CN101667494A - Method for preparing aluminum electrolytic capacitor with ultra-small volume specially used for energy-saving lamp - Google Patents
Method for preparing aluminum electrolytic capacitor with ultra-small volume specially used for energy-saving lamp Download PDFInfo
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Abstract
The invention provides a method for preparing an aluminum electrolytic capacitor with ultra-small volume specially used for an energy-saving lamp. The method is characterized in that the method comprises the following specific steps: step one: press-riveting an anode aluminium foil and the tongue of a positive guide pin; step two: press-riveting the cathode aluminium foil and the tongue of a negative guide pin; step three: arranging a low-density dual-layer electrolytic paper between the tongue of the positive guide pin and the tongue of the negative guide pin; and arranging a high-density dual-layer electrolytic paper between the tongue of the negative guide pin and the low-density dual-layer electrolytic paper; step four: arranging the low-density dual-layer electrolytic paper on the lower surface of the cathode aluminum foil and arranging the high-density dual-layer electrolytic paper on the lower surface of the low-density dual-layer electrolytic paper, thus obtaining a multi-layerstructure; step five: arranging an electronic adhesive tape at the end of the low-density dual-layer electrolytic paper between the tongue part of the positive guide pin and the tongue part of the negative guide pin; curling up and fixing the multi-layer structure, dipping the multi-layer structure in the electrolyte and arranging the multi-layer structure in a bottom tubular aluminium shell; andsealing the opening of the aluminium shell by a rubber plug. The method has the advantages that the volume of the product is ultra-small, the performance is stable, the high-temperature resistance isgood and the service life is long.
Description
Technical field
The present invention relates to a kind of preparation method of aluminium electrolytic capacitor of ultra-small volume of electricity-saving lamp special use, belong to the aluminium electrolytic capacitor technical field.
Background technology
At present, the electricity-saving lamp style is more and more attractive in appearance in the illuminating industry, and the lamp type is done littler and littler, and structure is more and more compacter, but the requirement of life-span aspect is also more and more higher, and this is the development trend of illuminating industry.The widely-used active demand that must bring of miniaturization, compact type energy-saving lamp to the miniaturization of alminium electrolytic condenser, but meanwhile, its lamp cavity temperature of the electricity-saving lamp of miniaturization, compact is higher, equally alminium electrolytic condenser has been proposed the higher requirement of heatproof.There is investigation to show, be exclusively used in alminium electrolytic condenser on miniaturization, the compact type energy-saving lamp than the volume-diminished 30% of conventional alminium electrolytic condenser even more, and concerning the operating ambient temperature of alminium electrolytic condenser, lamp cavity temperature under its operating state of the electricity-saving lamp of non-miniaturization is generally 95 ℃-105 ℃, and the lamp cavity temperature of miniaturization, compact type energy-saving lamp is then up to 115 ℃-125 ℃.
And in the special-purpose aluminium electrolytic capacitor production technology of traditional electricity-saving lamp, owing to there are many technical bottlenecks, so it is unworkable directly to dwindle the method for small product size, must cause the electrochemical capacitor heatproof not reach problems such as requirement, product instability, early failure because directly dwindle small product size, run in the opposite direction with the trend and the active demand of electricity-saving lamp miniaturization, densification, and want to produce the special-purpose alminium electrolytic condenser of the electricity-saving lamp that meets the demands, just must there be new technology to break through, must makes a large amount of improvement.
As shown in Figure 1, be traditional aluminium electrolytic capacitor structural representation, the tongue thorn riveting of positive guide pin 6 is located at the tongue thorn riveting of anodal aluminium foil 1 following, negative guide pin 5 and is located at above the negative pole aluminium foil 2, alternating floor electrolytic paper 3 between negative guide pin 5 and the positive guide pin 6, be wound into sub-prime then together, again with ending the binding of loose adhesive tape after impregnation electrolyte, assembling, sleeve pipe, become finished product after aging.But the alminium electrolytic condenser of producing traditionally is because technical limitation and its process characteristic cause its volume generally all bigger.
Have many imperfection parts to cause producing satisfactory small size product in the traditional handicraft at present:
Positive guide pin 6 and negative guide pin 5 are the guide pin of conventional form, can't select the face operation to guide pin burr face
Positive guide pin 6 and negative guide pin 5 all do not do to add pressure-resistant treatments or making alive only arrives 200V;
Cathode foil bending intensity 40 is got back to about 80 times, intensity difference;
Cathode foil 1 purity about 99.92%, the impurity content height;
The riveted joint mode is the acupuncture riveted joint;
Electrolytic paper adopts single-part stationery or simple multi-ply paper stack, and purpose is only in order to prevent the burr puncture short.
