CN104616894A - Method for producing solid aluminum electrolytic capacitor in use of asymmetric electrolytic paper core cladding - Google Patents
Method for producing solid aluminum electrolytic capacitor in use of asymmetric electrolytic paper core cladding Download PDFInfo
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Abstract
A method for producing a solid aluminum electrolytic capacitor in use of asymmetric electrolytic paper core cladding comprises the steps: clamping electrolytic paper between two guide pins, wherein the electrolytic paper is wider than an electrode foil; two parts, exceeding the electrode foil, at two edges coiled with the electrolytic paper are not the same; the part, exceeding the foil, at one end close to a CP line is more than the other part; and the exceeding part arrives at the joint of the round bars of the guide pins and a flat plate; covering the joint of the round bars of the guide pins and the flat plate in use of the electrolytic paper; and then obtaining the solid aluminum electrolytic capacitor after conventional carbonization, impregnation and polymerization. In the produced solid aluminum electrolytic capacitor, the electrolytic paper covers the junction of the round bars of the guide pins and the flat plate; during the formation of the core cladding, becuase the electrolytic paper is fully absorbed with the electrolyte, the electrolytic paper is clung to the round bars and the flat plate, the gas absorption is damaged and the gas separation to the formed liquid and an aluminum body is avoided or weakened; the junction of the round bars and the flat plate is formed better and the pellumina layer on the surface is covered better.
Description
Technical field
The present invention relates to the preparing technical field of electrolytic capacitor, be specifically related to a kind of manufacture method of solid electrolyte/aluminum electrolytic capacitor.
Background technology
The good characteristic that the renewal product of solid capacitor operation conventional liquid electric capacity has it exclusive, structurally also continue to use the winding method of existing common liquid electric capacity, to rivet over respectively guide pin by cathode foil and anode foil, the interval of two-layered foil is with two electrolytic papers, the width of electrolytic paper is wider than two electrode foils, guarantee batching, to produce and in use procedure, two electrode foils can not contact, form the short circuit of product.Existing technology is the part that electrolytic paper exceeds electrode foil, and both sides are equal, this way, and equipment is ripe, and production operation is convenient, therefore no matter in liquid electric capacity or solid capacitor, has generally used this technology.
But there is inevitable problem in the solid capacitor product of pole low-leakage current, although reason is that guide pin changes into the aluminum lead making round bar part before making, change into round bar part and flat part after guide pin makes, but due in formation process, round bar part and flat part make draw in gentry's process define fresh by the aluminium surface changed into, in formation process, owing to producing gas, entering junction is together angle face, therefore gas is easily collected at this place, forming liquid and aluminium body can separate by the gas gathered, bad when causing junction physics and chemistry effect.After the core bag made with such guide pin, be also present in guide pin and change into same situation in core bag formation process, aluminium body and forming liquid separate in round bar part and flat part by the gas absorption of precipitation, make it to form good aluminium oxide rete.
In the manufacturing process of solid capacitor, because monomer and oxidant and aluminium have wettability.Because of a bit in monomer and oxidant impregnation process, oxidant and monomer can climb to the junction of round bar part and flat part, and form the path of conduction after polymerization, this will increase leakage current.
Summary of the invention
For solving above technical problem, the invention provides a kind of manufacture method of solid electrolyte capacitators.
