CN203070933U - Novel nanometer aluminum electrolytic capacitor - Google Patents
Novel nanometer aluminum electrolytic capacitor Download PDFInfo
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- CN203070933U CN203070933U CN 201220723356 CN201220723356U CN203070933U CN 203070933 U CN203070933 U CN 203070933U CN 201220723356 CN201220723356 CN 201220723356 CN 201220723356 U CN201220723356 U CN 201220723356U CN 203070933 U CN203070933 U CN 203070933U
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- cathode foil
- electrolytic capacitor
- electrolytic paper
- electrolyte
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Abstract
The utility model provides a novel nanometer aluminum electrolytic capacitor. The novel nanometer aluminum electrolytic capacitor comprises a cylindrical core cladding, two guide pins led out from one end of the core cladding, two lead wires connected with the guide pins and led out from the guide pins, and a cylindrical aluminum housing sleeved on the periphery of the core cladding. The core cladding comprises an anode foil, a cathode foil and electrolytic paper clamped between the anode foil and the cathode foil. The top of the cathode foil is higher than that of the electrolytic paper. Electrolyte with carboxyl components is attached on the electrolytic paper. Nanometer level A1203 materials are further contained inside the electrolyte. Compared with the prior art, the novel nanometer aluminum electrolytic capacitor, by making the cathode foil exposed in a way to be a certain distance away from the electrolytic paper, increases the heat radiation area of the cathode foil, and improves the heat radiation performances. Meanwhile, by using the carboxyl components inside the electrolyte to suppress esterification reactions and acylation reactions, the aluminum electrolytic capacitor is thus enabled to prevent an ESR increase.
Description
Technical field
The utility model relates to the electric capacity manufacturing technology, relates in particular to a kind of novel nano aluminium electrolytic capacitor with longer life and good heat dispersion.
Background technology
Aluminium electrolytic capacitor is irreplaceable base components in various electronic products, is widely used in the fields such as electric automobile, industrial energy saving product, photovoltaic DC-to-AC converter.In recent years the integrated fast development with the high speed processing technology of electronic devices and components, world market proposes requirements at the higher level to the electric capacity properties of product.Long-life, the development trend that high temperature resistant, the electric current of anti-the high frequency ripple is aluminium electrolytic capacitor.
Traditional aluminium electrolytic capacitor generally includes as lower component: for the protection of the core bag and play fixation the cylindrical shape aluminum hull, be contained in as described in anode in aluminum hull, play negative electrode draw the Cathode Foil of effect, electrolyte, for the electrolytic paper of storing electrolyte isolated cathode and anode paper tinsel, work the lead that connects the effect of drawing, near the aluminum hull top, play the sleeve pipe of the cover plate of sealing installation effect, the aluminium packing ring that plays connection lead and cover plate effect, an insulating effect and insulation spacer etc.Wherein, described anode is generally the aluminum metallic foil material, and it is energized and form oxide-film as working media through burn into; Described electrolyte is actual negative electrode, works the oxide-film effect of repairing.
There are some defects in the aluminium electrolytic capacitor of this quasi-tradition, and for example: the heat on Cathode Foil can't effectively be derived and be caused thermal diffusivity poor, and the preparation of electrolyte and additive are selected the not good decline that causes useful life, specifically:
Capacitor produces heat in the internal resistance of when work, and along with the increase of external voltage electric current, the capacitor internal heat sharply raises, and can affect electric capacity useful life after long-time the use, in the time of seriously, can cause capacitance damage.And, in the conventional roll winding technologe, Cathode Foil and electrolytic paper ride out are basically identical, because the thermal conductivity of electrolytic paper is poor, the heat accumulated on Cathode Foil can not effectively be derived, and causes thermal diffusivity poor.
In addition, general electrolyte contains ammonia or amine etc. usually, easily amidation process occurs and generates compound, causes the conductivity of electrolyte greatly to reduce after long-term the use, cause electrochemical capacitor equivalent series resistance (ESR) to enlarge markedly, reduced ripple current characteristic and useful life.
The electrochemical capacitor Working electrolyte is ion conductor, and the conductivity of electrolyte is one of principal element determined condenser loss, and conductivity is higher, and loss is less.The factor that affects conductivity is a lot, and wherein ionic mobility is higher, and conductivity is also higher.Ionic mobility is to be determined by the ability of additive adsorption charge, and due to the additive processing granularity of using at present, at micron order, so its adsorption efficiency is not high, causes the loss of capacitor larger.
As from the foregoing, traditional aluminium electrolytic capacitor the aspect such as selects all to exist many defects at the preparation of production technology, Working electrolyte and additive, has seriously restricted the performances such as useful life, heat resistance, the electric current of anti-high frequency ripple the, flash over voltage of product.Therefore, necessaryly provide a kind of novel capacitor to solve above-mentioned technical problem.
