CN204632587U - A kind of anticreep welding film electric capacity - Google Patents
A kind of anticreep welding film electric capacity Download PDFInfo
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- CN204632587U CN204632587U CN201520394018.4U CN201520394018U CN204632587U CN 204632587 U CN204632587 U CN 204632587U CN 201520394018 U CN201520394018 U CN 201520394018U CN 204632587 U CN204632587 U CN 204632587U
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- film
- deielectric
- coating
- battery lead
- lead plate
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Abstract
The utility model essentially discloses a kind of anticreep welding film electric capacity, comprise capacitor core and metal pins, described capacitor core comprises battery lead plate and deielectric-coating, metal pins and battery lead plate, gilding layer is provided with between deielectric-coating, described capacitor core is 4 Rotating fields, be followed successively by battery lead plate, deielectric-coating, battery lead plate, deielectric-coating, battery lead plate is two-sided metallization aluminium film, two-sided metallization aluminium film comprises plastic film and is just located at plastic film, the aluminium film of reverse side, plastic film, the end that deielectric-coating is connected with gilding layer is equipped with stays thickened area, limit, the utility model solves traditional small size thin-film capacitor cannot bear high electric current, easily and the problem of metal pins loose contact.
Description
Technical field
The utility model relates to a kind of anticreep welding film electric capacity.
Background technology
In multiple electronic component, the electronic component that capacitor is that use face is the widest, consumption is maximum, does not replace, they play a different role in circuit respectively.Capacitor is various in style, and its basic structure is identical with principle, and two-plate is made up of sheet metal, and spacing is very little, and centre is separated by dielectric, forms capacitor.From the differentiation of materials and structures, be three large major products with ceramic capacitor, electrolytic capacitor and organic film condenser.Film capacitor, owing to having the good characteristics such as capacity is large, impedance is low, stray inductance is little, loss is low, is the capacitor that a kind of performance is very excellent.Film capacitor has again a kind of metallized film autofrettage, namely on a plastic film with the very thin metal of vacuum evaporation last layer with as electrode, to save the thickness of electrode foil, reduce the volume of capacitor unit capacity, its great advantage is " self-healing " characteristic, namely metallic film capacitor possess to return to by the light of nature immediately after single electric weakness or partial breakdown puncture before the self-healing property function of electrical property.
Namely metallized film capacitor is replace metal forming as electrode in the surperficial evaporation layer of metal film of polyester film, because the thickness of layer of metallized film is much smaller than the thickness of metal forming, therefore after winding, volume is also much little than type metal foil type electric capacity volume.The great advantage of metalized film electric capacity is " self-healing " property.If so-called self-healing property is exactly, thin film dielectrics is owing to putting existing defects at certain and occur puncture short under overvoltage effect, and the metal layer of breakdown point can be formed in instant melting evaporation under arcing one very little of metal area, make two of electric capacity pole pieces mutually insulated and still working on again, therefore greatly improve the reliability of capacitor work.Though metallic film capacitor has above-mentioned huge advantage, but compared with type metal foil type electric capacity, also there is weakness: one is that capacity stability is not so good as foil type capacitor, this is because metallized capacitance easily occurs that under long-term work condition capacity is lost and capacity all can be caused to reduce after self-healing; Two is that tolerance big current ability is poor, and this is because layer of metallized film is much thinner than metal forming, and bearing great current ability is more weak; Three is because the electrode thickness of diaphragm type is less, little with metal pins contact area, easily causes the problem of loose contact.
Utility model content
The utility model technical issues that need to address are, provide a kind of anticreep welding film electric capacity, solve traditional small size thin-film capacitor and cannot bear high electric current, easily and the problem of metal pins loose contact.
The technical solution of the utility model is: a kind of anticreep welding film electric capacity, comprise capacitor core and metal pins, described capacitor core comprises battery lead plate and deielectric-coating, gilding layer is provided with between metal pins and battery lead plate, deielectric-coating, described capacitor core is 4 Rotating fields, be followed successively by battery lead plate, deielectric-coating, battery lead plate, deielectric-coating, battery lead plate is two-sided metallization aluminium film, two-sided metallization aluminium film comprises plastic film and is located at the aluminium film of plastic film positive and negative, and the end that plastic film, deielectric-coating are connected with gilding layer is equipped with stays thickened area, limit.
Preferably, described plastic film is fire resistant polypropylene film, and described deielectric-coating is polypropylene light film.
Preferably, the cross section of described gilding layer is in " convex " shape, and the wider side of contact-making surface is connected with battery lead plate.
Preferably, described capacitor core outside is provided with sealing wax layer, and sealing wax layer comprises interior sealing wax layer and outer sealing wax layer, is provided with epoxy resin layer between interior sealing wax layer and outer sealing wax layer.
Preferably, described capacitor core outside is provided with sealing wax layer, and sealing wax layer outer cover has capacitor case, and capacitance shell wall is provided with louvre.
