CN206179682U - High -voltage ceramic capacitor with good heat dispersion - Google Patents
High -voltage ceramic capacitor with good heat dispersion Download PDFInfo
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- CN206179682U CN206179682U CN201621170035.0U CN201621170035U CN206179682U CN 206179682 U CN206179682 U CN 206179682U CN 201621170035 U CN201621170035 U CN 201621170035U CN 206179682 U CN206179682 U CN 206179682U
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- ceramic capacitor
- capacitor
- porcelain core
- heat dispersion
- silver electrode
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Abstract
The utility model belongs to the high voltage capacitor field especially relates to a high -voltage ceramic capacitor with good heat dispersion, comprises ceramic capacitor core, oxidation aluminum cooling fin, epoxy encapsulated layer and metal electrode. The ceramic capacitor core adopts the sintering ferroelectric ceramic or the microcrystalline glass that have high dielectric constant to prepare, and the silver electrode is fired on the surface from top to bottom, and oxidation aluminum cooling fin bonds on the upper and lower silver electrode surface of ceramic capacitor core, and metal electrode passes oxidation aluminum cooling fin and is in the same place with porcelain core's upper and lower silver electrode face bonding, wholly adopts epoxy to seal. This high -voltage ceramic capacitor has characteristics small, that heat dispersion is good, can be applied to the field that power equipment, pulse power equipment etc. Need high power electric capacity.
Description
Technical field
This utility model belongs to high voltage ceramic capacitor field, more particularly to a kind of pottery of the high pressure with excellent heat dispersion performance
Porcelain condenser.
Background technology
High-voltage capacitor is widely used in power equipment, pulse power, height as the basic high-pressure electronic element of a class
The fields such as frequency voltage multiplying rectifier, in the market conventional high-pressure electric capacity mainly have two big class：One class is polymer thin film capacitor, its
Condenser dielectric is used as by varnished insulation oil using plastic sheetings such as polypropylene, polystyrene or Merlon, insulating oil
Using the hole not only eliminated between thin film, dielectric strength is improve, while so that such capacitor has good radiating
Performance, is widely used in high voltage field, especially power system.However, the presence of oil based media is caused in capacitor
Device increased the risk caught fire and explode while failure, become a big hidden danger of such capacitor.Compare thin-film capacitor
For device, Ceramic high-pressure capacitor is due to advantages such as size is little, non-oil ultra high vacuum system, life-span lengths, meeting high pressure equipment non-oil ultra high vacuum system, height
The growth requirement of reliability.At present conventional high-tension ceramic capacitor majority carries out solid encapsulation to improve porcelain using epoxy resin
The edge flashing voltage of core.Epoxy resin is the organic compound that a class has high insulation resistance, due to its excellent bonding it is strong
Degree and dielectric properties, that what is extensively sent out is applied to electric insulating medium.Meanwhile, it is also good heat insulator, thermal conductivity one
As be less than 1W/mK.The low thermal conductivity of epoxy resin seriously limits the conduction of heat of high voltage ceramic capacitor, particularly with Gao Gong
The high voltage ceramic capacitor of rate, under conditions of being usually operated at high voltage, high current charge-discharge, produces substantial amounts of heat, it is difficult to
Conducted by epoxy resin so that capacitor porcelain core temperature is constantly raised, and is ultimately resulted in and is punctured.For current higfh-tension ceramics
The technical problem that capacitor is present, how on the premise of insulation is ensured, improves the heat-sinking capability of high voltage ceramic capacitor very
It is important, particularly with high power ceramic capacitor.
Utility model content
This utility model its object is to offer one for the technical problem of current high voltage ceramic capacitor heat dispersion difference
Plant the high voltage ceramic capacitor with excellent heat dispersion performance.
For achieving the above object, this utility model is employed the following technical solutions：
A kind of high voltage ceramic capacitor with excellent heat dispersion performance, by capacitor porcelain core, oxidation aluminium radiator fin, asphalt mixtures modified by epoxy resin
Fat encapsulated layer and metal electrode are constituted, and the capacitor porcelain core upper and lower surface fires silver electrode, and oxidation aluminium radiator fin is bonded in
The silver electrode surface up and down of capacitor porcelain core, metal electrode is welded on through oxidation aluminium radiator fin with the face of silver electrode up and down of porcelain core
Together, it is overall to be encapsulated using epoxy resin.
Described capacitor porcelain core is sintering ferroelectric ceramics or devitrified glass with high-k.
Circular hole is left at described oxidation aluminium radiator fin center, and aperture is identical with metal end electrodes diameter, upper and lower metal end electricity
Pole welds together through oxidation aluminium radiator fin center hole with porcelain core silver electrode.
The side of capacitor porcelain core and oxidation aluminium radiator fin is packaged using epoxy resin, prevents edge flashing.
