CN201196909Y

CN201196909Y - Microminiature overline metalizing thin film medium capacitor for restraining power supply electromagnetic interference

Info

Publication number: CN201196909Y
Application number: CNU200820074645XU
Authority: CN
Inventors: 唐军
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-06
Filing date: 2008-05-06
Publication date: 2009-02-18
Anticipated expiration: 2018-05-06

Abstract

The utility model relates to a microminiature power and electromagnetic interference resistant overline metalized film dielectric capacitor, which consists of a shell, a capacitor mandrel and a leading wire, and is characterized in that the capacitor mandrel adopts two kinds of film dielectric of polyester and polypropylene; the polyester and the polypropylene are respectively provided with a metalized mesh electrode with a wavy edge, and the mesh electrodes are staggered, stacked and winded into a whole; and the internal structure of the capacitor mandrel adopts the means of parallel connection. A joint point of the mesh electrode structure is equivalent to a fuse; once the capacitor is damaged due to external factors, the equivalent fuse can be safely turned off, so that the safety is high; and the edges of the electrodes are wavy, so that a metal spraying layer which is formed by the metal spraying technique is firmly attached to a metalized film and the high-current impact resistance is also greatly improved. Simultaneously, the capacitor has the advantages of small volume, light weight, stable electric capacity, small temperature coefficient, low cost, low resource consumption and so on, and can be widely applied to power and electromagnetic interference resistant overline circuits of lighting electronic energy-saving lamps, ballasts and so on.

Description

Microminiature suppresses power supply electromagnetic interference cross-line metallized film dielectric capacitor

Technical field

The utility model relates to a kind of capacitor, and particularly a kind of microminiature suppresses power supply electromagnetic interference cross-line metallized film dielectric capacitor.

Background technology

At present, along with the aggravation of world wide energy-intensive, people strengthen promotion efficiency in the electronic energy-saving lamp and the ballast application facet of illumination class.Therefore for the safety element of making electric ballast and electricity-saving lamp---the performance, the index that suppress power supply electromagnetic interference cross-line capacitor are all had higher requirement, not only safe and reliable, and meet International Power IEC384-65 of committee and U.S. UL1414-2000 safety standard.Guarantee that effectively the capacitor two ends apply 2000VAC/1500VAC interchange (50/60Hz) and must not burn and explode in 1 minute, and want cube littler.Obviously for existing common CL62 (loss is big, dangerous) and CBB62 (volume is big) capacitor in the market, do not satisfied above-mentioned requirements.

More seriously, because above-mentioned capacitor because of the influence of volume and cost, forces a large amount of in the market electronic energy-saving lamps of selling all to adopt the what is called of no any safety measure to suppress power supply electromagnetic interference cross-line capacitor; Bring serious potential safety hazard to the user, even fire!

Therefore, continually developing novel product to adapt to the demand in market, will be one of new problem of facing of these those skilled in the art.

The utility model content

The purpose of this utility model is to overcome above-mentioned weak point, provides a kind of simple in structure, and technology is easy, dependable performance, and efficient energy-saving, widely used microminiature suppresses power supply electromagnetic interference cross-line metallized film dielectric capacitor.

The technical scheme that the utility model adopted is for achieving the above object: a kind of microminiature suppresses power supply electromagnetic interference cross-line metallized film dielectric capacitor, is made of housing, capacitor body and lead-in wire; It is characterized in that described capacitor body adopts polyester, two kinds of thin film dielectricss of polypropylene, be respectively equipped with the mesh electrode of metallization wavy edge on it, staggered stack is reeled and is formed one; Described capacitor body internal structure is parallel.

The beneficial effects of the utility model are: the mesh electrode structure that is provided with, and its tie point promptly is equivalent to fuse, once capacitor is influenced by external factor, hits as the thunder and lightning high-voltage pulse, and capacitor could not burn and explode yet! Can make the local open circuit of mesh electrode by equivalent fuse, reduce the capacitance of capacitor, the major safety problems of avoiding short circuit to cause.Anti-interference cross-line capacitor on the electronic energy-saving lamp in the past, major part all is the ordinary capacitor of no any fail safe.In case puncture light open circuit then, heavy then combustion explosion etc.; Bring serious potential safety hazard to the user, even fire! Moreover this electrode edge undulate, making and adopt formed gilding layer of metal spraying technology and metallized film adhesion-tight, the impact property of anti-big electric current also improves greatly.This capacitor has advantages such as volume is little, in light weight, capacitance stable, temperature coefficient is little, cost is low, consumes resources is few simultaneously; Can be widely used in the throwing light on electronic energy-saving lamp of class and ballasts etc. suppress in the cross-line circuit of power supply electromagnetic interference.

