CN201319325Y - Non-solid electrolyte full-tantalum capacitor - Google Patents
Non-solid electrolyte full-tantalum capacitor Download PDFInfo
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- CN201319325Y CN201319325Y CNU2008200540141U CN200820054014U CN201319325Y CN 201319325 Y CN201319325 Y CN 201319325Y CN U2008200540141 U CNU2008200540141 U CN U2008200540141U CN 200820054014 U CN200820054014 U CN 200820054014U CN 201319325 Y CN201319325 Y CN 201319325Y
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Abstract
A non-solid electrolyte full-tantalum capacitor comprises a casing, a cathode plate, an anode plates, a cathode lead wire, an anode lead wire and a pressure cover. Both the cathode plate and the anode plate are arranged in the casing; the cathode lead wire passes through the pressure cover and is connected with the cathode plate; the anode lead wire passes through the pressure cover and is connected with the anode plate; tantalum metal powder is compacted and sintered to form a cathode plate with a porous tantalum block; insulated, pressure-resistant and countered TaO5 metal oxide-film mediums are attached to the both sides of the anode plates and/or the cathode plate; the anode plates and the cathode plate adopt an interlayer structure, through which two layers of cathode plates clamp one layer of anode plate; insulated isolating layers are arranged between the anode plates and the cathode plate; the cathode plate consists of the porous tantalum block; the metal oxide-film medium serving as an insulated layer can be also attached to the cathode plate; the structures, such as the casing, the pressure cover and the like are made of tantalum timbers; and non-solid electrolytes are filled at the peripheries of the anode plates and the cathode plate, and the porous tantalum block of the anode plates and the cathode plate, so as to form a non-solid electrolyte full-tantalum capacitor.
Description
Technical field
The utility model patent relates to a kind of electronic devices and components, refers in particular to the full tantalum electrolytic capacitor of the non-solid electrolyte of the big capacity of a kind of anti-back-pressure.
Background technology
At present, along with the develop rapidly of science and technology strength, the activity of human beings scope is increasing, and is more and more to the research and the exploration in cosmic space.The development of space technology is had higher requirement to electronic devices and components.Nowadays, fermenting a worldwide components and parts revolution, and tantalum electrolytic capacitor is as an important branch in the electrolytic capacitor, be widely used in communication, space flight and military project cause, submarine cable and many-sides such as advanced electronics, civil electric appliance, vast capacity, low ESR, high frequency, high temperature, high reliability are one of its main developing direction.
Tantalum electrolytic capacitor is a kind ofly to make as anode material with metal tantalum (Ta), can be divided into two kinds of paper tinsel formula and tantalum powder sintering formulas by the difference of anode construction.In tantalum powder sintering formula tantalum electric capacity,, be divided into solid electrolyte Ta capacitor and non-solid tantalum electrolytic capacitor again because of the difference of working electrolyte.The working electrolyte of non-solid tantalum electrolytic capacitor is one deck tantalum pentoxide film as thin as a wafer of energizing and generating in the tantalum metal surface by unidirectional.This layer oxide film dielectric is combined into an integral body with an end utmost point of forming capacitor fully, can not individualism.This capacitor generally can not bear any reverse voltage, because the tantalum capacitor dielectric oxide film has unilateral conduction and rectification characteristic, when applying reverse voltage, passes through with regard to having very big electric current, even causes because of the short circuit disabler.Therefore, must strict control reverse voltage during conventional tantalum capacitor uses.Apply reverse voltage in case non-solid tantalum electrolytic capacitor occurs, device must be scrapped.To cause great limitation to the application of tantalum capacitor like this.In order to address this problem, generally adopt two conventional tantalum capacitors oppositely to be superimposed together at present, improve the performance of bearing back-pressure, but certainly will strengthen the thickness of product like this, and the effect of practical application is not fine, never effectively promoted.Therefore, the product of Cun Zaiing comprises the existing low capacity tantalum capacitor of anti-the back-pressure in the market, has begun to be not enough to satisfy the high-new cosmic space technical development demand of making rapid progress.
The utility model content
The purpose of this utility model is: in order to overcome existing not enough, the anti-back-pressure ability of non-solid tantalum electrolytic capacitor capacity, deficiency that reliability is not high, the utility model provides a kind of brand-new big capacity non-solid tantalum electrolytic capacitor of anti-back-pressure, this non-solid tantalum electrolytic capacitor has good anti-back-pressure ability, capacity is bigger, and performance is more reliable and more stable.
