CN102891012A - Method for manufacturing amorphous oxidation film aluminum foil - Google Patents
Method for manufacturing amorphous oxidation film aluminum foil Download PDFInfo
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- CN102891012A CN102891012A CN2012103415642A CN201210341564A CN102891012A CN 102891012 A CN102891012 A CN 102891012A CN 2012103415642 A CN2012103415642 A CN 2012103415642A CN 201210341564 A CN201210341564 A CN 201210341564A CN 102891012 A CN102891012 A CN 102891012A
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Abstract
A method for manufacturing an amorphous oxidation film aluminum foil relates to a method for manufacturing a capacitor aluminum foil. The method for manufacturing the amorphous oxidation film aluminum foil comprises the steps of: A, selecting a middle and high pressure corrosive aluminum foil, wherein the thickness of the middle and high pressure corrosive aluminum foil is 75 microns-120 microns, and a corrosive foil of which the aperture is more than 0.05 microns is corroded, and B, carrying out a low-temperature chemical synthesis technology, and forming an AL2O3 formed foil of amorphous crystal. The compact amorphous AL2O3 oxidation film is formed by the method provided by the invention. The method is small in loss, and suitable for changes of pressure drops at two ends of a capacitor.
Description
Technical field
The present invention relates to the manufacture method of capacitor aluminium foil.
Background technology
At present because the fast development of the technology of power electronics, the raising of the speed of the switching frequency of IGBT and metal-oxide-semiconductor, the anti-ripple current that must improve alminium electrolytic condenser could adapt to the needs that power electronics develops.In addition, also can improve some anti-ripple currents owing to improving the aluminium foil proof voltage, reduce the aluminium foil specific volume and also can improve anti-ripple current, but effect be also not obvious, and cause the waste of many energy.For example the aluminium foil specific volume of 400WV, 530uf is at 0.68uf/cm
2, every square metre of needs 60 degree electricity; The aluminium foil specific volume of 450WV, 620uf is at 0.54uf/cm
2, every square metre of needs 80 degree electricity.Single for circuit, sometimes do not need unnecessary operating voltage, general 220V filtering is even direct current 220V * 1.414=311V voltage becomes 260V, direct current is 260 * 1.414=368V, therefore capacitor working is pressed when too high, and voltage is unnecessary, particularly for the large circuit of electric capacity both end voltage variable quantity, key is the variation in voltage amount that the electric capacity two ends allow, for example: electricity-saving lamp circuit, stroboscopic lamp circuit, inverter type welder circuit etc.Increase capacitance and can cause the high order harmonic component of finished product to increase, equally also electrical network has been caused pollution, for example: the single-phase inversion welding machine, 4 400V 470uf are adopted in 160A output, every electric capacity pressure drop is about 60V when work, and according to energy law, the Power supply of electric capacity is 1/2CV
2, be 1/2 * 470 ÷ 10
6* 60 * 60 * 4=3.38 joule if the pressure drop of electric capacity allows for 150V, so just can adopt 4, the electrochemical capacitor of 80uf.
Existing technique is that poach, one-level change into to Pyatyi and change into, and the poach temperature changes into general hexanedioic acid ammonium commonly used, diammonium hydrogen phosphate, ammonium pentaborate or boric acid technique more than 90 ℃, and tank liquor temperature is more than 80 ℃ when changing into.Because existing mesohigh aluminium foil is the high temperature chemical synthesis technology, forms γ type AL
2O
3The dense form oxide-film, although the dense form oxide-film is form compact and stable, but internal resistance is large, the caloric value when causing voltage fluctuation is large, causes the inefficacy of electric capacity, the excessive circuit environment of the rate of change of improper electric capacity two ends pressure drop.
Therefore improve the inner resistance of anode foils, just can improve in a large number the application feature of existing electrochemical capacitor, and save a large amount of energy.
Summary of the invention
The object of the present invention is to provide the manufacture method of the amorphous oxide film aluminium foil that a kind of loss is little, internal resistance is little.
Purpose of the present invention can realize like this, designs a kind of manufacture method of amorphous oxide film aluminium foil, comprises step:
A, to select mesohigh corrosive aluminum foil, the thickness of mesohigh corrosive aluminum foil be 75um～120um, and the corrosion aperture is at the etched foil more than 0.05 micron;
B, carry out the low temperature chemical synthesis technology, form the AL of imperfect crystal formation
2O
3Waste Acid From Hua Cheng Foil.
Further, described low temperature chemical synthesis technology comprises:
1. oxalic acid treatment: the temperature of oxalic acid solution is at 10 ℃～30 ℃, and oxalic acid solubility is 1%～10%;
2. carry out at least three grades of formation process, formation process adopts ammonium pentaborate or boric acid technique, and the hydraulic control of tank liquor temperature is built in 20 ℃～60 ℃.
Preferably, the hydraulic control of tank liquor temperature is built in 30 ℃～55 ℃.
The present invention forms unformed AL
2O
3Fine and close oxide-film, loss is little, is fit to the variation of electric capacity two ends pressure drop.
Embodiment
The invention will be further described below in conjunction with embodiment.
A kind of manufacture method of amorphous oxide film aluminium foil comprises step:
A, to select mesohigh corrosive aluminum foil, the thickness of mesohigh corrosive aluminum foil be 75um～120um, and the corrosion aperture is at the etched foil more than 0.05 micron;
B, carry out the low temperature chemical synthesis technology, form the AL of imperfect crystal formation
2O
3Waste Acid From Hua Cheng Foil.
Low temperature chemical synthesis technology wherein comprises: 1. oxalic acid treatment: the temperature of oxalic acid solution is at 10 ℃～30 ℃, and oxalic acid solubility is between 1%～10%; 2. carry out at least three grades of formation process, formation process adopts ammonium pentaborate or boric acid technique, and the chemical solution in the formation process adopts ammonium pentaborate of the prior art or boric acid tank liquor, but liquid temperature is controlled at below 60 ℃, be controlled at 30 ℃～55 ℃ better.Preferably, adopt Pyatyi to change into, tank liquor is existing ammonium pentaborate or boric acid tank liquor, and the tank liquor liquid temperature is controlled at below 60 ℃, is controlled at 30 ℃～55 ℃ better, as to change into as required aluminium foil voltages, carries out step by step voltage and changes into.
Take the 530VF+400WV formed aluminum foil as example, normal aluminium foil specific volume 0.68uf/cm
2, aluminium foil specific volume 0.42uf/cm of the present invention
2
Inventive embodiments: adopt the Pyatyi formation process, concrete process flow be oxalic acid pre-treatment → one-level change into → secondary changes into → three grades change into → level Four changes into → Pyatyi changes into → ammonium dihydrogen phosphate reprocessing → oven dry.
One, does the loss angle test at standard test liquid (ammonium pentaborate that contains 80 grams in 1000 ml pure waters).
| 40HZ tgδ | 60HZ tgδ | 120HZ tgδ | 1kHZ tg δ | |
| Common | 3.1% | 3.1% | 3.3% | 8.7% |
| The present invention | 3.2% | 3.3% | 3.2% | 5.6% |
Two, at 1.9ms/cm
2The electricity electrolyte of leading in do the loss angle test.
| 40HZ tg δ | 60HZ tgδ | 120HZ tgδ | 1kHZ tg δ | |
| Common | 5.4% | 6.4% | 8.7% | 59.7% |
| The present invention | 6.6% | 6.3% | 6.4% | 25.4% |
Above-mentioned two kinds of aluminium foils are made electrochemical capacitor, take 360V, 50uf stroboscopic lamp electric capacity as example.The data of the electric capacity that common paper tinsel is made are: 530V+75um, 0.36uf/m
2120HZ is tg δ=2.8% below 25 ℃.The data of the electric capacity that aluminium foil of the present invention is made are: 520V+75um, 0.36uf/m
2120HZ is tg δ=1.8% below 25 ℃.
The electrochemical capacitor that common paper tinsel is made puts entirely that temperature rise is 105 ℃ in 2 hours entirely filling, and the electrochemical capacitor that aluminium foil of the present invention is made puts entirely that temperature rise is 55 ℃ in 2 hours entirely filling.
The aluminium foil that the present invention makes can be applicable to electric-saving lamp electric capacity, stroboscopic lamp electric capacity, condenser type spot welder electric capacity, inverter type welder line capacitance.The electrolytic capacitor that adopts the present invention to make is applied in the industries such as solar wind power inversion, the active reactive power compensation of SVG, direct current electric transmission and transformation, air conditioning frequency converter.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention; make without departing from the inventive concept of the premise some alternative or obvious modification that are equal to; and performance or purposes are identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of submitting to.
Claims (5)
1. the manufacture method of an amorphous oxide film aluminium foil is characterized in that, comprises step:
A, to select mesohigh corrosive aluminum foil, the thickness of mesohigh corrosive aluminum foil be 75um～120um, and the corrosion aperture is at the etched foil more than 0.05 micron;
B, carry out the low temperature chemical synthesis technology, form the AL of imperfect crystal formation
2O
3Waste Acid From Hua Cheng Foil.
2. the manufacture method of amorphous oxide film aluminium foil according to claim 1 is characterized in that, described low temperature chemical synthesis technology comprises:
1. oxalic acid treatment: the temperature of oxalic acid solution is at 10 ℃～30 ℃, and oxalic acid solubility is 1%～10%;
2. carry out at least three grades of formation process, formation process adopts ammonium pentaborate or boric acid technique, and the hydraulic control of tank liquor temperature is built in 20～60 ℃.
3. the manufacture method of amorphous oxide film aluminium foil according to claim 2, it is characterized in that: described formation process is that Pyatyi changes into.
4. the manufacture method of amorphous oxide film aluminium foil according to claim 2, it is characterized in that: the hydraulic control of described tank liquor temperature is built in 30 ℃～55 ℃.
5. the manufacture method of amorphous oxide film aluminium foil according to claim 3 is characterized in that: the low temperature chemical synthesis technology comprises that oxalic acid pre-treatment, one-level change into, secondary changes into, three grades change into, level Four changes into, Pyatyi changes into, the ammonium dihydrogen phosphate reprocessing,
Oxalic acid pre-treatment, solution are 2% oxalic acid solution, and 15 ℃ of solution temperatures, formation voltage are 30V, and the time of changing into is 5 minutes;
One-level changes into, and solution is 6% boric acid+0.5% ammonium pentaborate solution, and 35 ℃ of solution temperatures, formation voltage are 180V, and the time of changing into is 5 minutes;
Secondary changes into, and solution is 6% boric acid+0.4% ammonium pentaborate solution, and 35 ℃ of solution temperatures, formation voltage are 300V, and the time of changing into is 5 minutes;
Three grades change into, and solution is 6% boric acid+0.3% ammonium pentaborate solution, and 35 ℃ of solution temperatures, formation voltage are 400V, and the time of changing into is 5 minutes;
Level Four changes into, and solution is 6% boric acid+0.2% ammonium pentaborate solution, and 35 ℃ of solution temperatures, formation voltage are 480V, and the time of changing into is 10 minutes;
Pyatyi changes into, and solution is 6% boric acid+0.1% ammonium pentaborate solution, and 35 ℃ of solution temperatures, formation voltage are 520V, and the time of changing into is 20 minutes;
Ammonium dihydrogen phosphate reprocessing, solution are 0.5% ammonium dihydrogen phosphate, 60 ℃ of solution temperatures, and the time of changing into is 5 minutes.
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| CN2012103415642A CN102891012A (en) | 2012-09-14 | 2012-09-14 | Method for manufacturing amorphous oxidation film aluminum foil |
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| CN2012103415642A CN102891012A (en) | 2012-09-14 | 2012-09-14 | Method for manufacturing amorphous oxidation film aluminum foil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774197A (en) * | 2014-01-06 | 2014-05-07 | 广西贺州市桂东电子科技有限责任公司 | Medium and high-pressure etched foil post-treatment method |
| CN110208304A (en) * | 2019-06-17 | 2019-09-06 | 新疆众和股份有限公司 | A kind of analysis method of aluminium foil surface layer porous oxide film microscopic appearance |
Citations (4)
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|---|---|---|---|---|
| JP2000348984A (en) * | 1999-06-08 | 2000-12-15 | Nichicon Corp | Manufacture of electrode foil for aluminum electrolytic capacitor |
| CN101030487A (en) * | 2006-12-22 | 2007-09-05 | 东莞市东阳光电容器有限公司 | Production of electrolytic capacitor anode aluminum foil |
| CN101246779A (en) * | 2008-02-22 | 2008-08-20 | 乳源瑶族自治县东阳光化成箔有限公司 | Production method of medium and high pressure formed foil |
| CN101290830A (en) * | 2007-04-19 | 2008-10-22 | 朱健雄 | Production method of aluminum electrolysis capacitor |
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2012
- 2012-09-14 CN CN2012103415642A patent/CN102891012A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000348984A (en) * | 1999-06-08 | 2000-12-15 | Nichicon Corp | Manufacture of electrode foil for aluminum electrolytic capacitor |
| CN101030487A (en) * | 2006-12-22 | 2007-09-05 | 东莞市东阳光电容器有限公司 | Production of electrolytic capacitor anode aluminum foil |
| CN101290830A (en) * | 2007-04-19 | 2008-10-22 | 朱健雄 | Production method of aluminum electrolysis capacitor |
| CN101246779A (en) * | 2008-02-22 | 2008-08-20 | 乳源瑶族自治县东阳光化成箔有限公司 | Production method of medium and high pressure formed foil |
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| 徒振秋: "铝电解电容器用阳极化成箔的选用", 《电子元件与材料》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774197A (en) * | 2014-01-06 | 2014-05-07 | 广西贺州市桂东电子科技有限责任公司 | Medium and high-pressure etched foil post-treatment method |
| CN110208304A (en) * | 2019-06-17 | 2019-09-06 | 新疆众和股份有限公司 | A kind of analysis method of aluminium foil surface layer porous oxide film microscopic appearance |
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