CN201629232U

CN201629232U - Novel structure of capacitor

Info

Publication number: CN201629232U
Application number: CN2009202927882U
Authority: CN
Inventors: 林清封; 陈明宗; 李铭诚
Original assignee: YUBANG ELECTRONIC (WUXI) CO Ltd
Current assignee: YUBANG ELECTRONIC (WUXI) CO Ltd
Priority date: 2009-12-09
Filing date: 2009-12-09
Publication date: 2010-11-10
Anticipated expiration: 2019-12-09

Abstract

The utility model discloses a novel structure of a capacitor. The capacitor comprises a capacitor core and a cladding layer; the capacitor core consists of anode foil, cathode foil and an isolation layer between the anode foil and the cathode foil, wherein the anode foil adopts etched conductive metallic foil of which a dielectric layer is arranged on the surface, a conducting wire as the anode is arranged at one end of the anode foil, the cathode foil adopts etched/ non-etched anodized/ non-anodized metallic foil, and a conducting wire as the cathode is arranged at one end of the cathode foil. The novel structure of capacitor is characterized in that the cladding layer is arranged outside the capacitor core in the following ways that either the cladding layer is molded and shaped to be wrapped outside the capacitor core, or filling materials such as resin are filled between the capacitor core and an aluminum housing, and furthermore the cladding layer is clad on the top surface of the capacitor core, and therefore the manufacturing cost and the space of a cover plate are saved and the capacitor is miniaturized.

Description

A kind of neotectonics of capacitor

Technical field

The utility model relates to a kind of capacitor, particularly, the skin that relates to the Wound capacitor core is all around only with molded coating, perhaps between capacitor core and aluminum hull, fill and to coat to the materials such as resin on capacitor core top, omit the cost of manufacture of cover plate and required space thereof thus, reach capacitor and be able to miniaturization.

Background technology

Capacitor, can be divided into electrolytic capacitor and non-polarized capacitor substantially by its function, electrolytic capacitor can divide aluminum capacitor device and Tantal condenser two big classes again by anodal material, and wherein aluminum electrolytic capacitor can be divided into convoluted and stack-up type again by its component construction.

Present used conventional aluminum electrolytic capacitor, be with through overetched raffinal paper tinsel as anode foils, its surface is through anodized mistake, as dielectric substance layer.Between Cathode Foil and anode foils, by being formed separator with thin paper or cloth film, its electrolyte is adsorbed by this thin paper or cloth film.And the separator of solid electrolytic capacitor is as the adhesive-bonded fabric of main material or the barrier paper of carbonization with various fibers.

Above-mentioned aluminum electrolytic capacitor, as shown in Figure 1, general manufacture method is: at first make anode foils 11, form the dielectric layer oxide-film on anode foils 11 surfaces, anode foils 11 1 ends are drawn lead 12 as anode, and thick external diameter support portion 17 also is set between lead 12 and anode foils 11; Secondly, make Cathode Foil 13 with metallic aluminium, the one end is drawn lead 14 as negative electrode, and thick external diameter support portion 18 is set between lead 14 and Cathode Foil 13; At last, between anode foils 11 and Cathode Foil 13 separator 15 is set, separator 15 is reeled with anode foils 11 and Cathode Foil 13 again, blended rubber band 19 forms convoluted capacitor core 16 with its fixed in shape.

During making, 60～90 ℃ of of of of of of temperature of under, capacitor core 16 is put into 2～10% Ji Er Suan held the liquid electrochemical treatments 10～30 minutes; 130～280 ℃ of of of of of of temperature of Under, toasted 60～180 minutes then, make the separator carbonization; 20～35 ℃ of of of of of of temperature of Capacitor core after the carbonization is again with, normal pressure immersed down in the solution that contains organic monomer and oxidant 10～40 minutes, take out back polymerization under normal pressure, 30～210 ℃ of of of of of of of excess of through temperatures, 0.5～6 hour time, form the high conductivity organic polymer, wash polymeric residues at last again off.

During assembling, as shown in Figure 2,, and then cover with a cover plate 21 lids with capacitor core 16 aluminum hull 2 of packing into.The surface of cover plate 21 need be pre-formed through hole to the position of

lead

12,14 relatively, after cover plate 21 passes through lead, lives the through hole driving fit by

support portion

17,18 contacts of lead, then, by the extruder tool, the bundle jewelling shell 2 upper end mouths of pipe make the aluminum hull 2 upper end mouths of pipe and cover plate 21 complete driving fits; At last, will finish the electrolytic capacitor of encapsulation, through 105～145 ℃ of excess temperatures, the burin-in process of 0.5～10 hour time.

But above-mentioned capacitor core 16 is packed into behind the aluminum hull 2, must cover with a cover plate 21 lids again, no matter and the lid utmost point 21 be pack into aluminum hull 2 inside or be installed in the top of aluminum hull 2, the capital increases the height and the volume of whole capacitor device, so will cause the volume of capacitor integral body can't dwindle the development of limiting element miniaturization.

Summary of the invention

The purpose of this utility model is, at the problems referred to above, proposes a kind of neotectonics of capacitor, can omit cover plate, the volume of capacitor integral body can significantly be dwindled, with the development trend of equivalence element miniaturization.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of neotectonics of capacitor, described capacitor comprises a capacitor core of being made up of anode foils, the separator of Cathode Foil and between anode foils and Cathode Foil, and the shell that capacitor core can be coated wherein, between described capacitor core and the shell, be filled with the resin fillers that coats to the capacitor core top end face, promptly do not need to install cover plate, overall volume is promptly dwindled.

Further, described shell is an aluminum hull.

A kind of neotectonics of capacitor, described capacitor comprises a capacitor core of being made up of anode foils, the separator of Cathode Foil and between anode foils and Cathode Foil, and the shell that capacitor core can be coated wherein, described in order to hold the shell of capacitor core, around the molded outside that is coated on capacitor core, so not only can omit cover plate, also can omit aluminum hull, overall volume can be littler.

The neotectonics of capacitor of the present utility model, when the coating layer of capacitor core when being molded, the shape of its coating layer can be arbitrary shape, and is able to plug-in type or surface mount (SMD) formula is combined in electronic product, and this is another purpose of the present utility model.

Beneficial effect

Be located at the coating layer of capacitor core outside,, or tamp between capacitor core and aluminum hull and lid covers the end face of capacitor core with packing materials such as resins by molded, the cost of manufacture and the space of omitting cover plate thus, capacitor is able to miniaturization.

Description of drawings

Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the schematic perspective view of existing electrolytic capacitor;

The schematic perspective view that Fig. 2 packs aluminum hull into and covers with aluminium lid for existing electrolytic capacitor;

Fig. 3 is the capacitor core schematic perspective view of the neotectonics of a kind of capacitor of the utility model;

Fig. 4 is the combination generalized section of the neotectonics of a kind of capacitor of the utility model;

Fig. 5 is the second embodiment schematic diagram of the neotectonics of a kind of capacitor of the utility model.

In conjunction with the accompanying drawings, Reference numeral is as follows among the utility model embodiment:

The 11-anode foils; The 12-lead; The 13-Cathode Foil; The 14-lead; The 15-separator; The 16-capacitor core; 17,18-support portion: 19-adhesive tape; The 2-aluminum hull; The 21-aluminium lid; The 3-anode foils; The 31-lead; The 4-Cathode Foil; The 41-lead; The 5-separator; 6: capacitor core; The 71-aluminum hull; The 72-resin fillers; 8-molding coating layer.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.

The neotectonics of a kind of capacitor of the utility model, as shown in Figure 3, this capacitor comprises an anode foils 3, the separator 5 of a Cathode Foil 4 and between anode foils 3 and Cathode Foil 4; Wherein, anode foils 3 is with formed once overetched conductive metal foil, and the surface of anode foils 3 forms the oxidation dielectric layer through anodized, and anode foils 3 one ends are drawn lead 31 as anode; Cathode Foil 4 is with one through etching or do not pass through etching, and through anodized or do not form through the metal forming of anodized, an end of Cathode Foil 4 is drawn lead 41 as negative electrode; After anode foils 3, Cathode Foil 4 and separator 15 be rolled into column type, with fixed in shape, be combined into capacitor core 6 with adhesive tape 19.

As shown in Figure 4, capacitor of the present utility model, the outside of its capacitor core 6 is provided with an aluminum hull shell 71, after capacitor core 6 is packed aluminum hull 71 into, be filled between capacitor core 6 and the aluminum hull 71 with resin fillers 72 again, and coat to the top end face of capacitor core 6, after capacitor core 6 peripheries coat fully with fillers such as resin 72, can avoid the electrolyte of capacitor core 6 inside to come off, cover plate can omit, and the volume of capacitor integral body can be littler.

As shown in Figure 5, be another embodiment of capacitor of the present utility model, capacitor of the present utility model, can directly form molding coating layer 8 again in the outside of capacitor core 6, molding coating layer 8 is coated around the outside of capacitor core 6 fully, so, can directly be used as the shell of capacitor core 6, not need to be provided with again aluminum hull with molding coating layer 8.And when the shell of capacitor core 6 was molding coating layer 8, the shape of molding coating layer 8 can be arbitrary shape, can be cylindrical, square column type, pancake or other shapes, when making platypelloid type, can be applicable to further that the electronic product of microminaturization uses.

By the above as can be known; capacitor of the present utility model; by between capacitor core and aluminum hull, inserting resin fillers 72; form molding coating layer 8 around perhaps directly in the capacitor core outside; all can constitute coating and protection, can avoid capacitor core to be destroyed, also can economize the space of lower cover capacitor core; so the volume of capacitor can significantly dwindle, and meets the development trend of miniaturization.

When capacitor of the present utility model is when forming molding coating layer 8 in the outside of capacitor core 6, can be further according to whether installing circuit board, and be incorporated into electronic product with plug-in type, perhaps be combined on the electronic product and use in surface mount mode (SMD).And molding coating layer 8 shapes can no longer be subjected to the restriction of the profile of capacitor core, no matter be that cylindrical, square column type, pancake or other shapes all can be implemented; Exactly because the relative lifting of volume utilization has met the development trend of miniaturization of components.

Because capacitor of the present utility model, the space and the setting of having omitted cover plate can be installed with the thick external diameter support portion that is used for supporting cover plate in the same with the prior art again lower end at positive wire and cathode wire; But for the existing lead that has been installed with thick external diameter support portion, be applicable to that also filling of the present utility model coats or molded coating, so capacitor of the present utility model, coating to capacitor core can't be influenced because lead whether is installed with thick external diameter support portion, the electrolyte that also can not be subjected to capacitor core is to use solid electrolyte or liquid electrolyte and influenced, and both all can implement to use.

It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims

1. the neotectonics of a capacitor, described capacitor comprises a capacitor core of being made up of anode foils, the separator of Cathode Foil and between anode foils and Cathode Foil, and the shell that capacitor core can be coated wherein, it is characterized in that, between described capacitor core and the shell, be filled with the resin fillers that coats to the capacitor core top end face.

2. the neotectonics of capacitor according to claim 1 is characterized in that, described shell is an aluminum hull.

3. the neotectonics of a capacitor, described capacitor comprises a capacitor core of being made up of anode foils, the separator of Cathode Foil and between anode foils and Cathode Foil, and the shell that capacitor core can be coated wherein, it is characterized in that, the described shell that is used for holding capacitor core is around the molded outside that is coated on capacitor core.