CN109920646A - A kind of preparation process improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics - Google Patents
A kind of preparation process improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics Download PDFInfo
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- CN109920646A CN109920646A CN201910158714.8A CN201910158714A CN109920646A CN 109920646 A CN109920646 A CN 109920646A CN 201910158714 A CN201910158714 A CN 201910158714A CN 109920646 A CN109920646 A CN 109920646A
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- aluminium electrolutic
- electrolutic capacitor
- temperature characteristics
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Abstract
The invention discloses a kind of preparation processes for improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, are related to aluminium electrolutic capacitor field, to solve the problems, such as that aluminium electrolutic capacitor Capacitance Shift Rate under low-temperature condition is larger.Processing step is as follows: step 1 is cut；Step 2 manufactures core packet；Step 3, chemical conversion；Step 4, it is dry；Step 5, impregnation: the core packet after drying being put into PEDT:PSS dispersion liquid and is impregnated with, and after dry, is impregnated in the electrolytic solution again；Step 6, group are vertical；Step 7 prepares finished product.Preparation process of the present invention is simple, it is improved on existing Process ba- sis, it is assembled immediately without drying, the finished product of preparation can be effectively improved the low-temperature characteristics of high-voltage solid-state aluminium electrolutic capacitor containing being immersed in the electrolyte containing ethanedioic acid ammonium again after being impregnated with PEDT:PSS dispersion liquid.
Description
Technical field
The present invention relates to aluminium electrolutic capacitor field, specifically a kind of improvement high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics
Preparation process.
Background technique
Capacitor is a kind of device for accommodating charge, is one of the electronic component largely used in electronic equipment, answers extensively
It for the separated by direct communication in circuit, couples, bypasses, filtering, resonant tank, energy conversion, control etc..With electronic information
Technology is maked rapid progress, and the update speed of digital electronic goods is getting faster, with flat panel TV, laptop, number
Consumer electronics product volume of production and marketing sustainable growth based on the products such as camera has driven capacitor industry to increase.
Solid-state polymer aluminium electrolutic capacitor is exactly a kind of common capacitor, the conduction of existing solid-state aluminum electrolytic capacitor
Medium is conductive polymer medium, and main component is 3,4-rthylene dioxythiophene, and under low-temperature condition, Capacitance Shift Rate is larger；
Capacitance Shift Rate is for describing variation of the capacity relative to (20 DEG C) capacity under room temperature under low-temperature condition；Formula: △ C=∣
Ct-C0∣/C0, Ct: product capacity, C are measured in the case where temperature is t DEG C (120Hz)0: product appearance is measured under 20 DEG C of room temperature (120Hz)
Amount, Capacitance Shift Rate are larger.
Summary of the invention
The purpose of the present invention is to provide it is a kind of improve high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics preparation process, with
Solve the problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme:
A kind of preparation process improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, the specific steps are as follows:
Step 1 is cut: anode foils, Cathode Foil and electrolytic paper are cut into specified width, which width on demand；
Step 2 manufactures core packet: anode foils, Cathode Foil, electrolytic paper and guide pin are wound into core packet with automatic nail volume machine, and
Core packet is welded on iron bar；
Chemical conversion: core packet is immersed in forming liquid the repairing oxidation film that is powered, the core packet after being melted by step 3；
Step 4, it is dry: the core packet after chemical conversion is put into the core packet that high temperature oven is dry, after being dried；
Step 5, impregnation: the core packet after drying being put into PEDT:PSS dispersion liquid and is impregnated with, and after dry, is being electrolysed again
It is impregnated in liquid；
Step 6, group are vertical: for the core packet after impregnation electrolyte without drying, directly group is vertical, and the core packet prepared is sealed, is obtained
The product stood to group；
Step 7 prepares finished product: the product that group has been stood carries out aging, stamp, processing, packaging process to get finished product.
As a further solution of the present invention: the temperature of step 4 high temperature baking oven is 150-220 degrees Celsius, when dry
Between be 60-120 minutes.
As a further solution of the present invention: (3,4- ethylenedioxythiophene) poly- in PEDT:PSS dispersion liquid in step 5
Mass ratio with poly- (styrene sulfonate) is 5.2-6.7:1.
As a further solution of the present invention: electrolyte includes solvent and solute in step 5, and solvent is ethylene glycol, diethyl
One of glycol, triethylene glycol, mono- butyrolactone of γ, sulfolane, dimethyl sulfoxide, dimethylformamide and dimethyl acetamide or
It is several.
As a further solution of the present invention: electrolyte includes solvent and solute in step 5, and solute is adipic acid, second two
One or more of sour ammonium, ammonium formate, dodecanedioic acid, phthalic acid.
As a further solution of the present invention: the time being impregnated in step 5 is 10-15 minutes.
As a further solution of the present invention: rubber stopper and aluminum hull sealed core packet are used in step 6.
Compared with prior art, the beneficial effects of the present invention are: preparation process of the present invention is simple, in existing Process ba- sis
On improve, again containing being immersed in the electrolyte containing ethanedioic acid ammonium after being impregnated with PEDT:PSS dispersion liquid, without dry vertical
It assembles, the finished product of preparation can be effectively improved the low-temperature characteristics of high-voltage solid-state aluminium electrolutic capacitor.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment.
Embodiment 1
A kind of preparation process improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, the specific steps are as follows:
Step 1 is cut: anode foils, Cathode Foil and electrolytic paper are cut into specified width, which width on demand；
Step 2 manufactures core packet: anode foils, Cathode Foil, electrolytic paper and guide pin are wound into core packet with automatic nail volume machine, and
Core packet is welded on iron bar；
Chemical conversion: core packet is immersed in forming liquid the repairing oxidation film that is powered, the core packet after being melted by step 3；
Step 4, dry: the high temperature oven that the core packet after chemical conversion is put into 189 degrees Celsius is 95 minutes dry, obtains drying
Core packet afterwards；
Step 5, impregnation: the core packet after drying being put into PEDT:PSS dispersion liquid and is impregnated with 12 minutes, after dry, again
It is impregnated in the electrolytic solution, electrolyte includes solvent and solute, and solvent is sulfolane, and solute is ethanedioic acid ammonium；
Step 6, group are vertical: for the core packet after impregnation electrolyte without drying, directly group is vertical, will be prepared with rubber stopper and aluminum hull
Good core packet sealing, obtains the product that group has been stood；
Step 7 prepares finished product: the product that group has been stood carries out aging, stamp, processing, packaging process to get finished product.
Selection specification is 220 μ F25V, the product having a size of φ 8mm × 11mm as embodiment 1, at this time at 20 DEG C, 0
DEG C, -25 DEG C, -55 DEG C of three temperature sections carry out temperature property test, and the results are shown in Table 1, CAP indicates that capacity, DF are indicating angle of loss just
It cuts, ESR indicates that equivalent series resistance, LC indicate leakage current.
Table 1
| Test temperature | CAP(μF/120Hz) | △C | DF (%) | ESR(mΩ/100kHz) |
| 20℃ | 238.52 | - | 1.92 | 12.85 |
| 0℃ | 233.72 | 2.01% | 1.79 | 14.06 |
| -25℃ | 227.95 | 4.43% | 1.91 | 16.38 |
| -55℃ | 222.6 | 6.67% | 2.45 | 16.54 |
Comparative example 1
Selection specification be 220 μ F25V, having a size of φ 8mm × 11mm as a comparison case 1 product, the system of 1 product of comparative example
Preparation Method is conventional solid-state capacitor manufacturing process, the specific steps are as follows:
Step 1 is cut: anode foils, Cathode Foil, electrolytic paper are cut into specified width, which width on demand；
Step two, manufactures core packet: anode foils, Cathode Foil, electrolytic paper, guide pin being wound into core packet with automatic nail volume machine, and will
Core packet is welded on iron bar；
Chemical conversion: core packet is immersed in forming liquid the repairing oxidation film that is powered by step 3；
Step 4, it is dry: it is dry that core packet after chemical conversion being put into high temperature oven；
Impregnation: step 5 core packet after drying is put into PEDT:PSS Dispersions Dispersion and is impregnated with；
Dry dispersion liquid: core packet after impregnation is put into oven drying and obtains sub-prime by step 6；
Step 7, group are vertical: by automatic assembling machine, being sealed the sub-prime prepared with rubber stopper, aluminum hull；
Step 8 prepares finished product: the product that group has been stood carries out aging, stamp, processing, packaging process to get high writing that surpasses all the others
Wound solid electrolytic capacitor.
At this time at 20 DEG C, 0 DEG C, -25 DEG C, -55 DEG C of three temperature sections carry out temperature property test to the product of comparative example 1,
It the results are shown in Table 2.
Table 2
| Test temperature | CAP(μF/120Hz) | △C | DF (%) | ESR(mΩ/100kHz) |
| 20℃ | 210.89 | - | 1.8 | 6.91 |
| 0℃ | 205.16 | 2.72% | 2.5 | 6.74 |
| -25℃ | 191.54 | 9.18% | 5.72 | 6.52 |
| -55℃ | 148.79 | 29.45% | 2.62 | 5.93 |
It can be seen that, the product of comparative example 1 Capacitance Shift Rate at -25 DEG C, -55 DEG C is 9.18% He from Tables 1 and 2
29.45%, the product of embodiment 1 Capacitance Shift Rate at -25 DEG C, -55 DEG C is 4.43% and 6.67%, the product of embodiment 1
Capacitance Shift Rate is far below the product of comparative example 1 at -25 DEG C, -55 DEG C, shows the product of method preparation of the invention in low temperature
Capacitance Shift Rate is smaller under state, hence it is evident that improves the capacity characteristic of product under cryogenic.
The INVENTION IN GENERAL has been impregnated with PEDT in conventional conductive high molecular aluminium electrolytic capacitor production process:
After PSS dispersion liquid, then a kind of electrolyte is added, ethanedioic acid ammonium is at least contained in the electrolyte, which can obviously change
The low-temperature characteristics of kind high-voltage solid-state aluminium electrolutic capacitor.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of preparation process for improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, which is characterized in that specific step is as follows:
Step 1 is cut: anode foils, Cathode Foil and electrolytic paper are cut into specified width, which width on demand；
Step 2 manufactures core packet: anode foils, Cathode Foil, electrolytic paper and guide pin being wound into core packet with automatic nail volume machine, and by core
Packet is welded on iron bar；
Chemical conversion: core packet is immersed in forming liquid the repairing oxidation film that is powered, the core packet after being melted by step 3；
Step 4, it is dry: the core packet after chemical conversion is put into the core packet that high temperature oven is dry, after being dried；
Step 5, impregnation: the core packet after drying being put into PEDT:PSS dispersion liquid and is impregnated with, after dry, again in the electrolytic solution
Impregnation；
Step 6, group are vertical: for the core packet after impregnation electrolyte without drying, directly group is vertical, and the core packet prepared is sealed, group is obtained
The product stood；
Step 7 prepares finished product: the product that group has been stood carries out aging, stamp, processing, packaging process to get finished product.
2. the preparation process according to claim 1 for improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, feature exist
In the temperature of the step 4 high temperature baking oven is 150-220 degrees Celsius, and the dry time is 60-120 minutes.
3. the preparation process according to claim 1 for improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, feature exist
In the quality of (3,4- ethylenedioxythiophene) and poly- (styrene sulfonate) poly- in PEDT:PSS dispersion liquid in the step 5
The ratio between be 5.2-6.7:1.
4. the preparation process according to claim 1 for improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, feature exist
In, electrolyte includes solvent and solute in the step 5, solvent be ethylene glycol, diethylene glycol, triethylene glycol, mono- butyrolactone of γ,
One or more of sulfolane, dimethyl sulfoxide, dimethylformamide and dimethyl acetamide.
5. the preparation process according to claim 1 or 4 for improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, feature
It is, electrolyte includes solvent and solute in the step 5, and solute is adipic acid, ethanedioic acid ammonium, ammonium formate, dodecane two
One or more of acid, phthalic acid.
6. the preparation process according to claim 1 or 2 for improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, feature
It is, the time being impregnated in the step 5 is 10-15 minutes.
7. the preparation process according to claim 1 for improving high-voltage solid-state aluminium electrolutic capacitor low-temperature characteristics, feature exist
In using rubber stopper and aluminum hull sealed core packet in the step 6.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676058A (en) * | 2019-08-08 | 2020-01-10 | 益阳艾华富贤电子有限公司 | Preparation process of solid-state aluminum electrolytic capacitor and solid-state aluminum electrolytic capacitor |
| CN113539693A (en) * | 2020-10-13 | 2021-10-22 | 南通一品机械电子有限公司 | Method for reducing loss of high-voltage aluminum electrolytic capacitor |
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| JP2000067643A (en) * | 1998-08-19 | 2000-03-03 | Showa Denko Kk | Polymerizable compound, high molecular solid electrolyte using the same and its application |
| CN102013325A (en) * | 2010-09-22 | 2011-04-13 | 湖南省衡阳华高电子有限公司 | Electrolyte of wide-temperature long-life patch aluminium electrolytic capacitor and preparation method thereof |
| CN102779654A (en) * | 2012-07-25 | 2012-11-14 | 肇庆绿宝石电子有限公司 | Manufacture method of solid electrolyte aluminum electrolytic capacitor |
| CN108172423A (en) * | 2017-11-18 | 2018-06-15 | 湖南艾华集团股份有限公司 | High pressure takeup type solid electrolytic capacitor is impregnated with modification method |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000067643A (en) * | 1998-08-19 | 2000-03-03 | Showa Denko Kk | Polymerizable compound, high molecular solid electrolyte using the same and its application |
| CN102013325A (en) * | 2010-09-22 | 2011-04-13 | 湖南省衡阳华高电子有限公司 | Electrolyte of wide-temperature long-life patch aluminium electrolytic capacitor and preparation method thereof |
| CN102779654A (en) * | 2012-07-25 | 2012-11-14 | 肇庆绿宝石电子有限公司 | Manufacture method of solid electrolyte aluminum electrolytic capacitor |
| CN108172423A (en) * | 2017-11-18 | 2018-06-15 | 湖南艾华集团股份有限公司 | High pressure takeup type solid electrolytic capacitor is impregnated with modification method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676058A (en) * | 2019-08-08 | 2020-01-10 | 益阳艾华富贤电子有限公司 | Preparation process of solid-state aluminum electrolytic capacitor and solid-state aluminum electrolytic capacitor |
| CN110676058B (en) * | 2019-08-08 | 2021-10-08 | 益阳艾华富贤电子有限公司 | Preparation process of solid-state aluminum electrolytic capacitor and solid-state aluminum electrolytic capacitor |
| CN113539693A (en) * | 2020-10-13 | 2021-10-22 | 南通一品机械电子有限公司 | Method for reducing loss of high-voltage aluminum electrolytic capacitor |
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