Technical scheme is as follows:
Utilize asymmetric electrolysis refill bag to produce a method for solid electrolyte/aluminum electrolytic capacitor, carry out as follows:
1) positive pole guide pin is riveted in anode foils, negative electrode guide needle is riveted in Cathode Foil, during riveted joint, paper tinsel is positioned in the middle part of the flat part of guide pin, make the allowance of both sides equal, two guide pins accompany electrolytic paper, electrolytic paper is wider than electrode foil, and it is unequal that two limits that reel exceed electrode foil part, the part that one end close to CP line exceeds paper tinsel is many, exceeds part and will reach the round bar part of guide pin and the junction of flat part.The round bar part of guide pin and the junction of flat part is covered with electrolytic paper;
2) with winder winding around, Cathode Foil multireel some, allow Cathode Foil encase whole core bag, more fixing around clinging with high temperature gummed tape;
3) Jiao Gai of sealing is installed on core to wrap;
4) core bag immerses in forming liquid and carries out repair process, blots unnecessary moisture content after taking-up;
5) the core bag after repair process is carried out carbonization treatment, carburizing temperature 230-280 degree;
6) step of 4 and 5 repeats 2-10 time;
7) core bag again immerses in forming liquid and carries out repair process, puts and clean in deionized water after changing into, and described water is the water that resistivity is greater than 2M;
8) free oxygen agent impregnation; Monomer is EDOT, 3,4 ethylenedioxy thiophenes, oxidant: p-methyl benzenesulfonic acid iron butanol solution
9) be polymerized;
10) load aluminum hull, sealing, burin-in process makes product.
The above-mentioned method utilizing asymmetric electrolysis refill bag to produce solid electrolyte/aluminum electrolytic capacitor, is characterized in that: the impregnation of described step 8) free oxygen agent is:
Core bag is put into respectively the alcoholic solution impregnation of the thiophene of 15-30% percentage by weights, the degree of depth of impregnation is the junction that 1/3 of core bag arrives core bag and Jiao Gai, places after impregnation at 40-60 temperature, removing alcohol;
Core bag after removing alcohol is put into oxidant and is carried out impregnation, and the step of impregnation is first normal pressure impregnation, and the impregnation time is 5 seconds to 5 minutes, the impregnation degree of depth be bottom core bag 2/3 place to the junction of Jiao Gai and core bag;
Core comprises the leaching time and vacuumizes to rear disengaging liquid level, vacuum degree control is between 500 handkerchiefs to 900 handkerchiefs, after being extracted into vacuum, under vacuum condition, core bag is dipped in oxidant, under vacuo impregnation, the impregnation time is 5 seconds to 5 minutes, time to rear vacuum breaker to normal pressure, then carries out impregnation under normal pressure, and the impregnation time is 5 seconds to 5 minutes.
The above-mentioned step be polymerized to is 30-50 degree 2-4 hour, 50-70 degree 0.5-2 hour, 75-95 degree 2-4 hour, 140-160 degree 1.5-3.5 hour; Temperature lifting speed should be not per minute more than 4 degree.
After above-mentioned core packet aggregation completes, then carry out high-temperature heat treatment, treatment temperature is 260 degree of 5-15 minute, and then loads aluminum hull, and sealing, burin-in process makes product.
Beneficial effect: the product electrolytic paper obtained by the inventive method encases the junction of round bar part and flat part, like this in core bag formation process, because electrolytic paper has been filled electrolyte, electricity paper is close to round bar part and flat part, destroy the absorption of gas like this, avoid or reduce gas forming liquid and aluminium body to be separated, make the junction between round bar part and flat part change into better, surface alumina oxide film is deposited and is covered better; After core packet aggregation completes, carry out high-temperature heat treatment again, treatment temperature is 260 degree of 5-15 minute, is removed thoroughly by the impurity inside core bag, avoids solid capacitance in the process used, after producing high temperature, a large amount of impurity evaporates, and hydrolysis produces yellow acid, destroys the oxide-film of core bag, whole electric capacity is corroded, reduces useful life; Technological parameter in unique impregnation method and impregnation, the solid capacitance steady quality of the manufacturing, percent defective is low.
Embodiment
Embodiment 1
Utilize asymmetric electrolysis refill bag to produce a method for solid electrolyte/aluminum electrolytic capacitor, carry out as follows:
1) positive pole guide pin is riveted in anode foils, negative electrode guide needle is riveted in Cathode Foil, during riveted joint, paper tinsel is positioned in the middle part of the flat part of guide pin, make the allowance of both sides equal, two guide pins accompany electrolytic paper, electrolytic paper is wider than electrode foil, reeling, to exceed electrode foil part unequal on two limits, the part that one end close to CP line exceeds paper tinsel is many, exceeds part and will reach the round bar part of guide pin and the junction of flat part, cover the round bar part of guide pin and the junction of flat part with electrolytic paper;
2) with winder winding around, Cathode Foil multireel some, allow Cathode Foil encase whole core bag, more fixing around clinging with high temperature gummed tape;
3) Jiao Gai of sealing is installed on core to wrap;
4) core bag immerses in forming liquid and carries out repair process, blots unnecessary moisture content after taking-up;
5) the core bag after repair process is carried out carbonization treatment, carburizing temperature 230 degree;
6) step of 4 and 5 repeats 2 times;
7) core bag again immerses in forming liquid and carries out repair process, puts and clean in deionized water after changing into, and described water is the water that resistivity is greater than 2M;
8) free oxygen agent impregnation; Core bag is put into respectively the alcoholic solution impregnation of the thiophene of 15% percentage by weight, the degree of depth of impregnation is the junction that 1/3 of core bag arrives core bag and Jiao Gai, places after impregnation at 40 temperature, removing alcohol;
Core bag after removing alcohol is put into oxidant and is carried out impregnation, and the step of impregnation is first normal pressure impregnation, and the impregnation time is 5 seconds, the impregnation degree of depth be bottom core bag 2/3 place to the junction of Jiao Gai and core bag;
Core comprises the leaching time and vacuumizes to rear disengaging liquid level, vacuum degree control is at 500 handkerchiefs, after being extracted into vacuum, under vacuum condition, core bag is dipped in oxidant, under vacuo impregnation, the impregnation time is 5 seconds to 5 minutes, time to rear vacuum breaker to normal pressure, then carries out impregnation under normal pressure, and the impregnation time is 5 seconds to 5 minutes.
9) be polymerized; Polymerization step be 30 degree 2 hours, 50 degree 0.5 hour, 75 degree 2 hours, 140 degree 1.5 hours; Temperature lifting speed should be not per minute more than 4 degree.After described core packet aggregation completes, then carry out high-temperature heat treatment, treatment temperature be 260 degree 5 minutes, and then load aluminum hull, sealing, burin-in process makes product.
10) load aluminum hull, sealing, burin-in process makes product.
Embodiment 2
Utilize asymmetric electrolysis refill bag to produce a method for solid electrolyte/aluminum electrolytic capacitor, carry out as follows:
1) positive pole guide pin is riveted in anode foils, negative electrode guide needle is riveted in Cathode Foil, during riveted joint, paper tinsel is positioned in the middle part of the flat part of guide pin, make the allowance of both sides equal, two guide pins accompany electrolytic paper, electrolytic paper is wider than electrode foil, reeling, to exceed electrode foil part unequal on two limits, the part that one end close to CP line exceeds paper tinsel is many, exceeds part and will reach the round bar part of guide pin and the junction of flat part, cover the round bar part of guide pin and the junction of flat part with electrolytic paper;
2) with winder winding around, Cathode Foil multireel some, allow Cathode Foil encase whole core bag, more fixing around clinging with high temperature gummed tape;
3) Jiao Gai of sealing is installed on core to wrap;
4) core bag immerses in forming liquid and carries out repair process, blots unnecessary moisture content after taking-up;
5) the core bag after repair process is carried out carbonization treatment, carburizing temperature 280 degree;
6) step of 4 and 5 repeats 10 times;
7) core bag again immerses in forming liquid and carries out repair process, puts and clean in deionized water after changing into, and described water is the water that resistivity is greater than 2M;
8) free oxygen agent impregnation; Core bag is put into respectively the alcoholic solution impregnation of the thiophene of 30% percentage by weight, the degree of depth of impregnation is the junction that 1/3 of core bag arrives core bag and Jiao Gai, places after impregnation at 60 temperature, removing alcohol;
Core bag after removing alcohol is put into oxidant and is carried out impregnation, and the step of impregnation is first normal pressure impregnation, and the impregnation time is 5 minutes, the impregnation degree of depth be bottom core bag 2/3 place to the junction of Jiao Gai and core bag;
Core comprises the leaching time and vacuumizes to rear disengaging liquid level, vacuum degree control at 900 handkerchiefs, after being extracted into vacuum, under vacuum condition, be dipped in oxidant by core bag, under vacuo impregnation, the impregnation time is 5 minutes, time to rear vacuum breaker to normal pressure, then carries out impregnation under normal pressure, and the impregnation time is 5 minutes.
