CN102074354A - Stack capacitor with multi-end anode pins - Google Patents
Stack capacitor with multi-end anode pins Download PDFInfo
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- CN102074354A CN102074354A CN 200910223253 CN200910223253A CN102074354A CN 102074354 A CN102074354 A CN 102074354A CN 200910223253 CN200910223253 CN 200910223253 CN 200910223253 A CN200910223253 A CN 200910223253A CN 102074354 A CN102074354 A CN 102074354A
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- multiterminal
- leading foot
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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 separated from one another; 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, refer to a kind of stack capacitor especially 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 significant feature comprises: filtering, bypass, rectification, coupling, decoupling, phase inversion etc. are one of indispensable assemblies in the electronic product.Capacitor has different kenels according to different materials and purposes, comprises aluminium matter electrochemical capacitor, tantalum matter electrochemical capacitor, laminated ceramic electric capacity, thin-film capacitor etc.
In the prior art, the aluminium foil that is used for aluminium electrolytic capacitor is divided into positive paper tinsel and negative paper tinsel usually, must just can be used for electrochemical capacitor through the step that burn into changes into.Corrosion is meant highly purified aluminium is utilized a series of processing procedures such as galvanic corrosion, pickling, dechlorination, washing in galvanic corrosion liquid, to increase the surface area of aluminium foil, is just improved widely and compares electric capacity.Raising than electric capacity is the important technology that electrochemical capacitor is realized miniaturization.Aluminium foil after excessive erosion (positive paper tinsel) processing through changing into again is 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 also is the main foundation of electrochemical capacitor operating voltage.As for negative paper tinsel, usually form the proof voltage layer of one 1～3V in its surface, also have and do not make the negative paper tinsel that changes into processing, if but the etched foil that will not do pressure-resistant treatments places air, also can form aluminium oxide naturally.The aluminium foil that changes into through burn into cuts into certain width according to the specification of design, again with the guide pin nail joint on aluminium foil, separate with electrolytic paper again; Form a cylindrical structure through nail joint, coiling processing procedure, it is called fuse or sub-prime.At this moment, fuse does not have the electrical characteristic of electrochemical capacitor, must be via electrolyte be infiltrated on fuse fully, and by the water absorbing capacity of electrolytic paper, wherein and infiltrate through in the corrosion structure of aluminium foil with electrolyte absorption.This fuse that soaks into fully packed into to be had in the column shape container of explosion-proof design in the bottom, and the seal in the openend device rubber of column shape container seals and seal waist by machinery, forms an airtight column structure, is made via sleeve pipe, charging are aging etc. again.
In fact, be to form an electronic loop at the negative pole of electrolytic capacitor, so the conductivity of electrolyte just directly influence the electrical characteristic of electrolytic capacitor by moving of electrolyte intermediate ion.Therefore how improving the conductivity of electrolyte, so that electrolytic capacitor in high temperature, still can keep the chemical stability, particularly electrolyte of electrolyte and aluminium foil, electrolytic paper and the stability of aluminium foil, is the trend of electrolyte development.The electrolyte that the aluminium electrolytic capacitor of mentioning in the general document uses particularly is used in below the operating voltage 100V, mainly is to be formed according to the different proportion allotment by water, organic solvent, organic acid, inorganic acid and some special additives.
Moreover solid electrolytic capacitor has advantages such as small size, high capacitance, frequency characteristic be superior, and the de that can be used in the power circuit of central processing unit is used.Generally speaking, can utilize the storehouse of a plurality of capacitor cells, and the solid electrolytic capacitor of formation high-capacitance, known stacking-type solid electrolytic capacitor comprises a plurality of 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 is storehouse each other, and by between adjacent capacitor cell, conductor layer being set, so that be electrically connected to each other between a plurality of 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 that connects 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, have predetermined space between aforementioned closure member and the aforementioned capacitor assembly, and any one is provided with in order to guarantee the barrier structure in gap at least in anode terminal and the cathode terminal.