Summary of the invention
The preparation method who the purpose of this invention is to provide the ultra-small volume aluminium electrolytic capacitor of a kind of miniaturization electricity-saving lamp special use.
For realizing above purpose, the technical solution used in the present invention provides a kind of preparation method of aluminium electrolytic capacitor of ultra-small volume of electricity-saving lamp special use, it is characterized in that concrete steps are:
The first step: with the positive guide pin tongue of the positive guide pin of off-centre be located at anodal aluminium foil below, the burr face of positive guide pin tongue is towards anodal aluminium foil, with the riveted joint that presses of anodal aluminium foil and positive guide pin tongue;
Second step: with the negative guide pin tongue of the negative guide pin of off-centre be located at the negative pole aluminium foil above, the burr face of negative guide pin tongue is towards the negative pole aluminium foil, with the riveted joint that presses of negative pole aluminium foil and negative guide pin tongue;
The 3rd step: between positive guide pin tongue and negative guide pin tongue, place the double-deck electrolytic paper of low-density, between negative guide pin tongue and the double-deck electrolytic paper of low-density, place hd dual-layered electrolytic paper;
The 4th step: below the negative pole aluminium foil, place the double-deck electrolytic paper of low-density, below the double-deck electrolytic paper of low-density, place hd dual-layered electrolytic paper and obtain sandwich construction;
The 5th step: the termination of the double-deck electrolytic paper of the low-density between positive guide pin tongue and negative guide pin tongue is provided with the electron level adhesive tape, it is fixing with electron level adhesive tape bonding that the 4th sandwich construction that obtain of step is rolled the back, wherein anodal aluminium foil is the most inboard, the structure impregnation electrolyte of spooling is placed in the band bottom tube shape aluminum hull, with the opening of rubber plug sealing aluminum hull.
Further, the positive guide pin of described off-centre comprises positive guide pillar and is located at the positive guide pillar front center positive guide pin tongue of side on the lower side that described positive guide pin tongue upper surface is the burr face.
The negative guide pin of described off-centre comprises negative guide pillar and is located at the negative guide pillar front center negative guide pin tongue of side on the lower side that described negative guide pin tongue lower surface is the burr face.
Positive guide pin of described off-centre and eccentric negative guide pin all add pressure-resistant treatments through 600V.
It is the above aluminium foil of 99.99wt% that described anodal aluminium foil adopts aluminium content.
The bending intensity of described anodal aluminium foil is 200 times.
Described negative pole aluminium foil adds pressure-resistant treatments through 11V.
The density of the double-deck electrolytic paper of described low-density is 0.40g/cm
3-0.50g/cm
3
The density of described hd dual-layered electrolytic paper is 0.70g/cm
3-0.80g/cm
3
Principle of the present invention is:
1, adopts eccentric guide pin: can select face to guide pin aluminium tongue position, thereby guarantee that the jagged one side in guide pin aluminium tongue position can not contact with electrolytic paper, stop the appearance of big electric current, thereby effectively reduce the consumption of electrolyte and delay electrolytic paper dry, guarantee electric capacity in the long-term work state especially in middle and later periods electrochemical capacitor stable performance, its temperature rise control is in 5 ℃ after this scheme is adopted in test, in the experimental verification in the miniaturization electricity-saving lamp, maximum temperaturerise is 5 ℃, and the average life span of electrochemical capacitor improves about 20%.
2, just guide pin aluminium tongue position making alive reaches 600V.If withstand voltage only 200V of oxide-film or 350V herein, then flaw appears in oxide-film very soon in the 125 DEG C high temperature environment in the lamp chamber, and big electric current will appear in the flaw point place of guide pin aluminium tongue part, causes the local performance degradation of product, heating to rise, and life of product shortens.Adopt this programme to guarantee effectively that then the ultra-small volume product is under high temperature, high-tension operational environment, and when having the high frequency large ripple current to pass through, the oxide-film on guide pin aluminium tongue surface can keep the same with initial condition, thereby effectively improves the resistant to elevated temperatures ability of ultra-small volume product.
