CN102881452A - Damp-proof metallic film capacitor - Google Patents
Damp-proof metallic film capacitor Download PDFInfo
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- CN102881452A CN102881452A CN2012103966147A CN201210396614A CN102881452A CN 102881452 A CN102881452 A CN 102881452A CN 2012103966147 A CN2012103966147 A CN 2012103966147A CN 201210396614 A CN201210396614 A CN 201210396614A CN 102881452 A CN102881452 A CN 102881452A
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- Prior art keywords
- metallic film
- film capacitor
- protection against
- tide
- string
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Abstract
The object of the invention is to reduce clearance at an external side by adding a metallic coating part at the external edge of the external side of a dielectric layer, which can also reduce an external moisture intruding path, thus achieving damp-proof effect. In order to achieve the above object, the technical scheme of the invention is as follows: the damp-proof metallic film capacitor comprises a housing, a capacitor and a terminal, and is characterized in that the capacitor core comprises the dielectric layer and a metal pole plate; the metal pole plate is plated on the dielectric layer; a metallic coating is added at the external edge of the external side of the dielectric layer to reduce the clearance at the external edge.
Description
Technical field
The present invention relates to a kind of metallic film capacitor, especially a kind of metallic film capacitor of protection against the tide.
Background technology
Metallic film capacitor on the market generally adopts the coats of metal such as aluminium, zinc, allumen to make electrode, in order to reach the purpose that insulate between positive and negative electrode, all needs to be designed with blank and stay the limit on the coat of metal.But capacitor leaves blank (not having cladding portion) in the edge of medium mostly, and moisture is easy to enter thus capacitor, causes capacitor life-span to shorten.The present invention has carried out useful improvement in order to overcome defects.
Summary of the invention
The object of the invention is to solve above-mentioned deficiency of the prior art, a kind of metallic film capacitor is provided.
The objective of the invention is to reduce the outer gap of staying the place, limit by outside dielectric layer, staying the limit outer rim to increase a metallization cladding portion, and can dwindle external humidification and invade the path, reach the effect of protection against the tide.
To achieve these goals, technical scheme of the present invention is: a kind of metallic film capacitor of protection against the tide, comprise shell, capacitor body, terminal, it is characterized in that: described capacitor body comprises dielectric layer, metal polar plate, described metal polar plate is plated on the described dielectric layer, outside described dielectric layer, stay the edge on limit to increase a metallization coating, reduce the outer gap of staying the place, limit.
Further, the string number of described capacitor body is the odd number string structure, and the string number of described capacitor body is single string or three strings, and the string number of described capacitor body is the even number string structure, and the string number of described capacitor body is two string or four strings.
Further, described metallization coating structure is gradient sheet resistance coating structure, common sheet resistance coating structure or adds webbing sheet resistance coating structure, described capacitor body is takeup type structure or laminated structure, and described metal polar plate is common sheet resistance coating or cuts apart the shape safety diaphragm.
Beneficial effect of the present invention: compared with prior art, the present invention reduces the outer gap of staying the place, limit by staying outside the outside, limit to increase a metallization cladding portion, invades the path thereby dwindle external humidification, reach moistureproof effect, thereby prolong the useful life of metallic film capacitor.
Description of drawings
Fig. 1 is single string gradient sheet resistance coating structure of the present invention;
Fig. 2 is the common sheet resistance coating structures of two strings of the present invention;
Fig. 3 of the present invention three serially adds webbing sheet resistance coating structure;
Fig. 4 of the present invention four serially adds webbing sheet resistance coating structure;
Wherein, 1: metallization coating structure, 2: stay the limit outward.Blacking partly is metal polar plate, and openwork part is dielectric layer.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment.
Embodiments of the invention are with reference to shown in the figure 1,2,3,4.
Technical scheme of the present invention is: a kind of metallic film capacitor of protection against the tide, comprise shell, capacitor body, terminal, it is characterized in that: described capacitor body comprises dielectric layer, metal polar plate, described metal polar plate is plated on the described dielectric layer, outside described dielectric layer, stay the edge on limit to increase a metallization coating, reduce the outer gap of staying the place, limit.
Further, the string number of described capacitor body is the odd number string structure.
Further, the string number of described capacitor body is single string or three strings.
Further, the string number of described capacitor body is the even number string structure.
Further, the string number of described capacitor body is two string or four strings.
Further, described metallization coating structure is gradient sheet resistance coating structure, common sheet resistance coating structure or adds webbing sheet resistance coating structure.
Further, described capacitor body is takeup type structure or laminated structure.
Further, described metal polar plate is common sheet resistance coating or cuts apart the shape safety diaphragm.
Below metallic film capacitor structure and the moistureproof contrast test data of ordinary construction of two when tabulation protection against the tide of the present invention.
