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Capacitor element of solid electrolytic capacitor and method for manufacturing the same, solid electrolytic capacitor

A technology of solid electrolysis and capacitors, which is applied in the direction of solid electrolytic capacitors, electrolytic capacitors, fixed capacitor parts, etc., can solve the problems of unavoidable capacitor capacity reduction, etc., and achieve the effects of reducing the occurrence rate of defective products, simplifying the process, and reducing costs

Inactive Publication Date: 2008-11-05
ROHM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the synthetic resin P is filled into the concave portion 2c of the one end surface 2a of the anode electrode body 2 in a state where the synthetic resin P is dissolved in a solvent, the synthetic resin P will be deeply damaged in the process before the synthetic resin P is dried. Permeate into the porous structure of the anode electrode body 2, so the problem of reduction in capacitor capacity caused by the penetration of synthetic resin cannot be avoided.

Method used

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  • Capacitor element of solid electrolytic capacitor and method for manufacturing the same, solid electrolytic capacitor
  • Capacitor element of solid electrolytic capacitor and method for manufacturing the same, solid electrolytic capacitor
  • Capacitor element of solid electrolytic capacitor and method for manufacturing the same, solid electrolytic capacitor

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Experimental program
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Effect test

Embodiment 2

[0104] First, tantalum powder such as Figure 16 As shown, the porous anode electrode body 22 is fixed and then sintered, and an anode metal wire 23 made of tantalum and having a diameter d0 (about 150 to 200 micrometers) protrudes from one end surface 22 a of the anode electrode body 22 .

[0105] On the other hand, from a plate made of a raw material such as a transparent thermoplastic synthetic resin having hydrophobicity and thermal shrinkage such as a fluororesin with a melting point of about 270°C, through perforation, etc., such as Figure 16 As shown, an annular body 28 having a thickness T (about 100 micrometers) and a diameter D (about 600 micrometers) having a through hole 28 a with an inner diameter d is fabricated in advance. Then, if Figure 17 As shown, the annular body 28 is embedded and installed on the root of the anode metal wire 23 with a diameter d0 protruding from one end surface 22a of the anode electrode body 22 relative to the anode electrode body 22,...

Embodiment 3

[0124] First, if Figure 22 As shown, tantalum powder is fixed to form a porous anode electrode body 32 and then sintered, and an anode wire 33 made of tantalum protrudes from one end surface 32 a of the anode electrode body 32 .

[0125] When the anode electrode body 32 is fixedly formed, a recess 32c having a depth h that surrounds the anode wire 33 protruding from the end surface 32a is provided on the end surface 32a.

[0126] On the other hand, from a raw material plate made of a hydrophobic transparent thermoplastic synthetic resin such as a fluorine-based resin with a melting point of about 270°C, through perforation, etc., such as Figure 22 As shown, an annular body 38 having a thickness dimension T having a through hole 38a is prepared in advance. Then, if Figure 23 As shown, the annular body 38 is embedded and mounted on the root of the anode metal wire 33 protruding from one end surface 32 a of the anode electrode body 32 relative to the anode electrode body 32 ...

Embodiment 4

[0143] First, if Figure 27 As shown, tantalum powder is fixed to form a porous anode electrode body 42 and then sintered, and an anode wire 43 made of tantalum protrudes from one end surface 42 a of the anode electrode body 42 .

[0144] On the other hand, from a raw material sheet made of a transparent thermoplastic synthetic resin such as a fluorine-based resin with a melting point of about 270°C that is hydrophobic and shrinkable when heated, through perforation, etc., such as Figure 27 As shown, an annular body 48 having a through hole 48a having an inner diameter d, a thickness dimension T, and a diameter D is prepared in advance. Then, if Figure 28 and Figure 29 As shown, the annular body 48 is inserted and installed in the base of the anode wire 43 protruding from the one end surface 42 a of the anode electrode body 42 relative to the anode electrode body 42 .

[0145] Next, the anode electrode body 42 is kept in an upward posture with its end surface 42a facing up...

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PUM

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Abstract

To reduce the rate of defective products in the process for forming a solid electrolyte layer to an anode tip element, in a capacitor element comprising the anode tip element made of sintered powder of a metal having a valve action, and an anode wire protruded from an end surface of the anode tip element wherein a ring element made of a water-repellent thermoplastic synthetic resin is fitted on the root portion of the anode wire. The ring element fitted on the anode wire is heated and fused in the state of fitting it on the anode wire to be adhered both to the anode tip element and to the anode wire without clearance.

Description

technical field [0001] The present invention relates to a capacitor element of a solid electrolytic capacitor, a method for manufacturing the capacitor element, and a solid electrolytic capacitor using the capacitor element. Background technique [0002] Usually, in this kind of solid electrolytic capacitor, roughly speaking, for example, the configuration described in JP-A-60-220922 and the like is as follows: figure 1 The solid electrolytic capacitor 100 having the structure shown, and, for example, the structure described in JP-A No. 2-105513, etc. are figure 2 A solid electrolytic capacitor 200 with a safety fuse in the structure shown. [0003] In the former solid electrolytic capacitor 100, a porous anode electrode body 2 having solidified and sintered powder of a valve action (Valve Action) metal, and an anode made of a valve action metal fixed to one end surface 2a of the anode electrode body 2 are formed. The metal wire 3 and the capacitor element 1 of the anode-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/08H01G9/012H01G9/15H01G4/228H01G9/00H01G9/042H01G9/10H02G3/08
CPCH01G9/012H01G9/08H01G9/042H01G9/10
Inventor 中村伸二三浦武安藤秀树
Owner ROHM CO LTD
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