end is mounted in a center hole of the insulating bowl through a rivet and then is mounted in a corresponding stamping hole in the cover plate;the copper foil outgoing line is fixed by being inserted in a corresponding bayonet of the explosion-proof block; the leading-out end, the insulating bowl, the cover plate, the explosion-proof block and the copper foil outgoing line are fixed through stamping rivets and are connected into a whole, namely, the end cover of the capacitor; the copper foil outgoing line wraps the copper foil outgoingline in an insulating mode for insulating protection; the end cover is welded on the end surface of a capacitor element through the copper foil outgoing line; and the end cover is connected with the capacitor element by taking the copper foil outgoing line as a medium. According to the integrated end cover, the bad phenomena of thermal breakdown and the like of the capacitor can be reduced, so that the reliability of the long-term service life of the polypropylene film capacitor is improved; and moreover, the heat dissipation performance is better, and the temperature resistance is more excellent.

Description

technical field [0001] The invention relates to an integrated end cap for a polypropylene film capacitor, in particular to an insulating structure applied to a polypropylene film capacitor, and belongs to the technical field of capacitor elements. Background technique [0002] Polypropylene film capacitors have self-healing properties, non-polarity, low loss value, high stability, high reliability, and high safety performance, and are widely used in household appliances such as washing machines, air conditioners, and water pumps. [0003] With the development of the economy, the market demand for polypropylene film capacitors has been increasing day by day in recent years. However, due to the constraints of raw materials, capacitor structures and equipment, its output and performance cannot be greatly improved. In other words, the current polypropylene film capacitors can no longer meet the output and performance demands of these fields. Therefore, it is imperative to impro...

AI Technical Summary

Problems solved by technology

However, the performance breakthrough of the inner lead has faced a bottleneck period in recent years, and it has been unable to meet the performance requirements of capacitors in the field of household appliances.

At the same time, affected by the market, labor costs and raw material costs have increased significantly, which has also brought huge economic burdens to enterprises

In addition, limited by the shape and material of the tinned copper wire, during welding, the tinned copper wire does not stick to tin, resulting in difficult soldering, false soldering of the inner lead, and breakage of the inner lead during the use of the capacitor. The reliability of the long-term service life of propylene film capacitors has brought great hidden dangers

Due to the above limitations, the cylindrical tinned copper wire used in traditional polypropylene film capacitors has been difficult to meet the production and performance requirements of household appliances such as washing machines, air conditioners, and water pumps.

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