CN205303190U - Interior string of membrane DC capacitor - Google Patents
Interior string of membrane DC capacitor Download PDFInfo
- Publication number
- CN205303190U CN205303190U CN201520699825.7U CN201520699825U CN205303190U CN 205303190 U CN205303190 U CN 205303190U CN 201520699825 U CN201520699825 U CN 201520699825U CN 205303190 U CN205303190 U CN 205303190U
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- electric capacity
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- core group
- capacitor
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Abstract
The utility model relates to an interior string of membrane DC capacitor, including the shell housing case upper portion is provided with the support housing case's lower part is provided with the location and covers be equipped with extraction electrode on the support housing case in be equipped with electric capacity core group housing case in still be equipped with lug connection electric capacity core group and extraction electrode's internal connection copper strips be equipped with the solid stopping in the gap between housing case and the electric capacity core group, electric capacity core group by parallelly connected the forming of cores of cluster thin film compositions in a plurality of. Because the utility model discloses a cluster structure in DC capacitor adopts makes its through -flow route short, adopt parallel to connect between each core of electric capacity core group for the through -flow cross -section of DC capacitor is big, and the flowing capability of formation is strong, adopt the internal connection copper strips directly to draw forth the outside with the capacitance, simple structure, the reliability is high, can be in partial high temperature application scenario, the application demand of the heavy current that the processing lasts.
Description
[technical field]
This utility model patent relates to a kind of metallic film capacitor of DC support application in Power Electronic Circuit.
[background technology]
Power electronics industry development is swift and violent, along with increasing of power electronic equipment application scenario, the use electric field environment scope of its thin-film capacitor is also increasingly broader, and the voltage pulsation of part occasion, effective current value, ambient temperature etc. all have higher demand when using, especially when application scenario ambient temperature is significantly high, the effective current of its application is simultaneously also significantly high, and certain time, the electric propulsion startup etc. under such as hot weather. Traditional electrochemical capacitor, processes 1A electric current and about needs 50 �� F, when electric current is bigger, it is meant that needing bigger volume, practical matter cannot be tackled substantially. And being typically designed of thin film capacitor, process 1A electric current and about need 5 �� F, but the temperature rise of 10 ~ 15 DEG C can be formed, and when needing to process higher electric current, electric capacity can form higher temperature, if used under high temperature occasion, ambient temperature adds temperature rise simultaneously, often use temperature range beyond amount, now can greatly increase condenser failure probability.
For above-mentioned situation, we provide a solution.
[utility model content]
This utility model patent compensate for the not enough problem in above-mentioned prior art, it is provided that string film direct current capacitors in the metallized polypropylene film that a kind of through-current capability is strong, simple in construction, reliability are high.
String film direct current capacitors in a kind of, include shell, described case body top is provided with support, the bottom of described case body is provided with locating cover, it is provided with extraction electrode on the bracket, in described case body, it is provided with capacitance core subgroup, in described case body, is additionally provided with the inside being directly connected to capacitance core subgroup and extraction electrode connects copper strips, in the gap between described case body and capacitance core subgroup, be provided with solid filler; Described capacitance core subgroup is formed in parallel by the fuse of multiple interior string membrane structures.
In the improvement project to above-mentioned a kind of interior string film direct current capacitors, described fuse includes the electrode and the metallization high square resistance polypropylene film that are made up of intermediately remained border film and double-edge film.
In the improvement project to above-mentioned a kind of interior string film direct current capacitors, described shell is metallic aluminium shell.
Compared with prior art, the beneficial effects of the utility model are: this utility model flow path is short, and passage section is big, and through-current capability is strong, simple in construction, and reliability is high, it is possible in part high temperature application scenario, process the application demand of lasting big electric current.
Below in conjunction with accompanying drawing and detailed description of the invention, this utility model is described in further detail:
[accompanying drawing explanation]
Fig. 1 is the structural representation of this utility model embodiment;
Fig. 2 is the vertical view directional diagram of Fig. 1;
Fig. 3 is the structural representation of fuse in this utility model embodiment.
[detailed description of the invention]
This utility model is a kind of interior string film direct current capacitors, include shell 10, described shell 10 housing upper is provided with support 20, the bottom of described case body 10 is provided with locating cover 30, described support 20 is provided with extraction electrode 40, it is provided with capacitance core subgroup in described shell 10 housing, in described shell 10 housing, it is additionally provided with the inside being directly connected to capacitance core subgroup and extraction electrode 40 connects copper strips 50, in the gap between described shell 10 housing and capacitance core subgroup, be provided with solid filler 60; Described capacitance core subgroup is formed in parallel by the fuse 70 of multiple interior string membrane structures.
Further, described fuse 70 includes the electrode and the metallization high square resistance polypropylene film 73 that are made up of intermediately remained border film 71 and double-edge film 72, noninductive winding metal spraying technique is adopted to be fabricated to cylindric fuse 70, after processing through thermal finalization, fuse 70 is connected by parallel way, it is after assembled into shell 10, last Reperfu-sion solid filler 60.
Further, described shell 10 is metallic aluminium shell.
String structure in adopting due to direct current capacitors of the present utility model so that it is flow path is short; Parallel way is adopted to connect between each fuse 70 of capacitance core subgroup so that direct current capacitors passage section is big, and the through-current capability of formation is strong; Adopting the internal copper strips that connects that capacitance is directly drawn out to outside, simple in construction, reliability is high, it is possible in part high temperature application scenario, process the application demand of lasting big electric current.
Although describing this utility model in detail with reference to above example, but be it will be apparent to one skilled in the art that by the disclosure, and when the principle of the present utility model limited without departing from described claim and scope, this utility model can be made a variety of changes or revise. Therefore, the detailed description of disclosure embodiment is only used for explaining, rather than is used for limiting this utility model, but is defined by the subject-matter of the claims the scope of protection.
Claims (3)
1. string film direct current capacitors in a kind, it is characterized in that, include shell, described case body top is provided with support, the bottom of described case body is provided with locating cover, is provided with extraction electrode on the bracket, in described case body, be provided with capacitance core subgroup, in described case body, it is additionally provided with the inside being directly connected to capacitance core subgroup and extraction electrode connects copper strips, in the gap between described case body and capacitance core subgroup, be provided with solid filler; Described capacitance core subgroup is formed in parallel by the fuse of multiple interior string membrane structures.
2. string film direct current capacitors in one according to claim 1, it is characterised in that described fuse includes the electrode and the metallization high square resistance polypropylene film that are made up of intermediately remained border film and double-edge film.
3. string film direct current capacitors in one according to claim 1, it is characterised in that described shell is metallic aluminium shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520699825.7U CN205303190U (en) | 2015-09-10 | 2015-09-10 | Interior string of membrane DC capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520699825.7U CN205303190U (en) | 2015-09-10 | 2015-09-10 | Interior string of membrane DC capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205303190U true CN205303190U (en) | 2016-06-08 |
Family
ID=56438583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520699825.7U Active CN205303190U (en) | 2015-09-10 | 2015-09-10 | Interior string of membrane DC capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205303190U (en) |
-
2015
- 2015-09-10 CN CN201520699825.7U patent/CN205303190U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |