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Aluminum electrolytic capacitor applying high hydrous electrolyte and method for making aluminum electrolytic capacitor

An aluminum electrolytic capacitor and water-containing electrolyte technology, applied in liquid electrolytic capacitors, electrolytic capacitors, capacitors and other directions, can solve problems such as inability to overcome high temperature hydration problems, improve hydration resistance and acid and alkali resistance, improve stability, The effect of ensuring stability

Inactive Publication Date: 2011-11-09
王兴久
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that since the tongue of the negative electrode guide pin is covered with a common aluminum sheet, the common aluminum sheet cannot overcome the problem of high-temperature hydration in a high-water electrolyte

Method used

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  • Aluminum electrolytic capacitor applying high hydrous electrolyte and method for making aluminum electrolytic capacitor
  • Aluminum electrolytic capacitor applying high hydrous electrolyte and method for making aluminum electrolytic capacitor
  • Aluminum electrolytic capacitor applying high hydrous electrolyte and method for making aluminum electrolytic capacitor

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Embodiment 1

[0029] Such as figure 1 and Figure 7 As shown, the present invention provides an aluminum electrolytic capacitor using a high-water electrolyte. The capacitor body 8 is composed of a positive electrode foil 2 nailed to the positive guide pin 1, a negative electrode foil 4 nailed to the negative guide pin 3, and a positive electrode foil 4 that is arranged on the positive electrode. The electrolytic paper 5 is formed between the negative electrode foil 2 and the negative electrode foil 4. After the negative electrode foil 4 is subjected to voltage treatment, an oxide film is formed on its surface. The electrolytic paper 5 is used to isolate the positive electrode foil 2 and the negative electrode foil 4. The rear side surfaces of the positive electrode foil 2 and the negative electrode foil 4 . The upper surface of the tongue position 7 in the negative guide pin 3 is covered with a thin sheet, which is a pressurized negative electrode foil sheet 6 made of the same material as...

Embodiment 2

[0035] Such as Figure 8As shown, the present invention provides an aluminum electrolytic capacitor using a high-water electrolyte. The capacitor body 8 is composed of a positive electrode foil 2 nailed to the positive guide pin 1, a negative electrode foil 4 nailed to the negative guide pin 3, and a positive electrode foil 4 that is arranged on the positive electrode. The electrolytic paper 5 between the foil 2 and the negative electrode foil 3 is constituted. After the negative electrode foil is subjected to voltage treatment, an oxide film is formed on its surface. The electrolytic paper is used to isolate the positive electrode foil and the negative electrode foil. The electrolytic paper can be respectively arranged on the rear surfaces of the positive electrode foil and the negative electrode foil. The upper surface of the tongue in the negative guide pin is covered with a thin sheet, which is a pressurized negative electrode foil sheet made of the same material as the ne...

Embodiment 3

[0041] The invention provides an aluminum electrolytic capacitor using a high-water electrolyte. The capacitor body is composed of a positive electrode foil nailed to a positive guide pin, a negative electrode foil nailed to a negative guide pin, and an electrolytic capacitor disposed between the positive electrode foil and the negative electrode foil. The negative electrode foil is composed of paper. After the negative electrode foil is subjected to voltage treatment, an oxide film is formed on its surface. The electrolytic paper is used to separate the positive electrode foil and the negative electrode foil. The electrolytic paper can be respectively arranged on the rear surface of the positive electrode foil and the negative electrode foil. Wherein, the width K of the electrolytic paper may be greater than or equal to the width a of the tongue position, and the length c of the electrolytic paper may be greater than or equal to the length b of the tongue position.

[0042] Si...

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Abstract

The invention relates to an aluminum electrolytic capacitor applying high hydrous electrolyte and a method for making the aluminum electrolytic capacitor. A capacitor body consists of a positive foil connected with a positive guide needle, a negative foil connected with a negative guide needle and electrolytic paper positioned between the positive foil and the negative foil; a thin sheet is coated on the upper side surface at a tongue position in the negative guide needle and is a pressurized negative foil thin sheet which is made of the negative foil and subjected to voltage processing; and an oxide film is arranged on the surface of the thin sheet. The method for making the aluminum electrolytic capacitor comprises nine steps, namely cutting, connecting by nails, winding, roasting, impregnating, assembling, sleeving pipes, charging and testing. The pressurized negative foil thin sheet which is made of the negative foil and subjected to voltage processing is coated on the upper side surface at the tongue position in the negative guide needle before winding, and the capacitor body after the completion of winding is impregnated in the electrolyte with the moisture content of 5 to 25 percent. The aluminum electrolytic capacitor improves high-temperature stability and frequency characteristic of a product, and is suitable to be used at high temperature of above 100 DEG C.

Description

technical field [0001] The invention relates to an aluminum electrolytic capacitor, in particular to an aluminum electrolytic capacitor using a high-water electrolyte and a manufacturing method thereof. Background technique [0002] In recent years, electronic equipment has become more and more miniaturized. Capacitors are assembled in small and sealed spaces as filter components, and the operating temperature is very high. Due to the wide application of high-frequency electronic equipment, the requirements for the frequency characteristics of capacitors are getting higher and higher. To improve the frequency characteristics of the capacitor, a large amount of solute or water is often added to the driving electrolyte. Due to the addition of a large amount of solute at high temperature, it is easy to react with the solvent to produce a large amount of water. The solute will lose its ionic activity after chemical reaction, which will increase the internal resistance, and the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/145H01G9/04H01G9/035
Inventor 王兴久
Owner 王兴久
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