CN205335086U - Improvement structure of coiling type capacitor bank spare and coiling type solid electrolytic capacitor thereof - Google Patents
Improvement structure of coiling type capacitor bank spare and coiling type solid electrolytic capacitor thereof Download PDFInfo
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- CN205335086U CN205335086U CN201520847548.XU CN201520847548U CN205335086U CN 205335086 U CN205335086 U CN 205335086U CN 201520847548 U CN201520847548 U CN 201520847548U CN 205335086 U CN205335086 U CN 205335086U
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Abstract
The utility model discloses a coiling type solid electrolytic capacitor, its improvement structure that includes an encapsulation casing and a coiling type capacitor bank spare, wherein the meat and potatoes of coiling type capacitor bank spare set up in the encapsulating shell is internal, coiling type capacitor bank spare includes a coiling body and a follow an anodal guide pin and a negative pole guide pin that the coiling body extends, the utility model discloses the improvement part lies in, anodal guide pin with among the negative pole guide pin at least one is multilayer structure, multilayer structure includes an iron core and a cladding the copper layer or the copper alloy layer of iron core. By this, can reduce the resistance by a wide margin to can promote electron conducting power.
Description
Technical field
This utility model relates to capacitor technology field, particularly relates to structure-improved and the Winding-type solid electrolytic capacitor thereof of a kind of structure improved convoluted capacitor assembly of capacitor alloy wire material。
Background technology
Progress along with manufacture of semiconductor technology so that the product of semi-conductor packaging starts to develop more accurate, more advanced electronic building brick because of the market demand。For portable electronic product, the expected person of consumer must fully meet lightening, high frequency, multifunction, high-reliability and meet RoHS, therefore conventional liquid electrolysis condenser cannot meet demand gradually, so solid electrolytic capacitor in response to and give birth to。
Solid electrolytic capacitor is the most normal appearance by one of element, aluminium electrolytic capacitor product, is current and the big main flow that use on electrical equipment future。Capacitor possesses two electrodes, i.e. anode and negative electrode, by guide pin (terminal) jointed anode and negative electrode；Guide pin material may select fine copper guide pin, fine silver guide pin, alloy guide pin (CP wire) etc., wherein lead material Different Effects product impedance, conductivity physical characteristic, aluminium electrolytic capacitor product on mainboard after plug-in unit because of impedance magnitude difference, electric current by after cause capacitance temperature to rise and affect use time lifetime, ripple current reliability test life-span, DC current reliability test life-span；Traditional alloy lead wire material is with mild steel for heart yearn, and its appearance first plates one layer of copper component to reduce the composite wire of mild steel product impedance, one layer of stannum of outer layer or tinbase metal level processing。
Current domestic use mostly is CP wire or copper cash, about 6～7m the Ω of copper cash material impedance, wherein copper cash material is in the thermally treated problem (wire material intensity is low) easily having softening of manufacturing process, and pure copper wire or fine silver line are high by 30～60% for precious metal cost, at tinning steel-in-copper line impedence 7～8m Ω, do not meet Low ESR requirement, therefore research uses alloy material wire as guide pin, there is high intensity and toughness, it easily is switched off being molded in final assembly fluvial processes, adapts to the rescap production automation。High more than copper cash at identical elongation percentage situation Tensile strength, and reach Low ESR/conductivity。
Therefore, this utility model people is because the design of known capacitor material design has the necessity of its improvement really, then design and the manufacturing experience of association area it is engaged in for many years with it, study energetically and how in effective cost-effective premise decline low resistance and lifting electric conductivity, can finally develop this utility model under the scrupulous consideration of each side's condition。
Summary of the invention
For the deficiencies in the prior art, the main purpose of this utility model is in that to provide structure-improved and the Winding-type solid electrolytic capacitor thereof of a kind of convoluted capacitor assembly, and it can overcome impedance problems really。
