CN207602405U - Stacked capacitor - Google Patents
Stacked capacitor Download PDFInfo
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- CN207602405U CN207602405U CN201721545241.XU CN201721545241U CN207602405U CN 207602405 U CN207602405 U CN 207602405U CN 201721545241 U CN201721545241 U CN 201721545241U CN 207602405 U CN207602405 U CN 207602405U
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- monomer
- out terminal
- stacked capacitor
- vulcanization
- leading
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Abstract
The utility model discloses a kind of stacked capacitor, the monomer overlapped including multi-disc and the anode leading-out terminal and cathode leading-out terminal that are electrically connected on monomer, every monomer include positive terminal, negative pole end and the shielding tree lace between positive terminal and negative pole end；The negative pole end of each monomer is connected together and is connect with cathode leading-out terminal；The positive terminal of each monomer is connected together and is connect with anode leading-out terminal; the negative pole end of every monomer includes the deielectric-coating, solid-state electrolyte layer, carbon pulp layer and the silver slurry layer that are coated on cathode foil surface successively; the outer surface of multi-disc monomer is packaged with insulating resin layer, and stacked capacitor is further included close to the setting of cathode leading-out terminal for stopping anti-vulcanization protect-ing frame structure that sulphur in air and sulfide are contacted with silver slurry layer.Stacked capacitor provided by the utility model, sulfuration resistant effect is good, and reliability is high.
Description
Technical field
The utility model is related to capacitance production field more particularly to stacked capacitors.
Background technology
Lamination solid-state aluminum electrolytic capacitor is using the conducting polymer materials with high conductivity as solid electrolyte
Novel slice type electronic element products.It is with volume smaller, performance is more preferable, wide temperature, long-life, high reliability and high-environmental etc. are all
More advantages, suitable for miniaturization of electronic products, high frequency, high speed, highly reliable, high-environmental development trend and SMT
(Surface Mount Technology, surface mounting technology) requirement.
As shown in Figures 1 to 4, using laminar monomer 10 as basic unit, monomer is divided into existing lamination solid capacitor
Positive terminal 1, negative pole end 3 and between above-mentioned 2 part of shielding tree lace between the two, positive terminal 1 includes valve metal porous foil 7
（Metallic aluminium）And the dielectric film 8 formed on 7 surface of valve metal porous foil（Alundum (Al2O3)）, negative pole end 3 include valve metal
Porous foil（Metallic aluminium）7 and valve metal porous foil surface formed dielectric film 8（Alundum (Al2O3)）, in dielectric film 8
Surface forms solid electrolyte 5（PEDOT）, the current collection layer that is formed on solid electrolyte（Carbon pulp layer 4 and silver slurry layer 6）.By one
The positive terminal 1 of a monomer welds together with anode leading-out terminal 20, and negative pole end 3 and the cathode leading-out terminal 30 of monomer 10 are laminated
Bond together composition one layer of monolithic laminated body, on the basis of above-mentioned one layer of monolithic laminated body, can be laminated it is multiple be monolithically formed it is more
Layer laminates.Laminated body is surrounded and be packaged with this by thermosetting epoxy resin plastics to form a lamination solid-state electricity
Hold.Wherein, above-mentioned anode leading-out terminal 20 and cathode leading-out terminal 30 are in the lamination solid capacitor upper and lower surface of encapsulation
Centre, and pass through bending and fit in lamination solid capacitor lower surface twice.
As shown in figure 5, existing lamination solid capacitor it is current product structure it is simple, anode leading-out terminal 20 and cathode are drawn
Terminal 30 is in the middle position of capacitance upper and lower surface and bending is bonded and capacitance lower surface afterwards twice.Insulating resin layer 9 encapsulates
In monomer 10 surface.30 material of cathode leading-out terminal be high-purity copper, potting resin material be thermosetting epoxy resin, two
Person's material is different, therefore the coefficient of expansion is also just different.The coefficient of expansion of resin material is more than 30 copper product of cathode leading-out terminal
The coefficient of expansion.During Reflow Soldering or wave-soldering, it will appear gap among the two, the sulphur and sulfide in air are along this gap
Intrusion so that the ag material on monolithic surface layer is contacted with sulphur and sulfide inside capacitance, wherein, the direction of arrow meaning is vulcanization road
Diameter.With the extension of time, the ag material of monolithic surface will cure, lead to capacitance ESR（Equivalent Series
Resistance, equivalent series resistance）Increase is so that condenser failure.
Therefore, existing lamination solid-state capacitor is in Reflow Soldering or wave-soldering, between cathode leading-out terminal and potting resin
There is gap and the ag material on monomer surface layer is caused easily to cure, be a urgent problem to be solved.
Utility model content
The utility model proposes stacked capacitor, it is intended to the existing lamination solid-state capacitor of solution is in Reflow Soldering or wave crest
During weldering, occur gap between cathode leading-out terminal and potting resin and the easily sulfureted technology of ag material on monomer surface layer is caused to be asked
Topic.
The utility model proposes stacked capacitor, including multi-disc overlapping monomer and be electrically connected on monomer just
Pole leading-out terminal and cathode leading-out terminal, every monomer include positive terminal, negative pole end and between positive terminal and negative pole ends
Shield tree lace；The negative pole end of each monomer is connected together and is connect with cathode leading-out terminal；The positive terminal of each monomer is connected
Connect together and with anode leading-out terminal, the negative pole end of every monomer include being coated on successively the deielectric-coating on cathode foil surface,
Solid-state electrolyte layer, carbon pulp layer and silver slurry layer, the outer surface of multi-disc monomer are packaged with insulating resin layer, and stacked capacitor further includes
Close to the setting of cathode leading-out terminal for stopping anti-vulcanization protect-ing frame structure that sulphur in air and sulfide are contacted with silver slurry layer.
Further, protect-ing frame structure is set to the junction of cathode leading-out terminal and insulating resin layer, and forms a use
In the semi-surrounding structure of the negative pole end around monomer.
Further, protect-ing frame structure is equipped with frame body and invades road on frame body outer surface for increasing vulcanization
The vulcanization protection portion of diameter.
Further, vulcanization protection portion is using uneven structure, in wavy.
Further, the outer surface for vulcanizing protection portion is additionally provided with and vulcanizes protective layer made of sulfuration resistant material.
Further, the contact position of cathode leading-out terminal and insulating resin layer is equipped with to vulcanize made of sulfuration resistant material and protect
Sheath.
Further, vulcanization protective layer is coated on the contact position of cathode leading-out terminal and insulating resin layer or vulcanization is protected
First in shield portion vulcanizes protective layer and cladding and the second vulcanization protective layer for being crosslinking in the first vulcanization protective layer outer surface.
Further, the first vulcanization protective layer uses and the similar thermal expansion coefficient of cathode leading-out terminal and protect-ing frame structure
Material is made；Second vulcanization protective layer uses the material with the similar thermal expansion coefficient of protect-ing frame structure to be made.
Further, cathode foil uses porous aluminium foil.
Further, anode leading-out terminal and cathode leading-out terminal are stretched out outside insulating resin layer, and pass through insulating resin layer
It is isolated.
Having the beneficial effect that acquired by the utility model：
Stacked capacitor provided by the utility model, compared with prior art, by being increased on cathode leading-out terminal
For stopping protect-ing frame structure that sulphur in air and sulfide are contacted with the ag material in silver slurry layer so that internal monomer surface layer
Ag material does not cure, and capacitance ESR will not increase, and capacitance will not fail, so as to ensure the reliability of capacitance.The utility model carries
The stacked capacitor of confession, sulfuration resistant effect is good, and reliability is high.
Description of the drawings
Fig. 1 is the structure diagram of the monomer of existing stacked capacitor；
Fig. 2 is the diagrammatic cross-section of monomer described in Fig. 1；
Fig. 3 is the diagrammatic cross-section of existing stacked capacitor；
Fig. 4 is the dimensional structure diagram of existing stacked capacitor；
Fig. 5 is the vulcanization diagrammatic cross-section of existing stacked capacitor；
Fig. 6 is the laminated construction schematic diagram of utility model stacked capacitor；
Fig. 7 is the diagrammatic cross-section of the monomer of utility model stacked capacitor.
Drawing reference numeral explanation：
10th, monomer；20th, anode leading-out terminal；30th, cathode leading-out terminal；11st, positive terminal；12nd, negative pole end；13rd, glue is shielded
Line；111st, cathode foil；121st, deielectric-coating；122nd, solid-state electrolyte layer；123rd, carbon pulp layer；124th, silver slurry layer；40th, protect-ing frame structure；
41st, frame body；42nd, vulcanize protection portion；50th, vulcanize protective layer.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
As shown in Figure 6 and Figure 7, the utility model first embodiment propose it is a kind of the utility model proposes laminated body, capacitor
Device, the monomer 10 overlapped including multi-disc and the anode leading-out terminal 20 and cathode leading-out terminal 30 that are electrically connected on monomer 10,
Every monomer 10 includes positive terminal 11, negative pole end 12 and the shielding tree lace 13 between positive terminal 11 and negative pole end 12；Each
The negative pole end 12 of monomer 10 is connected together and is connect with cathode leading-out terminal 30；11 phase of positive terminal of each monomer 10 is connected in one
It rises and is connect with anode leading-out terminal 20, the negative pole end 12 of every monomer 10 includes being coated on Jie on 111 surface of cathode foil successively
Plasma membrane 121, solid-state electrolyte layer 122, carbon pulp layer 123 and silver slurry layer 124, the outer surface of multi-disc monomer 10 are packaged with insulating resin
Layer, stacked capacitor, which is further included, to be set to stop sulphur in air and sulfide and silver slurry layer close to cathode leading-out terminal 30
The anti-vulcanization protect-ing frame structure 40 of 124 contacts.Wherein, cathode foil 111 uses porous aluminium foil；Anode leading-out terminal 20 and cathode are drawn
Terminal 30 is stretched out outside insulating resin layer, and is passed through the insulating resin layer and be isolated.