After adopting technique scheme, the utility model tool has the following advantages:
Capacitor core in the utility model is improved to four layers by traditional three layers, five layers, battery lead plate is by the structure with two-sided metallization aluminium film, namely all aluminium film is provided with in the positive and negative of plastic film, the thickness of battery lead plate is decreased from volume, but do not reduce in dielectric capacity, can not direct short-circuit under the impact of instant high-voltage big current, avoid high pressure arcing punch-through, improve the reliability of capacitor.Separate with deielectric-coating between two-layer two-sided metallization aluminium film, bottom increases by a layer dielectric again, not only effectively prevent from being short-circuited between two battery lead plates, can also greatly improve and optimize the magnitude of current of metallic film capacitor, and specially done at two-sided metallization aluminium film and deielectric-coating in the utility model and stay limit to process, and stay limit to thicken, in order to be exactly the contact area between increase with gilding layer, increase conductive area, prevent because electric capacity affects between lower two-sided metallization aluminium film and gilding layer by cold expanding shrinkage for a long time and sealing-off phenomenon occurs.
Accompanying drawing explanation
Accompanying drawing 1 is internal structure schematic diagram of the present utility model;
Accompanying drawing 2 is the schematic diagram of battery lead plate, deielectric-coating and gilding layer junction;
Accompanying drawing 3 is capacitor core external structure schematic diagram;
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1 to Figure 2, a kind of anticreep welding film electric capacity, comprise capacitor core and metal pins 3, described capacitor core comprises battery lead plate 1 and deielectric-coating 2, metal pins and battery lead plate, gilding layer 30 is provided with between deielectric-coating, described capacitor core is 4 Rotating fields, be followed successively by battery lead plate, deielectric-coating, battery lead plate, deielectric-coating, battery lead plate is two-sided metallization aluminium film, two-sided metallization aluminium film comprises plastic film 101 and is just located at plastic film, the aluminium film 102 of reverse side, capacitor core is by traditional three layers, five layers are improved to four layers, battery lead plate is by the structure with two-sided metallization aluminium film, namely all aluminium film is provided with at the positive and negative of plastic film, volume decreases the thickness of battery lead plate relative to traditional electrode foil, but do not reduce in dielectric capacity, can not direct short-circuit under the impact of instant high-voltage big current, avoid high pressure arcing punch-through, improve the reliability of capacitor, mutually wrong folded between two-layer two-sided metallization aluminium film, overall width is shortened for traditional same linear interval set-up mode, make the spacing of metal pins can be reduced to less than 10 millimeters, separate with deielectric-coating between two-layer two-sided metallization aluminium film, bottom increases by a layer dielectric again, not only effectively prevent from being short-circuited between two battery lead plates, can also greatly improve and optimize the magnitude of current of metallic film capacitor, the end that in the present embodiment, plastic film and deielectric-coating are connected with gilding layer is in addition equipped with stays thickened area, limit 10, because metallization aluminium film is relative to much little on metal foil thickness, also relatively little with the contact area of gilding layer, to expand with heat and contract with cold for a long time or under vibrated impact, two-sided metallization aluminium film is easy to and gilding layer generation sealing-off at electric capacity, so two-sided metallization aluminium film and deielectric-coating have specially done and stay limit to process in this enforcement, and stay limit to thicken, in order to be exactly the contact area between increase with gilding layer, increase conductive area, prevent because electric capacity affects between lower metallization aluminium film and gilding layer by cold expanding shrinkage for a long time and sealing-off phenomenon occurs, as preferably, the cross section of described gilding layer is in " convex " shape, the wider side of contact-making surface is inwards connected with battery lead plate, one outward facing sides of contact-making surface relative narrower, contact area between gilding layer and two-sided metallization aluminium film is increased in pairs, reduce the possibility of sealing-off more.In addition in order to reduce the internal vibration of capacitor core, on described metal pins, cover has damping cotton 301, the part vibration being transferred to metal pins from electronics mainboard can be absorbed by damping cotton, reduce the vibration of capacitor core part, thus the also corresponding probability decreasing sealing-off, improve the useful life of capacitor core, stability is better, damping cotton can be that two metal pins overlap a damping cotton separately separately, also can be that two metal pins intert jointly on the damping cotton that same volume is larger, in general the latter is socketed more convenient, the diameter of metal pins own is less, firmly one insert and can easily pass damping cotton, two metal pins intert one needs pressing once jointly.
Described plastic film is fire resistant polypropylene film, described deielectric-coating is polypropylene light film, plastic film in the present embodiment is preferably the fire resistant polypropylene film of high frequency, the isotacticity of the raw material particle that the fire resistant polypropylene film of high frequency and normal temperature polypropylene screen use is different, the fire resistant polypropylene film of high frequency use isotacticity to be greater than the polypropylene particles of 98.5, and normal temperature film uses polypropylene particles isotacticity to be less than 96.5, that is raw-material purity is higher, the fire resistant polypropylene film of high frequency at the ability of opposing temperature and machine capability resistance to voltage in the case of a high temperature also just along with significantly improving, also just will be good than the temperature resistant capability of normal temperature polypropylene screen many, capacitor heatproof is made to bring up to+110 DEG C by original+85 DEG C, the rated voltage of capacitor is made to bring up to 1250V by original 1000V, proof voltage brings up to 2.5UR by original 1.6UR, under high temperature occasion, every index is all improved largely, thus also improve reliability and the useful life of product.Be applicable to, in the high AC and DC circuit of high-temperature high-frequency big current, power, be particularly suitable for the energy-conserving light source circuit of the electricity-saving lamp of high-voltage large current medium-high frequency occasion, LED.
