Novel capacitor internal connection structure

Abstract

The invention relates to a novel capacitor internal connection structure. The structure comprises a housing body. A capacitor cores which is wound into be a cylinder-shaped structure is arranged in the housing body. A first welding end face and a second welding end face form upper and lower ends of the capacitor core. A first electrode is welded to the first welding end face. A second electrode iswelded to the second welding end face through a connection copper sheet. The connection copper sheet is made of a whole copper sheet and is stamped into upper connection blocks, middle connection blocks and lower connection blocks. At least one upper open groove is arranged in the upper connection blocks. At least one lower open groove is arranged in the lower connection blocks at least. A fold is arranged on the middle connection blocks between the upper groove and the lower groove, so the connection copper sheet is formed into at least two moving bodies. The lower connection welding blocksare to the second welding end face. The second electrode is welded to the upper connection blocks. By using the folds and the open groove structures on the connection copper sheet, a quite wide coppersheet can be used so that overcurrent ability of the connection electrode is improved; and the connection structure is suitable for a circular cambered surface of a core, so waste of space is reduced.

Description

Technical field [0001] The embodiment of the present invention relates to the technical field of capacitors, in particular to a novel internal connection structure of a capacitor. Background technique [0002] At present, the electrode welding structure of ordinary capacitor cores uses two narrow copper sheets superimposed together for welding. The undesirable effect of this method is that the connecting copper sheets cannot take a wider size, otherwise it will be due to the curvature of the core. (The core is cylindrical and the sides are arc surfaces) and the arc surface of the shell affects the maximum diameter that the core can be made due to size interference, thereby affecting the maximum capacity value that the product can make; [0003] At the same time, because the connecting copper sheets are superimposed on each other, it is basically impossible to superimpose more than 4 layers of copper sheets, and its overcurrent capability is limited. Summary of the invention [0004...

AI Technical Summary

Problems solved by technology

[0002] At present, the electrode welding structure of ordinary capacitor cores uses two narrow copper sheets to be welded together. (The core is cylindrical, and the side is a circular arc surface) and the arc surface of the shell affects the maximum diameter of the core and the maximum capacity of the product due to size interference;

[0003] At the same time, since the connecting copper sheets are superimposed on each other, it is basically impossible to superimpose more than 4 layers of copper sheets, and its overcurrent capability is limited

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