Charging-discharging module based on giant permittivity ceramic capacitor and preparation method of charging-discharging module

A technology of ceramic capacitors and charging and discharging modules, applied in the field of capacitors, can solve problems such as prolonging the working time of electrical equipment, and achieve the effects of fast charging and discharging rate, no chemical pollution, and fast charging and discharging speed.

Active Publication Date: 2015-07-01
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the above-mentioned shortcomings of existing supercapacitors, and provide features such as fast charge and discharge rate, large capacitance, small volume, high temperature stability, no pollution, long life, miniaturization and easy portability, etc., which can be used in A charge-discharge module based on a large permittivity ceramic capacitor and its preparation method that quickly supplies power to mobile devices such as mobile phones and notebook computers when the power is insufficient, and effectively prolongs the working time of electrical equipment (including mobile phones, notebook computers, etc.)

Method used

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  • Charging-discharging module based on giant permittivity ceramic capacitor and preparation method of charging-discharging module
  • Charging-discharging module based on giant permittivity ceramic capacitor and preparation method of charging-discharging module
  • Charging-discharging module based on giant permittivity ceramic capacitor and preparation method of charging-discharging module

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Embodiment 1

[0039] In this embodiment, a large permittivity ceramic capacitor monomer is made with copper calcium titanate ceramics as the intermediate dielectric layer 3, and the aluminum oxide nano-insulation layer is the lower breakdown-resistant layer 2 and the upper breakdown-resistant layer 4. To form a charging and discharging module of a giant permittivity ceramic capacitor, the specific steps are:

[0040] 1) Preparation of copper calcium titanate ceramics by solid state reaction method. Mix calcium carbonate, copper oxide and titanium oxide in a molar ratio of 1:3:4, and pre-fire the mixed powder at 850°C for 5 hours to form copper calcium titanate powder. Copper calcium titanate powder, 6wt% Polyvinyl alcohol aqueous solution, glycerin and defoaming agent are mixed evenly at a mass ratio of 40:30:5:0.2, and a green sheet with a thickness of 1 μm is prepared by casting technology, and the green sheet is sintered in an electric furnace at 1060 ° C for 10 hours to obtain copper ti...

Embodiment 2

[0046] In this embodiment, a large permittivity ceramic capacitor monomer is made with copper calcium titanate ceramics as the intermediate dielectric layer 3, and the titanium oxide nano-insulation layer as the lower breakdown-resistant layer 2 and the upper breakdown-resistant layer 4. To form a charging and discharging module of a giant permittivity ceramic capacitor, the specific steps are:

[0047] 1) Preparation of copper calcium titanate ceramics by solid state reaction method. Mix calcium carbonate, copper chloride and titanium oxide in a molar ratio of 1:3:4, and pre-fire the mixed powder at 950°C for 2 hours to form copper calcium titanate powder. Copper calcium titanate powder, 6wt % polyvinyl alcohol aqueous solution, glycerol and antifoaming agent were mixed evenly at a mass ratio of 50:45:5:0.2, and a green sheet with a thickness of 100 μm was prepared by tape casting technology, and the green sheet was sintered in an electric furnace at 1080 ° C for 5 hours to o...

Embodiment 3

[0053] In this embodiment, a large permittivity ceramic capacitor monomer is made with copper calcium titanate ceramics as the intermediate dielectric layer 3, and the silicon oxide nano-insulation layer as the lower breakdown-resistant layer 2 and the upper breakdown-resistant layer 4. To form a charging and discharging module of a giant permittivity ceramic capacitor, the specific steps are:

[0054] 1) Preparation of copper calcium titanate ceramics by solid state reaction method. Mix calcium nitrate, copper oxide and titanium oxide in a molar ratio of 1:3:4, and pre-fire the mixed powder at 900°C for 3 hours to form copper calcium titanate powder. Copper calcium titanate powder, 6wt% Polyvinyl alcohol aqueous solution, glycerin and defoaming agent are mixed evenly at a mass ratio of 45:40:5:0.2, and a green sheet with a thickness of 2000 μm is prepared by casting technology, and the green sheet is sintered in an electric furnace at 1100 ° C for 2 hours to obtain copper tit...

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Abstract

The invention relates to a charging-discharging module based on a giant permittivity ceramic capacitor and a preparation method of the charging-discharging module. The module is provided with at least two giant permittivity ceramic capacitor bodies, wherein the two giant permittivity ceramic capacitor bodies are connected in serial or / and in parallel, and each giant permittivity ceramic capacitor body is sequentially provided with a lower silver electrode layer, a lower electric-breakdown-resistant layer, an intermediate dielectric layer, an upper electric-breakdown-resistant layer and an upper silver electrode layer. The preparation method comprises the following steps of preparing the intermediate dielectric layer of the giant permittivity ceramic capacitor body; covering the lower electric-breakdown-resistant layer on the lower surface of the intermediate dielectric layer; covering the upper electric-breakdown-resistant layer on the upper surface of the intermediate dielectric layer; coating conductive silver paste on the lower surface of the lower electric-breakdown-resistant, and thermally treating the silver paste to obtain the lower silver electrode layer; coating conductive silver paste on the upper surface of the upper electric-breakdown-resistant layer, thermally treating the silver paste to obtain the upper silver electrode layer, and obtaining the giant permittivity ceramic capacitor body; and assembling the produced giant permittivity ceramic capacitor bodies in serial or / and in parallel to obtain the charging-discharging module based on the giant permittivity ceramic capacitor.

Description

technical field [0001] The invention relates to capacitors, in particular to a charging and discharging module based on a giant permittivity ceramic capacitor and a preparation method thereof. Background technique [0002] Mobile electrical equipment such as mobile phones and laptops have become indispensable tools in modern daily work and life, with more and more functions and more and more power requirements. Most of these mobile electrical devices use lithium-ion chemical batteries as energy storage components. The chemical batteries themselves have disadvantages such as slow charging and discharging, small energy storage, limited cycle life, and potential safety hazards, which affect the long-term normal use of mobile electrical devices. [0003] As the world's energy crisis is becoming more and more serious, the wide application of new energy sources such as solar energy and wind energy has become an effective way to solve the energy shortage in the world, and thus wind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/38H01G4/002H01G4/005H01G4/12
Inventor 熊兆贤陈拉薛昊李伟张敏叶何兰张国锋肖小朋
Owner XIAMEN UNIV
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