9) be polymerized; Polymerization step be 50 degree 4 hours, 70 degree 2 hours, 95 degree 4 hours, 160 degree 3.5 hours; Temperature lifting speed should be not per minute more than 4 degree.After described core packet aggregation completes, then carry out high-temperature heat treatment, treatment temperature be 260 degree 15 minutes, and then load aluminum hull, sealing, burin-in process makes product.
10) load aluminum hull, sealing, burin-in process makes product.
Embodiment 3
Utilize asymmetric electrolysis refill bag to produce a method for solid electrolyte/aluminum electrolytic capacitor, carry out as follows:
1) positive pole guide pin is riveted in anode foils, negative electrode guide needle is riveted in Cathode Foil, during riveted joint, paper tinsel is positioned in the middle part of the flat part of guide pin, make the allowance of both sides equal, two guide pins accompany electrolytic paper, electrolytic paper is wider than electrode foil, reeling, to exceed electrode foil part unequal on two limits, the part that one end close to CP line exceeds paper tinsel is many, exceeds part and will reach the round bar part of guide pin and the junction of flat part, cover the round bar part of guide pin and the junction of flat part with electrolytic paper;
2) with winder winding around, Cathode Foil multireel some, allow Cathode Foil encase whole core bag, more fixing around clinging with high temperature gummed tape;
3) Jiao Gai of sealing is installed on core to wrap;
4) core bag immerses in forming liquid and carries out repair process, blots unnecessary moisture content after taking-up;
5) the core bag after repair process is carried out carbonization treatment, carburizing temperature 250 degree;
6) step of 4 and 5 repeats 6 times;
7) core bag again immerses in forming liquid and carries out repair process, puts and clean in deionized water after changing into, and described water is the water that resistivity is greater than 2M;
8) free oxygen agent impregnation; Core bag is put into respectively the alcoholic solution impregnation of the thiophene of 22% percentage by weight, the degree of depth of impregnation is the junction that 1/3 of core bag arrives core bag and Jiao Gai, places after impregnation at 50 temperature, removing alcohol;
Core bag after removing alcohol is put into oxidant and is carried out impregnation, and the step of impregnation is first normal pressure impregnation, and the impregnation time is 3 minutes, the impregnation degree of depth be bottom core bag 2/3 place to the junction of Jiao Gai and core bag;
Core comprises the leaching time and vacuumizes to rear disengaging liquid level, vacuum degree control at 700 handkerchiefs, after being extracted into vacuum, under vacuum condition, be dipped in oxidant by core bag, under vacuo impregnation, the impregnation time is 3 minutes, time to rear vacuum breaker to normal pressure, then carries out impregnation under normal pressure, and the impregnation time is 3 minutes.
9) be polymerized; Polymerization step be 40 degree 3 hours, 60 degree 1 hour, 80 degree 3 hours, 150 degree 2 hours; Temperature lifting speed should be not per minute more than 4 degree.After described core packet aggregation completes, then carry out high-temperature heat treatment, treatment temperature be 260 degree 10 minutes, and then load aluminum hull, sealing, burin-in process makes product.
10) load aluminum hull, sealing, burin-in process makes product.
Claims (4)
1. utilize asymmetric electrolysis refill bag to produce a method for solid electrolyte/aluminum electrolytic capacitor, carry out as follows:
1) positive pole guide pin is riveted in anode foils, negative electrode guide needle is riveted in Cathode Foil, during riveted joint, paper tinsel is positioned in the middle part of the flat part of guide pin, make the allowance of both sides equal, two guide pins accompany electrolytic paper, electrolytic paper is wider than electrode foil, reeling, to exceed electrode foil part unequal on two limits, the part that one end close to CP line exceeds paper tinsel is many, exceeds part and reaches the round bar part of guide pin and the junction of flat part, cover the round bar part of guide pin and the junction of flat part with electrolytic paper;
2) with winder winding around, Cathode Foil multireel some, allow Cathode Foil encase whole core bag, more fixing around clinging with high temperature gummed tape;
3) Jiao Gai of sealing is installed on core to wrap;
4) core bag immerses in forming liquid and carries out repair process, blots unnecessary moisture content after taking-up;
5) the core bag after repair process is carried out carbonization treatment, carburizing temperature 230-280 degree;
6) step of 4 and 5 is repeated 2-10 time;
7) core bag again immerses in forming liquid and carries out repair process, puts and clean in deionized water after changing into, and described water is the water that resistivity is greater than 2M;
8) free oxygen agent impregnation;
9) be polymerized;
10) load aluminum hull, sealing, burin-in process makes product.
2. utilize asymmetric electrolysis refill bag to produce the method for solid electrolyte/aluminum electrolytic capacitor according to claim 1, it is characterized in that: the impregnation of described step 8) free oxygen agent is:
Core bag is put into respectively the alcoholic solution impregnation of the thiophene of 15-30% percentage by weights, the degree of depth of impregnation is the junction that 1/3 of core bag arrives core bag and Jiao Gai, places after impregnation at 40-60 temperature, removing alcohol;
Core bag after removing alcohol is put into oxidant and is carried out impregnation, and the step of impregnation is first normal pressure impregnation, and the impregnation time is 5 seconds to 5 minutes, the impregnation degree of depth be bottom core bag 2/3 place to the junction of Jiao Gai and core bag;
Core comprises the leaching time and vacuumizes to rear disengaging liquid level, vacuum degree control is between 500 handkerchiefs to 900 handkerchiefs, after being extracted into vacuum, under vacuum condition, core bag is dipped in oxidant, under vacuo impregnation, the impregnation time is 5 seconds to 5 minutes, time to rear vacuum breaker to normal pressure, then carries out impregnation under normal pressure, and the impregnation time is 5 seconds to 5 minutes.
3. utilize asymmetric electrolysis refill bag to produce the method for solid electrolyte/aluminum electrolytic capacitor according to claim 1, it is characterized in that: the step of described step 9) polymerization is 30-50 degree 2-4 hour, 50-70 degree 0.5-2 hour, 75-95 degree 2-4 hour, 140-160 degree 1.5-3.5 hour; Temperature lifting speed should be not per minute more than 4 degree.
4. utilize asymmetric electrolysis refill bag to produce the method for solid electrolyte/aluminum electrolytic capacitor according to claim 1, it is characterized in that: after described core packet aggregation completes, carry out high-temperature heat treatment again, treatment temperature is 260 degree of 5-15 minute, and then load aluminum hull, sealing, burin-in process makes product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510034210.7A CN104616894A (en) | 2015-01-23 | 2015-01-23 | Method for producing solid aluminum electrolytic capacitor in use of asymmetric electrolytic paper core cladding |
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| CN203871186U (en) * | 2014-05-06 | 2014-10-08 | 深圳市科维美电子有限公司 | Novel high-frequency aluminum electrolytic capacitor |
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Application publication date: 20150513 |