CN102074354B - Stack capacitor with multi-end anode pins - Google Patents
Stack capacitor with multi-end anode pins Download PDFInfo
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- CN102074354B CN102074354B CN200910223253.4A CN200910223253A CN102074354B CN 102074354 B CN102074354 B CN 102074354B CN 200910223253 A CN200910223253 A CN 200910223253A CN 102074354 B CN102074354 B CN 102074354B
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Abstract
The invention discloses a stack capacitor with multi-end anode pins. The stack capacitor comprises a plurality of capacitor units, a substrate unit and a packaging unit. The anode of each capacitor unit is provided with an outwards led anode pin, wherein the anode pins are divided into a plurality of groups of anode pin units; the anode pin units are horizontally separated from one another relative to the substrate; and the anode pins of each group of anode pin units are electrically stacked together. The cathode of each capacitor unit is provided with an outwards led cathode pin, wherein the cathode pins are divided into a plurality of groups of cathode pin units; the cathode pin units are separated from one another; and the cathode pins of each group of cathode pin units are electrically stacked together. The pins are led out in the same direction at a plurality of ends and welding at the same polar on the same side in a plurality of areas is adopted, so the welding difficulty can be reduced and the equivalent series resistance of the capacitor with the same capacity is greatly reduced.
Description
Technical field
The present invention relates to a kind of solid electrolytic capacitor, espespecially a kind of stack capacitor with the anodal leading foot of multiterminal.
Background technology
Capacitor be used in widely consumer electrical home appliances, computer main frame panel and periphery thereof, power supply unit, communication product and automobile etc. basic module, its main effect comprises: filtering, bypass, rectification, coupling, decoupling, phase inversion etc. are one of indispensable assemblies in electronic product.Capacitor, according to different materials and purposes, has different kenels, comprises aluminium matter electrochemical capacitor, tantalum matter electrochemical capacitor, laminated ceramic electric capacity, thin-film capacitor etc.
In prior art, for the aluminium foil of aluminium electrolytic capacitor, conventionally divide into positive paper tinsel and negative paper tinsel, the step that must change into through burn into just can be for electrochemical capacitor.Corrosion refers to and highly purified aluminium is utilized in galvanic corrosion liquid to a series of processing procedures such as galvanic corrosion, pickling, dechlorination, washing, to increase the surface area of aluminium foil, just carried widely high specific capacitance.Than the raising of electric capacity, it is the important technology that electrochemical capacitor is realized miniaturization.Aluminium foil (positive paper tinsel) processing through changing into again after excessive erosion, to form aluminium oxide on aluminium foil, as the dielectric of electrochemical capacitor.The withstand voltage linear relationship that is generally a direct ratio of dielectric thickness and aluminium foil, this is also the Main Basis of electrochemical capacitor operating voltage.As for negative paper tinsel, conventionally in its surface, form the proof voltage layer of one 1～3V, also have and do not make the negative paper tinsel that changes into processing, if but the etched foil that does not do pressure-resistant treatments is placed in to air, also can self-assembling formation aluminium oxide.The aluminium foil changing into through burn into, cuts into certain width according to the specification of design, then by guide pin nail joint on aluminium foil, then separate with electrolytic paper; Through nail joint, coiling processing procedure, form a cylindrical structure, it is called fuse or sub-prime.Now, fuse does not have the electrical characteristic of electrochemical capacitor, must via by electrolyte complete wetting in fuse, by the water absorbing capacity of electrolytic paper, by electrolyte absorption wherein and infiltrate through in the corrosion structure of aluminium foil.The fuse of this complete wetting is packed in bottom and had in the column shape container of Explosion-proof Design, in the seal of the openend device rubber of column shape container, by machinery sealing and envelope waist, form an airtight column structure, then via sleeve pipe, aging etc. being made of charging.
