CN110223844B - Ultrahigh voltage lead type capacitor and preparation method thereof - Google Patents

Ultrahigh voltage lead type capacitor and preparation method thereof Download PDF

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CN110223844B
CN110223844B CN201910248803.1A CN201910248803A CN110223844B CN 110223844 B CN110223844 B CN 110223844B CN 201910248803 A CN201910248803 A CN 201910248803A CN 110223844 B CN110223844 B CN 110223844B
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voltage
capacitor
ammonium
core package
aging
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CN110223844A (en
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丰骏
钱永才
丁继华
徐永华
季张林
沙雪飞
成俊烽
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NANTONG JIANGHAI CAPACITOR CO Ltd
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NANTONG JIANGHAI CAPACITOR CO Ltd
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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
    • H01G9/022—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
    • H01G9/022—Electrolytes; Absorbents
    • H01G9/035—Liquid electrolytes, e.g. impregnating materials
    • 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
    • H01G9/004—Details
    • H01G9/08—Housing; Encapsulation
    • H01G9/12—Vents or other means allowing expansion
    • 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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  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Electrochemistry (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

The invention discloses an ultrahigh-voltage lead type capacitor and a preparation method thereof, wherein the ultrahigh-voltage lead type capacitor comprises an aluminum shell, a core package, a rubber plug and an outgoing line, the outgoing line is fixedly connected with the core package, the rubber plug is arranged at the end part of an electrode close to the core package, the outgoing line, the rubber plug and the core package are sequentially arranged in the aluminum shell from top to bottom, the core package comprises aluminum foil and electrolytic paper, the core package is formed by laminating the aluminum foil and the electrolytic paper together and winding, the core package is also impregnated by electrolyte, the electrolyte comprises solute, solvent and additive, the weight ratio of the solute is 15-25%, the weight ratio of the solvent is 60-70%, the weight ratio of the additive is 5-15%, and the ultrahigh-voltage lead type capacitor has the advantages of being capable of reaching 600V at rated voltage, stable in work and the like.

Description

Ultrahigh voltage lead type capacitor and preparation method thereof
Technical Field
The invention relates to the field of capacitors, in particular to an ultrahigh voltage lead type capacitor and a preparation method thereof.
Background
The capacitor is one of three electronic passive components, is an indispensable basic component in an electronic circuit, accounts for about 40% of the using amount of all electronic components, is also called as a capacitor, is a component capable of storing a certain charge amount, and is widely applied to aspects such as DC blocking, coupling, bypassing, filtering and the like in the circuit.
The application fields of the capacitor comprise a military part and a civil part, wherein the civil market is divided into a civil industrial market and a civil consumption market. The capacitor is applied to weaponry such as ship aviation, aerospace, weaponry, electronic counterweaponry and the like in the military field, and the civil industry comprises the fields of system communication equipment, industrial control equipment, medical electronic equipment, rail transit, precise instruments and automotive electronics; the civil consumption field comprises the fields of mobile phones, computers, digital cameras, recording equipment and the like.
According to the dielectric material used by the capacitor, the product can be divided into four types of ceramic capacitor, aluminum electrolytic capacitor, tantalum electrolytic capacitor and film capacitor, the four types of capacitors are slightly different in characteristics and specific functions, for example, the ceramic capacitor is mainly applied to a high-frequency environment and has the functions of high-frequency coupling, high-frequency bypass and the like, the aluminum and tantalum capacitors are mainly applied to a low-frequency environment and have the functions of power supply filtering, A \ D conversion and the like, the film capacitor is widely applied to an analog circuit due to excellent frequency characteristics and small dielectric loss, the ceramic capacitor and the aluminum electrolytic capacitor occupy the main market share, the ceramic capacitor has the highest market share among the four types of main capacitors and reaches 43%, and the aluminum electrolytic capacitor has the market share reaching 34%.