3, bear guide pin aluminium tongue position making alive and reach 600V.Work under the 125 DEG C high temperature environment of ultra-small volume product in the lamp chamber, the high frequency large ripple current acts on when bearing guide pin, adopts this programme can effectively improve the ultra-small volume product bears large ripple current under hot environment ability.
4, adopt the cathode foil of bending intensity up to 200 times.The cathode foil pliability is good, when bending intensity is high, bad phenomenon such as the disconnected paper tinsel that could in the dwindling of small product size, avoid bringing in the winding process, crackle damage, the destruction of reducing ultra-small volume product oxide-film, thus reduce flaw, reduce heating, guaranteed product stable performance at high temperature.
5, employing adds withstand voltage anode foil up to 11V.Under the ultra-small volume product operating state, the ripple current that the electricity-saving lamp circuit imposes on the ultra-small volume electrochemical capacitor can act on anode foil equally, if anode foil is making alive or making alive 2-3V not, then at high temperature the anode foil oxide-film is very easy to occur degradation phenomena, and under the large ripple current effect, the anode foil surface produces electrochemical reaction and produces a large amount of gases of a large amount of heats association simultaneously, causes the properties of product deterioration.And if during anode foil pressurization 11V, oxide-film can bear higher temperature and be not easy deterioration, thereby improves the product heat resistance.
6, adopt more highly purified cathode foil, aluminium content is more than 99.99%.The alminium electrolytic condenser product works under the environment of high temperature, high voltage, large ripple current, the aluminium content of cathode foil brings up at 99.99% o'clock by 99.92%, impurity concentration in the aluminium foil is reduced to 0.01% from 0.08%, reduce by 7 times, and the impurity element of high concentration is at high temperature understood and electrolyte generation electrochemical reaction with high voltage is following, the deterioration properties of product.Can improve the product resistance to elevated temperatures so improve cathode foil purity.
7, adopt total head riveter skill in positive guide pin riveted joint place.Common process is positive guide pin to be placed on to have the riveting pin that cathode foil and positive guide pin are pierced through riveting then together on the cathode foil then flat, and total head riveter skill then is positive guide pin to be put on the cathode foil clap together.The two difference is: produce behind the acanthopore in the conventional thorn rivetting method a lot of cathode foil chips be bonded at the acanthopore limit and produce in enormous quantities in can't in time clear up this chip at all, so be embedded between riveted joint petal and the cathode foil at aluminium foil chip after the riveted joint, cause this place that a large amount of aluminium bits burrs are arranged, the existence order riveted joint petal of other chip contacts not tight with the paper tinsel face, the problem of bringing the riveted joint impedance to increase.Total head riveter skill is then because of guide pin and paper tinsel comprehensive engagement, so effectively stop above-mentioned phenomenon.After adopting total head riveter skill, the riveted joint impedance of ultra-small volume product is reduced to 0.2 milliohm from 0.5 milliohm, reduces by 40%.In the conventional clinching method, riveted joint place has the heating phenomenon during by electric current, total head riveting mode next because of its impedance little so the heating hardly of this place has prolonged life of product.
8, adopt the production technology of two layers of paper, wherein one deck paper is the low-density duplex paper, and another layer is hd dual-layered paper.The technology of duplex paper can reduce burr and pierce through the puncture short phenomenon that electrolytic paper brings, can between negative guide pin and cathode foil, make buffering to reduce of the injury of negative guide pin seamed edge to cathode foil, the particularly important is in addition, the speed of low-density duplex paper Electolyte-absorptive very soon and very many, compare with the hd dual-layered paper of same thickness, infiltration rate is fast 40%, and uptake increases by 80%.Adopt the advantage of duplex paper technology to be: improve the production efficiency of impregnation operation and whole process of production on the one hand greatly, the amount of product Electolyte-absorptive increases greatly on the other hand.Thereby can satisfy the electrolyte consumption of ultra-small volume product under high-temperature work environment, improve the product heat resistance.
Advantage of the present invention is: can improve that product is high temperature resistant, the ability of anti-ripple current and guarantee the useful life of ultra-small volume product under hot environment; Small product size is extra small, stable performance, resistance to elevated temperatures is good, the life-span is long.
