CN102064025B - Protective device for solid electrolytic capacitor body - Google Patents
Protective device for solid electrolytic capacitor body Download PDFInfo
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- CN102064025B CN102064025B CN200910223305.8A CN200910223305A CN102064025B CN 102064025 B CN102064025 B CN 102064025B CN 200910223305 A CN200910223305 A CN 200910223305A CN 102064025 B CN102064025 B CN 102064025B
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Abstract
The invention discloses a protective device for a solid electrolytic capacitor body. The protective device comprises a plurality of capacitor components which are arranged on an anode terminal and a cathode terminal in a laminated mode, wherein the plurality of capacitor components, the anode terminal and the cathode terminal are packaged and fixed by packaging materials such as synthetic resin and the like; and the packaging and fixing process comprises the following steps of: coating one or more layers of insulating glue on the capacitor body consisting of the plurality of capacitor components, the anode terminal and the cathode terminal to form an airtight protective layer; and packaging the capacitor body coated with the insulating glue by using the packaging materials. The protective device for the solid electrolytic capacitor body can overcome the defects that packaging pressure is high, the capacitor body is easy to damage, a short circuit and overhigh leakage current are easy to cause, and the like in the prior art, and has the advantages that: air tightness is high, the packaging pressure is low, the capacitor body is difficult to damage, and the short circuit and the overhigh leakage current are difficult to cause.
Description
Technical field
The present invention relates to the resist technology of capacitor; particularly; the protective device that relates to a kind of solid electrolytic capacitor body, refers to a kind of encapsulating material when encapsulation pressure to capacitor body that reduces especially, avoids encapsulating the protective device of the excessive damage capacitor body of pressure.
Background technology
In the prior art, as depicted in figs. 1 and 2, solid electrolytic capacitor 10 comprises the multi-plate condenser assembly 6 that lamination arranges, in the bottom that is positioned at undermost capacitor assembly 6, anode terminal 12 and cathode terminal 13 are installed, and the lower surface of the lower surface of anode terminal 12 and cathode terminal 13 is respectively by bottom, anode terminal 12 and the cathode terminal 13 of synthetic resin 14 coated capacitor assemblies 6.
As shown in Figure 2, in above-mentioned capacitor assembly 6, metal aluminum foil 1, as anode bodies, has valve action; On the surface of metal aluminum foil 1, be formed with and be formed with successively dielectric medium oxide-film 2 and cathode layer 3; Cathode layer 3 is by solid electrolyte layer 3a, the carbon-coating 3b of the electric conductive polymer formation of polythiophene system (polythiophene) and silver coating layer 3c formation; The part of the cathode layer 3 forming on above-mentioned dielectric medium oxide-film 2 is negative pole part 8, and the part that does not form cathode layer 3 is anode portion 7; In the multi-plate condenser assembly arranging at capacitor assembly 6 laminations, between the anode portion of adjacent capacitor assembly, be welded and fixed, then fixing by conductivity solid 18 between negative pole part, thus the solid electrolytic capacitor 10 of formation lamination-type.
Near negative pole part 8 in anode terminal 12 bottom surfaces of above-mentioned anode portion 7 and the boundary 15 of anode portion 7, be provided with the 1st stress and relax the 16 and the 2nd stress that cracks and relax and crack 17; Like this, anode portion 7 can relax the 16 and the 2nd stress that cracks at the 1st stress and relax the 17 places bending of cracking.Due near the boundary 15 at anode portion 7 and negative pole part 8 or its, can suppress applying of bending stress, therefore, the stress that is applied to this part can diminish.But when the laminating resin 14 of wrapper, encapsulation pressure still easily damages the body of capacitor assembly 6, cause the excessive problem of short circuit and leakage current, therefore, how to improve in prior art and encapsulate the excessive problem of pressure, will be the urgently problem of effort of relevant industry.
Summary of the invention
The object of the invention is to, propose a kind of protective device of solid electrolytic capacitor body, to realize, air-tightness is good, encapsulation pressure is low, easy damaged capacitor body and be difficult for causing short circuit and the excessive advantage of leakage current not.