In a word, that the utility model is used is parallel, the inhibition power supply electromagnetic interference cross-line capacitor of wavy edge, net-like metallic polyester/polypropylene thin film fabrication, not only can satisfy the installation requirement of miniature energy-saving light fixture, the more important thing is the safety problem that has solved this bulk capacitor; And be convenient to the installation and the use of electronic energy-saving lamp.

Description of drawings

Fig. 1 is that the common CL21 or the CBB21 capacitor core minor structure that are applied at present in the electronic energy-saving lamp are dissected schematic diagram;

Fig. 2 is that the utility model capacitor core minor structure is dissected schematic diagram;

Among the figure: 1 medium, 2 electrodes, 3 mesh electrodes, 4 wavy edge, 5 fuses.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, details are as follows to embodiment, structure, feature that foundation the utility model provides:

Referring to Fig. 2, a kind of microminiature suppresses power supply electromagnetic interference cross-line metallized film dielectric capacitor, is made of housing, capacitor body and lead-in wire; It is characterized in that described capacitor body adopts polyester, two kinds of thin film dielectricss 1 of polypropylene, be respectively equipped with the mesh electrode 3 of metallization wavy edge 4 on it, staggered stack is reeled and is formed one; Described capacitor body internal structure is parallel.

The tie point equivalence of described mesh electrode 3 is a fuse 5.

Referring to Fig. 2, the utility model improves at the deficiency that has the metallized film medium cross-line capacitor that is made of generic media 1 and electrode 2 now shown in Figure 1; Make mesh electrode 3 and be provided with the metallized film of wavy edge 4, MPET metallized polyester/metallization MPP polypropylene film, can form fuse 5 with the capacitor body behind this winding film, effectively ensure the security feature of capacitor with several electrode units and tie point equivalence thereof.Because wavy edge 4 makes mesh electrode 3 contact firmly with the coat of metal on the medium 1, therefore, has improved anti-rush of current greatly.

By as follows to the safety test conclusion of the utility model and existing capacitor of the same type such as CH62-275VAC-0.047 μ F:

Test method: carry out International Power IEC384-65 of committee and U.S. UL1414-2000 safety standard, two ends apply 2000VAC/1500VAC and exchange (50/60Hz) 1 minute, must not burn and explode!

A group: purchase from the market in the electronic energy-saving lamp that comes, what remove is used to suppress power supply electromagnetic interference cross-line metallized film dielectric capacitor, i.e. CL21-400V-0.047 μ F.

Test: two ends apply 2000VAC/1500VAC and exchange (50/60Hz) 1 minute.

The blast of burning immediately when the capacitor two ends are applied to 1000VAC, capacitor is badly damaged!

The B group: the utility model, promptly microminiature suppresses power supply electromagnetic interference cross-line metallized film dielectric capacitor.

Test: two ends apply 2000VAC/1500VAC and exchange (50/60Hz) 1 minute.

After these capacitor two ends were applied to 2000VAC and delayed time 1 minute, capacitor was still quiet stable, and outward appearance is good.

Conclusion (of pressure testing): the utility model capacitor performance is safe and reliable, satisfies the safety requirement fully.

Above-mentionedly with reference to embodiment this microminiature being suppressed the detailed description that power supply electromagnetic interference cross-line metallized film dielectric capacitor carries out, is illustrative rather than determinate; Can adopt various metallic film medium to make the wire mesh electrode of various different sizes and shape as required.Can set different parameters, produce the capacitor of some kinds of specifications; Therefore in the variation and the modification that do not break away under the utility model general plotting, should belong within the protection range of the present utility model.

Claims

1. a microminiature suppresses power supply electromagnetic interference cross-line metallized film dielectric capacitor, is made of housing, capacitor body and lead-in wire; It is characterized in that described capacitor body adopts polyester, two kinds of thin film dielectricss of polypropylene, be respectively equipped with the mesh electrode of metallization wavy edge on it, staggered stack is reeled and is formed one; Described capacitor body internal structure is parallel.

2. microminiature according to claim 1 suppresses power supply electromagnetic interference cross-line metallized film dielectric capacitor, it is characterized in that the tie point equivalence of described mesh electrode is fuse.