CN2768169Y - Ceramic capacitor with multilayer piece type structure for middle, high voltage - Google Patents
Ceramic capacitor with multilayer piece type structure for middle, high voltage Download PDFInfo
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- CN2768169Y CN2768169Y CN 200420121008 CN200420121008U CN2768169Y CN 2768169 Y CN2768169 Y CN 2768169Y CN 200420121008 CN200420121008 CN 200420121008 CN 200420121008 U CN200420121008 U CN 200420121008U CN 2768169 Y CN2768169 Y CN 2768169Y
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Abstract
The utility model discloses a ceramic capacitor with a multilayer piece type structure for middle and high voltage, which relates to the technical field of a ceramic capacitor. The utility model comprises a plurality of dielectric layers and external electrodes on both ends, wherein the dielectric layers made of ceramic material are provided with three types of internal electrodes; the shape of each internal electrode one of the first type dielectric layer is in the two to N rectangle shape, the internal electrodes are arranged at intervals, and the outer edges of the internal electrodes one on both sides are respectively connected with the external electrodes on both ends; the shape of each internal electrode two of the second type dielectric layer is in the 2 to (2N-2) circular quadrangle shape. The shape of each internal electrode three of third type dielectric layer is in the 1 to (N-1) rectangle shape and the internal electrodes three are arranged at intervals. The N is a natural number which is greater than 2, and the three types of dielectric layers are overlapped. Compared with the prior art, the utility model can reduce the breakage probability caused by the distortion of an edge electric field greatly so as to improve the intensity of resisting the high voltage breakage.
Description
Technical field
The utility model relates to the ceramic capacitor technical field, particularly is applicable to the ceramic capacitor of the monolithic multilayer structure of the high voltage appearance of rated voltage more than direct current 250V.
Background technology
Making the high-voltage capacitor technical field, two important techniques indexs must consider, the one, and the size of capacitor, the 2nd, the anti-electric breakdown strength of capacitor.Though can produce very undersized capacitor now, under the condition that does not increase overall dimension, the anti-high-voltage breakdown intensity of wanting to improve them is but very difficult.The structure of the ceramic capacitor of mesohigh monolithic multilayer structure commonly used adopts ceramic material to make in the prior art, with the severals multi-disc dielectric layers and the two ends external electrode composition of electrode form in two types.Wherein the interior electrode of a class dielectric layer is two little rectangles, interval Boulez and the outward flange of electrode one in each is connected with the two ends external electrode respectively, and it is corresponding with the printing position of two little rectangles of interior electrode one that the interior electrode two of two class dielectric layers is a large rectangle.Several multi-disc dielectric layers of above-mentioned two classes are superposeed successively and form whole ceramic capacitor, as shown in Figure 1.The fringe field distribution schematic diagram of the ceramic capacitor of this monolithic multilayer structure, as shown in Figure 2.Because the distortion of the fringe field in each layer between the electrode is so the shortcoming of this type of ceramic condenser in application is that anti-electric breakdown strength is not ideal enough, can not satisfy the high speed development of electronic technology field.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the purpose of this utility model provides a kind of ceramic capacitor that is used for the monolithic multilayer structure of high voltage appearance, it can reduce the chance of breakdown that the fringe field distortion causes significantly, significantly improves anti-high-voltage breakdown intensity.
In order to reach above-mentioned goal of the invention, the technical solution of the utility model realizes as follows:
The ceramic capacitor that is used for the mesohigh monolithic multilayer structure, its design feature be, it comprise make with ceramic material, with the several multi-disc dielectric layers and the two ends external electrode of electrode form in three types.Wherein the interior electrode one of a class dielectric layer is shaped as two to N rectangles, interval Boulez and the outward flange of the interior electrode one that is arranged in dual-side is connected with the two ends external electrode respectively, being shaped as of the interior electrode two of two class dielectric layers two to two be multiply by N and subtracted two ring type quadrangles, and being shaped as of the interior electrode three of three class dielectric layers one to N subtracts a rectangle, Boulez at interval.Wherein N is the natural number greater than two, and above-mentioned three classes are counted the multi-disc dielectric layer and superposeed successively.
In above-mentioned ceramic capacitor, the corner of described interior electrode one, interior electrode two and interior electrode three is fillet or arc shape.