It can be seen that the aluminum electrolytic capacitor occupies a large share in the whole market, but although the aluminum electrolytic capacitor has a large variety of voltages and types, there is no high-voltage capacitor which can reach a rated voltage of 600V and an operating temperature of 105 ℃ in the category of the ultra-high voltage lead type capacitor.
Chinese patent CN200910054661.1(600V extra-high voltage aluminum electrolytic capacitor working electrolyte and its preparation and application) discloses an aluminum electrolytic capacitor working electrolyte, which comprises solvent, solute and additive, but the electrolyte can only meet the capacitor life requirement of 90 ℃, so that an extra-high voltage lead type capacitor and its preparation method are provided, which can meet the life requirement of 105 ℃, and make up for the product deficiency of 105 ℃ lead type capacitor in the high voltage field.
Disclosure of Invention
The invention aims to solve the technical problem that the rated voltage of a capacitor with the working temperature of 105 ℃ cannot reach 600V due to the fact that the electrolyte proportioning technology and manufacturing materials such as related capacitor part matching are not mature, and therefore a lead-type ultra-high voltage capacitor and a preparation method are provided, the ultra-high voltage capacitor comprises an aluminum shell, a core package, a rubber plug and a lead-out wire, the lead-out wire is fixedly connected with the core package, the rubber plug is arranged at the end part of the lead-out wire close to the core package, the lead-out wire, the rubber plug and the core package are sequentially arranged in the aluminum shell from top to bottom,
the core package comprises aluminum foil and electrolytic paper, the core package is formed by laminating the aluminum foil and the electrolytic paper together and winding, the core package is also impregnated by electrolyte,
the electrolyte comprises a solute, a solvent and an additive, wherein the weight ratio of the solute is 15-25%, the weight ratio of the solvent is 60-70%, and the weight ratio of the additive is 5-15%.
Further, the air conditioner is provided with a fan,
the solute is selected from one or a mixture of two of boric acid, ammonium borate, ammonium pentaborate, 1, 6-dodecadioic acid ammonium, single-end side branch chain fatty acid, fatty acid with two end side branches, single-end side branch chain fatty acid ammonium and two end side branch chain fatty acid ammonium;
the solvent comprises ethylene glycol, diethylene glycol, glycerol, diethylene glycol monobutyl ether and triethylene glycol dimethyl ether;
the additive comprises: a sparking voltage booster, a stabilizer and a hydrogen absorbent;
the sparking voltage improver comprises polyvinyl alcohol with the polymerization degree of 300-2400, ammonium polyacrylate, polyethylene glycol with the polymerization degree of 400-30000, polyglycerol, water-soluble polyalkylene glycol derivatives, polyethylene oxide propylene oxide ether and SiO2One or more of nm-level dispersing agent, polymerized fatty acid and polymerized fatty acid ammonium;
the stabilizer comprises one or more of boric acid esterified ester, phosphoric acid esterified ester, mannitol, sorbitol, xylitol, phosphoric acid, ammonium phosphate, phosphorous acid, ammonium phosphite, hypophosphorous acid, ammonium hypophosphite, diammonium hydrogen phosphate, polyphosphoric acid, ammonium polyphosphate and alkyl phosphate;
the hydrogen absorbent is one or more of p-nitrophenol, m-nitrophenol, p-nitrobenzoic acid, metanitroacetophenone, resorcinol, hydroquinone, o-nitroanisole and p-nitrobenzyl alcohol; .
Further, the thickness of the aluminum foil is 120 μm, and the formation voltage of the aluminum foil is 850V.
Further, the total thickness of the electrolytic paper is 60-70 μm, and the total breakdown voltage of the electrolytic paper is 1200V.
Further, still include explosion-proof valve, explosion-proof valve sets up between core package bottom and the aluminium shell.
Further, the aluminum shell comprises an insulating sleeve which completely covers the side wall of the aluminum shell.
A method of making a high voltage capacitor, the method comprising:
s01 cutting the aluminum foil into a predetermined size,
s02 winding the aluminum foil and the electrolyte into a core package,
s03, assembling the core bag, the outgoing line, the rubber plug, the aluminum shell, the explosion-proof valve and the insulating sleeve according to the preset design,
s04 ages the assembled high voltage capacitor.
Further, the aging method is segmented aging and comprises the following steps:
an aging voltage of 300V is firstly applied to the ultrahigh voltage 600V capacitor,
after the product is stabilized, the aging voltage is increased from 300V to 500V,
after the product stabilized, the aging voltage was raised to 620V and maintained for a period of time until the aging was complete.
Further, the step S03 includes adding a beam waist, which is disposed at the middle position of the rubber plug of the whole high-voltage capacitor.
Description of the Performance and principles: the 105 ℃ lead type product in the existing aluminum electrolytic capacitor does not have a product with the rated voltage of 600V, so the aluminum foil, the electrolytic paper, the rubber plug, the electrolyte and the aging process used by the type of capacitor are improved, the 105 ℃ lead type aluminum electrolytic capacitor can be used under the rated voltage of 600V, and the rated working voltage can be changed by improving the withstand voltage of the anode foil and adjusting the formula proportion of the electrolyte, so that the rated voltage is increased to 630-650V.
The implementation of the invention has the following beneficial effects:
1. the invention adopts single-layer electrolytic paper or composite electrolytic paper with the breakdown voltage of 1200V or more, thereby improving the voltage which can be born by the capacitor and leading the rated voltage of the capacitor to reach 600V or more.
2. The electrolyte adopted by the invention belongs to a non-aqueous electrolyte, contains lower moisture content, and the sparking voltage of the electrolyte is 600V or above, so that the rated voltage of the capacitor can reach 600V or above.
3. The capacitor aluminum shell adopts the explosion-proof valve, and the explosion-proof valve enables the capacitor to release the pressure in the capacitor under the condition that the capacitor works over rated voltage, so that the condition that personnel are injured due to explosion caused by overhigh pressure in the capacitor is prevented.
4. The rubber plug with the butterfly-shaped surface is adopted, and the shape enables the capacitor to increase the electric creepage distance between the positive electrode and the negative electrode under the ultrahigh voltage of 600V, so that the high-voltage stability is improved.
5. The invention adopts the insulating sleeve which wraps the aluminum shell of the whole capacitor, so that the capacitor is safer and more reliable in the using process.
6. The invention adopts the aging method of sectional aging, so that the capacitor is safer in the aging process, the condition that the capacitor is damaged due to overlarge transient voltage is not easy to occur, and the whole production process is safer and more reliable.
Drawings
FIG. 1 is a block diagram of a leaded ultra high voltage capacitor;
FIG. 2(A) is a graph of capacity variation;
FIG. 2(B) is a graph of loss variation;
fig. 2(C) is a graph showing a change in leakage current.
Wherein reference numerals in the figures correspond to: 1-aluminum shell, 2-core package, 3-rubber plug, 4-outgoing line, 5-insulating sleeve and 6-explosion-proof valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Examples
In the embodiment, referring to fig. 1, in order to overcome the defect that the conventional lead-type ultra-high voltage capacitor does not have a high-voltage capacitor with a rated voltage of 600V, the invention provides a lead-type ultra-high voltage capacitor and a preparation method thereof, wherein the lead-type ultra-high voltage capacitor comprises an aluminum shell 1, a core package 2, a rubber plug 3 and a lead wire 4, the lead wire 4 is fixedly connected with the core package 2, the rubber plug 3 is arranged at the end part of the lead wire 4 close to the core 2, the lead wire 4, the rubber plug 3 and the core package 2 are sequentially arranged in the aluminum shell 1 from top to bottom,
the core package 2 comprises aluminum foil and electrolytic paper, the core package (formed by laminating the aluminum foil and the electrolytic paper together and winding, the core package 2 is also impregnated by electrolyte,
the electrolyte comprises a solute, a solvent and an additive, wherein the weight ratio of the solute is 15-25%, the weight ratio of the solvent is 60-70%, and the weight ratio of the additive is 5-15%.
