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Ultrahigh-voltage aluminum electrolytic capacitor and manufacturing method thereof

A technology for aluminum electrolytic capacitors and manufacturing methods, applied in electrolytic capacitors, capacitors, capacitor parts, etc., can solve the problems of working electrolyte leakage failure and failure to achieve higher withstand voltage values, and improve product leakage values. Boosting speed, effect of preventing explosion-proof valve activation

Active Publication Date: 2020-09-18
ZHAOQING BERYL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The industrial power supply needs a capacitor that can resist superimposed ripple voltage at the moment of starting to maintain the stability of the whole process, so the capacitor must have the ability to resist superimposed ripple voltage. The aging process solves the problem that the existing capacitor cannot achieve a higher withstand voltage value when the oxide film is repaired during the aging process, and can ensure that the capacitor of the present invention can effectively prevent the capacitor from stacking large ripples and high voltages when encountering abnormal rises in the mains power in different regions. The lower explosion-proof valve operates to avoid leakage of working electrolyte and failure

Method used

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  • Ultrahigh-voltage aluminum electrolytic capacitor and manufacturing method thereof

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Embodiment 1

[0034] This embodiment provides a method for manufacturing an ultra-high voltage aluminum electrolytic capacitor, the size of which is 18*50, and the method includes the following steps:

[0035] (1) Core package winding: Electrolytic paper is inserted between the anode foil and the cathode foil to form a core package.

[0036] Among them, the anode foil has a withstand voltage of 690V and a specific volume of 0.46μf / cm 2 ; Before step (1), immerse the anode foil before winding in the chemical conversion solution for chemical conversion repair treatment and phosphorus treatment, wherein the chemical conversion solution contains 10wt% boric acid, 15wt% ammonium adipate, and the balance is water The mixed acid turns into liquid. The phosphorus treatment refers to phosphoric acid treatment at 55-70°C.

[0037] Wherein, the electrolytic paper is a 4-layer composite electrolytic paper.

[0038] (2) Impregnation step: immerse the wound core package in the electrolyte solution for...

Embodiment 2

[0044] This embodiment provides a method for manufacturing an ultra-high voltage aluminum electrolytic capacitor, the size of which is 18*50, and the method includes the following steps:

[0045] (1) Core package winding: Electrolytic paper is inserted between the anode foil and the cathode foil to form a core package.

[0046] Among them, the anode foil has a withstand voltage of 690V and a specific volume of 0.46μf / cm 2 ;Before step (1), immerse the anode foil before winding in the chemical conversion treatment and phosphorus treatment, wherein the chemical conversion solution contains 5wt% boric acid, 15.5wt% organic acid, and the balance is pure water of the chemical solution. The phosphorus treatment refers to phosphoric acid treatment at 55-70°C.

[0047] Wherein, the electrolytic paper is a 4-layer composite electrolytic paper.

[0048] (2) Impregnation step: immerse the wound core package in the electrolyte solution for impregnation treatment, and adopt circular vac...

Embodiment 3

[0054] This embodiment provides a method for manufacturing an ultra-high voltage aluminum electrolytic capacitor, the size of which is 18*50, and the method includes the following steps:

[0055] (1) Core package winding: Electrolytic paper is inserted between the anode foil and the cathode foil to form a core package.

[0056] Among them, the anode foil has a withstand voltage of 690V and a specific volume of 0.46μf / cm 2 ; Before step (1), immerse the anode foil before winding in the chemical conversion treatment and phosphorus treatment, wherein the chemical conversion solution is a pure boric acid conversion solution containing 25wt% boric acid and the balance is water. The phosphorus treatment refers to phosphoric acid treatment at 55-70°C.

[0057] Wherein, the electrolytic paper is a 4-layer composite electrolytic paper.

[0058] (2) Impregnation step: immerse the wound core package in the electrolyte solution for impregnation treatment, and adopt circular vacuuming an...

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Abstract

The invention discloses an ultrahigh-voltage aluminum electrolytic capacitor and a manufacturing method thereof. The invention discloses a method for manufacturing an ultrahigh-voltage aluminum electrolytic capacitor. The method comprises the following steps of (1) winding a core package, namely winding electrolytic paper between an anode foil and a cathode foil to form the core package, (2) an impregnation step: immersing the wound core package into an electrolyte for impregnation treatment, (3) a packaging step: wrapping the impregnated core package into a shell and sealing the shell with arubber plug, and (4) an aging step: carrying out segmented boosting to 650V at normal temperature, then carrying out hot charging and voltage stabilization for a period of time at 550V, then carryingout boosting from 0V to 650V at a time for a period of time, and ending aging. The working voltage of the ultrahigh-voltage aluminum electrolytic capacitor manufactured by the manufacturing method is500V, but the peak value of the ultrahigh-voltage aluminum electrolytic capacitor can reach 650V when the mains supply is subjected to an accident.

Description

technical field [0001] The invention relates to the technical field of capacitor manufacturing, in particular to an ultra-high voltage aluminum electrolytic capacitor and a manufacturing method thereof. Background technique [0002] The application technology of industrial power supply is quite mature. Nowadays, international brands include: Schneider APC, Emerson, Eaton, etc. Domestic brands include: Huawei, Santak, Jinshengyang, etc. They have made indelible contributions to social development, technological innovation, and network services. Promoting the arrival of 5G for all human beings, the future Internet of Things will connect people and things to bring better convenience, all of which are inseparable from industrial power supply services. The mains power of the power grid is converted by the power supply. Designers cannot do without high-voltage aluminum electrolytic capacitors when converting AC mains power to DC voltage. At present, the instantaneous arrival volta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/035H01G9/08
CPCH01G9/08H01G9/00H01G9/035
Inventor 刘高树刘泳澎陈羿廖梅君赖凤英
Owner ZHAOQING BERYL ELECTRONICS TECH
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