Description of drawings
Fig. 1 is traditional aluminium electrolytic capacitor structural representation;
Fig. 2 is the aluminium electrolytic capacitor structural representation of the ultra-small volume of electricity-saving lamp special use;
Fig. 3 is eccentric positive guide pin schematic diagram;
Fig. 4 is eccentric negative guide pin schematic diagram.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 2, be the aluminium electrolytic capacitor structural representation of the ultra-small volume of electricity-saving lamp special use, the aluminium electrolytic capacitor of the ultra-small volume of described electricity-saving lamp special use is made up of anodal aluminium foil 1, negative pole aluminium foil 2, hd dual-layered electrolytic paper 3, electron level adhesive tape 4, eccentric negative guide pin 12, eccentric positive guide pin 13 and the double-deck electrolytic paper 7 of low-density.
As shown in Figure 3, for being eccentric positive guide pin schematic diagram, the positive guide pin 13 of described off-centre comprises positive guide pillar 8 and is located at the positive guide pillar 8 front center positive guide pin tongue 9 of side on the lower side that described positive guide pin tongue 9 upper surfaces are the burr face.As shown in Figure 4, be the negative guide pin schematic diagram of off-centre, the negative guide pin 12 of described off-centre comprises negative guide pillar 10 and is located at the negative guide pillar 10 front center negative guide pin tongue 11 of side on the lower side that described negative guide pin tongue 11 lower surfaces are the burr face.Positive guide pin 13 of described off-centre and eccentric negative guide pin 12 all add pressure-resistant treatments through 600V, the described pressure-resistant treatments method that adds is: positive guide pin 13 of off-centre or eccentric negative guide pin 12 are connected with positive source, positive guide pin tongue 9 or negative guide pin tongue 11 are immersed in the boric acid aqueous solution of 7% mass concentration, with titanium mesh as negative pole, predeterminated voltage 600V, turn on the power switch the beginning up voltage then, guide pin aluminium surface begins to generate oxide-film.Final when voltage is raised to 600V, the guide pin surface reaches pressurization 600V.It is the above aluminium foil of 99.99wt% that described anodal aluminium foil 1 adopts aluminium content.The bending intensity of described anodal aluminium foil 1 is 200 times.The surface of described negative pole aluminium foil 2 is through the 11V pressure-resistant treatments, the described pressure-resistant treatments method that adds is for to be connected negative pole aluminium foil 2 with positive source, negative pole aluminium foil 2 is immersed in the boric acid aqueous solution of 7% mass concentration, with titanium mesh as negative pole, predeterminated voltage 11V, turn on the power switch the beginning up voltage then, aluminium foil aluminium surface begins to generate oxide-film.Final when voltage is raised to 11V, aluminium foil surface reaches pressurization 11V.The density of hd dual-layered electrolytic paper 3 is 0.70g/cm
3, the density of the double-deck electrolytic paper 7 of low-density is 0.55g/cm
3Hd dual-layered electrolytic paper 3 (this electrolytic paper is the WM270-50 electrolytic paper that Shandong southern Shandong paper is already produced) adopts wood pulp cellulose and manila hemp fiber two-layer compound to make, and the double-deck electrolytic paper 7 of low-density (this electrolytic paper is the E255-40 electrolytic paper that Shandong southern Shandong paper is already produced) adopts Spanish grass (Esparto) fiber two-layer compound to make.
Its preparation method is as follows:
The first step: with the positive guide pin tongue 9 of the positive guide pin 13 of off-centre be located at anodal aluminium foil 1 below, the burr face of positive guide pin tongue 9 is towards anodal aluminium foil 1, with the riveted joint that presses of anodal aluminium foil 1 and positive guide pin tongue 9;
Second step: with the negative guide pin tongue 11 of the negative guide pin 12 of off-centre be located at negative pole aluminium foil 2 above, the burr face of negative guide pin tongue 11 is towards negative pole aluminium foil 2, with the riveted joint that presses of negative pole aluminium foil 2 and negative guide pin tongue 11;
The 3rd step: between positive guide pin tongue 9 and negative guide pin tongue 11, place the double-deck electrolytic paper 7 of low-density, between negative guide pin tongue 11 and the double-deck electrolytic paper 7 of low-density, place hd dual-layered electrolytic paper 3;
The 4th step: below negative pole aluminium foil 2, place the double-deck electrolytic paper 7 of low-density, below the double-deck electrolytic paper 7 of low-density, place hd dual-layered electrolytic paper 3 and obtain sandwich construction;
The 5th step: the termination of the double-deck electrolytic paper 7 of the low-density between positive guide pin tongue 9 and negative guide pin tongue 11 is provided with electron level adhesive tape 4, it is fixing with electron level adhesive tape 4 bondings that the 4th sandwich construction that obtain of step is rolled the back, wherein anodal aluminium foil 1 is the most inboard, with the structure impregnation electrolyte of spooling (this electrolyte is the FS-01A electrolyte of source of a specified duration, Guangzhou electron production), the electrolyte main component is ethylene glycol and ammonium salt organic acid, hot plate through high temperature and to form, be placed in the band bottom tube shape aluminum hull, with the opening of rubber plug sealing aluminum hull.