The technical scheme in the invention for solving the technical problem is: at the unidirectional disadvantage of energizing of tradition, adopted two-way mode of energizing, on the two sides of anode strip and/or cathode sheets all with one deck TaO of anti-the back-pressure
5The burning film medium, and take the sandwich of two-layer cathode sheets one deck anode strip, anode strip and cathode sheets all are made up of the porous tantalum core, around capacitor casing inner anode sheet and cathode sheets, and all be filled with non-solid electrolyte in the hole of anode strip and cathode sheets porous tantalum core, by the TaO of anti-back-pressure the on anode strip and/or the cathode sheets
5Metal oxide film has improved the anti-back-pressure ability and the stability of product greatly.Whole non-solid tantalum electrolytic capacitor structure comprises shell, cathode sheets, anode strip, cathode leg, anode tap and gland, and cathode sheets and anode strip all place in the case body; Cathode leg passes gland and is connected with cathode sheets; Anode tap passes gland and is connected with anode strip; Be characterized in: adopt the cathode sheets of the porous tantalum core that tantalum metal powder compacting sintering makes, and on the two sides of anode strip and/or cathode sheets all with as insulating and the TaO of anti-the back-pressure
5The burning film medium; Described cathode sheets and anode strip are the sandwich of two-layer cathode sheets folder one deck anode strip, are provided with isolated insulation layer between anode strip and cathode sheets; Described cathode sheets is made up of the porous tantalum core, also can be with the burning film medium as insulating barrier on cathode sheets; Structures such as the shell of non solid electrolyte all tantalum capacitor, gland all are to be made of the tantalum material; Around anode strip and cathode sheets, and be filled with non-solid electrolyte in the porous tantalum core hole of anode strip and cathode sheets, form non solid electrolyte all tantalum capacitor.In addition, anode strip and cathode sheets can adopt the mode of multicore cascade, have improved its capacitance greatly.
The beneficial effects of the utility model are because the porous tantalum core that anode strip and cathode sheets all adopt tantalum metal powder compacting sintering to make, and on the two sides of anode strip and/or cathode sheets all with one deck TaO of anti-the back-pressure
5The burning film medium, and take the sandwich of two-layer cathode sheets one deck anode strip, can be so that the back-pressure ability of capacitor be greatly improved; Because overall structure can adopt sandwich structure, therefore can improve capacitor volume greatly simultaneously, compare existing product, existing conventional products, capacity is bigger, and anti-back-pressure ability is strong, and reliability is higher.
Description of drawings
Be in conjunction with the accompanying drawings the utility model to be further specified below.
Fig. 1 is the vertical section structural map of a kind of single cored structure of the present utility model
Fig. 2 is the vertical section structural map of a kind of twin-core structure of the present utility model
Fig. 3 is the vertical section structural map of a kind of multicore structure of the present utility model
" N " 〉=3 among Fig. 3 and be integer
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment one
Accompanying drawing 1 has provided a kind of basic structure schematic diagram of the present utility model, by accompanying drawing as can be seen, the utility model is a kind of non solid electrolyte all tantalum capacitor, structurally take new non solid electrolyte all tantalum capacitor frame mode and manufacture craft thereof, adopted two-way mode of energizing, on the two sides of anode strip 1 and/or cathode sheets 2 all with one deck TaO of anti-the back-pressure
5The burning film medium, and take the sandwich of two-layer cathode sheets one deck anode strip, anode strip 1 and cathode sheets 2 all are made up of the porous tantalum core, around capacitor casing 3 inner anode sheets 1 and cathode sheets 2, and all be filled with non-solid electrolyte in the hole of anode strip 1 and cathode sheets 2 porous tantalum cores, by the TaO of anti-back-pressure the on anode strip 1 and/or the cathode sheets 2
5Metal oxide film has improved the anti-back-pressure ability and the stability of product greatly.Whole non-solid tantalum electrolytic capacitor structure comprises capacitor casing 3, cathode sheets 1, anode strip 2, cathode leg 4, anode tap 5 and gland 6, and cathode sheets 2 and anode strip 1 all place in the capacitor casing 3; Cathode leg 4 passes gland 6 and is connected with cathode sheets 2; Anode tap 5 passes gland 6 and is connected with anode strip 1; Be characterized in: cathode sheets 2 is the cathode sheets of the porous tantalum core that adopts tantalum metal powder compacting sintering and make, and on the two sides of anode strip 1 and/or cathode sheets 2 all with as insulating and the TaO of anti-the back-pressure
5The burning film medium; Described cathode sheets 2 and anode strip 1 are the sandwich of two-layer cathode sheets folder one deck anode strip, are provided with isolated insulation layer 7 between anode strip 1 and cathode sheets 2; Described cathode sheets 2 also is made up of the porous tantalum core, also can be with the burning film medium as insulating barrier on cathode sheets 2; Structures such as the capacitor casing 3 of non solid electrolyte all tantalum capacitor and gland 6 all are to be made of the tantalum material; Around anode strip 1 and cathode sheets 2, and be filled with non-solid electrolyte in the porous tantalum core hole of anode strip 1 and cathode sheets 2, form non solid electrolyte all tantalum capacitor.In addition, anode strip 1 and cathode sheets 2 can adopt the mode of multicore cascade, have improved its capacitance greatly.Between gland 6 and cathode sheets 2, backing plate 8 can also be set as required.
