CN202855549U - Metallized thin-film capacitor - Google Patents
Metallized thin-film capacitor Download PDFInfo
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- CN202855549U CN202855549U CN 201220603927 CN201220603927U CN202855549U CN 202855549 U CN202855549 U CN 202855549U CN 201220603927 CN201220603927 CN 201220603927 CN 201220603927 U CN201220603927 U CN 201220603927U CN 202855549 U CN202855549 U CN 202855549U
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- single face
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Abstract
The utility model discloses a metallized thin-film capacitor, and relates to the field of capacitors, so as to solve the technical problems that the existing metallized thin-film capacitor is low in storage capacity, poor in voltage resistance ability and poor in current resistance ability. The metallized thin-film capacitor comprises a shell, leads and a capacitor core, wherein a single-side double-margin metallized thin film of the upper layer, a double-side metallized thin film of the middle layer and a single-side double-margin metallized thin film of the lower layer are sequentially stacked and rolled to form the capacitor core; as for the single-side double-margin metallized thin film of the upper layer, a first metal layer is plated on the middle part of the upper surface of the thin film and two edges are left unplated; as for the double-side metallized thin film of the middle layer, a second metal layer is plated on the upper surface of the thin film, a third metal layer is plated on the lower surface thin film, and no place is left unplated; and as for the single-side double-margin metallized thin film of the lower layer, a fourth metal layer is plated on the middle part of the lower surface of the thin film and two margins are left unplated. The metallized thin-film capacitor is applicable to the field of capacitors.
Description
Technical field
The utility model relates to a kind of capacitor, is specifically related to a kind of metallic film capacitor.
Background technology
Capacitor is the main electronic device that consists of electronic circuit, and along with developing rapidly of science and technology, the use material of capacitor and various structure are in constantly being developed and designing.Wherein metallic film capacitor occupies very large market with its superior performance, metallic film capacitor comprises that thin dielectric film and the evaporation metal electrode on film combines in a variety of forms, film can be polypropylene or polyimides etc., the film thickness scope is generally 2 μ m to 24 μ m, and metal electrode thickness is 4 μ m to 10 μ m.The inductance of metallic film capacitor is to be determined by the width of thin dielectric film, and the inductance that the occasion capacitor unit that requires at high capacitance provides also can increase, and capacitor can be punctured by electric charge when acting on high-voltage field and close, and causes capacitor to lose efficacy; And the breakdown strength of dielectric film is low, causes security and stability poor.The fuse of existing metallic film capacitor is mostly reeled by monolateral evaporated film and dielectric film stack and is formed, seal unidirectional drawing with fire proofing again, has good electric property, small loss and other features, be particularly suitable in instrument, electricity-saving lamp and the electronic rectifier device, but because the single problem of structural design of metallic film capacitor fuse, memory capacity is low so that metallic film capacitor exists, proof voltage ability and the poor problem of withstanding current capability.
The utility model content
The utility model is to solve existing metallic film capacitor, has that memory capacity is low, proof voltage ability and a poor technical problem of withstanding current capability, and a kind of metallic film capacitor is provided.
The utility model is to address the above problem the technical scheme of taking to be: a kind of metallic film capacitor, formed by housing, lead-in wire and capacitor body, wherein, described capacitor body is to be laminated successively to roll by upper strata single face double-edge metallized film, intermediate layer double-sided metal film and lower floor's single face double-edge metallized film to form; Described upper strata single face double-edge metallized film plates the first metal layer for the mid portion at the upper surface of film, leaves a blank and do not plate in both sides; Described intermediate layer double-sided metal film is for plating the second metal level at the upper surface of film, plates the 3rd metal level at the lower surface of film, all do not leave a blank; Described lower floor single face double-edge metallized film plates the 4th metal level for the mid portion at the film lower surface, leaves a blank and do not plate in both sides; The lead-in wire on the left side connects the first metal layer and the 3rd metal level, and draws from housing; The lead-in wire on the right connects the second metal level and the 4th metal level, and draws from housing.
