CN202585134U - Solid electrolytic capacitor possessing protection structure - Google Patents
Solid electrolytic capacitor possessing protection structure Download PDFInfo
- Publication number
- CN202585134U CN202585134U CN 201120399080 CN201120399080U CN202585134U CN 202585134 U CN202585134 U CN 202585134U CN 201120399080 CN201120399080 CN 201120399080 CN 201120399080 U CN201120399080 U CN 201120399080U CN 202585134 U CN202585134 U CN 202585134U
- Authority
- CN
- China
- Prior art keywords
- capacitor
- terminal
- cathode terminal
- solid electrolytic
- anode terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 104
- 239000007787 solid Substances 0.000 title claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 239000011241 protective layer Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 abstract description 7
- 239000000057 synthetic resin Substances 0.000 abstract description 7
- 239000005022 packaging material Substances 0.000 abstract description 4
- 238000012858 packaging process Methods 0.000 abstract description 4
- 239000003292 glue Substances 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 19
- 239000007784 solid electrolyte Substances 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 5
- 238000005538 encapsulation Methods 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 4
- 239000005030 aluminium foil Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000000116 mitigating effect Effects 0.000 description 3
- 241000790917 Dioxys <bee> Species 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229930192474 thiophene Natural products 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical class CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- YVSCCMNRWFOKDU-UHFFFAOYSA-N hexanedioic acid Chemical compound OC(=O)CCCCC(O)=O.OC(=O)CCCCC(O)=O YVSCCMNRWFOKDU-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/008—Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/15—Solid electrolytic capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The utility model provides a solid electrolytic capacitor possessing a protection structure, wherein a plurality of capacitor assemblies are stacked with each other and are in electric connection with an anode terminal and a cathode terminal; the capacitor assemblies, the anode terminal and the cathode terminal are packed by packaging materials such as synthetic resin, etc. In packaging process, the capacitor assemblies, the anode terminal and the cathode terminal are covered with insulation glue as a protection layer of a capacitor body and the capacitor body formed by the capacitor assemblies, the anode terminal and the cathode terminal and covered with insulation glue is packed by the packaging materials. The protection layer not only can increase airtight effects of a capacitor, but also can reduce pressure born by the capacitor body in packing and avoid the damage to the capacitor body caused by too much packing stress; the problems of short circuit and excessive leakage current can be avoided and the airtight problem can be improved.
Description
Technical field
The utility model relates to a kind of solid electrolytic capacitor, relates in particular to a kind of solid electrolytic capacitor with protection structure.
Background technology
Like Fig. 1, shown in Figure 2, in the prior art, solid electrolytic capacitor 10 has possessed the capacitor assembly 6 of multi-disc laminated, and each chip capacitor device assembly 6 is as shown in Figure 2.Those capacitor assemblies 6 are equipped with anode terminal 12 and cathode terminal 13 in undermost capacitor assembly 6 belows under laminated state.Utilize synthetic resin 14 that capacitor assembly 6, anode terminal 12 and cathode terminal 13 are covered, and only stay the part lower surface of anode terminal 12 and cathode terminal 13.
About capacitor assembly 6, be formed with dielectric medium oxide-film 2 and cathode layer 3 on the surface of the aluminium foil 1 of metal, this cathode layer 3 is made up of solid electrolyte layer 3a, a carbon-coating 3b and a silver coating layer 3c of an electric conductive polymer.The part that on dielectric medium oxide-film 2, is formed with cathode layer 3 becomes negative pole part 8, and the part that is not formed with cathode layer 3 becomes anode portion 7.Multi-plate condenser assembly 6 storehouses are together the time, and the anode portion 7 of adjacent capacitor assembly 6 is welded to one another fixing, and make the negative pole part 8 of adjacent capacitor assembly 6 then fixing by conduction solid 18 each other, and form multilayer solid electrolytic capacitor 10.
Near the boundary 15 of negative pole part 8 and anode portion 7, be provided with first stress and relax 16 and second stress that cracks and relax and crack 17.Crack 16,17 owing to so be formed with the mitigation of two stress, anode portion 7 can relax 16,17 bendings of cracking at these two stress.Therefore, in the boundary 15 of anode portion 7 and negative pole part 8 or can suppress applying of bending stress near it, the stress that therefore puts on this part can diminish.Yet; The general encapsulation pressure of making capacitor is all very big, so though this patent case is provided with first stress relaxes 16 and second stress mitigation of cracking and crack 17, when wrapper is laminated with resin 14; Encapsulation pressure still damages capacitor assembly 6 easily; Causing the excessive problem of short circuit and leakage current, therefore how to improve the excessive problem of encapsulation pressure in the prior art, will be the problem that relevant industry is demanded urgently making great efforts.
The utility model content
The purpose of the utility model is to provide a kind of solid electrolytic capacitor with protection structure.The utility model is after the capacitor body that capacitor assembly, anode terminal and cathode terminal constituted is accomplished; Prior on this capacitor body the lining insulating cement as protective layer; Be used for reducing the encapsulating material pressure in when lining by protective layer; And can avoid encapsulating the time, the pressure that capacitor body bore be excessive and damage capacitor assembly body also improves its bubble-tight problem simultaneously.
