CN102486966A - Aluminium electrolytic capacitor - Google Patents
Aluminium electrolytic capacitor Download PDFInfo
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- CN102486966A CN102486966A CN2010105746674A CN201010574667A CN102486966A CN 102486966 A CN102486966 A CN 102486966A CN 2010105746674 A CN2010105746674 A CN 2010105746674A CN 201010574667 A CN201010574667 A CN 201010574667A CN 102486966 A CN102486966 A CN 102486966A
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- electrolytic capacitor
- aluminium electrolytic
- capacitor element
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- heat conduction
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Abstract
The invention relates to an aluminium electrolytic capacitor comprising a housing, a capacitor element, a heat conduction material and an electrolyte solution. The capacitor element, which is arranged in the housing, includes an anode foil, a cathode foil and an isolator, wherein the isolator is arranged between the anode foil and the cathode foil. The heat conduction material is arranged between the capacitor element and the housing as well as is in contact connection with the capacitor element and the housing. And an insulating film is covered on the edge surface of the housing. According to the invention, the aluminium electrolytic capacitor has the following advantages that: service life of the capacitor element is prolonged; durability of the electrolytic capacitor is enhanced; and the heat radiation performance is good; and moreover, the aluminium electrolytic capacitor has a simple design structure and low manufacturing cost.
Description
Technical field
The present invention relates to a kind of electrolytic capacitor, especially a kind of aluminium electrolytic capacitor.
Background technology
Capacitor is a kind of electric component of routine, and is widely used in various electric equipment products and the electronic product, and it is mainly used in the noise filter of power circuit, digital circuit.
Now; Various types of electrolytic capacitors are known by the people; Comprising aluminium electrolytic capacitor; Anode foils and Cathode Foil are adopted in the preparation of conventional aluminium electrolytic capacitor, and between anode foils and Cathode Foil, insert spacer and constitute laminate, subsequently this laminate are curled and put into electrolyte solution and flood.
The characteristic of electrolyte solution is the key factor of decision electrolytic capacitor performance; Miniaturization along with electrolytic capacitor; Used male or female with high surface area through the etching preparation; And the resistivity of capacitor is increased, so the electrolyte solution that requires in this capacitor, to use has lower resistivity and higher conductivity.
Summary of the invention
In order to overcome above defective, the technical problem that the present invention will solve is: propose a kind of long service life, aluminium electrolytic capacitor simple in structure.
The technical scheme that the present invention adopted is: a kind of aluminium electrolytic capacitor; Comprise shell, capacitor element, Heat Conduction Material and electrolyte solution; Said capacitor element is arranged in the said shell; Said capacitor element comprises anode foils, Cathode Foil and spacer, and said spacer is arranged between anode foils and the Cathode Foil, and said Heat Conduction Material is arranged between said capacitor element and the said shell; For contact is connected, the edge surface of said shell is coated with dielectric film between said Heat Conduction Material and said capacitor element and the said shell.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further said shell processed by aluminum or aluminum alloy.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further said spacer is a barrier paper.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further cations is no more than 500ppm in the said barrier paper.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further said Heat Conduction Material is the Heat Conduction Material that in host material, scatters alumina particles.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further said host material is a synthetic resin.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further the average diameter of said alumina particles is 0.5～5um.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further said dielectric film is a pellumina.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor further comprises the electrolyte solution of said electrolyte solution for being made up of the salt of organic solvent, water and inorganic acid or this inorganic acid.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further said organic solvent is proton solvent, aprotic solvent or their mixture.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further the salt of said inorganic acid or this inorganic acid is selected from phosphoric acid, phosphorous acid, hypophosphorous acid and ammonium, sodium, potassium, amine and alkylammonium salt.
According to another preferred embodiment, a kind of aluminium electrolytic capacitor comprises that further said electrolyte solution also comprises a kind of in carbohydrate, nitro compound, gluconic acid or the glucolactone.
The invention has the beneficial effects as follows: prolong the useful life of capacitor element, strengthened the durability of electrolytic capacitor, perfect heat-dissipating, and the project organization of this electrolytic capacitor is simple, and manufacturing cost is lower.
Description of drawings
Fig. 1 is the structural representation of the preferred embodiments of the present invention;
Fig. 2 is the structural representation of capacitor element of the present invention.
Among the figure: 1, shell, 2, capacitor element, 21, anode foils, 22, spacer, 23, Cathode Foil, 3, terminals, 4, lead, 5, Heat Conduction Material, 6, dielectric film, 7, encapsulant.
Embodiment
Combine accompanying drawing and preferred embodiment that the present invention is done further detailed explanation now.These accompanying drawings are the sketch map of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
A kind of aluminium electrolytic capacitor as shown in Figure 1; Comprise shell 1, capacitor element 2, Heat Conduction Material 5 and electrolyte solution; Said capacitor element 2 is arranged in the said shell 1; Said capacitor element 2 comprises anode foils 21, Cathode Foil 23 and spacer 22, and said spacer 22 is arranged between anode foils 21 and the Cathode Foil 23, and said Heat Conduction Material 5 is arranged between said capacitor element 2 and the said shell 1; For contact is connected, the edge surface of said shell 1 is coated with dielectric film 6 between said Heat Conduction Material 5 and said capacitor element 2 and the said shell 1.
