CN216562788U

CN216562788U - Double-sided metalized capacitor

Info

Publication number: CN216562788U
Application number: CN202123205067.3U
Authority: CN
Inventors: 朱开宇
Original assignee: Huizhou Yuxinyuan Electronics Co ltd
Current assignee: Huizhou Yuxinyuan Electronics Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-17
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a double-sided metalized capacitor and relates to the field of capacitors. The double-sided metalized capacitor comprises a capacitor main body, wherein the capacitor main body comprises an anode adhesion film, a cathode adhesion film and electrolytic insulating paper, the electrolytic insulating paper is in two groups and is respectively attached to the outer surfaces of the anode adhesion film and the cathode adhesion film, and the front surface and the back surface of the anode adhesion film and the back surface of the cathode adhesion film are coated with metal coatings. According to the double-sided metalized capacitor, the positive and negative surfaces of the anode adhesion film and the cathode adhesion film are coated with the metal coatings, so that compared with the traditional metalized film capacitor, the capacitor has the capacity attenuation far smaller than that of the latter, and in the long-term use process, especially in the time with high AC harmonic content, the service life is far longer than that of the traditional metalized film capacitor.

Description

Double-sided metalized capacitor

Technical Field

The utility model relates to the technical field of capacitors, in particular to a double-sided metalized capacitor.

Background

The capacitor is a capacitor for short, two conductors which are close to each other are clamped with a layer of non-conductive insulating medium in the middle, so that the capacitor is formed, the main functions of the capacitor are bypass, decoupling, filtering and energy storage, the bypass capacitor is an energy storage device for providing energy for local devices, the output of the voltage stabilizer can be homogenized, the load requirement is reduced, the decoupling capacitor meets the change of current of a driving circuit, the mutual coupling interference is avoided, and the high-frequency interference impedance between a power supply and a reference ground is reduced.

The existing capacitors are roughly divided into two groups, one is a foil structure, and the other is a metallized film structure, the former has large size and long service life but no self-healing property and high cost, the latter has small size and short service life but has self-healing property and lower cost, and the capacitor of the metallized film structure is still more suitable in many times, so that a double-sided metallized capacitor needs to be provided to improve the capacitor of the existing metallized film structure.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model discloses a double-sided metalized capacitor to solve the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a two-sided metallization electric capacity, includes the electric capacity main part, the electric capacity main part includes that the positive pole adheres to membrane, negative pole and electrolysis insulating paper, the quantity of electrolysis insulating paper is two sets of and laminates respectively and adheres to the surface that membrane and negative pole adhered to the membrane at the positive pole, the positive pole adheres to the positive and negative both sides that membrane and negative pole adhered to the membrane and all coats and have metal coating.

Preferably, both ends of the capacitor main body are provided with metal pins, and the outer surface of the capacitor main body is provided with an epoxy resin protective layer.

Preferably, the metal pins comprise external pins and aluminum electrodes, the external pins are welded to the top ends of the aluminum electrodes through tin soldering, and the bottom ends of the aluminum electrodes are fixedly inserted into the capacitor main body.

Preferably, the anode adhesive film, the cathode adhesive film and the electrolytic insulating paper are wound together in a laminated manner, and the two sets of aluminum electrodes are electrically connected to the anode adhesive film and the cathode adhesive film, respectively.

Preferably, sealing end covers are installed at two ends of the capacitor main body, side edges of the sealing end covers wrap the inside of the epoxy resin protective layer, and the aluminum electrodes penetrate through the sealing end covers.

The utility model discloses a double-sided metalized capacitor, which has the following beneficial effects:

1. this two-sided metallization electric capacity, when carrying out production, through setting up the positive pole and attaching to the membrane, negative pole attaches to membrane and electrolytic insulation paper, and the quantity of electrolytic insulation paper is two sets of and laminates respectively and attaches to the surface that membrane and negative pole attached to the membrane at the positive pole, simultaneously through attaching to the positive and negative both sides that membrane and negative pole attached to the membrane and all coating have metal coating, make this electric capacity compare with traditional metallization membrane electric capacity, its capacity attenuation is less than the latter far away, in long-term use, especially in the time that alternating current harmonic content is higher, life is good at traditional metallization membrane electric capacity far away.

2. This two-sided metallized capacitor, two sets of electrodes of negative and positive all adopt built-in aluminium system electrode, and external stitch is the hard metal material, sets up the epoxy protective layer through the outside at whole electric capacity main part simultaneously, further improvement the structural strength and the physical property of this electric capacity, further improved its life.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is a schematic diagram of a capacitor body structure according to the present invention;

FIG. 4 is a schematic plan view of a capacitor body according to the present invention.

In the figure: 1. a capacitor body; 101. an anodic adhesion film; 102. a cathode attachment film; 103. electrolyzing insulating paper; 2. a metal pin; 201. externally arranging pins; 202. an aluminum electrode; 3. an epoxy resin protective layer; 4. sealing the end cap; 5. and (3) coating the metal.

