CN202003844U - Aluminium electrolytic capacitor - Google Patents
Aluminium electrolytic capacitor Download PDFInfo
- Publication number
- CN202003844U CN202003844U CN201120066576XU CN201120066576U CN202003844U CN 202003844 U CN202003844 U CN 202003844U CN 201120066576X U CN201120066576X U CN 201120066576XU CN 201120066576 U CN201120066576 U CN 201120066576U CN 202003844 U CN202003844 U CN 202003844U
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- lead wire
- capacitor element
- lead
- slices
- hush panel
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Abstract
The utility model provides an aluminium electrolytic capacitor. A capacitor element which is formed by winding an anode foil and a cathode foil in a mode that a diaphragm is arranged between the anode foil and the cathode foil is accommodated in a metal shell with a sealing plate; the anode foil and the cathode foil are connected with one ends of lead slices and the lead slices are led out from the side of the sealing plate; and the other ends of the lead slices are connected with an external terminal arranged on the sealing plate. When an electrode impedance is reduced for corresponding to a high ripple current and the like, the number of the lead slices is increased. If the arrangement places of the lead slices are dispersed to the outer peripheries of reels from roll cores of electrode foils of the capacitor element, when the capacitor element is accommodated in the shell and the lead slices are folded to be accommodated, the condition that part of the lead slices at the side of an anode are in contact with the metal shell at the side of a ground wire to generate shirt circuit cannot be generated. Insulating tapes are arranged along the outer periphery of the capacitor element in a mode of surrounding the lead slices which are led out.
Description
Technical field
The utility model relates to a kind of aluminium electrolytic capacitor.
Background technology
At present, aluminium electrolytic capacitor uses aluminium foil as anode and negative electrode, and across membrane coil around forming capacitor element, in electrolyte is accommodated in the shell that has hush panel.For by this capacitor element to outside extraction electrode, be connected an end of the lead wire that constitutes by aluminium foil with negative electrode at anode, and, connect the outside terminal that is arranged on hush panel at the lead wire other end.
But, when lead wire is connected with outside terminal, increase length in order to simplify attended operation, when taking in the enclosure, shown in patent documentation 1, take in after folding.
Patent documentation 1: Japan opens clear 55-103951 communique in fact
The utility model content
But, for the high ripple of correspondence (リ プ Le) electric current etc., the method that reduces electrode impedance is effective, but when reducing electrode impedance, if increase the sheet number of lead wire, the place of connecting is provided with by the periphery that the volume core of the electrode foil of capacitor element is dispersed to spool, then capacitor element is taken in the enclosure and lead wire is folding and when taking in, and exists a part that produces the anode-side lead wire to contact with the metal shell of ground wire side and the unfavorable condition that is short-circuited.
The purpose of this utility model is to provide a kind of lead wire to contact the aluminium electrolytic capacitor of situations such as also not being short-circuited with metal shell.
In order to solve above-mentioned problem, the purpose of this utility model is to provide a kind of aluminium electrolytic capacitor, it will be accommodated in the metal shell that has hush panel around the capacitor element that anode foils and Cathode Foil form across membrane coil, and described anode foils is connected with an end of lead wire with described Cathode Foil and this lead wire is exported to described hush panel side, the other end of described lead wire is connected with outside terminal on being arranged on described hush panel, it is characterized in that, with the mode of the described lead wire that surround to derive periphery, insulating tape is sticked on the end at least of described capacitor element along described capacitor element.
In addition, the utility model also provides a kind of aluminium electrolytic capacitor, it will be across membrane coil around anode foils and Cathode Foil and reel fixedly by insulating tape that the capacitor element of periphery is accommodated in the metal shell that has hush panel, and described anode foils is connected with an end of lead wire with described Cathode Foil and this lead wire is derived from described hush panel side, the other end of described lead wire is connected with outside terminal on being arranged on described hush panel, it is characterized in that, described insulating tape is derived to described lead wire side in the mode of surrounding this lead wire, and paste along the periphery of described capacitor element.
According to the utility model, because the mode of the lead wire that derives with the hush panel side that is enclosed in capacitor element is provided with insulating tape along the periphery of capacitor element, therefore, capacitor element taken in the enclosure and with lead wire is folding when taking in, the part of anode-side lead wire contacts with the metal shell of ground side and is difficult to the phenomenon that is short-circuited.
Therefore, can easily provide a kind of aluminium electrolytic capacitor that has increased lead wire sheet number when reducing electrode impedance for the high ripple current of correspondence.