The utility model has the advantage of：
This utility model is bonded in the upper and lower surface of capacitor porcelain core using oxidation aluminium radiator fin, because aluminium oxide has height
Thermal conductivity (~30W/mK), it is higher than epoxy resin tens times, effectively the heat that porcelain core is produced can be conducted as early as possible,
The radiating effect of high voltage ceramic capacitor is greatly improved, the service life of capacitor is improve, simultaneous oxidation aluminum also has height
Disruptive field intensity, it is ensured that the dielectric strength of porcelain core upper and lower surface.In addition, being packaged to porcelain core side using epoxy resin, carry
The high surface breakdown voltage of capacitor porcelain core.The utility model can be applicable to power system, high voltage pulse power etc. needs height
The field of power capacity.
Description of the drawings
Fig. 1 is a kind of sectional view of high voltage ceramic capacitor with excellent heat dispersion performance of the present utility model.
Specific embodiment
This utility model provides a kind of high voltage ceramic capacitor with excellent heat dispersion performance, below by being embodied as
Mode is described further to this utility model.
As shown in figure 1, high voltage ceramic capacitor of the present utility model, including capacitor porcelain core 1, silver electrode 2, aluminium oxide dissipate
Backing 3, epoxy resin enclosed layer 5 and metal end electrodes 4.
Capacitor porcelain core 1 is sintering ferroelectric ceramics or devitrified glass with high-k.
Oxidation aluminium radiator fin 3 is bonded in the silver electrode surface up and down of porcelain core, oxidation aluminium radiator fin center using conducting resinl
Leave circular hole, aperture is identical with the diameter of metal end electrodes 4, upper and lower metal end electrodes 4 through oxidation aluminium radiator fin center hole with
Porcelain core silver electrode 2 welds together.
Solid encapsulation is carried out using epoxy resin 5 to whole porcelain core side, high dielectric strength is realized.
The 50kV-8nF high voltage ceramic capacitors prepared using the structure, have carried out the examination of charge and discharge electric life and surface temperature
Degree monitoring.In 47kV running voltages, 2.4 μ s pulsewidths, 110A discharge currents, under the conditions of the operating frequency of 340Hz, charge and discharge is realized
Electric life is more than 10,000,000 times, capacitor surface temperature is increased to~45 DEG C it is stable.
High voltage ceramic capacitor of the present utility model is bonded in porcelain core surface using oxidation aluminium radiator fin, is ensureing that insulation is strong
While spending, the radiating effect of high voltage ceramic capacitor is effectively improved, improve the service life of capacitor.
Claims (4)
1. a kind of high voltage ceramic capacitor with excellent heat dispersion performance, by capacitor porcelain core, aoxidizes aluminium radiator fin, epoxy resin
Encapsulated layer and metal electrode are constituted, it is characterised in that the capacitor porcelain core upper and lower surface fires silver electrode, aluminium oxide radiating
Piece is bonded in the silver electrode surface up and down of capacitor porcelain core, and metal electrode is through oxidation aluminium radiator fin and the silver electrode up and down of porcelain core
Face welds together, overall to be encapsulated using epoxy resin.
2. a kind of high voltage ceramic capacitor with excellent heat dispersion performance according to claim 1, it is characterised in that described
Capacitor porcelain core be sintering ferroelectric ceramics or devitrified glass with high-k.
3. a kind of high voltage ceramic capacitor with excellent heat dispersion performance according to claim 1, it is characterised in that described
Oxidation aluminium radiator fin center leave circular hole, aperture is identical with metal end electrodes diameter, upper and lower metal end electrodes pass through aluminium oxide
Fin center hole welds together with porcelain core silver electrode.
4. a kind of high voltage ceramic capacitor with excellent heat dispersion performance according to claim 1, it is characterised in that adopt
Epoxy resin is packaged to the side of capacitor porcelain core and oxidation aluminium radiator fin, prevents edge flashing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621170035.0U CN206179682U (en) | 2016-11-02 | 2016-11-02 | High -voltage ceramic capacitor with good heat dispersion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621170035.0U CN206179682U (en) | 2016-11-02 | 2016-11-02 | High -voltage ceramic capacitor with good heat dispersion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206179682U true CN206179682U (en) | 2017-05-17 |
Family
ID=58679851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621170035.0U Active CN206179682U (en) | 2016-11-02 | 2016-11-02 | High -voltage ceramic capacitor with good heat dispersion |
Country Status (1)
| Country | Link |
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| CN (1) | CN206179682U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189433A (en) * | 2021-05-28 | 2021-07-30 | 南京邮电大学 | Novel ceramic energy storage performance detection device with self-energy supply function |
-
2016
- 2016-11-02 CN CN201621170035.0U patent/CN206179682U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189433A (en) * | 2021-05-28 | 2021-07-30 | 南京邮电大学 | Novel ceramic energy storage performance detection device with self-energy supply function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191008 Address after: 101407 Beijing city Huairou District Yanqi Economic Development Zone Branch Hing Street No. 11 Patentee after: Research Institute of engineering and Technology Co., Ltd. Address before: 100088 Beijing city Xicheng District Xinjiekou Avenue No. 2 Patentee before: General Research Institute for Nonferrous Metals |