CN203242502U - Solid electrolyte aluminum electrolytic capacitor - Google Patents
Solid electrolyte aluminum electrolytic capacitor Download PDFInfo
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- CN203242502U CN203242502U CN 201320245302 CN201320245302U CN203242502U CN 203242502 U CN203242502 U CN 203242502U CN 201320245302 CN201320245302 CN 201320245302 CN 201320245302 U CN201320245302 U CN 201320245302U CN 203242502 U CN203242502 U CN 203242502U
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Abstract
The utility model relates to a solid electrolyte aluminum electrolytic capacitor. The capacitor comprises an aluminum housing, a core package disposed inside the aluminum housing, a rubber cover that is disposed on the top of the core package and in seal connection with the aluminum housing, a positive terminal, and a negative terminal. The core package comprises an anode formation aluminum foil, a cathode foil, an electrolysis paper that is disposed between the anode formation aluminum foil and the cathode foil, and a polymer electrolyte. The positive terminal is disposed at one end of the core package and riveted on the anode formation aluminum foil, and particularly, the negative terminal is connected with the bottom of the aluminum housing. A negative conducting strip disposed at an end, opposite to the end where the positive terminal is located, of the core package is welded with the cathode foil and the aluminum housing. The capacitor can be installed in a horizontal manner to reduce installation height and shorten product length, so that a small-scaled product can be obtained, series equivalence can be decreased, and anti-ripple capacity of the product can be improved.
Description
Technical field
The utility model relates to a kind of solid electrolyte/aluminum electrolytic capacitor.
Background technology
The liquid electrolytic capacitor that solid electrolytic capacitor is compared common, its electrical property is very outstanding, has that low, the anti-ripple current of equivalent series resistance (ESR) is high, a long service life, steady performance.Continuous upgrading along with electronic product, improving constantly of its function and performance, high frequency characteristics to capacitor requires also more and more higher, people make different mounting meanss and realize different installation requirements, simultaneously also by also reducing by all means the equivalent series resistance of solid electrolytic capacitor, to satisfy the high frequency characteristics of capacitor.
In the prior art, the tactic pattern that the solid electrolytic capacitor industry is general mainly contains two kinds, the first: positive and negative paper tinsel and positive and negative guide pin link, and at same end, put on behind the Jiao Gai and make electric capacity after the encapsulation; Another kind of way is: positive and negative paper tinsel and positive and negative guide pin are linked, and two guide pins place respectively core bag two ends, and Jiao Gai is loaded onto respectively at two ends, are loaded on to make electric capacity after aluminum hull seals.Front a kind of version is a kind of form that industry generally adopts, and can satisfy the application of most of occasion, but for the lower occasion of requirement for height, is difficult to meet the demands.Rear a kind of version, terminal is drawn from two ends, and the mounting means of electric capacity is to crouch on installed surface, and is highly lower, well adapted to the low mounting means of requirement for height.But there are two defectives in this structure, the one, and two ends seal with Jiao Gai, for reaching certain sealing effectiveness, the thickness of Jiao Gai has certain requirement, and two ends have increased the length of electric capacity with two Jiao Gai, reduced the capacity of unit volume, another defective is that series equivalent resistance is higher.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provide a kind of improved solid electrolyte/aluminum electrolytic capacitor with when realizing that thereby horizontal installation reduces setting height(from bottom), reduce the series equivalent resistance and the length that reduces capacitor of capacitor.
For solving above technical problem, the utility model is taked following technical scheme:
A kind of solid electrolyte/aluminum electrolytic capacitor, it comprises aluminum hull, be arranged at the core bag in the aluminum hull, the Jiao Gai that is arranged on core bag top and is tightly connected with described aluminum hull, positive terminal, negative terminal, described core bag comprises and is anodizing to aluminium foil, Cathode Foil, be arranged on the electrolytic paper and the polymer dielectric that are anodizing between aluminium foil and the Cathode Foil, positive terminal is positioned at an end of core bag and is riveted on described being anodizing on the aluminium foil, particularly, described negative terminal is connected with the bottom of aluminum hull, the end relative with positive terminal place end at the core bag is provided with cathode conductive film, and this cathode conductive film welds mutually with Cathode Foil and aluminum hull.
