CN210223792U - Electrolytic capacitor cover plate - Google Patents
Electrolytic capacitor cover plate Download PDFInfo
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- CN210223792U CN210223792U CN201920976382.XU CN201920976382U CN210223792U CN 210223792 U CN210223792 U CN 210223792U CN 201920976382 U CN201920976382 U CN 201920976382U CN 210223792 U CN210223792 U CN 210223792U
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- layer
- cover plate
- electrolytic capacitor
- apron
- capacitor cover
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Abstract
The utility model discloses an electrolytic capacitor apron, including apron skin, apron middle level and apron inlayer, the apron skin is the rubber layer, the apron middle level is the metal level, the apron inlayer is the resin sheet layer, the rubber layer the metal level with the resin sheet layer is according to the preface range upon range of and through rivet connection. The beneficial effects of the utility model are that use rubber layer, metal level and resin sheet layer to range upon range of according to the preface and pass through rivet connection for improve electrolytic capacitor's gas tightness and thermal diffusivity.
Description
Technical Field
The utility model relates to a basic electronic component field especially relates to an electrolytic capacitor apron.
Background
The existing cover plate special for the electrolytic capacitor is divided into two types, one type is an SNAP-1N (oxhorn) type cover plate, the cover plate is of a two-layer structure, a phenolic resin plate is arranged at the lower layer and is in contact with a capacitor core, the lower layer is formed by mixing and pressing phenolic resin and paper, and the support effect is mainly provided. The existing electrolytic capacitor cover plate also comprises an SCREW (bolt type) cover plate, the structure of which is mainly a phenolic resin plate, and the difference of the SCREW cover plate and the SNAP-1N cover plate is that the plate is formed by the phenolic resin through die casting. The thickness of the SCREW cover plate is thicker than that of the SNAP-1N cover plate because the SCREW product is mainly a product with the diameter of more than 42mm and has higher requirement on the strength of the cover plate.
However, the existing cover plate of the electrolytic capacitor has insufficient air tightness and heat dissipation, the insufficient air tightness can cause the electrolyte to leak, the insufficient heat dissipation increases the leakage current of the capacitor if overvoltage occurs in the using process, the heat is rapidly generated in a short time, the temperature is rapidly increased, the electrolyte is gasified at high temperature to cause the pressure inside the capacitor to increase, and when the pressure exceeds the bearing pressure of the aluminum shell of the electrolytic capacitor, the electrolytic capacitor can explode.
Disclosure of Invention
The utility model aims at overcoming the defects, and providing an electrolytic capacitor cover plate with better air tightness and heat dissipation.
The purpose of the utility model is realized through the following technical scheme: an electrolytic capacitor cover plate characterized in that: the rubber layer, the metal layer and the resin plate layer are sequentially stacked and connected through rivets.
The utility model discloses a further improvement lies in: the rubber layer is made of butyl rubber.
The utility model discloses a further improvement lies in: the rubber layer is made of ethylene propylene diene monomer.
The utility model discloses a further improvement lies in: the metal layer is made of aluminum, iron, silver, gold or tin.
The utility model discloses a further improvement lies in: the resin plate layer is a phenolic resin plate.
The utility model discloses a further improvement lies in: the resin plate layer is a bakelite plate.
The utility model has the advantages that: the rubber layer, the metal layer and the resin plate layer are sequentially stacked and connected through the rivet, so that the air tightness and the heat dissipation performance of the capacitor can be improved.
Drawings
FIG. 1 is a schematic sectional view of an electrolytic capacitor cover plate according to the present invention.
Fig. 2 is a partially enlarged schematic view of fig. 1.
Description of reference numerals: 1-cover plate; 10-a rubber layer; 20-a metal layer; 30-a resin ply layer; 40-rivets; 2-aluminum shell.
Detailed Description
The present invention will be further described with reference to the following description and embodiments.
As shown in fig. 1 and 2, the present invention provides an electrolytic capacitor cover plate 1, which comprises a cover plate outer layer, a cover plate middle layer and a cover plate inner layer. The outer layer of the cover plate is a rubber layer 10, the middle layer of the cover plate is a metal layer 20, the inner layer of the cover plate is a resin plate layer 30, and the rubber layer 10, the metal layer 20 and the resin plate layer 30 are sequentially stacked and connected through a rivet 40.
The utility model provides an electrolytic capacitor apron 1, outermost rubber layer 10 material adopt butyl rubber, EPT rubber or butyl rubber and EPT rubber's mixed rubber (rubber weight content is 35% -40%). The rubbers are widely used in capacitor products, and have stable long-term service performance in electrolytic capacitors by using different materials or mixtures according to the cost. The sealing surface between the cap plate 1 and the aluminum housing 2 is located between the rubber layer 10 and the aluminum housing indent, whereby the physical properties of the rubber provide good air tightness. The metal layer 20 of the cover plate middle layer is made of a metal material having good thermal conductivity, such as aluminum, iron, silver, gold or tin, thereby providing good heat dissipation and preventing the temperature and pressure inside the electrolytic capacitor from rapidly rising. The resin board layer 30 of the cover inner layer is made of a phenolic resin board or an bakelite board, so that sufficient structural strength is provided, and the phenolic resin board or the bakelite board has the characteristics of no water absorption, no conductivity, high temperature resistance, high strength, stability and high reliability when being used in an electrolytic capacitor for a long time.
The beneficial effects of the utility model are that use rubber layer 10, metal level 20 and resin sheet layer 30 to range upon range of in proper order and be connected through rivet 40, form a composite construction's electrolytic capacitor apron 1, effectively improve the gas tightness and the thermal diffusivity of condenser, and manufacturing process is simple relatively.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (6)
1. An electrolytic capacitor cover plate characterized in that: the rubber layer, the metal layer and the resin plate layer are sequentially stacked and connected through rivets.
2. The electrolytic capacitor cover plate of claim 1, characterized in that: the rubber layer is made of butyl rubber.
3. The electrolytic capacitor cover plate of claim 1, characterized in that: the rubber layer is made of ethylene propylene diene monomer.
4. The electrolytic capacitor cover plate of claim 1, characterized in that: the metal layer is made of aluminum, iron, silver, gold or tin.
5. The electrolytic capacitor cover plate of claim 1, characterized in that: the resin plate layer is a phenolic resin plate.
6. The electrolytic capacitor cover plate of claim 1, characterized in that: the resin plate layer is a bakelite plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920976382.XU CN210223792U (en) | 2019-06-26 | 2019-06-26 | Electrolytic capacitor cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920976382.XU CN210223792U (en) | 2019-06-26 | 2019-06-26 | Electrolytic capacitor cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210223792U true CN210223792U (en) | 2020-03-31 |
Family
ID=69934326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920976382.XU Active CN210223792U (en) | 2019-06-26 | 2019-06-26 | Electrolytic capacitor cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210223792U (en) |
-
2019
- 2019-06-26 CN CN201920976382.XU patent/CN210223792U/en active Active
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