CN107331519B - A kind of manufacturing method of solid-state capacitor - Google Patents
A kind of manufacturing method of solid-state capacitor Download PDFInfo
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- CN107331519B CN107331519B CN201710685782.0A CN201710685782A CN107331519B CN 107331519 B CN107331519 B CN 107331519B CN 201710685782 A CN201710685782 A CN 201710685782A CN 107331519 B CN107331519 B CN 107331519B
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- core packet
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- out tablet
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- lead
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- 239000003990 capacitor Substances 0.000 title claims abstract description 50
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000011888 foil Substances 0.000 claims abstract description 58
- 239000000126 substance Substances 0.000 claims abstract description 36
- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 21
- 230000032683 aging Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 7
- 238000005538 encapsulation Methods 0.000 claims abstract description 5
- 238000005470 impregnation Methods 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 22
- 239000007800 oxidant agent Substances 0.000 claims description 16
- 230000001590 oxidative effect Effects 0.000 claims description 16
- 239000012212 insulator Substances 0.000 claims description 15
- 239000000178 monomer Substances 0.000 claims description 14
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical group C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 240000000907 Musa textilis Species 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 229930192474 thiophene Natural products 0.000 claims description 3
- FLDCSPABIQBYKP-UHFFFAOYSA-N 5-chloro-1,2-dimethylbenzimidazole Chemical compound ClC1=CC=C2N(C)C(C)=NC2=C1 FLDCSPABIQBYKP-UHFFFAOYSA-N 0.000 claims description 2
- 239000001741 Ammonium adipate Substances 0.000 claims description 2
- 235000019293 ammonium adipate Nutrition 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 238000002386 leaching Methods 0.000 claims description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical group CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 2
- 229950004288 tosilate Drugs 0.000 claims description 2
- 238000002242 deionisation method Methods 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 10
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 9
- 229920001568 phenolic resin Polymers 0.000 description 9
- 239000005011 phenolic resin Substances 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- -1 phenolic aldehyde Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel 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
- H01G9/004—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
- H01G9/004—Details
- H01G9/008—Terminals
- H01G9/012—Terminals specially adapted for solid 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)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The present invention relates to a kind of manufacturing methods of solid-state capacitor, the solid-state capacitor includes aluminum hull, if core packet, cover board, positive terminal, negative terminal, positive pole lead-out tablet, cathode lead-out tablet, the manufacturing method includes the winding core packet step successively carried out, carburising step, it is melted into step, it is impregnated with step, heat polymerization procedure, encapsulation step and Aging Step, the winding core packet step are as follows: with electrolysis folder with cathode foil and anode foil, it is rolled into core packet, wherein positive pole lead-out tablet, one end of cathode lead-out tablet is connected with cathode foil and anode foil respectively, the other end is free end；It is melted into step are as follows: core packet is put into electrolytic bath, while being respectively electrically connected the free end of positive pole lead-out tablet and cathode lead-out tablet with the anode of chemical conversion power supply and cathode using fixture, cathode foil and anode foil energization when chemical conversion, while to core packet.The present invention can not only reduce the series equivalent resistance of capacitor, and small with the size fluctuating range of the ESR value of batch capacitor, and the homogeneity of product is good.
Description
Technical field
The present invention relates to technical field of electrolytic, in particular to a kind of manufacturing method of solid-state capacitor.
Background technique
Solid electrolytic capacitor compares more common wet electrolytic capacitors, and electrical property is very prominent, has equivalent series
Resistance (ESR) is low, resistance to ripple current height, long service life, steady performance.As the continuous upgrading of electronic product is changed
The continuous improvement of generation, function and performance, also higher and higher to the high frequency characteristics requirement of capacitor, people make different installations
Mode realizes different installation requirements, while also reducing the equivalent series resistance of solid electrolytic capacitor by all means
(ESR), to meet the high frequency characteristics of capacitor.
Currently, the manufacturing method of solid-state capacitor includes the steps that the winding successively carried out forms core packet, carburising step is right
Core packet carries out the chemical conversion step of chemical conversion repair process, is impregnated with monomer step, is impregnated with oxidant step, heats polymerization procedure, encapsulation
Step and Aging Step, wherein chemical conversion step be also it is very important, the result of chemical conversion directly affects the ESR of capacitor
Value.
However, in the prior art, the chemical conversion step used includes: to be arranged closely in multiple core packets on posting frame simultaneously
Form multiple core packets row, and make each core packet arrange in the positive pole lead-out tablet wrapped of each core be arranged in a row, then with clamping plate by institute
The free end for stating row's positive pole lead-out tablet is clamped, and finally carrier is put into the electrolytic bath equipped with forming liquid, and clamping plate connects power supply
Anode, power-up are melted into, and the clamping plate includes a pair of of the ing jaw body being made of phenolic resin and is set to a pair of of clamping plate sheet
For clamping the aluminium strip of positive pole lead-out tablet on the inner surface of body.
It according to above-mentioned chemical synthesizing method, finds in actual operation: this that forming liquid is passed through into transmitting frame or electrolytic bath phase
The formation regime for being connected to become cathode has a fatal problem, is exactly after cathode foil connects voltage, although between anode foil
It is separated with electrolytic paper, but since forming liquid has certain resistance value, there is certain pressure drop in a liquid, such anode foil will necessarily be held
Certain voltage value is carried on a shoulder pole, since the pressure resistance of cathode is very low, after bearing voltage, the functional layer on surface has a degree of damage,
After especially positive and negative foil is jagged, the voltage being applied in anode foil is higher, and anode foil is destroyed more serious.The result meeting of destruction
The raising of ESR series equivalent resistance is shown as, and the big minor swing of ESR value is larger, product homogeneity is bad, and bad rate is higher.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a kind of improved solid-state capacitor
Manufacturing method, the series equivalent resistance of capacitor, and the big small echo of the ESR value with batch capacitor can not only be reduced
Dynamic amplitude is small, and the homogeneity of product is good, fraction defective decline.
In order to solve the above technical problems, a kind of technical solution that the present invention takes is:
A kind of manufacturing method of solid-state capacitor, the solid-state capacitor include aluminum hull, the core packet being set in aluminum hull, setting
Cover board, the positive terminal, negative terminal, positive pole lead-out tablet, cathode lead-out tablet being tightly connected at the top of core packet and with aluminum hull, wherein
Core packet includes cathode foil, anode foil, the electrolytic paper and polymer dielectric being arranged between cathode foil and anode foil, the manufacture
Method includes the winding core packet step successively carried out, carburising step, chemical conversion step, impregnation step, heating polymerization procedure, encapsulation step
Rapid and Aging Step, the winding core packet step are as follows: with electrolysis folder with cathode foil and anode foil, core packet is rolled into, wherein anode
Lead-out tablet, cathode lead-out tablet one end be connected respectively with cathode foil and anode foil, the other end is free end；It is melted into step
Are as follows: core packet is put into electrolytic bath, while using fixture respectively by the free end and chemical conversion of positive pole lead-out tablet and cathode lead-out tablet
Anode and the cathode electrical connection of power supply, cathode foil and anode foil when chemical conversion, while to core packet are powered.
Preferably, be melted into step, the setting of core packet be placed in electrolytic bath, positive pole lead-out tablet and cathode lead-out tablet from
By holding the top for being located at core packet and being arranged upward.
Preferably, the forming liquid liquid level in electrolytic bath is flushed with the upper edge of core packet.
Further, multiple core packets are divided into multiple core packet rows, and are staggered per the core packet on adjacent two core packets row
Setting.
A specific implementation according to the present invention and preferred aspect, fixture include being arranged in a one-to-one correspondence with multiple core packets row
Clamping, the clamping include cleat insulator, the positive strap positioned at cleat insulator two sides extended along core packet row's length direction
And negative strap, wherein positive strap and negative strap extend along cleat insulator length direction, positive pole lead-out tablet and
The free end of cathode lead-out tablet is electrically connected with positive strap and negative strap respectively, positive strap and negative strap point
It is not electrically connected with the anode of chemical conversion power supply and cathode.
Preferably, the material of cleat insulator is epoxy resin or silicon rubber.In this example, cleat insulator is phenolic resin plate.
It is according to the present invention another specific implementation and preferred aspect, the manufacturing method further include after being melted into step,
It is impregnated with before step, core packet is successively carried out clean in deionized water and dry step, wherein the resistivity of deionized water is not
Less than 5M Ω, water temperature is 20 DEG C~100 DEG C；Drying carries out 1~3 hour at 110~150 DEG C of temperature.
Another specific implementation according to the present invention and preferred aspect, impregnation step include impregnation monomer step and impregnation oxygen
Agent step, wherein impregnation monomer step are as follows: core packet is integrally moved in the slot for containing monomer solution and is impregnated with, the monomer
For thiophene substance；It is impregnated with oxidant step are as follows: core packet is placed in the impregnating groove for containing oxidant, is first carried out 2~10 minutes
Normal pressure impregnation, then carry out 1~4 minute vacuum impregnation, then carry out pressurization impregnation in 2~10 minutes, wherein the oxidant is
P-methyl benzenesulfonic acid or tosilate, the normal pressure, which is impregnated with, to be referred to by the interior core packet direct impregnation for normal pressure in oxidant,
The vacuum impregnation refers to that it is 70~100KPa that vacuum degree will be first evacuated to inside core packet, is then impregnated in oxidant again；
The pressurization impregnation is directed to be passed through compressed air to pressure inside core packet to be 2~4atm, is then impregnated in oxidant again.
Preferably, forming liquid is phosphate forming liquid, boric acid system forming liquid or ammonium adipate system forming liquid.
In addition, above-mentioned solid electrolytic capacitor further includes being fixed on cover board upper surface to be used for capacitor and route
The connector and be filled between the aluminum hull inner sidewall and core packet outer wall for making therebetween absolutely not that plate mutually welds
The obturator in gap.
Further, the shape of connector is ox horn capillary, weld tabs or bolt；Obturator is epoxy resin or silicon rubber.
Due to the adoption of the above technical solution, compared with the prior art, the present invention has the following advantages:
The present invention can not only reduce the series equivalent resistance of capacitor, and the size of the ESR value with batch capacitor
Fluctuating range is small, and the homogeneity of product is good, and fraction defective reduces.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the capacitor of embodiment 1；
Fig. 2 is the structural schematic diagram of Fig. 1 core packet；
Fig. 3 is Fig. 1 core packet and cover board unfolded state schematic diagram (not installing)；
Fig. 4 is the schematic top plan view of Fig. 1 cover plate；
Fig. 5 is the partial schematic diagram that 1 capacitor of embodiment is in chemical conversion step；
Fig. 6 is the schematic front view that 1 capacitor of embodiment is in chemical conversion step；
Fig. 7 is the partial schematic diagram that 1 capacitor of comparative example is in chemical conversion step；
Fig. 8 is the schematic front view that 1 capacitor of comparative example is in chemical conversion step；
Wherein: 1, aluminum hull；2, core packet；20, cathode foil；21, anode foil；22, electrolytic paper；3, cover board；30, phenolic resin plate
Layer；31, rubber layer；32, pillar；4, positive terminal；5, negative terminal；6, positive pole lead-out tablet；7, cathode lead-out tablet；8, connector
(ox horn capillary or bolt)；9, obturator；10, insulated plastic flitch；11, sebific duct；A, electrolytic bath；B, fixture；B1, clamping；b10,
Cleat insulator；B11, positive strap；B12, negative strap；12, rod is pressed from both sides.
Specific embodiment
The present invention is directed to be improved by the manufacturing method to capacitor, to realize capacitor product miniaturization and drop
The series equivalent (ESR) of low product improves the anti-ripple ability of product.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1
Refering to fig. 1 to Fig. 6, the present embodiment provides a kind of solid electrolytic capacitors comprising aluminum hull 1 is set in aluminum hull 1
Core packet 2, the top of core packet 2 is set and is tightly connected with aluminum hull 1 cover board 3, positive terminal 4, negative terminal 5, core packet 2 includes
Cathode foil 20, anode foil 21, the electrolytic paper 22 being arranged between cathode foil 20 and anode foil 21 and polymer dielectric are (in figure
It does not show).
Specifically, cover board 3 includes phenolic resin plate layer 30 and the rubber layer for being fixed at 30 upper surface of phenolic resin plate layer
31。
Further, pillar 32, core packet 2 have been downwardly extending from the lower surface of phenolic resin plate layer 30 on cover board 3
Top be formed with hole (not shown), pillar 32 inserts in the hole to compress cover board 3 and core packet 2 and connect.
In this example, above-mentioned solid electrolytic capacitor further includes positive pole lead-out tablet 6 and cathode lead-out tablet 7, positive pole lead-out tablet 6
Lower end connect with cathode foil 20, the connection of upper end and cover board 3, the lower end of cathode lead-out tablet 7 connect with anode foil 21, upper end and lid
Plate 3 connects.Positive terminal 4 and negative terminal 5 are connected at cover board 3 with positive pole lead-out tablet 6 and cathode lead-out tablet 7 respectively.
Further, the upper end of positive pole lead-out tablet 6 and cathode lead-out tablet 7 passes through rivet in (the phenolic aldehyde tree of cover board 3 respectively
Rouge plate layer 30) on.
Further, positive pole lead-out tablet 6 and cathode lead-out tablet 7 have multiple groups, multiple groups positive pole lead-out tablet 6 and the negative grade of multiple groups respectively
Lead-out tablet 7 is respectively along the radial distribution of core packet 2, and the upper end of multiple groups positive pole lead-out tablet 6 is connect with positive terminal 4, multiple groups
The upper end of cathode lead-out tablet 7 is connect with negative terminal 5.It is very suitable for being made into the capacitor of larger capacity.
Meanwhile solid electrolytic capacitor further includes being fixed on 3 upper surface of cover board to be used for capacitor and line in this example
The connector 8 and be filled between 2 outer wall of 1 inner sidewall of aluminum hull and core packet for making therebetween absolutely not that road plate mutually welds
The obturator 9 in gap.There are two effect, one is easy for the positioning (stability) of core packet 2 for the setting of the obturator 9；Second is that improving
Insulation and sealing effect.
Specifically, the shape of connector 8 is ox horn capillary, weld tabs or bolt.In this example, ox horn capillary is used.Filling
Body 9 is epoxy resin or silicon rubber.
In this example, the used formation device in chemical conversion comprising electrolytic bath a, for by the positive pole lead-out tablet of core packet 2
6 and cathode lead-out tablet 7 and the fixture b that is electrically connected of chemical conversion power supply.
Specifically, multiple core packets 2 are in chemical conversion, and it is rows of to be placed in electrolytic bath a, therefore, multiple core packet rows are formed, together
When positive pole lead-out tablet 6 and the free end of cathode lead-out tablet 7 be located at the top of core packet and be arranged upward.
Further, the core packet sequence on two neighboring core packet row is arranged, and can put several groups of cores in such electrolytic bath a more
Packet row.
Each core packet arranges a corresponding fixture b, and fixture b includes arranging the clamping b1 being arranged in a one-to-one correspondence with multiple core packets,
Clamping b1 includes the cleat insulator b10 extended along core packet row's length direction, positioned at the anode connection of the two sides cleat insulator b10
B11 and negative strap b12, wherein positive strap b11 and negative strap b12 is along cleat insulator b10 length direction
Extend, the free end of positive pole lead-out tablet 6 and cathode lead-out tablet 7 is electrically connected with positive strap b11 and negative strap b12 respectively
It connects, positive strap b11 and negative strap b12 are electrically connected with the anode of chemical conversion power supply and cathode respectively.
The material of cleat insulator b10 is epoxy resin or silicon rubber.In this example, cleat insulator b10 is phenolic resin plate.
In addition, the bottom face of aluminum hull 1 is equipped with insulated plastic flitch 10.The periphery of aluminum hull 1 is coated with insulation rubber tube 11, the glue
Pipe 11 is made of heat-shrinkage material.
The manufacturing method of solid capacitor product provided in this embodiment comprising the following steps successively carried out:
(1), it uses formation voltage for the cathode foil of 32VF, using the anode foil of capacitance infinity, in cathode foil and bears
Abaca electrolytic paper is intervened between the foil of pole and is wound into the core packet that theoretical capacity is 17670 μ F；
(2), core packet is put in container made of stainless steel, is put in the high temperature oven that temperature is 265 ± 5 DEG C and carries out carbon
Change processing；
(3), be placed on step (2) core packet is rows of in electrolytic bath, at the same by the cathode foil of each core packet of every row and
Anode foil passes through positive pole lead-out tablet respectively and free end is drawn upwards from the top of core packet and formed to cathode lead-out tablet, then passes through
Fixture by the free end of positive pole lead-out tablet and cathode lead-out tablet respectively with chemical conversion power supply anode and cathode be mutually electrically connected, then to
Forming liquid (10wt% phosphate forming liquid) is added in electrolytic bath, first impregnates 10 minutes, then simultaneously to the cathode foil of core packet and
Anode foil is powered, and under conditions of formation voltage is 32V, is melted into 40 minutes, completes chemical conversion repair process；
(4), cleaning and dry process in deionized water are successively carried out to core packet, wherein the resistivity of deionized water is not small
In 5M Ω, water temperature is 80 DEG C；Drying carries out 2 hours at 130 ± 5 DEG C of temperature；
(5), monomer impregnation is carried out to core packet, be impregnated with the time 3 minutes, specifically, it is molten that core packet is integrally moved to splendid attire monomer
It is impregnated in the slot of liquid, which is thiophene substance, and when progress monomer impregnation, and 2/3 height of core packet, which is in, contains immersion liquid
Below face；
(6), the core packet after being impregnated with monomer is dried under the conditions of 50 DEG C, the time 2 h of drying, then by core Bao Zaifang
Enter to contain in the slot of oxidant and be impregnated with, specifically first carry out normal pressure impregnation in 2~5 minutes, then carries out 1~2 minute true
Sky impregnation finally carries out pressurization impregnation in 3~6 minutes.
(7), it carries out heating polymerization, and is polymerize using four-part form, wherein first segment polymerization temperature is 40 ± 2 DEG C, when polymerization
Between be 5 hours；Second segment polymerization temperature is 62 ± 2 DEG C, and polymerization time is 2 hours；Third section polymerization temperature is 85 ± 2 DEG C, is gathered
Closing the time is 3 hours；4th section of polymerization temperature is 140 ± 2 DEG C, and polymerization time is 5 hours；
(8), core packet is connect with cover board, is then placed in aluminum hull, inject the combination of epoxy resin or silica gel or both, and
Solidification, makes to be filled with the epoxy resin and/or silica gel between aluminum hull inner sidewall and core packet outer wall, and absolutely not gap, lid
Plate includes phenolic resin plate layer and the rubber layer for being fixed at the phenolic resin plate layer upper surface, and the upper surface of cover board, which is equipped with, to be used
In the connector that capacitor is connected with wiring board, positive terminal and negative terminal are drawn with positive pole lead-out tablet and cathode respectively
Piece is connected at cover board；
(9), segmented aging process and sorting test: with 8V voltage application 20 minutes, then with 20 points of 16V voltage application
Clock, 19.2V voltage 40 minutes progress aging processs of application, 125 ± 10 DEG C of aging temperature.Aging terminates extraction 10PCS and is surveyed
Examination.As a result referring to table 1.
Table 1
Comparative example 1
The manufacturing method for the capacitor product that this example provides (in conjunction with Fig. 7 and Fig. 8) comprising following steps:
1), use formation voltage for the cathode foil of 32VF, using the anode foil of capacitance infinity, in cathode foil and cathode
Abaca electrolytic paper is intervened between foil and is wound into the core packet that theoretical capacity is 17670 μ F；
2) it, is carried out at 265 ± 5 DEG C, carbonization time is 4 hours；
3) it, is placed on step (2) core packet is rows of in electrolytic bath, while by the cathode foil of each core packet of every row and negative
Pole foil passes through positive pole lead-out tablet respectively and free end is drawn upwards from the top of core packet and formed to cathode lead-out tablet, then with folder rod
12 clamp the free end of row's positive pole lead-out tablet, and forming liquid is then added into electrolytic bath, and (10wt% ammonium dihydrogen phosphate is water-soluble
Liquid), it first impregnates 10 minutes, is then powered to the cathode foil of core packet, and under conditions of formation voltage is 32V, change 35 minutes, i.e.,
Complete the chemical conversion reparation of cathode foil；
4) after the completion of, being melted into, core packet is cleaned, and dry at 140 ± 5 DEG C of temperature, the time of drying is 1 small
When；
5) it, is impregnated with monomer, it is single that the core packet of transmitting frame and position in the inner after chemical conversion, cleaning, drying is integrally moved to splendid attire
It is impregnated with, is then dried under the conditions of 50 DEG C, the time 2 h of drying in the slot of liquid solution；
6) it, is impregnated with oxidant again, specifically uses dedicated dipping device, core packet is put into the elongated impregnation of dedicated dipping device
Slot, then carries out normal pressure impregnation in 2~5 minutes, then carries out 1~2 minute vacuum impregnation, then the pressurization carried out 2~5 minutes contains
Leaching；
7), heating polymerization, is polymerize using four-part form, and wherein first segment polymerization temperature is 38 ± 2 DEG C, and polymerization time is 6 small
When；Second segment polymerization temperature is 60 ± 2 DEG C, and polymerization time is 3 hours；Third section polymerization temperature is 85 ± 2 DEG C, and polymerization time is
3.5 hour；4th section of polymerization temperature is 140 ± 2 DEG C, and polymerization time is 2 hours；
8) it, encapsulates, core packet is connect with cover board, is then placed in aluminum hull, inject the group of epoxy resin or silica gel or both
It closes, vacuumizes, solidify under conditions of 125 ± 2 DEG C, re-inject the combination of epoxy resin or silica gel or both, vacuumize, In
Solidify under conditions of 80 DEG C, makes to be filled with epoxy resin and/or silica gel between aluminum hull inner sidewall and core packet outer wall, and absolutely not
Gap, last edge curling seal；
9), aging, by the anode connection positive pole of the capacitor after encapsulation, segmented aging process and sorting test:
With 8V voltage application 20 minutes, then with 16V voltage application 20 minutes, finally applied at progress aging in 40 minutes with 19.2V voltage
Reason, 125 ± 10 DEG C of aging temperature.Aging terminates extraction 10PCS and is tested.As a result referring to table 2.
Table 2
Therefore, it is compared by embodiment 1 and comparative example 1, it is clear that obtain, the capacitor product ESR in embodiment 1 is initial
Value compares smaller, and is evenly distributed, while ESR test value is also relatively uniform after 125 DEG C of life test 5000 hours, changes width
Degree is also small, and the homogeneity of product is more preferable.
Finally, it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Referring to embodiment, invention is explained in detail, for those skilled in the art, still can be to aforementioned
Technical solution documented by each embodiment is modified or equivalent replacement of some of the technical features, as long as at this
Within the spirit and principle of invention, any modification, equivalent replacement, improvement and so on should be included in protection model of the invention
Within enclosing.
Claims (8)
1. a kind of manufacturing method of solid-state capacitor, which includes aluminum hull, the core packet being set in the aluminum hull, sets
Cover board, the positive terminal, negative terminal, positive pole lead-out tablet, cathode set at the top of the core packet and be tightly connected with the aluminum hull
Lead-out tablet, the core packet include cathode foil, anode foil, the electrolytic paper being arranged between the cathode foil and the anode foil and
Polymer dielectric, the manufacturing method include the winding core packet step successively carried out, carburising step, chemical conversion step, impregnation
Step, heating polymerization procedure, encapsulation step and Aging Step, wherein the winding core packet step are as follows: use formation voltage for
The cathode foil of 32VF intervenes abaca electrolytic paper using the anode foil of capacitance infinity between cathode foil and anode foil
And be wound into theoretical capacity be 17670 μ F core packet, wherein one end of the positive pole lead-out tablet, cathode lead-out tablet respectively with it is described
Cathode foil is connected with anode foil, and the other end is free end；
The chemical conversion step are as follows: core packet is put into electrolytic bath, while using fixture respectively by the positive pole lead-out tablet and described
The free end of cathode lead-out tablet be electrically connected with the anode of chemical conversion power supply and cathode, when chemical conversion, while to the cathode foil of core packet with bear
Pole foil is powered, and under conditions of formation voltage is 32V, is melted into 40 minutes, completes chemical conversion repair process；
Multiple core packets are divided into multiple core packet rows, and the setting that is staggered per the core packet on adjacent two core packets row；
The fixture includes arranging the clamping being arranged in a one-to-one correspondence with multiple core packets, and the clamping includes along the core
Cleat insulator, the positive strap and negative strap positioned at the cleat insulator two sides that packet row's length direction extends, wherein
The positive strap and negative strap extends along the cleat insulator length direction, the positive pole lead-out tablet and cathode
The free end of lead-out tablet is electrically connected with the positive strap and negative strap respectively, the positive strap and cathode
Connection strap is electrically connected with the anode of the chemical conversion power supply and cathode respectively.
2. the manufacturing method of solid-state capacitor according to claim 1, it is characterised in that: in the chemical conversion step, by institute
The core packet stated, which is erect, to be placed in the electrolytic bath, and the free end of the positive pole lead-out tablet and the cathode lead-out tablet is located at institute
It states the top of core packet and is arranged upward.
3. the manufacturing method of solid-state capacitor according to claim 2, it is characterised in that: the chemical conversion in the electrolytic bath
Liquid liquid level is flushed with the upper edge of the core packet.
4. the manufacturing method of solid-state capacitor according to claim 1, it is characterised in that: the material of the cleat insulator
For epoxy resin or silicon rubber.
5. the manufacturing method of solid-state capacitor according to claim 1, it is characterised in that: the manufacturing method further include
After chemical conversion step, before impregnation step, cleaning and dry step in deionized water are successively carried out to core packet, wherein deionization
The resistivity of water is not less than 5M Ω, and water temperature is 20 DEG C~100 DEG C；Drying carries out 1~3 hour at 110~150 DEG C of temperature.
6. the manufacturing method of solid-state capacitor according to claim 1, it is characterised in that: the impregnation step includes containing
Monomer step and impregnation oxidant step are soaked, wherein impregnation monomer step are as follows: core packet is integrally moved to the slot for containing monomer solution
It is inside impregnated with, the monomer is thiophene substance；It is impregnated with oxidant step are as follows: core packet is placed in the impregnating groove for containing oxidant
It is interior, normal pressure impregnation in 2~10 minutes is first carried out, then carry out 1~4 minute vacuum impregnation, then the pressurization carried out 2~10 minutes contains
Leaching, wherein the oxidant is p-methyl benzenesulfonic acid or tosilate, and the normal pressure impregnation refers to the interior core packet for normal pressure
Direct impregnation is in oxidant, and the vacuum impregnation refers to that it is 70~100KPa that vacuum degree will be first evacuated to inside core packet, so
It is impregnated in oxidant again afterwards；The pressurization impregnation is directed to be passed through compressed air to pressure inside core packet to be 2~4atm, then
It is impregnated in oxidant again.
7. the manufacturing method of solid-state capacitor according to claim 1, it is characterised in that: the forming liquid is phosphate
At liquid, boric acid system forming liquid or ammonium adipate system forming liquid.
8. the manufacturing method of solid-state capacitor according to claim 1, it is characterised in that: the solid electrolytic capacitor
It further include being fixed on the cover board upper surface for by connector that capacitor is mutually welded with wiring board and being filled in institute
It states between aluminum hull inner sidewall and the core packet outer wall for making therebetween the obturator in absolutely not gap.
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| US11342129B2 (en) * | 2018-06-21 | 2022-05-24 | KYOCERA AVX Components Corporation | Solid electrolytic capacitor with stable electrical properties at high temperatures |
| CN112908724B (en) * | 2021-01-19 | 2023-03-10 | 上海永铭电子股份有限公司 | Super capacitor and preparation method thereof |
| CN113990666B (en) * | 2021-11-04 | 2023-02-03 | 肇庆绿宝石电子科技股份有限公司 | SMD solid capacitor and manufacturing method thereof |
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| CN101147219A (en) * | 2005-03-24 | 2008-03-19 | 昭和电工株式会社 | Solid-electrolyte capacitor manufacturing device and manufacturing method |
| CN102683047A (en) * | 2012-05-14 | 2012-09-19 | 肇庆绿宝石电子有限公司 | Preparation method of solid electrolyte aluminum electrolytic capacitor |
| CN103268823A (en) * | 2013-05-31 | 2013-08-28 | 佛山市三水日明电子有限公司 | Manufacturing method suitable for polymer solid aluminum electrolytic capacitor of alternating current circuit |
| CN204577254U (en) * | 2015-05-26 | 2015-08-19 | 佛山市三水日明电子有限公司 | A kind of solid electrolytic capacitor |
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| JP5274268B2 (en) * | 2009-01-08 | 2013-08-28 | 三洋電機株式会社 | Solid electrolytic capacitor and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147219A (en) * | 2005-03-24 | 2008-03-19 | 昭和电工株式会社 | Solid-electrolyte capacitor manufacturing device and manufacturing method |
| CN102683047A (en) * | 2012-05-14 | 2012-09-19 | 肇庆绿宝石电子有限公司 | Preparation method of solid electrolyte aluminum electrolytic capacitor |
| CN103268823A (en) * | 2013-05-31 | 2013-08-28 | 佛山市三水日明电子有限公司 | Manufacturing method suitable for polymer solid aluminum electrolytic capacitor of alternating current circuit |
| CN204577254U (en) * | 2015-05-26 | 2015-08-19 | 佛山市三水日明电子有限公司 | A kind of solid electrolytic capacitor |
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