A kind of structure-improved of convoluted capacitor assembly, it includes a wound body and the positive pole guide pin extended from described wound body and a negative electrode guide needle, at least one among described positive pole guide pin and described negative electrode guide needle is multiple structure, and described multiple structure includes an iron core and and is coated with layers of copper or the copper alloy layer of described iron core。
Preferably, the material of described copper alloy layer is Kufil, and described Kufil comprises the silver of 1 to 3%。
Preferably, the material of described copper alloy layer is corronil, and the copper-nickel alloy comprises the nickel of 1 to 3%。
Preferably, described multiple structure also includes the tin layers of a described layers of copper of cladding or described copper alloy layer。
Preferably, described wound body is that the electrolytic paper winding that a cathode foil, an anode foil and are arranged between described cathode foil and described anode foil forms, and the thorn riveting of described positive pole guide pin is in described cathode foil, and the thorn riveting of described negative electrode guide needle is in described anode foil。
A kind of Winding-type solid electrolytic capacitor, including:
One encapsulating housing；And a convoluted capacitor assembly, the major part of described convoluted capacitor assembly is arranged in described encapsulating housing, described convoluted capacitor assembly includes a wound body and the positive pole guide pin extended from described wound body and a negative electrode guide needle, its improvement is in that, at least one among described positive pole guide pin and described negative electrode guide needle is multiple structure, and described multiple structure includes an iron core and and is coated with layers of copper or the copper alloy layer of described iron core。
Preferably, the material of described copper alloy layer is Kufil, and described Kufil comprises the silver of 1 to 3%。
Preferably, the material of described copper alloy layer is corronil, and the copper-nickel alloy comprises the nickel of 1 to 3%。
Preferably, described multiple structure also includes the tin layers of a described layers of copper of cladding or described copper alloy layer。
Preferably, described wound body is that the electrolytic paper winding that a cathode foil, an anode foil and are arranged between described cathode foil and described anode foil forms, and the thorn riveting of described positive pole guide pin is in described cathode foil, and the thorn riveting of described negative electrode guide needle is in described anode foil。
Preferably, described encapsulating housing includes a shell and and is arranged at the capping of one of described shell opening, described capping is provided with two matching holes matched respectively with described positive pole guide pin and described negative electrode guide needle, and a part for described positive pole guide pin and described negative electrode guide needle exposes from said two matching hole respectively。
The technical solution of the utility model has the advantages that
The convoluted capacitor assembly that this utility model embodiment provides, positive pole wherein and/or the alloy guide pin that negative electrode guide needle is multiple structure, and there is high conductivity, good bendable folding endurance, good solderability, good magnetic conductivity, the excellent manufacturability etc. to aluminum staking properties and good butt welding wire rod, therefore the equivalent series resistance of capacitor can be greatly reduced, and electronic conduction ability can be promoted。
Holding above-mentioned, through the improvement of guide pin material, the Winding-type solid electrolytic capacitor that this utility model embodiment provides not only reduces outer lead cost, and has splendid electrically and mechanically characteristic。
Accompanying drawing explanation
Below by drawings and Examples, the technical solution of the utility model is described in further detail。
Fig. 1 is the structural representation of the Winding-type solid electrolytic capacitor of this utility model。
Fig. 2 is the structural representation of the convoluted capacitor assembly of this utility model。
Fig. 3 is the sectional view of the positive pole guide pin of described convoluted capacitor assembly or negative electrode guide needle。
Fig. 4 to Fig. 6 is the processing procedure schematic diagram of the nail joint technique of the positive pole of corresponding described convoluted capacitor assembly and negative electrode guide needle。
Detailed description of the invention