The utility model has been owing to adopted above-mentioned structure, adopts several multi-disc dielectric layers and two ends external electrode with electrode form in three types.Wherein the interior electrode one of a class dielectric layer is two to N rectangles, and the interior electrode two of two class dielectric layers is two to two to multiply by N and subtract two ring type quadrangles, and the interior electrode three of three class dielectric layers is one to N to subtract a rectangle, and above-mentioned three classes are counted the multi-disc dielectric layer and superposeed successively.Be equivalent on any circuit between the external electrode of two ends, have two to multiply by N and subtract two plate condensers and connect, greatly the anti-high-voltage breakdown intensity of raising of degree in the mode of series connection.Multiply by N two to two subtracts under the effect of the dielectric layer of electrode in two ring type quadrangles, significantly reduced because the chance of breakdown that the fringe field distortion is caused, the power line of corresponding part is perpendicular to electrode printing surface in each or each medium aspect, and makes it homogenizing.In addition, the entity area of electrode is very little in the ring type quadrangle, and the area that directly joins of ceramic dielectric is not subjected to very big influence between each dielectric layer, does not therefore hinder the combination between each dielectric layer, the problem that each dielectric layer breaks away from mutually in the time of can not appearing at sintering.Compare with prior art, the utility model can reduce the chance of breakdown that the fringe field distortion causes significantly, significantly improves anti-high-voltage breakdown intensity.
Below in conjunction with accompanying drawing and concrete execution mode the utility model is described further.
Description of drawings
Fig. 1 is the agent structure schematic diagram of prior art ceramic capacitor;
Fig. 2 is the fringe field distribution schematic diagram of prior art ceramic capacitor;
Fig. 3 is an agent structure schematic diagram of the present utility model;
Fig. 4 is a structural profile schematic diagram of the present utility model;
Fig. 5 is a fringe field distribution schematic diagram of the present utility model.
Embodiment
Referring to Fig. 3 and Fig. 4, the utility model ceramic capacitor comprise make with ceramic material, with the several multi-disc dielectric layers and the two ends external electrode of electrode form in three types.Wherein the interior electrode 1 of a class dielectric layer 1 is shaped as two to N rectangles, interval Boulez and the outward flange of the interior electrode 1 that is arranged in dual-side is connected with the two ends external electrode respectively, being shaped as of the interior electrode 24 of two class dielectric layers 3 two to two be multiply by N and subtracted two ring type quadrangles, and being shaped as of the interior electrode 36 of three class dielectric layers 5 one to N subtracts a rectangle, Boulez at interval.Wherein N is the natural number greater than two, and above-mentioned three classes are counted the multi-disc dielectric layer and superposeed successively.The corner of interior electrode 1, interior electrode 24 and interior electrode 36 is fillet or arc shape.
The utility model in use, by test experience as can be known, its fringe field distortion can overcome substantially.The power line of the edge appropriate section of electrode is perpendicular in each between the electrode printing surface, as shown in Figure 5 in each dielectric layer.Therefore, the utility model has improved anti-electric breakdown strength greatly.
Claims (2)
1, the ceramic capacitor that is used for the monolithic multilayer structure of high voltage appearance, it is characterized in that, it comprises makes with ceramic material, several multi-disc dielectric layers and two ends external electrode with electrode form in three types, wherein the interior electrode one (2) of a class dielectric layer (1) is shaped as two to N rectangles, the interval Boulez also is connected the outward flange of the interior electrode one (2) that is arranged in dual-side respectively with the two ends external electrode, being shaped as of the interior electrode two (4) of two class dielectric layers (3) two to two be multiply by N and subtracted two ring type quadrangles, being shaped as of the interior electrode three (6) of three class dielectric layers (5) one to N subtracts a rectangle, the interval Boulez, wherein N is the natural number greater than two, and above-mentioned three classes are counted the multi-disc dielectric layer and superposeed successively.
According to the described ceramic capacitor of claim 1, it is characterized in that 2, the corner of described interior electrode one (2), interior electrode two (4) and interior electrode three (6) is fillet or arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420121008 CN2768169Y (en) | 2004-12-29 | 2004-12-29 | Ceramic capacitor with multilayer piece type structure for middle, high voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420121008 CN2768169Y (en) | 2004-12-29 | 2004-12-29 | Ceramic capacitor with multilayer piece type structure for middle, high voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2768169Y true CN2768169Y (en) | 2006-03-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420121008 Expired - Fee Related CN2768169Y (en) | 2004-12-29 | 2004-12-29 | Ceramic capacitor with multilayer piece type structure for middle, high voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2768169Y (en) |
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2004
- 2004-12-29 CN CN 200420121008 patent/CN2768169Y/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 | ||
| C56 | Change in the name or address of the patentee |
Owner name: TONGFANG CO., LTD. Free format text: FORMER NAME OR ADDRESS: TSINGHUA TONGFANG CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100083 A, block 2907, Tongfang science and Technology Plaza, Beijing Patentee after: Tongfang Co., Ltd. Address before: 100083 A, block 2907, Tongfang science and Technology Plaza, Beijing Patentee before: Qinghua Tongfang Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060329 Termination date: 20101229 |