Shown in Fig. 1-2; The capacitor element 2 that has flooded electrolyte solution is included in the shell 1; This capacitor element 2 is curl laminar structured, comprises anode foils 21, Cathode Foil 23 and the spacer 22 between anode foils 21 and Cathode Foil 23, and wherein anode foils 21 is to make whole surface coverage oxide film through anodization as raw-material high-purity aluminum foil surface; Cathode Foil 23 is to increase surface area through etched surfaces; Then anode foils 21 and Cathode Foil 23 mutual opposites are placed, and insert barrier paper with formation stratiform thing, and then the stratiform thing is curled with the capacitor element 2 of preparation coiled structure in the centre.Subsequently; Advance impregnated in capacitor produced element 2 in the electrolyte solution; The capacitor element of dipping electrolyte solution is placed shell 1; Again the peristome of housing is adopted encapsulant 7 sealings, two leads 4 insert in the intake of lead 4 of encapsulants 7, and then it is sealed so that the leakage of electrolyte solution not to take place fully.
The mixture of electrolyte solution for being made up of the salt of organic solvent, water and inorganic acid or this inorganic acid among the present invention: wherein organic solvent is proton solvent, aprotic solvent or their mixture; The salt of inorganic acid or this inorganic acid is selected from phosphoric acid, phosphorous acid, hypophosphorous acid and ammonium, sodium, potassium, amine and alkylammonium salt, and this electrolyte solution also comprises a kind of in carbohydrate, nitro compound, gluconic acid or the glucolactone.
Electrolytical consumption can suitably be confirmed according to various factors in the electrolyte solution of the present invention, reaches the desired performance of capacitor that finally obtains, type, composition and the quantity of solvent for use, used electrolytical type like electrolyte solution.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must confirm its technical scope according to the claim scope.
Claims (10)
1. aluminium electrolytic capacitor; Comprise shell (1), capacitor element (2), Heat Conduction Material (5) and electrolyte solution; It is characterized in that: said capacitor element (2) is arranged in the said shell (1); Said capacitor element (2) comprises anode foils (21), Cathode Foil (23) and spacer (22); Said spacer (22) is arranged between anode foils (21) and the Cathode Foil (23); Said Heat Conduction Material (5) is arranged between said capacitor element (2) and the said shell (1), and for contact is connected, the edge surface of said shell (1) is coated with dielectric film (6) between said Heat Conduction Material (5) and said capacitor element (2) and the said shell (1).
2. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that: said shell (1) is processed by aluminum or aluminum alloy.
3. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that: said spacer (22) is a barrier paper.
4. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that: cations is no more than 500ppm in the said barrier paper.
5. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that: said Heat Conduction Material (5) is the Heat Conduction Material that in host material, scatters alumina particles.
6. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that: said host material is a synthetic resin.
7. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that: the average diameter of said alumina particles is 0.5～5um.
8. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that: said dielectric film (6) is a pellumina.
9. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that: the electrolyte solution of said electrolyte solution for being made up of the salt of organic solvent, water and inorganic acid or this inorganic acid.
10. a kind of aluminium electrolytic capacitor according to claim 1 is characterized in that: said organic solvent is proton solvent, aprotic solvent or their mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105746674A CN102486966A (en) | 2010-12-06 | 2010-12-06 | Aluminium electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105746674A CN102486966A (en) | 2010-12-06 | 2010-12-06 | Aluminium electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102486966A true CN102486966A (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105746674A Pending CN102486966A (en) | 2010-12-06 | 2010-12-06 | Aluminium electrolytic capacitor |
Country Status (1)
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| CN (1) | CN102486966A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839681A (en) * | 2012-11-21 | 2014-06-04 | 东莞市东阳光电容器有限公司 | Aluminum electrolytic capacitor |
| CN105280397A (en) * | 2014-05-26 | 2016-01-27 | 中国科学院长春应用化学研究所 | Aqueous electrolyte and super-capacitor |
| CN108470624A (en) * | 2018-05-21 | 2018-08-31 | 长兴金新电子有限公司 | A kind of Anti-pressure aluminium electrolutic capacitor |
-
2010
- 2010-12-06 CN CN2010105746674A patent/CN102486966A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839681A (en) * | 2012-11-21 | 2014-06-04 | 东莞市东阳光电容器有限公司 | Aluminum electrolytic capacitor |
| CN105280397A (en) * | 2014-05-26 | 2016-01-27 | 中国科学院长春应用化学研究所 | Aqueous electrolyte and super-capacitor |
| CN105280397B (en) * | 2014-05-26 | 2018-07-03 | 中国科学院长春应用化学研究所 | A kind of aqueous electrolyte and ultracapacitor |
| CN108470624A (en) * | 2018-05-21 | 2018-08-31 | 长兴金新电子有限公司 | A kind of Anti-pressure aluminium electrolutic capacitor |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120606 |