CN204792440U

CN204792440U - Resistant reverse voltage aluminium electrolytic capacitor

Info

Publication number: CN204792440U
Application number: CN201520367851.XU
Authority: CN
Inventors: 杨璐
Original assignee: Suzhou Xielv Network Technology Co Ltd
Current assignee: Suzhou Xielv Network Technology Co Ltd
Priority date: 2015-06-02
Filing date: 2015-06-02
Publication date: 2015-11-18
Anticipated expiration: 2025-06-02

Abstract

The utility model relates to a resistant reverse voltage aluminium electrolytic capacitor. Including aluminum hull and electric capacity core, the electric capacity core includes that anodal paper tinsel, negative pole paper tinsel, package wind the electrolytic paper of anodal paper tinsel and negative pole paper tinsel to reach the positive guide pin and the negative guide pin that set up respectively on anodal paper tinsel and negative pole paper tinsel, positive guide pin and negative guide pin's one end 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, and the hook mouth of flexion is outside, the aluminum hull inner wall has coated an insulating film, and the interval between electric capacity core and the aluminum hull inner wall is 0.5 millimeter, the negative pole paper tinsel adopts pressurization negative pole paper tinsel. The utility model discloses condenser capacitance volume volume ratio is bigger, and resistant reverse withstand voltage foot.

Description

The aluminium electrolytic capacitor of resistance to reverse voltage

Technical field

The utility model relates to a kind of aluminium electrolytic capacitor of resistance to reverse voltage.

Background technology

Along with people are to the enhancing of the consciousness of environmental protection, the low-carbon (LC) such as LED, automotive electronics, environment-friendly products will replace incandescent lamp, how to meet LED, automotive electronics drive circuit hot environment, and 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 the aluminium electrolytic capacitor of resistance to reverse voltage 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.

In addition, owing to carrying out the capacitor core of impregnation electrolyte process likely because installation accuracy is not high, produced and crookedly encountered aluminum hull inwall, and made aluminum hull cause capacitor core to be short-circuited phenomenon.Along with the size of various electronic system, comprise day by day reducing of thickness, other electronic components meet the requirement of this trend substantially, and this also requires that electrolytic capacitor does not lose on the basis of previous level in its performance, and overall dimension is miniaturized further; And due to anode foil voltage be zero, the resistance to reverse withstand voltage deficiency of this kind of capacitor, thus cause resistance to ripple indifferent, in use, easily breaks down and even damages.

Summary of the invention

For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of aluminium electrolytic capacitor of resistance to reverse voltage, and structure is simple, capacitance volume ratio is larger, and resistance to reverse withstand voltage foot.

To achieve these goals, the technical solution adopted in the utility model is:

The aluminium electrolytic capacitor of resistance to reverse voltage, comprise aluminum hull and capacitor core, described capacitor core comprises cathode foil, anode foil, holds the electrolytic paper of cathode foil and anode foil, and the positive guide pin be separately positioned in cathode foil and anode foil and negative guide pin, one end of described positive guide pin and negative guide pin 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; Described aluminum hull inwall is covered with a dielectric film, is spaced apart 0.5 millimeter between capacitor core and aluminum hull inwall, described anode foil adopts pressurization anode foil.

Further, the voltage of described pressurization anode foil is more than 3V.

Further, described dielectric film is bonded in aluminum hull inwall.

Compared with prior art, the beneficial effects of the utility model are:

First, the utility model structure is simple, reasonable in design, the overall dimension of electrolytic capacitor can be reduced on the basis that maintenance function and performance do not lose previous level, and by using negative paper tinsel pressurization to make the resistance to reverse voltage ability of capacitor improve, final resistance to ripple ability promotes greatly, better meets the instructions for use of welding machine and these equipment of frequency converter.

The second, positive and negative guide pin arranges bend, when capacitor is installed, can effectively prevent capacitor fixing on circuit before slide, be convenient to install and fix.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

In figure: 1, aluminum hull; 2, capacitor core; 3, positive guide pin; 4, negative guide pin; 5, dielectric film; 6, bend.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Aluminum hull 1 and capacitor core 2 is comprised see Fig. 1 the utility model, described capacitor core 2 comprises cathode foil, anode foil, holds the electrolytic paper of cathode foil and anode foil, and the positive guide pin 3 be separately positioned in cathode foil and anode foil and negative guide pin 4, one end of described positive guide pin 3 and negative guide pin 4 respectively with positive pole aluminium foil, negative pole aluminium foil riveting, the other end stretches out aluminum hull top respectively and has symmetrical bend 6, and the mouth of hook of bend 6 is outside; Described aluminum hull inwall is covered with a dielectric film 5, is spaced apart 0.5 millimeter between capacitor core 2 and aluminum hull 1 inwall, described anode foil adopts pressurization anode foil.

Described aluminum hull 1 inwall is bonded with dielectric film 5, and described anode foil adopts pressurization anode foil; The voltage of described pressurization anode foil is more than 3V.

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

1. the aluminium electrolytic capacitor of resistance to reverse voltage, comprise aluminum hull and capacitor core, described capacitor core comprises cathode foil, anode foil, holds the electrolytic paper of cathode foil and anode foil, and the positive guide pin be separately positioned in cathode foil and anode foil and negative guide pin, it is characterized in that: one end of described positive guide pin and negative guide pin 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; Described aluminum hull inwall is covered with a dielectric film, is spaced apart 0.5 millimeter between capacitor core and aluminum hull inwall, described anode foil adopts pressurization anode foil.

2. the aluminium electrolytic capacitor of resistance to reverse voltage according to claim 1, is characterized in that: the voltage of described pressurization anode foil is more than 3V.

3. the aluminium electrolytic capacitor of resistance to reverse voltage according to claim 1, is characterized in that: described dielectric film is bonded in aluminum hull inwall.