Description of drawings
Fig. 1 represents the profile of aluminium electrolytic capacitor of the present utility model.
Fig. 2 represents the stereogram of the capacitor element of aluminium electrolytic capacitor of the present utility model.
Symbol description
1... lead wire, 2... end winding, 3... capacitor element, 4... insulating tape,
5... separating, hush panel, 6... outside terminal, 7... metal shell, 8... use projection
Embodiment
Anode foils described in the utility model is the common anode paper tinsel that is used for aluminium electrolytic capacitor, with aluminium foil about thickness 50 μ m～150 μ m etc. in acidic aqueous solution, etch processes is carried out on its surface, after etch-hole about diameter 0.1 μ m～2 μ m is set, in the aqueous solution such as aluminium borate, about 1.5 times the voltage that applies rated voltage changes into, and forms the anodic oxidation overlay film as the resistance to pressure of capacitor, changes into the back lead wire is installed.
Cathode Foil described in the utility model is the conventional cathode paper tinsel that is used for aluminium electrolytic capacitor, directly etch processes is carried out on the surface of the aluminium foil about thickness 20 μ m～100 μ m etc., perhaps be immersed in the acidic aqueous solution etch processes is carried out on its surface, and lead wire is installed.
Especially thickness is thick more, and thermal diffusivity is excellent more, and can obtain the shape stability of crooked easily Cathode Foil, so preferred, if but too thick, then the capacity of unit volume reduces, and therefore, preferred thickness is about 50 μ m～70 μ m.
Barrier film described in the utility model is that anode foils and Cathode Foil physical property are separately brought into play the porous matter sheet that keeps the electrolyte effect simultaneously, and the electrolytic paper that uses at present with Manila paper, hemp paper, brown paper etc. is main material.Its size is according to the size Selection of capacitor, but general width is wideer than anode foils width, and for about 1cm to 30cm, length is for counting cm to counting about m, and thickness is that number μ m is extremely about tens of μ m.As the structure of barrier film, except that single density paper, can also individual be multi-ply paper of the relative thick low-density layer of the close relatively high-density layer of fiber etc. with fiber.
Capacitor element described in the utility model be with anode foils and Cathode Foil across membrane coil such as electrolytic paper around and be immersed in the electrolyte.
Metal shell described in the utility model is made of the metal materials such as aluminium of end face opening, takes in capacitor element.That outward appearance forms is cylindric, the cylindrical shape of oval column or square.Can there be projection that fixed capacitor element roll core uses etc. in the central authorities of the bottom of inside of metal outershell.
The peristome of hush panel sealing metal outer casing top surface described in the utility model is molded as duplexer of forming on body, rubber molded product or the paper phenol insulation board etc. and is made by sheet rubber being fitted in embedded resin.In addition, on hush panel, under the situation that the metal shell internal pressure rises, the pressure valve of release pressure etc. is set also sometimes.
Be molded as body as embedded resin, in advance terminal be fixed on the shaping dies, heating mould behind the fixed mould makes molded resin material fusion that insulating material constitutes and flows into certain pressure, forms integratedly.It is made of insulating resins such as polypropylene, polyphenylene sulfide or phenolic aldehyde, and thickness is about about 3～50mm.Sometimes also dispose the elastomer that is made of the rubber elastomeric material, this elastomer mounting is on the projection that is arranged near the inner peripheral surface the shell, and being provided with step surface at the most peripheral of hush panel is leg-of-mutton projection.And, top because of the bending of the shell that curls into is absorbed in this elastomer improves seal.
As the duplexer that on paper phenolic aldehyde insulation board, is fitted with sheet rubber, make its heat cross-linking solidify the duplexer that forms after using in the paper substrates material phenolic resins before impregnated crosslinked to be dissolved in to form solution and drying in the ethanol etc.In addition, as the elastomeric material of sheet rubber, use butyl rubber, ethylene propylene rubber etc.In addition, at the resin molding (for example copolymer of polyethylene, polypropylene, ethene and propylene or polyphenylene sulfide film, fluororesin film etc.) of the overlapping ionic species barrier in the back side of the paper phenolic aldehyde insulation board that posts rubber, bonding one-tenth is whole.
Outside terminal described in the utility model is the terminal that runs through hush panel, in hush panel is that embedded resin is molded as under the situation of body, setting is by embedding the band screw terminal that is configured as one, in hush panel be under the situation of the duplexer that is fitted with sheet rubber on the paper phenolic aldehyde insulation board, from the rubber slab side rivet and metallic plate terminal mounted thereto are set, insertion is arranged on the through hole on the hush panel, in order to be connected and fixed the lead-in wire paper tinsel, end perforate at the lead-in wire paper tinsel, clamp with two aluminium packing rings, insert the column part of rivet, form the structure that mechanicalness is curled.
