CN107316747B - The production method of low ESR lamination solid-state aluminum electrolytic capacitor - Google Patents
The production method of low ESR lamination solid-state aluminum electrolytic capacitor Download PDFInfo
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- CN107316747B CN107316747B CN201710528416.4A CN201710528416A CN107316747B CN 107316747 B CN107316747 B CN 107316747B CN 201710528416 A CN201710528416 A CN 201710528416A CN 107316747 B CN107316747 B CN 107316747B
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- lamination
- capacitor
- silver paste
- solid
- production method
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- 239000003990 capacitor Substances 0.000 title claims abstract description 65
- 238000003475 lamination Methods 0.000 title claims abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910052709 silver Inorganic materials 0.000 claims abstract description 47
- 239000004332 silver Substances 0.000 claims abstract description 47
- 239000007787 solid Substances 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 3
- 229920002521 macromolecule Polymers 0.000 claims 1
- 229920000642 polymer Polymers 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002322 conducting polymer Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
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
- H01G9/15—Solid electrolytic capacitors
-
- 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
- H01G9/0029—Processes of manufacture
-
- 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
- H01G9/012—Terminals specially adapted for solid capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The production method of low ESR lamination solid-state aluminum electrolytic capacitor, includes the following steps, 1) the lamination capacitor monolithic for being covered with electroconductive polymer layer and carbon-coating is immersed in silver paste, lower edge of the silver paste liquid level lower than capacitor monolithic shielding tree lace；2) after capacitor monolithic being soaked silver paste, it is placed on semi-solid preparation at a temperature of room temperature or 40-60 degrees Celsius, so that silver layer is in the state of half softening, and the solvent in silver paste is volatilized；3) the capacitor monolithic after semi-solid preparation is subjected to lamination and forms fuse, the good capacitor core of lamination is placed in extrusion die compress later；4) extrusion die for being extruded with capacitor core is placed in high temperature oven, so that the silver paste of semi-solid preparation and the elargol of lamination coating are solidified.The ESR for the capacitor that the production method of low ESR lamination solid-state aluminum electrolytic capacitor of the invention is produced is small.
Description
Technical field
The present invention relates to a kind of lamination solid-state capacitor more particularly to a kind of low ESR lamination solid-state aluminum electrolytic capacitors
Production method.
Background technique
Lamination solid-state aluminum electrolytic capacitor is using the conducting polymer materials with high conductivity as solid electrolyte
It is smaller with volume for novel slice type electronic element products, 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 surface mount skill
Art (SMT) requirement.Equivalent series resistance (ESR) is as one of most important classical insulation of capacitor, and the ESR of capacitor is not only
The effect of capacitor is directly affected, or even can also cause the serious consequences such as circuit malfunction even damage, and lamination solid-state aluminium electroloysis electricity
Container is well-known with ultralow ESR characteristic in all kinds of capacitors.The low ESR characteristic of lamination sheet type solid capacitor in addition to capacitor itself
Had outside the Pass using parallel-connection structure, is also using silver paste interconnection with capacitor cathode in relation to (good electric conductivity of silver paste), so that
Capacitor has lower ESR.The compaction rate of the contact and silver layer itself of silver paste can be straight outside each elementary layer inside capacitor
Connect the final ESR characteristic for influencing product.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and the consistency for providing a kind of silver layer is high, etc.
Imitate the production method of the small lamination solid-state aluminum electrolytic capacitor of series resistance.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows: low ESR lamination solid-state aluminum electrolytic capacitor
Production method includes the following steps, 1) the lamination capacitor monolithic that will be covered with electroconductive polymer layer and carbon-coating immerses in silver paste, silver paste
Lower edge of the liquid level lower than capacitor monolithic shielding tree lace；2) after capacitor monolithic being soaked silver paste, room temperature or 40-60 degrees Celsius are placed on
At a temperature of semi-solid preparation so that silver layer is in the state of half softening, and the solvent in silver paste is volatilized；It 3) will be after semi-solid preparation
Capacitor monolithic carries out lamination and forms fuse, the good capacitor core of lamination is placed in extrusion die compresses later；4) it will squeeze
There is the extrusion die of capacitor core to be placed in high temperature oven, so that the silver paste of semi-solid preparation and the elargol of lamination coating are consolidated
Change.The silver paste of semi-solid preparation can be in extrusion process due to maintaining certain flexibility, so that silver layer will not squeeze after lamination
It is destroyed during pressure, it is also possible that the silver layer on each monolithic comes into full contact with, to reduce silver layer contact resistance.In addition, squeezing
Solidifying silver paste under pressure condition can make the silver layer of capacitor reach higher consistency, to further decrease caused by silver layer
Resistance.
