CN108172404B - Preparation method of aluminum electrolytic capacitor - Google Patents

Preparation method of aluminum electrolytic capacitor Download PDF

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Publication number
CN108172404B
CN108172404B CN201810039480.0A CN201810039480A CN108172404B CN 108172404 B CN108172404 B CN 108172404B CN 201810039480 A CN201810039480 A CN 201810039480A CN 108172404 B CN108172404 B CN 108172404B
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shell
graphene
solution system
core
electrolyte
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CN108172404A (en
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艾茂
彭国
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Yiyang Anxing Electronics Co ltd
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    • 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
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/24—Distinguishing marks, e.g. colour coding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/0029—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
    • H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

An aluminum electrolytic capacitor comprises a shell, a rubber plug and a core package, wherein the rubber plug seals the core package impregnated with electrolyte in the shell, an explosion-proof groove is formed in the inner shell surface of the bottom of the shell, the explosion-proof groove is opposite to the bottom of the core package, and a layer of packing paper is arranged between the bottom of the core package and the explosion-proof groove; the shell surface at the bottom of the shell is smooth and is printed or plated with a layer of marking film; the electrolyte contains graphene which accounts for 0.02-0.7% of the total mass of the electrolyte. The aluminum electrolytic capacitor can print or plate a layer of product information film on the outer side surface of the bottom of the shell, so that the product information of the capacitor can be conveniently seen on the circuit board. Meanwhile, the structure of the aluminum electrolytic capacitor core cladding can reduce the phenomenon of short circuit in the capacitor and improve the yield of the capacitor product.

Description

Preparation method of aluminum electrolytic capacitor
Technical Field
The invention relates to a capacitor, in particular to an aluminum electrolytic capacitor and a preparation method thereof.
Background
The explosion-proof tank of the existing aluminum electrolytic capacitor is arranged on the outer side surface of the bottom of a shell, a sleeve is arranged on the shell, and information of a product is marked on the sleeve.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an aluminum electrolytic capacitor with capacitor product information marked on the outer side surface of the bottom of a shell and a preparation method thereof.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: an aluminum electrolytic capacitor comprises a shell, a rubber plug and a core package, wherein the rubber plug seals the core package impregnated with electrolyte in the shell, an explosion-proof groove is formed in the inner shell surface of the bottom of the shell and is right opposite to the bottom of the core package, and a layer of packing paper is arranged between the bottom of the core package and the explosion-proof groove; the shell surface of the bottom of the shell is smooth and is printed or plated with a layer of marking film; the electrolyte contains graphene which accounts for 0.02-0.7% of the total mass of the electrolyte.
In the invention, the explosion-proof groove is arranged inside the shell, so that the outer side surface of the bottom of the shell is a flat surface, and the printing or film coating of the identification information of the product becomes possible. The information of the traditional capacitor product, such as the positive pole mark, the negative pole mark, the capacity, the manufacturer and the like, is printed or plated on the outer side surface of the bottom of the shell in the form of a film. After the capacitor is welded on the circuit board, the product information mark is positioned at the tail part of the capacitor, so that the product information mark can be directly seen, and the capacitor is very convenient; especially when the circuit board is tested and the capacitors with different specifications need to be replaced.
In the invention, the packing paper can separate the explosion-proof groove from the core bag, so that the smoothness degree of the groove body edge of the explosion-proof groove can reduce the requirement, and the shell is convenient to process. The bottom of the core bag is not scratched by the groove body under the action of the packing paper, and the capacitor can play a certain buffering role when the capacitor explodes, so that the electrolyte is prevented from being directly sprayed onto the circuit board to damage the circuit board.
In the invention, one or more layers of transparent adhesive tapes are wound on the outer side of the core bag, and the transparent adhesive tapes extend out of the bottom of the core bag by 1-3 mm. In the invention, the transparent adhesive tape is wound on the outer side of the core bag, so that the core bag can be prevented from being scattered. The wound tape, especially the tape extending out of the bottom of the core pack, prevents the outer edge of the bottom of the core pack from directly striking the outer casing.
In the invention, one form of the core bag is formed by winding the positive electrode foil, the electrolytic paper and the negative electrode foil, wherein the two sides of the positive electrode foil and the negative electrode foil are flush, and the two sides of the electrolytic paper extend out of the two sides of the positive electrode foil and the negative electrode foil by 0-3 mm. The size of the capacitor can be reduced as much as possible due to the fact that the two sides of the positive electrode foil and the negative electrode foil are flush, but the cutting burrs on the positive electrode foil can be turned over the electrolytic paper to be in contact with the negative electrode foil to cause short circuit; however, in the present invention, both sides of the electrolytic paper extend a certain distance from the positive electrode foil and the negative electrode foil, so that the burrs on the positive electrode foil cannot easily roll over the electrolytic paper to contact the negative electrode foil to cause short circuit.
In the invention, the core bag is formed by winding the positive electrode foil, the electrolytic paper and the negative electrode foil in another form; the width of the positive electrode foil is 2-4mm wider than that of the negative electrode foil, the negative electrode foil extends 1-2mm from two sides of the positive electrode foil, and the electrolytic paper extends 0-3mm from two sides of the positive electrode foil. Under the core bag in the form, because both sides of the negative electrode foil are positioned at the inner side of the positive electrode foil, even if burrs at the edges of both sides of the positive electrode foil pierce the electrolytic paper, the electrolytic paper cannot be contacted with the negative electrode foil, short circuit cannot be generated, and the qualification rate of the capacitor can be improved.
The preparation method of the aluminum electrolytic capacitor comprises the following steps of 1) cutting, namely cutting the positive foil, the negative foil and the electrolytic paper according to the preset size requirement of a product;
2) winding the positive foil, the negative foil and the electrolytic paper into a core package according to the position relationship of the positive foil, the negative foil and the electrolytic paper;
3) one or more layers of transparent adhesive tapes are wound on the outer side surface of the core bag, and the transparent adhesive tapes extend out of the bottom of the core bag by 1-3 mm;
4) bending the transparent adhesive tape inwards along the edge of the bottom of the core bag;
5) impregnating the core bag with electrolyte;
Figure 100002_DEST_PATH_IMAGE001
preparation of solution System
Figure DEST_PATH_IMAGE002
；
Figure 100002_DEST_PATH_IMAGE003
Preparing graphene by an arc discharge method;
Figure DEST_PATH_IMAGE004
adding graphene to a solution system
Figure 909832DEST_PATH_IMAGE002
In the method, ultrasonic waves are used for oscillating for 60 to 120 minutes at the temperature of 40 to 60 ℃, and the added graphene is a solution system
Figure 889289DEST_PATH_IMAGE002
0.1% -1% of mass fraction, wherein the graphene is prepared by an arc discharge method;
Figure 100002_DEST_PATH_IMAGE005
preparing solution system
Figure DEST_PATH_IMAGE006
Sequentially adding the monomers and the cross-linking agent into a liquid preparation tank, uniformly mixing and stirring, adding a thermal initiator, and stirring for 30-50 minutes;
Figure 100002_DEST_PATH_IMAGE007
a solution system containing graphene
Figure 855977DEST_PATH_IMAGE002
And solution system
Figure 782345DEST_PATH_IMAGE006
Mixing and stirring for 10-30 minutes according to the proportion of 1:4-7:3 to obtain a uniform and clear solution;
Figure DEST_PATH_IMAGE008
impregnating the core bag with water
Figure 190193DEST_PATH_IMAGE007
The resulting homogeneous, clear solution;
Figure 100002_DEST_PATH_IMAGE009
will complete the step
Figure 340551DEST_PATH_IMAGE008
The core package is placed in an oven at the temperature of 65-105 ℃ and cured for 20 minutes-4 hours to obtain graphene-based gel-state electrolyte;
the solution system
Figure 404322DEST_PATH_IMAGE002
Is a non-aqueous electrolyte;
the solution system
Figure 399960DEST_PATH_IMAGE006
The composite material comprises 85-95% of polymerized monomer, 2-20% of cross-linking agent and 0.1-10% of thermal initiator by mass, wherein the thermal initiator comprises one or two of hydrogen peroxide and persulfate; the cross-linking agent comprises one or more of 2-ethylhexyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate and methyl methacrylate; the polymerized monomer comprises one or more of acrylic acid, methyl acrylate, isobutyl acrylate and ethyl methacrylate;
6) placing a packing paper in the housing;
7) placing the core bag obtained in the step 5) in a shell, and assembling;
8) and plating a layer of identification layer on the bottom of the assembled capacitor shell.
In the invention, the amount of the graphene is a solution system
Figure 865576DEST_PATH_IMAGE002
0.4 percent of the mass percentage. In the invention, the graphene with too low content has weak conductive effect in the solution, but the excessive graphene can reduce the conductive effect of the gel electrolyte, because the excessive graphene is added to hinder the migration of ions in the gel electrolyte and is not beneficial to the conduction of electrons.
According to the invention, the graphene nanosheet prepared by the arc discharge method is small in size, high in purity, ultrahigh in conductivity and excellent in thermal stability; after the electrolyte is added into the gel electrolyte, the conductivity of the gel electrolyte can be effectively improved. Through multiple tests, the system with the graphene content as the solution
Figure 655678DEST_PATH_IMAGE002
When the mass percent is 0.4%, the conductivity of the gel electrolyte can reach 6.7mS cm-1. Through a contrast test, the thermal stability of the gel electrolyte added with the graphene is better than that of the gel electrolyte without the graphene, the critical point of the thermal stability of the gel electrolyte added with the graphene is more than 400 ℃, and the thermal stability of the gel electrolyte without the graphene is higher than that of the gel electrolyte added with the grapheneThe critical point is around 370 degrees celsius. After the graphene is added, the graphene and the polymer are tightly combined together through intermolecular force, so that a plurality of 'fast channels' are formed, and ions in the electrolyte can be rapidly diffused. In addition, the gel electrolyte added with the graphene has higher conductivity, so that the impedance of the gel electrolyte is reduced.
The aluminum electrolytic capacitor can print or plate a layer of product information film on the outer side surface of the bottom of the shell, so that the product information of the capacitor can be conveniently seen on the circuit board. Meanwhile, the structure of the aluminum electrolytic capacitor core cladding can reduce the phenomenon of short circuit in the capacitor and improve the yield of the capacitor product.
Drawings
FIG. 1 is a schematic view of the structure of an aluminum electrolytic capacitor according to the present invention.
Fig. 2 is a schematic structural view of the bottom of the housing of the present invention.
FIG. 3 is a schematic sectional view of an aluminum electrolytic capacitor according to the present invention.
Fig. 4 is an enlarged schematic view of a portion a in fig. 3.
Fig. 5 is a schematic structural view of the core pack of the present invention after deployment.
Description of the figures
1. A housing; 2. a rubber plug; 3. a core package; 4. an explosion-proof groove; 5. packing paper; 6. a marking film; 7. a transparent adhesive tape; 8. a positive electrode foil; 9. a negative electrode foil; 10. and (3) electrolyzing the paper.
Detailed Description
In order to facilitate an understanding of the present invention, the present invention will be described more fully and in detail with reference to the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
It should be particularly noted that when an element is referred to as being "fixed to, connected to or communicated with" another element, it can be directly fixed to, connected to or communicated with the other element or indirectly fixed to, connected to or communicated with the other element through other intermediate connecting components.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Example 1
An aluminum electrolytic capacitor comprises a shell 1, a rubber plug 2 and a core package 3, wherein the rubber plug 2 seals the core package 3 impregnated with electrolyte in the shell 1, an explosion-proof groove 4 is formed in the inner shell surface of the bottom of the shell 1, the explosion-proof groove 4 is opposite to the bottom of the core package 3, and a layer of packing paper 5 is arranged between the bottom of the core package 3 and the explosion-proof groove 4; the bottom of the housing 1 has a flat outer surface and is printed or plated with a marking film 6.
In this embodiment, 2 layers of scotch tapes 7 are wound on the outer side of the core pack 3, and the scotch tapes 7 extend 1mm out of the bottom of the core pack 3. The core package 3 is formed by winding a positive electrode foil 8, electrolytic paper 10 and a negative electrode foil 9, the two sides of the positive electrode foil 8 and the negative electrode foil 9 are flush, and the two sides of the electrolytic paper 10 extend out of the two sides of the positive electrode foil 8 and the negative electrode foil 9 by 0.8 mm.
The preparation method of the aluminum electrolytic capacitor comprises the following steps of 1) cutting, namely cutting the positive foil, the negative foil and the electrolytic paper according to the preset size requirement of a product;
2) winding the anode foil, the cathode foil and the electrolytic paper into a core package according to the position relationship of the anode foil, the cathode foil and the electrolytic paper, wherein the two side edges of the anode foil and the cathode foil are flush, and the electrolytic paper extends out of the anode foil and the cathode foil by 0.8 mm;
3) 2 layers of transparent adhesive tapes are wound on the outer side surface of the core bag, and the transparent adhesive tapes extend out of the bottom of the core bag by 1 mm;
4) bending the transparent adhesive tape inwards along the edge of the bottom of the core bag;
5) impregnating the core bag with electrolyte;
Figure 941166DEST_PATH_IMAGE001
preparation of solution System
Figure 474915DEST_PATH_IMAGE002
；
Figure 60617DEST_PATH_IMAGE003
Preparing graphene by an arc discharge method;
Figure 287199DEST_PATH_IMAGE004
adding graphene to a solution system
Figure 59983DEST_PATH_IMAGE002
In the method, ultrasonic waves are used for oscillating for 60 to 120 minutes at the temperature of 40 to 60 ℃, and the added graphene is a solution system
Figure 131845DEST_PATH_IMAGE002
0.4% of mass fraction;
Figure 572053DEST_PATH_IMAGE005
preparing solution system
Figure 703957DEST_PATH_IMAGE006
Sequentially adding the monomers and the cross-linking agent into a liquid preparation tank, uniformly mixing and stirring, adding a thermal initiator, and stirring for 30-50 minutes;
Figure 964037DEST_PATH_IMAGE007
mixing the solution system
Figure 105169DEST_PATH_IMAGE002
And solution system
Figure 134304DEST_PATH_IMAGE006
Mixing and stirring for 10-30 minutes according to the proportion of 1:4-7:3 to obtain a uniform and clear solution;
Figure 702689DEST_PATH_IMAGE008
impregnating the core bag with water
Figure 450065DEST_PATH_IMAGE007
The resulting homogeneous, clear solution;
Figure 129308DEST_PATH_IMAGE009
will complete the step
Figure 278530DEST_PATH_IMAGE008
The core package is placed in an oven at the temperature of 65-105 ℃ and cured for 20 minutes-4 hours to obtain graphene-based gel-state electrolyte;
solution system
Figure 752236DEST_PATH_IMAGE002
Is a non-aqueous electrolyte;
the solution system
Figure 986909DEST_PATH_IMAGE006
The composite material comprises 85-95% of polymerized monomer, 2-20% of cross-linking agent and 0.1-10% of thermal initiator by mass, wherein the thermal initiator comprises one or two of hydrogen peroxide and persulfate; the cross-linking agent comprises one or more of 2-ethylhexyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate and methyl methacrylate; the polymerized monomer comprises one or more of acrylic acid, polyacrylic acid, methyl acrylate, isobutyl acrylate and ethyl methacrylate;
6) placing a packing paper in the housing;
7) placing the core bag obtained in the step 5) in a shell, and assembling;
8) and plating a layer of identification layer on the bottom of the assembled capacitor shell.
In example 1, the solution system
Figure 204263DEST_PATH_IMAGE002
The ingredients of (A) are as follows:
composition (I) Mass percent
Ethylene glycol 65.6%
Glycerol 17%
Adipic acid ammonium salt 8%
Ammonium pentaborate
6%
P-nitrophenol 3%
Graphene 0.4%
Solution system
Figure 207992DEST_PATH_IMAGE006
Is as follows
Composition (I) Mass percent
Acrylic acid 83%
2-Hydroxyethyl methacrylate 10%
Hydrogen peroxide
7 %
The thermosetting temperature is 80-105 ℃, and the thermosetting time can be 30min-2 h.
The gel electrolyte of this example had a conductivity of 6.7mS · cm-1。
Example 2
In this embodiment, the core pack 3 is formed by winding a positive electrode foil 8, an electrolytic paper 10, and a negative electrode foil 9; the width of the positive electrode foil 8 is 2mm wider than that of the negative electrode foil 9, and both sides of the positive electrode foil 8 protrude 1mm from the negative electrode foil, and both sides of the electrolytic paper 10 protrude 1mm from both sides of the positive electrode foil 8.
The other portions of this example are the same as example 1.

Claims (2)

1. A method for preparing an aluminum electrolytic capacitor is characterized by comprising the following steps: the method comprises the following steps of 1) cutting, namely cutting a positive electrode foil, a negative electrode foil and electrolytic paper according to the preset size requirement of a product;
2) winding the positive foil, the negative foil and the electrolytic paper into a core package according to the position relationship of the positive foil, the negative foil and the electrolytic paper;
3) one or more layers of transparent adhesive tapes are wound on the outer side surface of the core bag, and the transparent adhesive tapes extend out of the bottom of the core bag by 1-3 mm;
4) bending the transparent adhesive tape inwards along the edge of the bottom of the core bag;
5) impregnating the core bag with electrolyte;
Figure DEST_PATH_IMAGE001
preparation of solution System
Figure 601173DEST_PATH_IMAGE002
；
Figure DEST_PATH_IMAGE003
Preparing graphene by an arc discharge method;
Figure 507818DEST_PATH_IMAGE004
adding graphene to a solution system
Figure 958522DEST_PATH_IMAGE002
In the method, ultrasonic waves are used for oscillating for 60 to 120 minutes at the temperature of 40 to 60 ℃, and the added graphene is a solution system
Figure 29246DEST_PATH_IMAGE002
0.1-1% of mass fraction;
Figure DEST_PATH_IMAGE005
preparing solution system
Figure 708751DEST_PATH_IMAGE006
Sequentially adding the monomers and the cross-linking agent into a liquid preparation tank, uniformly mixing and stirring, adding a thermal initiator, and stirring for 30-50 minutes;
Figure DEST_PATH_IMAGE007
a solution system containing graphene
Figure 469903DEST_PATH_IMAGE002
And solution system
Figure 842241DEST_PATH_IMAGE006
Mixing and stirring for 10-30 minutes according to the proportion of 1:4-7:3 to obtain a uniform and clear solution;
Figure 72365DEST_PATH_IMAGE008
impregnating the core bag with water
Figure 913151DEST_PATH_IMAGE007
The resulting homogeneous, clear solution;
Figure DEST_PATH_IMAGE009
will complete the step
Figure 233536DEST_PATH_IMAGE008
The core package is placed in an oven at the temperature of 65-105 ℃ and cured for 20 minutes-4 hours to obtain graphene-based gel-state electrolyte;
the solution system
Figure 885097DEST_PATH_IMAGE002
Is a non-aqueous electrolyte;
the solution system
Figure 992730DEST_PATH_IMAGE006
The composite material comprises 85-95% of polymerized monomer, 2-20% of cross-linking agent and 0.1-10% of thermal initiator by mass, wherein the thermal initiator comprises one or two of hydrogen peroxide and persulfate; the cross-linking agent comprises one or more of 2-ethylhexyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate and methyl methacrylate; the polymerized monomer comprises one or more of acrylic acid, methyl acrylate, isobutyl acrylate and ethyl methacrylate;
6) placing a packing paper in the housing;
7) placing the core bag obtained in the step 5) in a shell, and assembling;
8) plating a layer of identification layer on the bottom of the assembled capacitor shell;
the aluminum electrolytic capacitor comprises a shell, a rubber plug and a core package, wherein the rubber plug seals the core package impregnated with electrolyte in the shell, an explosion-proof groove is formed in the inner shell surface of the bottom of the shell, the explosion-proof groove is right opposite to the bottom of the core package, and a layer of packing paper is arranged between the bottom of the core package and the explosion-proof groove; the shell surface of the bottom of the shell is smooth and is printed or plated with a layer of marking film; the electrolyte contains graphene which accounts for 0.02-0.7% of the total mass of the electrolyte.
2. The method for manufacturing an aluminum electrolytic capacitor according to claim 1, characterized in that: the amount of the graphene is a solution system
Figure 387940DEST_PATH_IMAGE002
0.4 percent of the mass percentage.
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CN109065366A (en) * 2018-09-03 2018-12-21 四川峻豪电子科技有限公司 A kind of aluminium electrolutic capacitor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201514859U (en) * 2009-09-30 2010-06-23 铜陵市新泰电容电器有限责任公司 AC capacitor without positioning sleeve
CN106169373A (en) * 2016-08-24 2016-11-30 湖南艾华集团股份有限公司 A kind of aluminium electrolutic capacitor of resistance to the vibration shape
CN106206024A (en) * 2016-08-31 2016-12-07 湖南艾华集团股份有限公司 A kind of aluminium electrolutic capacitor based on heat cure gel electrolyte and preparation method thereof
CN205943770U (en) * 2016-05-20 2017-02-08 南通星晨电子有限公司 Arc riveting formula high pressure paster aluminium electrolytic capacitor subassembly
CN106981366A (en) * 2017-05-05 2017-07-25 湖南艾华集团股份有限公司 Gel electrolyte, production method and the forming method wrapped in core of doped carbon

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201514859U (en) * 2009-09-30 2010-06-23 铜陵市新泰电容电器有限责任公司 AC capacitor without positioning sleeve
CN205943770U (en) * 2016-05-20 2017-02-08 南通星晨电子有限公司 Arc riveting formula high pressure paster aluminium electrolytic capacitor subassembly
CN106169373A (en) * 2016-08-24 2016-11-30 湖南艾华集团股份有限公司 A kind of aluminium electrolutic capacitor of resistance to the vibration shape
CN106206024A (en) * 2016-08-31 2016-12-07 湖南艾华集团股份有限公司 A kind of aluminium electrolutic capacitor based on heat cure gel electrolyte and preparation method thereof
CN106981366A (en) * 2017-05-05 2017-07-25 湖南艾华集团股份有限公司 Gel electrolyte, production method and the forming method wrapped in core of doped carbon

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