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Manufacturing method for solid aluminum electrolytic capacitor

A technology for electrolytic capacitors and manufacturing methods, applied in solid electrolytic capacitors, capacitor parts, capacitor casings/packages, etc., can solve problems such as affecting the electrical properties of capacitors, insufficient polymerization, and inability to effectively remove solvent components, so as to avoid damage. , the effect of improving electrical performance

Active Publication Date: 2009-08-12
ZHUHAI LEAGUER CAPACITOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it is a one-time polymerization reaction, the polymerization is not sufficient and the solvent component cannot be effectively removed during the polymerization reaction, and some of it will remain in the capacitor core package to affect the electrical properties of the capacitor.

Method used

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  • Manufacturing method for solid aluminum electrolytic capacitor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Anodized aluminum foil, cathode anodized aluminum foil, and electrolytic paper are wound into a core pack through a core wrap winding machine. The electrolytic paper is between the anodized aluminum foil and the cathodic aluminum foil, and the length of the electrolytic paper is longer than that of the cathode anodized aluminum foil. long in length

[0029] 2. Put the wound core package into the chemical solution, apply DC voltage to repair it, and the treatment time is 10 minutes. Note that the core package cathode and anode lead-out wires cannot be immersed in the chemical solution, so as not to cause corrosion and affect welding performance; The chemical forming solution is ammonium adipate aqueous solution; the core-packed chemical forming is helpful for the oxidation film layer on the surface of the aluminum foil to be repaired;

[0030] 3. Carry out carbonization treatment on the core package, the carbonization temperature is 300°C, and the carbonization time i...

Embodiment 2

[0037] 1. Anodized aluminum foil, cathode anodized aluminum foil, and electrolytic paper are wound into a core pack through a core wrap winding machine. The electrolytic paper is between the anodized aluminum foil and the cathodic aluminum foil, and the length of the electrolytic paper is longer than that of the cathode and anodized aluminum foil. part length is long;

[0038] 2. Put the wound core package into the chemical solution, and apply DC voltage for repair treatment. The treatment time is 10 minutes. Note that the lead wires of the core package cathode and anode cannot be immersed in the chemical solution, so as not to cause corrosion and affect the welding strength. ;The forming liquid is an aqueous solution of ammonium borate; the core-wrapped forming helps to form the oxide film layer on the surface of the aluminum foil for repair;

[0039] 3. Carry out carbonization treatment on the core package, the carbonization temperature is 320°C, and the carbonization time i...

Embodiment 3

[0046] 1. Anodized aluminum foil, cathode anodized aluminum foil, and electrolytic paper are wound into a core pack through a core wrap winding machine. The electrolytic paper is between the anodized aluminum foil and the cathodic aluminum foil, and the length of the electrolytic paper is longer than that of the cathode and anodized aluminum foil. The length of the part is long;

[0047] 2. Put the wound core package into the chemical solution, and apply DC voltage for repair treatment. The treatment time is 10 minutes. Note that the lead wires of the core package cathode and anode cannot be immersed in the chemical solution, so as not to cause corrosion and affect welding strength; the forming solution is an aqueous solution of ammonium dihydrogen phosphate; the core-packed forming is helpful for repairing the oxide film layer on the surface of the aluminum foil;

[0048] 3. Carry out carbonization treatment on the core package, the carbonization temperature is 200°C, and the...

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Abstract

The invention discloses a method for manufacturing a solid aluminum electrolytic capacitor. The manufacturing method comprises the step of impregnating a core by a monomer and an oxidant respectively after restoration and carbonizing treatment of the coiled core. The method is characterized in that the impregnated core is subjected to two-stage polymerization, namely, firstly low-temperature polymerization and then high-temperature polymerization, so that the polymerization of the monomer and the oxidant fully generates a stable conductive polymer layer; a solvent can be discharged out of the capacitor more efficiently so as to improve the electrical property of the capacitor; and voltages of 0.5, 1 and 1.2 times of a rated voltage are applied to a product in an ageing treatment process respectively to carry out stepwise ageing treatment so as to avoid damage of the core caused by overvoltage shock during disposable ageing, reduce ESR and leakage current LC and achieve the aim of improving the electrical property.

Description

technical field [0001] The invention relates to a manufacturing method of an electrolytic capacitor, in particular to a manufacturing method of a solid aluminum electrolytic capacitor. Background technique [0002] Compared with ordinary liquid electrolytic capacitors, solid electrolytic capacitors have outstanding electrical properties, such as low equivalent series resistance (ESR), high ripple current resistance, long service life, and stable performance. With the continuous upgrading of electronic products and the continuous improvement of their functions and performance, the requirements for high-frequency characteristics of capacitors are also getting higher and higher. Various methods are used to reduce the ESR of solid electrolytic capacitors to meet the high-frequency characteristics of capacitors. [0003] Chinese patent CN200610037792.5 discloses a method for manufacturing a solid electrolytic capacitor, which uses thiophene monomers and alkoxybenzenesulfonic acid...

Claims

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Application Information

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IPC IPC(8): H01G9/15H01G9/08
Inventor 龙纪明李振中
Owner ZHUHAI LEAGUER CAPACITOR
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