CN216980359U

CN216980359U - Multilayer plate type filter capacitor

Info

Publication number: CN216980359U
Application number: CN202220040309.3U
Authority: CN
Inventors: 林鑫; 王慧卉; 刘希
Original assignee: Hunan Guantao Electronic Technology Co ltd
Current assignee: Hunan Guantao Electronic Technology Co ltd
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-07-15
Anticipated expiration: 2032-01-10

Abstract

The utility model discloses a multilayer plate type filter capacitor, which relates to the technical field of filter capacitors and comprises a ceramic dielectric layer, a bottom dielectric protection layer and an upper dielectric protection layer, wherein the bottom dielectric protection layer is arranged above the ceramic dielectric layer; bottom dielectric protection layer includes first protection shield and second protection shield, first protection shield and second protection shield stack set up, two protection shields stack, the thickness of protective layer has been strengthened, circular breach set up be convenient for make the electric current gyration in circular breach department, prevent that the electric current from puncturing ceramic dielectric layer, the protective capacitor, through the stack protection, increase thickness has strengthened the insulating effect of condenser promptly, and the center of protective layer is electric conductivity strong, the edge is the insulating part, the insulating properties and the dielectric strength of multilayer board-like pottery punching capacitor chip for the filter connector have been improved.

Description

Multilayer plate type filter capacitor

Technical Field

The utility model relates to the technical field of filter capacitors, in particular to a multilayer plate type filter capacitor.

Background

The filter capacitor is an energy storage device, is usually installed at two ends of a rectifying circuit and used for reducing alternating current ripple coefficients so as to improve high-efficiency smooth direct current output, and is installed in a ceramic feedthrough capacitor chip inside an electric connector, so that the common electric connector has an additional filtering function, and the multilayer plate type capacitor is simpler to assemble and has stronger breakdown resistance.

The existing filter capacitor has poor protection to the medium, and only one layer of protection to the medium is arranged, so that the voltage breakdown resistance of the capacitor is greatly reduced, and the insulation effect of the capacitor is poor.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a multilayer plate type filter capacitor, which can effectively solve the problems that in the background art, the voltage breakdown strength of the capacitor is greatly reduced and the insulation effect of the capacitor is poor due to the fact that the dielectric protection is not good enough and only one layer of dielectric protection is arranged.

In order to achieve the purpose, the utility model adopts the technical scheme that: a multilayer plate type filter capacitor comprises a ceramic dielectric layer, a bottom dielectric protection layer arranged above the ceramic dielectric layer and an upper dielectric protection layer arranged below the ceramic dielectric layer;

the bottom medium protection layer comprises a first protection plate and a second protection plate, the first protection plate and the second protection plate are arranged in a stacked mode, the first protection plate and the second protection plate are of cuboid structures, each corner adopts circular arc transition, and a plurality of circular notches are formed in the first protection plate;

the two protection plates are overlapped, the thickness of the protection layers is increased, the circular notches are convenient to enable current to rotate at the circular notches, the current is prevented from puncturing the ceramic dielectric layer, and the capacitor is protected.

The upper medium protection layer comprises a third protection plate and a fourth protection plate, the third protection plate and the fourth protection plate are arranged in a stacked mode, and a plurality of triangular notches are formed in the fourth protection plate;

in the same way, the insulation effect of the capacitor is enhanced by increasing the thickness through the superposition protection, the center of the protective layer has strong conductivity, and the edge of the protective layer is an insulation part.

Preferably, the third protection board and the fourth protection board are cuboid structures with the same size, and corners are in arc transition.

Preferably, the ceramic dielectric layer comprises a first dielectric layer and a second dielectric layer, and the first dielectric layer and the second dielectric layer are plate bodies with the same size and are matched with the first protection plate, the second protection plate, the third protection plate and the fourth protection plate in size;

the ceramic dielectric layer is protected by each protective layer and surrounds the ceramic dielectric layer at the center.