The production method of above-mentioned low ESR lamination solid-state aluminum electrolytic capacitor, it is preferred that solidify capacitor core
Afterwards, it is put into encapsulating mould and carries out resin-encapsulated, and carry out burn-in test.Capacitor core is subjected to resin-encapsulated, such energy
Enough reduce the size of capacitor, and metal shell and leather point can not used.
The production method of above-mentioned low ESR lamination solid-state aluminum electrolytic capacitor, it is preferred that the extrusion die includes upper pressure
Block, lower lock block, limit for height piece, residual plate and fastening screw, limit for height piece two sides are respectively arranged with upper holder block and lower lock block, described
It is provided with residual plate between limit for height piece and upper holder block, is also equipped with residual plate between the limit for height piece and lower lock block；The fastening
Screw is arranged on upper holder block, and upper holder block and lower lock block link together across two pieces of residual plates and limit for height piece.
The production method of above-mentioned low ESR lamination solid-state aluminum electrolytic capacitor, it is preferred that the upper holder block and lower lock block by
Stainless steel is made, and limit for height piece is the stainless steel substrates with preset thickness.In the present invention, limit for height piece primarily serves control
The effect of laminated body, capacitor thickness, this thickness are the thickness according to stacked capacitor and design.Residual plate, which primarily serves, prevents silver
Slurry and silver paste are adhered to the effect on extrusion die, and the material of residual plate preferentially selects polytetrafluoroethylene (PTFE).
Compared with the prior art, the advantages of the present invention are as follows: the life of low ESR lamination solid-state aluminum electrolytic capacitor of the invention
The capacitor that production method is produced, capacitor monolithic is after being impregnated with silver paste, and without hot setting, only low temperature half is solid in progress
Change, after element stack is integrated, hot setting carried out under squeezed state, the advantageous resistance for reducing silver layer itself simultaneously,
Advantageously reduce the contact resistance between each unit silver layer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of capacitor monolithic in the present invention.
Fig. 2 is the structural schematic diagram of extrusion die in the present invention.
Marginal data
1, electroconductive polymer layer；2, carbon-coating；3, tree lace is shielded；4, silver paste coating；5, upper holder block；6, lower lock block；7, limit for height
Piece；8, residual plate；9, fastening screw.
Specific embodiment
To facilitate the understanding of the present invention, present invention work more comprehensively, is meticulously described below in conjunction with preferred embodiment,
But the protection scope of the present invention is not limited to the following specific embodiments.
It should be strongly noted that when to be described as " be fixed on, be fixed in, be connected to or be connected to " another for a certain element
When on element, it can be directly fixed, affixed, connection or is connected on another element, be also possible to by connecting among other
Fitting is indirectly fixed, affixed, connects or is connected on another element.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection scope.
Embodiment
The production method of low ESR lamination solid-state aluminum electrolytic capacitor, includes the following steps, 1) electroconductive polymer layer will be covered with
1 and carbon-coating 2 lamination capacitor monolithic immerse silver paste in, silver paste liquid level lower than capacitor monolithic shielding tree lace 3 lower edge；2) by capacitor
After monolithic soaks silver paste, it is placed on semi-solid preparation at a temperature of room temperature or 50 degrees Celsius, so that silver layer is in the state of half softening, and
And the solvent in silver paste volatilizees, to improve the compactness of silver paste；3) the capacitor monolithic after semi-solid preparation lamination is carried out to be formed
The good capacitor core of lamination is placed in extrusion die compresses later by fuse；4) extrusion die of capacitor core will be extruded with
It is placed in high temperature oven, so that the silver paste of semi-solid preparation and the elargol of lamination coating are solidified, forms silver paste coating 4；5) will
After capacitor core is solidified, it is put into encapsulating mould and carries out resin-encapsulated, and carry out burn-in test.
Extrusion die as Figure 1-Figure 2 includes upper holder block 5, lower lock block 6, limit for height piece 7, residual plate 8 and fastening screw
9,7 two sides of limit for height piece are respectively arranged with upper holder block 5 and lower lock block 6, and residual plate 8 is provided between limit for height piece 7 and upper holder block 5, limit
Residual plate 8 is also equipped between high piece 7 and lower lock block 6；Fastening screw 9 is arranged on upper holder block 5, and passes through two pieces of residual plates
8 and limit for height piece 7 upper holder block 5 and lower lock block 6 are linked together.Upper holder block 5 and lower lock block 6 are made by stainless steel, limit
High piece 7 is the stainless steel substrates with preset thickness, and fastening screw is buttferfly-type fastening screw.
