CN104900408A - Aluminium electrolytic capacitor resistant to inverse voltage - Google Patents
Aluminium electrolytic capacitor resistant to inverse voltage Download PDFInfo
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- CN104900408A CN104900408A CN201510292601.9A CN201510292601A CN104900408A CN 104900408 A CN104900408 A CN 104900408A CN 201510292601 A CN201510292601 A CN 201510292601A CN 104900408 A CN104900408 A CN 104900408A
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- foil
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Abstract
The invention relates to an aluminium electrolytic capacitor resistant to inverse voltage. The aluminium electrolytic capacitor 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. One end of the positive guide pin and one end of the negative guide pin are in riveted joint to the anode foil and the cathode foil respectively. The other end of the positive guide pin and the other end of the negative guide pin extend out of the top of the aluminium housing and are equipped with bent portions symmetrical to each other. The hook opening of each bent portion faces outwardly. 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 capacitor has a higher capacitance volume ratio, and is highly resistant to inverse voltage.
Description
Technical field
The present invention relates to a kind of aluminium electrolytic capacitor of resistance to reverse voltage.
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 the aluminium electrolytic capacitor of resistance to reverse voltage 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 of resistance to reverse voltage, 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:
The aluminium electrolytic capacitor of resistance to reverse voltage, 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, one end of described positive guide pin and negative guide pin respectively with positive pole aluminium foil, negative pole aluminium foil riveting, the other end stretches out aluminum hull top respectively and has symmetrical bend, and the mouth of hook of bend is outside; Described aluminum hull inwall is covered with a dielectric film, is spaced apart 0.5 millimeter between capacitor core and aluminum hull inwall, described anode foil adopts pressurization anode foil.
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.
The second, positive and negative guide pin arranges bend, when capacitor is installed, can effectively prevent capacitor fixing on circuit before slide, be convenient to install and fix.
Accompanying drawing explanation
Fig. 1 is 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; 6, bend.
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, one end of described positive guide pin 3 and negative guide pin 4 respectively with positive pole aluminium foil, negative pole aluminium foil riveting, the other end stretches out aluminum hull top respectively and has symmetrical bend 6, and the mouth of hook of bend 6 is outside; Described aluminum hull inwall is covered with a dielectric film 5, is 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.
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 (3)
1. the aluminium electrolytic capacitor of resistance to reverse voltage, 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, it is characterized in that: one end of described positive guide pin and negative guide pin respectively with positive pole aluminium foil, negative pole aluminium foil riveting, the other end stretches out aluminum hull top respectively and has symmetrical bend, and the mouth of hook of bend is outside; Described aluminum hull inwall is covered with a dielectric film, is spaced apart 0.5 millimeter between capacitor core and aluminum hull inwall, described anode foil adopts pressurization anode foil.
2. the aluminium electrolytic capacitor of resistance to reverse voltage according to claim 1, is characterized in that: the voltage of described pressurization anode foil is more than 3V.
3. the aluminium electrolytic capacitor of resistance to reverse voltage according to 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 |
|---|---|---|---|
| CN201510292601.9A CN104900408A (en) | 2015-06-02 | 2015-06-02 | Aluminium electrolytic capacitor resistant to inverse voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292601.9A CN104900408A (en) | 2015-06-02 | 2015-06-02 | Aluminium electrolytic capacitor resistant to inverse voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104900408A true CN104900408A (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510292601.9A Pending CN104900408A (en) | 2015-06-02 | 2015-06-02 | Aluminium electrolytic capacitor resistant to inverse voltage |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822392A (en) * | 2020-07-16 | 2020-10-27 | 湖南艾华集团股份有限公司 | Method for screening fracture of negative foil of aluminum electrolytic capacitor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184782A (en) * | 2011-01-29 | 2011-09-14 | 舟山市新龙电子设备有限公司 | Aluminum casing for electrolytic capacitor |
| CN202352526U (en) * | 2012-02-03 | 2012-07-25 | 余秀娜 | Aluminum electrolytic capacitor |
| CN203085371U (en) * | 2012-12-14 | 2013-07-24 | 简兴 | Aluminium electrolytic capacitor |
| CN203260488U (en) * | 2013-05-23 | 2013-10-30 | 浙江五峰电子有限公司 | Capacitor structure |
| CN203466073U (en) * | 2013-07-18 | 2014-03-05 | 成都精容电子有限公司 | Capacitor |
| CN204792440U (en) * | 2015-06-02 | 2015-11-18 | 苏州携旅网络技术有限公司 | Resistant reverse voltage aluminium electrolytic capacitor |
-
2015
- 2015-06-02 CN CN201510292601.9A patent/CN104900408A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184782A (en) * | 2011-01-29 | 2011-09-14 | 舟山市新龙电子设备有限公司 | Aluminum casing for electrolytic capacitor |
| CN202352526U (en) * | 2012-02-03 | 2012-07-25 | 余秀娜 | Aluminum electrolytic capacitor |
| CN203085371U (en) * | 2012-12-14 | 2013-07-24 | 简兴 | Aluminium electrolytic capacitor |
| CN203260488U (en) * | 2013-05-23 | 2013-10-30 | 浙江五峰电子有限公司 | Capacitor structure |
| CN203466073U (en) * | 2013-07-18 | 2014-03-05 | 成都精容电子有限公司 | Capacitor |
| CN204792440U (en) * | 2015-06-02 | 2015-11-18 | 苏州携旅网络技术有限公司 | Resistant reverse voltage aluminium electrolytic capacitor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822392A (en) * | 2020-07-16 | 2020-10-27 | 湖南艾华集团股份有限公司 | Method for screening fracture of negative foil of aluminum electrolytic capacitor |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150909 |