As shown in Figure 2, in order to strengthen heat resistance of the present utility model, described capacitor core outside is provided with sealing wax layer, sealing wax layer comprises interior sealing wax layer 41 and outer sealing wax layer 42, interior sealing wax layer adopts the mode of dipping, good with the laminating degree of capacitor core, can prevent from leaving bubble or space between capacitor core and interior sealing wax layer, thus ensure that between two-sided metallization aluminium film and gilding layer, degree of being close to is better, anti-sealing-off better effects if, epoxy resin layer 5 is provided with between interior sealing wax layer and outer sealing wax layer, wax layer possesses resistant to elevated temperatures characteristic, the structure of double-deck sealing wax layer has increased considerably high-temperature stability, and pressed from both sides one deck epoxy resin layer between two-layer sealing wax layer, epoxy resin layer stability is high, possesses good flame retardant effect, double-deck sealing wax layer is coordinated well to protect capacitor core, utilize this structure, general without outer cover capacitor case.
The utility model also has other embodiments; be that capacitor core external protective structures is different with the difference of the first embodiment; capacitor case is added unlike in this embodiment with embodiment; aesthetic appearance is unification relatively; and capacitor case wall is provided with louvre; ensure that the heat radiation of capacitor, minimizing is expanded with heat and contract with cold, and compares that to be useful in some temperature be not under very high operational environment.
Below only with regard to the utility model preferably example be described, but can not be interpreted as it is limitations on claims.The utility model not only limits to and above example, its concrete structure allows to change, those skilled in the art can make various change and distortion according to the utility model, only otherwise depart from spirit of the present utility model, all should belong to the scope that the utility model claims define.
Claims (5)
1. an anticreep welding film electric capacity, comprise capacitor core and metal pins (3), described capacitor core comprises battery lead plate (1) and deielectric-coating (2), metal pins and battery lead plate, gilding layer (30) is provided with between deielectric-coating, it is characterized in that: described capacitor core is 4 Rotating fields, be followed successively by battery lead plate, deielectric-coating, battery lead plate, deielectric-coating, battery lead plate is two-sided metallization aluminium film, two-sided metallization aluminium film comprises plastic film (101) and is just located at plastic film, the aluminium film (102) of reverse side, the end that plastic film and deielectric-coating are connected with gilding layer is equipped with stays thickened area, limit (10).
2. a kind of anticreep welding film electric capacity according to claim 1, is characterized in that: described plastic film is fire resistant polypropylene film, and described deielectric-coating is polypropylene light film.
3. a kind of anticreep welding film electric capacity according to claim 1, is characterized in that: the cross section of described gilding layer is in " convex " shape, and the wider side of contact-making surface is connected with battery lead plate.
4. a kind of anticreep welding film electric capacity as claimed in any of claims 1 to 3, it is characterized in that: described capacitor core outside is provided with sealing wax layer, sealing wax layer comprises interior sealing wax layer (41) and outer sealing wax layer (42), is provided with epoxy resin layer (5) between interior sealing wax layer and outer sealing wax layer.
5. a kind of anticreep welding film electric capacity as claimed in any of claims 1 to 3, it is characterized in that: described capacitor core outside is provided with sealing wax layer, sealing wax layer outer cover has capacitor case, and capacitance shell wall is provided with louvre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394018.4U CN204632587U (en) | 2015-06-09 | 2015-06-09 | A kind of anticreep welding film electric capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394018.4U CN204632587U (en) | 2015-06-09 | 2015-06-09 | A kind of anticreep welding film electric capacity |
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| Publication Number | Publication Date |
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| CN204632587U true CN204632587U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520394018.4U Expired - Fee Related CN204632587U (en) | 2015-06-09 | 2015-06-09 | A kind of anticreep welding film electric capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916441A (en) * | 2015-06-09 | 2015-09-16 | 长兴友畅电子有限公司 | Anti-unsoldering thin-film capacitor |
-
2015
- 2015-06-09 CN CN201520394018.4U patent/CN204632587U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916441A (en) * | 2015-06-09 | 2015-09-16 | 长兴友畅电子有限公司 | Anti-unsoldering thin-film capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Kaisong Inventor before: Luo Xuemin Inventor before: Liu Yu |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170906 Address after: Beijiao town Shunde District Foshan city Guangdong province 528000 widely taught community residents committee Nanyuan Road No. 3 Building No. 2425, one of the 8 industry city Patentee after: Shunde Foshan Lishan Electronic Technology Co., Ltd. Address before: District Changxin friends Cheong Electronics Co. Ltd 313100 Zhejiang city of Huzhou province Changxing County coal town BAIXIAN industry Patentee before: CHANGXING YOUCHANG ELECTRONICS CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20180609 |