A kind of ultra-high voltage aluminum electrolytic capacitor and its manufacturing method

A technology for aluminum electrolytic capacitors and manufacturing methods, which is applied in the direction of electrolytic capacitors, capacitors, capacitor parts, etc., can solve problems such as inability to achieve higher withstand voltage values, working electrolyte leakage failures, etc., to avoid the impact of rising mains power, Ensure low impedance, withstand superimposed ripple and high voltage, and increase the effect of adsorption

Active Publication Date: 2022-07-26
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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  • A kind of ultra-high voltage aluminum electrolytic capacitor and its manufacturing method

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Embodiment 1

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

[0035] (1) Core package winding: The electrolytic paper is interposed between the anode foil and the cathode foil and the core package is wound.

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

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

[0038] (2) Impregnation step: Immerse the wo...

Embodiment 2

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

[0045] (1) Core package winding: The electrolytic paper is interposed between the anode foil and the cathode foil and the core package is wound.

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

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

[0048] (2) Impregnation step: Immerse the wound core package ...

Embodiment 3

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

[0055] (1) Core package winding: The electrolytic paper is interposed between the anode foil and the cathode foil and the core package is wound.

[0056] Among them, the anode foil withstand voltage is 690V, and the specific capacity is 0.46μf / cm 2 ; Before step (1), the anode foil before winding is immersed in a chemical conversion solution for chemical conversion repair treatment and phosphorus treatment, wherein the chemical conversion liquid is a pure boric acid conversion liquid containing 25wt% boric acid and the balance is water. The phosphorus treatment refers to phosphoric acid treatment at 55 to 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 el...

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Abstract

The invention discloses an ultra-high voltage aluminum electrolytic capacitor and a manufacturing method thereof. A method for manufacturing an ultra-high voltage aluminum electrolytic capacitor, comprising the following steps: (1) core wrapping: interposing electrolytic paper between an anode foil and a cathode foil to wrap a core wrap; (2) impregnation step: wrapping the wound The core pack is immersed in the electrolyte for impregnation treatment; (3) Encapsulation step: put the impregnated core pack into the shell and seal it with a rubber plug; (4) Aging step: step-up to 650V at room temperature, and then hot-charge at 550V Regulate the voltage for a period of time, and then boost the voltage from 0V to 650V for a period of time to end the aging. The ultra-high voltage aluminum electrolytic capacitor prepared by the manufacturing method of the present invention has a working voltage of 500V, but can withstand the accidental instantaneous peak value of commercial power supply reaching 650V.

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. Now international brands include Schneider APC, Emerson, Eaton, etc., and domestic brands include Huawei, Santak, Jinshengyang, etc. They have made indelible contributions to social development, technological innovation, and network services. It has promoted the arrival of 5G for all mankind, and the future Internet of Things will connect people and things to bring better convenience. These are inseparable from industrial power services. The power grid is converted by the power supply. The designer cannot do without high-voltage aluminum electrolytic capacitors when converting the AC power into DC voltage. At present, the instantaneous arrival voltage of the mains at home and ...

Claims

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Application Information

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Patent Type & Authority Patents(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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