CN204792451U - Screw bolt manner structure aluminium electrolytic capacitor - Google Patents
Screw bolt manner structure aluminium electrolytic capacitor Download PDFInfo
- Publication number
- CN204792451U CN204792451U CN201520361640.5U CN201520361640U CN204792451U CN 204792451 U CN204792451 U CN 204792451U CN 201520361640 U CN201520361640 U CN 201520361640U CN 204792451 U CN204792451 U CN 204792451U
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- China
- Prior art keywords
- aluminium foil
- pole aluminium
- aluminum
- aluminum hull
- negative pole
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- Expired - Fee Related
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Abstract
The utility model relates to a screw bolt manner structure aluminium electrolytic capacitor, including the aluminum hull and set up the electric capacity core in the aluminum hull, the electric capacity core includes positive wire, negative pole lead wire, anode aluminum foil, cathode aluminum foil and insulated paper, anode aluminum foil, insulated paper, cathode aluminum foil, insulated paper overlap to convolute to contain and soak electrolyte, the insulating cover of moulding of pyrocondensation PVC has been put to aluminum hull outside cover, the aluminum hull internal surface covers with electric capacity core contact surface has endothermic coating, and this aluminum hull surface covers with the sleeve pipe contact surface has the heat conduction coating, the one end of positive wire and negative pole lead wire is riveted with anode aluminum foil, cathode aluminum foil respectively, and the other end stretches out the aluminum hull top respectively and has the flexion of symmetry, this condenser can still keep keeping apart the characteristic under high temperature, improved the electrolysis received ripple current under the high frequency state ability greatly, during the condenser installation, can prevent effectively that the condenser from taking place to slide before fixed on the circuit.
Description
Technical field
The utility model belongs to technical field of electrolytic, particularly relates to LED high-voltage Al Electrolytic Capacitors with Low Impedance at High Frequency.
Background technology
Screw bolt type structure aluminum electrolytic capacitor, is widely used in the fields such as frequency converter, ups power, inverter, photovoltaic, military project, mainly plays the functions such as filtering, energy conversion, power delivery, is one of components and parts of key; It need possess the characteristic of high frequency, low-loss, Low dark curient, possesses good thermal diffusivity simultaneously, controls the equivalent series resistance of product, guarantee properties of product.The electrolyte of electrolytic capacitor, then require the flash over voltage and the oxidation efficiency that improve electrolyte, reduce product leakage current, improve the useful life of product.
Electronic devices and components high temperature resistantization will be an indispensable measure.LED, automotive electronics drive circuit, particularly at automobile engine position, during work, environment temperature even reaches 140 DEG C, the usual serviceability temperature of aluminium electrolytic capacitor uses within the scope of-25 DEG C ~+70 DEG C, and when temperature is more than 140 DEG C, the leakage current of capacitor can increase severely, resistance to ripple ability declines rapidly, during work, capacitor caloric value also will increase severely thereupon, and heat directly can make capacitor expansion bulge, affects operating characteristic and the useful life of capacitor.
Utility model content
For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide screw bolt type structure aluminum electrolytic capacitor, and it possesses the characteristic of high frequency, low-loss, Low dark curient, and the effective series resistance of product is controlled, and the heat dissipation capacity of product is controlled.
To achieve these goals, the technical solution adopted in the utility model is: screw bolt type structure aluminum electrolytic capacitor, comprise aluminum hull and be arranged at the capacitor core in aluminum hull, described capacitor core comprises positive wire, negative wire, positive pole aluminium foil, negative pole aluminium foil and insulating paper, described positive pole aluminium foil, insulating paper, negative pole aluminium foil, insulating paper overlapping winding impregnation electrolyte; Pyrocondensation PVC insulated plastic cover is equipped with outside described aluminum hull; Described aluminum hull inner surface and capacitor core contact-making surface are covered with heat absorbing coating, and this aluminum hull outer surface and sleeve interface are covered with heat conducting coating; One end of described positive wire and negative wire respectively with positive pole aluminium foil, negative pole aluminium foil riveting, the other end stretches out aluminum hull top respectively and has symmetrical bend, and the mouth of hook of bend is outside.
Further, described negative pole aluminium foil lower limb is concordant with insulating paper edge.
Further, described positive pole aluminium foil, negative pole aluminium foil are high-purity formed aluminum foil.
Further, described insulating paper is that RA glass fiber material is made.
Further, to be coating-forming voltage to energize formed aluminum foil in the corrosion of 10V described negative pole aluminium foil.
Beneficial effect: compared with prior art, first, the utility model is rational in infrastructure, long service life, good seal performance, working stability under high temperature, lead-in wire is connected firmly.By adopting RA glass fibre as insulating barrier, at high temperature still can keep isolation characteristic, melting under preventing high temperature or heat from concentrating situation and causing capacitance short-circuit; Substantially increase electrolysis ability by ripple current under high frequency state, reduce the impedance of electrolysis under high frequency state further simultaneously, increase the useful life of product.
