CN108648913A - A kind of solid-state aluminum electrolytic capacitor - Google Patents
A kind of solid-state aluminum electrolytic capacitor Download PDFInfo
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- CN108648913A CN108648913A CN201810309964.2A CN201810309964A CN108648913A CN 108648913 A CN108648913 A CN 108648913A CN 201810309964 A CN201810309964 A CN 201810309964A CN 108648913 A CN108648913 A CN 108648913A
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- core packet
- foil
- solid
- core
- acid solution
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 32
- 239000003990 capacitor Substances 0.000 title claims abstract description 24
- 239000011888 foil Substances 0.000 claims abstract description 25
- 239000004952 Polyamide Substances 0.000 claims abstract description 16
- 229920002647 polyamide Polymers 0.000 claims abstract description 16
- 239000002253 acid Substances 0.000 claims abstract description 15
- 239000004642 Polyimide Substances 0.000 claims abstract description 14
- 239000005030 aluminium foil Substances 0.000 claims abstract description 14
- 229920001721 polyimide Polymers 0.000 claims abstract description 14
- 230000018044 dehydration Effects 0.000 claims abstract description 8
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 8
- 230000007547 defect Effects 0.000 claims abstract description 7
- 238000007598 dipping method Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 239000011241 protective layer Substances 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000005470 impregnation Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 238000003763 carbonization Methods 0.000 claims description 6
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 150000004985 diamines Chemical class 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 5
- 239000007800 oxidant agent Substances 0.000 claims description 5
- 238000006068 polycondensation reaction Methods 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000002798 polar solvent Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 230000002950 deficient Effects 0.000 claims description 2
- 238000002386 leaching Methods 0.000 claims description 2
- 239000012046 mixed solvent Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 238000012805 post-processing Methods 0.000 claims description 2
- 208000005156 Dehydration Diseases 0.000 claims 3
- 229910052593 corundum Inorganic materials 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- 238000009740 moulding (composite fabrication) Methods 0.000 abstract description 4
- 239000002322 conducting polymer Substances 0.000 abstract description 2
- 229920001940 conductive polymer Polymers 0.000 abstract description 2
- 235000010210 aluminium Nutrition 0.000 description 21
- 239000000243 solution Substances 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 229920005575 poly(amic acid) Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 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
- H01G9/0003—Protection against electric or thermal overload; cooling arrangements; means for avoiding the formation of cathode films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1003—Preparatory processes
- C08G73/1007—Preparatory processes from tetracarboxylic acids or derivatives and diamines
-
- 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
-
- 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
- H01G9/004—Details
- H01G9/14—Structural combinations or circuits for modifying, or compensating for, electric characteristics of 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
- H01G9/15—Solid electrolytic capacitors
- H01G9/151—Solid electrolytic capacitors with wound foil electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
A kind of solid-state aluminum electrolytic capacitor; core packet is formed by positive and negative anodes foil and electrolytic paper winding; it is riveted on positive and negative anodes foil leaded; the lead that core is wrapped passes through rubber plug hole and is stood together with aluminum hull group; wherein; growth has conducting polymer in the core packet; and the core packet aluminium foil place of cutting upper and lower surfaces of forms polyimide material dipping protective layer, the polyimide material dipping protective layer, which is immersed in by the upper and lower surface of the core packet of coiling and molding after soluble polyamide acid solution, is heated to 220~320 DEG C of dehydration formings.The present invention can effectively improve the resistance to high ripple current of product；Simultaneously can also effective protection cutting edge position defect, reduce the leakage current of product, improve the reliability of product.
Description
Technical field
The present invention relates to the preparing technical fields of solid-state capacitor, and in particular to a kind of solid-state aluminum electrolytic capacitor.
Background technology
In the prior art, the core packet of solid-state aluminum electrolytic capacitor mainly by cut after rear aluminium foil riveting lead with electrolytic paper
It winds, wherein on the cutting edge of aluminium foil, since aluminium foil is directly to cut molding, it can be caused to dismantle the aluminum substrate on side
It is exposed, defect herein is repaired using formation regime at present, to reduce the leakage current of product.
But the above-mentioned molding aluminium foil of chemical synthesizing method still remains larger defect risk, the surface of this aluminium foil passes through
The short time alundum (Al2O3) oxidation film of chemical conversion growth can not necessarily cover completely, and thickness degree differs, thus product is still
There are larger leakage current risks, and where there is cut burr, and cause capacitor occur breakdown failure it is main because
Element.