The capacitor that the production method of the low ESR lamination solid-state aluminum electrolytic capacitor of the present embodiment is produced, capacitor list
Piece is after being impregnated with silver paste, and without hot setting, only low temperature semi-solid preparation in progress is squeezing shape after element stack is integrated
Hot setting is carried out under state, the advantageous resistance for reducing silver layer itself simultaneously, is also beneficial to reduce the contact between each unit silver layer
Resistance.
Claims (4)
1. the production method of low ESR lamination solid-state aluminum electrolytic capacitor, it is characterised in that: include the following steps, 1) it will be covered with and lead
The lamination capacitor monolithic of electric macromolecule layer and carbon-coating immerses in silver paste, lower edge of the silver paste liquid level lower than capacitor monolithic shielding tree lace；
2) after capacitor monolithic being soaked silver paste, it is placed on semi-solid preparation at a temperature of room temperature or 40-60 degrees Celsius, so that silver layer is in medium-soft
The state of change, and the solvent in silver paste is volatilized；3) the capacitor monolithic after semi-solid preparation is subjected to lamination and forms fuse, later will
The good capacitor core of lamination is placed in extrusion die and compresses；4) extrusion die for being extruded with capacitor core high temperature is placed on to dry
In case, so that the silver paste of semi-solid preparation and the elargol of lamination coating are solidified.
2. the production method of low ESR lamination solid-state aluminum electrolytic capacitor according to claim 1, it is characterised in that: will be electric
After appearance fuse is solidified, it is put into encapsulating mould and carries out resin-encapsulated, and carry out burn-in test.
3. the production method of low ESR lamination solid-state aluminum electrolytic capacitor according to claim 1, it is characterised in that: described
Extrusion die includes upper holder block, lower lock block, limit for height piece, residual plate and fastening screw, and limit for height piece two sides are respectively arranged with
Briquetting and lower lock block are provided with residual plate, are also provided between the limit for height piece and lower lock block between the limit for height piece and upper holder block
There is residual plate；The fastening screw is arranged on upper holder block, and passes through two pieces of residual plates and limit for height piece for upper holder block and pushing
Block links together.
4. the production method of low ESR lamination solid-state aluminum electrolytic capacitor according to claim 3, it is characterised in that: described
Upper holder block and lower lock block are made by stainless steel, and limit for height piece is the stainless steel substrates with preset thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710528416.4A CN107316747B (en) | 2017-07-01 | 2017-07-01 | The production method of low ESR lamination solid-state aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710528416.4A CN107316747B (en) | 2017-07-01 | 2017-07-01 | The production method of low ESR lamination solid-state aluminum electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107316747A CN107316747A (en) | 2017-11-03 |
| CN107316747B true CN107316747B (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710528416.4A Active CN107316747B (en) | 2017-07-01 | 2017-07-01 | The production method of low ESR lamination solid-state aluminum electrolytic capacitor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113990664B (en) * | 2020-07-27 | 2023-03-21 | 深圳市柏瑞凯电子科技股份有限公司 | Manufacturing method of laminated chip type solid aluminum electrolytic capacitor |
| CN114171322B (en) * | 2020-09-11 | 2023-06-30 | 丰宾电子科技股份有限公司 | Lamination pressing method for solid electrolyte aluminum electrolytic capacitor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614725A (en) * | 2004-12-07 | 2005-05-11 | 宁夏星日电子股份有限公司 | Producing method for solid niobium capacitor |
| CN1649053A (en) * | 2005-02-05 | 2005-08-03 | 西安交通大学 | Method for producing solid sheet type electrolytic capacitor |
| CN101350253A (en) * | 2008-09-17 | 2009-01-21 | 中国振华（集团）新云电子元器件有限责任公司 | Solid electrolyte capacitor with ultra-low equivalent series resistance and manufacturing method thereof |
| CN201340806Y (en) * | 2008-11-21 | 2009-11-04 | 福建国光电子科技股份有限公司 | Solid electrolytic capacitor of cathode layer containing silver |
-
2017
- 2017-07-01 CN CN201710528416.4A patent/CN107316747B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614725A (en) * | 2004-12-07 | 2005-05-11 | 宁夏星日电子股份有限公司 | Producing method for solid niobium capacitor |
| CN1649053A (en) * | 2005-02-05 | 2005-08-03 | 西安交通大学 | Method for producing solid sheet type electrolytic capacitor |
| CN101350253A (en) * | 2008-09-17 | 2009-01-21 | 中国振华（集团）新云电子元器件有限责任公司 | Solid electrolyte capacitor with ultra-low equivalent series resistance and manufacturing method thereof |
| CN201340806Y (en) * | 2008-11-21 | 2009-11-04 | 福建国光电子科技股份有限公司 | Solid electrolytic capacitor of cathode layer containing silver |
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| Publication number | Publication date |
|---|---|
| CN107316747A (en) | 2017-11-03 |
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