For achieving the above object, the technical solution used in the present invention is: a kind of protective device of solid electrolytic capacitor body, capacitor body comprises the multi-plate condenser assembly that anode terminal, cathode terminal and lamination arrange, described multi-plate condenser assembly lamination is arranged on anode terminal and cathode terminal, and the anode portion of capacitor assembly is all connected with described anode terminal, negative pole part is all connected with cathode terminal; Between described multi-plate condenser assembly, anode terminal and cathode terminal, be by encapsulating materials such as synthetic resin, to encapsulate fixing mode to be fixed together; The mode that is fixedly connected with between described multi-plate condenser assembly, anode terminal and cathode terminal, be specially: first, on the capacitor body being formed by multi-plate condenser assembly, anode terminal and cathode terminal, apply one or more layers of insulating cement, form airtight protective layer; Secondly, adopt described encapsulating material, the capacitor body that applies insulating cement is encapsulated to parcel.Here; effect by airtight protective layer; not only can increase the airtight effect of capacitor body; and the pressure that capacitor body bears while reducing encapsulation; avoid encapsulating pressure excessive and damage capacitor body; and cause short circuit and the problem such as leakage current is excessive, meanwhile, also improved the air-tightness problem of capacitor body.
Further, described airtight protective layer is polymer.
Further, described airtight protective layer is resin.
Further, described airtight protective layer is resin and/or polymer.
Simultaneously, another technical scheme that the present invention adopts is: a kind of protective device of solid electrolytic capacitor body, capacitor body comprises the multi-plate condenser assembly that anode terminal, cathode terminal and lamination arrange, described multi-plate condenser assembly builds up and is arranged on anode terminal and cathode terminal, and the anode portion of capacitor assembly is all connected with described anode terminal, negative pole part is all connected with cathode terminal; Between described multi-plate condenser assembly, anode terminal and cathode terminal, be by encapsulating materials such as synthetic resin, to encapsulate fixing mode to be fixed together; At the opposite side of described anode terminal and cathode terminal, parallel another group capacitor body that is provided with; The mode that is fixedly connected with between described multi-plate condenser assembly, anode terminal and cathode terminal, be specially: first, on the capacitor body being formed by described multi-plate condenser assembly, anode terminal and cathode terminal, apply one or more layers of insulating cement, form airtight protective layer; Secondly, adopt described encapsulating material, the capacitor body that applies insulating cement is encapsulated to parcel.Here; effect by airtight protective layer; not only can increase the airtight effect of capacitor body; and the pressure that capacitor body bears while reducing encapsulation; avoid encapsulating pressure excessive and damage capacitor body; and cause short circuit and the problem such as leakage current is excessive, meanwhile, also improved the air-tightness problem of capacitor body.
Further, in the both sides of described anode terminal and cathode terminal, be respectively equipped with at least one group capacitor body.
Further, described airtight protective layer is polymer.
Further, described airtight protective layer is resin.
Further, described airtight protective layer is resin and/or polymer.
The protective device of the solid electrolytic capacitor body of various embodiments of the present invention, capacitor body comprises multi-plate condenser assembly, multi-plate condenser assembly lamination is arranged on anode terminal and cathode terminal, and the anode portion of capacitor assembly is all connected with anode terminal, negative pole part is all connected with cathode terminal; Between multi-plate condenser assembly, anode terminal and cathode terminal, be by encapsulating materials such as synthetic resin, to encapsulate fixing mode to be fixed together; When encapsulating fixedly: first, on the capacitor body being formed by multi-plate condenser assembly, anode terminal and cathode terminal, apply one or more layers of insulating cement, form airtight protective layer; Adopt again encapsulating material, the capacitor body that applies insulating cement is encapsulated to parcel; Like this, see through the successively decrease pressure of encapsulating material of airtight protective layer, in the time of can avoiding encapsulating, due to the excessive capacitor body that damages of encapsulating material overburden pressure, further cause the problems such as short circuit and leakage current; Meanwhile, be also conducive to improve the air-tightness problem of capacitor body; Thereby can overcome in prior art, encapsulate that pressure is large, easy damaged capacitor body and easily cause short circuit and the excessive defect of leakage current, to realize, air-tightness is good, encapsulation pressure is low, not easy damaged capacitor body and the advantage that is difficult for causing short circuit and leakage current.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in the specification write, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
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:
Fig. 1 is the structural representation of the cutaway view of solid electrolytic capacitor in prior art;
Fig. 2 is the structural representation of the cutaway view of the capacitor assembly of solid electrolytic capacitor in prior art;
Fig. 3 is the structural representation one of the cutaway view of solid electrolytic capacitor body according to the present invention;
Fig. 4 is the structural representation two of the cutaway view of solid electrolytic capacitor according to the present invention;
Fig. 5 is the structural representation of the cutaway view of the capacitor assembly of solid electrolytic capacitor body according to the present invention;
Fig. 6 is the structural representation three of the cutaway view of solid electrolytic capacitor according to the present invention;
Fig. 7 is the structural representation four of the cutaway view of solid electrolytic capacitor according to the present invention.
By reference to the accompanying drawings, in the embodiment of the present invention, the Reference numeral of primary clustering is as follows:
30-solid electrolytic capacitor; 32-anode terminal; 33-cathode terminal; 34-synthetic resin; The airtight protective layer of 341-; 35-has a common boundary; 36-capacitor assembly; 361-metallic conductor; 362-dielectric medium oxide-film; 363-cathode layer; 363a-solid electrolyte layer; 363b-carbon-coating; 363c-silver coating layer; 367-anode portion; 368-negative pole part; 50-elargol.
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 mono-
According to the embodiment of the present invention, provide a kind of protective device of solid electrolytic capacitor body.As shown in Figure 3-Figure 5, the present embodiment comprises solid electrolytic capacitor 30.Wherein, solid electrolytic capacitor 30 comprises the multi-plate condenser assembly 36 that lamination arranges, and multi-plate condenser assembly 36 laminations are arranged on anode terminal 32 and cathode terminal 33; Utilize encapsulation process, adopt synthetic resin 34 encapsulating materials such as grade, the capacitor body consisting of is encapsulated fixing multi-plate condenser assembly 36, anode terminal 32 and cathode terminal 33.
Wherein, in encapsulating fixing process, first, on the capacitor body being formed by multi-plate condenser assembly 36, anode terminal 32 and cathode terminal 33, apply the encapsulating materials such as one or more layers of insulating cement, after the airtight protective layer 341 of the stiff formation of insulating cement (as shown in Figure 3); Secondly, adopt synthetic resin 34 encapsulating materials such as grade, will encapsulate parcel (as shown in Figure 4) by multi-plate condenser assembly 36, anode terminal 32 and cathode terminal 33.Like this, see through the effect of airtight protective layer 341, can reduce encapsulation pressure, while avoiding encapsulating encapsulating material to the pressure of capacitor body excessive and damage capacitor body, thereby avoid causing short circuit and/or the problem such as leakage current is excessive; Meanwhile, be also conducive to improve the problems such as air-tightness of capacitor body.
In the above-described embodiments, as shown in Figure 4 and Figure 5, in multi-plate condenser assembly 36, metallic conductor 361 is anode bodies, is formed with dielectric medium oxide-film 362 and cathode layer 363 on the surface of metallic conductor 361; Cathode layer 363 comprises that solid electrolyte layer 363a, carbon-coating 363b and the silver coating layer 363c by the electric conductive polymer formation of polythiophene system (polythiophene) formed; On dielectric medium oxide-film 362, the part that is formed with cathode layer 363 is negative pole part 368, and the part that is not formed with cathode layer 363 is anode portion 367; Like this, in multi-plate condenser assembly 36, the anode portion 367 of neighboring capacitors assembly 36 is welded and fixed each other, and the negative pole part 368 of neighboring capacitors assembly 36 is then fixing by elargol 50 each other, forms laminated solid electrolytic condenser 30.
In every chip capacitor device assembly 36 manufacture processes, first, can in the aqueous solution of the adipic acid (adipic acid) of predetermined concentration etc., with predetermined voltage, to metallic conductors such as aluminium foils, change into processing, make metallic conductor form the dielectric medium oxide-film 362 being formed by metal oxide; Secondly, the metallic conductors such as aforementioned aluminium foil are immersed in by 3, the mixed liquor that 4-second dioxy support thiophene, P-toluenesulfonic acid ferrous iron and n-butyl alcohol form is till precalculated position, and on dielectric medium oxide-film 362, by chemical oxidation, overlapped, form 3 of electroconductive polymer polymer, 4-second dioxy support thiophene forms solid electrolyte layer 363a; Then, on solid electrolyte layer 363a, coating carbon coating, makes carbon coating form carbon-coating 363b; Finally, on carbon-coating 363b surface, form silver coating layer 363c, produce a slice capacitor assembly 36.
Embodiment bis-
Different from above-described embodiment, in the present embodiment, as shown in Figure 6 and Figure 7, solid electrolytic capacitor 30 comprises the multi-plate condenser assembly 36 that lamination arranges, and multi-plate condenser assembly 36 laminations are arranged on anode terminal 32 and cathode terminal 33; At the opposite side of anode terminal 32 and cathode terminal 33, the parallel multi-plate condenser assembly 36 that another group lamination setting is installed; Utilize encapsulation process, adopt synthetic resin 34, multi-plate condenser assembly 36, anode terminal 32 and cathode terminal 33 are encapsulated and fixed, form another group capacitor body.
Wherein, in encapsulating fixing process; first; on the two group capacitor bodies that formed by multi-plate condenser assembly 36, anode terminal 32 and cathode terminal 33; apply one or more layers of insulating cement, after the airtight protective layer 341 of the stiff formation of insulating cement (as shown in Figure 6), secondly; adopt synthetic resin 34 encapsulating materials such as grade, will encapsulate parcel (as shown in Figure 7) by multi-plate condenser assembly 36, anode terminal 32 and cathode terminal 33.Like this, see through the effect of airtight protective layer 341, can reduce encapsulation pressure, while avoiding encapsulating encapsulating material to the pressure of capacitor body excessive and damage capacitor body, thereby avoid causing short circuit and/or the problem such as leakage current is excessive; Meanwhile, be also conducive to improve the problems such as air-tightness of capacitor body.
In above-described embodiment one and embodiment bis-, be used for the airtight protective layer of coating capacitor body, can be insulating cement, can be also various synthetic resin or polymer.
In sum, the protective device of the solid electrolytic capacitor body of various embodiments of the present invention, capacitor body comprises multi-plate condenser assembly, multi-plate condenser assembly lamination is arranged on anode terminal and cathode terminal, and the anode portion of every chip capacitor device assembly is all connected with anode terminal, negative pole part is all connected with cathode terminal; Between multi-plate condenser assembly, anode terminal and cathode terminal, be by encapsulating materials such as synthetic resin, to encapsulate fixing mode to be fixed together; When encapsulating fixedly: first, on the capacitor body being formed by multi-plate condenser assembly, anode terminal and cathode terminal, apply one or more layers of insulating cement, form airtight protective layer; Adopt again encapsulating material, the capacitor body that applies insulating cement is encapsulated to parcel; Like this, see through the successively decrease pressure of encapsulating material of airtight protective layer, in the time of can avoiding encapsulating, due to the excessive capacitor body that damages of encapsulating material overburden pressure, further cause the problems such as short circuit and leakage current be excessive; Meanwhile, be also conducive to improve the air-tightness problem of capacitor body; Thereby can overcome in prior art, encapsulate that pressure is large, easy damaged capacitor body and easily cause short circuit and the excessive defect of leakage current, to realize, air-tightness is good, encapsulation pressure is low, easy damaged capacitor body and be difficult for causing short circuit and the excessive advantage of leakage current not.