Experimental condition: 85 ℃ of temperature, humidity are 85%, and the frequency of AC power is 50Hz, voltage 240V.
Following table is the test situation of the metallic film capacitor of protection against the tide of the present invention:
Following table is the test situation of common metal film capacitor:
The useful life of the metallic film capacitor that can obviously find out protection against the tide of the present invention under abominable wet condition is apparently higher than the common metal film capacitor.
The above execution mode has only been expressed one embodiment of the present invention, but can not therefore be interpreted as limitation of the scope of the invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (8)
1. the metallic film capacitor of a protection against the tide, comprise shell, capacitor body, terminal, it is characterized in that: described capacitor body comprises dielectric layer, metal polar plate, described metal polar plate is plated on the described dielectric layer, outside described dielectric layer, stay the edge on limit to increase a metallization coating, reduce the outer gap of staying the place, limit.
2. the metallic film capacitor of protection against the tide according to claim 1, it is characterized in that: the string number of described capacitor body is the odd number string structure.
3. the metallic film capacitor of protection against the tide according to claim 2 is characterized in that: the string number of described capacitor body is single string or three strings.
4. the metallic film capacitor of protection against the tide according to claim 1, it is characterized in that: the string number of described capacitor body is the even number string structure.
5. the metallic film capacitor of protection against the tide according to claim 4 is characterized in that: the string number of described capacitor body is two string or four strings.
6. the metallic film capacitor of the described protection against the tide of any one according to claim 1-5, it is characterized in that: described metallization coating structure is gradient sheet resistance coating structure, common sheet resistance coating structure or adds webbing sheet resistance coating structure.
7. the metallic film capacitor of the described protection against the tide of any one according to claim 1-5, it is characterized in that: described capacitor body is takeup type structure or laminated structure.
8. the metallic film capacitor of the described protection against the tide of any one according to claim 1-5, it is characterized in that: described metal polar plate is common sheet resistance coating or cuts apart the shape safety diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103966147A CN102881452A (en) | 2012-10-18 | 2012-10-18 | Damp-proof metallic film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103966147A CN102881452A (en) | 2012-10-18 | 2012-10-18 | Damp-proof metallic film capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102881452A true CN102881452A (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103966147A Pending CN102881452A (en) | 2012-10-18 | 2012-10-18 | Damp-proof metallic film capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102881452A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683885A (en) * | 2016-12-21 | 2017-05-17 | 南通新江海动力电子有限公司 | Metalized thin film used for thin film capacitor |
| CN107464694A (en) * | 2017-08-03 | 2017-12-12 | 安徽省宁国市海伟电子有限公司 | A kind of etch-proof metallized film |
| CN114373634A (en) * | 2022-01-15 | 2022-04-19 | 佛山市肯博电子有限公司 | Metallized film capacitor and metal layer spraying and heat treatment method thereof |
| WO2022100377A1 (en) * | 2020-11-13 | 2022-05-19 | 厦门法拉电子股份有限公司 | Thin-film capacitor core |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496455A (en) * | 2011-11-29 | 2012-06-13 | 安徽赛福电子有限公司 | Middle margin single-layer metallized film capacitor |
| CN202796443U (en) * | 2012-10-11 | 2013-03-13 | 四川省科学城久信科技有限公司 | A pulse capacitor formed by high-square-resistance multi-inner-string double-face metallized films |
-
2012
- 2012-10-18 CN CN2012103966147A patent/CN102881452A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496455A (en) * | 2011-11-29 | 2012-06-13 | 安徽赛福电子有限公司 | Middle margin single-layer metallized film capacitor |
| CN202796443U (en) * | 2012-10-11 | 2013-03-13 | 四川省科学城久信科技有限公司 | A pulse capacitor formed by high-square-resistance multi-inner-string double-face metallized films |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683885A (en) * | 2016-12-21 | 2017-05-17 | 南通新江海动力电子有限公司 | Metalized thin film used for thin film capacitor |
| CN106683885B (en) * | 2016-12-21 | 2018-09-28 | 南通新江海动力电子有限公司 | Metallic thin film for thin film capacitor |
| CN107464694A (en) * | 2017-08-03 | 2017-12-12 | 安徽省宁国市海伟电子有限公司 | A kind of etch-proof metallized film |
| WO2022100377A1 (en) * | 2020-11-13 | 2022-05-19 | 厦门法拉电子股份有限公司 | Thin-film capacitor core |
| CN114373634A (en) * | 2022-01-15 | 2022-04-19 | 佛山市肯博电子有限公司 | Metallized film capacitor and metal layer spraying and heat treatment method thereof |
| CN114373634B (en) * | 2022-01-15 | 2023-12-26 | 佛山市肯博电子有限公司 | Metal layer spraying method of metallized film capacitor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130116 |