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Separator for aluminum electrolytic capacitor and aluminum electrolytic capacitor

A technology for aluminum electrolytic capacitors and diaphragms, which is applied in the field of diaphragms for aluminum electrolytic capacitors and aluminum electrolytic capacitors. It can solve the problems of reduced diaphragm strength, increased manufacturing hours, and complicated steps, and achieves the effect of improving reliability.

Inactive Publication Date: 2020-11-10
NIPPON KODOSHI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, due to the carbonization treatment, the manufacturing man-hours are increased, and the steps are also complicated.
In addition, the carbonization treatment causes thermal decomposition of cellulose, so the physical strength of the separator is also reduced.

Method used

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  • Separator for aluminum electrolytic capacitor and aluminum electrolytic capacitor
  • Separator for aluminum electrolytic capacitor and aluminum electrolytic capacitor
  • Separator for aluminum electrolytic capacitor and aluminum electrolytic capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] The diaphragm of Example 1 was obtained using a raw material of Example 1 using a raw material of Example 1 using a raw material of 25% by mass of fibrous active aramid fibers and 25% by mass of fibrous polyarylate fibers, 15% by mass of polyvinyl alcohol.

[0120] The diaphragm thickness of Example 1 was 60 μm, and the density was 0.200 g / cm. 3 The porosity is 85.0%, the average aperture is 12.0 μm, and the Clark stiffness is 2.0cm. 3 / 100.

Embodiment 2

[0122] The diaphragm of Example 2 was obtained using a mixed 70% by mass of fibrous active aramide, 20% by mass of fibrous polyamide imide fibers, 10% by mass of the raw material of polyacrylamide.

[0123] The diaphragm thickness of Example 2 was 40 μm, and the density was 0.484 g / cm. 3 The porosity is 65.0%, the average aperture is 10.0 μm, and the Clark rigid is 8.0cm. 3 / 100.

Embodiment 3

[0125] Use a mixed 40% by mass of fibrous amorphous a aramid fiber, 35% by mass of raw coatient polypolynzene, 25% by mass of the raw material of polyvinyl alcohol, and the circular paper paper is carried out. The diaphragm.

[0126] The separator thickness of Example 3 was 35 μm, and the density was 0.284 g / cm. 3, A porosity of 80.0%, an average pore diameter of 17.0, Clark stiffness 4.0cm 3 / 100.

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Abstract

The present invention relates to a separator for aluminum electrolytic capacitors, which is interposed between a pair of electrodes, and which has a porosity of 65-85%, an average pore diameter of 0.5-25.0 micrometer and a Clark stiffness of 1-10 cm3 / 100. In addition, the separator is composed of a nonwoven fabric which has these features, while containing polyamide fibers. By using this separatorin a solid electrolytic capacitor or in a hybrid electrolytic capacitor, the initial ESR and short circuit failure ratio are able to be reduced, while enabling improvement of reliability that is goodenough for use in a harsh environment over a long period of time. In addition, this separator is able to be used in an aluminum electrolytic capacitor which uses a conductive polymer as a negative electrode material.

Description

Technical field [0001] The present invention relates to a separator for electrolytic capacitors, and aluminum electrolytic capacitors using the membrane. Background technique [0002] In recent years, the miniaturization of electronic devices, the development of high performance, is mounted on a circuit board like member used in such electronic devices also requires further miniaturization and high performance. [0003] One member is mounted on the circuit board has an aluminum electrolytic capacitor, aluminum electrolytic capacitor, the cathode material is an aluminum solid electrolytic capacitor using a conductive polymer (hereinafter referred to as "solid electrolytic capacitor"), the cathode materials of the electrolyte non-conventional aluminum solid electrolytic capacitor (hereinafter referred to as "non-solid electrolytic capacitor.") as compared to the frequency characteristics excellent, the equivalent series resistance (hereinafter, referred to as "the ESR.") small, hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/02H01G9/145H01G9/15
CPCH01G9/02Y02E60/13H01G11/52H01G9/15H01G9/145H01G9/0425
Inventor 越智贵史石休正树熊冈弘伦
Owner NIPPON KODOSHI