CN102683047A - Preparation method of solid electrolyte aluminum electrolytic capacitor - Google Patents
Preparation method of solid electrolyte aluminum electrolytic capacitor Download PDFInfo
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- CN102683047A CN102683047A CN2012101480308A CN201210148030A CN102683047A CN 102683047 A CN102683047 A CN 102683047A CN 2012101480308 A CN2012101480308 A CN 2012101480308A CN 201210148030 A CN201210148030 A CN 201210148030A CN 102683047 A CN102683047 A CN 102683047A
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Abstract
The invention discloses a preparation method of a solid electrolyte aluminum electrolytic capacitor, wherein the method comprises the following steps: 1) intervening electrolytic paper between an anode formed aluminum foil and a cathode aluminum foil, winding the electrolytic paper into core packets, constricting by use of high-temperature adhesive tapes, and installing adhesive covers on the core packets; 2) welding anode guide pins of the core packets provided with adhesive covers on an iron strip; 3) immersing the core packets into a formation liquid for formation reparation treatment; 4) carrying out carbonization treatment on the core packets after formation reparation treatment; 5) repeating the steps 3 and 4 for 2-10 times; 6) immersing the core packets into the formation liquid for formation reparation treatment; and 7) carrying out monomer and oxidation impregnation on the core packets, heating and polymerizing, filing into aluminum shells, sealing, and aging and treating, thereby preparing finished products. The polymer solid capacitor produced by adopting the process has the characteristics of capacity, loss, leakage current, serial connection equivalent resistance, and very good production service life consistency, thus the product percent of pass is very high.
Description
Technical field
The present invention relates to the manufacturing approach of solid electrolytic capacitor, specifically, relate to the manufacturing approach of solid electrolyte aluminium electrolytic capacitor.
Background technology
The liquid electrolytic capacitor that solid electrolytic capacitor is compared common, its electrical property is very outstanding, has low ESR (ESR), high anti-ripple current, long service life, steady performance.Along with the continuous upgrading of electronic product, improving constantly of its function and performance, also increasingly high to the high frequency characteristics requirement of capacitor, people are through the ESR of various different approaches reduction solid electrolytic capacitors, to satisfy the high frequency characteristics of capacitor.
And also the ubiquity homogeneity of product is relatively poor for the product that existing industry is produced, the problem that qualification rate is lower.
Summary of the invention
The present invention has overcome shortcoming of the prior art, and the manufacturing approach of solid electrolyte aluminium electrolytic capacitor is provided, and it can obtain product consistency preferably, and is prone to obtain the high product qualification rate.
In order to solve the problems of the technologies described above, the present invention realizes through following technical scheme:
The manufacturing approach of solid electrolyte aluminium electrolytic capacitor may further comprise the steps,
1) gets involved electrolytic paper and be wound into the core bag being anodizing between aluminium foil and the Cathode Foil, tighten with high temperature gummed tape, and core is packed the gluing lid;
The core bag anode guide pin that 2) Jiao Gai will be housed is welded on the iron bar;
3) the core bag immerses to change into and changes into repair process in the liquid;
The core bag that 4) will change into after the repair process carries out carbonization treatment;
5) 3 and 4 step repeats 2-10 for several times, is preferably 4-8 time, most preferably be 6 times,
6) the core bag immerses to change into and changes into repair process in the liquid;
7) the core bag carries out monomer respectively, the oxidant impregnation, and heated polymerizable, the aluminum hull of packing into seals, and burin-in process is processed product.
Further; The core bag of said step 3 immerses to change into and changes into repair process in the liquid and comprise: the positive pole of power supply is inserted pallet, and pallet links to each other with iron bar, and the positive pole of core bag links to each other with iron bar; Power cathode links to each other with core bag negative pole, and core wraps in to change in the liquid and repairs after powering up.
Further, said high temperature gummed tape is polyimide adhesive tape or polyphenylene sulfide adhesive tape,, prevents to get loose at course of processing SMIS bag around clinging the core bag with high temperature gummed tape, and viscose glue is siliceous high temperature resistant adhesive tape, and said Jiao Gai is butyl rubber Jiao Gai.
Further, the welding manner of said step 2 is spot welding, and anode is welded on the iron bar, and the welding range error is ± 0.5mm to be preferably ± 0.2mm.
Further, the said liquid that changes into is that ammonium adipate system changes into liquid, boric acid system changes into liquid or phosphoric acid system changes into liquid, most preferably is boric acid system and changes into liquid.
Further, the said immersion depth that changes into repair process SMIS bag is 2/3 place that glue lid lower edge arrives.
Preferably, the said immersion depth that changes into repair process SMIS bag 1/2 place that is Jiao Gai.