Good effect of the present utility model is: one, because a kind of metallic film capacitor has formed the structure of two capacitor unit parallel connections in inside, improved the memory capacity of capacitor; Two, because the increase of the capacity of capacitor and the bifurcated characteristic of internal parallel structure, improved the withstanding current capability of capacitor; Three, form the structure of outside series connection by reeling, formed the structure of the outside series connection of a plurality of capacitors, improved the voltage endurance capability of capacitor; Four, since a kind of metallic film capacitor by thin-film material and on thin-film material the mode by evaporation plate the layer of metal layer, and the characteristic that can twine of film is so that the volume of capacitor itself is less; Five, because thin-film material adopts is polyimide film, have higher breakdown strength, thereby improved the security and stability of capacitor.
Description of drawings
Fig. 1 is the structural representation of capacitor body in the capacitor of the utility model embodiment one.Wherein, 1 is upper strata single face double-edge metallized film; 2 is intermediate layer double-sided metal film; 3 is lower floor's single face double-edge metallized film; 4-1 is the first metal layer; 4-2 is the second metal level; 4-3 is the 3rd metal level; 4-4 is the 4th metal level; 5 is housing; 6 are lead-in wire.
Embodiment
Embodiment one: in conjunction with Fig. 1, present embodiment is a kind of metallic film capacitor, formed by housing 5, lead-in wire 6 and capacitor body, wherein, described capacitor body is to be laminated successively to roll by upper strata single face double-edge metallized film 1, intermediate layer double-sided metal film 2 and lower floor's single face double-edge metallized film 3 to form; Described upper strata single face double-edge metallized film 1 plates the first metal layer 4-1 for the mid portion at the upper surface of film, leaves a blank and do not plate in both sides; Described intermediate layer double-sided metal film 2 plates the second metal level 4-2 for the upper surface at film, plates the 3rd metal level 4-3 at the lower surface of film, does not all leave a blank; Described lower floor single face double-edge metallized film 3 plates the 4th metal level 4-4 for the mid portion at the lower surface of film, leaves a blank and do not plate in both sides; The lead-in wire 6 on the left side connects the first metal layer 4-1 and the 3rd metal level 4-3, and draws from housing 5; The lead-in wire 6 on the right connects the second metal level 4-2 and the 4th metal level 4-4, and draws from housing 5.
A kind of metallic film capacitor of present embodiment, the first metal layer 4-1, film and the second metal level 4-2 of upper strata single face double-edge metallized film 1 have consisted of first capacitor unit, the 3rd metal level 4-3, lower floor's single face double-edge metallized film 3 and the 4th metal level 4-4 have consisted of the structure that second capacitor unit formed two capacitor internal parallel connections, increased greatly the memory capacity of capacitor, the increase of condenser capacity and bifurcated characteristic in parallel, improved the flow-resistant capacity of capacitor, form the structure of outside series connection by reeling, form the structure of the outside series connection of a plurality of capacitors, improved the voltage endurance capability of capacitor; Since a kind of metallic film capacitor of present embodiment by thin-film material and on thin-film material the mode by evaporation plate the layer of metal layer, and the characteristic that can twine of film is so that the volume of capacitor itself is little.
Embodiment two: the difference of present embodiment and embodiment one is, described upper strata single face double-edge metallized film 1, intermediate layer double-sided metal film 2 are consistent with the width of lower floor single face double-edge metallized film 3.Other is identical with embodiment one.
Embodiment three: present embodiment and embodiment one or twos' difference is that the film that described upper strata single face double-edge metallized film 1, intermediate layer double-sided metal film 2 and lower floor's single face double-edge metallized film 3 adopt is polyimide film.Other is identical with embodiment one or two.
Embodiment four: the difference of one of present embodiment and embodiment one to three is that the width of leaving a blank of described upper strata single face double-edge metallized film 1 is 0.5mm ~ 1.5mm.Other is identical with embodiment one to three.