Yet inventor's thoughts known technology still has the space of improvement, and according to the correlation experience of being engaged in for many years in this respect, the concentrated observation and research, and cooperate knowwhy, thus propose a kind of reasonable in design and effectively improve the technical scheme of known technology defective.
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 tracts of land, big capacity, the low back of the bodyization, have a stack capacitor of multiterminal positive pole leading foot cheaply.
2, can significantly lower leakage current and short circuit problem.
3, can reduce the welding degree of difficulty, and significantly reduce the equivalent series resistance of same capability capacitor.
For the defective that overcomes prior art and reach above-mentioned technique effect, technical scheme provided by the invention is:
Have the stack capacitor of the anodal leading foot of multiterminal, comprise a plurality of capacitor cells, a base board unit and an encapsulation unit; Each described capacitor cell just have 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 separated from each other, 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; The part of the described capacitor cell of described package unit covers and this base board unit.
As further improvement to technical solution of the present invention, each described capacitor cell comprises: the oxide insulating layer, of a valve metal paillon foil, this valve metal paillon foil of coating coats the conducting polymer of a side of this oxide insulating layer, reaches the carbon paste of this conducting polymer of coating, wherein said carbon paste is to see through elargol or silver paste and stack up repeatedly electrically, and described anodal pin is to be electrically connected by a plurality of pads.
Moreover the edge of each described valve metal paillon foil optionally installs colloid additional.
Described stack capacitor with the anodal leading foot of multiterminal also comprises: on a plurality of part outer surfaces that are arranged at described valve metal paillon foil respectively, and surround into the insulating barrier of a circle.
Described anodal pin is outwards drawn from the same direction of described positive pole respectively.
Improve as another kind technical solution of the present invention, each described capacitor cell comprises: the oxide insulating layer, of a valve metal paillon foil, this valve metal paillon foil of coating coats the conducting polymer of a side of this oxide insulating layer, reaches the carbon paste of this conducting polymer of coating, wherein said carbon paste is stack up repeatedly electrically directly, and described anodal pin is to be electrically connected by a plurality of pads.
The edge of each described valve metal paillon foil optionally installs colloid additional.
Described stack capacitor with the anodal leading foot of multiterminal also comprises: on a plurality of part outer surfaces that are arranged at described valve metal paillon foil respectively, and surround into the insulating barrier of a circle.
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 the welding degree of difficulty, and significantly reduce the equivalent series resistance of same capability capacitor.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the 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 anodal storehouse mode of the embodiment 1 of the stack capacitor of the present invention with the anodal leading foot of multiterminal;
Fig. 1 E is the side-looking generalized section of the storehouse mode of the embodiment of the invention 1;
Fig. 2 is the schematic diagram of anodal storehouse mode of the embodiment 2 of the stack capacitor of the present invention with the anodal leading foot of multiterminal;
Fig. 3 is the side-looking generalized section of the storehouse mode of the embodiment of the invention 2;
Mark is illustrated as among the figure, 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 are 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 is used for description and interpretation the present invention, and be not used in qualification the present invention.
Embodiment 1:
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, shown in Figure 1A-Fig. 1 C, each capacitor cell 1 comprises that oxide insulating layer 11, that a valve metal paillon foil 10, coats this valve metal paillon foil 10 coats the conducting polymer 12 of a side of this oxide insulating layer 11, an and carbon paste 13 that coats this conducting polymer 12.In addition, has the insulating barrier 14 (that is each insulating barrier 14 is upper and lower surface and the two opposition side limits that are formed in the part outer surface of each corresponding valve metal paillon foil 10 in the mode that centers on) that surrounds into a circle on the part outer surface of the valve metal paillon foil 10 of each capacitor cell 1, limiting 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, 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 ' be separated from each other, each organize anodal pin units 100 ' anodal pin 100 storehouse (shown in Fig. 1 E) together by a plurality of pad P and electrically.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 plural groups difference storehouse anodal pin units 100 ' (two groups of anodal pin units 100 shown in Fig. 1 D ') together electrically, 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 in storehouse, only need carry out 4 layers welding.
In addition, be coated with conductive layer S1 between per two capacitor cells 1, for example: elargol or silver paste so that the negative pole of each capacitor cell 1 storehouse is together electrically.In other words, described carbon paste 13 passes through described conductive layer S1 and changes stack up electrically.In addition, the top of described capacitor cell 1 and the 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 this encapsulation unit 3 coats the part of described capacitor cell 1 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 together anodal pin units 100 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 in storehouse, only need carry out 4 layers welding.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 save the use as the conductive layer S1 of Fig. 1 E according to the raising requirement of series resistance.In other words, described carbon paste 13 can be directly stack up repeatedly electrically, and the top of described upper strata capacitor cell 1 and the outside are coated with one deck conductive layer S2 (for example: elargol or silver paste), and the outside that reaches bottom of described lower floor capacitor cell 1 is coated with one deck conductive layer S3.
It should be noted that at last: the above only is 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, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, 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. have the stack capacitor of the anodal leading foot of multiterminal, it is characterized in that: described stack capacitor with the anodal leading foot of multiterminal comprises a plurality of capacitor cells, a base board unit and an encapsulation unit;
Each described capacitor cell just have 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 separated from each other, 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;
The part of the described capacitor cell of described package unit covers and this base board unit.
2. the stack capacitor with the anodal leading foot of multiterminal according to claim 1, it is characterized in that: each described capacitor cell comprises: the oxide insulating layer, of a valve metal paillon foil, this valve metal paillon foil of coating coats the conducting polymer of a side of this oxide insulating layer, reaches the carbon paste of this conducting polymer of coating, wherein said carbon paste is to see through elargol or silver paste and stack up repeatedly 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, it is characterized in that: the edge of each described 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 stack capacitor with the anodal leading foot of multiterminal also comprises: on a plurality of part outer surfaces that are arranged at described valve metal paillon foil respectively, and surround into the insulating barrier of a circle.
5. the stack capacitor with the anodal leading foot of multiterminal according to claim 2, it 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: each described capacitor cell comprises: the oxide insulating layer, of a valve metal paillon foil, this valve metal paillon foil of coating coats the conducting polymer of a side of this oxide insulating layer, reaches the carbon paste of this conducting polymer of coating, wherein said carbon paste is stack up repeatedly electrically directly, 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, it is characterized in that: the edge of each described 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 stack capacitor with the anodal leading foot of multiterminal also comprises: on a plurality of part outer surfaces that are arranged at described valve metal paillon foil respectively, and surround into the insulating barrier of a circle.
9. the stack capacitor with the anodal leading foot of multiterminal according to claim 6, it is characterized in that: described anodal pin is outwards drawn from the same direction of described positive pole respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223253.4A CN102074354B (en) | 2009-11-20 | 2009-11-20 | Stack capacitor with multi-end anode pins |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223253.4A CN102074354B (en) | 2009-11-20 | 2009-11-20 | Stack capacitor with multi-end anode pins |
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| Publication Number | Publication Date |
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| CN102074354A true CN102074354A (en) | 2011-05-25 |
| CN102074354B CN102074354B (en) | 2014-04-23 |
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| CN200910223253.4A Active CN102074354B (en) | 2009-11-20 | 2009-11-20 | Stack capacitor with multi-end anode pins |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518523A (en) * | 2013-10-01 | 2015-04-15 | Abb技术股份公司 | 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4688875B2 (en) * | 2005-05-13 | 2011-05-25 | 三洋電機株式会社 | Multilayer solid electrolytic capacitor and manufacturing method thereof |
| JP2007200950A (en) * | 2006-01-23 | 2007-08-09 | Fujitsu Media Device Kk | Multilayer solid-state electrolytic capacitor |
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2009
- 2009-11-20 CN CN200910223253.4A patent/CN102074354B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518523A (en) * | 2013-10-01 | 2015-04-15 | Abb技术股份公司 | Energy supply device for explosion-proof electronic functional units |
| CN104518523B (en) * | 2013-10-01 | 2018-08-17 | Abb瑞士股份有限公司 | Power supply for explosion-proof electronic functional unit |
| 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 |
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| Publication number | Publication date |
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| CN102074354B (en) | 2014-04-23 |
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