The manufacture craft of non solid electrolyte all tantalum capacitor described in the utility model is:
1, makes anode strip
Form round pie with very thin tantalum metal powder compacting, under high temperature and vacuum condition, sinter porous matrix into, and then the matrix that sinters is carried out anodic oxidation, all generate one deck TaO on its positive and negative two surfaces
5Film constitutes with TaO
5Film is the anodal matrix of the tantalum powder sintering piece of dielectric.
2, make cathode sheets
Form round pie with very thin tantalum metal powder compacting, under high temperature and vacuum condition, sinter porous matrix into, promptly can be used as the negative pole matrix of tantalum electric capacity.Also can carry out anodic oxidation to the matrix that sinters again, all generate one deck TaO on its positive and negative two surfaces
5Film constitutes with TaO
5Film is the tantalum powder sintering piece negative pole matrix of dielectric.
3, assembling capacitor
Earlier a cathode sheets fuse of capacitor being burn-on is loaded in the tantalum shell behind the lead-out wire, in the tantalum shell of packing into behind the lead-out wire of again the anode strip fuse being burn-on; Another sheet cathode sheets is loaded in the tantalum shell, and first cathode sheets lead-out wire and second cathode sheets lead-out wire linked together draw shell, in case body, pour into non-solid electrolyte again, make non-solid electrolyte be full of anode strip and cathode sheets around, and in the porous tantalum core hole of anode strip and cathode sheets, then gland is pressed into and covers case body, will cover pressure with laser welding and be assembled into non solid electrolyte all tantalum capacitor with the case body welded seal.
In Fig. 1, anode strip is between the two-layer cathode sheets, and the centre has insulating barrier to separate, and is drawn by anode tap; Two cathode sheets are linked together by lead-in wire, and are drawn by the negative electrode negative line.Structures such as the shell of its product all are to be made of the tantalum material.
Embodiment two
Accompanying drawing 2 has provided a kind of another kind of structural representation of the present utility model, by accompanying drawing as can be seen, the structural principle of embodiment two is the same with embodiment one, just present embodiment has been taked the bilayer anode chip architecture, in Fig. 2, ground floor anode strip 9 and second layer anode strip 10 and first cathode sheets 14, second cathode sheets 15 and 16 staggered separating of the 3rd cathode sheets, between each layer anode strip and the contacted faying face of cathode sheets, be provided with first insulating barrier 11, first insulating barrier 12 and the 3rd insulating barrier 13 and the 4th insulating barrier 14; After anode tap 16 is drawn, first cathode sheets 14, second cathode sheets 15 and the 3rd cathode sheets 16 are connected in series after cathode leg 18 is drawn by lead-in wire 17 by lead-in wire 15 serial connections for ground floor anode strip 9 and second layer anode strip 10.Structures such as the shell of its product all are to be made of the tantalum material.Between gland and cathode sheets, backing plate 18 can also be set as required.
Embodiment three
Accompanying drawing 3 has provided a kind of another kind of structural representation of the present utility model, by accompanying drawing as can be seen, the structural principle of embodiment three is the same with embodiment one, in Fig. 3, anode strip 18 is two-layer above N layer anode strip, cathode sheets 19 is the N+1 layer cathode sheets more than three layers, and insulating barrier 20 is the N+2 layer insulating more than four layers; Anode strip 18 and 19 staggered separating of cathode sheets form the structure that two cathode sheets are pressed from both sides an anode strip; After anode tap 4 is drawn, all cathode sheets 19 are connected in series after cathode leg 5 is drawn by lead-in wire all anode strips 18 by the lead-in wire serial connection.All anode strips all are made up of the porous tantalum core, and the layer of metal oxide film dielectric is all adhered on the two sides of anode strip.All cathode sheets also all are made up of how empty tantalum core, also can adhere to the layer of metal oxide film dielectric on it.Structures such as the shell of its product all are to be made of the tantalum material.Between gland and cathode sheets, backing plate 8 can also be set as required.
Claims (5)
1, non solid electrolyte all tantalum capacitor comprises shell, cathode sheets, anode strip, cathode leg, anode tap and gland, and cathode sheets and anode strip all place in the case body; Cathode leg passes gland and is connected with cathode sheets; Anode tap passes gland and is connected with anode strip; It is characterized in that: cathode sheets is the cathode sheets of the porous tantalum core made of tantalum metal powder compacting sintering, and on the two sides of anode strip and/or cathode sheets all with as insulation and the TaO of anti-the back-pressure
5The burning film medium; Described cathode sheets and anode strip are the sandwich of two-layer cathode sheets folder one deck anode strip, are provided with isolated insulation layer between anode strip and cathode sheets.
2, non solid electrolyte all tantalum capacitor as claimed in claim 1 is characterized in that: described cathode sheets is made up of the porous tantalum core, has the burning film medium as insulating barrier on cathode sheets.
3, non solid electrolyte all tantalum capacitor as claimed in claim 1 is characterized in that: the shell of non solid electrolyte all tantalum capacitor, gland are to be made of the tantalum material.
4, non solid electrolyte all tantalum capacitor as claimed in claim 1 is characterized in that: around anode strip and cathode sheets, and be filled with non-solid electrolyte in the porous tantalum core hole of anode strip and cathode sheets, form non solid electrolyte all tantalum capacitor.
5, non solid electrolyte all tantalum capacitor as claimed in claim 1 is characterized in that: anode strip and cathode sheets adopt the mode of multicore cascade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200540141U CN201319325Y (en) | 2008-08-08 | 2008-08-08 | Non-solid electrolyte full-tantalum capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200540141U CN201319325Y (en) | 2008-08-08 | 2008-08-08 | Non-solid electrolyte full-tantalum capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201319325Y true CN201319325Y (en) | 2009-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200540141U Expired - Lifetime CN201319325Y (en) | 2008-08-08 | 2008-08-08 | Non-solid electrolyte full-tantalum capacitor |
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| Country | Link |
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| CN (1) | CN201319325Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339849B (en) * | 2008-08-08 | 2012-02-08 | 株洲宏达电子有限公司 | Non solid electrolyte all tantalum capacitor and preparation thereof |
| GB2485034A (en) * | 2010-11-01 | 2012-05-02 | Avx Corp | Wet electrolytic capacitor with a sintered anode |
-
2008
- 2008-08-08 CN CNU2008200540141U patent/CN201319325Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339849B (en) * | 2008-08-08 | 2012-02-08 | 株洲宏达电子有限公司 | Non solid electrolyte all tantalum capacitor and preparation thereof |
| GB2485034A (en) * | 2010-11-01 | 2012-05-02 | Avx Corp | Wet electrolytic capacitor with a sintered anode |
| US8514547B2 (en) | 2010-11-01 | 2013-08-20 | Avx Corporation | Volumetrically efficient wet electrolytic capacitor |
| GB2485034B (en) * | 2010-11-01 | 2015-07-08 | Avx Corp | Volumetrically efficient wet electrolytic capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 412011 Zhuzhou, Jiangsu Province, South China Road, East District, No. 1297 Patentee after: ZHUZHOU HONGDA ELECTRONICS CO.RP., LTD. Address before: 412000, 1297 Xinhua East Road, lotus pond area, Hunan, Zhuzhou Patentee before: Zhuzhou Hongda Electronics Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090930 |
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| CX01 | Expiry of patent term |