Invention content
Technical problem solved by the invention is to provide a kind of solid-state aluminum electrolytic capacitor, this solid-state alminium electrolytic condenser
Utensil has low-leakage current, high reliability, the characteristic of resistance to high ripple current to can be used to solve the defects of above-mentioned technical background.
Technical problem solved by the invention is realized using following technical scheme：
A kind of solid-state aluminum electrolytic capacitor forms core packet by positive and negative anodes foil and electrolytic paper winding, and being riveted on positive and negative anodes foil has
Lead, the lead that core is wrapped pass through rubber plug hole and are stood together with aluminum hull group, wherein growth has conducting polymer in the core packet
Object, and the core packet aluminium foil place of cutting upper and lower surfaces of forms polyimide material dipping protective layer.Wherein, the polyimides
Material dipping protective layer is heated to 220 after being immersed in soluble polyamide acid solution by the upper and lower surface of the core packet of coiling and molding
~320 DEG C of dehydration formings；And the soluble polyamide acid solution is by dianhydride and diamines in mass ratio 1:0.5~1:2 ratio
It is added in polar solvent, 3~15 DEG C of control temperature carries out low-temperature polycondensation and is made.
In the present invention, the core packet dehydration forming temperature after the completion of impregnating is preferably 300 DEG C.
In the present invention, the mass ratio that is preferably added to of dianhydride and diamines is 1 in the soluble polyamic acid:1.2.
In the present invention, the polar solvent is DMF, DMAC, one kind in NMP or THE/ methanol mixed solvents, and excellent
It is selected as DMF.
In the present invention, the temperature of the low-temperature polycondensation operation is preferably 6 DEG C.
A kind of preparation method of solid-state aluminum electrolytic capacitor, is used to prepare above-mentioned solid-state aluminum electrolytic capacitor comprising with
Lower operating procedure：
1) anode foils, Cathode Foil and electrolytic paper are cut into technique specified width, which width first, in accordance with process requirements.
2) positive guide pin is followed closely into riveting on anode aluminium foil, bears guide pin riveting on cathode aluminum foil, electrolytic paper is clipped in anode foils and the moon
Between the foil of pole, and it is wound into cylindrical core packet.
3) the core packet after the completion of winding is immersed in electrolyte and carries out energization chemical conversion, repaired electrode foil defect, make to lack
Concave portion position grows alundum (Al2O3) oxidation film.
4) the core packet after chemical conversion is subjected to carbonization treatment, electrolytic paper therein is made to be carbonized.
5) the upper and lower surface of the core packet after carbonization is contained respectively and is immersed in as above that state the prefabricated soluble polyamide acid of method molten
It in liquid, is taken out when in soluble polyamide acid solution homogeneous impregnation to core packet, thermal dehydration forms polyimide covercoat.
6) include leaching pretreating reagent by the core of step 5) processing, be then impregnated with conductive high polymer monomer and oxidant.
7) will impregnation post-processing conductive high polymer monomer and oxidizer treatment core packet will be polymerize successively, organize it is vertical after it is clear
Aluminum hull and wire surface are washed, burin-in process unit is re-fed into and carries out burin-in process, make the polymer insulation of aluminium foil rejected region
After get product solid-state aluminum electrolytic capacitor.
Advantageous effect：Solid-state aluminum electrolytic capacitor produced by the present invention is simple in structure, and preparation process is convenient and easily operated,
On the one hand its polyimide covercoat formed on the upper and lower surface of core packet, this structure can pass through polyimide covercoat
Aluminum hull contacts, and forms heat conduction path, makes the resistance to high ripple current of product, and on the other hand can be coated by polyimide covercoat
Position is cut in aluminium foil, the defective locations cut is protected using the insulation performance of polyimides, reduces the leakage current of product, with
And it reduces because burr leads to the probability of product failure, to improve the reliability of product.
Description of the drawings
Fig. 1 is the core pack arrangement schematic diagram of the solid-state aluminum electrolytic capacitor of the present invention.
Wherein：1, core packet；2, polyimide material impregnates protective layer；3, guide pin.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment and diagram are closed, the present invention is further explained.