The utility model content
The technical problem that the utility model solves is to provide a kind of novel nano aluminium electrolytic capacitor, and it can improve thermal diffusivity and improve useful life.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of novel nano aluminium electrolytic capacitor, two cylindrical shape aluminum hulls that go between and be sheathed on core bag periphery that comprise columnar core bag, two guide pins of drawing from core Bao Yiduan, connect guide pin and draw from guide pin, described core bag comprises: anode foils, Cathode Foil and be located in the electrolytic paper between described Cathode Foil and anode foils, the top of described Cathode Foil exceeds described electrolytic paper, has electrolyte on described electrolytic paper.
As the further improvement of the technical program, it is 2-3mm that described Cathode Foil top exceeds described electrolytic paper.
Further improvement as the technical program, described anode foils, electrolytic paper, Cathode Foil, electrolytic paper set gradually respectively the formation four-layer structure from inside to outside, described four-layer structure is reeled and is formed described cylinder formed core bag by winding process, and it is the most inboard that described anode foils is positioned at the core bag.
Compared with prior art; novel nano aluminium electrolytic capacitor described in the utility model is by exposing Cathode Foil the certain distance of electrolytic paper; increased the area of dissipation of Cathode Foil; improved thermal diffusivity; utilize the carboxyl composition in electrolyte to suppress esterification and acylation reaction simultaneously, thereby suppress the ESR increase of electrolytic capacitor.
The accompanying drawing explanation
The cross section view that Fig. 1 is novel nano aluminium electrolytic capacitor described in the utility model.
Fig. 2 be novel nano aluminum electrolytic capacitor core cladding described in the utility model around the time schematic diagram.
The cross section view that Fig. 3 is novel nano aluminium electrolytic capacitor cathode and anode paper tinsel described in the utility model and electrolytic paper structure.
Embodiment
Refer to shown in Fig. 1 and Fig. 2, the utility model provides a kind of novel nano aluminium electrolytic capacitor and preparation method thereof, for solving many deficiencies that conventional art exists, it has improved production technology, Working electrolyte preparation, electrolysis additive, improves the performance of aluminium electrolytic capacitor.
Shown in please refer to the drawing 1, Fig. 2, described aluminium electrolytic capacitor 100 comprises two guide pins 20, the connection guide pin that is wound into columnar core bag 10, draws from core bag 10 1 ends two lead-in wires 30 of drawing from guide pin, the cylindrical shape aluminum hull 40 that is sheathed on core bag 10 peripheries, is coated on the sleeve pipe 50 of aluminum hull periphery, is positioned at core bag 10 tops and fixes the Rubber end 60 of described guide pin 20 and be infiltrated on the electrolyte 70 of described core bag.Described core bag 10 comprises: anode foils 11, Cathode Foil 12 and be located between described Cathode Foil 12 and anode foils 11 and the electrolytic paper 13 in Cathode Foil 12 outsides, described anode foils 11, electrolytic paper 13, Cathode Foil 12, electrolytic paper 13 are 4 layers of structure altogether, and set gradually from inside to outside, it is the most inboard that anode foils 11 is positioned at the core bag, and described 4 layers of structure are reeled and formed described cylinder formed core bag 10 by winding process.
Wherein, aluminium electrolytic capacitor 100 described in the utility model is when wound capacitor, the tip edge 121,131 of described Cathode Foil 12 and electrolytic paper 13 not flushes setting, but Cathode Foil 12 is arranged to exceed described electrolytic paper 13, and the best distance exceeded is 2-3mm, please coordinate and consult shown in Fig. 2, so just increase the area of dissipation of Cathode Foil 12, improve heat resistance, water conservancy diversion degree and the high pressure resistant degree of electric capacity.
Shown in please refer to the drawing 3, described electrolytic paper 13 infiltrates by described electrolyte, described anode foils 11 is formed with anode oxide film 111 on the side of electrolytic paper 13, and described Cathode Foil 12 is formed with Natural Oxide Film 121 on the side of electrolytic paper 13, described infiltration has the electrolytic paper 13 of electrolyte to be located between described anode oxide film 111 and described Natural Oxide Film 121, and described electrolyte 70 invests anode oxide film 111 surfaces for actual negative electrode, and there is the effect of repairing oxide-film.
In addition, electrolyte described in the utility model adopts the electrolyte that contains carboxyl compound, and it contains the carboxyl compound of general molecular formula I, and general molecular formula I is:
Wherein, R1, R2 is alkyl.
It is the carboxylic acid that alkyl forms that carboxyl and sub stituent are arranged on carbon two terminal positions as the electrolyte main chain; alkyl is to form steric hindrance close to carboxyl; carboxyl has reacted inhibition with the alcohols such as ethylene glycol of solvent; suppressed above-mentioned esterification and acylation reaction, can prevent that the conductivity of Working electrolyte through diminishing for a long time under hot environment.The ESR that has consequently suppressed electrolytic capacitor increases, and has improved heat-resisting, high-temperature stability and the useful life of electrolytic capacitor.
In order to improve the conductance of electrolyte, the utility model increases alundum (Al2O3) (Al in described electrolyte
2o
3) additive, improve conductance.Add nanoscale Al in electrolyte
2o
3, due to nanoscale Al
2o
3granularity is 1/10 of common additives granularity, therefore larger effective adsorption area has just been arranged, and can adsorb more electric charge, promotes the charge movement ability, increases ionic mobility, improves conductivity.With conventional additives relatively, use the nanoscale alundum (Al2O3) can reduce ESR, improve flash over voltage, thereby improved heat-resisting, high-temperature stability and the useful life of capacitor.
