CN104900409A - Aluminium electrolytic capacitor - Google Patents
Aluminium electrolytic capacitor Download PDFInfo
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- CN104900409A CN104900409A CN201510292580.0A CN201510292580A CN104900409A CN 104900409 A CN104900409 A CN 104900409A CN 201510292580 A CN201510292580 A CN 201510292580A CN 104900409 A CN104900409 A CN 104900409A
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- guide pin
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Abstract
The invention relates to an aluminium electrolytic capacitor, which includes an aluminium housing and a capacitor core. The capacitor core includes an anode foil, a cathode foil, electrolytic paper wrapping the anode and cathode foils, and a positive guide pin and a negative guide pin that are arranged on the anode foil and the cathode foil respectively. The inner wall of the aluminium housing is coated with an insulation film. The distance between the capacitor core and the inner wall of the aluminium housing is 0.5 millimeters. The cathode foil is a pressurized cathode foil. The main body of each of the positive guide pin and the negative guide pin is a cylindrical conductor. One end of each conductor is a flat guide sheet, and the other end of each conductor is a wire pin. A transition layer is arranged between each conductor and one corresponding flat guide sheet, the transition layer has two triangular surfaces, the width of the transition layer is equal to that of the guide sheets, and the length of the transition layer is one third of that of the guide sheets. The capacitor has a higher capacitance volume ratio, and is resistant to reverse direction and over-voltage. Each guide pin of the capacitor is equipped with a protective cover which prevents the corresponding guide pin from being damaged at ordinary times. Moreover, connections between the electrodes will not be affected.
Description
Technical field
The present invention relates to a kind of aluminium electrolytic capacitor.
Background technology
Along with people are to the enhancing of the consciousness of environmental protection, low-carbon (LC), the environment-friendly products such as LED lamp, automotive electronics will replace incandescent lamp, how to meet LED, automotive electronics drive circuit hot environment, and electronic devices and components high temperature resistantization will be an indispensable measure.LED, automotive electronics drive circuit, particularly at automobile engine position, during work, environment temperature even reaches 140 DEG C, the usual serviceability temperature of aluminium electrolytic capacitor uses within the scope of-25 DEG C ~+70 DEG C, and when temperature is more than 140 DEG C, the leakage current of capacitor can increase severely, resistance to ripple ability declines rapidly, during work, capacitor caloric value also will increase severely thereupon, and heat directly can make capacitor expansion bulge, affects operating characteristic and the useful life of capacitor.
In addition, owing to carrying out the capacitor core of impregnation electrolyte process likely because installation accuracy is not high, produced and crookedly encountered aluminum hull inwall, and made aluminum hull cause capacitor core to be short-circuited phenomenon.Along with the size of various electronic system, comprise day by day reducing of thickness, other electronic components meet the requirement of this trend substantially, and this also requires that electrolytic capacitor does not lose on the basis of previous level in its performance, and overall dimension is miniaturized further; And due to anode foil voltage be zero, the resistance to reverse withstand voltage deficiency of this kind of capacitor, thus cause resistance to ripple indifferent, in use, easily breaks down and even damages.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the object of this invention is to provide a kind of aluminium electrolytic capacitor, structure is simple, capacitance volume ratio is larger, and resistance to reverse withstand voltage foot.
To achieve these goals, the technical solution used in the present invention is:
Aluminium electrolytic capacitor, comprise aluminum hull and capacitor core, described capacitor core comprises cathode foil, anode foil, holds the electrolytic paper of cathode foil and anode foil, and the positive guide pin be separately positioned in cathode foil and anode foil and negative guide pin, described aluminum hull inwall is covered with a dielectric film, be spaced apart 0.5 millimeter between capacitor core and aluminum hull inwall, described anode foil adopts pressurization anode foil; Described positive and negative guide pin main body is a columniform conductor, described conductor one end is a flat guide card, the other end of guide pin is stitch, transition zone is provided with between described conductor and flat guide card, described transition zone has two sides and is triangle, the width of transition zone is the same with the width of guide card, and length is 1/3rd of guide card.
Further, described capacitor guide pin is provided with protective sleeve, and described protective sleeve is made up of PVC material.
Further, described protective sleeve is provided with connecting hole, and described connecting hole is provided with closed vinyl cover.
Further, the voltage of described pressurization anode foil is more than 3V.
Further, described dielectric film is bonded in aluminum hull inwall.
Compared with prior art, the invention has the beneficial effects as follows:
First, structure of the present invention is simple, reasonable in design, the overall dimension of electrolytic capacitor can be reduced on the basis that maintenance function and performance do not lose previous level, and by using negative paper tinsel pressurization to make the resistance to reverse voltage ability of capacitor improve, final resistance to ripple ability promotes greatly, better meets the instructions for use of welding machine and these equipment of frequency converter.
Second; low-impedance guide needle can contact with electrolyte fully when work; ensure that the high efficiency of energy transforms; being provided with transition zone at guide card and guide pin contact site makes it firmer; ensure that anode and cathode in conjunction with time safety; capacitor guide pin is provided with protective sleeve and guide pin can be avoided to sustain damage at ordinary times, and can not affect the contact between electrode.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is guide pin structural representation of the present invention.
In figure: 1, aluminum hull; 2, capacitor core; 3, positive guide pin; 4, negative guide pin; 5, dielectric film; 20 guide pin main bodys; 30, guide card; 40, stitch; 50, transition zone; 60, protective sleeve; 70, connecting hole; 80, vinyl cover is closed.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Aluminum hull 1 and capacitor core 2 is the present invention includes see Fig. 1, described capacitor core 2 comprises cathode foil, anode foil, holds the electrolytic paper of cathode foil and anode foil, and the positive guide pin 3 be separately positioned in cathode foil and anode foil and negative guide pin 4, described aluminum hull inwall is covered with a dielectric film 5, be spaced apart 0.5 millimeter between capacitor core 2 and aluminum hull 1 inwall, described anode foil adopts pressurization anode foil.
Described aluminum hull 1 inwall is bonded with dielectric film 5, and described anode foil adopts pressurization anode foil; The voltage of described pressurization anode foil is more than 3V.
Guide pin provided by the invention as shown in Figure 2, comprise guide pin main body 20, described guide pin main body 20 is a columniform conductor, described conductor one end is a flat guide card 30, the other end is stitch 40, transition zone 50 is provided with between described guide pin main body 20 and guide card 30, described transition zone 50 has two sides and is triangle, the width of transition zone 50 is the same with the width of guide card, length is 1/3rd of guide card 30, traditional capacitor guide pin and the area of electrolyte contacts little, and guide card with the contact site of guide pin is too soft cause capacitor guide pin anode and cathode to be combined time easily go wrong, in the present embodiment, described conductor one end is a flat guide card 30, described guide card thickness small size is large, and then increase the contact area of guide pin and electrolyte, add the conversion efficiency of energy, it should be noted that, state between guide pin main body 20 and guide card 30 and be provided with transition zone 50, described transition zone 50 has two sides and is triangle, the width of transition zone 50 is the same with the width of guide card, length is 1/3rd of guide card 30, because guide pin main body 20 in the past causes in conjunction with problem the place contacted with guide card 30 is very soft, but guide card 30 and guide pin main body 20 are linked together by triangle by the transition zone in the present embodiment 50, make use of triangle stability, contact site is made to become firmer, avoid the generation of problem.
Described on base; described guide pin main body 20 is provided with protective sleeve 60, and described protective sleeve 60 is made up of PVC material, makes because guide pin is metal; metal long term exposure in atmosphere; easily by the dioxygen oxidation in air, in the present embodiment, guide pin main body 20 is provided with protective sleeve 60; due to the existence of protective sleeve; guide pin and other material have been completely cut off and have come, and protective sleeve 60 to be made up of PVC material be non-conductive property due to PVC material, prevent unnecessary electric discharge.
In addition, described protective sleeve 60 is provided with connecting hole 70, and described connecting hole 70 is provided with closed vinyl cover 80; the contact between guide pin is hampered when protective sleeve 60 works; hamper electric discharge, so described protective sleeve 60 is provided with connecting hole 70, when needs discharge time; unload closed vinyl cover 8; get through the road of the contact between guide pin, in time not needing electric discharge, just closed and close vinyl cover 80; structure is simple, easy to use.
Above are only a kind of embodiment of the present invention; not in order to limit the present invention; those skilled in the art can make various changes said structure and improve; all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. an aluminium electrolytic capacitor, comprise aluminum hull and capacitor core, described capacitor core comprises cathode foil, anode foil, holds the electrolytic paper of cathode foil and anode foil, and the positive guide pin be separately positioned in cathode foil and anode foil and negative guide pin, described aluminum hull inwall is covered with a dielectric film, be spaced apart 0.5 millimeter between capacitor core and aluminum hull inwall, described anode foil adopts pressurization anode foil; It is characterized in that: described positive and negative guide pin main body is a columniform conductor, described conductor one end is a flat guide card, the other end of guide pin is stitch, transition zone is provided with between described conductor and flat guide card, described transition zone has two sides and is triangle, the width of transition zone is the same with the width of guide card, and length is 1/3rd of guide card.
2. aluminium electrolytic capacitor as claimed in claim 1, it is characterized in that: described capacitor guide pin is provided with protective sleeve, described protective sleeve is made up of PVC material.
3. aluminium electrolytic capacitor as claimed in claim 2, it is characterized in that: described protective sleeve is provided with connecting hole, described connecting hole is provided with closed vinyl cover.
4. aluminium electrolytic capacitor as claimed in claim 1, is characterized in that: the voltage of described pressurization anode foil is more than 3V.
5. aluminium electrolytic capacitor as claimed in claim 1, is characterized in that: described dielectric film is bonded in aluminum hull inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292580.0A CN104900409A (en) | 2015-06-02 | 2015-06-02 | Aluminium electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292580.0A CN104900409A (en) | 2015-06-02 | 2015-06-02 | Aluminium electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104900409A true CN104900409A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510292580.0A Pending CN104900409A (en) | 2015-06-02 | 2015-06-02 | Aluminium electrolytic capacitor |
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| CN (1) | CN104900409A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192516A (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 700V ultra-high voltage aluminum electrolytic capacitor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201562594U (en) * | 2009-10-29 | 2010-08-25 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor with lengthening guide needle at stalk part |
| JP2013143556A (en) * | 2012-01-12 | 2013-07-22 | Nippon Chemicon Corp | Lead terminal for capacitor and manufacturing method of the same |
| CN203085371U (en) * | 2012-12-14 | 2013-07-24 | 简兴 | Aluminium electrolytic capacitor |
| CN203536229U (en) * | 2013-07-18 | 2014-04-09 | 成都精容电子有限公司 | Aluminum electrolytic capacitor |
| CN104167291A (en) * | 2014-09-01 | 2014-11-26 | 安徽普和电子有限公司 | Capacitor guide pin |
| CN204792453U (en) * | 2015-06-02 | 2015-11-18 | 苏州携旅网络技术有限公司 | Aluminum electrolytic condenser |
-
2015
- 2015-06-02 CN CN201510292580.0A patent/CN104900409A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201562594U (en) * | 2009-10-29 | 2010-08-25 | 深圳江浩电子有限公司 | Aluminum electrolytic capacitor with lengthening guide needle at stalk part |
| JP2013143556A (en) * | 2012-01-12 | 2013-07-22 | Nippon Chemicon Corp | Lead terminal for capacitor and manufacturing method of the same |
| CN203085371U (en) * | 2012-12-14 | 2013-07-24 | 简兴 | Aluminium electrolytic capacitor |
| CN203536229U (en) * | 2013-07-18 | 2014-04-09 | 成都精容电子有限公司 | Aluminum electrolytic capacitor |
| CN104167291A (en) * | 2014-09-01 | 2014-11-26 | 安徽普和电子有限公司 | Capacitor guide pin |
| CN204792453U (en) * | 2015-06-02 | 2015-11-18 | 苏州携旅网络技术有限公司 | Aluminum electrolytic condenser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192516A (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 700V ultra-high voltage aluminum electrolytic capacitor |
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Application publication date: 20150909 |