Ceramic energy storage capacitor and preparation method thereof
A technology of energy storage capacitors and ceramics, which is applied in the direction of fixed capacitor dielectrics and fixed capacitor parts, etc., can solve the problems of high environmental temperature requirements, small capacity of energy storage capacitors, and difficult heat release, etc., to achieve lower temperature requirements and reduce Small leakage current change, good thermal conductivity
Active Publication Date: 2019-04-16
GUANGZHOU AURORA TECHNOLOGIES CO LTD
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[0003] The purpose of the present invention is to provide a ceramic energy storage capacitor and its preparation method to solve the problems that the energy storage capacitor prepared by the existing method has small capacity, high requirements on the use environment temperature, complex preparation process and difficult release of heat
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] The purpose of the present invention is to provide a ceramic energy storage capacitor and its preparation method to solve the problems that the energy storage capacitor prepared by the existing method has small capacity, high requirements on the use environment temperature, complex preparation process and difficult heat release.
[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, the present ...
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Abstract
The invention discloses a ceramic energy storage capacitor and a preparation method thereof. By coating each of the two sides of a ceramic substrate with a very thin oxide dielectric film, the capacitance of the prepared ceramic energy storage capacitor can be kept basically unchanged even when the capacitor is thin. The thermal conductivity of the oxide dielectric film used in the invention is better than that of the polymer material, and the heat accumulation in the process of repeated use of the energy storage capacitor can be reduced. Meanwhile, the oxide dielectric film can adapt to higher temperature, and the temperature requirement for the use environment is lowered. The oxide dielectric film prepared by the method of the invention is compact and plays a blocking role. The problem that the leakage current of the energy storage capacitor increases gradually during the repeated use of the capacitor can be well solved. Therefore, the change in leakage current of the energy storagecapacitor during the charge-discharge cycle can be reduced, and the same peak current can be maintained in the energy release process.
Description
technical field [0001] The invention relates to the technical field of energy storage capacitors, in particular to a ceramic energy storage capacitor and a preparation method thereof. Background technique [0002] In the preparation process of the existing energy storage capacitor, the energy storage capacitor is mostly coated or coated with a layer of organic polymer material film to improve the withstand voltage and charge-discharge cycle of the energy storage capacitor. This preparation method has the following disadvantages: 1. The dielectric constant of the organic polymer film layer is small. After the energy storage capacitor is coated or coated with the film layer, the capacity is small and the energy storage density is reduced; 2. The organic polymer material film The temperature resistance of the layer is low, and there are strict requirements on the ambient temperature of the energy storage capacitor; 3. It is difficult to prepare electrodes on the energy storage ...
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IPC IPC(8): H01G4/002H01G4/08H01G4/10H01G4/12
CPCH01G4/002H01G4/08H01G4/10H01G4/12
Inventor 丁明建杨俊锋刘宇鹏陈炜豪刘福扩庄彤
Owner GUANGZHOU AURORA TECHNOLOGIES CO LTD