CN112509814A - High-temperature and high-humidity resistant laminated aluminum solid-state capacitor and preparation method thereof - Google Patents
High-temperature and high-humidity resistant laminated aluminum solid-state capacitor and preparation method thereof Download PDFInfo
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- CN112509814A CN112509814A CN202011253545.5A CN202011253545A CN112509814A CN 112509814 A CN112509814 A CN 112509814A CN 202011253545 A CN202011253545 A CN 202011253545A CN 112509814 A CN112509814 A CN 112509814A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G9/022—Electrolytes; Absorbents
- H01G9/025—Solid electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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Abstract
The invention discloses a high-temperature and high-humidity resistant laminated aluminum solid capacitor and a preparation method thereof, wherein the capacitor comprises a shell with an accommodating space, an inner core is fixedly arranged in the accommodating space of the shell, a negative guide pin and a positive guide pin are fixedly connected with the inner core, one sides of the negative guide pin and the positive guide pin, which are far away from the inner core, penetrate through the shell and are positioned at the outer side of the shell, a humidity resistant layer and a high-temperature resistant layer are sequentially arranged between the inner core and the inner wall of the shell from inside to outside, one side of the humidity resistant layer, which is close to the high-temperature resistant layer, extends outwards to form a plurality of uniformly distributed buffer columns, a plurality of uniformly distributed buffer grooves are formed in the high-temperature resistant layer, rubber is fixedly arranged in the shell and is positioned at one side of the negative guide pin of. The laminated aluminum solid capacitor prepared by the invention has good high-temperature and high-humidity resistance.
Description
Technical Field
The invention relates to the technical field of capacitors, in particular to a high-temperature and high-humidity resistant laminated aluminum solid capacitor and a preparation method thereof.
Background
The capacitor is formed by two electrodes and a dielectric material therebetween. The dielectric material is a dielectric medium, when placed in an electric field between two parallel plates with equal amounts of opposite charges, polarization charges are generated on the surface of the dielectric medium due to polarization, and accordingly charges bound to the plates are increased correspondingly, and the potential difference between the plates is maintained constant.
Laminated aluminum solid state capacitor who uses in the existing market, at the in-process of work use, heat resistance is relatively poor, and long-time work can produce the piling up of heat, and accelerating capacitor's ageing reduces the life of condenser, and compressive property is also lower, and traditional laminated aluminum solid state capacitor receives humid gas's erosion easily moreover, causes the insulating quality variation of condenser, reduces safe in utilization.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides the high-temperature and high-humidity resistant laminated aluminum solid capacitor and the preparation method thereof, and the laminated aluminum solid capacitor has good high-temperature and high-humidity resistance.
The invention provides a high-temperature and high-humidity resistant laminated aluminum solid capacitor, which comprises a shell with an accommodating space, wherein an inner core is fixedly arranged in the accommodating space of the shell, the inner core is fixedly connected with a negative guide pin and a positive guide pin, one sides of the negative guide pin and the positive guide pin, which are far away from the inner core, penetrate through the shell and are positioned on the outer side of the shell, a humidity resistant layer and a high-temperature resistant layer are sequentially arranged between the inner core and the inner wall of the shell from inside to outside, one side of the humidity resistant layer, which is close to the high-temperature resistant layer, extends outwards to form a plurality of buffer columns which are uniformly distributed, a plurality of buffer grooves which are uniformly distributed are formed in the high-temperature resistant layer, rubber is fixedly arranged in the shell and is positioned on one side of the negative.
Preferably, the inner core includes first aluminium foil, first electrolytic paper, second aluminium foil and second electrolytic paper from inside to outside in proper order, the second electrolytic paper outside is still bonded with and is used for fixing the sticky tape of second electrolytic paper, first aluminium foil and second aluminium foil fixedly connected with burden guide pin and positive guide pin respectively.
The method for preparing the high-temperature and high-humidity resistant laminated aluminum solid-state capacitor comprises the following steps:
s1: preparing a first aluminum foil and a second aluminum foil;
s2: preparing first electrolytic paper and second electrolytic paper;
s3: selecting a first aluminum foil and a second aluminum foil in S1 and a first electrolytic paper and a second electrolytic paper in S2, wherein the first aluminum foil, the first electrolytic paper, the second aluminum foil and the second electrolytic paper are distributed from inside to outside and are stacked to form an inner core of the capacitor, winding the inner core into a cylinder, and bonding adhesive tapes on the outer side of the second electrolytic paper to fix the inner core;
s4: cooling the inner core fixed in S3 at-28- -22 deg.C for 40-50 min;
s5: and placing the inner core, the moisture-resistant layer and the high-temperature-resistant layer into the cylindrical shell at one time, pressing rubber into one side of the positive guide pin of the inner core, and finally sealing the shell.