Preferably, Cathode Foil exceeds and is anodizing to paper tinsel and electrolytic paper and exposes the part that the exposes welding of cathode conductive film and Cathode Foil in the core bag.
Further preferably, the width of electrolytic paper is greater than the width that is anodizing to paper tinsel.Preferably, described core bag also comprises the electrolytic paper that is arranged on the Cathode Foil outside.Preferably, be welded as Laser Welding between described cathode conductive film and the Cathode Foil, be welded as ultrasonic bond or Laser Welding between cathode conductive film and the aluminum hull.
Preferably, described Jiao Gai selects exotic material, for example can be vulcanized butyl rubber or polyethylene terephthalate (PET).Preferably, to be covered with thickness on the outer wall of described aluminum hull be the insulating barrier of 5 μ m～50 μ m or be coated with polyethylene terephthalate (PET) or the sebific duct of polyethylene (PE) material.The material of described insulating barrier can be for example terylene, epoxy resin or polyethylene (PE) resin.Preferably, be anodizing between aluminium foil and the Cathode Foil and be full of described polymer dielectric in the electrolytic paper.In other words, polymer dielectric be present in be anodizing between aluminium foil and the Cathode Foil and be present on the electrolytic paper and in.
Solid electrolyte/aluminum electrolytic capacitor of the present utility model can be manufactured by the following method manufacturing:
(1) positive terminal is connected on the end that is anodizing to aluminium foil, then get involved electrolytic paper being anodizing between aluminium foil and the Cathode Foil, be wound into the core bag, wherein, the width of described Cathode Foil is greater than the described paper tinsel that is anodizing to, so that the Cathode Foil described in the gained core bag exceeds and is anodizing to paper tinsel and electrolytic paper and exposes, the core bag of coiling is fixing around clinging with adhesive tape ring;
(2), will change into repair process in step (1) the gained core bag immersion forming liquid, the described repair process mode that changes into is for directly being sandwiched in the folder, or is welded in the iron bar, and anchor clamps or iron bar are as positive pole, forming liquid is as negative pole, and the formation voltage of anode foils gets final product in addition;
(3), the mode by impregnation makes through forming polymer dielectric in the core bag of step (2);
(4), the polymer dielectric on the surface of the Cathode Foil that will expose removes, and cathode conductive film is welded on the part that exposes of Cathode Foil with laser;
(5), wrapping and install Jiao Gai through the core of step (4), in the aluminum hull of packing into, with ultrasonic bond or laser cathode conductive film and aluminum hull are welded;
(6), with aluminum hull and the Jiao Gai form sealing by the rolling sealing, namely get described solid electrolyte/aluminum electrolytic capacitor.
Further, described manufacture method also is included in step (6) afterwards, the gained solid electrolyte/aluminum electrolytic capacitor is carried out successively the step of high temperature ageing and testing, sorting, wherein, the high temperature ageing condition is as follows: ambient temperature is controlled between 85 ℃～200 ℃, apply voltage and be respectively 20%, 80%, 100% and 120% operating voltage, ageing time is 10～240 minutes.According to manufacture method of the present utility model, the forming liquid that adopts of related repair process wherein, the concrete mode of related formation polymer dielectric all can be implemented with reference to prior art in the step (3), is not particularly limited.Step (2) afterwards step (3) can carry out carbonization treatment if necessary before.In the step (3), its operate to realize described be anodizing between aluminium foil and the Cathode Foil and be full of polymer dielectric in the electrolytic paper be advisable.Preferably, described method also is included in and covers thickness on the outer wall of aluminum hull and is the insulating barrier of 5 μ m～50 μ m or is coated with polyethylene terephthalate (PET) or the sebific duct of polyethylene (PE) material.The material of described insulating barrier can be for example terylene, epoxy resin or polyethylene (PE) resin.