In a particular embodiment of the method according to the invention,
the solute is selected from one or two mixtures of boric acid, ammonium borate, ammonium pentaborate, 1, 6-ammonium dodecadicarboxylate, fatty acid with single-end side branch or double-end side branch such as C14, C16, C22, C24 and C30, and fatty acid ammonium with single-end side branch or double-end side branch such as C14, C16, C22, C24 and C30,
the solvent comprises glycol, diethylene glycol, glycerol, diethylene glycol monobutyl ether and triethylene glycol dimethyl ether,
the additives include three types: a flash voltage booster, a stabilizer and a hydrogen absorbent.
The sparking voltage improver is selected from polyvinyl alcohol with the polymerization degree of 300-2400, ammonium polyacrylate, polyethylene glycol with the polymerization degree of 400-30000, polyglycerol, water-soluble polyalkylene glycol derivative, polyethylene oxide propylene oxide ether and SiO2One or more of nm-level dispersant, polymerized fatty acid and polymerized fatty acid ammonium;
the stabilizer is selected from one or a mixture of more of boric acid esterified substance, phosphoric acid esterified substance, mannitol, sorbitol, xylitol, phosphoric acid, ammonium phosphate, phosphorous acid, ammonium phosphite, hypophosphorous acid, ammonium hypophosphite, diammonium hydrogen phosphate, polyphosphoric acid, ammonium polyphosphate and alkyl phosphate;
the hydrogen absorbent is one or a mixture of more of p-nitrophenol, m-nitrophenol, p-nitrobenzoic acid, metanitroacetophenone, resorcinol, hydroquinone, o-nitroanisole or p-nitrobenzol;
in a specific embodiment, the thickness of the aluminum foil is 120 μm ± 3 μm, and the formation voltage of the aluminum foil is 850V or more.
The total thickness of the electrolytic paper is 60-70 μm, and the total breakdown voltage of the electrolytic paper is 1200V or more.
In a specific embodiment, the aluminum shell further comprises an insulating sleeve 5, and the insulating sleeve 5 completely covers the side wall of the aluminum shell 1.
On the other hand, the invention also provides a preparation method of the high-voltage capacitor, which comprises the following steps:
s01 cutting the aluminum foil into a predetermined size,
s02 winding the aluminum foil and the electrolyte into a core package,
s03, assembling the core bag, the outgoing line, the rubber plug, the aluminum shell and the insulating sleeve according to the preset design,
s04 ages the assembled high voltage capacitor.
In a specific embodiment, the aging method is a segmented aging, and includes:
an aging voltage of 300V is firstly applied to the ultrahigh voltage 600V capacitor,
after the product is stabilized, the aging voltage is increased from 300V to 500V,
after the product stabilized, the aging voltage was raised to 620V and maintained for a period of time until the aging was complete.
Further, the step S03 includes adding a beam waist, which is disposed at the middle position of the rubber plug of the whole high-voltage capacitor.
Description of the Performance and principles: the 105 ℃ lead type product in the existing aluminum electrolytic capacitor does not have a product with the rated voltage of 600V, so the aluminum foil, the electrolytic paper, the rubber plug, the electrolyte and the aging process used by the type of capacitor are improved, the 105 ℃ lead type aluminum electrolytic capacitor can be used under the rated voltage of 600V, and the rated working voltage can be changed by improving the withstand voltage of the anode foil and adjusting the formula proportion of the electrolyte, so that the rated voltage is increased to 630-650V.
The implementation of the invention has the following beneficial effects:
1. the invention adopts single-layer electrolytic paper or composite electrolytic paper with the breakdown voltage of 1200V or more, thereby improving the voltage which can be born by the capacitor and leading the rated voltage of the capacitor to reach 600V or more.
2. The electrolyte adopted by the invention belongs to a non-aqueous electrolyte, contains lower moisture content, and the sparking voltage of the electrolyte is 600V or above, so that the rated voltage of the capacitor can reach 600V or above.