The second, negative pole aluminium foil lower limb described in the utility model is concordant with insulating paper edge, is convenient to product heat radiation; The environmental protection of this product system is pollution-free product, belongs to novel energy-conserving product, due to properties of product reach 105 DEG C 6000 hours, under equal environment for use, improve the useful life of 3 times.
3rd, positive and negative electrode lead-in wire arranges bend, when capacitor is installed, can effectively prevent capacitor fixing on circuit before slide, be convenient to install and fix.
Above-described embodiment is only and clearly the present invention is described, and is not the restriction to embodiment of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And these belong to connotation of the present invention the apparent change of extending out or variation still belong to protection scope of the present invention.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, aluminum hull; 2, positive pole aluminium foil; 3, negative pole aluminium foil; 4, insulating paper; 5, sleeve pipe; 6, heat absorbing coating; 7, heat conducting coating; 21, positive wire; 31, negative wire; 8, bend.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1 below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described in detail.
As shown in Figure 1, screw bolt type structure aluminum electrolytic capacitor, comprise aluminum hull 1 and be arranged at positive wire 21, negative wire 31, positive pole aluminium foil 2, negative pole aluminium foil 3 and the insulating paper 4 in aluminum hull 1, described positive pole aluminium foil 2, insulating paper 4, negative pole aluminium foil 3, insulating paper 4 overlapping winding impregnation electrolyte; Be equipped with sleeve pipe 5 outside described aluminum hull, this sleeve pipe 5 is pyrocondensation PVC insulated plastic cover; Described aluminum hull inner surface and capacitor core contact-making surface are covered with heat absorbing coating 6, and this aluminum hull outer surface and sleeve interface are covered with heat conducting coating 7; One end of described positive wire 21 and negative wire 31 is riveted with positive pole aluminium foil 2, negative pole aluminium foil 3 respectively, and the other end stretches out aluminum hull top respectively and has symmetrical bend 8, and the mouth of hook of bend 8 is outside.
As the further preferred version of the utility model, described negative pole aluminium foil lower limb is concordant with insulating paper edge.
As the further preferred version of the utility model, described positive pole aluminium foil, negative pole aluminium foil are high-purity formed aluminum foil.
As the further preferred version of the utility model, described insulating paper is that RA glass fiber material is made.
As the further preferred version of the utility model, to be coating-forming voltage to energize formed aluminum foil in the corrosion of 10V described negative pole aluminium foil.
Product after testing
Technical characteristic: 105 DEG C 6000 hours
Technical parameter: working temperature :-40 DEG C ~ 105 DEG C-25 DEG C ~ 105 DEG C
Voltage: 25V ~ 100V160V ~ 500V
Leakage current: 20 DEG C of rated voltage test≤0.01CV or 1.5mA after 5 minutes in addition, gets minimum value.
Capacity tolerance :-20% ~+20%
Above are only a kind of embodiment of the present utility model; not in order to limit the utility model; those skilled in the art can make various changes said structure and improve; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. screw bolt type structure aluminum electrolytic capacitor, comprise aluminum hull and be arranged at the capacitor core in aluminum hull, described capacitor core comprises positive wire, negative wire, positive pole aluminium foil, negative pole aluminium foil and insulating paper, described positive pole aluminium foil, insulating paper, negative pole aluminium foil, insulating paper overlapping winding impregnation electrolyte; Pyrocondensation PVC insulated plastic cover is equipped with outside described aluminum hull; Described aluminum hull inner surface and capacitor core contact-making surface are covered with heat absorbing coating, and this aluminum hull outer surface and sleeve interface are covered with heat conducting coating; It is characterized in that, one end of described positive wire and negative wire respectively with positive pole aluminium foil, negative pole aluminium foil riveting, the other end stretches out aluminum hull top respectively and has symmetrical bend, and the mouth of hook of bend is outside.
2. screw bolt type structure aluminum electrolytic capacitor as claimed in claim 1, it is characterized in that, described negative pole aluminium foil lower limb is concordant with insulating paper edge.
3. screw bolt type structure aluminum electrolytic capacitor as claimed in claim 2, it is characterized in that, described positive pole aluminium foil, negative pole aluminium foil are high-purity formed aluminum foil.
4. screw bolt type structure aluminum electrolytic capacitor as claimed in claim 2, it is characterized in that, described insulating paper is that RA glass fiber material is made.
5. screw bolt type structure aluminum electrolytic capacitor as claimed in claim 2, is characterized in that, to be coating-forming voltage to energize formed aluminum foil in the corrosion of 10V described negative pole aluminium foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520361640.5U CN204792451U (en) | 2015-05-29 | 2015-05-29 | Screw bolt manner structure aluminium electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520361640.5U CN204792451U (en) | 2015-05-29 | 2015-05-29 | Screw bolt manner structure aluminium electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204792451U true CN204792451U (en) | 2015-11-18 |
Family
ID=54532450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520361640.5U Expired - Fee Related CN204792451U (en) | 2015-05-29 | 2015-05-29 | Screw bolt manner structure aluminium electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204792451U (en) |
-
2015
- 2015-05-29 CN CN201520361640.5U patent/CN204792451U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20190529 |