CN105655132A - Electrolytic capacitor - Google Patents
Electrolytic capacitor Download PDFInfo
- Publication number
- CN105655132A CN105655132A CN201610196659.8A CN201610196659A CN105655132A CN 105655132 A CN105655132 A CN 105655132A CN 201610196659 A CN201610196659 A CN 201610196659A CN 105655132 A CN105655132 A CN 105655132A
- Authority
- CN
- China
- Prior art keywords
- wire
- shell
- tantalum
- electrolytic capacitor
- 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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- 239000003990 capacitor Substances 0.000 title claims abstract description 42
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 35
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000005245 sintering Methods 0.000 claims abstract description 26
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000005868 electrolysis reaction Methods 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 15
- 239000004411 aluminium Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 229910000648 terne Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract 3
- 229910001128 Sn alloy Inorganic materials 0.000 abstract 1
- 238000007743 anodising Methods 0.000 abstract 1
- 238000005470 impregnation Methods 0.000 abstract 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 239000000178 monomer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- H01G9/025—Solid electrolytes
- H01G9/032—Inorganic semiconducting electrolytes, e.g. MnO2
-
- 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
- H01G9/008—Terminals
-
- 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
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
-
- 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
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/052—Sintered electrodes
-
- 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
- H01G9/15—Solid electrolytic capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses an electrolytic capacitor. The electrolytic capacitor comprises an aluminum shell and a capacitor component disposed in the shell. The electrolytic capacitor has the advantages that a capacitor packet of the capacitor component comprises a porous tantalum powder agglomerate anode matrix formed by high-temperature sintering after tantalum powder is briquetted, and accordingly the electrolytic capacitor is large in effective area within single volume and wide in using temperature range; a TaO5 film is formed on the surface of the tantalum powder agglomerate anode matrix through anodizing and is larger than an aluminum oxide film in dielectric constant; the cathode end of the tantalum powder agglomerate anode matrix is subjected to manganese nitrate impregnation and then high-temperature sintering to form a solid electrolyte MnO2 layer, the solid electrolyte MnO2 layer is covered with a cathode graphite layer, and the cathode graphite layer is sprayed with a lead-tin alloy conducting layer; under the same voltage-proof and capacitance conditions, the volume of the tantalum electrolytic capacitor is much smaller than that of an aluminum electrolytic capacitor, and the tantalum electrolytic capacitor can be produced into a miniature component and is stable in performance and capable of keeping excellent electrical performance after long-time operation.
Description
Technical field
The present invention relates to capacitor technology field, particularly to a kind of 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 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 electrolysis condenser that a kind of volume is little, capacity big, use temperature range wide.
The present invention proposes a kind of electrolysis condenser, including aluminium 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 film through anodic oxidation, a tantalum wire is stretched out to positive terminal in described tantalum powder sintering block positive electrode substrate, described positive wire welds with described tantalum wire, negative pole end in 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 welded on the negative pole end of described capacitor core, it is electrically connected with described solid electrolyte MnO2 layer.
Preferably, described shell is the shell of one end open, the other end at described shell has negative wire hole, described capacitor core loads in described shell from the opening of described shell, described negative wire stretches out from described negative wire hole, open end cap at described shell sets rubber seal plug, has positive wire hole beyond the Great Wall in described rubber seal, and described positive wire stretches out from described positive wire hole.
Preferably, the negative pole end of described capacitor core is welded in described shell by scolding tin.
Preferably, described negative wire is copper wire, and described positive wire is nickel wire.
Having the beneficial effect that of the electrolysis condenser of the present invention
After the 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.
Owing to tantalum powder sintering block is first to be formed by mold pressing, therefore the profile of tantalum electrolytic capacitor can make various ways.
Accompanying drawing explanation
Fig. 1 is the sectional view of the capacitor core of the electrolysis condenser of the present invention;
Fig. 2 be the 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 electrolysis condenser of the present invention:
A kind of electrolysis condenser, including aluminium shell 10 and the capacitor element being placed in shell 10, capacitor element includes capacitor core 20, negative wire 50 and positive wire 40. 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 to positive terminal in tantalum powder sintering block positive electrode substrate 21, positive wire 40 welds with tantalum wire 26, and positive wire is nickel wire. Negative pole end in 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 50 is welded on the negative pole end of capacitor core 20, is electrically connected with solid electrolyte MnO2 layer 23. Negative wire 50 is copper wire.
Shell 10 is the shell 10 of one end open, and the other end at shell 10 has negative wire 50 hole, and capacitor core 20 loads in shell 10 from the opening of shell 10, and the negative pole end of capacitor core 20 is welded in shell 10 by scolding tin. Negative wire 50 stretches out from negative wire 50 hole, and the open end cap at shell 10 sets rubber seal plug 30, has positive wire 40 hole on rubber seal plug 30, and positive wire 40 stretches out from positive wire 40 hole.
This electrolysis condenser 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.
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 (4)
1. an electrolysis condenser, including aluminium 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 to positive terminal in described tantalum powder sintering block positive electrode substrate, described positive wire welds with described tantalum wire, negative pole end in 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 welded on the negative pole end of described capacitor core, it is electrically connected with described solid electrolyte MnO2 layer.
2. electrolysis condenser according to claim 1, it is characterized in that, described shell is the shell of one end open, the other end at described shell has negative wire hole, described capacitor core loads in described shell from the opening of described shell, and described negative wire stretches out from described negative wire hole, and the open end cap at described shell sets rubber seal plug, having positive wire hole beyond the Great Wall in described rubber seal, described positive wire stretches out from described positive wire hole.
3. electrolysis condenser according to claim 1 and 2, it is characterised in that the negative pole end of described capacitor core is welded in described shell by scolding tin.
4. electrolysis condenser according to claim 3, 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 |
|---|---|---|---|
| CN201610196659.8A CN105655132A (en) | 2016-03-31 | 2016-03-31 | Electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610196659.8A CN105655132A (en) | 2016-03-31 | 2016-03-31 | Electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105655132A true CN105655132A (en) | 2016-06-08 |
Family
ID=56496925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610196659.8A Pending CN105655132A (en) | 2016-03-31 | 2016-03-31 | Electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105655132A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108257784A (en) * | 2017-12-12 | 2018-07-06 | 湖南艾华集团股份有限公司 | Solid-state aluminum electrolytic capacitor and preparation method thereof |
| CN115881440A (en) * | 2023-03-01 | 2023-03-31 | 电子科技大学 | Structure for improving high-frequency characteristic of all-tantalum capacitor and manufacturing method thereof |
Citations (5)
| 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 |
| CN101609749A (en) * | 2008-06-17 | 2009-12-23 | 三星电机株式会社 | Solid electrolytic capacitor And Manufacturing approach |
| CN202695132U (en) * | 2012-08-10 | 2013-01-23 | 慈溪市日益电容器厂 | Capacitor |
| CN203181275U (en) * | 2012-12-31 | 2013-09-04 | 陈榕锦 | LED drive circuit |
| CN104916435A (en) * | 2015-06-28 | 2015-09-16 | 吕杨 | Capacitor |
-
2016
- 2016-03-31 CN CN201610196659.8A patent/CN105655132A/en active Pending
Patent Citations (5)
| 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 |
| CN101609749A (en) * | 2008-06-17 | 2009-12-23 | 三星电机株式会社 | Solid electrolytic capacitor And Manufacturing approach |
| CN202695132U (en) * | 2012-08-10 | 2013-01-23 | 慈溪市日益电容器厂 | Capacitor |
| CN203181275U (en) * | 2012-12-31 | 2013-09-04 | 陈榕锦 | LED drive circuit |
| 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 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108257784A (en) * | 2017-12-12 | 2018-07-06 | 湖南艾华集团股份有限公司 | Solid-state aluminum electrolytic capacitor and preparation method thereof |
| CN115881440A (en) * | 2023-03-01 | 2023-03-31 | 电子科技大学 | Structure for improving high-frequency characteristic of all-tantalum capacitor and manufacturing method thereof |
| CN115881440B (en) * | 2023-03-01 | 2023-05-05 | 电子科技大学 | Structure for improving high-frequency characteristic of all-tantalum capacitor and manufacturing method thereof |
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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: 20160608 |
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| WD01 | Invention patent application deemed withdrawn after publication |