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Method of manufacturing electrolytic capacitor and electrolytic capacitor

A technology of electrolytic capacitors and manufacturing methods, applied in the direction of electrolytic capacitors, solid electrolytic capacitors, capacitors, etc., to achieve the effect of improving characteristics

Inactive Publication Date: 2012-09-19
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prepare anode foil and cathode foil

Method used

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  • Method of manufacturing electrolytic capacitor and electrolytic capacitor
  • Method of manufacturing electrolytic capacitor and electrolytic capacitor
  • Method of manufacturing electrolytic capacitor and electrolytic capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0066] Here, an electrolytic capacitor using both sides pressed terminals as anode (cathode) lead plate terminals will be described. First, the both-side pressing terminal WPT is formed by pressing the wire rod using two identical dies. Therefore, if figure 1 and figure 2 As shown, the both-side press terminals are formed in a shape that is substantially bilaterally symmetrical with respect to the center line CC (connection portion). A plate-shaped connecting portion 11 to be connected to the anode (cathode) foil is formed on one end side of the cylindrical protruding portion 10 . In addition, a lead wire 12 is attached to the other end side of the protruding portion 10 . It should be noted that in figure 2 Among them, the plate-shaped connecting portion 11 is arranged in a direction perpendicular to the paper surface.

[0067] (first example)

[0068] Next, the core for winding an anode (cathode) foil or the like used for the production of the electrolytic capacitor o...

no. 2 approach

[0118] Here, an electrolytic capacitor using both-side pressed terminals and one-side pressed terminals as the anode (cathode) lead terminal will be described.

[0119] The single-sided pressing terminal is formed by pressing the wire rod mainly with one of the two identical dies. Therefore, if Figure 29A and Figure 29B As shown, the single-sided press terminals are formed asymmetrically with respect to the centerline CC (connection portion). exist Figure 29A It shows that the offset (distance S1 ) of the lead 12 relative to the connection part 11 is relatively small on one side of the pressed terminal, and in the Figure 29B A single-sided pressed terminal with a relatively large offset (distance S2 ) is shown in . Any one-side press terminal SPT is molded with a cylindrical protrusion 10 , a plate-shaped connecting portion 11 connected to the anode (cathode) foil, and a cylindrical lead 12 serving as an anode (cathode) terminal. The lead 12 is provided on one end sid...

Embodiment approach 3

[0137] Here, an electrolytic capacitor using only one-sided press terminals as the anode (cathode) lead plate terminals will be described. As described above, in the one-sided press terminal, by changing the surface connected to the anode (cathode) foil in the connecting portion of the one-sided press terminal, the lead wire and the like can be shifted radially outward or radially inward. offset.

[0138] Figure 37 The case where one-side pressed terminal is applied to the first anode lead terminal AS1 and the first cathode lead terminal CS1 and one-side pressed terminal is applied to the second anode lead terminal AS2 and the second cathode lead terminal CS2 is shown in FIG. Below, an example of the connection state of the first (second) anode (cathode) lead plate terminal to the anode (cathode) foil.

[0139] Next, similarly to the first example, the anode foil 3 , the cathode foil 4 , and one end side of the spacer papers 5 and 6 are sandwiched by the clamping body 31 a ...

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PUM

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Abstract

The invention provides a method of manufacturing an electrolytic capacitor and an electrolytic capacitor. As a core for winding up an anode foil, a cathode foil, and the like, such a core as exhibiting an outer shape having a long-side direction and a short-side direction in a cross-section perpendicular to a rotation central axis, with a straight line in the long-side direction passing through the rotation central axis being defined as a first centerline and with a straight line in the short-side direction passing through the rotation central axis being defined as a second centerline, the outer shape being in asymmetry in a manner at least any of first asymmetry which is asymmetry with respect to the second centerline in the long-side direction and second asymmetry which is asymmetry with respect to the first centerline in the short-side direction, is employed.

Description

technical field [0001] The present invention relates to a method for producing an electrolytic capacitor and an electrolytic capacitor, and particularly relates to a method for producing a wound electrolytic capacitor in which an anode foil, a cathode foil, and the like are wound, and such an electrolytic capacitor. Background technique [0002] As one form of an electrolytic capacitor, there is an electrolytic capacitor formed by winding an anode foil and a cathode foil through a spacer paper. This electrolytic capacitor is formed as follows. First, the anode lead terminal is connected to a predetermined position in the longitudinal direction of the anode foil, and the cathode lead terminal is connected to a predetermined position in the longitudinal direction of the cathode foil. Next, one end of the anode foil, the cathode foil, etc. is sandwiched by a predetermined winding core, and the winding core is rotated in a predetermined direction in this state, and the anode fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/012H01G9/15
CPCH01G9/008H01G9/15H01G9/151H01G9/10H01G9/012
Inventor 近藤正史
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD