CN105355435A - Current shield plate and method for manufacturing electrode foil therethrough - Google Patents
Current shield plate and method for manufacturing electrode foil therethrough Download PDFInfo
- Publication number
- CN105355435A CN105355435A CN201510912001.8A CN201510912001A CN105355435A CN 105355435 A CN105355435 A CN 105355435A CN 201510912001 A CN201510912001 A CN 201510912001A CN 105355435 A CN105355435 A CN 105355435A
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- Prior art keywords
- shielding plate
- current shielding
- shape
- slit
- inverted
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- 239000011888 foil Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 230000007797 corrosion Effects 0.000 claims abstract description 11
- 238000005530 etching Methods 0.000 claims description 23
- 239000005030 aluminium foil Substances 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 239000008151 electrolyte solution Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000002203 pretreatment Methods 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 6
- 230000036647 reaction Effects 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 238000005868 electrolysis reaction Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/055—Etched foil electrodes
-
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention discloses a current shield plate, and the shield plate is located on an electrode plate for electrolytic corrosion. The shield plate is provided with slot-shaped openings, and the openings are connected to one point of a central part in the width direction of an aluminum foil through an end part. Moreover, the openings are arranged in a V shape in an extension manner in the up/down direction of the electrode plate. Meanwhile, the invention relates to a method for manufacturing the electrode foil through employing the shield plate. The method is advantageous in that a produced electrode foil is high in capacity, and a foil surface is good in capacity consistency.
Description
Technical field
The present invention relates to a kind of current shielding plate and use current shielding plate to manufacture the method for electrode foil.
Background technology
Utilize the spot corrosion of aluminium foil in hydrochloric acid solution and the interchange galvanic corrosion engineering of carrying out. can improve the specific area of aluminum electric pole foil significantly, be the key that aluminium electrolytic capacitor realizes miniaturized, high performance and chip type.
In traditional power-up procedures, electrolytic corrosion produces a large amount of hydrogen, and reaction bubble is in electrode plate surface attachment, stagnation, and cause heat of reaction in tank liquor to carry outward in time, each point reaction temperature is uneven; Simultaneously current density also cannot stability contorting, therefore cannot realize electrode foil high power capacity, and destroy the consistency of electrode foil capacity, cause capacity tolerance large.
Summary of the invention
The object of the invention is to overcome above weak point and the special mode that powers up provided, the electrode foil static capacity produced is high, and paper tinsel face good capacitance consistency.
Object of the present invention is achieved through the following technical solutions: a kind of current shielding plate, current shielding plate is positioned on electrolytic corrosion battery lead plate, current shielding plate is the opening of slit-shaped, on aluminium foil Width by end be connected to central portion a bit, and at the inverted "eight" shape shape that the above-below direction of battery lead plate is expanded.
Preferably, the width of slit-shaped openings is impartial.
Preferably, the inverted "eight" shape shape angle of the slit-shaped openings of current shielding plate is 60 ~ 150 °.
Preferably, inverted "eight" shape shape bottom interval width is 1 ~ 10cm.
Preferably, slit-shaped openings is deepened along with the liquid level of electrolyte, and the amplitude of opening increases gradually.
Preferably, the amplitude peak of slit-shaped openings inverted "eight" shape shape is 1 ~ 10cm.
Use current shielding plate to manufacture a method for electrode foil, step is as follows:
A, the soft state aluminium foil of 104 μm of thickness using purity 99.99%, have high cubic texture, pre-treatment adopts the sodium hydroxide solution of 0.2mol/L to soak 1 minute, then etching bath is put into, cut into wide 50 centimetres of aluminium foils, soak the battery lead plate of length 150 centimetres in etching bath, battery lead plate increases current shielding plate, containing the concentration being mixed with hydrochloric acid 4mol/L in the electrolytic solution of 50 DEG C in etching bath, sulfuric acid 1mol/L, average current density is 0.2A/cm
2alternating current, by cell reaction in 50 seconds produce spongiform initial pit;
The slit-shaped openings of B, above-mentioned current shielding plate, the inverted "eight" shape shape angle of slit-shaped openings is 60 °, 90 °, 120 ° and 150 ° contrast, inverted "eight" shape shape bottom interval width is 6cm in addition, and " eight " word amplitude peak of falling is 3cm;
C, then, carries out repeatedly reaming corrosion, electrolytic solution mixing hydrochloric acid 3mol/L, sulfuric acid 1mol/L, average current density 0.15A/cm in 5 etching baths
2alternating current, every grade powers up 90 seconds;
D, above-mentioned etched foil after cleaning, change into according to 20V, output finished product.
Preferably, the direction that aluminium foil broadens gradually towards the slit-shaped openings amplitude of current shielding plate is passed through.
In sum, the present invention has the following advantages: reacting gas can be prevented in the stagnation of battery lead plate, attachment, discharge reacting gas efficiently in time, ensure that tank liquor internal reaction temperature is even, Simultaneous Stabilization controls the current density in etching bath, produce static capacity large, and the electrode foil of good capacitance consistency.
Accompanying drawing explanation
Fig. 1 is the generalized section of the etching bath of the embodiment of the present invention;
Fig. 2 is the ideograph of the electric current shield of prior art;
Fig. 3 is the ideograph of inventive embodiments electric current shield;
Number in the figure: 1-current shielding plate, 2-battery lead plate, 3-aluminium foil, 4-etching bath.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
A kind of current shielding plate as shown in Figure 3, current shielding plate 1 is positioned on electrolytic corrosion battery lead plate 2, current shielding plate 1 is the opening of slit-shaped, on aluminium foil Width by end be connected to central portion a bit, and at the inverted "eight" shape shape that the above-below direction of battery lead plate 2 is expanded, the width of slit-shaped openings is impartial, the inverted "eight" shape shape angle of the slit-shaped openings of current shielding plate 1 is 60 ~ 150 °, inverted "eight" shape shape bottom interval width is 1 ~ 10cm, slit-shaped openings is deepened along with the liquid level of electrolyte, the amplitude of opening increases gradually, the amplitude peak of slit-shaped openings inverted "eight" shape shape is 1 ~ 10cm.
A kind of method using current shielding plate to manufacture electrode foil, step is as follows: use purity 99.99%, have the soft state aluminium foil 3 of 104 μm of thickness of high cubic texture, pre-treatment adopts the sodium hydroxide solution of 0.2mol/L to soak 1 minute, then etching bath 4 is put into, cut into wide 50 centimetres of aluminium foils 3, the battery lead plate 2 of length 150 centimetres is soaked in etching bath 4, battery lead plate 2 increases current shielding plate 1, containing the concentration being mixed with hydrochloric acid 4mol/L in the electrolytic solution of 50 DEG C in etching bath 4, sulfuric acid 1mol/L, average current density is 0.2A/cm
2alternating current, by cell reaction in 50 seconds produce spongiform initial pit; The slit-shaped openings of above-mentioned current shielding plate 1, the inverted "eight" shape shape angle of slit-shaped openings is 60 °, 90 °, 120 ° and 150 ° and contrasts, inverted "eight" shape shape bottom interval width is 6cm in addition, and " eight " word amplitude peak of falling is 3cm; Then, in 5 etching baths 4, repeatedly reaming corrosion is carried out, electrolytic solution mixing hydrochloric acid 3mol/L, sulfuric acid 1mol/L, average current density 0.15A/cm
2alternating current, every grade powers up 90 seconds; Above-mentioned etched foil after cleaning, changes into according to 20V, output finished product, and the direction that aluminium foil 3 broadens gradually towards the slit-shaped openings amplitude of current shielding plate 1 is passed through.
Embodiment 1 ~ 4, the angle changing rate of the inverted "eight" shape shape of slit-shaped openings:
In embodiment 1 ~ 4, use purity 99.99%, have the soft state aluminium foil of 104 μm of thickness of high cubic texture, pre-treatment adopts the sodium hydroxide solution of 0.2mol/L to soak 1 minute.Secondly, in Fig. 1 etching bath 4, wide 50 centimetres of aluminium foils 3, soak the battery lead plate 2 of length 150 centimetres, battery lead plate 2 increases the concentration being mixed with hydrochloric acid 4mol/L in the electrolytic solution of the current shielding plate shown in Fig. 31,50 DEG C, sulfuric acid 1mol/L, average current density is 0.2A/cm
2alternating current, spongiform initial pit can be produced by cell reaction in 50 seconds.(electrolysis)
The slit-shaped openings of above-mentioned current shielding plate 1, the angle of the shape of inverted "eight" shape shown in table 1, by 60 °, 90 °, 120 ° and 150 ° contrast, and in addition, inverted "eight" shape shape bottom interval width is 6cm, and " eight " word amplitude peak of falling is 3cm.
Then, in 5 etching baths 4, repeatedly reaming corrosion is carried out, electrolytic solution mixing hydrochloric acid 3mol/L, sulfuric acid 1mol/L, average current density 0.15A/cm
2alternating current, every grade powers up 90 seconds.(multistage electrolysis)
Above-mentioned etched foil after cleaning, changes into according to 20V, output finished anode foil sample.
Embodiment 3, below 5 ~ 8 inverted "eight" shape shapes, interval width compares:
Embodiment 3, in 5 ~ 8, the aluminium foil 3 that embodiment 1 is the same, after using same pre-treatment, in Fig. 1 etching bath 4, has carried out an electrolysis under the condition that embodiment 1 is same.
The slit-shaped openings of above-mentioned current shielding plate 1, the angle 120 ° of the shape of inverted "eight" shape shown in table 1 is fixed, and " eight " word amplitude peak of falling is 3cm, and inverted "eight" shape shape bottom interval width is separately, and 2,4,6,8,10 centimetres are compared.
Then, in 5 etching baths 4, condition has similarly to Example 1 carried out multistage electrolysis.
Above-mentioned etched foil after cleaning, changes into according to 20V, output finished anode foil sample.
Embodiment 3,9 ~ 11 inverted "eight" shape shape amplitude peaks compare
Embodiment 3, in 9 ~ 11, the aluminium foil 3 that embodiment 1 is the same, after using same pre-treatment, in Fig. 1 etching bath 4, the same condition of embodiment 1 has carried out an electrolysis.
The slit-shaped openings of above-mentioned current shielding plate 1, the angle 120 ° of the shape of inverted "eight" shape shown in table 1 is fixed, and inverted "eight" shape shape bottom interval width 6cm fixes, and " eight " word amplitude peak of falling is 3,5, and 7,9 centimetres are compared.
Then, in 5 etching baths 4, condition has similarly to Example 1 carried out multistage electrolysis.
Above-mentioned etched foil after cleaning, changes into according to 20V, output finished anode foil sample.
Comparative example is, the aluminium foil 3 that embodiment 1 is the same, and after using same pre-treatment, in Fig. 1 etching bath 4, the same condition of embodiment 1 has carried out an electrolysis.
Above-mentioned comparative example current shielding plate 1 is as shown in Figure 2, " V " font, and angle 120 ° is fixed, and " V " font amplitude peak is 7 centimetres, and then, in 5 etching baths 4, condition has similarly to Example 1 carried out multistage electrolysis.Above-mentioned etched foil after cleaning, changes into according to 20V, output finished anode foil sample.
Table 1:
Above-described embodiment 1 ~ 11 relatively falls " eight " word current barricade 1 in different angles, when width and amplitude peak, each electrode foil capacity and capacity scattered error situation, wherein capacity is the mean value of electrode foil 10 capacity, and capacity scattered error is that maximum capacity deducts minimum value again divided by mean value.
Embodiment 1 ~ 4, the angle changing rate of the inverted "eight" shape shape of slit-shaped openings:
Along with the raising of inverted "eight" shape shape angle, electrode foil capacity first raises and reduces, and capacity scattered error is first reduce to rise afterwards, and when angle is 120o, electrode foil capacity is the highest, and paper tinsel face consistency is best.
Embodiment 3,5 ~ 8 inverted "eight" shape shape bottom interval widths compare:
Along with the increase gradually of inverted "eight" shape shape bottom interval width, capacity first has small elevation then to decay, and capacity scattered error is first reduce to rise afterwards, and when interval width is 6cm, electrode foil capacity is the highest, and paper tinsel face consistency is best.
Embodiment 3,9 ~ 11 fall " eight " word amplitude peak compare
Along with the lifting of inverted "eight" shape shape amplitude peak, electrode foil capacity is without significant change, and capacity scattered error shows as first to reduce and rises afterwards, and when amplitude peak reaches 7cm, paper tinsel face consistency is best.
Comparative example adopts " V " character form structure, and angle 120 ° is fixed, and " V " font amplitude peak is 7 centimetres.When adopting this kind of structure, tank liquor reaction bubble gathers too much in the middle part of battery lead plate, medium temperature is caused to raise, reaction is violent, occurs middle part capacity phenomenon on the low side, causes paper tinsel face Capacity uniformity poor, comparative example and embodiment 10 contrast, although capacity difference is apart from not obvious, comparative example capacity scattered error is apparently higher than embodiment 10, and paper tinsel face consistency is poor.
Claims (8)
1. a current shielding plate, described current shielding plate (1) is positioned on electrolytic corrosion battery lead plate (2), it is characterized in that: the opening that described current shielding plate (1) is slit-shaped, on aluminium foil Width by end be connected to central portion a bit, and at the inverted "eight" shape shape that the above-below direction of battery lead plate (2) is expanded.
2. a kind of current shielding plate according to claim 1, is characterized in that: the width of described slit-shaped openings is impartial.
3. a kind of current shielding plate according to claim 1 and 2, is characterized in that: the inverted "eight" shape shape angle of the slit-shaped openings of described current shielding plate (1) is 60 ~ 150 °.
4. a kind of current shielding plate according to claim 3, is characterized in that: described inverted "eight" shape shape bottom interval width is 1 ~ 10cm.
5. a kind of current shielding plate according to claim 3, is characterized in that: described slit-shaped openings is deepened along with the liquid level of electrolyte, and the amplitude of opening increases gradually.
6. a kind of current shielding plate according to claim 5, is characterized in that: the amplitude peak of described slit-shaped openings inverted "eight" shape shape is 1 ~ 10cm.
7. use current shielding plate to manufacture a method for electrode foil, it is characterized in that: step is as follows:
A, the soft state aluminium foil (3) of 104 μm of thickness using purity 99.99%, have high cubic texture, pre-treatment adopts the sodium hydroxide solution of 0.2mol/L to soak 1 minute, then etching bath (4) is put into, cut into wide 50 centimetres of aluminium foils (3), the battery lead plate (2) of length 150 centimetres is soaked in etching bath (4), at battery lead plate (2) upper increase current shielding plate (1), containing the concentration being mixed with hydrochloric acid 4mol/L in the electrolytic solution of 50 DEG C in etching bath (4), sulfuric acid 1mol/L, average current density is 0.2A/cm
2alternating current, by cell reaction in 50 seconds produce spongiform initial pit;
The slit-shaped openings of B, above-mentioned current shielding plate (1), the inverted "eight" shape shape angle of slit-shaped openings is 60 °, 90 °, 120 ° and 150 ° contrast, inverted "eight" shape shape bottom interval width is 6cm in addition, and " eight " word amplitude peak of falling is 3cm;
C, then, carries out repeatedly reaming corrosion, electrolytic solution mixing hydrochloric acid 3mol/L, sulfuric acid 1mol/L, average current density 0.15A/cm in 5 etching baths (4)
2alternating current, every grade powers up 90 seconds;
D, above-mentioned etched foil after cleaning, change into according to 20V, output finished product.
8. a kind of current shielding plate that uses according to claim 7 manufactures the method for electrode foil, it is characterized in that: the direction that described aluminium foil (3) broadens gradually towards the slit-shaped openings amplitude of current shielding plate (1) is passed through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912001.8A CN105355435A (en) | 2015-12-11 | 2015-12-11 | Current shield plate and method for manufacturing electrode foil therethrough |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912001.8A CN105355435A (en) | 2015-12-11 | 2015-12-11 | Current shield plate and method for manufacturing electrode foil therethrough |
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| Publication Number | Publication Date |
|---|---|
| CN105355435A true CN105355435A (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510912001.8A Pending CN105355435A (en) | 2015-12-11 | 2015-12-11 | Current shield plate and method for manufacturing electrode foil therethrough |
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| Country | Link |
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| CN (1) | CN105355435A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628991A (en) * | 2019-01-07 | 2019-04-16 | 广西贺州市桂东电子科技有限责任公司 | Anti-electrocorrosion device before mesohigh electric aluminum foil hair engaging aperture |
| CN113611548A (en) * | 2021-08-04 | 2021-11-05 | 广东联盈控电子科技有限公司 | Current shielding plate, forming device for forming foil and forming method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008159922A (en) * | 2006-12-25 | 2008-07-10 | Nichicon Corp | Method of manufacturing aluminum electrode foil for electrolytic capacitor |
| CN103578766A (en) * | 2012-07-23 | 2014-02-12 | 东莞市长安东阳光铝业研发有限公司 | Turning speed improving process during corrosion for electronic plain foil |
| CN204303565U (en) * | 2014-12-10 | 2015-04-29 | 四川日科电子有限公司 | A kind of conductive plate |
| CN205177619U (en) * | 2015-12-11 | 2016-04-20 | 南通海星电子股份有限公司 | Electric current shield plate |
-
2015
- 2015-12-11 CN CN201510912001.8A patent/CN105355435A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008159922A (en) * | 2006-12-25 | 2008-07-10 | Nichicon Corp | Method of manufacturing aluminum electrode foil for electrolytic capacitor |
| CN103578766A (en) * | 2012-07-23 | 2014-02-12 | 东莞市长安东阳光铝业研发有限公司 | Turning speed improving process during corrosion for electronic plain foil |
| CN204303565U (en) * | 2014-12-10 | 2015-04-29 | 四川日科电子有限公司 | A kind of conductive plate |
| CN205177619U (en) * | 2015-12-11 | 2016-04-20 | 南通海星电子股份有限公司 | Electric current shield plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628991A (en) * | 2019-01-07 | 2019-04-16 | 广西贺州市桂东电子科技有限责任公司 | Anti-electrocorrosion device before mesohigh electric aluminum foil hair engaging aperture |
| CN113611548A (en) * | 2021-08-04 | 2021-11-05 | 广东联盈控电子科技有限公司 | Current shielding plate, forming device for forming foil and forming method |
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Application publication date: 20160224 |