Detailed Description

The embodiment of the utility model discloses a double-sided metalized capacitor, which comprises a capacitor main body 1, wherein the capacitor main body 1 comprises an anode adhesion film 101, a cathode adhesion film 102 and electrolytic insulating paper 103, the electrolytic insulating paper 103 is divided into two groups and is respectively attached to the outer surfaces of the anode adhesion film 101 and the cathode adhesion film 102, and metal coatings 5 are respectively coated on the front surface and the back surface of the anode adhesion film 101 and the back surface of the cathode adhesion film 102, so that compared with the traditional metalized film capacitor, the capacity attenuation of the capacitor is far smaller than that of the latter, and in the long-term use process, especially in the time with high alternating current harmonic content, the service life of the capacitor is far longer than that of the traditional metalized film capacitor.

Referring to the attached drawing 2, the two ends of the capacitor main body 1 are provided with metal pins 2, and the outer surface of the capacitor main body 1 is provided with an epoxy resin protective layer 3, so that the structural strength and physical properties of the capacitor are further improved, and the service life of the capacitor is further prolonged.

Referring to fig. 2, the metal pins 2 include external pins 201 and aluminum electrodes 202, the external pins 201 are soldered to the top ends of the aluminum electrodes 202, the bottom ends of the aluminum electrodes 202 are fixedly inserted into the capacitor body 1, and the external pins 201 are made of hard metal.

Referring to fig. 3-4, the anode adhesive film 101, the cathode adhesive film 102 and the electrolytic insulating paper 103 are wound together in a laminated manner, and two sets of aluminum electrodes 202 are electrically connected to the anode adhesive film 101 and the cathode adhesive film 102, respectively, while the anode adhesive film 101 and the cathode adhesive film 102 are separated by the electrolytic insulating paper 103, and the outer layer of the electrolytic insulating paper 103 protects the whole.

Referring to the attached drawings, sealing end caps 4 are mounted at two ends of a capacitor main body 1, the side edges of the sealing end caps 4 are wrapped inside an epoxy resin protective layer 3, and an aluminum electrode 202 penetrates through the sealing end caps 4 to ensure the sealing property and the waterproof property of the capacitor.

The working principle is as follows: when the double-sided metalized capacitor is produced, the anode adhesion film 101, the cathode adhesion film 102 and the electrolytic insulating paper 103 are arranged, the electrolytic insulating paper 103 is in two groups and is respectively attached to the outer surfaces of the anode adhesion film 101 and the cathode adhesion film 102, and the metal coatings 5 are coated on the front surface and the back surface of the anode adhesion film 101 and the back surface of the cathode adhesion film 102, so that compared with the traditional metalized film capacitor, the capacitor has the capacity attenuation far smaller than that of the latter, and in the long-term use process, particularly in the time with high alternating current harmonic content, the service life is far longer than that of the traditional metalized film capacitor;

and the two sets of positive and negative electrodes of this electric capacity all adopt built-in aluminium system electrode 202, and external stitch 201 is the hard metal material, through setting up epoxy protective layer 3 in the outside of whole electric capacity main part 1 simultaneously, further improved the structural strength and the physical property of this electric capacity, further improved its life.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A double-sided metalized capacitor comprises a capacitor main body (1) and is characterized in that; the capacitor body (1) comprises an anode adhesion film (101), a cathode adhesion film (102) and electrolytic insulating paper (103), wherein the electrolytic insulating paper (103) is divided into two groups and is respectively attached to the outer surfaces of the anode adhesion film (101) and the cathode adhesion film (102), and metal coatings (5) are coated on the front surface and the back surface of the anode adhesion film (101) and the back surface of the cathode adhesion film (102).

2. A double-sided metallized capacitor as claimed in claim 1, wherein: both ends of electric capacity main part (1) all are equipped with metal stitch (2), the surface of electric capacity main part (1) is equipped with epoxy protective layer (3).

3. A double-sided metallized capacitor as claimed in claim 2, wherein: the metal pins (2) comprise external pins (201) and aluminum electrodes (202), the external pins (201) are welded to the top ends of the aluminum electrodes (202) through tin soldering, and the bottom ends of the aluminum electrodes (202) are fixedly inserted into the capacitor main body (1).

4. A double-sided metallized capacitor as claimed in claim 3, wherein: the anode adhesion film (101), the cathode adhesion film (102) and the electrolytic insulating paper (103) are wound together in a laminated manner, and the two groups of aluminum electrodes (202) are respectively electrically connected with the anode adhesion film (101) and the cathode adhesion film (102).

5. The double-sided metallized capacitor of claim 4, wherein: sealing end covers (4) are installed at two ends of the capacitor main body (1), the side edges of the sealing end covers (4) are wrapped in the epoxy resin protective layers (3), and the aluminum electrodes (202) penetrate through the sealing end covers (4).