Self-healing high-voltage dry-type capacitor

A capacitor and self-healing technology, applied in the field of capacitors, can solve problems such as increased charge and discharge time, and achieve the effects of increasing power, increasing maximum power density, and increasing diffusion rate

Inactive Publication Date: 2020-06-12
NINGBO JIANGBEI GOFRONT HERONG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage is that using activated carbon capacitors will cause a substantial increase in the overall charge and discharge time

Method used

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Embodiment 1

[0029] please see figure 1 Cooperate Figure 6 The presented content, the present invention is about a self-healing high-voltage dry capacitor, which is characterized in that it includes:

[0030] Housing 1, self-healing high-voltage dry-type capacitor body 2, the self-healing high-voltage dry-type capacitor body 2 is arranged in the housing 1, and the self-healing high-voltage dry-type capacitor body 2 includes a pole plate 21, The pole plate 21 includes a substrate 211, and an activated carbon cloth (activated carbon cloth, ACC) 212 is arranged on the surface of the substrate 211. The material of the activated carbon fiber cloth 212 is made of polyacrylonitrile (polyacrylonitrile, PAN). The surface of the activated carbon fiber cloth 212 is provided with carbon nanotubes (Carbon Nanotube, CNT) 213 .

[0031] Since the carbon nanotubes 213 contribute to the diffusion rate of ions in the electrode 21, the shortcomings of the conventional activated carbon fiber cloth are impr...

Embodiment 2

[0033] please see figure 2 Cooperate Figure 6 Presented content, the following begins to introduce the manufacturing method of the polar plate 21:

[0034] First, the activated carbon fiber cloth 212 is arranged on the surface of the substrate 211, wherein the specific surface area of ​​the activated carbon fiber cloth 212 is preferably 1126m 2 / g, the average fiber diameter is preferably 6-7 μm. Put the substrate 211 into the magnetron sputtering chamber, and then evacuate the magnetron sputtering chamber to a vacuum, preferably to a vacuum degree of 2*10 -5 torr so far. Next, argon gas is passed into the magnetron sputtering chamber as a working gas, and after pre-plating for a period of time, iron-silicon (Fe—Si) catalyst is sputtered.

[0035] Put the substrate 211 into the cavity of a microwave plasma chemical vapor deposition system (Microwave Plasma Chemical Vapor Deposition, MPCVD), and then preferably pump the cavity of the microwave plasma chemical vapor deposi...

Embodiment 3

[0037] please see image 3 , the electrolyte of the self-healing high-voltage dry capacitor body is preferably a copolymerized polymer of polyacrylonitrile grafted block polyetherdiamine. In the container, mix cerium ammonium nitrate and nitric acid aqueous solution and then add it into the container, and then add the acrylonitrile into the container after the reaction is completed, and after standing for a period of time, finally obtain the polyacrylonitrile grafted block polyether diamine copolymerized polymer, and then the polyacrylonitrile-grafted block polyether diamine copolymerized polymer was washed several times with polymer water and acetone, and then placed in a ventilated place for drying. After the drying is completed, it is put into dimethylamide for final purification and precipitation. In this way, using the polyacrylonitrile-grafted block polyetherdiamine copolymer polymer as a colloidal electrolyte has better energy storage performance, can increase the capa...

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Abstract

The invention discloses a self-healing high-voltage dry type capacitor. The self-healing high-voltage dry-type capacitor comprises a shell and a self-healing high-voltage dry-type capacitor body, wherein the self-healing high-voltage dry-type capacitor body is arranged in the shell, the self-healing high-voltage dry-type capacitor body comprises a polar plate, the polar plate comprises a substrate, activated carbon fiber cloth is arranged on the surface of the substrate, the activated carbon fiber cloth is made of polyacrylonitrile, and a nano carbon tube is arranged on the surface of the activated carbon fiber cloth. According to the invention, the characteristics of the carbon nanotubes are combined with the advantages of the activated carbon fiber cloth, so the carbon nanotube compositematerial has the advantages of high power density, rapid charging and discharging, large capacitance value, long service life and the like.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a self-healing high-voltage dry capacitor. Background technique [0002] The basic principle of a capacitor is composed of two conductive sheets that are parallel to each other and separated by space or a dielectric. When the current flows into the capacitor, the two conductive sheets will start to accumulate positive and negative charges of equal quantity, making the gap between the two conductive sheets The potential difference gradually increases, and because of this characteristic of the capacitor, the capacitor is often used as an energy storage component. [0003] However, the most common problem faced when capacitors are used as energy storage components is the problem between energy storage capacity and charge and discharge rate. For example, although activated carbon has the advantage of a large surface area, when activated carbon is used as a plate of a capacitor, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/008H01G4/015
CPCH01G4/008H01G4/015
Inventor 童克锋赵凤龙徐刚洪磊
Owner NINGBO JIANGBEI GOFRONT HERONG ELECTRIC
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