In fact, at the negative pole of electrolytic capacitor, be to form an electronic loop by the movement of electrolyte intermediate ion, therefore the conductivity of electrolyte just directly affects the electrical characteristic of electrolytic capacitor.Therefore how improving the conductivity of electrolyte, so that electrolytic capacitor, in high temperature, still can keep the stability of the chemical stability of electrolyte and aluminium foil, electrolytic paper, particularly electrolyte and aluminium foil, is the trend of electrolyte development.The electrolyte that the aluminium electrolytic capacitor of mentioning in general document uses, is particularly used in below operating voltage 100V, is mainly to be formed according to different proportion allotment by water, organic solvent, organic acid, inorganic acid and some special additives.
Moreover solid electrolytic capacitor has the advantages such as small size, high capacitance, frequency characteristic be superior, and the decoupling zero cooperation that can be used in the power circuit of central processing unit is used.Generally speaking, can utilize the storehouse of multiple capacitor cells, and the solid electrolytic capacitor of formation high-capacitance, known stack-type solid electrolytic capacitor comprises multiple capacitor cells and lead frame, wherein each capacitor cell comprises anode portion, negative pole part and insulation division, and this insulation division is electrically insulated anode portion and negative pole part each other.Particularly, the negative pole part of capacitor cell storehouse each other, and by between adjacent capacitor cell, conductor layer being set, so that be electrically connected to each other between multiple capacitor cell.
In addition, convoluted solid electrolytic capacitor includes: capacitor assembly, accommodate member and closure member.This capacitor assembly is wound with the anode foils and the Cathode Foil that is connected cathode terminal of jointed anode terminal across separator, and forms dielectric substrate between anode foils and Cathode Foil; This is accommodated member and has peristome and can accommodate capacitor assembly; This closure member has the through hole that can supply anode terminal and cathode terminal to run through, and salable peristome of accommodating member.And, between aforementioned closure member and aforementioned capacitor assembly, have predetermined space, and in anode terminal and cathode terminal, at least any one is provided with to guarantee the barrier structure in gap.
But, the space that inventor's thoughts known technology is still improved, and according to being engaged in for many years correlation experience in this respect, concentrated observation and research, and coordinate knowwhy, thus propose a kind of reasonable in design and effectively improve the technical scheme of known technology defect.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of stack capacitor with the anodal leading foot of multiterminal, and its main purpose is:
1, can reach large area, large capacity, the low back of the body, there is cheaply the stack capacitor of the anodal leading foot of multiterminal.
2, can significantly lower leakage current and short circuit problem.
3, can reduce welding degree of difficulty, and significantly reduce the equivalent series resistance of same capability capacitor.
In order to overcome the defect of prior art and to reach above-mentioned technique effect, technical scheme provided by the invention is:
The stack capacitor with the anodal leading foot of multiterminal, comprises a plurality of capacitor cells, a base board unit and an encapsulation unit; Described in each, capacitor cell just has an anodal pin of outwards drawing, and described anodal pin is distinguished into the anodal pin units of plural groups, described anodal pin units is horizontally separated each other with respect to substrate, and storehouse is together electrically for each anodal pin of organizing anodal pin units; Storehouse is together electrically for the negative pole of each capacitor cell; Described base board unit comprises that a positive pole that is electrically connected at described anodal pin draws the negative pole that electrically-conductive backing plate and is electrically connected at the negative pole of described capacitor cell and draw electrically-conductive backing plate; A part for capacitor cell and this base board unit described in described package unit covers.
As the further improvement to technical solution of the present invention, described in each, capacitor cell comprises: the oxide insulating layer of a valve metal paillon foil, coated this valve metal paillon foil, the conducting polymer of a side of coated this oxide insulating layer and the carbon paste of coated this conducting polymer, wherein said carbon paste is stack up repeatedly by elargol or silver paste and electrically, and described anodal pin is to be electrically connected by a plurality of pads.
Moreover the edge of valve metal paillon foil optionally installs colloid additional described in each.
The described stack capacitor with the anodal leading foot of multiterminal also comprises: on a plurality of part outer surfaces that are arranged at respectively described valve metal paillon foil, and surround into the insulating barrier of a circle, that is each insulating barrier be with around mode be formed in upper and lower surface and two limits, opposition side of the part outer surface of each corresponding valve metal paillon foil, to limit the length of this carbon paste and this conducting polymer, and as the positive pole of each capacitor cell and the insulated wire of negative pole.
Described anodal pin is outwards drawn from the same direction of described positive pole respectively.
As the another kind to technical solution of the present invention, improve, described in each, capacitor cell comprises: the oxide insulating layer of a valve metal paillon foil, coated this valve metal paillon foil, the conducting polymer of a side of coated this oxide insulating layer and the carbon paste of coated this conducting polymer, directly stack up repeatedly electrically of wherein said carbon paste, and described anodal pin is to be electrically connected by a plurality of pads.
Described in each, the edge of valve metal paillon foil optionally installs colloid additional.
The described stack capacitor with the anodal leading foot of multiterminal also comprises: on a plurality of part outer surfaces that are arranged at respectively described valve metal paillon foil, and surround into the insulating barrier of a circle, that is each insulating barrier be with around mode be formed in upper and lower surface and two limits, opposition side of the part outer surface of each corresponding valve metal paillon foil, to limit the length of this carbon paste and this conducting polymer, and as the positive pole of each capacitor cell and the insulated wire of negative pole.
Described anodal pin is outwards drawn from the same direction of described positive pole respectively.
Beneficial effect of the present invention is: utilize the equidirectional derivation of multiterminal, and use homopolarity with the welding of limit multi-region, can reduce welding degree of difficulty, and significantly reduce the equivalent series resistance of same capability capacitor.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Figure 1A is the side-looking generalized section of capacitor cell of the present invention;
Figure 1B is the schematic top plan view that the edge of valve metal paillon foil of the present invention installs colloid additional;
Fig. 1 C is the generalized section of the 1C-1C line of Figure 1B;
Fig. 1 D is the schematic diagram of the positive pole heap stack mode of the present invention embodiment 1 with the stack capacitor of the anodal leading foot of multiterminal;
Fig. 1 E is the side-looking generalized section of the heap stack mode of the embodiment of the present invention 1;
Fig. 2 is the schematic diagram of the positive pole heap stack mode of the present invention embodiment 2 with the stack capacitor of the anodal leading foot of multiterminal;
Fig. 3 is the side-looking generalized section of the heap stack mode of the embodiment of the present invention 2;
In figure, mark is illustrated as, capacitor cell 1, valve metal paillon foil 10, anodal pin 100, anodal pin units 100 ', oxide insulating layer 11, conducting polymer 12, carbon paste 13, insulating barrier 14, base board unit 2, positive pole is drawn electrically-conductive backing plate 21, and negative pole is drawn electrically-conductive backing plate 22, encapsulation unit 3, colloid C, pad P, conductive layer S1, S2, S3.
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 for description and interpretation the present invention, is not intended to limit the present invention.
Embodiment 1:
As shown in Figure 1A-Fig. 1 E, a kind of stack capacitor with the anodal leading foot of multiterminal, it comprises: a plurality of capacitor cells 1, a base board unit 2 and an encapsulation unit 3.
Wherein, as shown in Figure 1A-Fig. 1 C, each capacitor cell 1 comprises the oxide insulating layer 11 of a valve metal paillon foil 10, coated this valve metal paillon foil 10, the conducting polymer 12 of a side and the carbon paste 13 of coated this conducting polymer 12 of coated this oxide insulating layer 11.In addition, on the part outer surface of the valve metal paillon foil 10 of each capacitor cell 1, there is the insulating barrier 14 that surrounds into a circle, that is each insulating barrier 14 be with around mode be formed in upper and lower surface and two limits, opposition side of the part outer surface of each corresponding valve metal paillon foil 10, to limit the length of this carbon paste 13 and this conducting polymer 12, and as the positive pole of each capacitor cell 1 and the insulated wire of negative pole.Moreover the edge of each valve metal paillon foil 10 optionally installs colloid C additional.
Moreover, as shown in Fig. 1 D and Fig. 1 E, each capacitor cell 1 just have an anodal pin 100 of outwards drawing, and described anodal pin 100 be distinguished into the anodal pin units 100 of plural groups ', described anodal pin units 100 ' horizontally separated each other with respect to substrate, each organize anodal pin units 100 ' by a plurality of pad P and electrically storehouse (as shown in Fig. 1 E) together of anodal pin 100.In other words, the valve metal paillon foil 10 of each capacitor cell 1 has an anodal pin 100 of outwards drawing, and described anodal pin 100 is distinguished into respectively anodal pin units 100 together of storehouse ' (two groups of anodal pin units 100 ') as shown in Fig. 1 D electrically of plural groups, and wherein said anodal pin 100 is outwards drawn from the same direction of described valve metal paillon foil 10 respectively.Fig. 1 D shows, if want 8 layers, storehouse, only need carry out the welding of 4 layers.
In addition, between every two capacitor cells 1, be coated with conductive layer S1, for example: elargol or silver paste, storehouse is together electrically with the negative pole that makes each capacitor cell 1.In other words, described carbon paste 13 passes through described conductive layer S1 and changes electrically stack up.In addition, the top of described capacitor cell 1 and outside are coated with one deck conductive layer S2, for example: elargol or silver paste.
In addition, this base board unit 2 comprises that a positive pole that is electrically connected at described anodal pin 100 draws the negative pole that electrically-conductive backing plate 21 and is electrically connected at the negative pole of described capacitor cell 1 and draw electrically-conductive backing plate 22.Moreover, a part for the coated described capacitor cell 1 of this encapsulation unit 3 and this base board unit 2.
Embodiment 2:
As shown in Figure 2, the stack capacitor that the present invention has an anodal leading foot of multiterminal also can use three groups of anodal pin units 100 ', wherein the valve metal paillon foil 10 of each capacitor cell 1 has an anodal pin 100 of outwards drawing, and described anodal pin 100 be distinguished into plural groups respectively electrically anodal pin units 100 together of storehouse ', wherein said anodal pin 100 is outwards drawn from the same direction of described valve metal paillon foil 10 respectively.Fig. 2 demonstrates, if want 12 layers, storehouse, only need carry out the welding of 4 layers.In addition, this base board unit 2 comprises that a positive pole that is electrically connected at described anodal pin 100 draws the negative pole that electrically-conductive backing plate 21 and is electrically connected at the negative pole of described capacitor cell 1 and draw electrically-conductive backing plate 22.
Embodiment 3:
As shown in Figure 3, the stack capacitor that the present invention has the anodal leading foot of multiterminal also can carry out double-deck storehouse, and can, according to the raising requirement of series resistance, save as the use of the conductive layer S1 of Fig. 1 E.In other words, described carbon paste 13 can be directly stack up repeatedly electrically, for example, and the top of described upper strata capacitor cell 1 and outside are coated with one deck conductive layer S2 (: elargol or silver paste), described lower floor capacitor cell 1 bottom and outside be coated with one deck conductive layer S3.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. the stack capacitor with the anodal leading foot of multiterminal, is characterized in that: described in there is the anodal leading foot of multiterminal stack capacitor comprise a plurality of capacitor cells, a base board unit and an encapsulation unit;
Described in each, capacitor cell just has an anodal pin of outwards drawing, and described anodal pin is distinguished into the anodal pin units of plural groups, described anodal pin units is horizontally separated each other with respect to substrate, and storehouse is together electrically for each anodal pin of organizing anodal pin units; Storehouse is together electrically for the negative pole of each capacitor cell;
Described base board unit comprises that a positive pole that is electrically connected at described anodal pin draws the negative pole that electrically-conductive backing plate and is electrically connected at the negative pole of described capacitor cell and draw electrically-conductive backing plate;
A part for capacitor cell and this base board unit described in described package unit covers.