Be similar to embodiment 1, difference is that the density of hd dual-layered electrolytic paper 3 is 0.70g/cm
3, (this electrolytic paper is the WM270-50 electrolytic paper that Shandong southern Shandong paper is already produced), the density of the double-deck electrolytic paper 7 of low-density is 0.50g/cm
3(this electrolytic paper is the E250-40 electrolytic paper that Shandong southern Shandong paper is already produced).
Be similar to embodiment 1, difference is that the density of hd dual-layered electrolytic paper 3 is 0.70g/cm
3, (this electrolytic paper is the WM270-50 electrolytic paper that Shandong southern Shandong paper is already produced), the density of the double-deck electrolytic paper 7 of low-density is 0.45g/cm
3(this electrolytic paper is the E245-40 electrolytic paper that Shandong southern Shandong paper is already produced).
Through testing:
The ultra-small volume product carries out repeatedly the life experiment checking under 135 ℃-140 ℃ high temperature, life-span all reaches specified expection and the different situation of parameter height do not occur, consistency is better, good stability, and compare with the product of the same size of going together, each parameter of ultra-small volume product is slightly excellent behind life experiment.
When in the life experiment ultra-small volume product being applied doubly rated ripple current of 2.0-3.0, only 3 ℃ of the temperature rises that its body self-heating cooking causes are than low 2-3 ℃ of the product temperature rise of colleague's same size.
The amount of the electrolyte that the ultra-small volume product is absorbed is compared with the same specification conventional products and is only lacked 5%-9%, but the amount of consumption electrolyte only is the 50%-60% of same specification conventional products in its course of work, so the life-span of ultra-small volume product is more guaranteed.
Claims (9)
1, a kind of preparation method of aluminium electrolytic capacitor of ultra-small volume of electricity-saving lamp special use is characterized in that, concrete steps are:
The first step: with the positive guide pin tongue (9) of the positive guide pin of off-centre (13) be located at anodal aluminium foil (1) below, the burr face of positive guide pin tongue (9) is towards anodal aluminium foil (1), with anodal aluminium foil (1) and just guide pin tongue (9) riveted joint that presses;
Second step: with the negative guide pin tongue (11) of the negative guide pin (12) of off-centre be located at negative pole aluminium foil (2) above, the burr face of negative guide pin tongue (11) is towards negative pole aluminium foil (2), with the riveted joint that presses of negative pole aluminium foil (2) and negative guide pin tongue (11);
The 3rd step: between positive guide pin tongue (9) and negative guide pin tongue (11), place the double-deck electrolytic paper (7) of low-density, between negative guide pin tongue (11) and the double-deck electrolytic paper of low-density (7), place hd dual-layered electrolytic paper (3);
The 4th step: below negative pole aluminium foil (2), place the double-deck electrolytic paper (7) of low-density, below the double-deck electrolytic paper of low-density (7), place hd dual-layered electrolytic paper (3) and obtain sandwich construction;
The 5th step: the termination of the double-deck electrolytic paper of low-density (7) between positive guide pin tongue (9) and negative guide pin tongue (11) is provided with electron level adhesive tape (4), it is fixing with electron level adhesive tape (4) bonding that the 4th sandwich construction that obtain of step is rolled the back, wherein anodal aluminium foil (1) is the most inboard, the structure impregnation electrolyte of spooling is placed in the band bottom tube shape aluminum hull, with the opening of rubber plug sealing aluminum hull.
2, the preparation method of the aluminium electrolytic capacitor of the ultra-small volume of a kind of electricity-saving lamp special use as claimed in claim 1, it is characterized in that, the positive guide pin of described off-centre (13) comprises positive guide pillar (8) and is located at positive guide pillar (8) the front center positive guide pin tongue (9) of side on the lower side that described positive guide pin tongue (9) upper surface is the burr face.
3, the preparation method of the aluminium electrolytic capacitor of the ultra-small volume of a kind of electricity-saving lamp special use as claimed in claim 1, it is characterized in that, described off-centre is born guide pin (12) and is comprised negative guide pillar (10) and be located at negative guide pillar (10) the front center negative guide pin tongue (11) of side on the lower side that described negative guide pin tongue (11) lower surface is the burr face.
4, the preparation method of the aluminium electrolytic capacitor of the ultra-small volume of a kind of electricity-saving lamp special use as claimed in claim 1 is characterized in that, positive guide pin of described off-centre (13) and eccentric negative guide pin (12) all add pressure-resistant treatments through 600V.
5, the preparation method of the aluminium electrolytic capacitor of the ultra-small volume of a kind of electricity-saving lamp special use as claimed in claim 1 is characterized in that, it is the above aluminium foil of 99.99wt% that described anodal aluminium foil (1) adopts aluminium content.
6, the preparation method of the aluminium electrolytic capacitor of the ultra-small volume of a kind of electricity-saving lamp special use as claimed in claim 1 is characterized in that, the bending intensity of described anodal aluminium foil (1) is 200 times.
7, the preparation method of the aluminium electrolytic capacitor of the ultra-small volume of a kind of electricity-saving lamp special use as claimed in claim 1 is characterized in that, the surface of described negative pole aluminium foil (2) adds pressure-resistant treatments through 11V.
8, the preparation method of the aluminium electrolytic capacitor of the ultra-small volume of a kind of electricity-saving lamp special use as claimed in claim 1 is characterized in that, the density of the double-deck electrolytic paper of described low-density (7) is 0.40g/cm
3-0.50g/cm
3
9, the preparation method of the aluminium electrolytic capacitor of the ultra-small volume of a kind of electricity-saving lamp special use as claimed in claim 1 is characterized in that, the density of described hd dual-layered electrolytic paper (3) is 0.70g/cm
3-0.80g/cm
3
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Cited By (5)
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| CN102237201A (en) * | 2010-04-28 | 2011-11-09 | 王兴久 | Aluminum electrolytic capacitor applying high hydrous electrolyte and method for making aluminum electrolytic capacitor |
| CN106910634A (en) * | 2016-09-14 | 2017-06-30 | 深圳市中元吉康电子有限公司 | The high pressure super-low impedance aluminium electrolutic capacitor of EMI excellents |
| CN108597881A (en) * | 2018-04-12 | 2018-09-28 | 常州华威电子有限公司 | Resistance to big direct current impact electrolytic capacitor of one kind and preparation method thereof |
| CN110706928A (en) * | 2019-09-25 | 2020-01-17 | 富之庆电子（深圳）有限公司 | Guide pin type aluminum electrolytic capacitor and production method thereof |
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| JP2000100664A (en) * | 1998-09-25 | 2000-04-07 | Elna Co Ltd | Acoustic electrolytic capacitor |
| CN201117442Y (en) * | 2007-08-27 | 2008-09-17 | 上海永铭电子有限公司 | Aluminum electrolysis capacitor |
| CN201266550Y (en) * | 2008-09-28 | 2009-07-01 | 上海永铭电子有限公司 | Aluminum electrolysis capacitor for reducing marginal discharge phenomena |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102237201A (en) * | 2010-04-28 | 2011-11-09 | 王兴久 | Aluminum electrolytic capacitor applying high hydrous electrolyte and method for making aluminum electrolytic capacitor |
| CN106910634A (en) * | 2016-09-14 | 2017-06-30 | 深圳市中元吉康电子有限公司 | The high pressure super-low impedance aluminium electrolutic capacitor of EMI excellents |
| CN106910634B (en) * | 2016-09-14 | 2019-06-04 | 深圳市中元吉康电子有限公司 | The high pressure super-low impedance aluminium electrolutic capacitor of EMI excellent |
| CN108597881A (en) * | 2018-04-12 | 2018-09-28 | 常州华威电子有限公司 | Resistance to big direct current impact electrolytic capacitor of one kind and preparation method thereof |
| CN110706928A (en) * | 2019-09-25 | 2020-01-17 | 富之庆电子（深圳）有限公司 | Guide pin type aluminum electrolytic capacitor and production method thereof |
| CN110706928B (en) * | 2019-09-25 | 2021-08-13 | 富之庆电子（深圳）有限公司 | Guide pin type aluminum electrolytic capacitor and production method thereof |
| CN112927937A (en) * | 2021-01-23 | 2021-06-08 | 深圳市凯特电子有限公司 | Processing technology of high-voltage electrolytic capacitor for gallium nitride charger |
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