An aluminum electrolytic capacitor and method for manufacturing same

A technology for aluminum electrolytic capacitors and manufacturing methods, applied in the field of capacitors, capable of solving problems such as short-circuit breakdown of capacitors

Active Publication Date: 2007-04-04
HUNAN AIHUA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the existing production process of aluminum electrolytic capacitors, the tongues of the positive and negative guide pins are riveted on the positive and negative aluminum foils. Since the burrs on the tongues of the positive and negative guide pins are in direct contact with the electrolytic paper, the burrs may Puncture the electrolytic paper or burr tip discharge under the electric field to cause short-circuit breakdown of the capacitor

Method used

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  • An aluminum electrolytic capacitor and method for manufacturing same
  • An aluminum electrolytic capacitor and method for manufacturing same

Examples

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Embodiment 1

[0016] It can be seen from Fig. 1 and Fig. 2 that an aluminum electrolytic capacitor comprises a positive foil 5 riveted with a positive guide pin 6, a negative foil 3 riveted with a negative guide pin 2, and electrolytic paper 4 is wound between them. After impregnation, it is placed in a tubular aluminum shell with a bottom, and the opening of the aluminum shell is sealed with rubber particles. Before rolling, the tongue of the negative electrode guide pin 2 is covered with an aluminum sheet 1, and the aluminum sheet 1 is covered on the negative foil by bonding or pressure riveting or stabbing or padding (in this embodiment, pressure riveting) 3 on. The aluminum sheet 1 described in the present invention can be a negative foil 3 .

Embodiment 2

[0018] As an improvement of the present invention, before wrapping, the tongue of the positive electrode guide pin 6 is also covered with an aluminum sheet 1; ) covered on the positive foil 5. The rest are the same as embodiment 1.

Embodiment 3

[0020] The aluminum sheet 1 is covered on the negative foil 3 by bonding, and is covered on the positive foil 5 by pressing. The rest are the same as embodiment 1.

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Abstract

Disclosed is an aluminum electrolytic capacitor with high reliability and long service life and its manufacture method comprising positive foil [5] whose riveting has positive guide pin [6] and negative guide pin [3] whose riveting has negative guide pin [2], and between them electrolytic paper [4] wrapped and dipped in a aluminum shell whose opening is sealed by rubber particle by using the method including steps of parting cut - riveting - involution -penetration - assemblage - aging -testing. Its characteristics is that the capacity of ripple current resistance and reliability are raised and service life is prolonged, by test, breakage ratio of short circuit is reduced from 0.2%~0.5% to 5ppm, the capacity of ripple current resistance is increased by 20~50% and service life is prolonged by 20~50%.

Description

Technical field: [0001] The invention relates to a capacitor, in particular to an aluminum electrolytic capacitor and a manufacturing method thereof. Background technique: [0002] At present, in the existing production process of aluminum electrolytic capacitors, the tongues of the positive and negative guide pins are riveted on the positive and negative aluminum foils. Since the burrs on the tongues of the positive and negative guide pins are in direct contact with the electrolytic paper, the burrs may Piercing the electrolytic paper or the tip discharge of the burr under the electric field causes the short-circuit breakdown of the capacitor. Invention content: [0003] The object of the present invention is to provide an aluminum electrolytic capacitor with high product reliability and long service life and its manufacturing method. [0004] The present invention realizes the purpose of the invention by adopting the following technical scheme, an aluminum electrolytic ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01G9/04H01G9/00
Inventor王安安
OwnerHUNAN AIHUA GRP