3. The capacitor aluminum shell adopts the explosion-proof valve, and the explosion-proof valve enables the capacitor to release the pressure in the capacitor under the condition that the capacitor works over rated voltage, so that the condition that personnel are injured due to explosion caused by overhigh pressure in the capacitor is prevented.
4. The rubber plug with the butterfly-shaped surface is adopted, and the shape enables the capacitor to increase the electric creepage distance between the positive electrode and the negative electrode under the ultrahigh voltage of 600V, so that the high-voltage stability is improved.
5. The invention adopts the insulating sleeve which wraps the aluminum shell of the whole capacitor, so that the capacitor is safer and more reliable in the using process.
6. The invention adopts the aging method of sectional aging, so that the capacitor is safer in the aging process, the condition that the capacitor is damaged due to overlarge transient voltage is not easy to occur, and the whole production process is safer and more reliable.
Examples
In the embodiment, referring to fig. 1 and fig. 2, in order to overcome the defect that the conventional lead-type ultra-high voltage aluminum electrolytic capacitor does not have a high-voltage capacitor with a rated voltage of 600V, the invention provides a lead-type ultra-high voltage capacitor and a preparation method thereof, wherein the lead-type ultra-high voltage capacitor comprises an aluminum shell 1, a core package 2, a rubber plug 3 and a lead wire 4, the lead wire 4 is fixedly connected with the core package 2, the rubber plug 3 is arranged at the end part of the lead wire 4 close to the core 2, the lead wire 4, the rubber plug 3 and the core package 2 are sequentially arranged in the aluminum shell 1 from top to bottom,
the core package 2 comprises aluminum foil and electrolytic paper, the core package (formed by laminating the aluminum foil and the electrolytic paper together and winding, the core package 2 is also impregnated by electrolyte,
the electrolyte comprises a solute, a solvent and an additive, wherein the weight ratio of the solute is 15-25%, the weight ratio of the solvent is 60-70%, and the weight ratio of the additive is 5-15%.
In a particular embodiment of the method according to the invention,
the solute is selected from one or two mixtures of boric acid, ammonium borate, ammonium pentaborate, 1, 6-ammonium dodecadicarboxylate, fatty acid with single-end side branch or double-end side branch such as C14, C16, C22, C24 and C30, and fatty acid ammonium with single-end side branch or double-end side branch such as C14, C16, C22, C24 and C30,
the solvent comprises glycol, diethylene glycol, glycerol, diethylene glycol monobutyl ether and triethylene glycol dimethyl ether,
the additives include three types: a flash voltage booster, a stabilizer and a hydrogen absorbent.
The sparking voltage improver is selected from polyvinyl alcohol with the polymerization degree of 300-2400, ammonium polyacrylate, polyethylene glycol with the polymerization degree of 400-30000, polyglycerol, water-soluble polyalkylene glycol derivative, polyethylene oxide propylene oxide ether and SiO2One or more of nm-level dispersant, polymerized fatty acid and polymerized fatty acid ammonium;
the stabilizer is selected from one or a mixture of more of boric acid esterified substance, phosphoric acid esterified substance, mannitol, sorbitol, xylitol, phosphoric acid, ammonium phosphate, phosphorous acid, ammonium phosphite, hypophosphorous acid, ammonium hypophosphite, diammonium hydrogen phosphate, polyphosphoric acid, ammonium polyphosphate and alkyl phosphate;
the hydrogen absorbent is one or a mixture of more of p-nitrophenol, m-nitrophenol, p-nitrobenzoic acid, metanitroacetophenone, resorcinol, hydroquinone, o-nitroanisole or p-nitrobenzol;
in a specific embodiment, the thickness of the aluminum foil is 120 μm ± 3 μm, and the formation voltage of the aluminum foil is 850V or more.
In a specific embodiment, the total thickness of the electrolytic paper is 60 to 70 μm, and the total breakdown voltage of the electrolytic paper is 1200V or more.
In a specific embodiment, the anti-explosion valve 6 is further included, and the anti-explosion valve 6 is arranged between the bottom of the core bag 2 and the aluminum shell 1.
In a specific embodiment, the aluminum shell further comprises an insulating sleeve 5, and the insulating sleeve 5 completely covers the side wall of the aluminum shell 1.
On the other hand, the invention also provides a preparation method of the high-voltage capacitor, which comprises the following steps:
s01 cutting the aluminum foil into a predetermined size,
s02 winding the aluminum foil and the electrolyte into a core package,
s03, assembling the core bag, the outgoing line, the rubber plug, the aluminum shell, the explosion-proof valve and the insulating sleeve according to the preset design,
s04 ages the assembled high voltage capacitor.
In a specific embodiment, the aging method is a segmented aging, and includes:
an aging voltage of 300V is firstly applied to the ultrahigh voltage 600V capacitor,
after the product is stabilized, the aging voltage is increased from 300V to 500V,
after the product stabilized, the aging voltage was raised to 620V and maintained for a period of time until the aging was complete.
Further, the step S03 includes adding a beam waist, which is disposed at the middle position of the rubber plug of the whole high-voltage capacitor. .
Description of the Performance and principles: the 105 ℃ lead type product in the existing aluminum electrolytic capacitor does not have a product with the rated voltage of 600V, so the aluminum foil, the electrolytic paper, the rubber plug, the electrolyte and the aging process used by the type of capacitor are improved, the 105 ℃ lead type aluminum electrolytic capacitor can be used under the rated voltage of 600V, and the rated working voltage can be changed by improving the withstand voltage of the anode foil and adjusting the formula proportion of the electrolyte, so that the rated voltage is increased to 630-650V. .
On this basis has add explosion-proof valve simultaneously, and explosion-proof valve makes the condenser release the inside pressure of condenser under the circumstances that surpasss rated voltage work, prevents that the inside pressure of condenser is too high and explodes and split and lead to personnel's injured situation.
The invention also provides experimental data of the pressure release test, and the pressure release test method comprises the following steps:
1, experimental specification/size: 600V22uF, 13 × 25.
2, experimental conditions: 1.5 times of working voltage and 1A of current.
3, experimental requirements: after the product is normally released, the current value is reduced to 0.03A until the experimental power supply displays that the current value is reduced.
The qualified standard of the test is that the product is normally released within one minute, no harsh noise, no explosion of the electrolytic paper, no combustion and no short circuit breakdown are required, the test voltage of the product is increased by 10V when the product is not released within 1 minute until the product is released, and finally no harsh noise, no explosion of the electrolytic paper, no combustion and no short circuit breakdown are required.
Meanwhile, a load test was performed by applying ripple current to the pigtailed ultra high voltage 600V22uF, 13 × 25 at an ambient temperature of 105 ℃:
FIG. 2(A) is a graph showing the change in capacity at 105 ℃ for 2000h of test time.
FIG. 2(B) is a graph showing the change in loss at 105 ℃ for 2000h of test time.
FIG. 2(C) is a graph showing the leakage change at 105 ℃ for 2000h of test time.
The implementation of the invention has the following beneficial effects:
1. the invention adopts single-layer electrolytic paper or composite electrolytic paper with the breakdown voltage of 1200V or more, thereby improving the voltage which can be born by the capacitor and leading the rated voltage of the capacitor to reach 600V or more.
2. The electrolyte adopted by the invention belongs to a non-aqueous electrolyte, contains lower moisture content, and the sparking voltage of the electrolyte is 600V or above, so that the rated voltage of the capacitor can reach 600V or above.
3. The capacitor aluminum shell adopts the explosion-proof valve, and the explosion-proof valve enables the capacitor to release the pressure in the capacitor under the condition that the capacitor works over rated voltage, so that the condition that personnel are injured due to explosion caused by overhigh pressure in the capacitor is prevented.
4. The rubber plug with the butterfly-shaped surface is adopted, and the shape enables the capacitor to increase the electric creepage distance between the positive electrode and the negative electrode under the ultrahigh voltage of 600V, so that the high-voltage stability is improved.
5. The invention adopts the insulating sleeve which wraps the aluminum shell of the whole capacitor, so that the capacitor is safer and more reliable in the using process.
6. The invention adopts the aging method of sectional aging, so that the capacitor is safer in the aging process, the condition that the capacitor is damaged due to overlarge transient voltage is not easy to occur, and the whole production process is safer and more reliable.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (7)

1. The ultrahigh-voltage lead-type capacitor is characterized by comprising an aluminum shell (1), a core package (2), a rubber plug (3) and an outgoing line (4), wherein the outgoing line (4) is fixedly connected with the core package (2), the rubber plug (3) is arranged at the end part of the outgoing line (4) close to the core package (2), the outgoing line (4), the rubber plug (3) and the core package (2) are sequentially arranged in the aluminum shell (1) from top to bottom,
the core package (2) comprises aluminum foil and electrolytic paper, the core package (2) is formed by laminating the aluminum foil and the electrolytic paper together and winding, the core package (2) is also impregnated by electrolyte,
the electrolyte comprises a solute, a solvent and an additive, wherein the weight ratio of the solute to the solvent is 15-25%, the weight ratio of the solvent to the additive is 60-70%, the weight ratio of the additive to the additive is 5-15%, and the solute comprises one or two of boric acid, ammonium borate, ammonium pentaborate, 1, 6-dodecadiammonium, single-end side chain fatty acids, two-end side chain fatty acids, single-end side chain fatty acid ammonium and two-end side chain fatty acid ammonium; the solvent comprises ethylene glycol, diethylene glycol, glycerol, diethylene glycol monobutyl ether and triethylene glycol dimethyl ether; the additive comprises: a sparking voltage booster, a stabilizer and a hydrogen absorbent; the flash voltage improver comprises one or more of polyvinyl alcohol with the polymerization degree of 300-2400, ammonium polyacrylate, polyethylene glycol with the polymerization degree of 400-30000, polyglycerol, a water-soluble polyalkylene glycol derivative, polyethylene oxide propylene oxide ether, SiO2 nm-grade dispersing agent, polymerized fatty acid and ammonium polymerized fatty acid; the stabilizer comprises one or more of boric acid esterified ester, phosphoric acid esterified ester, mannitol, sorbitol, xylitol, phosphoric acid, ammonium phosphate, phosphorous acid, ammonium phosphite, hypophosphorous acid, ammonium hypophosphite, diammonium hydrogen phosphate, polyphosphoric acid, ammonium polyphosphate and alkyl phosphate; the hydrogen absorbent comprises one or more of p-nitrophenol, m-nitrophenol, p-nitrobenzoic acid, metanitroacetophenone, resorcinol, hydroquinone, o-nitroanisole and p-nitrobenzol;
the capacitor can be used at a rated voltage of 600V at an operating temperature of 105 ℃.
2. The ultra-high voltage lead-type capacitor according to claim 1, wherein the ratio of the mixture of one or two of boric acid, ammonium borate, ammonium pentaborate, ammonium 1, 6-dodecadioate, one or two of a single-end side chain fatty acid, a double-end side chain fatty acid, ammonium single-end side chain fatty acid, and ammonium double-end side chain fatty acid is 15 to 25% by weight, the ratio of the mixture of ethylene glycol, diethylene glycol, glycerol, diethylene glycol monobutyl ether, and triethylene glycol dimethyl ether is 60 to 70% by weight, and the total ratio of the additives is 5 to 15%.
3. The ultra-high voltage leaded capacitor of claim 1 wherein the aluminum foil has a thickness of 120 μm and a formation voltage of 850V.
4. The ultra-high voltage leaded capacitor as recited in claim 3, wherein said electrolytic paper has a total thickness of 60 μm to 70 μm, and a total breakdown voltage of 1200V.
5. The ultra high voltage lead type capacitor of claim 1, further comprising an explosion-proof valve (6), the explosion-proof valve (6) being disposed between the bottom of the core package (2) and the aluminum case (1).
6. The ultra-high voltage leaded capacitor according to claim 5, further comprising an insulating sleeve (5), wherein the insulating sleeve (5) completely covers the side wall of the aluminum case (1).
7. A method of manufacturing an extra-high voltage leaded capacitor as defined in any one of claims 1 to 6, comprising:
s01, cutting the aluminum foil into preset size;
s02, winding the aluminum foil and the electrolytic paper into a core package;
s03, assembling the core bag, the outgoing line, the beam waist, the rubber plug, the aluminum shell, the explosion-proof valve and the insulating sleeve according to a preset design, wherein the beam waist is arranged in the middle of the rubber plug of the whole ultrahigh-voltage capacitor;
s04, aging the assembled extra-high voltage lead type capacitor, wherein the aging method is segmented aging and comprises the following steps:
an aging voltage of 300V is firstly applied to the ultrahigh voltage 600V capacitor,
after the product is stabilized, the aging voltage is increased from 300V to 500V,
after the product stabilized, the aging voltage was raised to 620V and maintained for a period of time until the aging was complete.
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CN112366088A (en) * 2020-11-05 2021-02-12 南通新三能电子有限公司 Manufacturing method of ultrahigh-voltage 850V bolt type aluminum electrolytic capacitor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1862728A (en) * 2005-12-28 2006-11-15 横店集团东磁有限公司 Flash lamp aluminum electrolytic capacitor and preparation method thereof
CN101483101A (en) * 2008-12-25 2009-07-15 佛山市三水日明电子有限公司 125 DEG C high temperature long life aluminum electrolysis capacitor, production method thereof and special electrolysis liquid
CN101504887A (en) * 2009-01-13 2009-08-12 珠海华冠电容器有限公司 Manufacturing method for solid aluminum electrolytic capacitor
CN101599367A (en) * 2009-07-10 2009-12-09 南通江海电容器股份有限公司 600V ultrahigh voltage aluminum electrolytic capacitor working electrolyte and preparation and application thereof
CN102324327A (en) * 2011-05-31 2012-01-18 肇庆绿宝石电子有限公司 Method for preventing short-circuit failure of high-voltage aluminum-electrolyzing capacitor for switching power supply
CN109192509A (en) * 2018-07-10 2019-01-11 肇庆绿宝石电子科技股份有限公司 A kind of aluminium electrolutic capacitor and its manufacturing method in 600V high pressure high temperature resistance and long service life

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6845551B2 (en) * 2003-06-12 2005-01-25 The United States Of America As Represented By The Secretary Of The Army Method of making a power electronics capacitor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1862728A (en) * 2005-12-28 2006-11-15 横店集团东磁有限公司 Flash lamp aluminum electrolytic capacitor and preparation method thereof
CN101483101A (en) * 2008-12-25 2009-07-15 佛山市三水日明电子有限公司 125 DEG C high temperature long life aluminum electrolysis capacitor, production method thereof and special electrolysis liquid
CN101504887A (en) * 2009-01-13 2009-08-12 珠海华冠电容器有限公司 Manufacturing method for solid aluminum electrolytic capacitor
CN101599367A (en) * 2009-07-10 2009-12-09 南通江海电容器股份有限公司 600V ultrahigh voltage aluminum electrolytic capacitor working electrolyte and preparation and application thereof
CN102324327A (en) * 2011-05-31 2012-01-18 肇庆绿宝石电子有限公司 Method for preventing short-circuit failure of high-voltage aluminum-electrolyzing capacitor for switching power supply
CN109192509A (en) * 2018-07-10 2019-01-11 肇庆绿宝石电子科技股份有限公司 A kind of aluminium electrolutic capacitor and its manufacturing method in 600V high pressure high temperature resistance and long service life

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