In sum, aluminium electrolytic capacitor described in the utility model has increased the area of dissipation of capacitor internal, improves ionic mobility, effectively suppresses esterification and acylation reaction, with traditional product, compares, and can extend 5-10% its useful life; Withstand voltage degree improves 20V, heat resistance improves 5-7 ℃, the electric current of anti-high frequency ripple raising 15-17%.
Embodiment: take and produce a lead wire type aluminum electrolytic capacitor as example, its process is: 1. cutting: electrolytic paper, cathode and anode paper tinsel, guide pin are cut into to biscuit in accordance with regulations for reeling.
2. reel: anode foils, Cathode Foil are riveted with two guide pins respectively, then with electrolytic paper, be rolled into core, when reeling, Cathode Foil, than the high 2-3mm of electrolytic paper, forms the core bag.
3. flood: the electrolyte that dried core bag is flooded to the carboxyl compound that contains general molecular formula I.
4. automatically assembling sealing: by guide pin and cover plate riveted joint, and then guide pin is converted into to the suitable shape of guarantor fills in aluminum hull, and by the moulding of product sealed.
5. hand assembled sealing: Rubber end on the core jacket soaked is packed in aluminum hull and carried out sealed slot rolling moulding.
6. mould cover: PVC heat-shrinkable T bush and the insulation spacer of Product Identifying will be printed on capacitor, make it insulation, attractive in appearance.
7. ageing: oxide-film is repaired, improved to capacitor, improve the capacitor quality, the removing waste substandard products.
8. test: measure capacitor electrode performance three parameters and reject defective products, the capacitor electrode performance is met the requirements.
9. pack: reject the outward appearance substandard product, install in the parcel mounted box by product and paste the quality certificate.
10. moulding: the lead-out wire of capacitor is processed into to needed shape and size in accordance with regulations.
The above; it is only most preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction; any those of ordinary skill in the art; do not breaking away from technical solutions of the utility model scope situation; utilize the method content of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, all belong to the scope of claims protection.
Claims (3)
1. a novel nano aluminium electrolytic capacitor, two cylindrical shape aluminum hulls that go between and be sheathed on core bag periphery that comprise columnar core bag, two guide pins of drawing from core Bao Yiduan, connect guide pin and draw from guide pin, described core bag comprises: anode foils, Cathode Foil and be located in the electrolytic paper between described Cathode Foil and anode foils, it is characterized in that: the top of described Cathode Foil exceeds described electrolytic paper, has electrolyte on described electrolytic paper.
2. novel nano aluminium electrolytic capacitor according to claim 1, it is characterized in that: it is 2-3mm that described Cathode Foil top exceeds described electrolytic paper
.
3. novel nano aluminium electrolytic capacitor according to claim 2, it is characterized in that: described anode foils, electrolytic paper, Cathode Foil, electrolytic paper set gradually respectively the formation four-layer structure from inside to outside, described four-layer structure is reeled and is formed described cylinder formed core bag by winding process, and it is the most inboard that described anode foils is positioned at the core bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723356 CN203070933U (en) | 2012-12-25 | 2012-12-25 | Novel nanometer aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220723356 CN203070933U (en) | 2012-12-25 | 2012-12-25 | Novel nanometer aluminum electrolytic capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN203070933U true CN203070933U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220723356 Expired - Fee Related CN203070933U (en) | 2012-12-25 | 2012-12-25 | Novel nanometer aluminum electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203070933U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983007A (en) * | 2012-12-25 | 2013-03-20 | 上海赛特康新能源科技有限公司 | Novel nano aluminum electrolytic capacitor |
| CN103680984A (en) * | 2013-12-25 | 2014-03-26 | 佛山市高明区利明电子有限公司 | 350V electrolytic capacitor and production process thereof |
| CN103700507A (en) * | 2013-12-25 | 2014-04-02 | 佛山市高明区利明电子有限公司 | 100V electrolytic capacitor and producing process thereof |
-
2012
- 2012-12-25 CN CN 201220723356 patent/CN203070933U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983007A (en) * | 2012-12-25 | 2013-03-20 | 上海赛特康新能源科技有限公司 | Novel nano aluminum electrolytic capacitor |
| CN103680984A (en) * | 2013-12-25 | 2014-03-26 | 佛山市高明区利明电子有限公司 | 350V electrolytic capacitor and production process thereof |
| CN103700507A (en) * | 2013-12-25 | 2014-04-02 | 佛山市高明区利明电子有限公司 | 100V electrolytic capacitor and producing process thereof |
| CN103700507B (en) * | 2013-12-25 | 2016-07-06 | 佛山市高明区利明电子有限公司 | A kind of 100V electrolysis condenser and production technology thereof |
| CN103680984B (en) * | 2013-12-25 | 2017-01-04 | 佛山市高明区利明电子有限公司 | A kind of 350V electrolysis condenser and production technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20181225 |