Stacked capacitor provided in this embodiment, compared with prior art, by increasing use on cathode leading-out terminal
In the protect-ing frame structure for stopping sulphur in air and sulfide and being contacted with the ag material in silver slurry layer so that the silver on internal monomer surface layer
Material does not cure, and capacitance ESR will not increase, and capacitance will not fail, so as to ensure the reliability of capacitance.It is provided in this embodiment
Stacked capacitor, sulfuration resistant effect is good, and reliability is high.
Preferably, as shown in fig. 6, stacked capacitor provided in this embodiment, protect-ing frame structure 40 are set to cathode exit
The junction of son 30 and insulating resin layer, and form a semi-surrounding structure for being used for the negative pole end 12 around monomer 10.Specifically
Ground, protect-ing frame structure 40 are equipped with frame body 41 and vulcanize the vulcanization for invading path on 41 outer surface of frame body for increasing
Protection portion 42.Optionally, vulcanization protection portion 42 uses uneven structure, in wavy.
Stacked capacitor provided in this embodiment is compared with prior art, uneven by being provided in protect-ing frame structure
Structure increases the path of vulcanization intrusion so that the ag material on internal monomer surface layer does not cure, and capacitance ESR will not increase, capacitance
It will not fail, so as to ensure the reliability of capacitance.Stacked capacitor provided in this embodiment, sulfuration resistant effect is good, and reliability is high.
Preferably, see Fig. 6, stacked capacitor provided in this embodiment, the outer surface of vulcanization protection portion 42 be additionally provided with by
Vulcanization protective layer 50 made of sulfuration resistant material.And cathode leading-out terminal 30 and the contact position of insulating resin layer also are provided with by resisting
Vulcanization protective layer 50 made of vulcanizing material.Specifically, vulcanization protective layer 50 is coated on cathode leading-out terminal 30 and insulation
First on the contact position of resin layer or vulcanization protection portion 42 vulcanizes protective layer and cladding and is crosslinking in the first vulcanization protective layer
Second vulcanization protective layer of outer surface.Specifically, the first vulcanization protective layer uses and cathode leading-out terminal 30 and protect-ing frame structure 40
The A materials of similar thermal expansion coefficient be made；Second vulcanization protective layer is using the B with the similar thermal expansion coefficient of protect-ing frame structure 40
Material is made.Wherein, the A materials in the first vulcanization protective layer are coated in connecing for cathode leading-out terminal 30 and insulating resin layer in advance
The surface of synapsis and protect-ing frame structure 400, so as to the contact position with cathode leading-out terminal 30 and insulating resin layer and protecting frame
Frame 400 contacts closely；The B material of second vulcanization protective layer is together with the A crosslink materials in the first vulcanization protective layer and coats
In A material surfaces.After laminated body is encapsulated by insulating resin layer, B material comes into full contact with epoxy resin.Therefore, in Reflow Soldering or
During wave-soldering, it is difficult to gap occur between cathode leading-out terminal 30 and insulating resin layer, simultaneously because the presence of protect-ing frame structure 40,
Vulcanize path to increase so that the ag material on internal monolithic surface layer does not cure, so as to ensure the reliability of capacitance.
Stacked capacitor provided in this embodiment, compared with prior art, by the outer surface of protect-ing frame structure and
The contact position setting vulcanization protective layer of cathode leading-out terminal 30 and insulating resin layer, in Reflow Soldering or wave-soldering, cathode is drawn
It is difficult to gap occur between terminal and potting resin, simultaneously because protect-ing frame structure exists, vulcanization path increases so that internal monomer
The ag material on surface layer does not cure, and capacitance ESR will not increase, and capacitance will not fail, so as to ensure the reliability of capacitance.This implementation
The stacked capacitor that example provides, sulfuration resistant effect is good, and reliability is high.