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 protective device of a solid electrolytic capacitor body, comprise the multi-plate condenser assembly that anode terminal, cathode terminal and lamination arrange, described multi-plate condenser assembly lamination is arranged on anode terminal and cathode terminal, and the anode portion of every chip capacitor device assembly is all connected with described anode terminal, negative pole part is all connected with cathode terminal; Between described multi-plate condenser assembly, anode terminal and cathode terminal, be by synthetic resin encapsulating material, to encapsulate fixing mode to be fixed together; It is characterized in that:
The mode that is fixedly connected with between described multi-plate condenser assembly, anode terminal and cathode terminal, be specially: first, on the capacitor body being formed by multi-plate condenser assembly, anode terminal and cathode terminal, apply one or more layers of insulating cement, form airtight protective layer; Secondly, adopt described encapsulating material, the capacitor body that applies insulating cement is encapsulated to parcel.
2. the protective device of solid electrolytic capacitor body according to claim 1, is characterized in that, described airtight protective layer is polymer.
3. the protective device of solid electrolytic capacitor body according to claim 1, is characterized in that, described airtight protective layer is resin.
4. the protective device of solid electrolytic capacitor body according to claim 1, is characterized in that, described airtight protective layer is resin and/or polymer.
5. the protective device of a solid electrolytic capacitor body, comprise the multi-plate condenser assembly that anode terminal, cathode terminal and lamination arrange, described multi-plate condenser assembly builds up and is arranged on anode terminal and cathode terminal, and the anode portion of every chip capacitor device assembly is all connected with described anode terminal, negative pole part is all connected with cathode terminal; Between described multi-plate condenser assembly, anode terminal and cathode terminal, be by synthetic resin encapsulating material, to encapsulate fixing mode to be fixed together; At the opposite side of described anode terminal and cathode terminal, parallel another group capacitor body that is provided with; It is characterized in that:
The mode that is fixedly connected with between described multi-plate condenser assembly, anode terminal and cathode terminal, be specially: first, on the capacitor body being formed by described multi-plate condenser assembly, anode terminal and cathode terminal, apply one or more layers of insulating cement, form airtight protective layer; Secondly, adopt described encapsulating material, the capacitor body that applies insulating cement is encapsulated to parcel.
6. the protective device of solid electrolytic capacitor body according to claim 5, is characterized in that, in the both sides of described anode terminal and cathode terminal, is respectively equipped with at least one group capacitor body.
7. according to the protective device of the solid electrolytic capacitor body described in claim 5 or 6, it is characterized in that, described airtight protective layer is polymer.
8. according to the protective device of the solid electrolytic capacitor body described in claim 5 or 6, it is characterized in that, described airtight protective layer is resin.
9. according to the protective device of the solid electrolytic capacitor body described in claim 5 or 6, it is characterized in that, described airtight protective layer is resin and/or polymer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223305.8A CN102064025B (en) | 2009-11-17 | 2009-11-17 | Protective device for solid electrolytic capacitor body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223305.8A CN102064025B (en) | 2009-11-17 | 2009-11-17 | Protective device for solid electrolytic capacitor body |
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| Publication Number | Publication Date |
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| CN102064025A CN102064025A (en) | 2011-05-18 |
| CN102064025B true CN102064025B (en) | 2014-02-26 |
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| CN200910223305.8A Active CN102064025B (en) | 2009-11-17 | 2009-11-17 | Protective device for solid electrolytic capacitor body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102646520A (en) * | 2011-10-19 | 2012-08-22 | 钰邦电子（无锡）有限公司 | Solid-state electrolytic capacitor with protective structure and manufacturing method thereof |
| US8675349B2 (en) * | 2011-12-14 | 2014-03-18 | Kennet Electronics Corporation | Stack capacitor having high volumetric efficiency |
| CN107731554A (en) * | 2017-09-26 | 2018-02-23 | 华为技术有限公司 | A kind of polymer capacitors and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329950A (en) * | 2008-07-14 | 2008-12-24 | 钰邦电子（无锡）有限公司 | Multilayer superimposition solid electrolytic capacitor |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329950A (en) * | 2008-07-14 | 2008-12-24 | 钰邦电子（无锡）有限公司 | Multilayer superimposition solid electrolytic capacitor |
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