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A safety aluminum electrolytic capacitor against 4kv lightning strike

A technology of electrolytic capacitors and safety aluminum, which is applied to capacitor parts, capacitor shells/packages, etc., to achieve the effect of improving flashover voltage and lightning surge resistance

Active Publication Date: 2021-02-02
ZHAOQING BERYL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aluminum electrolytic capacitor can only withstand the instantaneous high-voltage impact above 2.2KV, and cannot withstand a higher instantaneous high-voltage impact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of anti-4KV anti-lightning safety aluminum electrolytic capacitor, its preparation method steps are as follows:

[0029] 1) Cutting, cutting cathode foil, anode foil and electrolytic paper, wherein the electrolytic paper includes inner electrolytic paper and outer electrolytic paper;

[0030] 2) Nail winding, through the packaging layer, the positive electrode guide pin and the negative electrode guide pin are nailed to the anode foil and the cathode foil respectively, and the electrolytic paper, cathode foil, and anode foil are laminated into electrolytic paper-cathode foil-electrolytic paper-anode foil A layered structure, and then wind the layered structure into a core package, wherein the electrolytic paper includes an inner layer of electrolytic paper and an outer layer of electrolytic paper, and the inner layer of electrolytic paper is located on the side of the corresponding cathode foil or anode foil; the inner layer The tightness of the electrolytic pape...

Embodiment 2

[0038] This embodiment is basically the same as Implementation 1, except that in this embodiment, the electrolyte includes 30% of the main solvent, 28% of the auxiliary solvent, 28% of the solute, 12% of the flash voltage booster, and 2% of other additives, each component is 100% in total; wherein, the main solvent is diethylene glycol and polyglyceryl ether, and the mass ratio of the two is 2:1; the auxiliary solvent is methoxypolyethylene glycol and carbonic acid Vinyl ester, the mass ratio of the two is 1:1; the solute is ammonium azelate, 2,7-dibutylsuberic acid and cetyl dioic acid, wherein ammonium azelate, 2,7 -The mass ratio of dibutyl suberic acid and hexadecyl dioic acid is 1:2:1; The flash voltage booster is boric acid polyester gel, polyoxypropylene polyglyceryl ether and citric acid, wherein, The mass ratio of boric acid polyester gel, polyoxypropylene polyglyceryl ether and citric acid is 4:1:2; Described other additives are p-nitrobenzyl alcohol, polyethylene gl...

Embodiment 3

[0040] This embodiment is basically the same as Embodiment 1. The difference is that in this embodiment, the electrolyte includes 48% of the main solvent, 20% of the auxiliary solvent, 20.8% of the solute, 10% of the flash voltage booster, and 1.2% of other additives, the total of each component is 100%.

[0041] Wherein, the main solvent is diethylene glycol and polyglyceryl ether, the mass ratio of the two is 2:1; the auxiliary solvent is methoxypolyethylene glycol and ethylene carbonate, and the mass ratio of the two is 1:1; The solute is ammonium azelate, 2,7-dibutyl suberic acid and hexadecyl dioic acid, wherein, ammonium azelate, 2,7-dibutyl suberic acid and The mass ratio of acid is 1:2:1; Described flash voltage booster is boric acid polyester gel, polyoxypropylene polyglyceryl ether and citric acid, wherein, boric acid polyester gel, polyoxypropylene polyglyceryl ether and The mass ratio of citric acid is 4:1:2; Described other additives are p-nitrobenzyl alcohol, po...

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Abstract

The invention discloses a 4KV anti-lightning safety aluminum electrolytic capacitor, which comprises a shell and a core package set in the shell, the core package is soaked with an electrolyte with a flash voltage above 850V, the core package It is formed by overlapping and winding anode foil, cathode foil and electrolytic paper, wherein the same side of the cathode foil and the anode foil are respectively provided with electrolytic paper as a substrate, and the electrolytic paper includes an inner layer of electrolytic paper and an outer layer of electrolytic paper, The tightness of the inner electrolytic paper and the outer electrolytic paper is not less than 0.95g / cm 3 , the total thickness of the inner electrolytic paper and the outer electrolytic paper is 70‑90 μm. The anti-4.0KV lightning strike safety aluminum electrolytic capacitor of the present invention improves the anti-lightning surge impact capability of the aluminum electrolytic capacitor to 4.0KV through the improvement of process steps and conditions and overall coordination.

Description

technical field [0001] The invention relates to the technical field of electrolytic capacitors, in particular to a safety aluminum electrolytic capacitor resistant to 4KV lightning strikes. Background technique [0002] At present, electronic products have become an indispensable part of modern life, and various types of electronic products and electronic equipment are widely used in all aspects of people's production and life. Among them, the surge generated in the power grid will cause impact interference to electronic products, and the formation of the surge is mainly the switching transient of the power system and the lightning strike transient. Therefore, the anti-lightning safety of electronic products is a factor that must be considered for electronic products. Aluminum electrolytic capacitors, as the first filter element following the rectification of electronic circuits, are one of the indispensable components in the power supply of various electronic products. If...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/004H01G9/08
CPCH01G9/004H01G9/08
Inventor 易翀刘泳澎陈家活李琳黄汝梅江静常梁俊杰黎丽银
Owner ZHAOQING BERYL ELECTRONICS TECH
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