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
CN102237201AInactive Publication Date: 2011-11-09ηŽ‹ε…΄δΉ…
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ηŽ‹ε…΄δΉ…
Publication Date
2011-11-09
Estimated Expiration
Not applicable Β· inactive patent

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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.
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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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