CN105679542A - Anti-electric leakage electrolytic capacitor - Google Patents
Anti-electric leakage electrolytic capacitor Download PDFInfo
- Publication number
- CN105679542A CN105679542A CN201610196868.2A CN201610196868A CN105679542A CN 105679542 A CN105679542 A CN 105679542A CN 201610196868 A CN201610196868 A CN 201610196868A CN 105679542 A CN105679542 A CN 105679542A
- Authority
- CN
- China
- Prior art keywords
- wire
- shell
- tantalum powder
- tantalum
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G9/025—Solid electrolytes
- H01G9/032—Inorganic semiconducting electrolytes, e.g. MnO2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
- H01G9/052—Sintered electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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 OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/15—Solid electrolytic capacitors
Abstract
The invention discloses an anti-electric leakage electrolytic capacitor. The anti-electric leakage electrolytic capacitor includes a shell and a capacitor element arranged in the shell; the shell is an epoxy resin shell which is formed by wrapping epoxy resin on the capacitor element, and the shell can prevent electric leakage; the capacitor core of the capacitor element includes a porous tantalum powder agglomerate positive pole base body, the effective area in the porous tantalum powder agglomerate positive pole base body is large, and the use temperature range of the porous tantalum powder agglomerate positive pole base body is wide; a TaO5 film is formed on the surface of the tantalum powder agglomerate positive pole base body through anodizing, and the dielectric constant of the TaO5 film is larger than that of an aluminum oxide film; a solid electrolyte MnO2 layer is formed on the surface of the tantalum powder agglomerate positive pole base body; the solid electrolyte MnO2 layer is covered with a negative pole graphite layer; a tin lead alloy conductive layer is sprayed on the negative pole graphite layer; and therefore, the size of the tantalum electrolytic capacitor is much smaller than that of an aluminum electrolytic capacitor under the same withstanding voltage and capacitance, and the tantalum electrolytic capacitor can be used for making an ultra-small element, and has stable performance.
Description
Technical field
The present invention relates to capacitor technology field, particularly to a kind of anti-creeping electrolysis condenser.
Background technology
Electric capacity is called in capacitor generally letter, is a kind of device holding electric charge. For electrochemical capacitor, referring generally to aluminum electrolytic condenser, it uses thin-oxide film as dielectric substance, with aluminum as electrode material. Owing to very thin dielectric substance can be made, so relatively large electric capacity can be obtained compared to the volume of capacitor. How manufacturing the anti-creeping electrolysis condenser that a kind of volume is little, capacity is big is the technical problem to be solved.
Summary of the invention
The main purpose of the present invention is to provide the anti-creeping electrolysis condenser that a kind of volume is little, capacity big, use temperature range wide.
The present invention proposes a kind of anti-creeping electrolysis condenser, including shell and the capacitor element being placed in described shell, described capacitor element includes capacitor core, negative wire and positive wire, described capacitor core includes by the porous tantalum powder sintering block positive electrode substrate of high temperature sintering after tantalum metal powder briquet, the surface of described tantalum powder sintering block positive electrode substrate is formed with TaO5 dielectric film through anodic oxidation, a tantalum wire is stretched out in described tantalum powder sintering block positive electrode substrate, described positive wire welds with described tantalum wire, described tantalum powder sintering block positive electrode substrate forms solid electrolyte MnO2 layer by impregnating manganese nitrate then through high temperature sintering, described solid electrolyte MnO2 layer is coated with negative pole graphite linings, described negative pole graphite linings is coated with terne metal conductive layer, described negative wire is electrically connected with described solid electrolyte MnO2 layer, described negative wire and described positive wire be arranged in parallel, described shell is that employing is epoxy resin enclosed at the outside epoxy package formed of described capacitor core.
Preferably, described negative wire is copper wire, and described positive wire is nickel wire.
Having the beneficial effect that of the anti-creeping electrolysis condenser of the present invention
After the anti-creeping electrolysis condenser of the present invention adopts the tantalum powder briquet that granule is very thin, high temperature sintering becomes the tantalum powder sintering block positive electrode substrate of porous, and the effective area in monomer whose is long-pending is big, uses temperature range width; The surface of tantalum powder sintering block positive electrode substrate is formed with TaO5 film through anodic oxidation, and the dielectric constant of TaO5 film is bigger than the dielectric constant of alumite;Negative pole end in tantalum powder sintering block positive electrode substrate forms solid electrolyte MnO2 layer by impregnating manganese nitrate then through high temperature sintering, is coated with negative pole graphite linings, is coated with terne metal conductive layer in negative pole graphite linings on solid electrolyte MnO2 layer; Therefore when identical pressure and capacitance, the much smaller of the volume ratio aluminium electrolutic capacitor of tantalum electrolytic capacitor, can be made into miniature component, and stable performance, work long hours the electrical property remaining to keep good.
Shell is that employing is epoxy resin enclosed has anticreep effect at the outside epoxy package formed of capacitor element, safer.
Accompanying drawing explanation
Fig. 1 is the sectional view of the capacitor core of the anti-creeping electrolysis condenser of the present invention;
Fig. 2 be the anti-creeping electrolysis condenser of the present invention sectional view.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
See figures.1.and.2, it is proposed to an embodiment of the anti-creeping electrolysis condenser of the present invention:
A kind of anti-creeping electrolysis condenser, including shell 10 and the capacitor element being placed in shell 10, shell 10 is adopt the epoxy resin enclosed epoxy package formed in capacitor element outside, has anticreep effect, safer. Capacitor element includes capacitor core 20, negative wire 40 and positive wire 30. Capacitor core 20 includes by the porous tantalum powder sintering block positive electrode substrate 21 of high temperature sintering after tantalum metal powder briquet, and the effective area in monomer whose is long-pending is big, uses temperature range width. The dielectric constant that the surface of tantalum powder sintering block positive electrode substrate 21 is formed with TaO5 film 22, TaO5 film 22 through anodic oxidation is bigger than the dielectric constant of alumite. Stretching out a tantalum wire 26 in tantalum powder sintering block positive electrode substrate 21, positive wire 30 welds with tantalum wire 26, and positive wire 30 is nickel wire. Tantalum powder sintering block positive electrode substrate 21 forms solid electrolyte MnO2 layer 23 by impregnating manganese nitrate then through high temperature sintering, solid electrolyte MnO2 layer 23 is coated with negative pole graphite linings 24, negative pole graphite linings 24 is coated with terne metal conductive layer 25, negative wire 40 and solid electrolyte MnO2 layer 23 are electrically connected, and negative wire 40 is copper wire. Negative wire 40 and positive wire 30 be arranged in parallel.
This anti-creeping electrolysis condenser when identical pressure and capacitance, the ratio much smaller of aluminium electrolutic capacitor, can be made into miniature component, and stable performance, work long hours the electrical property remaining to keep good.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure transformation utilizing description of the present invention and accompanying drawing content to make; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.
Claims (2)
1. an anti-creeping electrolysis condenser, including shell and the capacitor element being placed in described shell, described capacitor element includes capacitor core, negative wire and positive wire, it is characterized in that, described capacitor core includes by the porous tantalum powder sintering block positive electrode substrate of high temperature sintering after tantalum metal powder briquet, the surface of described tantalum powder sintering block positive electrode substrate is formed with TaO5 film through anodic oxidation, a tantalum wire is stretched out in described tantalum powder sintering block positive electrode substrate, described positive wire welds with described tantalum wire, described tantalum powder sintering block positive electrode substrate forms solid electrolyte MnO2 layer by impregnating manganese nitrate then through high temperature sintering, described solid electrolyte MnO2 layer is coated with negative pole graphite linings, described negative pole graphite linings is coated with terne metal conductive layer, described negative wire is electrically connected with described solid electrolyte MnO2 layer, described negative wire and described positive wire be arranged in parallel, described shell is that employing is epoxy resin enclosed at the outside epoxy package formed of described capacitor core.
2. anti-creeping electrolysis condenser according to claim 1, it is characterised in that described negative wire is copper wire, described positive wire is nickel wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610196868.2A CN105679542A (en) | 2016-03-31 | 2016-03-31 | Anti-electric leakage electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610196868.2A CN105679542A (en) | 2016-03-31 | 2016-03-31 | Anti-electric leakage electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105679542A true CN105679542A (en) | 2016-06-15 |
Family
ID=56224842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610196868.2A Pending CN105679542A (en) | 2016-03-31 | 2016-03-31 | Anti-electric leakage electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105679542A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4764844A (en) * | 1986-06-13 | 1988-08-16 | Murata Manufacturing Co., Ltd. | Electronic component with terminal caps |
| CN203397914U (en) * | 2013-08-23 | 2014-01-15 | 株洲宏达电子有限公司 | An ultra-low ESR chip macromolecular solid electrolytic capacitor |
| CN104916435A (en) * | 2015-06-28 | 2015-09-16 | 吕杨 | Capacitor |
-
2016
- 2016-03-31 CN CN201610196868.2A patent/CN105679542A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4764844A (en) * | 1986-06-13 | 1988-08-16 | Murata Manufacturing Co., Ltd. | Electronic component with terminal caps |
| CN203397914U (en) * | 2013-08-23 | 2014-01-15 | 株洲宏达电子有限公司 | An ultra-low ESR chip macromolecular solid electrolytic capacitor |
| CN104916435A (en) * | 2015-06-28 | 2015-09-16 | 吕杨 | Capacitor |
Non-Patent Citations (1)
| Title |
|---|
| 肖景和: "《电子元器件识别与检测百问百答》", 31 July 2009, 北京：人民邮电出版社 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |
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| WD01 | Invention patent application deemed withdrawn after publication |