Filter capacitor

Abstract

The invention relates to a filter capacitor. The filter capacitor comprises a capacitor case, a capacitor core, two extraction electrodes and an insulated torque resistant plate, the two extraction electrodes are connected with upper and lower metal spraying layers of the capacitor core respectively in a welding mode through copper sheets, the extraction electrodes are provided with positioning portions with integrated structures and externally connected portions, a positioning hole which is matched with the positioning portions of the extraction electrodes is mounted on the torque resistant plate, during installation, the positioning portions of the electrodes penetrate through the positioning hole, and the entire torque resistant plate and the positioning portions of the electrodes are filled, sealed and fixed through a capacitor insulation packaging material. The filter capacitor has the advantages that the structure is reasonable, the effect is ideal, and the manufacturing is convenient.

Description

technical field [0001] The invention belongs to the field of electronic components, in particular to a filter capacitor. Background technique [0002] At present, the lead-out electrodes of filter capacitors are all integrated cylindrical bolts, and the lead-out electrodes are connected to the access end of the capacitor body and the gold-sprayed layer of the capacitor electrode, and are connected by tin-plated copper sheets by soldering; in actual operation and application , which involves the torque problem when tightening the nut: if the torque is too small, it may cause poor contact at the electrode, and the contact resistance will increase, which will cause unnecessary heat and lead to adverse consequences; but if the torque is too large When coupled with the above-mentioned unreasonable capacitor structure, the electrode screws may be loosened or even rotated, so that the tin-plated copper sheet used for the above connection is first torn at the welding part of the go...

AI Technical Summary

Problems solved by technology

[0002] At present, the lead-out electrodes of filter capacitors are all integrated cylindrical bolts, and the lead-out electrodes are connected to the access end of the capacitor body and the gold-sprayed layer of the capacitor electrode, and are connected by tin-plated copper sheets by soldering; in actual operation and application , which involves the torque problem when tightening the nut: if the torque is too small, it may cause poor contact at the electrode, and the contact resistance will increase, which will cause unnecessary heat and lead to adverse consequences; but if the torque is too large When coupled with the above-mentioned unreasonable capacitor structure, the electrode screws may be loosened or even rotated, so that the tin-plated copper sheet used for the above-mentioned connection will be torn at the soldering part of the gold-sprayed layer first, which will directly lead to the failure of the capacitor; even To a lesser extent, it may also bury hidden dangers, shorten the service life of the capacitor, and directly affect the work of the whole machine.

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