Further, the said voltage that changes into reparation is that staged increases, and is respectively 1/2 formation voltage, 2/3 formation voltage and formation voltage, and the time that applies is respectively 1/3 of total time.
Further, the said voltage that changes into reparation is that staged increases, and is respectively 1/2 formation voltage, is 1/5T between applying into; 2/3 formation voltage, application time are 1/5T; Formation voltage, application time are 3/5T, and wherein, T is total time, adopt above staged voltage, and repairing effect is better.
Further, said monomer is the thiophene-based material, and said oxidant is p-methyl benzenesulfonic acid and salt thereof, and most preferred monomer is the basic dioxygen thiophene of 3,4 two supports, and oxidant is a p-methyl benzenesulfonic acid iron.
Compared with prior art, the invention has the beneficial effects as follows:
Through explained hereafter solid capacitor of the present invention, the core winding is got the back negative electrode outwardly, has reduced the consumption of electrolytic paper; Fluff thereby reduced after the carbonization material back core bag that sheds, the core bag external beam after roll up simultaneously is in high temperature gummed tape, high temperature gummed tape employing polyphenylene sulfide or polyimide adhesive tape; This adhesive tape temperature tolerance is fine; The bloated coefficient of Peng of temperature is also little, has guaranteed to get loose and loose excessively phenomenon after the core bag is handled, thereby has guaranteed consistency of product.In addition the core bag is welded on the iron bar; Can precisely control the height and their consistency of liquid level when changing into; Thereby guarantee the consistency of repairing effect, the liquid level when also guaranteeing monomer and oxidant impregnation simultaneously can be controlled accurately, improves core and comprises the consistency of soaking; And have the consistent extraordinary characteristic of capacity, loss, leakage current, series equivalent resistance and life of product with the polymer solid capacitor of this explained hereafter, so product percent of pass is also very high.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, is used to explain the present invention with embodiments of the invention, be not construed as limiting the invention, in the accompanying drawings:
Fig. 1 is that core bag of the present invention is welded in the sketch map on the iron bar.
Wherein, 1---the core bag;
2---iron bar.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Embodiment 1:
A kind of polymer solid aluminum electrolytic capacitor, specification are 6.3V680 μ F, and production quantity is 5000, and the step of its making is following:
1, through core bag up-coiler the VF value for being anodizing to aluminium foil, negative electrode formed aluminum foil, electrolytic paper, 12V is wound into core bag 1; Electrolytic paper is between being anodizing between aluminium foil and the negative electrode formed aluminum foil; The back Cathode Foil of reeling encases core bag 1; The negative electrode formed aluminum foil is wrapped in the outside of capacitor, with electrolytic paper be anodizing to aluminium foil and be wrapped in wherein;
2, Jiao Gai is installed on the core bag 1, and the mode of core bag 1 like Fig. 1 is welded on the iron bar 2, guarantee the consistency of welding and assembling height, the iron bar that welds 2 is put on the pallet, the material of pallet can be a stainless steel for the material of conduction, irony, or copper etc.;
3, the core bag 1 of winding is put into changed into liquid, the degree of depth of immersion is with 1/2 place of Jiao Gai.
4, applying formation voltage is 3.2V, and application time is 2 minutes, applies voltage 4.2V again; Application time is 2 minutes, applies voltage 6.3V again, and application time is 6 minutes; Changing into liquid is that ammonium adipate changes into liquid, and it is that oxidation film layer to aluminium foil surface is repaired that core bag 1 changes into;
5, core bag 1 being placed temperature is that 280 ℃ high temperature oven carries out carbonization treatment, and the time of carbonization treatment is 10 minutes, and carbonization treatment is that the electrolytic paper in the core bag 1 is carried out carbonization treatment;
6, repeat the step and gather 3 and step 4, repeat 6 times core bag 1 changed into and carbonization treatment;
7, core bag 1 is put into oxidant respectively and monomer carries out impregnation, carry out polymerization reaction after the impregnation, in capacitor core bag 1, generate conducting polymer;
8, core bag 1 after the polymerization reaction is packed in the aluminum hull, seal behind the crimping, isolated with external environment, prevent product moisture absorption or contaminated back performance depreciation;
9, packaged product is carried out burin-in process with 6.3V, worn out and replied 2 little back back tests.
Table 1 is a 6.3V680 μ F polymer solid aluminum electrolytic capacitor in the capacitance under the 120Hz frequency, loss, measured value and the leakage current measuring value of ESR under the 100KHz frequency.
| Sequence number | Capacity (uf) | Loss (100%) | ESR(mΩ) | Leakage current (uA/1 minute) |
| Specification | -15%--18% | 6.0 | 8.0 | 856.8 |
| 1 | 736.0 | 1.45 | 4.5 | 20 |
| 2 | 750.3 | 1.27 | 4.6 | 23 |
| 3 | 737.0 | 1.31 | 4.3 | 30 |
| 4 | 740.5 | 1.30 | 4.4 | 45 |
| 5 | 740.6 | 1.23 | 4.3 | 34 |
| 6 | 737.3 | 1.43 | 4.5 | 35 |
| 7 | 725.6 | 1.37 | 4.5 | 27 |
| 8 | 735.0 | 1.25 | 4.6 | 28 |
| 9 | 740.1 | 1.28 | 4.7 | 32 |
| 10 | 736.5 | 1.26 | 4.6 | 35 |
| Maximum | 750.3 | 1.45 | 4.7 | 45 |
| Minimum value | 725.6 | 1.23 | 4.3 | 20 |
| Mean value | 737.89 | 1.315 | 4.5 | 30.9 |
The measured value of table 16.3V680 μ F polymer solid aluminum electrolytic capacitor
The number that wherein manufactures a finished product is that the yields after 5001 sortings is 99.48%, and wherein loss is bad 2, and leakage current is bad to be 24.
Embodiment 2:
A kind of polymer solid aluminum electrolytic capacitor, specification are 2.5V820 μ F, and production quantity is 5000, and the step of its making is following:
1, through core bag up-coiler the VF value is wound into core bag 1 for 8V is anodizing to aluminium foil, negative electrode formed aluminum foil, electrolytic paper, electrolytic paper is between being anodizing between aluminium foil and the negative electrode formed aluminum foil, and the back Cathode Foil of reeling encases core bag 1;
2, Jiao Gai is installed on the core bag 1, and the mode of core bag 1 like Fig. 1 is welded on the iron bar 2, guarantee the consistency of welding and assembling height, the iron bar that welds 2 is put on the pallet, the material of pallet can be a stainless steel for the material of conduction, irony, or copper etc.;
3, the core bag 1 of winding is put into changed into liquid, the degree of depth of immersion is with 1/2 place of Jiao Gai.
4, applying formation voltage is 3.0V, and application time is 2 minutes, applies voltage 4.0V again; Application time is 2 minutes, applies voltage 6.0V again, and application time is 6 minutes; Changing into liquid is that ammonium adipate changes into liquid, and it is that oxidation film layer to aluminium foil surface is repaired that core bag 1 changes into;
5, core bag 1 being placed temperature is that 280 ℃ high temperature oven carries out carbonization treatment; The time of carbonization treatment is 10 minutes; Carbonization treatment is that the electrolytic paper in the core bag 1 is carried out carbonization treatment; The mode of handling can be puts into high temperature oven, or places on the panel of high temperature or with other any can heat-treating core bag 1 mode that core bag 1 heats;
6, repeat the step gather 3 with step 4, repeat 6 times core bag 1 changed into and carbonization treatment;
7, core bag 1 is put into oxidant respectively and monomer carries out impregnation, carry out polymerization reaction after the impregnation, in capacitor core bag 1, generate conducting polymer;
8, core bag 1 after the polymerization reaction is packed in the aluminum hull, seal behind the crimping, isolated with external environment, prevent product moisture absorption or contaminated back performance depreciation;
9, packaged product is carried out burin-in process with 2.5V, worn out and replied test after 2 hours.
Table 2 is a 2.5V820 μ F polymer solid aluminum electrolytic capacitor in the capacitance under the 120Hz frequency, loss, measured value and the leakage current measuring value of ESR under the 100KHz frequency.
| Sequence number | Capacity (uf) | Loss (100%) | ESR(mΩ) | Leakage current (uA/1 minute) |
| Specification | -15%--18% | 6.0 | 8.0 | ?410 |
| 1 | 921.5 | 1.40 | 4.2 | ?12 |
| 2 | 915.8 | 1.47 | 4.2 | ?9 |
| 3 | 905.8 | 1.33 | 4.3 | ?5 |
| 4 | 908.3 | 1.31 | 4.2 | ?9 |
| 5 | 914.3 | 1.46 | 4.3 | ?7 |
| 6 | 911.5 | 1.47 | 4.8 | ?18 |
| 7 | 909.7 | 1.27 | 4.4 | ?6 |
| 8 | 918.4 | 1.34 | 4.5 | ?4 |
| 9 | 917.0 | 1.33 | 4.2 | ?10 |
| 10 | 907.9 | 1.33 | 4.5 | ?11 |
| Maximum | 921.5 | 1.47 | 4.8 | ?18 |
| Minimum value | 905.8 | 1.27 | 4.2 | ?4 |
| Mean value | 913.02 | 1.371 | 4.36 | ?9.1 |
The measured value of table 22.5V820 μ F polymer solid aluminum electrolytic capacitor
The number that wherein manufactures a finished product is that the yields after 4995 sortings is 99.59%, and wherein loss is bad 1, and leakage current is bad to be 19.
What should explain at last is: more than be merely the preferred embodiments of the present invention; Be not limited to the present invention; Although with reference to embodiment the present invention has been carried out detailed explanation, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing; Perhaps part technical characterictic wherein is equal to replacement; But all within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the manufacturing approach of solid electrolyte aluminium electrolytic capacitor is characterized in that: may further comprise the steps,
1) gets involved electrolytic paper and be wound into the core bag being anodizing between aluminium foil and the negative electrode formed aluminum foil, tighten with high temperature gummed tape, and core is packed the gluing lid;
The core bag anode guide pin that 2) Jiao Gai will be housed is welded on the iron bar;
3) the core bag immerses to change into and changes into repair process in the liquid;
The core bag that 4) will change into after the repair process carries out carbonization treatment;
5) 3 and 4 step repeats 2-10 for several times;
6) the core bag immerses to change into and changes into repair process in the liquid;
7) the core bag carries out monomer respectively, the oxidant impregnation, and heated polymerizable, the aluminum hull of packing into seals, and burin-in process is processed product.
2. the manufacturing approach of solid electrolyte aluminium electrolytic capacitor according to claim 1; It is characterized in that: the core bag of said step 3 immerses to change into and changes into repair process in the liquid and comprise: the positive pole of power supply is inserted pallet; Pallet links to each other with iron bar; The positive pole of core bag links to each other with iron bar, and power cathode links to each other with core bag negative pole, and core wraps in to change in the liquid and repairs after powering up.
3. the manufacturing approach of solid electrolyte aluminium electrolytic capacitor according to claim 1 is characterized in that: said high temperature gummed tape is polyimide adhesive tape or polyphenylene sulfide adhesive tape, and said Jiao Gai is butyl rubber Jiao Gai.
4. the manufacturing approach of solid electrolyte aluminium electrolytic capacitor according to claim 1 is characterized in that: the welding manner of said step 2 is spot welding, and anode is welded on the iron bar, and the welding range error is ± 0.5mm.
5. the manufacturing approach of solid electrolyte aluminium electrolytic capacitor according to claim 1 is characterized in that: the said liquid that changes into is that ammonium adipate system changes into liquid, boric acid system changes into liquid or phosphoric acid system changes into liquid.
6. the manufacturing approach of solid electrolyte aluminium electrolytic capacitor according to claim 1 is characterized in that: the said immersion depth that changes into repair process SMIS bag is that glue covers the lower edge of 2/3 place to Jiao Gai.
7. the manufacturing approach of solid electrolyte aluminium electrolytic capacitor according to claim 1; It is characterized in that: the said voltage that changes into reparation is that staged increases; Be respectively 1/2 formation voltage, 2/3 formation voltage and formation voltage, the time that applies is respectively 1/3 of total time.
8. the manufacturing approach of solid electrolyte aluminium electrolytic capacitor according to claim 7 is characterized in that: the said voltage that changes into reparation is that staged increases, and is respectively 1/2 formation voltage, is 1/5T between applying into; 2/3 formation voltage, application time are 1/5T; Formation voltage, application time are 3/5T, and wherein, T is total time.
9. the manufacturing approach of solid electrolyte aluminium electrolytic capacitor according to claim 1 is characterized in that: said monomer is the thiophene-based material, and said oxidant is p-methyl benzenesulfonic acid and salt thereof.
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| CN107331519A (en) * | 2017-08-11 | 2017-11-07 | 佛山市三水日明电子有限公司 | A kind of manufacture method of solid-state capacitor |
| CN107393732A (en) * | 2017-08-11 | 2017-11-24 | 佛山市三水日明电子有限公司 | A kind of formation device of solid-state capacitor |
| CN107578923A (en) * | 2017-08-11 | 2018-01-12 | 佛山市三水日明电子有限公司 | A kind of formation device of aluminium electrolutic capacitor |
| CN107610947A (en) * | 2017-08-11 | 2018-01-19 | 佛山市三水日明电子有限公司 | A kind of manufacture method of solid electrolyte/aluminum electrolytic capacitor |
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| CN110690445B (en) * | 2019-10-12 | 2022-06-07 | 福建师范大学 | Preparation method of polyaluminium coated nickel cobalt lithium manganate material |
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Application publication date: 20120919 |