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Method for reducing equivalent series resistance of laminated capacitor

A technology of equivalent series resistance and stacked capacitors, which is applied in the field of capacitors, can solve problems such as inability to break through, low ESR value, cumbersome steps, etc., and achieve the effects of improving capacity and leakage current pass rate, reducing ESR, and good heat resistance

Pending Publication Date: 2022-06-24
ZHAOQING BERYL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these existing technologies can reduce ESR, the reduction is limited, and the steps are cumbersome, which increases the cost and cannot break through the extremely low ESR value.

Method used

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  • Method for reducing equivalent series resistance of laminated capacitor
  • Method for reducing equivalent series resistance of laminated capacitor

Examples

Experimental program
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Effect test

Embodiment 1

[0035]A method for reducing the equivalent series resistance of a multilayer capacitor, comprising: firstly impregnating a monomer solution at a low temperature, and then impregnating an oxidizing solution at a low temperature, then removing the foil from the oxidizing solution and blowing off excess excess on the sides of the foil with a high-pressure air curtain For the oxidation solution, the above steps are one cycle; after one cycle is performed, the monomer solution is impregnated once and dried.

[0036] Among them, the weight percentage of each component of the monomer solution is: monomer pyrrole 9.5wt%, solvent water 85wt%, dopant sodium polystyrene sulfonate 5wt%, auxiliary γ-mercaptopropyl triethoxysilane 0.1 wt% with fluorinated acrylic copolymer 0.4 wt%.

[0037] The temperature at which the monomer solution was impregnated was 1°C, and the time for which the monomer solution was impregnated was 95 seconds.

[0038] The weight percentage of each component of the...

Embodiment 2

[0045] A method for reducing the equivalent series resistance of a multilayer capacitor, comprising: firstly impregnating a monomer solution at a low temperature, and then impregnating an oxidizing solution at a low temperature, then removing the foil from the oxidizing solution and blowing off excess excess on the sides of the foil with a high-pressure air curtain The oxidation solution, the above steps are one cycle; after 6 cycles, the monomer solution is impregnated once and dried.

[0046] Among them, the weight percentage of each component of the monomer solution is: monomer 3,4-ethylenedioxythiophene 5.5wt%, solvent ethanol 90wt%, dopant polyvinylsulfonic acid 2.75wt%, auxiliary γ-mercaptopropyl 1 wt % of triethoxysilane and 0.75 wt % of fluorinated acrylic copolymer.

[0047] The temperature at which the monomer solution was impregnated was 4°C, and the time for which the monomer solution was impregnated was 50 seconds.

[0048] The weight percentage of each component...

Embodiment 3

[0055] A method for reducing the equivalent series resistance of a multilayer capacitor, comprising: firstly impregnating a monomer solution at a low temperature, and then impregnating an oxidizing solution at a low temperature, then removing the foil from the oxidizing solution and blowing off excess excess on the sides of the foil with a high-pressure air curtain For the oxidation solution, the above steps are one cycle; after 11 cycles, the monomer solution is impregnated once and dried.

[0056] Among them, the weight percentage of each component of the monomer solution is: monomer aniline 1.5wt%, solvent water 70wt% and ethanol 25wt%, dopant m-sulfobenzamide 0.5wt%, auxiliary γ-mercaptopropyl tris Ethoxysilane 1wt% and potassium dodecyl sulfate 2wt%.

[0057] The temperature at which the monomer solution was impregnated was 6° C., and the time for which the monomer solution was impregnated was 5 seconds.

[0058] The weight percentage of each component of the oxidation s...

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Abstract

The invention relates to the technical field of capacitors, in particular to a method for reducing the equivalent series resistance of a laminated capacitor, which comprises the following steps of: firstly impregnating a foil with a monomer solution at a low temperature, then impregnating the foil with an oxidizing solution at a low temperature, then removing the foil from the oxidizing solution, and blowing off the excessive oxidizing solution on the side surface of the foil by adopting a high-pressure air curtain to form a cycle; and after at least one cycle, impregnating with a monomer solution and drying. According to the preparation method, a low-temperature monomer solution and oxidation solution impregnation technology is adopted, so that conductive macromolecules with relatively small particle size and higher bulk density can be formed, and the conductive macromolecules with higher conductivity and better heat resistance can be prepared; by adopting the technology of removing the redundant oxidizing solution through high-pressure air, the oxidizing solution can permeate more easily and be attached to deep holes of the anode formation aluminum foil more firmly, and conductive macromolecules which are more compact, high in binding force, good in plastic package impact resistance and higher in conductivity can be formed; the ESR of the laminated capacitor is effectively reduced, and the capacity and the qualified rate of leakage current are improved.

Description

technical field [0001] The present application relates to the technical field of capacitors, and more particularly, to a method for reducing the equivalent series resistance of a multilayer capacitor. Background technique [0002] When laminated capacitors are applied to new application fields such as low-power servers, ultra-thin notebook computers, artificial intelligence, Beidou navigation, and big data computing processing, they are required to have lower ESR (equivalent series resistance). [0003] For example, Chinese invention patent CN201510886032.0 discloses a preparation method of a laminated chip polymer solid aluminum electrolytic capacitor, comprising the following steps: (1) pretreatment, (2) pretreatment, (3) chemical polymerization, (4) Aluminum foil repair, (5) electrochemical polymerization, (6) formation of conductive graphite layer, (7) formation of conductive silver layer, (8) lamination and (9) steps such as encapsulation, moisture absorption, aging, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/045H01G9/15
CPCH01G9/0029H01G9/045H01G9/15
Inventor 刘泳澎罗伟陈桃桃张小波
Owner ZHAOQING BERYL ELECTRONICS TECH
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