Because the employing of technique scheme, the utility model compared with prior art has the following advantages:
1, the mode of the positive and negative electrode of electric capacity is drawn at the two ends of the utility model capacitor employing, has reduced setting height(from bottom), has adapted to specific (special) requirements and has installed requirement highly, has realized the horizontal installation when electric capacity uses;
2, the utility model is cathode conductive film and Cathode Foil and aluminum hull welding, and connects negative pole at aluminum hull, takes the benefit of this structure to be: on the one hand, owing to only having used a Jiao Gai, to shorten the length of product, realized the miniaturization of product; On the other hand, Cathode Foil and cathode conductive film welding have reduced the resistance between Cathode Foil and the negative terminal, greatly reduce the series equivalent resistance of product, have improved the ability of the anti-ripple of product.
Description of drawings
Fig. 1 is the structural representation according to solid electrolytic aluminum capacitor of the present utility model;
Fig. 2 is the structural representation according to the core bag of solid electrolytic aluminum capacitor of the present utility model;
Wherein: 1, positive terminal; 2, negative terminal; 3, Jiao Gai; 4, aluminum hull; 5, cathode conductive film; 6, insulating barrier.7, core bag; 71, be anodizing to aluminium foil; 72, Cathode Foil; 73, electrode paper; 74, polymer dielectric.
Embodiment
The utility model is intended to improve by the structure to capacitor, to realize the horizontal installation of capacitor product, reduce setting height(from bottom), shorten product length, realize the miniaturization of product and the series connection equivalence (ESR) that reduces product, improve the anti-ripple ability of product.Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in restriction the utility model.
Consult Fig. 1 to Fig. 2, the present embodiment provides a kind of copolymer solid electrolyte aluminium electrolytic capacitor, and specification is 25V820 μ F, and production quantity is 300, and it comprises positive terminal 1, negative terminal 2, glue lid 3, aluminum hull 4, cathode conductive film 5 and core bag 7.Core bag 7 consists of by being anodizing to aluminium foil 71, Cathode Foil 72, electrolytic paper 73 and polymer dielectric 74.Core bag 7 upper ends connect positive terminal 1, and the bottom of core bag 7 connects cathode conductive film 5.Glue lid 3 and aluminum hull 4 are separately positioned on the top of core bag 7 and all around, and aluminum hull 4 is connected with cathode conductive film 5, aluminum hull 4 bottoms connection negative terminal 2, and aluminum hull 4 is coated with insulating barriers 6 outward.
The manufacture method of copolymer solid electrolyte aluminium electrolytic capacitor comprises the following step that carries out successively:
(1), choose formation voltage be the Waste Acid From Hua Cheng Foil of 51V as being anodizing to aluminium foil, cutting width is 17mm; The width that cuts of electrolytic paper is 19mm; Choose suitable Cathode Foil, cutting width is 19mm.
(2), by nail volume machine the positive terminal riveting is being anodizing on aluminium foil and the Cathode Foil, with electrolytic paper, be wound into core bag with following closely the volume machine in the two therebetween.Between the electrolytic paper that is anodizing between aluminium foil and the Cathode Foil two paper tinsels are kept apart, do not form short circuit, Cathode Foil is stretched out the outer 1mm of electrolytic paper, and Cathode Foil encases the core bag after reeling, and the outside is fastened with adhesive tape.
(3), the core bag of winding is delivered in the battery formation clamp by changing into machine, put into the forming liquid dipping 10 minutes, formation voltage is 50V, and forming liquid is the ammonium adipate forming liquid, changes into 25 minutes, and the oxidation film layer on antianode formed aluminum foil surface is repaired.
(4), the core bag is put in the container that stainless steel makes, be put in temperature and be in 270 ℃ the high temperature oven and carry out carbonization treatment.
(5), polymerization single polymerization monomer and oxidant are impregnated in respectively in the core bag, carry out polymerization reaction, thereby generate copolymer solid electrolyte being anodizing between aluminium foil and the Cathode Foil and in the electrolytic paper.
(6), the polymer on the Cathode Foil surface that will expose is removed, and with laser cathode conductive film and Cathode Foil is welded;
(7), core is packed gluing lid, outer being provided with in the aluminum hull of insulating barrier (PE resin) of packing into welded cathode conductive film and aluminum hull with ultrasonic bond.
(8), with aluminum hull and the Jiao Gai form sealing by the rolling sealing, namely get the copolymer solid electrolyte aluminium electrolytic capacitor product.
Product is put into the baking oven that temperature is controlled at 125 ℃, apply respectively 5V, the voltage of 20V, 25V and 30V, the time is made as respectively 30 minutes, 30 minutes, 30 minutes and 60 minutes, wears out, and tests after the answer 2 of having worn out is little.
After the number that manufactures a finished product is 300 sortings, large 2 of loss wherein, leakage current is large 3, totally 5 bad devices, the test yields is 98.33%.
Table 1 has shown that this routine 25V820 μ F product (optional 10) in the capacitance under the 120Hz frequency, loss, the measured value of ESR under the 100KHz frequency, applies the leakage current of 25V voltage measurement.
Table 1
| Sequence number | Capacity (uf) | Loss (100%) | ESR(mΩ) | Leakage current (uA/1 minute) |
| Specification | 656～984 | 6% | 8 | 2050 |
| 1 | 826.0 | 2.23 | 6.6 | 21 |
| 2 | 820.3 | 2.54 | 6.5 | 22 |
| 3 | 827.0 | 2.34 | 6.4 | 32 |
| 4 | 820.5 | 2.34 | 6.5 | 42 |
| 5 | 820.6 | 2.43 | 6.5 | 22 |
| 6 | 827.3 | 2.54 | 6.7 | 25 |
| 7 | 825.4 | 2.32 | 6.7 | 35 |
| 8 | 825.0 | 2.31 | 6.5 | 23 |
| 9 | 820.1 | 2.45 | 6.5 | 36 |
| 10 | 826.4 | 2.52 | 6.4 | 44 |
| Maximum | 827.3 | 2.54 | 6.7 | 44.0 |
| Minimum value | 820.1 | 2.23 | 6.4 | 21.0 |
| Mean value | 823.9 | 2.40 | 6.5 | 30.2 |
It is the copolymer solid electrolyte aluminium electrolytic capacitor of 50V220 μ F that the present embodiment provides a kind of specification, and specification is 50V220 μ F, and its basic structure is with embodiment 1.Different is that the manufacture method of this capacitor is as follows:
(1), choose formation voltage be the Waste Acid From Hua Cheng Foil of 105V as being anodizing to aluminium foil, cutting width is 12mm; The width that cuts of electrolytic paper is 14mm; Choose suitable Cathode Foil, cutting width is 14mm.
(2), by nail volume machine positive terminal 1 riveting is being anodizing on aluminium foil and the Cathode Foil, with electrolytic paper, be wound into core bag with following closely the volume machine in the two therebetween.Electrolytic paper is kept apart two paper tinsels between being anodizing between aluminium foil and the Cathode Foil, does not form short circuit, and Cathode Foil is stretched out the outer 1mm of electrolytic paper, and Cathode Foil encases the core bag after reeling, and the outside is fastened with adhesive tape.
(3), the core bag of winding is delivered in the battery formation clamp by changing into machine, put into the forming liquid dipping 10 minutes, formation voltage is 100V, and forming liquid is the ammonium adipate forming liquid, changes into 25 minutes, and the oxidation film layer on antianode formed aluminum foil surface is repaired.
(4), the core bag is put in the container that stainless steel makes, be put in temperature and be and carry out drying in 125 ℃ the baking oven and process.
(5), polymerization single polymerization monomer mixed with oxidant be scattered in the water, be impregnated in the core bag, and dry the processing, thereby generate copolymer solid electrolyte being anodizing between aluminium foil and the Cathode Foil and in the electrolytic paper.
(6), the polymer on the Cathode Foil surface that will expose is removed, and with laser cathode conductive film and Cathode Foil is welded;
(7), core is packed gluing lid, packing into is coated with in the aluminum hull of PET sebific duct, with ultrasonic bond cathode conductive film and aluminum hull is welded.
(8), with aluminum hull and the Jiao Gai form sealing by the rolling sealing, namely get the copolymer solid electrolyte aluminium electrolytic capacitor product.
Product is put into the baking oven that temperature is controlled at 125 ℃, apply respectively 10V, the voltage of 40V, 50V and 60V, the time is made as respectively 30 minutes, 30 minutes, 30 minutes and 60 minutes, wears out, and tests after the answer 2 of having worn out is little.
Wherein manufacture a finished product number for after the 300PCS sorting, large 4 of loss wherein, leakage current is large 3, totally 7 bad, yields is 97.66%.
Table 2 is this routine 50V220 μ F product (optional 10) in the capacitance under the 120Hz frequency, loss, the measured value of ESR under the 100KHz frequency, applies the leakage current of 50V voltage measurement.
Table 2
| Sequence number | Capacity (uf) | Loss (100%) | ESR(mΩ) | Leakage current (uA/1 minute) |
| Specification | 176～264 | 6% | 8 | 1100 |
| 1 | 226.3 | 2.78 | 7.9 | 31 |
| 2 | 220.3 | 2.67 | 7.8 | 33 |
| 3 | 227.1 | 2.77 | 7.7 | 31 |
| 4 | 220.3 | 2.68 | 7.9 | 43 |
| 5 | 220.6 | 2.56 | 8.0 | 32 |
| 6 | 227.2 | 2.68 | 7.7 | 35 |
| 7 | 225.1 | 2.53 | 7.8 | 25 |
| 8 | 225.4 | 2.65 | 7.9 | 23 |
| 9 | 220.3 | 2.68 | 7.9 | 38 |
| 10 | 226.4 | 2.65 | 7.7 | 46 |
| Maximum | 227.2 | 2.78 | 8.0 | 46.0 |
| Minimum value | 220.3 | 2.53 | 7.7 | 23.0 |
| Mean value | 223.9 | 2.67 | 7.8 | 33.7 |
It should be noted that at last: above only is preferred embodiment of the present utility model; be not limited to the utility model; although with reference to embodiment the utility model is had been described in detail; for a person skilled in the art; it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing; perhaps part technical characterictic wherein is equal to replacement; in every case within spirit of the present utility model and principle; any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (8)
1. solid electrolyte/aluminum electrolytic capacitor, it comprises aluminum hull, be arranged at the core bag in the described aluminum hull, the Jiao Gai that is arranged on described core bag top and is tightly connected with described aluminum hull, positive terminal, negative terminal, described core bag comprises and is anodizing to aluminium foil, Cathode Foil, be arranged on described electrolytic paper and the polymer dielectric that is anodizing between aluminium foil and the described Cathode Foil, described positive terminal is positioned at an end of described core bag and is riveted on described being anodizing on the aluminium foil, it is characterized in that: described negative terminal is connected with the bottom of described aluminum hull, the end relative with described positive terminal place end at described core bag is provided with cathode conductive film, and this described cathode conductive film welds mutually with described Cathode Foil and aluminum hull.
2. solid electrolyte/aluminum electrolytic capacitor according to claim 1, it is characterized in that: the Cathode Foil described in the described core bag exceeds and is anodizing to paper tinsel and electrolytic paper and exposes the described part welding that exposes of described cathode conductive film and described Cathode Foil.