Lead wire described in the utility model is the conductor with capacitor element and outside terminal electrical connection, be the sheet with the aluminium foil cut growth strip gained of 50 μ m～500 μ m left and right thicknesses, its use is without the plane paper tinsel of asperities processing such as etching or the etched foil of enforcement asperities processing etc.About the lead wire of anode-side, also use and implement anodised material or do not implement the anodised material that does not change into.The bottom of this type of terminal is electrically connected with anode foils or Cathode Foil.The electrical connection of anode foils or Cathode Foil waits by fixing under the state of stacked respectively anode tap sheet in the surface of anode foils and Cathode Foil and cathode leg sheet or welding to be carried out.
Insulating tape described in the utility model is the smooth resin sheet of the thinner thickness about 2 μ m～100 μ m, about preferred 10 μ m～50 μ m, then keep intact if having thermal welding, if there is not thermal welding, then simultaneously apply the material of adhesiveness, cementability or thermal welding at it, with the mode of the lead wire that surround to derive periphery, stick on the end at least of capacitor element along capacitor element.Consider that from the insulation aspect contact hush panel inboard when the pressurizing window plate is grown on preferred insulating tape top.
As the manufacture method of insulating tape, for example melt extrude the resin particle that is called particle, cooling curing and carry out sheet on cylinder.Sometimes stretch after this.Resin dissolves is carried out filming in solvent the coating method system film of solvent flashing is different thereafter with utilizing, pin hole seldom or does not in fact have.There is the situation of utilizing existing manufacturing equipment to produce pin hole on sheet material in the thickness of resin sheet, so not preferred when 2 μ m are following.The thickness of resin flake is when 100 μ m are above, and resin flake loses flexible and not preferred easily.
As resin material, except thermal endurance, electrolyte resistance (for example alcohol resistance), select the little materials of permeability such as moisture oil content halogen.Particularly, can be selected from vinyl resins, ethylene propylene copolymer, polysulfone resin, polyethersulfone resin, polycarbonate resin, polyimide resins such as acrylic resin, mylar, polycarbonate resin, polyamide, polyacetal resin, Corvic, polyvinylidene fluoride resin, polyvinylidene chloride resin.
As adhesive material, can from acrylic compounds, polyisobutene, butyl rubber, chloroprene rubber etc., select.
As cementitious material, can from thermoplastic above-mentioned resin material and plasticity carbamate resins etc., select.
As the thermal welding material, for having the thermoplastic resin of thermal welding, can use its fusing point is resin about 130 ℃～330 ℃, as long as for the resin with thermal welding just is not particularly limited, when specifically enumerating thermoplastic resin used in the utility model, can enumerate: polyamide (nylon 6.6, nylon 6 etc.), fluoropolymer (perfluoroolefine, perfluorovinyl ether etc.), polyester (PET, PBT, Merlon etc.), polyacetals, polyphenylene oxide, polyphenylene sulfide, polysulfones, aromatic polyamide acid imide, Polyetherimide, aromatic polyester etc.In addition, can also be by in above-mentioned thermoplastic resin, cooperating epoxy resin, having the stability that crosslinkable resins such as allylic resin improve cementability.
When making capacitor element, across membrane coil such as electrolytic papers after anode foils and Cathode Foil, only using, winding stops the wound capacitor element, as insulating tape, the same use should be ended winding, utilization ends the machinery that winding is used, and is wound in capacitor element, and this considers it is preferred from operability aspect and part number of packages aspect.In addition, stop to reel when ending winding, can derive and surround lead wire in the lead wire side.
Below, with reference to accompanying drawing execution mode of the present utility model is illustrated.
Fig. 1 represents the profile of aluminium electrolytic capacitor of the present utility model.
Aluminium electrolytic capacitor of the present utility model is the same with common aluminium electrolytic capacitor, the electrode foil severing is proper width after, connect lead wire 1, reel with barrier films such as paper, by ending the periphery central portion of winding 2 coiling fixed capacitor elements 3.Then, be provided with once more and end winding 2, simultaneously, insulating tape 4 is wound on the end face at least of lead wire 1 side of capacitor element 3.At this moment, stretch out from the end of capacitor element 3 with the mode of surrounding lead wire 1, the mode that preferably is connected the inner face of hush panel 5 as far as possible and reel with the derivation top of insulating tape 4.
