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Electrolytic capacitor

An electrolytic capacitor and electrical connection technology, applied in the direction of electrolytic capacitors, capacitors, capacitor terminals, etc., can solve the problems of productivity inhibition, reduction of electrolytic capacitor characteristics, and ESL increase, and achieve the effect of ESL reduction.

Active Publication Date: 2011-04-06
SANYO ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0034] When the two anode lead protruding terminals 111, 112 are staggered from the positions corresponding to the vertices of the regular triangle, the distance between the anode (cathode) lead protruding terminals 111, 112, 113 changes, and the ESL increases, as The characteristics of electrolytic capacitors degrade
In addition, it is difficult to insert the respective anode (cathode) lead protruding terminals 111, 112, 113 into the opening 122a of the sealing rubber gasket 122 and the opening 124a of the seat plate 124, and the productivity is suppressed.

Method used

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  • Electrolytic capacitor
  • Electrolytic capacitor
  • Electrolytic capacitor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0117] Here, an electrolytic capacitor using a double-sided crimp terminal as the first anode (cathode) lead terminal and a single-side crimp terminal as the second anode (cathode) lead terminal will be described.

[0118] like figure 1 As shown, the double-sided crimping terminal 16 is formed into a roughly bilaterally symmetrical shape with respect to the lead wire 16c by two identical molds, and a cylindrical boss portion 16a and a plate-shaped connection to the anode (cathode) foil are formed. part 16b and a cylindrical lead 16c serving as an anode (cathode) terminal. The lead wire 16c is provided on one end side of the boss part 16a, and the connection part 16b is provided on the other end side of the boss part 16a. It should be noted that, in figure 1 In , the plate-shaped connecting portion 16b is arranged in a direction perpendicular to the paper surface.

[0119] On the other hand, if Figure 2A and 2B As shown, the single-side crimping terminal 18 is formed in...

no. 2 approach

[0139] Here, an electrolytic capacitor using a one-sided crimp terminal as the first anode (cathode) lead terminal and a double-side crimp terminal as the second anode (cathode) lead terminal will be described.

[0140] First, if Figure 13As shown, a one-side crimping terminal 18 is connected as a first anode lead protruding terminal 11 and a double-side crimping terminal 16 is connected as a second anode lead protruding terminal 12 at a predetermined position in the longitudinal direction of the anode foil 3 . In addition, a one-sided crimp terminal 18 is connected as a first cathode lead protrusion terminal 14 and a double-side crimp terminal 16 is connected as a second cathode lead protrusion terminal 15 at a predetermined position in the longitudinal direction of the cathode foil 4 .

[0141] At this time, like the above-mentioned electrolytic capacitor, the first anode lead terminal 11 is arranged in a predetermined first circumferential direction in a coiled state with ...

Embodiment 1

[0167] The inventor produced an electrolytic capacitor using a double-sided crimp terminal as the first anode (cathode) lead terminal and a single-side crimp terminal as the second anode (cathode) lead terminal (first embodiment) , and an electrolytic capacitor (second embodiment) using a single-sided crimping terminal as the first anode (cathode) lead terminal and using a double-sided crimping terminal as the second anode (cathode) lead terminal (second embodiment) One, the position (arrangement shape) of the four anode (cathode) lead protruding terminals (leads) after completion was evaluated.

[0168] It should be noted that the specific manufacturing method of the electrolytic capacitor is as described in the above-mentioned first embodiment and second embodiment, and the diameter is 8.0 mm. In addition, as Comparative Example 1, 500 electrolytic capacitors using double-sided crimping terminals as the first (two) anode (cathode) lead protruding terminals were produced, and...

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Abstract

A both-side pressed terminal is connected as a first anode (cathode) lead tab terminal to an anode (a cathode) foil. A first connection surface of a connection portion of a one-side pressed terminal as a second anode (cathode) lead tab terminal is connected to an inner circumferential surface of the anode (cathode) foil. A position in a radial direction of a lead of the second anode (cathode) lead tab terminal is shifted inward to be in registration with a position in a radial direction of a lead of the first anode (cathode) lead tab terminal. Thus, an electrolytic capacitor free from position displacement of an anode (a cathode) lead tab terminal while maintaining characteristics as an electrolytic capacitor can be obtained.

Description

technical field [0001] The present invention relates to an electrolytic capacitor, and particularly to an electrolytic capacitor in which an anode foil, a cathode foil, and the like are wound. Background technique [0002] As one of the forms of electrolytic capacitors, there is an electrolytic capacitor formed by winding a separator paper between an anode foil and a cathode foil. [0003] Here, as such a wound type electrolytic capacitor, a method of manufacturing an electrolytic capacitor having a two-terminal (one anode terminal + one cathode terminal) structure will be described. First, if Figure 52 As shown, strip-shaped anode foil 103 , cathode foil 104 , and two sheets of separator paper 105 , 106 each having a predetermined length are prepared. As the anode foil, for example, an aluminum foil on which a dielectric oxide film is formed is used, and as the cathode foil, an aluminum foil is used. [0004] An anode lead terminal 110 is connected to a predetermined pos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/008
CPCH01G9/012H01G9/04
Inventor 藤本和雅
Owner SANYO ELECTRIC CO LTD
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