CN105742068A - High-safety tantalum electrolytic capacitor - Google Patents
High-safety tantalum electrolytic capacitor Download PDFInfo
- Publication number
- CN105742068A CN105742068A CN201610195194.4A CN201610195194A CN105742068A CN 105742068 A CN105742068 A CN 105742068A CN 201610195194 A CN201610195194 A CN 201610195194A CN 105742068 A CN105742068 A CN 105742068A
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- China
- Prior art keywords
- capacitor
- wire
- shell
- tantalum
- negative
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- 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.)
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- 239000003990 capacitor Substances 0.000 title claims abstract description 74
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052715 tantalum Inorganic materials 0.000 title claims abstract description 19
- 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
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-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
- 239000003822 epoxy resin Substances 0.000 claims abstract description 5
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 5
- 238000005245 sintering Methods 0.000 claims description 23
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 22
- 239000000758 substrate Substances 0.000 claims description 15
- 239000004411 aluminium Substances 0.000 claims description 7
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims description 4
- 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
- 239000000843 powder Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 206010014357 Electric shock Diseases 0.000 abstract 1
- 229910001128 Sn alloy Inorganic materials 0.000 abstract 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000008187 granular material Substances 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
- H01G9/15—Solid 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
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a high-safety tantalum electrolytic capacitor. The tantalum electrolytic capacitor comprises an aluminum shell and a capacitor element arranged in the shell, wherein the capacitor core of the capacitor element comprises a porous tantalum powder sintered block positive electrode base body; a TaO<5> film is formed on the surface of the tantalum powder sintered block positive electrode base body; a solid electrolyte MnO<2> layer is formed at the negative electrode end of the tantalum powder sintered block positive electrode base body; the solid electrolyte MnO<2> layer is covered with a negative electrode graphite layer; the negative electrode graphite layer is coated with a lead-tin alloy conductive layer; a chip resistor connected with the capacitor core is built in; the chip resistor can discharge the electric energy stored in the capacitor core within a short time to reduce the voltage of the capacitor core to be zero, so that the risk of electric shock caused by the electrified capacitor core when a human body is in contact with the capacitor core is avoided, and high safety is ensured; the space between the cavity of the shell and the capacitor components and parts is filled with epoxy resin, and the shell can be supported, so that the shell is not deformed easily; and in addition, the tantalum electrolytic capacitor is good in insulating effect, capable of protecting the capacitor element, and capable of preventing short circuits or electric leakage.
Description
Technical field
The present invention relates to capacitor technology field, particularly to the tantalum electrolytic capacitor that a kind of safety is high.
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.Capacitor case is generally aluminium shell, but when capacitor case material is aluminium material, clashes into and be easily generated deformation, it is easy to cause capacitor.
Summary of the invention
The main purpose of the present invention is to provide the tantalum electrolytic capacitor that a kind of volume is little, capacity is big, safety is high, on-deformable safety is high.
The present invention proposes the tantalum electrolytic capacitor that a kind of safety is high, including aluminium shell and the capacitor element being placed in described shell, described capacitor element includes capacitor core, negative wire and positive wire, also includes electric discharge Chip-R, and described Chip-R is in parallel with described capacitor core；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；Being provided with positive terminal pad and negative terminal pad on described capacitor core, the positive pole of described Chip-R is welded on described positive terminal pad, and the negative pole of described Chip-R is welded in described negative terminal pad；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, it is filled with epoxy resin between described shell inner cavity and described capacitor element, 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, described negative wire is copper wire, and described positive wire is nickel wire.
Having the beneficial effect that of the tantalum electrolytic capacitor that the safety of the present invention is high
After the high tantalum electrolytic capacitor of the safety 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 the tantalum electrolytic capacitor that safety is high, can be made into miniature component, and stable performance, work long hours the electrical property remaining to keep good.
It is built-in with electric discharge Chip-R, when, after dump, Chip-R can bleed off the electricity being stored in capacitor core in a short period of time, the voltage of capacitor core is reduced to zero, avoiding owing to capacitor core is charged, the danger of the human body that shocks by electricity after human body touch, safety is high.It is filled with epoxy resin in the enclosure between chamber and capacitor element, shell can be propped up so that it is be unlikely to deform, and insulation effect is good, moreover it is possible to protective condenser element, it is prevented that short circuit or electric leakage.
Accompanying drawing explanation
Fig. 1 is the sectional view of the capacitor core of the high tantalum electrolytic capacitor of the safety of the present invention；
Fig. 2 be the high tantalum electrolytic capacitor of the safety 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 tantalum electrolytic capacitor that the safety of the present invention is high:
The tantalum electrolytic capacitor that a kind of safety is high, including aluminium shell 10, the capacitor element being placed in shell 10 and electric discharge Chip-R 30, capacitor element includes capacitor core 20, negative wire 50 and positive wire 40, and Chip-R 30 is in parallel with capacitor core.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.
Being provided with positive terminal pad and negative terminal pad on capacitor core, the positive pole of Chip-R 30 is welded on positive terminal pad, and the negative pole of Chip-R 30 is welded in negative terminal pad.When, after dump, Chip-R 30 can bleed off the electricity being stored in capacitor core in a short period of time, and the voltage of capacitor core is reduced to zero, it is to avoid owing to capacitor core is charged, the danger of the human body that shocks by electricity after human body touch, safety is high.
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.Between shell 10 inner chamber and capacitor element, it is filled with epoxy resin 70, shell can be propped up so that it is be unlikely to deform, and insulation effect is good, moreover it is possible to protective condenser element, it is prevented that short circuit or electric leakage.
Open end cap at shell 10 sets rubber seal plug 60, has positive wire 40 hole on rubber seal plug 60, and positive wire 40 stretches out from positive wire 40 hole.
The high tantalum electrolytic capacitor of safety is when identical pressure and capacitance, the much smaller of the volume ratio aluminium electrolutic capacitor of the tantalum electrolytic capacitor that safety is high, 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. the tantalum electrolytic capacitor that a safety is high, 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 characterised in that, also including electric discharge Chip-R, described Chip-R is in parallel with described capacitor core；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；Being provided with positive terminal pad and negative terminal pad on described capacitor core, the positive pole of described Chip-R is welded on described positive terminal pad, and the negative pole of described Chip-R is welded in described negative terminal pad；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, it is filled with epoxy resin between described shell inner cavity and described capacitor element, 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.
2. the tantalum electrolytic capacitor that safety according to claim 1 is high, 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 |
|---|---|---|---|
| CN201610195194.4A CN105742068A (en) | 2016-03-31 | 2016-03-31 | High-safety tantalum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610195194.4A CN105742068A (en) | 2016-03-31 | 2016-03-31 | High-safety tantalum electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105742068A true CN105742068A (en) | 2016-07-06 |
Family
ID=56252539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610195194.4A Pending CN105742068A (en) | 2016-03-31 | 2016-03-31 | High-safety tantalum electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105742068A (en) |
Citations (4)
| 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 |
| CN101329951A (en) * | 2008-05-23 | 2008-12-24 | 电子科技大学 | High-frequency nonpolarity solid tantalum electrolytic capacitor with lead wire and manufacturing method thereof |
| CN104616891A (en) * | 2015-02-04 | 2015-05-13 | 宁波波英电子有限公司 | Capacitor |
| CN104916435A (en) * | 2015-06-28 | 2015-09-16 | 吕杨 | Capacitor |
-
2016
- 2016-03-31 CN CN201610195194.4A patent/CN105742068A/en active Pending
Patent Citations (4)
| 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 |
| CN101329951A (en) * | 2008-05-23 | 2008-12-24 | 电子科技大学 | High-frequency nonpolarity solid tantalum electrolytic capacitor with lead wire and manufacturing method thereof |
| CN104616891A (en) * | 2015-02-04 | 2015-05-13 | 宁波波英电子有限公司 | 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 | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |
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| WD01 | Invention patent application deemed withdrawn after publication |