3. solid electrolyte/aluminum electrolytic capacitor according to claim 2, it is characterized in that: the width of described electrolytic paper is greater than the described width that is anodizing to paper tinsel.
4. solid electrolyte/aluminum electrolytic capacitor according to claim 1 is characterized in that: be welded as Laser Welding between described cathode conductive film and the described Cathode Foil, be welded as ultrasonic bond or Laser Welding between described cathode conductive film and the described aluminum hull.
5. solid electrolyte/aluminum electrolytic capacitor according to claim 1, it is characterized in that: the material of described Jiao Gai is vulcanized butyl rubber or polyethylene terephthalate.
6. solid electrolyte/aluminum electrolytic capacitor according to claim 1 is characterized in that: to be covered with thickness on the outer wall of described aluminum hull be the insulating barrier of 5 μ m ~ 50 μ m or be coated with the polyethylene terephthalate material or the sebific duct of polyethylene material.
7. solid electrolyte/aluminum electrolytic capacitor according to claim 6, it is characterized in that: the material of described insulating barrier is terylene, epoxy resin or polyvinyl resin.
8. solid electrolyte/aluminum electrolytic capacitor according to claim 1 is characterized in that: describedly be anodizing between aluminium foil and the Cathode Foil and be full of described polymer dielectric in the described electrolytic paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320245302 CN203242502U (en) | 2013-05-08 | 2013-05-08 | Solid electrolyte aluminum electrolytic capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320245302 CN203242502U (en) | 2013-05-08 | 2013-05-08 | Solid electrolyte aluminum electrolytic capacitor |
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| CN203242502U true CN203242502U (en) | 2013-10-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268821A (en) * | 2013-05-08 | 2013-08-28 | 佛山市三水日明电子有限公司 | Solid electrolyte aluminum electrolytic capacitor and manufacturing method thereof |
| CN103630788A (en) * | 2013-12-17 | 2014-03-12 | 深圳顺络电子股份有限公司 | Detecting method of solid electrolytic capacitor |
| CN103854860A (en) * | 2014-03-12 | 2014-06-11 | 中国振华（集团）新云电子元器件有限责任公司 | Burn-in method of high-temperature-resistant tantalum capacitor |
-
2013
- 2013-05-08 CN CN 201320245302 patent/CN203242502U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103268821A (en) * | 2013-05-08 | 2013-08-28 | 佛山市三水日明电子有限公司 | Solid electrolyte aluminum electrolytic capacitor and manufacturing method thereof |
| CN103268821B (en) * | 2013-05-08 | 2016-06-22 | 佛山市三水日明电子有限公司 | A kind of manufacture method of solid electrolyte/aluminum electrolytic capacitor |
| CN103630788A (en) * | 2013-12-17 | 2014-03-12 | 深圳顺络电子股份有限公司 | Detecting method of solid electrolytic capacitor |
| CN103630788B (en) * | 2013-12-17 | 2016-03-09 | 深圳顺络电子股份有限公司 | A kind of detection method of solid electrolytic capacitor |
| CN103854860A (en) * | 2014-03-12 | 2014-06-11 | 中国振华（集团）新云电子元器件有限责任公司 | Burn-in method of high-temperature-resistant tantalum capacitor |
| CN103854860B (en) * | 2014-03-12 | 2016-08-24 | 中国振华（集团）新云电子元器件有限责任公司 | A kind of ageing method of high temperature resistant tantalum capacitor |
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| C14 | Grant of patent or utility model | ||
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Denomination of utility model: Solid electrolyte aluminum electrolytic capacitor and manufacturing method thereof Effective date of registration: 20170412 Granted publication date: 20131016 Pledgee: Guangdong Nanhai Rural Commercial Bank branch branch of Limited by Share Ltd. Pledgor: FOSHAN SANSHUI RIMING ELECTRONCS Co.,Ltd. Registration number: 2017990000303 |
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Granted publication date: 20131016 |