Embodiment five: the difference of one of present embodiment and embodiment one to four is that the width of leaving a blank of described lower floor single face double-edge metallized film 3 is 0.5mm ~ 1.5mm.Other is identical with embodiment one to four.
Embodiment six: the difference of one of present embodiment and embodiment one to five is, the double-edge distance of described upper strata single face double-edge metallized film 1 is consistent with the double-edge distance of lower floor single face double-edge metallized film 3.Other is identical with embodiment one to five.
The above specific embodiment, the example of just lifting for the ease of understanding should not be considered to be the restriction to the utility model scope, and the impartial design variation of such as doing according to the utility model claim all should be technology of the present utility model and contains.
Claims (6)
1. metallic film capacitor, be comprised of housing (5), lead-in wire (6) and capacitor body, it is characterized in that: described capacitor body is to be laminated successively to roll by upper strata single face double-edge metallized film (1), intermediate layer double-sided metal film (2) and lower floor's single face double-edge metallized film (3) to form; Described upper strata single face double-edge metallized film (1) plates the first metal layer (4-1) for the mid portion at the upper surface of film, leaves a blank and do not plate in both sides; Described intermediate layer double-sided metal film (2) is for plating the second metal level (4-2) at the upper surface of film, plates the 3rd metal level (4-3) at the lower surface of film, all do not leave a blank; Described lower floor's single face double-edge metallized film (3) plates the 4th metal level (4-4) for the mid portion at the lower surface of film, leaves a blank and do not plate in both sides; The lead-in wire on the left side (6) connects the first metal layer (4-1) and the 3rd metal level (4-3), and draws from housing (5); The lead-in wire (6) on the right connects the second metal level (4-2) and the 4th metal level (4-4), and draws from housing (5).
2. a kind of metallic film capacitor according to claim 1 is characterized in that, described upper strata single face double-edge metallized film (1), intermediate layer double-sided metal film (2) are consistent with the width of lower floor's single face double-edge metallized film (3).
3. a kind of metallic film capacitor according to claim 1 and 2, it is characterized in that: the film that described upper strata single face double-edge metallized film (1), intermediate layer double-sided metal film (2) and lower floor's single face double-edge metallized film (3) adopt is polyimide film.
4. a kind of metallic film capacitor according to claim 1 and 2, it is characterized in that: the width of leaving a blank of described upper strata single face double-edge metallized film (1) is 0.5mm ~ 1.5mm.
5. a kind of metallic film capacitor according to claim 1 and 2, it is characterized in that: the width of leaving a blank of described lower floor's single face double-edge metallized film (3) is 0.5mm ~ 1.5mm.
6. a kind of metallic film capacitor according to claim 1 and 2 is characterized in that: the double-edge distance of described upper strata single face double-edge metallized film (1) is consistent with the double-edge distance of lower floor's single face double-edge metallized film (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603927 CN202855549U (en) | 2012-11-15 | 2012-11-15 | Metallized thin-film capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603927 CN202855549U (en) | 2012-11-15 | 2012-11-15 | Metallized thin-film capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202855549U true CN202855549U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603927 Expired - Fee Related CN202855549U (en) | 2012-11-15 | 2012-11-15 | Metallized thin-film capacitor |
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| CN (1) | CN202855549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108257783A (en) * | 2017-12-30 | 2018-07-06 | 汪逸凡 | A kind of preparation method of the capacitor metalized film of automatic reduction type |
-
2012
- 2012-11-15 CN CN 201220603927 patent/CN202855549U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108257783A (en) * | 2017-12-30 | 2018-07-06 | 汪逸凡 | A kind of preparation method of the capacitor metalized film of automatic reduction type |
| CN108257783B (en) * | 2017-12-30 | 2019-12-03 | 山东众鑫电子材料有限公司 | A kind of preparation method of the capacitor metalized film of automatic reduction type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20151115 |
|
| EXPY | Termination of patent right or utility model |