The technical scheme of the utility model is:
The utility model provides a kind of solid electrolytic capacitor with protection structure, and it comprises: an anode terminal, a cathode terminal, a plurality of capacitor assembly, an insulation unit and an encapsulating material.The laminated top of those capacitor assemblies (those capacitor assemblies also can be simultaneously laminated in the top and the below of this anode terminal and this cathode terminal) in this anode terminal and this cathode terminal; To constitute a capacitor body, wherein an anode portion of each capacitor assembly and a negative pole part are electrically connected with this anode terminal and this cathode terminal respectively.This insulation unit by one or insulating cement more than one deck form; This insulation unit coats the capacitor body by this anode terminal, this cathode terminal and those capacitor assembly constituted; So that form a hermetic type protective layer on this capacitor body, wherein the part of the part of this anode terminal and this cathode terminal exposes to the outside of this insulation unit.This encapsulating material coats should the insulation unit.
Description of drawings
Fig. 1 is the generalized section of existing solid electrolytic capacitor.
Fig. 2 is the generalized section of the capacitor assembly of existing solid electrolytic capacitor.
Fig. 3 is one of generalized section of the utility model solid electrolytic capacitor.
Fig. 4 be the utility model solid electrolytic capacitor generalized section two.
Fig. 5 is the generalized section of the capacitor assembly of the utility model solid electrolytic capacitor.
Fig. 6 is one of the generalized section of the another kind of embodiment of the utility model solid electrolytic capacitor.
Fig. 7 be the utility model solid electrolytic capacitor another kind of embodiment generalized section two.
[reference numeral explanation]
Aluminium foil 1 dielectric medium oxide-film 2
Cathode layer 3 solid electrolyte layer 3a
Carbon-coating 3b silver coating layer 3c
Capacitor assembly 6 anode portion 7
Anode terminal 12 cathode terminals 13
Synthetic resin 14 has a common boundary 15
First stress relaxes the 16 second stress mitigation of cracking and cracks 17
Conduction solid 18 solid electrolytic capacitors 30
Dielectric medium oxide-film 362 cathode layers 363
Have a common boundary 35
Embodiment
For enabling further to understand the characteristic and the technology contents of the utility model, see also following detailed description and accompanying drawing, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited about the utility model.
Figure 3, Figure 4, the solid electrolytic capacitor of the utility model 30 includes a plurality of capacitor assembly 36, those are stacked capacitor assembly 36 to the anode terminal 32 and the cathode terminal 33; The use of the packaging process, a synthetic resin 34 other materials coated, the capacitor assembly 36, the anode terminal 32 and the cathode terminal of the capacitor body 33 to be constituted package; packaging process, the first of the capacitor assembly 36, the anode terminal 32 and the cathode terminal of the capacitor 33 constituting the main body covered with a an insulating layer or more adhesive (insulating unit), when the insulating Dry and hard plastic protective layer 341 is formed after the airtight (as in the third figure), and then to packaging material 34 of the capacitor assembly 36, the anode terminal 32 and a cathode terminal 33 to be coated packaging (such as the fourth figure).So; See through the pressure that is used for reducing the encapsulation covering of protective layer 341; When avoiding encapsulating encapsulating material to the pressure of capacitor body excessive and damage capacitor body, and cause the problem of the excessive and/or leakage current of short circuit, also improve its bubble-tight problem simultaneously.
Above-mentioned capacitor assembly 36 is like Fig. 4, shown in Figure 5, is being formed with dielectric medium oxide-film 362 and cathode layer 363 as anode bodies and surface itself that can be metallic conductor 361; This cathode layer 363 can be made up of solid electrolyte layer 363a, a carbon-coating 363b and a silver coating layer 363c of an electric conductive polymer; The part that on above-mentioned dielectric medium oxide-film 362, is formed with cathode layer 363 becomes negative pole part 368, and the part that is not formed with cathode layer 363 becomes anode portion 367; The capacitor assembly 36 that is so constituted is under the state of laminated multi-disc; Make the anode portion 367 of neighboring capacitors assembly 36 be welded to one another fixing; And make the negative pole part 368 of adjacent capacitor assembly 36 then fixing by elargol 50 each other, and form multilayer solid electrolytic capacitor body 30.
Manufacture about capacitor assembly 36; One of which embodiment can be in the aqueous solution of adipic acid (adipic acid) of predetermined concentration etc.; With predetermined voltage metallic conductors such as aluminium foil are changed into processing; It is formed by after the dielectric medium oxide-film 362 that metal oxide constituted, makes metallic conductor such as aforementioned aluminium foil be immersed in by 3,4-second dioxy support thiophene, P-toluenesulfonic acid be ferrous, and the mixed liquor that constituted of 1-butanols till the precalculated position; And on dielectric medium oxide-film 362 by chemical oxidation heavy with form 3 of electroconductive polymer polymer, the 4-second dioxy support solid electrolyte layer 363a that thiophene constituted.On solid electrolyte layer 363a, coat carbon coating, make it form carbon-coating 363b.At last, form silver coating layer 363c and produce capacitor assembly 36 by surface at this carbon-coating 363b.
