Manufacturing method for solid-liquid mixed type aluminum electrolytic capacitor

Abstract

The invention discloses and provides a manufacturing method for a solid-liquid mixed type aluminum electrolytic capacitor. The manufacturing method is quite low in ESR and good in high frequency filtering performance, can be used for achieving certain oxide film repair ability, improves voltage of the electrolytic capacitor and reduces leak current. The manufacturing method includes the following steps that an isolating paper roll is interfered between anodizing aluminum foil and cathode foil to be wound into a core package, wherein the anodizing aluminum foil is well riveted with an outgoing line; the core package is welded on a stainless steel bar in a spot welding mode, and an oxide film is charged and repaired in formation liquid; the charged core package is rinsed thoroughly and dried; the dried core package is impregnated in turbid liquid; the impregnated core package is dried and then is impregnated in electrolyte solution; the impregnated product is provided with a rubber plug and sealed with an outer shell to form a semi-finished capacitor; aging and charging are carried out on the sealed semi-finished capacitor to form the finished capacitor.

Description

technical field [0001] The invention relates to a preparation method of a solid-liquid mixed type aluminum electrolytic capacitor. Background technique [0002] Compared with ordinary leaded aluminum electrolytic capacitors, conductive polymer solid aluminum electrolytic capacitors are characterized by extremely low ESR and excellent high-frequency filtering performance. In recent years, they have been rapidly applied in computer motherboards, game consoles, high-end digital products, chargers and other fields. growth; however, due to its low ability to repair the oxide film and poor leakage current performance, especially the varieties with a voltage above 20V are prone to leakage and short-circuit failure, which greatly limits the further rapid development of the solid aluminum electrolytic capacitor market, so if it can be invented A capacitor that not only has the advantages of low impedance and high ripple of a solid aluminum electrolytic capacitor, but also can reduce ...

AI Technical Summary

Problems solved by technology

[0002] Compared with ordinary leaded aluminum electrolytic capacitors, conductive polymer solid aluminum electrolytic capacitors are characterized by extremely low ESR and excellent high-frequency filtering performance. In recent years, they have been rapidly applied in computer motherboards, game consoles, high-end digital products, chargers and other fields. growth; however, due to its low ability to repair the oxide film and poor leakage current performance, especially the varieties with a voltage above 20V are prone to leakage and short-circuit failure, which greatly limits the further rapid development of the solid aluminum electrolytic capacitor market, so if it can be invented A capacitor that not only has the advantages of low impedance and high ripple of solid aluminum electrolytic capacitors, but also can reduce its leakage, short circuit, open circuit and other faults, will have unlimited development potential in the future

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