Fig. 2 represents the stereogram of the capacitor element of aluminium electrolytic capacitor of the present utility model.
Fig. 2 (a) expression insulating tape 4 and end the situation that winding 2 separates, Fig. 2 (b) expression insulating tape 4 and end winding 2 incorporate situations.Any situation is all in lead wire 1 side, and the mode of surrounding lead wire 1 with insulating tape 4 is stretched out from its end and reeled along the outer peripheral edges of capacitor element main body.
Based on embodiment the utility model is illustrated below.Need to prove that embodiment describes the situation of the electrolytic capacitor of making rated voltage 400V, 5600 μ F.
At first, anode foils is made by the aluminium foil of handling thickness 100 μ m.That is, this aluminium foil is thought 0.7 μ F/cm by the direct current etching method
2The mode asperitiesization.In pure water, boil after the asperitiesization.The formation voltage that applies 600V after boiling in the chemical solution of boric acid changes into, and forms to change into film.After changing into processing, stable for making it, carry out phosphoric acid and handle, then, be cut into width 120mm, length 8000mm size, as anode foils.
In addition, anode uses with lead wire and does not change into the thickness 150 μ m of processing, the aluminium foil of width 10mm, length 160mm.Then, this anode is connected every 4 of 2000mm cold weldings on anode foils with the long part of the 100mm of lead wire.
Cathode Foil is immersed in the aluminium foil of thickness 60 μ m carries out electrolytic etching to its surface in the aqueous solution that the mixed acid of hydrochloric acid and sulfuric acid forms and handles, and the etch-hole of average diameter 0.8 μ m is set, and thinks 200 μ F/cm
2Mode carry out asperitiesization, carry out phosphoric acid then and handle.Phosphoric acid is cut into width 120mm, length 8300mm size after handling.
Negative electrode is made by aluminium foil being rolled into length 150 μ m, width 1000mm and anneal, be cut into the width of 500mm then and then being cut into the 10mm size with lead wire.Then, this negative electrode is connected every 4 of 2000mm cold weldings on Cathode Foil with lead wire.
As electrolytic paper, used thickness 60 μ m, width 130mm, density 0.6g/m
3Manila paper and thickness 30 μ m, width 130mm, density 0.75g/m
3Brown paper.
Then, stacked and coiling anode foils and Cathode Foil across this electrolytic paper are that the winding that ends as the butyl rubber of adhesive material of acrylic resin, the thickness 25 μ m of thickness 25 μ m is reeled fixingly with resin material, form capacitor element.Then, use same only winding, stretch out 15mm and coiling by the end of capacitor element at the end face of the lead wire side of capacitor element.Then, be immersed in the organic acid electrolyte.
Behind the dipping electrolyte, will be connected with anode terminal and the cathode terminal that lead wire is provided with running through hush panel respectively with lead wire and negative electrode by the anode that capacitor element is drawn.
After the connection, capacitor element is accommodated in the aluminium shell.After taking in, hush panel is installed in the end of shell, sealed aluminum shell.Behind the sealed aluminum shell, be placed on the voltage that applies 425V in the atmosphere of 85 ℃ of temperature and carry out etch processes.After the etch processes, with insulating properties pipe metallized aluminum shell.
Except that will end winding and insulating tape integrated and be wound on the capacitor element, similarly to Example 1 the operation make.
Claims (2)
1. aluminium electrolytic capacitor, it will be accommodated in the metal shell that has hush panel around the capacitor element that anode foils and Cathode Foil form across membrane coil, and described anode foils is connected with an end of lead wire with described Cathode Foil and this lead wire is derived from described hush panel side, the other end of described lead wire is connected with outside terminal on being arranged on described hush panel, it is characterized in that, with the mode of the described lead wire that surround to derive periphery, insulating tape is sticked on the end at least of described capacitor element along described capacitor element.