It these are only the preferred embodiment of the utility model, it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is directly or indirectly used in
Other related technical areas are equally included in the patent within the scope of the utility model.
Claims (10)
1. a kind of stacked capacitor, which is characterized in that include the monomer of multi-disc overlapping（10）And it is electrically connected to the monomer
（10）On anode leading-out terminal（20）With cathode leading-out terminal（30）, the every monomer（10）Including positive terminal（11）, it is negative
Extremely（12）And positioned at the positive terminal（11）With the negative pole end（12）Between shielding tree lace（13）；Each monomer
（10）Negative pole end（12）Be connected together and with the cathode leading-out terminal（30）Connection；Each monomer（10）Anode
End（11）Be connected together and with the anode leading-out terminal（20）Connection, which is characterized in that the every monomer（10）It is negative
Extremely（12）Including being coated on cathode foil successively（111）The deielectric-coating on surface（121）, solid-state electrolyte layer（122）, carbon pulp layer
（123）And silver slurry layer（124）, monomer described in multi-disc（10）Outer surface be packaged with insulating resin layer, the stacked capacitor is also
Including close to the cathode leading-out terminal（30）It sets to stop sulphur in air and sulfide and silver paste layer（124）It connects
Tactile anti-vulcanization protect-ing frame structure（40）.
2. stacked capacitor according to claim 1, which is characterized in that
The protect-ing frame structure（40）It is set to the cathode leading-out terminal（30）With the junction of the insulating resin layer, and formed
One is used for around the monomer（10）Negative pole end（12）Semi-surrounding structure.
3. stacked capacitor according to claim 2, which is characterized in that
The protect-ing frame structure（40）Equipped with frame body（41）And positioned at the frame body（41）It is used to increase sulphur on outer surface
Change the vulcanization protection portion in intrusion path（42）.
4. stacked capacitor according to claim 3, which is characterized in that
The vulcanization protection portion（42）Using uneven structure, in wavy.
5. stacked capacitor according to claim 4, which is characterized in that
The vulcanization protection portion（42）Outer surface be additionally provided with and vulcanize protective layer made of sulfuration resistant material（50）.
6. stacked capacitor according to claim 5, which is characterized in that
The cathode leading-out terminal（30）It is equipped with to vulcanize made of sulfuration resistant material with the contact position of the insulating resin layer and protect
Sheath（50）.
7. stacked capacitor according to claim 6, which is characterized in that
The vulcanization protective layer（50）Including being coated on the cathode leading-out terminal（30）With the contact position of the insulating resin layer
Or the vulcanization protection portion（42）On first vulcanization protective layer and cladding and be crosslinking in it is described first vulcanization protective layer appearance
The second vulcanization protective layer in face.
8. stacked capacitor according to claim 7, which is characterized in that
The first vulcanization protective layer uses and the cathode leading-out terminal（30）And the protect-ing frame structure（40）Thermal expansion system
Material is made similar in number；The second vulcanization protective layer uses and the protect-ing frame structure（40）Similar thermal expansion coefficient material
Material is made.
9. stacked capacitor according to claim 1, which is characterized in that
The cathode foil（111）Using porous aluminium foil.
10. stacked capacitor according to claim 9, which is characterized in that
The anode leading-out terminal（20）With the cathode leading-out terminal（30）It stretches out outside the insulating resin layer, and passes through described
Insulating resin layer is isolated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721545241.XU CN207602405U (en) | 2017-11-18 | 2017-11-18 | Stacked capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721545241.XU CN207602405U (en) | 2017-11-18 | 2017-11-18 | Stacked capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207602405U true CN207602405U (en) | 2018-07-10 |
Family
ID=62759477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721545241.XU Active CN207602405U (en) | 2017-11-18 | 2017-11-18 | Stacked capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207602405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946075A (en) * | 2017-11-18 | 2018-04-20 | 湖南艾华集团股份有限公司 | Stacked capacitor |
| CN112133557A (en) * | 2019-06-24 | 2020-12-25 | 三星电机株式会社 | Electronic assembly |
-
2017
- 2017-11-18 CN CN201721545241.XU patent/CN207602405U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946075A (en) * | 2017-11-18 | 2018-04-20 | 湖南艾华集团股份有限公司 | Stacked capacitor |
| CN107946075B (en) * | 2017-11-18 | 2024-01-30 | 湖南艾华集团股份有限公司 | Stacked capacitor |
| CN112133557A (en) * | 2019-06-24 | 2020-12-25 | 三星电机株式会社 | Electronic assembly |
| CN112133557B (en) * | 2019-06-24 | 2023-12-08 | 三星电机株式会社 | Electronic assembly |
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