2. the stack capacitor with the anodal leading foot of multiterminal according to claim 1, it is characterized in that: described in each, capacitor cell comprises: the oxide insulating layer of a valve metal paillon foil, coated this valve metal paillon foil, the conducting polymer of a side of coated this oxide insulating layer and the carbon paste of coated this conducting polymer, wherein said carbon paste is stack up repeatedly by elargol or silver paste and electrically, and described anodal pin is to be electrically connected by a plurality of pads.
3. the stack capacitor with the anodal leading foot of multiterminal according to claim 2, is characterized in that: described in each, the edge of valve metal paillon foil optionally installs colloid additional.
4. the stack capacitor with the anodal leading foot of multiterminal according to claim 2, it is characterized in that: described in there is the anodal leading foot of multiterminal stack capacitor also comprise: on a plurality of part outer surfaces that are arranged at respectively described valve metal paillon foil, and surround into the insulating barrier of a circle, that is each insulating barrier be with around mode be formed in upper and lower surface and two limits, opposition side of the part outer surface of each corresponding valve metal paillon foil, to limit the length of this carbon paste and this conducting polymer, and as the positive pole of each capacitor cell and the insulated wire of negative pole.
5. the stack capacitor with the anodal leading foot of multiterminal according to claim 2, is characterized in that: described anodal pin is outwards drawn from the same direction of described positive pole respectively.
6. the stack capacitor with the anodal leading foot of multiterminal according to claim 1, it is characterized in that: described in each, capacitor cell comprises: the oxide insulating layer of a valve metal paillon foil, coated this valve metal paillon foil, the conducting polymer of a side of coated this oxide insulating layer and the carbon paste of coated this conducting polymer, directly stack up repeatedly electrically of wherein said carbon paste, and described anodal pin is to be electrically connected by a plurality of pads.
7. the stack capacitor with the anodal leading foot of multiterminal according to claim 6, is characterized in that: described in each, the edge of valve metal paillon foil optionally installs colloid additional.
8. the stack capacitor with the anodal leading foot of multiterminal according to claim 6, it is characterized in that: described in there is the anodal leading foot of multiterminal stack capacitor also comprise: on a plurality of part outer surfaces that are arranged at respectively described valve metal paillon foil, and surround into the insulating barrier of a circle, that is each insulating barrier be with around mode be formed in upper and lower surface and two limits, opposition side of the part outer surface of each corresponding valve metal paillon foil, to limit the length of this carbon paste and this conducting polymer, and as the positive pole of each capacitor cell and the insulated wire of negative pole.
9. the stack capacitor with the anodal leading foot of multiterminal according to claim 6, is characterized in that: described anodal pin is outwards drawn from the same direction of described positive pole respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910223253.4A CN102074354B (en) | 2009-11-20 | 2009-11-20 | Stack capacitor with multi-end anode pins |
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| CN200910223253.4A CN102074354B (en) | 2009-11-20 | 2009-11-20 | Stack capacitor with multi-end anode pins |
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| CN102074354A CN102074354A (en) | 2011-05-25 |
| CN102074354B true CN102074354B (en) | 2014-04-23 |
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| DE202013008747U1 (en) * | 2013-10-01 | 2013-10-23 | Abb Technology Ag | Energy supply device for explosion-proof electronic functional units |
| CN109360702A (en) * | 2018-11-30 | 2019-02-19 | 铜陵市三盛电子有限公司 | One kind easily adjusting more capacitance value capacitors |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101009160A (en) * | 2006-01-23 | 2007-08-01 | 富士通媒体部品株式会社 | Laminated solid electrolytic condenser |
| CN101176172A (en) * | 2005-05-13 | 2008-05-07 | 三洋电机株式会社 | Stacked type solid electrolytic capacitor and method for manufacturing same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176172A (en) * | 2005-05-13 | 2008-05-07 | 三洋电机株式会社 | Stacked type solid electrolytic capacitor and method for manufacturing same |
| CN101009160A (en) * | 2006-01-23 | 2007-08-01 | 富士通媒体部品株式会社 | Laminated solid electrolytic condenser |
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