Based on aluminium electrolutic capacitor reliability can because of the impedance of guide pin material difference to some extent, therefore this utility model is made to improve to make it have high conductivity particular for the positive and negative electrode guide pin material in Winding-type solid electrolytic capacitor, and then this utility model capacitor product can have splendid electrical characteristic；Being more than so, this utility model, through the improvement of guide pin material, pushed practical application to by be allowed the mode that the guide pin low cost of capacitor, high yield produce。
Hereinafter especially exemplified by a preferred embodiment, and coordinating institute's accompanying drawings so that embodiment of the present utility model to be described, person with usual knowledge in their respective areas can be understood advantage of the present utility model and effect by content disclosed in the present specification。It addition, this utility model can be implemented by other different specific embodiments or be applied, say, that the every details in this specification also based on different viewpoints and application, can carry out various modification and change under spirit of the present utility model。Additionally, institute's accompanying drawings is only as simple illustrative purposes, not according to the description of actual size, first give chat bright。
Refer to Fig. 1, for the structural representation of the Winding-type solid electrolytic capacitor of this utility model one preferred embodiment。As shown in Figure 1, described Winding-type solid electrolytic capacitor C can be convoluted solid-state aluminum electrolytic capacitor, it includes encapsulating housing 1 and a convoluted capacitor assembly 2, wherein the major part of convoluted capacitor assembly 2 is arranged in encapsulating housing 1, and convoluted capacitor assembly 2 includes a wound body 21 and positive pole guide pin 22 and the negative electrode guide needle 23 extended from a wherein side of wound body 21。
In more detail, encapsulating housing 1 is shell 11 and capping 12 composition, and shell 11 for aluminum hull or by other encapsulating material institute former, and can have an opening 110；Capping 12 can thermosetting, ultraviolet curing or utilize the colloid of catalyst solidifications, and pass through filler or encapsulating mode to take shape in the opening 110 of shell 11；On assembling product, capping 12 is provided with two matching holes 120, for example, described matching hole 120 may utilize diel processing or machining mode is formed, for making a part for positive pole and negative electrode guide needle 22,23 through capping 12 and expose, as the contact being connected with exposed electrical。But the shape of described matching hole 120 and pore size do not limit, and are can adjust according to the structural form of positive pole and negative electrode guide needle 22,23。
Seeing also Fig. 1 and Fig. 2, wherein Fig. 2 is the structural representation of the convoluted capacitor assembly of this utility model one preferred embodiment。As in figure 2 it is shown, described wound body 21 can be the cylindric capacitor body wound together with cathode foil 211, anode foil 212 and an electrolytic paper 213 being arranged between cathode foil 211 with anode foil 212, but it is not limited to this；Other for the present embodiment implement aspect, described wound body 21 also can be square shape capacitor body, its manufacture method includes: first cathode foil 211, anode foil 212 and electrolytic paper 213 are wound together, to form cylindric capacitor body, then again cylinder capacitance core is carried out pressing, in bonding processes and the heat treatment of 50 DEG C～300 DEG C can be coordinated, cylindric capacitor body to be shaped to further square shape capacitor body。
In more detail, positive pole guide pin 22 is between cathode foil 211 and electrolytic paper 213, and negative electrode guide needle 23 is between anode foil 212 and electrolytic paper 213, and positive pole guide pin 22 can distinguish cathode foil 211 in electrical contact and anode foil 212 with negative electrode guide needle 23。And preferably design and be, positive pole guide pin 22 can sting riveting mode and be incorporated in cathode foil 211, to reach effect in electrical contact best between positive pole guide pin 22 and cathode foil 211, simultaneously negative electrode guide needle 23 can sting riveting mode and is incorporated in negative cathode foil 211, to reach effect in electrical contact best between negative electrode guide needle 23 and anode foil 212。
Referring to Fig. 3, it is notable that at least one among the positive pole guide pin 22 of described convoluted capacitor assembly 2 and negative electrode guide needle 23 is multiple structure, it at least includes the layers of copper M2 or copper alloy layer M2 ' of an iron core M1 and cladding iron core M1；In the present embodiment, the available chemical plating of layers of copper M2 or copper alloy layer M2 or plating mode are formed, wherein the material of copper alloy layer can be Kufil or corronil, and Kufil comprises the silver (Ag) of 1 to 3%, and corronil comprises the nickel (Ni) of 1 to 3%。And preferably designing is that the positive pole of described multiple structure, negative electrode guide needle 22,23 can include the tin layers M3 of a cladding layers of copper M2 or copper alloy layer M2 ' again, and tin layers M3 also available chemical plating or plating mode are formed。