Preferably, the method for preparing the first electrolytic paper and the second electrolytic paper comprises the following steps:
s21: preparation of the nanofiber layer
Adding wood pulp and water into a pulping machine for pulping, then adding kapok fiber and alumina nano fiber into the pulped solution, stirring uniformly, adding into a pulp extruding machine for composite extrusion, and then drying;
s22: preparation of high-pressure-resistant fiber layer
Adding wood pulp and water into a pulping machine for pulping, then adding kapok fiber, glass fiber and tencel fiber into the pulped solution, stirring uniformly, then adding polyester fiber and polyamide fiber, stirring uniformly again, adding into a pulp extruding machine for composite extrusion, and then drying;
s23: compounding
And coating the dried high-voltage-resistance fiber layer, wherein the coating liquid is PVA coating liquid, and compounding the high-voltage-resistance fiber layer on the upper surface and the lower surface of the nanofiber layer after coating.
Preferably, the nanofiber layer comprises the following raw materials in parts by weight: 100-120 parts of wood pulp, 1000 parts of water, 40-60 parts of kapok fiber and 15-25 parts of alumina nano fiber.
Preferably, the high pressure resistant fiber layer comprises the following raw materials in parts by weight: 100-120 parts of wood pulp, 1000 parts of water, 40-60 parts of kapok fiber, 20-40 parts of glass fiber, 15-25 parts of tencel fiber, 5-10 parts of polyester fiber and 5-10 parts of polyamide fiber.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) this application is provided with wet layer and high temperature resistant layer between casing and inner core, can play fine heat dissipation and waterproof effect, still be provided with rubber in the casing, can enough improve the resistance to compression effect of condenser and can play certain water-proof effects again, the buffering post that sets up on the wet layer can play certain buffering effect, and the clearance that forms between its and the high temperature resistant layer can further improve thermal scattering and disappearing, thereby guarantee life under the high temperature operating condition, the dashpot seted up in the same high temperature resistant layer has resistance to compression and radiating effect.
(2) Glass fiber and tencel fiber have been added to first electrolytic paper and the second electrolytic paper of this application, and it has certain synergism on the resistance to compression and the high temperature resistance that improve the condenser to guarantee that the condenser of this application preparation has better resistance to compression and that high temperature resistance.
Drawings
Fig. 1 is a schematic structural view of an inner core according to the present invention;
fig. 2 is a schematic structural diagram of an aluminum electrolytic capacitor according to the present invention.
In the figure: 1-negative guide pin, 2-positive guide pin, 3-first aluminum foil, 4-first electrolytic paper, 5-second aluminum foil, 6-second electrolytic paper, 7-adhesive tape, 8-inner core, 9-buffer column, 10-moisture-resistant layer, 11-buffer groove, 12-high temperature-resistant layer, 13-shell and 14-rubber.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Referring to fig. 1-2, the laminated aluminum solid-state capacitor resistant to high temperature and high humidity provided by the invention comprises a housing 13 having an accommodating space, wherein an inner core 8 is fixedly arranged in the accommodating space of the housing 13, the inner core 8 is fixedly connected with a negative guide pin 1 and a positive guide pin 2, one sides of the negative guide pin 1 and the positive guide pin 2, which are far away from the inner core 8, penetrate through the housing 13 and are located at the outer side of the housing 13, a moisture-resistant layer 10 and a high-temperature-resistant layer 12 are sequentially arranged between the inner core 8 and the inner wall of the housing 13 from inside to outside, one side of the moisture-resistant layer 10, which is close to the high-temperature-resistant layer 12, extends outwards to form a plurality of buffer columns 9 uniformly distributed, a plurality of buffer grooves 11 uniformly distributed are formed in the high-temperature-resistant layer 12, a rubber 14 is further fixedly arranged in the housing 13, and the rubber 14 is located at.
The inner core 8 includes first aluminium foil 3, first electrolytic paper 4, second aluminium foil 5 and second electrolytic paper 6 from inside to outside in proper order, 6 outsides of second electrolytic paper are still bonded and are used for fixing the sticky tape 7 of second electrolytic paper 6, first aluminium foil 3 and second aluminium foil 5 fixedly connected with burden guide pin 1 respectively and positive guide pin 2.
This application is provided with wet layer and high temperature resistant layer between casing and inner core, can play fine heat dissipation and waterproof effect, still be provided with rubber in the casing, can enough improve the resistance to compression effect of condenser and can play certain water-proof effects again, the buffering post that sets up on the wet layer can play certain buffering effect, and the clearance that forms between its and the high temperature resistant layer can further improve thermal scattering and disappearing, thereby guarantee life under the high temperature operating condition, the dashpot seted up in the same high temperature resistant layer has resistance to compression and radiating effect.
The method for preparing the high-temperature and high-humidity resistant laminated aluminum solid-state capacitor comprises the following steps:
s1: preparing a first aluminum foil and a second aluminum foil;
s2: preparing first electrolytic paper and second electrolytic paper;
s3: selecting a first aluminum foil and a second aluminum foil in S1 and a first electrolytic paper and a second electrolytic paper in S2, wherein the first aluminum foil, the first electrolytic paper, the second aluminum foil and the second electrolytic paper are distributed from inside to outside and are stacked to form an inner core of the capacitor, winding the inner core into a cylinder, and bonding adhesive tapes on the outer side of the second electrolytic paper to fix the inner core;
s4: cooling the inner core fixed in the S3 at-25 ℃ for 45 min;
s5: and placing the inner core, the moisture-resistant layer and the high-temperature-resistant layer into the cylindrical shell at one time, pressing rubber into one side of the positive guide pin of the inner core, and finally sealing the shell.
The method for preparing the first electrolytic paper and the second electrolytic paper comprises the following steps:
s21: preparation of the nanofiber layer
Adding wood pulp and water into a pulping machine for pulping, then adding kapok fiber and alumina nano fiber into the pulped solution, stirring uniformly, adding into a pulp extruding machine for composite extrusion, and then drying;
s22: preparation of high-pressure-resistant fiber layer
Adding wood pulp and water into a pulping machine for pulping, then adding kapok fiber, glass fiber and tencel fiber into the pulped solution, stirring uniformly, then adding polyester fiber and polyamide fiber, stirring uniformly again, adding into a pulp extruding machine for composite extrusion, and then drying;
s23: compounding
And coating the dried high-voltage-resistance fiber layer, wherein the coating liquid is PVA coating liquid, and compounding the high-voltage-resistance fiber layer on the upper surface and the lower surface of the nanofiber layer after coating.
Example 1
The nanofiber layer comprises the following raw materials in parts by weight: 100 parts of wood pulp, 1000 parts of water, 40 parts of kapok fiber and 15 parts of alumina nano fiber.
The high-pressure-resistant fiber layer comprises the following raw materials in parts by weight: 100 parts of wood pulp, 1000 parts of water, 40 parts of kapok fiber, 20 parts of glass fiber, 15 parts of tencel fiber, 5 parts of polyester fiber and 5 parts of polyamide fiber.
Under the temperature environment of 125 ℃, the same ripple current is applied to the aluminum electrolytic capacitor, and the temperature rises by 16 ℃.
Example 2
The nanofiber layer comprises the following raw materials in parts by weight: 120 parts of wood pulp, 1000 parts of water, 60 parts of kapok fiber and 25 parts of alumina nano fiber.
The high-pressure-resistant fiber layer comprises the following raw materials in parts by weight: 120 parts of wood pulp, 1000 parts of water, 60 parts of kapok fiber, 40 parts of glass fiber, 25 parts of tencel fiber, 10 parts of polyester fiber and 10 parts of polyamide fiber.
Under the temperature environment of 125 ℃, the same ripple current is applied to the aluminum electrolytic capacitor, and the temperature rises by 18 ℃.
Example 3
The nanofiber layer comprises the following raw materials in parts by weight: 110 parts of wood pulp, 1000 parts of water, 50 parts of kapok fiber and 20 parts of alumina nano fiber.
The high-pressure-resistant fiber layer comprises the following raw materials in parts by weight: 110 parts of wood pulp, 1000 parts of water, 50 parts of kapok fiber, 30 parts of glass fiber, 20 parts of tencel fiber, 8 parts of polyester fiber and 8 parts of polyamide fiber.
Under the temperature environment of 125 ℃, the same ripple current is applied to the aluminum electrolytic capacitor, and the temperature rises by 15 ℃.
Comparative example 1
The nanofiber layer comprises the following raw materials in parts by weight: 110 parts of wood pulp, 1000 parts of water, 50 parts of kapok fiber and 20 parts of alumina nano fiber.
The high-pressure-resistant fiber layer comprises the following raw materials in parts by weight: 110 parts of wood pulp, 1000 parts of water, 50 parts of kapok fiber, 50 parts of glass fiber, 8 parts of polyester fiber and 8 parts of polyamide fiber.
Under the temperature environment of 125 ℃, the same ripple current is applied to the aluminum electrolytic capacitor, and the temperature rises by 28 ℃.
Comparative example 2
The nanofiber layer comprises the following raw materials in parts by weight: 110 parts of wood pulp, 1000 parts of water, 50 parts of kapok fiber and 20 parts of alumina nano fiber.
The high-pressure-resistant fiber layer comprises the following raw materials in parts by weight: 110 parts of wood pulp, 1000 parts of water, 50 parts of kapok fiber, 50 parts of tencel fiber, 8 parts of polyester fiber and 8 parts of polyamide fiber.
Under the temperature environment of 125 ℃, the same ripple current is applied to the aluminum electrolytic capacitor, and the temperature rise is 31 ℃.
From the data of example 3 and comparative examples 1-2, it can be seen that the glass fiber and tencel fiber added in the present application have a certain synergistic effect on improving the high temperature resistance of the aluminum solid state capacitor.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. High temperature and high humidity resistant stromatolite aluminium solid state capacitor, its characterized in that, including the casing that has an accommodation space, the accommodation space internal fixation of casing is equipped with the inner core, inner core fixedly connected with burden guide pin and positive guide pin, burden guide pin and positive guide pin are kept away from one side of inner core all runs through the casing is located the outside of casing, the inner core with from interior to being equipped with in proper order wet layer and high temperature resistant layer outward between the inner wall of casing, wet layer is close to one side on high temperature resistant layer outwards extends there are a plurality of evenly distributed cushion columns, it has a plurality of evenly distributed's dashpot to open in the high temperature resistant layer, still the fixed rubber that is equipped with in the casing, rubber is located negative guide pin one side of inner core.
2. The laminated aluminum solid-state capacitor with high temperature and high humidity resistance of claim 1, wherein the inner core sequentially comprises a first aluminum foil, a first electrolytic paper, a second aluminum foil and a second electrolytic paper from inside to outside, an adhesive tape for fixing the second electrolytic paper is further bonded on the outer side of the second electrolytic paper, and the first aluminum foil and the second aluminum foil are fixedly connected with a negative guide pin and a positive guide pin respectively.
3. A method for manufacturing a laminated aluminum solid state capacitor resistant to high temperature and high humidity according to claim 1 or 2, characterized by the following steps:
s1: preparing a first aluminum foil and a second aluminum foil;
s2: preparing first electrolytic paper and second electrolytic paper;
s3: selecting a first aluminum foil and a second aluminum foil in S1 and a first electrolytic paper and a second electrolytic paper in S2, wherein the first aluminum foil, the first electrolytic paper, the second aluminum foil and the second electrolytic paper are distributed from inside to outside and are stacked to form an inner core of the capacitor, winding the inner core into a cylinder, and bonding adhesive tapes on the outer side of the second electrolytic paper to fix the inner core;
s4: cooling the inner core fixed in S3 at-28- -22 deg.C for 40-50 min;
s5: and placing the inner core, the moisture-resistant layer and the high-temperature-resistant layer into the cylindrical shell at one time, pressing rubber into one side of the positive guide pin of the inner core, and finally sealing the shell.
4. The method for manufacturing a laminated aluminum solid state capacitor resistant to high temperature and high humidity according to claim 1, wherein the method steps for manufacturing the first electrolytic paper and the second electrolytic paper are as follows:
s21: preparation of the nanofiber layer
Adding wood pulp and water into a pulping machine for pulping, then adding kapok fiber and alumina nano fiber into the pulped solution, stirring uniformly, adding into a pulp extruding machine for composite extrusion, and then drying;
s22: preparation of high-pressure-resistant fiber layer
Adding wood pulp and water into a pulping machine for pulping, then adding kapok fiber, glass fiber and tencel fiber into the pulped solution, stirring uniformly, then adding polyester fiber and polyamide fiber, stirring uniformly again, adding into a pulp extruding machine for composite extrusion, and then drying;
s23: compounding
And coating the dried high-voltage-resistance fiber layer, wherein the coating liquid is PVA coating liquid, and compounding the high-voltage-resistance fiber layer on the upper surface and the lower surface of the nanofiber layer after coating.
5. The method for manufacturing a laminated aluminum solid state capacitor resistant to high temperature and high humidity according to claim 4, wherein the nanofiber layer comprises the following raw materials in parts by weight: 100-120 parts of wood pulp, 1000 parts of water, 40-60 parts of kapok fiber and 15-25 parts of alumina nano fiber.
6. The method for manufacturing a laminated aluminum solid state capacitor resistant to high temperature and high humidity according to claim 4, wherein the high withstand voltage fiber layer comprises the following raw materials in parts by weight: 100-120 parts of wood pulp, 1000 parts of water, 40-60 parts of kapok fiber, 20-40 parts of glass fiber, 15-25 parts of tencel fiber, 5-10 parts of polyester fiber and 5-10 parts of polyamide fiber.
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| CN202011253545.5A CN112509814B (en) | 2020-11-11 | 2020-11-11 | High-temperature and high-humidity resistant laminated aluminum solid-state capacitor and preparation method thereof |
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| CN202011253545.5A CN112509814B (en) | 2020-11-11 | 2020-11-11 | High-temperature and high-humidity resistant laminated aluminum solid-state capacitor and preparation method thereof |
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| CN112509814B CN112509814B (en) | 2022-05-31 |
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| CN204167118U (en) * | 2014-10-22 | 2015-02-18 | 常州华务电子有限公司 | A kind of novel conductive polymer electrolyte solid-state aluminum electrolytic capacitor |
| CN104587841A (en) * | 2015-01-27 | 2015-05-06 | 昆明纳太能源科技有限公司 | Conductive filter membrane and preparation method and application thereof |
| CN109577102A (en) * | 2018-12-19 | 2019-04-05 | 浙江莱勒克纸业有限公司 | A kind of electrolytic capacitor paper and preparation method thereof |
| CN110517893A (en) * | 2019-08-14 | 2019-11-29 | 湖南艾华集团股份有限公司 | A kind of high voltage bearing solid-state aluminum electrolytic capacitor and preparation method thereof |
| CN210223793U (en) * | 2019-09-17 | 2020-03-31 | 肇庆市恒英电子有限公司 | High-temperature and high-humidity resistant dry capacitor |
| CN210337157U (en) * | 2019-06-25 | 2020-04-17 | 江苏悦肤堂纺织有限公司 | High-composite multilayer fiber cloth |
| CN111785524A (en) * | 2020-07-15 | 2020-10-16 | 常州华威电子有限公司 | High temperature resistant polymer aluminium solid capacitor |
| CN212062193U (en) * | 2020-09-16 | 2020-12-01 | 南通通成电子有限公司 | High-temperature-resistant electrolytic capacitor for vehicle-mounted equipment |
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2020
- 2020-11-11 CN CN202011253545.5A patent/CN112509814B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204167118U (en) * | 2014-10-22 | 2015-02-18 | 常州华务电子有限公司 | A kind of novel conductive polymer electrolyte solid-state aluminum electrolytic capacitor |
| CN104587841A (en) * | 2015-01-27 | 2015-05-06 | 昆明纳太能源科技有限公司 | Conductive filter membrane and preparation method and application thereof |
| CN109577102A (en) * | 2018-12-19 | 2019-04-05 | 浙江莱勒克纸业有限公司 | A kind of electrolytic capacitor paper and preparation method thereof |
| CN210337157U (en) * | 2019-06-25 | 2020-04-17 | 江苏悦肤堂纺织有限公司 | High-composite multilayer fiber cloth |
| CN110517893A (en) * | 2019-08-14 | 2019-11-29 | 湖南艾华集团股份有限公司 | A kind of high voltage bearing solid-state aluminum electrolytic capacitor and preparation method thereof |
| CN210223793U (en) * | 2019-09-17 | 2020-03-31 | 肇庆市恒英电子有限公司 | High-temperature and high-humidity resistant dry capacitor |
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| CN212062193U (en) * | 2020-09-16 | 2020-12-01 | 南通通成电子有限公司 | High-temperature-resistant electrolytic capacitor for vehicle-mounted equipment |
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