In embodiment, it is prepared with a collection of batch 25V-470 μ F solid aluminums with structure according to the invention and preparation method
It is illustrated for electrolytic capacitor, and prepares a traditional batch 25V-470 μ F solid-states aluminium electroloysis electricity with traditional preparation methods
Container is compared as technology.
In the present embodiment, when preparing solid-state aluminum electrolytic capacitor using the structure and preparation method of the present invention, first preparing can
Soluble polyamide acid solution, when preparation, by dianhydride and diamines in mass ratio 1:1.2 ratio is added in DMF solvent, controls temperature
6 DEG C carry out low-temperature polycondensation and are made.
Anode foils, Cathode Foil and electrolytic paper will be cut into technique specified width, which width according to process requirements, then by positive guide pin
Riveting is followed closely on anode aluminium foil, bears guide pin riveting on cathode aluminum foil, electrolytic paper electrolytic paper is clipped between anode foils and Cathode Foil, and is rolled up
It is coiled into cylinder, core packet after the completion of winding immersed in electrolyte to be powered to operating carrying out chemical conversion and repairs electrode
Foil defect makes rejected region grow alundum (Al2O3) oxidation film, and when chemical conversion operates, power-on voltage is the proof voltage of anode foils；
Electrolyte is the aqueous solution of ammonium dihydrogen phosphate, mass fraction 0.6%；2h is dried after chemical conversion under the conditions of 150 DEG C；It will
Core packet after chemical conversion is dry carries out carbonization treatment, and electrolytic paper therein is made to be carbonized.
Then the upper and lower surface of the core packet after progress electrolytic paper carbonization treatment is contained respectively and is immersed in prefabricated soluble polyamides
It in amino acid solution, is taken out when in soluble polyamide acid solution homogeneous impregnation to core packet, is heated to 300 DEG C of dehydration formings, with
Polyimide covercoat is formed on the upper and lower surface of core packet, molding structure is as shown in Figure 1.Then, above-mentioned core packet is immersed single
Be impregnated in body ethanol solution, 2~3min be impregnated with first under normal temperature and pressure conditions, then dry 1 under the conditions of 50~60 DEG C~
2h completes impregnation operation；The core packet after monomer ethanol solution will be impregnated with to immerse in oxidizing agent solution, air pressure -80~-
It is put into baking oven and is polymerize after 8~10min of impregnation under 30kPa vacuum conditions, the core packet after polymerization is sealed in rubber stopper
Aluminum hull in aging, control 105 DEG C of aging temperature, Ya≤1.2 times Laoization electricity operating voltage, in total 120~130min of aging be
Obtain finished solid aluminium electrolutic capacitor.
Solid capacitor prepared by the above method is gone out with random sampling in conventionally produced different batches of product out
It is as shown in the table to measure the two data comparison for 10 individual cells：
1 25V-470 μ F products of the present invention of table prepare the unit for electrical property parameters of product with traditional handicraft
It is above-mentioned statistics indicate that, properties of product made of present invention process comprehensively be better than traditional handicraft made of product, and produce
Product consistency will be much better than traditional handicraft, and performance is more stablized, and yield rate higher, leakage current value are lower.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of soluble polyamide acid solution, which is used for the core bound edge of solid-state aluminum electrolytic capacitor
Edge cutting edge processing, which is characterized in that the soluble polyamide acid solution is by dianhydride and diamines in mass ratio 1:0.5~1:2
Ratio is added in polar solvent, and 3~15 DEG C of control temperature carries out low-temperature polycondensation and is made.
2. soluble polyamide acid solution according to claim 1, which is characterized in that the addition mass ratio of dianhydride and diamines
Example is 1:1.2.
3. soluble polyamide acid solution according to claim 1, which is characterized in that the polar solvent is DMF,
One kind in DMAC, NMP or THE/ methanol mixed solvent.
4. soluble polyamide acid solution according to claim 1, which is characterized in that the temperature of the low-temperature polycondensation operation
It is 6 DEG C.
5. a kind of solid-state aluminum electrolytic capacitor, which is characterized in that form core packet, positive and negative anodes foil by positive and negative anodes foil and electrolytic paper winding
Upper riveting is leaded, and the lead that core is wrapped passes through rubber plug hole and stood together with aluminum hull group, wherein growth is led in the core packet
Electric polymer, and the core packet aluminium foil place of cutting upper and lower surfaces of forms polyimide material dipping protective layer, the polyimides
Material impregnates protective layer using any soluble polyamide acid solution in Claims 1 to 4 as dipping solution, will wind
The upper and lower surface of molding core packet is immersed in the dipping solution takes out after homogeneous impregnation, is heated to 220~320 DEG C of dehydrations
Molding.
6. solid-state aluminum electrolytic capacitor according to claim 5, which is characterized in that the core packet dehydration forming temperature after the completion of impregnating
Degree is 300 DEG C.
7. a kind of preparation method preparing solid-state aluminum electrolytic capacitor, which is characterized in that the preparation method is used to prepare with power
Profit requires the solid-state aluminum electrolytic capacitor of 5 technical characteristic, concrete operation step to be：
1) anode foils, Cathode Foil and electrolytic paper are cut into technique specified width, which width first, in accordance with process requirements；
2) positive guide pin is followed closely into riveting on anode aluminium foil, bears guide pin riveting on cathode aluminum foil, electrolytic paper is clipped in anode foils and Cathode Foil
Between, and it is wound into cylindrical core packet；
3) the core packet after the completion of winding is immersed in electrolyte and carries out energization chemical conversion, repaired electrode foil defect, make defective part
Position growth alundum (Al2O3) oxidation film；
4) the core packet after chemical conversion is subjected to carbonization treatment, electrolytic paper therein is made to be carbonized；
5) the upper and lower surface of the core packet after carbonization is contained to be immersed in respectively and as above states the prefabricated soluble polyamide acid solution of method
In, it is taken out when in soluble polyamide acid solution homogeneous impregnation to core packet, thermal dehydration forms polyimide covercoat；
6) include leaching pretreating reagent by the core of step 5) processing, be then impregnated with conductive high polymer monomer and oxidant；
7) will impregnation post-processing conductive high polymer monomer and oxidizer treatment core packet will be polymerize successively, organize it is vertical after clean aluminium
Shell and wire surface are re-fed into burin-in process unit and carry out burin-in process, make after the polymer insulation of aluminium foil rejected region i.e.
Obtain finished solid aluminium electrolutic capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810309964.2A CN108648913B (en) | 2018-04-09 | 2018-04-09 | Solid-state aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810309964.2A CN108648913B (en) | 2018-04-09 | 2018-04-09 | Solid-state aluminum electrolytic capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN108648913A true CN108648913A (en) | 2018-10-12 |
| CN108648913B CN108648913B (en) | 2020-01-21 |
Family
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|---|---|---|---|
| CN201810309964.2A Active CN108648913B (en) | 2018-04-09 | 2018-04-09 | Solid-state aluminum electrolytic capacitor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659139A (en) * | 2019-01-15 | 2019-04-19 | 深圳江浩电子有限公司 | Solid electrolytic capacitor and preparation method thereof |
| CN109712813A (en) * | 2018-12-13 | 2019-05-03 | 益阳市万京源电子有限公司 | Comprehensive high molecular aluminium electrolytic capacitor is with helping carbon agent and its application method |
| CN109727777A (en) * | 2018-12-13 | 2019-05-07 | 益阳市万京源电子有限公司 | The preparation method of comprehensive high molecular aluminium electrolytic capacitor |
| CN110676055A (en) * | 2019-10-15 | 2020-01-10 | 厦门法拉和信电子有限公司 | Two-step impregnation preparation method of hybrid aluminum electrolytic capacitor |
| CN110676058A (en) * | 2019-08-08 | 2020-01-10 | 益阳艾华富贤电子有限公司 | Preparation process of solid-state aluminum electrolytic capacitor and solid-state aluminum electrolytic capacitor |
| CN110993354A (en) * | 2019-12-02 | 2020-04-10 | 湖南艾华集团股份有限公司 | Manufacturing method of solid-state aluminum electrolytic capacitor |
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| CN110676058B (en) * | 2019-08-08 | 2021-10-08 | 益阳艾华富贤电子有限公司 | Preparation process of solid-state aluminum electrolytic capacitor and solid-state aluminum electrolytic capacitor |
| CN110676055A (en) * | 2019-10-15 | 2020-01-10 | 厦门法拉和信电子有限公司 | Two-step impregnation preparation method of hybrid aluminum electrolytic capacitor |
| CN110993354A (en) * | 2019-12-02 | 2020-04-10 | 湖南艾华集团股份有限公司 | Manufacturing method of solid-state aluminum electrolytic capacitor |
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