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A chip safety ceramic capacitor

A technology of ceramic capacitors and safety regulations, which is applied in the direction of laminated capacitors, fixed capacitor electrodes, fixed capacitor dielectrics, etc., can solve the problems of low breakdown electric field, affecting capacitor work, poor stability, etc., and achieve enhanced breakdown electric field, large current Card effect, simple structure effect

Active Publication Date: 2022-06-07
四川特锐祥科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the traditional molding process of multilayer chip ceramic capacitors has the solvent in the internal electrode slurry, which has a corrosion and dissolution effect on the ceramic green sheet. Type ceramic capacitor product short circuit
[0004] At the same time, the ceramics used in the traditional process have low breakdown electric field, poor stability, and integrated structure. The overall internal heat energy is large, forming internal losses and affecting the overall capacitor work.
[0005] Publication No. CN107251177B discloses a laminated ceramic capacitor. Ceramic layers and internal electrodes are alternately laminated in multiple layers, and the laminate is crimped and cut to obtain an intermediate of the laminated ceramic capacitor. Sintering, the capacitor formed by the above structure can only form the electrode structure arranged in parallel, and the overall structure cannot form heat dissipation, and the ceramic structure used is made by traditional technology

Method used

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Embodiment 1

[0032] A chip safety ceramic capacitor of the present invention is realized in this way. A chip safety ceramic capacitor of the present invention includes a terminal electrode 1 and an MLCC2, the terminal electrode 1 is symmetrically placed at the end of the MLCC2, and the MLCC2 has a built-in multilayer inner electrode 22. , the inner electrode 22 is connected to the end electrode 1, a hollow structure is arranged in the middle of the LLCC, the inner electrode 22 is a corrugated structure, and the ceramic 20 of the MLCC2 is prepared by a casting process;

[0033] The terminal electrode 1 has a multi-layer structure, and is sequentially composed of a copper layer 13, a soft terminal layer 12, a nickel layer 11, and a tin layer 10 from the inside to the outside. The soft terminal layer 12 and the copper layer 13 are connected by an embedded structure. The outer surface of the layer 11 is provided with irregular protrusions, the protrusion height is 0.2mm, and the tin layer 10 is...

Embodiment 2

[0043] A chip safety ceramic capacitor of the present invention is realized in this way. A chip safety ceramic capacitor of the present invention includes a terminal electrode 1 and an MLCC2, the terminal electrode 1 is symmetrically placed at the end of the MLCC2, and the MLCC2 has a built-in multilayer inner electrode 22. , the inner electrode 22 is connected to the end electrode 1, a hollow structure is arranged in the middle of the LLCC, the inner electrode 22 is a corrugated structure, and the ceramic 20 of the MLCC2 is prepared by a casting process;

[0044] The terminal electrode 1 has a multi-layer structure, and is sequentially composed of a copper layer 13, a soft terminal layer 12, a nickel layer 11, and a tin layer 10 from the inside to the outside. The soft terminal layer 12 and the copper layer 13 are connected by an embedded structure. The outer surface of the layer 11 is provided with irregular protrusions, the protrusion height is 0.5mm, and the tin layer 10 is...

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Abstract

The invention provides a chip safety ceramic capacitor, relates to a ceramic capacitor prepared by performing ceramic modification based on a KNN relaxation system, and forms a hollow ceramic capacitor in the middle, and belongs to the field of electrical components. Provides a corrugated internal electrode for high-voltage breakdown, improving the overall range, and ceramic capacitors that diffuse heat through the hollow in the middle, including terminal electrodes and MLCCs. The terminal electrodes are symmetrically placed at the end of the MLCC, and the MLCC has a built-in multi-layer The inner electrode, the inner electrode and the terminal electrode are connected, and the hollow structure is arranged horizontally in the middle of the LLCC, and the inner electrode is a corrugated structure. The ceramics of the MLCC are prepared by a tape casting process, and the synergistic effect of the KNN relaxation phase transition and the high electric field is used in the lead-free MLCC device. Successfully obtained excellent performance with a combination of large electric card effect and wide room temperature refrigeration working temperature range.

Description

technical field [0001] The invention provides a chip safety ceramic capacitor, which relates to a ceramic capacitor whose middle hollow is formed by performing ceramic modification and preparation based on a KNN relaxation system, and belongs to the field of electrical components. Background technique [0002] Multi-Layer Ceramic Capacitor MLCC (Multi-Layer Ceramic Capacitor) is composed of ceramic dielectric diaphragms with printed electrodes (internal electrodes) stacked in a dislocation manner, and a ceramic chip is formed by one-time high-temperature sintering, and then sealed at both ends of the chip. The upper metal layer (outer electrode) forms a structure similar to a monolith, so it is also called a monolithic capacitor. Multilayer chip ceramic capacitors MLCC not only have the characteristics of "blocking direct traffic", but also have the characteristics of small size, large specific capacity, long life, high reliability, and suitable for surface mounting. With t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G4/30H01G4/12H01G4/005
CPCH01G4/30H01G4/12H01G4/005
Inventor 刘世军
Owner 四川特锐祥科技股份有限公司
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