Preferably, a plurality of conduits are arranged between the first dielectric layer and the second dielectric layer, a conducting wire is arranged in each conduit, the conducting wire is connected with the first dielectric layer and the second dielectric layer, and the first dielectric layer and the second dielectric layer are stably matched with each other though not directly connected through the plurality of conduits and the conducting wires.

Preferably, a metal outer electrode is arranged between the second protective plate and the ceramic dielectric layer, and the metal outer electrode is of a cylindrical structure.

Preferably, a metal inner electrode is arranged between the fourth protective plate and the ceramic dielectric layer, and the metal inner electrode is connected with the ceramic dielectric layer through a conduit.

Preferably, the first protection plate and the third protection plate are provided with connector lugs at the outer sides.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the two protection plates are overlapped, so that the thickness of the protection layer is enhanced, the arrangement of the circular notch is convenient for enabling current to rotate at the circular notch, the current is prevented from puncturing the ceramic dielectric layer, the capacitor is protected, the insulation effect of the capacitor is enhanced by increasing the thickness through overlapping protection, the center of the protection layer is high in conductivity, the edge of the protection layer is an insulation part, and the insulation performance and the dielectric strength of the multilayer plate type ceramic puncturing capacitor chip for the filter connector are improved.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a multilayer plate filter capacitor according to the present invention;

FIG. 2 is a schematic diagram of a front view structure of a multilayer plate filter capacitor according to the present invention;

fig. 3 is a schematic isometric view of a multilayer plate filter capacitor according to the present invention;

FIG. 4 is a schematic cross-sectional view taken at A-A of FIG. 2 according to the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 1 according to the present invention.

In the figure: 110. a ceramic dielectric layer; 120. a bottom dielectric protective layer; 130. an upper dielectric protective layer; 140. a first dielectric layer; 150. a second dielectric layer; 210. a first protective plate; 220. a second protective plate; 230. a circular notch; 310. a third protective plate; 320. a fourth protective plate; 330. a triangular notch; 410. a conduit; 420. a wire; 510. a metal outer electrode; 520. a metal inner electrode; 530. a connector lug.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained by combining the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, the present invention is a multilayer plate filter capacitor, including a ceramic dielectric layer 110, a bottom dielectric protection layer 120 disposed above the ceramic dielectric layer 110, and an upper dielectric protection layer 130 disposed below the ceramic dielectric layer 110;

the bottom dielectric protection layer 120 comprises a first protection plate 210 and a second protection plate 220, the first protection plate 210 and the second protection plate 220 are arranged in a stacked mode, the first protection plate 210 and the second protection plate 220 are both of cuboid structures, corners of the first protection plate 210 and corners of the second protection plate 220 are in arc transition, and a plurality of circular notches 230 are formed in the first protection plate 210;

the two protective plates are overlapped, so that the thickness of the protective layers is increased, the circular notch 230 is convenient for enabling current to rotate around the circular notch 230, the current is prevented from breaking down the ceramic dielectric layer 110, and the capacitor is protected.

The upper dielectric protection layer 130 comprises a third protection plate 310 and a fourth protection plate 320, the third protection plate 310 and the fourth protection plate 320 are stacked, and a plurality of triangular notches 330 are formed in the fourth protection plate 320;

The third protection plate 310 and the fourth protection plate 320 are rectangular structures with the same size, and the corners are in arc transition.

The ceramic dielectric layer 110 includes a first dielectric layer 140 and a second dielectric layer 150, and the first dielectric layer 140 and the second dielectric layer 150 are plate bodies with the same size and are adapted to the first protection plate 210, the second protection plate 220, the third protection plate 310 and the fourth protection plate 320;

the ceramic dielectric layer 110 is protected by each protective layer, and surrounds the protective layer at the center.

A plurality of conduits 410 are arranged between the first dielectric layer 140 and the second dielectric layer 150, a conducting wire 420 is arranged in the conduit 410, the conducting wire 420 is connected with the first dielectric layer 140 and the second dielectric layer 150, and the plurality of conduits 410 and the conducting wire 420 are connected, so that the first dielectric layer 140 and the second dielectric layer 150 are stably matched with each other although not directly connected.

A metal outer electrode 510 is disposed between the second protective plate 220 and the ceramic dielectric layer 110, and the metal outer electrode 510 is a cylinder structure.

A metal inner electrode 520 is disposed between the fourth protective plate 320 and the ceramic dielectric layer 110, and the metal inner electrode 520 is connected to the ceramic dielectric layer 110 through a guide tube 410.

The first protection plate 210 and the third protection plate 310 are provided with connector lugs 530 at the outer sides thereof.

The working principle of the utility model is as follows: the two protective plates are overlapped, so that the thickness of the protective layers is increased, the circular notch 230 is convenient for enabling current to rotate around the circular notch 230, the ceramic dielectric layer 110 is prevented from being broken down by the current, the capacitor is protected, the insulating effect of the capacitor is enhanced by increasing the thickness through overlapping protection, the center of each protective layer is high in conductivity, the edge of each protective layer is an insulating part, the insulating property and the dielectric strength of the multilayer plate type ceramic feedthrough capacitor chip for the filter connector are improved, and the ceramic dielectric layer 110 is protected by each protective layer and surrounds the center; the capacitor is minimized and provides higher capacitance due to rapid deterioration of loss characteristics caused by reduction of the gap between the electrodes, i.e., the thickness of the dielectric film. In particular, even when the capacitor is embedded in a multilayer wiring board such as a printed circuit board, the floating electrode can be formed only by the layer growth method used in the manufacture of the capacitor without requiring complicated modification or addition of a sandwich circuit, thereby advantageously producing a high-capacitance capacitor.

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 multilayer plate filter capacitor comprising a ceramic dielectric layer (110), characterized in that: a bottom dielectric protection layer (120) arranged above the ceramic dielectric layer (110) and an upper dielectric protection layer (130) arranged below the ceramic dielectric layer (110);

the bottom medium protection layer (120) comprises a first protection plate (210) and a second protection plate (220), the first protection plate (210) and the second protection plate (220) are arranged in a stacked mode, the first protection plate (210) and the second protection plate (220) are both of cuboid structures, corners of the first protection plate (210) are in arc transition, and a plurality of circular notches (230) are formed in the first protection plate (210);

the upper dielectric protection layer (130) comprises a third protection plate (310) and a fourth protection plate (320), the third protection plate (310) and the fourth protection plate (320) are arranged in an overlapping mode, and a plurality of triangular notches (330) are formed in the fourth protection plate (320).

2. A multilayer plate filter capacitor according to claim 1, characterized in that: the third protection plate (310) and the fourth protection plate (320) are of cuboid structures with the same size, and corners are in arc transition.

3. A multilayer plate filter capacitor according to claim 1, wherein: the ceramic dielectric layer (110) comprises a first dielectric layer (140) and a second dielectric layer (150), wherein the first dielectric layer (140) and the second dielectric layer (150) are plate bodies with the same size, and the size of the first dielectric layer is matched with that of the first protection plate (210), the second protection plate (220), the third protection plate (310) and the fourth protection plate (320).

4. A multilayer plate filter capacitor according to claim 3, wherein: a plurality of guide pipes (410) are arranged between the first dielectric layer (140) and the second dielectric layer (150), conducting wires (420) are arranged inside the guide pipes (410), and the conducting wires (420) are connected with the first dielectric layer (140) and the second dielectric layer (150).

5. A multilayer plate filter capacitor according to claim 4, wherein: a metal outer electrode (510) is arranged between the second protective plate (220) and the ceramic dielectric layer (110), and the metal outer electrode (510) is of a cylindrical structure.

6. A multilayer plate filter capacitor according to claim 1, wherein: a metal inner electrode (520) is arranged between the fourth protective plate (320) and the ceramic dielectric layer (110), and the metal inner electrode (520) is connected with the ceramic dielectric layer (110) through a guide pipe (410).

7. A multilayer plate filter capacitor according to claim 1, wherein: the outer sides of the first protection plate (210) and the third protection plate (310) are provided with connector lugs (530).