Like Fig. 6, shown in Figure 7, it is another embodiment generalized section that the utlity model has the solid electrolytic capacitor of protection structure.Most solid electrolytic capacitor 30 includes a capacitor laminate assembly 36, capacitor assembly 36 is laminated on the anode terminal 32 and the cathode terminal 33; anode terminal 32 and the cathode terminal 33 is mounted on the other side and another set of stacked layers by most The capacitor assembly 36, the capacitor 34 by a synthetic resin assembly 36, the anode terminal 32 and the cathode terminal of the capacitor body 33 composed of the composition to be encapsulated; wherein the packaging process, the first of the capacitor assembly 36, the anode terminal 32 and the cathode terminal 33 composed of two capacitors or the one or more layers coated on the plastic insulation, etc. Dried this insulating plastic air-tight and hard protective layer 341 is formed after (Figure 6), and then to packaging material 34 of the capacitor assembly 36, the anode terminal 32 and cathode terminal 33 to be coated package (see Figure 7).So because protective layer 341 be used for reduce when encapsulation pressure of being born of capacitor body, the excessive and damage capacitor body of pressure when avoiding encapsulating, and cause the problem of the excessive and leakage current of short circuit also improves its bubble-tight problem simultaneously.The utility model the above embodiments, the protective layer of its capacitor body that is used for being covered is except can beyond insulating cement, more can be various synthetic resin or polymer as above-mentioned.
The above is merely the preferable possible embodiments of the utility model, and the claim of non-so limitation the utility model so use the equivalence techniques variation that the utility model specification and graphic content do such as, all is contained in the scope of the utility model.
Claims (8)
1. one kind has the solid electrolytic capacitor of protecting structure, it is characterized in that comprising:
One anode terminal;
One cathode terminal;
A plurality of capacitor assemblies, it is laminated in the top of this anode terminal and this cathode terminal, and to constitute a capacitor body, wherein an anode portion of each capacitor assembly and a negative pole part are electrically connected with this anode terminal and this cathode terminal respectively;
One insulation unit; Its by one or insulating cement more than one deck form; This insulation unit coats the capacitor body by this anode terminal, this cathode terminal and those capacitor assembly constituted; So that form a hermetic type protective layer on this capacitor body, wherein the part of the part of this anode terminal and this cathode terminal exposes to the outside of this insulation unit; And
One encapsulating material, it coats should the insulation unit.
2. the solid electrolytic capacitor with protection structure as claimed in claim 1, it is characterized in that: wherein this hermetic type protective layer is a polymer.
3. the solid electrolytic capacitor with protection structure as claimed in claim 1, it is characterized in that: wherein this hermetic type protective layer is a resin.
4. the solid electrolytic capacitor with protection structure as claimed in claim 1, it is characterized in that: wherein this encapsulating material is at least a of resin, polymer.
5. one kind has the solid electrolytic capacitor of protecting structure, it is characterized in that comprising:
One anode terminal;
One cathode terminal;
A plurality of capacitor assemblies, it is simultaneously laminated in the top and the below of this anode terminal and this cathode terminal, and to constitute a capacitor body, wherein an anode portion of each capacitor assembly and a negative pole part are electrically connected with this anode terminal and this cathode terminal respectively;
One insulation unit; Its by one or insulating cement more than one deck form; This insulation unit coats the capacitor body by this anode terminal, this cathode terminal and those capacitor assembly constituted; So that form on this capacitor body one be positioned at the top and the below of this anode terminal and this cathode terminal simultaneously the hermetic type protective layer, wherein the part of the part of this anode terminal and this cathode terminal exposes to the outside of this insulation unit; And
One encapsulating material, it is positioned at the top and the below of this anode terminal and this cathode terminal simultaneously, to be used for coating this insulation unit.
6. the solid electrolytic capacitor with protection structure as claimed in claim 5, it is characterized in that: wherein this hermetic type protective layer is a polymer.
7. the solid electrolytic capacitor with protection structure as claimed in claim 5, it is characterized in that: wherein this hermetic type protective layer is a resin.
8. the solid electrolytic capacitor with protection structure as claimed in claim 5, it is characterized in that: wherein this encapsulating material is at least a person of resin, polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120399080 CN202585134U (en) | 2011-10-19 | 2011-10-19 | Solid electrolytic capacitor possessing protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120399080 CN202585134U (en) | 2011-10-19 | 2011-10-19 | Solid electrolytic capacitor possessing protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202585134U true CN202585134U (en) | 2012-12-05 |
Family
ID=47254520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120399080 Expired - Lifetime CN202585134U (en) | 2011-10-19 | 2011-10-19 | Solid electrolytic capacitor possessing protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202585134U (en) |
-
2011
- 2011-10-19 CN CN 201120399080 patent/CN202585134U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |