CN204102722U - A kind of noninductive without hindrance tantalum electrolytic capacitor - Google Patents
A kind of noninductive without hindrance tantalum electrolytic capacitor Download PDFInfo
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- CN204102722U CN204102722U CN201420514751.0U CN201420514751U CN204102722U CN 204102722 U CN204102722 U CN 204102722U CN 201420514751 U CN201420514751 U CN 201420514751U CN 204102722 U CN204102722 U CN 204102722U
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- Prior art keywords
- tantalum
- negative electrode
- electrolytic capacitor
- noninductive
- hindrance
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- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 239000003990 capacitor Substances 0.000 title claims abstract description 64
- 229910052715 tantalum Inorganic materials 0.000 title claims abstract description 43
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 claims abstract description 12
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims abstract description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 20
- 229910052709 silver Inorganic materials 0.000 claims description 20
- 239000004332 silver Substances 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 14
- 229910002804 graphite Inorganic materials 0.000 claims description 12
- 239000010439 graphite Substances 0.000 claims description 12
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000002322 conducting polymer Substances 0.000 claims description 5
- 229920001940 conductive polymer Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 239000007784 solid electrolyte Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 102100038595 Estrogen receptor Human genes 0.000 description 17
- 101000882584 Homo sapiens Estrogen receptor Proteins 0.000 description 17
- 238000000034 method Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000024241 parasitism Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000002848 electrochemical method Methods 0.000 description 2
- 108091008577 estrogen receptors gamma Proteins 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 101150057198 ESL1 gene Proteins 0.000 description 1
- 102100029951 Estrogen receptor beta Human genes 0.000 description 1
- 101150022494 GLG1 gene Proteins 0.000 description 1
- 102100034223 Golgi apparatus protein 1 Human genes 0.000 description 1
- 101001010910 Homo sapiens Estrogen receptor beta Proteins 0.000 description 1
- 101100065666 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ESL2 gene Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 150000003481 tantalum Chemical class 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
The utility model provides a kind of noninductive without hindrance tantalum electrolytic capacitor, comprises positive terminal, negative pole end, negative electrode and anode tantalum core; Described anode tantalum core is cuboid, described negative electrode is covered in anode tantalum core outer surface, one or two faces of described anode tantalum core are provided with positive terminal, one end of described positive terminal is embedded in anode tantalum core through negative electrode, the other end is placed in the outside of negative electrode, and the contact site of described positive terminal and negative electrode is insulated by tantalum pentoxide deielectric-coating; The outside in wherein one or two faces of the non-positive pole lead surface of described negative electrode is connected with negative pole end.The utility model is converted in filter circuit useful ESR and ESL that can hinder interference signal by harmful equivalent series resistance ESR and equivalent series inductance ESL that capacitor itself can not be hindered interference signal, the impact of ESR and ESL on filter effect of capacitor itself can be eliminated dramatically, overcome the defect of existing tantalum electrolytic capacitor structure, improve the high frequency performance of capacitor, expand its application, use feature that is simple, successful.
Description
Technical field
The utility model relates to tantalum capacitor, particularly relates to a kind of noninductive without hindrance tantalum electrolytic capacitor.
Background technology
Tantalum electrolytic capacitor because its volume is little, capacity is large, good temp characteristic, stability are widely used in space flight, aviation, electronics, weapons, boats and ships with high reliability, communicate and all kinds of high-end electronic equipment such as medical electronics.Along with electronics are constantly towards miniaturization development, and one of feature of miniaturization is that operating frequency is more and more higher, has higher requirement to the operating frequency of electronic devices and components.For this reason, tantalum capacitor manufacturing is being that ESR and ESL constantly reducing tantalum capacitor makes a sustained effort always, but be limited to existing design, cathode material and manufacturing technology, ESR and ESL of tantalum capacitor parasitism has dropped to the limiting value under current technical conditions.Compare ceramic capacitor, ESR and ESL of tantalum capacitor parasitism is relatively large, thus can not adapt to the growth requirement of high frequency.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of noninductive without hindrance tantalum electrolytic capacitor, this tantalum electrolytic capacitor is by being converted to beneficial effect by the adverse effect of ESR and ESL of its parasitism to circuit, improve its filter effect to greatest extent, solve the problem that tantalum capacitor can not adapt to the growth requirement of high frequency.
The utility model is achieved by the following technical programs.
The one that the utility model provides is noninductive without hindrance tantalum electrolytic capacitor, comprises positive terminal, negative pole end, negative electrode and anode tantalum core; Described anode tantalum core is cuboid, described negative electrode is covered in anode tantalum core outer surface, one or two faces of described anode tantalum core are provided with positive terminal, one end of described positive terminal is embedded in anode tantalum core through negative electrode, the other end is placed in the outside of negative electrode, and the contact site of described positive terminal and negative electrode is insulated by tantalum pentoxide deielectric-coating; The outside in wherein one or two faces of the non-positive pole lead surface of described negative electrode is connected with negative pole end.
Described positive terminal comprises cathode output end and electrode input end, and described cathode output end and electrode input end are each passed through the two sides of negative electrode and are embedded in anode tantalum core.
Described negative pole end comprises negative input and cathode output end, and described negative input and cathode output end are connected with wherein two sides of the non-positive pole lead surface of negative electrode respectively.
Also middle transition material graphite linings, impregnated silver pulp layer and bonding silver slurry layer is provided with respectively successively between described negative electrode and negative input, between negative electrode and cathode output end.
The material of described negative electrode is manganese dioxide, conducting polymer or non-solid electrolyte.
One deck tantalum pentoxide deielectric-coating is also had between described negative electrode and anode tantalum core.
A kind of manufacture method of noninductive without hindrance tantalum electrolytic capacitor; Comprise the following steps:
1. by compressing for tantalum powder; Time compressing, only insert two tantalum wires in one end of tantalum core, or insert two tantalum wires at the two ends of tantalum core as positive pole exit; Or insert tantalum core by after a tantalum wire bending, draw two ends as two positive pole exits;
2. tantalum core is carried out high temperature sintering;
3. tantalum pentoxide deielectric-coating is formed by electrochemical method at the outer surface of the tantalum in-core of porous, outer surface and tantalum wire;
4. manganese dioxide solid state cathode is generated on tantalum pentoxide deielectric-coating surface by high temperature thermal decomposition method;
5. impregnated graphite and silver slurry on one or two non-tantalum wire lead surfaces of tantalum core, then by bonding silver slurry or other adhesives connection metal conductors, as negative pole exit;
6. sheet metal or the wire with solderability is drawn by welding method, as positive pole exit from the outer end of the tantalum wire tantalum core;
7. tantalum core is encapsulated.
4. described step changes into and adopts polymerization to generate conducting polymer generation polymer solid negative electrode, or by dipping conducting solution as liquid cathode.
Described step 6. in welding method be electric resistance welding, Laser Welding.
Described step 7. in packaged type be mold pressing plastic packaging, ceramic packaging, packed by metal casing.
The beneficial effects of the utility model are: by the innovation of tantalum electrolytic capacitor exit method of attachment, harmful equivalent series resistance ESR of interference signal and equivalent series inductance ESL can not be hindered by capacitor itself to be converted in filter circuit useful ESR and ESL that can hinder interference signal, the impact of ESR and ESL on filter effect of capacitor itself can be eliminated dramatically, the impact of ESR and ESL on circuit that capacitor itself is parasitic is reduced to limiting value, overcome the defect of existing tantalum electrolytic capacitor structure, improve the high frequency performance of capacitor, expand its application, there is modern design, use simple, the feature of successful.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the equivalent circuit diagram of the utility model tantalum electrolytic capacitor;
Fig. 3 is the equivalent electric circuit of traditional tantalum electrolytic capacitor;
Fig. 4 is the partial enlarged drawing of the utility model Anodic tantalum core;
In figure: 1-cathode output end, 2-negative electrode, 3-graphite linings, 4-impregnated silver pulp layer, the bonding silver slurry layer of 5-, 6-negative input, 7-electrode input end, 8-cathode output end, 9-anode tantalum core, 10-tantalum pentoxide deielectric-coating.
Embodiment
Further describe the technical solution of the utility model below, but described in claimed scope is not limited to.
One is as depicted in figs. 1 and 2 noninductive without hindrance tantalum electrolytic capacitor, comprises cathode output end 1, negative electrode 2, negative input 6, electrode input end 7, cathode output end 8 and anode tantalum core 9; Described anode tantalum core 9 is cuboid, described negative electrode 2 is covered in anode tantalum core 9 outer surface, two faces of described anode tantalum core 9 are provided with positive terminal, described positive terminal comprises cathode output end 1 and electrode input end 7, one end of described cathode output end 1 and electrode input end 7 is each passed through the two sides of negative electrode 2 and is embedded in anode tantalum core 9, the other end is placed in the outside of negative electrode 2, and the contact site of described positive terminal and negative electrode 2 is insulated by tantalum pentoxide deielectric-coating 10; The outside in wherein two faces of the non-positive pole lead surface of described negative electrode 2 is connected with negative pole end; Described negative pole end comprises negative input 6 and cathode output end 8, and described negative input 6 and cathode output end 8 are connected with wherein two sides of the non-positive pole lead surface of negative electrode 2 respectively.
Also middle transition material graphite linings 3, impregnated silver pulp layer 4 and bonding silver slurry layer 5 is provided with respectively successively between described negative electrode 2 and negative input 6, between negative electrode 2 and cathode output end 8.
The material of described negative electrode 2 is manganese dioxide, conducting polymer or non-solid electrolyte.
As shown in Figure 4, one deck tantalum pentoxide deielectric-coating 10 is also had between described negative electrode 2 and anode tantalum core 9.
A kind of manufacture method of noninductive without hindrance tantalum electrolytic capacitor; Comprise the following steps:
1. by compressing for tantalum powder; Time compressing, only insert two tantalum wires in one end of tantalum core, or insert two tantalum wires at the two ends of tantalum core as positive pole exit; Or insert tantalum core by after a tantalum wire bending, draw two ends as two positive pole exits;
2. tantalum core is carried out high temperature sintering; One is the impurity can removing tantalum in-core, and two is the mechanical strengths improving tantalum core;
3. tantalum pentoxide deielectric-coating is formed by electrochemical method at the outer surface of the tantalum in-core of porous, outer surface and tantalum wire;
4. manganese dioxide solid state cathode is generated on tantalum pentoxide deielectric-coating surface by high temperature thermal decomposition method;
5. impregnated graphite and silver slurry on one or two non-tantalum wire lead surfaces of tantalum core, then by bonding silver slurry or other adhesives connection metal conductors, as negative pole exit;
6. sheet metal or the wire with solderability is drawn by welding method, as positive pole exit from the outer end of the tantalum wire tantalum core;
7. tantalum core is encapsulated.
4. described step changes into and adopts polymerization to generate conducting polymer generation polymer solid negative electrode, or by dipping conducting solution as liquid cathode.
Described step 6. in welding method be electric resistance welding, Laser Welding.
Described step 7. in packaged type be mold pressing plastic packaging, ceramic packaging, packed by metal casing.
The equivalent electric circuit of traditional tantalum electrolytic capacitor as shown in Figure 3, ESR and ESL in figure is connected in capacitor branches, because ESR and ESL has inhibition to high-frequency interferencing signal, thus high-frequency interferencing signal does not flow into load by capacitor branches, is unfavorable for filtering interference signals.
By the innovation of capacitor anode and negative electrode lead-out mode, by parasitic for capacitor itself, be connected in capacitor branches and be difficult to ESR and ESL that eliminate, that be unfavorable for absorbing interference signal, change into series connection in circuit, ESR and ESL that can hinder interference signal, significantly improve the filter effect of capacitor.As can be seen from the equivalent circuit diagram of the utility model capacitor, capacitor in the utility model has 4 exits, be specially 2 positive terminals and 2 negative pole ends, 2 positive terminals are divided into input and output to be connected in series in circuit, thus ESR and the ESL component that positive pole single-ended in traditional tantalum electrolytic capacitor is introduced is converted to ESR1, ESR2, ESL1 and ESL2 of connecting in circuit; Negative pole end is identical with positive terminal principle, ESR and the ESL component that negative pole single-ended in traditional tantalum electrolytic capacitor is introduced is converted to ESR3, ESR3, ESL4 and ESL4 of connecting in circuit.
To generate the anode tantalum core outside deposition last layer graphite linings of manganese dioxide layer, then in graphite linings, flooding last layer silver slurry, finally by bonding silver slurry, the negative electrode of capacitor is drawn negative pole exit as capacitor from metallic conductor.In deposition after graphite linings, traditional capacitor, at whole graphite linings surface impregnation last layer silver slurry, then utilizes bonding silver slurry and metallic conductor to draw negative pole by a face of tantalum core; And way of the present utility model is, in deposition after graphite linings, only at two, impregnated silver pulp layer is distinguished to side, then on impregnated silver pulp layer, draw two negative pole ends respectively, as negative input and the cathode output end of capacitor by bonding silver slurry and metallic conductor.
Tantalum electrolytic capacitor in the utility model is in actual production process, can be the same with traditional tantalum capacitor, only insert a tantalum wire, now capacitor is the three-terminal element having a positive pole exit and two negative pole exits, but ESR and ESL that positive pole is drawn will be connected in series in capacitor branches; Also can on whole non-positive pole lead surface impregnated graphite layers, silver slurry layer, and only draw a negative electrode, now capacitor is a three-terminal element having two positive terminals and a negative pole end, but negative pole draw ESR and ESL will be connected in series in capacitor branches.
Described electrode input end 7 and cathode output end 1 can exchange to use in use.Described negative input 6 and cathode output end 8 can exchange to use in use.
Flip-flop will pass through anode and the negative electrode of capacitor in use, the key loop of the anode of capacitor and negative electrode composition Equivalent DC circuit, by input and the output formation load circuit electric current of capacitor.
Described four ends are drawn noninductive without hindrance tantalum electrolytic capacitor and also electrode input end 7 and cathode output end 1 can be together in parallel in use to be together in parallel as negative pole end as positive terminal, negative input 6 and cathode output end 8 and use; Also can only by electrode input end 7 and cathode output end 1 parallel connection, negative input 6 and cathode output end 8 are then connected in circuit, use as three-terminal capacitor; Or only by negative input 6 and cathode output end 8 parallel connection, electrode input end 7 and cathode output end 1 are then connected in circuit, use as three-terminal capacitor.
Claims (7)
1. a noninductive without hindrance tantalum electrolytic capacitor, comprise positive terminal, negative electrode (2), negative pole end and anode tantalum core (9), it is characterized in that: described anode tantalum core (9) is cuboid, described negative electrode (2) is covered in anode tantalum core (9) outer surface, one or two faces of described anode tantalum core (9) are provided with positive terminal, one end of described positive terminal is embedded in anode tantalum core (9) through negative electrode (2), the other end is placed in the outside of negative electrode (2), the contact site of described positive terminal and negative electrode (2) is insulated by tantalum pentoxide deielectric-coating (10), the outside in wherein one or two faces of the non-positive pole lead surface of described negative electrode (2) is connected with negative pole end.
2. noninductive without hindrance tantalum electrolytic capacitor as claimed in claim 1, it is characterized in that: described positive terminal comprises cathode output end (1) and electrode input end (7), described cathode output end (1) and electrode input end (7) are each passed through the two sides of negative electrode (2) and are embedded in anode tantalum core (9).
3. noninductive without hindrance tantalum electrolytic capacitor as claimed in claim 1 or 2, it is characterized in that: described negative pole end comprises negative input (6) and cathode output end (8), described negative input (6) and cathode output end (8) are connected with wherein two sides of the non-positive pole lead surface of negative electrode (2) respectively.
4. noninductive without hindrance tantalum electrolytic capacitor as claimed in claim 1, is characterized in that: be also provided with middle transition material graphite linings (3), impregnated silver pulp layer (4) and bonding silver slurry layer (5) respectively successively between described negative electrode (2) and negative input (6), between negative electrode (2) and cathode output end (8).
5. noninductive without hindrance tantalum electrolytic capacitor as claimed in claim 1, is characterized in that: the material of described negative electrode (2) is manganese dioxide, conducting polymer or non-solid electrolyte.
6. noninductive without hindrance tantalum electrolytic capacitor as claimed in claim 1, is characterized in that: also have one deck tantalum pentoxide deielectric-coating (10) between described negative electrode (2) and anode tantalum core (9).
7. noninductive without hindrance tantalum electrolytic capacitor as claimed in claim 1, is characterized in that: described tantalum electrolytic capacitor encapsulating material is mold pressing resin, metal or pottery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420514751.0U CN204102722U (en) | 2014-09-09 | 2014-09-09 | A kind of noninductive without hindrance tantalum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420514751.0U CN204102722U (en) | 2014-09-09 | 2014-09-09 | A kind of noninductive without hindrance tantalum electrolytic capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN204102722U true CN204102722U (en) | 2015-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420514751.0U Expired - Lifetime CN204102722U (en) | 2014-09-09 | 2014-09-09 | A kind of noninductive without hindrance tantalum electrolytic capacitor |
Country Status (1)
| Country | Link |
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| CN (1) | CN204102722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240955A (en) * | 2014-09-09 | 2014-12-24 | 中国振华（集团）新云电子元器件有限责任公司 | Tantalum electrolytic capacitor and manufacturing method thereof |
-
2014
- 2014-09-09 CN CN201420514751.0U patent/CN204102722U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104240955A (en) * | 2014-09-09 | 2014-12-24 | 中国振华（集团）新云电子元器件有限责任公司 | Tantalum electrolytic capacitor and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150114 |