Owing to the alloy guide pin (i.e. positive pole, negative electrode guide needle) of multiple structure has high conductivity, good bendable folding endurance, good solderability, good magnetic conductivity, the excellent manufacturability etc. to aluminum staking properties and good butt welding wire rod, therefore the Winding-type solid electrolytic capacitor C that this utility model embodiment provides not only reduces outer lead cost, and has splendid electrically and mechanically characteristic；In addition, through the improvement of guide pin material, the equivalent series resistance (equivalentseriesresistance, ESR) of capacitor can be down to below 12.0m Ω, and ripple (ripple) ability can obtain lifting。From table one, the ESR distribution of traditional capacitor focuses mostly in 11-14m Ω, and the ESR distribution of this utility model capacitor then drops to 9-12m Ω。
Table one
Refer to Fig. 4 to Fig. 6, the feature of the Winding-type solid electrolytic capacitor C that this utility model embodiment provides, advantage and the effect that can reach thereof have illustrated as above, next by the nail joint technique of the positive pole and negative electrode guide needle 22,23 of simply introducing wherein convoluted capacitor assembly 2。
As shown in Figure 4, first, positive pole guide pin 22 is inserted between cathode foil 211 and electrolytic paper 213, wherein positive pole guide pin 22 connects the territory R oxide scale film 214 against cathode foil 211 surface, and negative electrode guide needle 23 is inserted between anode foil 212 and electrolytic paper 213, wherein negative electrode guide needle 23 connects the territory R oxide scale film 214 against anode foil 212 surface。In the present embodiment, the action of configuration positive pole and negative electrode guide needle 22,23 can be implemented by clamping device, but is not limited to this。
As shown in Figures 5 and 6, then, positive pole and negative electrode guide needle 22,23 are carried out shock wave, and the guide pin pin flower formed is flattened。In time being embodied as, the territory R that connects that can align first with nail joint mechanism on pole and negative electrode guide needle 22,23 applies to impact positive force, process connects pin correspondence can connect the part of territory R pierce through, and making it turn down to form guide pin pin flower (not shown), described guide pin pin flower has a bigger angle of bend；Then recycling flattens mechanism by pin flower pressing, and wherein sweeping guide pin pin flower has bigger contact area, smooth in the guide pin petal 24 of positive pole and negative electrode guide needle 22,23 surface in order to being formed。
It should be noted that, utilize the nail joint technique that this utility model embodiment provides, the guide pin petal 24 formed can fully be flattened so that almost complete absence of space between positive pole guide pin 22 and cathode foil 211 and between negative electrode guide needle 23 and anode foil 212, and petal edge is entirely without breaking；Furthermore, the how several guide pin petal 24 formed can along the width proper alignment of negative or positive electrode paper tinsel 211,212, and size and shape identical。
Described in upper, the convoluted capacitor assembly that Ben Mingshi example provides, positive pole wherein and/or the alloy guide pin that negative electrode guide needle is multiple structure, and there is high conductivity, good bendable folding endurance, good solderability, good magnetic conductivity, the excellent manufacturability etc. to aluminum staking properties and good butt welding wire rod, therefore the equivalent series resistance of capacitor can be greatly reduced, and electronic conduction ability can be promoted。
Holding above-mentioned, through the improvement of guide pin material, the Winding-type solid electrolytic capacitor that this utility model embodiment provides not only reduces outer lead cost, and has splendid electrically and mechanically characteristic。
Furthermore, utilize the nail joint technique that this utility model embodiment provides, owing to the guide pin petal of formed positive pole and negative electrode guide needle can fully be flattened, wherein petal edge is entirely without breaking, and guide pin petal can along the width proper alignment of negative or positive electrode paper tinsel, and size and shape identical, therefore positive pole and negative electrode guide needle can respectively and reach the effect in electrical contact of the best between cathode foil and anode foil。
Claims (11)
1. the structure-improved of a convoluted capacitor assembly, it includes a wound body and the positive pole guide pin extended from described wound body and a negative electrode guide needle, it is characterized in that, at least one among described positive pole guide pin and described negative electrode guide needle is multiple structure, and described multiple structure includes an iron core and and is coated with layers of copper or the copper alloy layer of described iron core。
2. the structure-improved of the convoluted capacitor assembly as described in claims 1, it is characterised in that the material of described copper alloy layer is Kufil。
3. the structure-improved of the convoluted capacitor assembly as described in claims 1, it is characterised in that the material of described copper alloy layer is corronil。
4. the structure-improved of the convoluted capacitor assembly as described in claims 2 or 3, it is characterised in that described multiple structure also includes the tin layers of a described layers of copper of cladding or described copper alloy layer。
5. the structure-improved of the convoluted capacitor assembly as described in claims 1, it is characterized in that, described wound body is that the electrolytic paper winding that a cathode foil, an anode foil and are arranged between described cathode foil and described anode foil forms, the thorn riveting of described positive pole guide pin is in described cathode foil, and the thorn riveting of described negative electrode guide needle is in described anode foil。
6. a Winding-type solid electrolytic capacitor, it is characterised in that including:
One encapsulating housing；And a convoluted capacitor assembly, the major part of described convoluted capacitor assembly is arranged in described encapsulating housing, described convoluted capacitor assembly includes a wound body and the positive pole guide pin extended from described wound body and a negative electrode guide needle, its improvement is in that, at least one among described positive pole guide pin and described negative electrode guide needle is multiple structure, and described multiple structure includes an iron core and and is coated with layers of copper or the copper alloy layer of described iron core。
7. the Winding-type solid electrolytic capacitor as described in claims 6, it is characterised in that the material of described copper alloy layer is Kufil。
8. the Winding-type solid electrolytic capacitor as described in claims 6, it is characterised in that the material of described copper alloy layer is corronil。
9. the Winding-type solid electrolytic capacitor as described in claims 7 or 8, it is characterised in that described multiple structure also includes the tin layers of a described layers of copper of cladding or described copper alloy layer。
10. the Winding-type solid electrolytic capacitor as described in claims 6, it is characterized in that, described wound body is that the electrolytic paper winding that a cathode foil, an anode foil and are arranged between described cathode foil and described anode foil forms, the thorn riveting of described positive pole guide pin is in described cathode foil, and the thorn riveting of described negative electrode guide needle is in described anode foil。
11. the Winding-type solid electrolytic capacitor as described in claims 6, it is characterized in that, described encapsulating housing includes a shell and and is arranged at the capping of one of described shell opening, described capping is provided with two matching holes matched respectively with described positive pole guide pin and described negative electrode guide needle, and a part for described positive pole guide pin and described negative electrode guide needle exposes from said two matching hole respectively。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520847548.XU CN205335086U (en) | 2015-10-29 | 2015-10-29 | Improvement structure of coiling type capacitor bank spare and coiling type solid electrolytic capacitor thereof |
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| CN201520847548.XU CN205335086U (en) | 2015-10-29 | 2015-10-29 | Improvement structure of coiling type capacitor bank spare and coiling type solid electrolytic capacitor thereof |
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| CN205335086U true CN205335086U (en) | 2016-06-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810437A (en) * | 2015-10-29 | 2016-07-27 | 钰邦电子（无锡）有限公司 | Improved structure of reeling type capacitor assembly, and reeling type solid electrolytic capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810437A (en) * | 2015-10-29 | 2016-07-27 | 钰邦电子（无锡）有限公司 | Improved structure of reeling type capacitor assembly, and reeling type solid electrolytic capacitor |
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