2. aluminium electrolytic capacitor, it will be across membrane coil around anode foils and Cathode Foil and reel fixedly by insulating tape that the capacitor element of periphery is accommodated in the metal shell that has hush panel, and described anode foils is connected with an end of lead wire with described Cathode Foil and this lead wire is derived from described hush panel side, the other end of described lead wire is connected with outside terminal on being arranged on described hush panel, it is characterized in that, described insulating tape is derived to described lead wire side in the mode of surrounding this lead wire, and paste along the periphery of described capacitor element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010204996A JP2012064601A (en) | 2010-09-14 | 2010-09-14 | Aluminum electrolytic capacitor |
| JP2010-204996 | 2010-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003844U true CN202003844U (en) | 2011-10-05 |
Family
ID=44706574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120066576XU Expired - Lifetime CN202003844U (en) | 2010-09-14 | 2011-03-10 | Aluminium electrolytic capacitor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012064601A (en) |
| CN (1) | CN202003844U (en) |
Cited By (10)
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| CN104347271A (en) * | 2013-07-25 | 2015-02-11 | 日立Aic株式会社 | Film capacitor |
| CN107910183A (en) * | 2017-12-15 | 2018-04-13 | 肇庆绿宝石电子科技股份有限公司 | A kind of high-pressure aluminum electrolytic capacitor and its manufacture method of resistance to 40 DEG C of low temperature |
| CN108122677A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | The resistance to high ripple electrolytic capacitor of 20 × 35 aluminum hulls of φ |
| CN108122681A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | Resistance to 6KV lightning strokes electrolytic capacitor |
| CN108122678A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | 8.2 electrolytic capacitor with aluminium envelopes of φ |
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| CN108122676A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | 6.3 × 15 electrolytic capacitor with aluminium envelopes of Φ |
| CN108122679A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | 125 DEG C wide temperature electrolytic capacitor |
| CN108122680A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | 7.5 electrolytic capacitor with aluminium envelopes of φ |
| CN108122675A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | More than 550V voltage electrolytic capacitors |
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| CN111758141B (en) * | 2018-02-28 | 2022-07-08 | 松下知识产权经营株式会社 | Electrolytic capacitor module |
| JP2023082779A (en) * | 2021-12-03 | 2023-06-15 | 日本ケミコン株式会社 | Power storage device and manufacturing method for the same |
| WO2023190189A1 (en) * | 2022-03-30 | 2023-10-05 | 日本ケミコン株式会社 | Winding electrolytic capacitor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5722235U (en) * | 1980-07-11 | 1982-02-04 | ||
| JPS6073227U (en) * | 1983-10-26 | 1985-05-23 | マルコン電子株式会社 | Electrolytic capacitor |
| JPS6242231U (en) * | 1985-08-30 | 1987-03-13 | ||
| JP4895721B2 (en) * | 2006-08-22 | 2012-03-14 | 日立エーアイシー株式会社 | Aluminum electrolytic capacitor |
| JP2009212444A (en) * | 2008-03-06 | 2009-09-17 | Hitachi Aic Inc | Aluminum electrolytic capacitor |
| JP5279548B2 (en) * | 2009-02-26 | 2013-09-04 | 日立エーアイシー株式会社 | Capacitor with screw terminal and manufacturing method thereof |
-
2010
- 2010-09-14 JP JP2010204996A patent/JP2012064601A/en active Pending
-
2011
- 2011-03-10 CN CN201120066576XU patent/CN202003844U/en not_active Expired - Lifetime
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| CN104347271A (en) * | 2013-07-25 | 2015-02-11 | 日立Aic株式会社 | Film capacitor |
| CN104347271B (en) * | 2013-07-25 | 2018-04-06 | 日立Aic株式会社 | Thin film capacitor |
| CN108122677A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | The resistance to high ripple electrolytic capacitor of 20 × 35 aluminum hulls of φ |
| CN108122681A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | Resistance to 6KV lightning strokes electrolytic capacitor |
| CN108122678A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | 8.2 electrolytic capacitor with aluminium envelopes of φ |
| CN108122674A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | Φ 16 × 36 plus insulation spacer electrolytic capacitor |
| CN108122676A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | 6.3 × 15 electrolytic capacitor with aluminium envelopes of Φ |
| CN108122679A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | 125 DEG C wide temperature electrolytic capacitor |
| CN108122680A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | 7.5 electrolytic capacitor with aluminium envelopes of φ |
| CN108122675A (en) * | 2016-11-29 | 2018-06-05 | 无锡泰威电子有限公司 | More than 550V voltage electrolytic capacitors |
| CN107910183A (en) * | 2017-12-15 | 2018-04-13 | 肇庆绿宝石电子科技股份有限公司 | A kind of high-pressure aluminum electrolytic capacitor and its manufacture method of resistance to 40 DEG C of low temperature |
| CN107910183B (en) * | 2017-12-15 | 2019-09-20 | 肇庆绿宝石电子科技股份有限公司 | A kind of high-pressure aluminum electrolytic capacitor and its manufacturing method of resistance to -40 DEG C of low temperature |
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| Publication number | Publication date |
|---|---|
| JP2012064601A (en) | 2012-03-29 |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |
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| CX01 | Expiry of patent term |