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Aluminum electrolytic capacitor and manufacturing method thereof

A technology of an aluminum electrolytic capacitor and a manufacturing method, applied in the field of capacitors, can solve the problems of inconvenient use of lamps, large space occupied by electrolytic paper, increased volume and weight of lamps, etc. Effect

Active Publication Date: 2019-04-12
横店集团东磁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that in the structural design of the existing high-voltage aluminum electrolytic capacitors, the universal thickness of the electrolytic paper is usually set relatively thick, resulting in a large space occupied by the electrolytic paper after the winding is completed, and it will still increase the application. The volume and weight of the lamps in the photographic equipment cause the disadvantages of inconvenient use of the lamps used in the photographic equipment, and provide a method to reduce the volume of the aluminum electrolytic capacitor, increase the capacity of the aluminum electrolytic capacitor, and reduce the leakage current of the aluminum electrolytic capacitor. Reduce the breakdown rate of aluminum electrolytic capacitors and improve the oxidation efficiency of aluminum electrolytic capacitors

Method used

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  • Aluminum electrolytic capacitor and manufacturing method thereof

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Embodiment 1

[0045] A manufacturing method of an aluminum electrolytic capacitor, the manufacturing method comprising the following steps:

[0046] 1) Foil cutting: Cut the capacitor paper, anode foil, cathode foil, and aluminum lead-out strips into specified sizes for use in the next process; the withstand voltage of the anode foil is selected as 1.2 times the working voltage;

[0047] 2) Winding: Rivet the lead bar or lead wire on the corresponding aluminum foil, and roll the riveted anode and cathode foils and electrolytic paper into a capacitor core; the thickness of the electrolytic paper is 70% of the general thickness, and the density of the electrolytic paper is 110% of the general density;

[0048] 3) Impregnation: After the core is dried, it is impregnated with the electrolyte of the corresponding working voltage, which acts as the cathode to repair the oxide film;

[0049] 4) Assembly and sealing: riveting or welding the core and the cover plate, lead products: the two leads of...

Embodiment 2

[0059] A manufacturing method of an aluminum electrolytic capacitor, the manufacturing method comprising the following steps:

[0060] 1) Foil cutting: Cut the capacitor paper, anode foil, cathode foil, and aluminum lead-out strips into specified sizes for use in the next process; the withstand voltage of the anode foil is selected as 1.25 times the working voltage;

[0061] 2) Winding: Rivet the lead bar or lead wire on the corresponding aluminum foil, and roll the riveted anode and cathode foils and electrolytic paper into a capacitor core; the thickness of the electrolytic paper is 75% of the general thickness, and the density of the electrolytic paper is 112% of the general density;

[0062] 3) Impregnation: After the core is dried, it is impregnated with the electrolyte of the corresponding working voltage, which acts as the cathode to repair the oxide film;

[0063] 4) Assembly sealing: riveting or welding the core and the cover plate, lead products: insert the two lead...

Embodiment 3

[0073] A manufacturing method of an aluminum electrolytic capacitor, the manufacturing method comprising the following steps:

[0074] 1) Foil cutting: Cut the capacitor paper, anode foil, cathode foil, and aluminum lead-out strips into specified sizes for use in the next process; the withstand voltage of the anode foil is selected as 1.3 times the working voltage;

[0075] 2) Winding: Rivet the lead bar or lead wire on the corresponding aluminum foil, and roll the riveted anode and cathode foils and electrolytic paper into a capacitor core; the thickness of the electrolytic paper is 80% of the general thickness, and the density of the electrolytic paper is 115% of the general density;

[0076] 3) Impregnation: After the core is dried, it is impregnated with the electrolyte of the corresponding working voltage, which acts as the cathode to repair the oxide film;

[0077] 4) Assembly sealing: riveting or welding the core and the cover plate, lead products: insert the two leads...

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Abstract

The invention provides an aluminum electrolytic capacitor. A basic structure of the aluminum electrolytic capacitor is of a foil-type winding structure and is fabricated by winding a positive electrode foil corroded to form an oxide film, a corroded negative electrode foil and electrolyte paper partitioned between the positive electrode foil and the negative electrode foil to form a core pack, immersing the core pack in an electrolyte, riveting a cover plate and sealing in an aluminum shell. The length of the positive electrode foil is reduced, the winding number of the aluminum electrolytic capacitor can be reduced after winding is completed, so that the volume of the aluminum electrolytic capacitor can be reduced; compared with electrolyte paper selecting general thickness and general density in the prior art, the volume of the aluminum electrolytic capacitor formed by winding can be reduced after winding is completed, the breakdown rate of the aluminum electrolytic capacitor is reduced, meanwhile, the oxidization time of the positive electrode foil during oxidization can be reduced, the efficiency is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a high-voltage 450V-630V aluminum electrolytic capacitor and a manufacturing method thereof. Background technique [0002] Capacitors, as a device to hold charges, are one of the electronic components widely used in electronic equipment, and are widely used in DC blocking, coupling, bypass, filtering, tuning loops, energy conversion, control, etc. in circuits. Among them, aluminum electrolytic capacitors, which have the advantage of relatively large capacity, are popular in electronic equipment. [0003] At present, aluminum electrolytic capacitors are widely used in notebook computers, ballasts, automotive electronics and other industries. [0004] With the continuous development of the electronic equipment industry and the increasing demand for use, the requirements for aluminum electrolytic capacitors are also gradually increasing. Long, less harmful light radiation, low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/145H01G9/055H01G9/035H01G13/00H01G13/02H01G13/04
CPCH01G9/035H01G9/055H01G9/145H01G13/00H01G13/003H01G13/006H01G13/02H01G13/04
Inventor 胡蔚
Owner 横店集团东磁有限公司
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