CN113257576A - Preparation method of explosion-proof aluminum electrolytic capacitor - Google Patents
Preparation method of explosion-proof aluminum electrolytic capacitor Download PDFInfo
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- CN113257576A CN113257576A CN202110611053.7A CN202110611053A CN113257576A CN 113257576 A CN113257576 A CN 113257576A CN 202110611053 A CN202110611053 A CN 202110611053A CN 113257576 A CN113257576 A CN 113257576A
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- 239000003990 capacitor Substances 0.000 title claims abstract description 68
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000011888 foil Substances 0.000 claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 238000004804 winding Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000002788 crimping Methods 0.000 claims abstract description 3
- 230000032683 aging Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 11
- 230000015556 catabolic process Effects 0.000 description 9
- 238000011056 performance test Methods 0.000 description 5
- 208000025274 Lightning injury Diseases 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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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
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their 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
- H01G9/022—Electrolytes; Absorbents
-
- 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
- H01G9/10—Sealing, e.g. of lead-in wires
-
- 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
- H01G9/145—Liquid electrolytic capacitors
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention belongs to the technical field of aluminum electrolytic capacitors, and particularly relates to a preparation method of an explosion-proof aluminum electrolytic capacitor, which comprises the following steps: the method comprises the following steps: winding a positive electrode foil, an inner layer of electrolytic paper, a negative electrode foil and an outer layer of electrolytic paper which are sequentially laid from inside to outside together to form a wound core package, wherein a positive electrode lead is arranged on the positive electrode foil to lead out a positive electrode of the capacitor; a negative lead is arranged on the negative foil to lead out the negative electrode of the capacitor; step two: the core bag is soaked in water and then placed in a tubular aluminum shell with a bottom, and then the opening of the aluminum shell is covered by a rubber plug; step three: chamfering and pre-sealing the opening of the aluminum shell; step four: further crimping and sealing the opening of the aluminum shell; step five: and (5) girdling the aluminum shell.
Description
Technical Field
The invention belongs to the technical field of aluminum electrolytic capacitors, and particularly relates to a preparation method of an explosion-proof aluminum electrolytic capacitor.
Background
In order to meet the market demand of fast charging and continuous development of mobile phones and prolong the single use time of the mobile phones, the aluminum electrolytic capacitor is also continuously improved, perfected and innovated. At present, the power of a common mobile phone charger in the market is about 5W, while the power of a quick charger is 2 times or even higher than that of the common charger, and along with the great increase of the power, an aluminum electrolytic capacitor with higher voltage resistance and ripple resistance is required to meet the technical requirements of the rapid charging and continuous development of the mobile phone.
At present, under the state of the art, the aluminum electrolytic capacitor of 10V2.25A mobile phone adapter items provided by manufacturers of Huashi and the like always has the problem of probabilistic failure in high-temperature explosion-proof tests. As shown in fig. 1, in the preparation process of the conventional aluminum electrolytic capacitor, after the core cladding and the rubber plug are sequentially placed into the aluminum shell, the aluminum shell is firstly girdled and then sealed, and the extension range of the aluminum shell in the height direction of the capacitor is limited, so that the aluminum shell at the sealing position extends in the diameter direction of the capacitor, the aluminum shell at the sealing position cannot be tightly attached to the rubber plug, a gap exists, the leakage of the aluminum electrolytic capacitor is caused, the probabilistic failure exists in the high-temperature explosion-proof and lightning stroke test processes, and the rubber plug is easy to bulge and even fly out.
In order to solve the series of problems and meet the technical requirements of customers on the quick charger, products are continuously perfected and innovated.
Disclosure of Invention
The invention provides a preparation method of an explosion-proof aluminum electrolytic capacitor, aiming at solving the problem that the leakage of an aluminum electrolytic capacitor is easy to explode in the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows, and the preparation method of the explosion-proof aluminum electrolytic capacitor comprises the following steps:
the method comprises the following steps: winding a positive electrode foil, an inner layer of electrolytic paper, a negative electrode foil and an outer layer of electrolytic paper which are sequentially laid from inside to outside together to form a wound core package, wherein a positive electrode lead is arranged on the positive electrode foil to lead out a positive electrode of the capacitor; a negative lead is arranged on the negative foil to lead out the negative electrode of the capacitor;
step two: the core bag is soaked in water and then placed in a tubular aluminum shell with a bottom, and then the opening of the aluminum shell is covered by a rubber plug;
step three: chamfering and pre-sealing the opening of the aluminum shell;
step four: further crimping and sealing the opening of the aluminum shell;
step five: and (5) girdling the aluminum shell.
Preferably, the diameter of the capacitor at the seal is D, the value of D being in the range of 9.56mm to 9.63 mm.
Preferably, in the first step, a positive lead plate and a positive foil of the positive lead are connected together by a rivet, a negative lead plate and a negative foil of the negative lead are connected together by a rivet, the positive foil, the inner layer electrolytic paper, the negative foil and the outer layer electrolytic paper are sequentially laid from inside to outside, one end of the inner layer electrolytic paper close to the positive lead is longer than the positive foil, one end of the inner layer electrolytic paper close to the positive lead is folded and covered on the positive foil, and the foremost ends of the positive foil, the inner layer electrolytic paper, the negative foil and the outer layer electrolytic paper are placed at a cylindrical winding needle together and are wound together with the winding needle into the core package. The electric field intensity born by the dielectric of the capacitor is limited, when originally bound charges are separated from the binding of atoms or molecules to participate in conduction, the insulation performance is damaged, and the capacitor is broken down, the length of the paper pulling during the primary winding is increased by enabling one end, close to the anode lead, of the inner-layer electrolytic paper to be longer than that of the anode foil, so that the end, close to the anode lead, of the inner-layer electrolytic paper is reversely folded and covered on the anode foil, and the problems of primary winding breakdown and lead plate breakdown are effectively solved.
Preferably, the winding needle has a diameter of 2.3 mm. Through increasing the diameter of winding needle for it is safer steady to wind the roll process, effectively avoids the core package to appear tiny crackle etc. effectively, effectively improves the breakdown of just rolling up and lead plate and punctures the problem.
Further, in the first step, the positive foil forms a voltage 580VF with a specific volume of 0.75uF/cm2. By adjusting the withstand voltage of the aluminum foil, the positive electrode foil with the same specific capacity and higher withstand voltage is selected, and the withstand voltage capability of the capacitor is further improved.
Further, the preparation method of the explosion-proof aluminum electrolytic capacitor further comprises the sixth step of: after the aging at 490V, the voltage was increased to 530V and then the secondary aging was performed. Further meeting the requirements of high-temperature explosion-proof tests.
Has the advantages that:
(1) according to the preparation method of the explosion-proof aluminum electrolytic capacitor, before girdling, pre-sealing is carried out, then sealing is carried out, so that the extension range of the aluminum shell in the height direction of the capacitor is large enough during edge curling and sealing, and when girdling is carried out again, the aluminum shell at the sealing position has the tendency of inward contraction in the diameter direction of the capacitor, the diameter D of the capacitor at the sealing position is effectively reduced, the sealing edge curling is tightly attached to the rubber plug, no gap exists, and the problems that the aluminum electrolytic capacitor leaks liquid, the high-temperature explosion-proof and lightning stroke test processes have probabilistic failure, and the rubber plug is easy to bulge and fly out are effectively solved;
(2) according to the preparation method of the explosion-proof aluminum electrolytic capacitor, the electric field intensity born by the dielectric medium of the capacitor has a certain limit, when the originally bound charges are separated from the binding of atoms or molecules to participate in conduction, the insulating property is damaged, and the capacitor is broken down;
(3) according to the preparation method of the explosion-proof aluminum electrolytic capacitor, the diameter of the winding needle is increased, so that the winding process is safer and more stable, micro cracks and the like of the core cladding are effectively avoided, and the problems of initial winding breakdown and lead plate breakdown are further effectively improved;
(4) according to the preparation method of the explosion-proof aluminum electrolytic capacitor, after the aging at 490V, the voltage is increased to 530V and then secondary aging is carried out, so that the requirements of high-temperature explosion-proof tests are further met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a process for making a prior art capacitor;
FIG. 2 is a schematic diagram of the core package winding process of the explosion-proof aluminum electrolytic capacitor of the present invention, wherein one end of the inner layer electrolytic paper near the positive electrode lead is folded back and covered on the positive electrode foil;
FIG. 3 is a schematic diagram of the internal structure of the explosion-proof aluminum electrolytic capacitor of the present invention;
FIG. 4 is a schematic side view of a winding pin used in the manufacture of the explosion-proof aluminum electrolytic capacitor of the present invention;
FIG. 5 is a schematic step diagram of the method for manufacturing the explosion-proof aluminum electrolytic capacitor of the present invention;
in the figure: 1. the device comprises a positive electrode foil, 2 an inner layer of electrolytic paper, 3 a negative electrode foil, 4 an outer layer of electrolytic paper, 5a core cladding, 6 a positive electrode lead, 7 a positive electrode lead plate, 8 a negative electrode lead, 9 a negative electrode lead plate, 10 an aluminum shell, 11 a rubber plug, 12 and a winding needle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 2 to 5, a method for manufacturing an explosion-proof aluminum electrolytic capacitor includes the following steps:
the method comprises the following steps: winding a positive electrode foil (1), an inner layer electrolytic paper (2), a negative electrode foil (3) and an outer layer electrolytic paper (4) which are sequentially laid from inside to outside together to form a wound core package (5), wherein a positive electrode lead (6) is arranged on the positive electrode foil (1) to lead out a positive electrode of the capacitor; a negative lead (8) is arranged on the negative foil (3) to lead out the negative electrode of the capacitor;
step two: the core bag (5) is soaked and then placed in a tubular aluminum shell (10) with a bottom, and then the opening of the aluminum shell (10) is covered by a rubber plug (11);
step three: the opening of the aluminum shell (10) is chamfered and pre-sealed by a pre-sealing wheel;
step four: further curling and sealing the opening of the aluminum shell (10) by using a sealing coil, wherein the diameter of the capacitor at the sealing position of the embodiment is D, and the value range of D is 9.56mm-9.63 mm;
step five: the waist-binding wheel is used for binding the waist of the aluminum shell (10) to complete the sealing and waist-binding process of the whole set of capacitor;
step six: after the aging of 490V voltage, the voltage is increased to 530V and then secondary aging is carried out, further meeting the requirements of high temperature explosion-proof tests.
According to the preparation method of the explosion-proof aluminum electrolytic capacitor, before girdling, pre-sealing is carried out, then sealing is carried out, so that the extension range of the aluminum shell (10) in the height direction of the capacitor is large enough during edge curling and sealing, and when girdling is carried out again, the aluminum shell (10) at the sealing position has the tendency of inward contraction in the diameter direction of the capacitor, the diameter D of the capacitor at the sealing position is effectively reduced, the value of the sealing D is reduced to 9.56mm-9.63mm, the sealing edge curling is tightly attached to the rubber plug (11), no gap exists, the problems of leakage of the aluminum electrolytic capacitor, probabilistic failure in the high-temperature explosion-proof and lightning stroke test process, and the rubber plug (11) is easy to bulge and even fly out are effectively solved.
Specifically, in the first step, the positive lead plate (7) of the positive lead (6) is connected to the positive foil (1) by means of clinching, a negative lead plate (9) of a negative lead (8) is connected with a negative foil (3) through a rivet, and then a positive foil (1), an inner layer electrolytic paper (2), the negative foil (3) and an outer layer electrolytic paper (4) are laid in sequence from inside to outside, one end of the inner layer of electrolytic paper (2) close to the anode lead (6) is longer than the anode foil (1), one end of the inner layer of electrolytic paper (2) close to the anode lead (6) is folded and covered on the anode foil (1), and the foremost ends of the anode foil (1), the inner layer of electrolytic paper (2), the cathode foil (3) and the outer layer of electrolytic paper (4) are placed at a cylindrical winding needle (12) and wound together with the winding needle (12) to form a core package (5); the electric field intensity born by the dielectric of the capacitor is limited, when originally bound charges are separated from the binding of atoms or molecules to participate in conduction, the insulating property is damaged, and the capacitor is broken down, namely, the length of the paper pulling in the primary winding process is increased by enabling one end, close to the anode lead (6), of the inner-layer electrolytic paper (2) to be longer than that of the anode foil (1), so that one end, close to the anode lead (6), of the inner-layer electrolytic paper (2) is reversely folded and covered on the anode foil (1), and the problems of primary winding breakdown and lead plate breakdown are effectively solved. The diameter of winding needle (12) of this embodiment is 2.3mm, and the diameter of current winding needle (12) is 2mm for the diameter through increasing winding needle (12) for it is safe more steady around the book process, effectively avoids core package (5) to appear micro crack etc. effectively, effectively improves and just rolls up breakdown and lead wire board breakdown problem.
Specifically, in this embodiment, in the first step, the positive electrode foil (1) forms a voltage 580VF with a specific volume of 0.75uF/cm2. By adjusting the withstand voltage of the aluminum foil, the positive electrode foil (1) with higher withstand voltage under the same specific capacity is selected, and the withstand voltage capability of the capacitor is further improved.
The present embodiment takes 263H series 400V15uF, shell number: 10.2mm by 13mm product is an example. The diameter of the capacitor is denoted as D0The diameter of the beam waist is denoted as B, the total height of the capacitor is denoted as L, and the diameter of the capacitor at the seal is denoted as D. The size measurement data before and after the improvement are compared, the diameter D of the capacitor at the sealing position is effectively reduced, the value of the sealing D is reduced to 9.56mm-9.63mm, the sealing turned edge is tightly attached to the rubber plug (11), no gap exists, the leakage of the aluminum electrolytic capacitor is effectively solved, and the problems of high-temperature explosion prevention and lightning stroke test are solvedThe test process has the problems of probabilistic failure and easy bulge and even flying of the rubber plug (11). See in particular the dimensional measurement data comparison before and after improvement of table 1:
table 1: improved pre-and post-dimensional measurement data comparison
And comparing the performance test data before and after improvement, comparing the four parameters (capacity, loss, ESR (100KHZ) and ESR (120HZ)), obviously improving the improved data to be ideal, passing a 3 omega 2.0KV lightning surge test after the product is improved, ensuring that the service life reaches 3000h (105 ℃), and obtaining the improved product test result which is approved by customers. See table 2 for pre-improvement performance test data and table 3 for post-improvement performance test data:
table 2: performance test data before improvement
Table 3: improved performance test data
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one device or feature to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
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 able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (6)
1. A preparation method of an explosion-proof aluminum electrolytic capacitor is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: winding a positive electrode foil (1), an inner layer electrolytic paper (2), a negative electrode foil (3) and an outer layer electrolytic paper (4) which are sequentially laid from inside to outside together to form a wound core package (5), wherein a positive electrode lead (6) is arranged on the positive electrode foil (1) to lead out a positive electrode of the capacitor; a negative lead (8) is arranged on the negative foil (3) to lead out the negative electrode of the capacitor;
step two: the core bag (5) is soaked and then placed in a tubular aluminum shell (10) with a bottom, and then the opening of the aluminum shell (10) is covered by a rubber plug (11);
step three: chamfering and pre-sealing an opening of the aluminum shell (10);
step four: further crimping and sealing the opening of the aluminum shell (10);
step five: the waist of the aluminum shell (10) is restrained.
2. The method for preparing the explosion-proof aluminum electrolytic capacitor according to claim 1, characterized in that: the diameter of the capacitor at the sealing position is D, and the value range of D is 9.56mm-9.63 mm.
3. The method for preparing the explosion-proof aluminum electrolytic capacitor according to claim 1 or 2, characterized in that: in the first step, a positive lead plate (7) of a positive lead (6) is connected with a positive foil (1) through a rivet, a negative lead plate (9) of a negative lead (8) is connected with a negative foil (3) through the rivet, the positive foil (1), inner-layer electrolytic paper (2), the negative foil (3) and outer-layer electrolytic paper (4) are sequentially laid from inside to outside, one end, close to the positive lead (6), of the inner-layer electrolytic paper (2) is longer than the positive foil (1), one end, close to the positive lead (6), of the inner-layer electrolytic paper (2) is reversely folded and covered on the positive foil (1), and the foremost ends of the positive foil (1), the inner-layer electrolytic paper (2), the negative foil (3) and the outer-layer electrolytic paper (4) are placed at a cylindrical winding needle (12) together and are wound into a core package (5) together with the winding needle (12).
4. The method for preparing the explosion-proof aluminum electrolytic capacitor according to claim 3, characterized in that: the diameter of the winding needle (12) is 2.3 mm.
5. The method for preparing the explosion-proof aluminum electrolytic capacitor according to claim 3, characterized in that: in the first step, the positive electrode foil (1) forms a voltage 580VF with a specific volume of 0.75uF/cm2。
6. The method for preparing the explosion-proof aluminum electrolytic capacitor according to claim 1 or 2, characterized in that: the preparation method of the explosion-proof aluminum electrolytic capacitor further comprises the following six steps: after the aging at 490V, the voltage was increased to 530V and then the secondary aging was performed.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203617148U (en) * | 2013-08-27 | 2014-05-28 | 黄泽锋 | Novel super capacitor |
| CN106024389A (en) * | 2016-06-27 | 2016-10-12 | 东莞市杉田电子科技有限公司 | Aluminum-titanium organic-metal electrolytic capacitor and preparation method thereof |
| CN205959794U (en) * | 2016-08-10 | 2017-02-15 | 南通星晨电子有限公司 | Electricity container closure device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203617148U (en) * | 2013-08-27 | 2014-05-28 | 黄泽锋 | Novel super capacitor |
| CN106024389A (en) * | 2016-06-27 | 2016-10-12 | 东莞市杉田电子科技有限公司 | Aluminum-titanium organic-metal electrolytic capacitor and preparation method thereof |
| CN205959794U (en) * | 2016-08-10 | 2017-02-15 | 南通星晨电子有限公司 | Electricity container closure device |
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