CN208460566U - A kind of metallic film capacitor of single string pin pitch 5mm - Google Patents

Abstract

The utility model discloses the metallic film capacitors of single string pin pitch 5mm a kind of, and solving the problems, such as the prior art, there are capacitor low precision, qualification rate are low when winding production.The utility model includes the first film and the second film for being bonded to each other and being wound in the direction of length, the top and bottom of the first film are vapor-deposited with the first evaporated metal layer and the second evaporated metal layer respectively, the side of first evaporated metal layer is flushed with the side of the first film, the other side of first evaporated metal layer and the other side distance of the first film are 1.5mm, the side of second evaporated metal layer is flushed with the other side of the first film, the other side of second evaporated metal layer and a lateral extent of the first film are 1.5mm, second film is light film, the top surface of second film and the bottom surface of the second evaporated metal layer fit, and the second film is located at the underface center of the first film.The utility model structure is simple, design is scientific and reasonable, easy to use, and capacitor precision is high, qualification rate is high.

Description

A kind of metallic film capacitor of single string pin pitch 5mm

Technical field

The utility model relates to the metallic film capacitors of single string pin pitch 5mm a kind of.

Background technique

Capacitor is wound in the direction of length using two panels one-sided metallic film, so that capacitor is formed, capacitor body Cross-section structure see Fig. 1, capacitor winding schematic diagram is shown in Fig. 2.

In capacitor winding process, due to up- coiler guide wheel verticality, film dividing precision and winding tension etc. are many Changing factor exists, and misalignment position and size constantly change, and the effective area of two panels film is caused constantly to change, when it is big when it is small, The fuse capacity completed so as to cause same batch winding is inconsistent, and portioned product exceeds capacitor required precision.Identical winding Parameter, the fuse capacity volume variance after the completion of winding is larger, is especially affected to small pin pitch (5mm and 7.5mm) capacitor, sternly Ghost image rings the qualification rate of product.

Utility model content

The utility model provides the metallic film capacitor of single string pin pitch 5mm a kind of, solves the prior art and is winding There is a problem of that capacitor low precision, qualification rate are low when production.

To achieve the above object, the technical solution adopted in the utility model is as follows:

A kind of metallic film capacitor of single string pin pitch 5mm, including be bonded to each other and be wound in the direction of length first The width of film and the second film, the first film and second film is respectively 5mm and 4mm, the first film Top and bottom are vapor-deposited with the first evaporated metal layer and the second evaporated metal layer respectively, and the width of first evaporated metal layer is 3.5mm, and the side of first evaporated metal layer is flushed with the side of the first film, first evaporated metal layer The other side and the first film the other side distance be 1.5mm, identical, the width of second evaporated metal layer is 3.5mm, and the side of second evaporated metal layer is flushed with the other side of the first film, second evaporation metal The other side of layer and a lateral extent of the first film are 1.5mm, and second film is light film, the top of second film Face and the bottom surface of second evaporated metal layer fit, and second film is located in the underface of the first film Centre.

Further, the thickness of the first film and second film is 9 μm.

Further, the misalignment between the first film and second film is 0.5mm.

Further, the side of staying between second film and second evaporated metal layer is 1mm.

Compared with prior art, the utility model has the following beneficial effects:

The utility model structure is simple, design is scientific and reasonable, easy to use, the metallized film electricity of this list string pin pitch 5mm Container uses width for 5mm and top and bottom are vapor-deposited with the first evaporated metal layer and the first of the second evaporated metal layer thin respectively The second film that film fitting width is 4mm is wound along its length, while making the mistake between the first film and the second film While being 0.5mm, stay side for 1mm between the second film and the second evaporated metal layer, and the thickness of the first film and the second film Degree is 9 μm.In this way, the metallic film capacitor for single string pin pitch 5mm that winding makes using the above structure, winding Capacity has 80% to can reach J superfine product (i.e. winding capacity is the 95% ~ 105% of theoretical capacity), and capacitor precision is high, qualification rate is high.This Utility model does not need to buy the high winding apparatus of precision and is wound, and can save large number of equipment expense；The utility model design It is practical, it is with a wide range of applications, is suitable for popularization and application.

Detailed description of the invention

Fig. 1 is existing metallic film capacitor single layer sectional drawing.

Fig. 2 is that capacitor winds schematic diagram.

Fig. 3 is the utility model metallic film capacitor single layer sectional drawing.

Wherein, the corresponding title of appended drawing reference are as follows:

1- the first film, the second film of 2-, the first evaporated metal layer of 3-, the second evaporated metal layer of 4-.

Specific embodiment

The utility model is described in further detail with embodiment for explanation with reference to the accompanying drawing, and the mode of the utility model includes But it is not limited only to following embodiment.

As shown in figure 3, the metallic film capacitor of single string pin pitch 5mm provided by the utility model a kind of, structure is simple, Design is scientific and reasonable, easy to use, and capacitor precision is high, qualification rate is high.The utility model includes being bonded to each other and along length side To the first film 1 and the second film 2 of winding, the width of the first film 1 and second film 2 be respectively 5mm and 4mm, the top and bottom of the first film 1 are vapor-deposited with the first evaporated metal layer 3 and the second evaporated metal layer 4 respectively, described The width of first evaporated metal layer 3 is 3.5mm, and the one of the side of first evaporated metal layer 3 and the first film 1 Side flushes, and the other side distance of the other side of first evaporated metal layer 3 and the first film 1 is 1.5mm, identical, The width of second evaporated metal layer 4 is 3.5mm, and the side of second evaporated metal layer 4 and the first film 1 The other side flush, a lateral extent of the other side of second evaporated metal layer 4 and the first film 1 is 1.5mm, described Second film 2 is light film, and the top surface of second film 2 and the bottom surface of second evaporated metal layer 4 fit, and described Second film 2 is located at the underface center of the first film 1.

The utility model uses width for 5mm and top and bottom are vapor-deposited with the first evaporated metal layer and the second vapor deposition respectively The second film that the first film fitting width of metal layer is 4mm is wound along its length, while making the first film 1 and the Misalignment between two films 2 is 0.5mm, and the side of staying between the second film 2 and the second evaporated metal layer 4 is 1mm, and first is thin The thickness of film 1 and the second film 2 is 9 μm, the metallized film for single string pin pitch 5mm that so winding makes using the above structure Capacitor, winding capacity have 80% to can reach J superfine product (i.e. winding capacity is the 95% ~ 105% of theoretical capacity), capacitor precision High, qualification rate height.

Design parameter between each component of the utility model are as follows: the thickness of the first film 1 and second film 2 is equal It is 9 μm, the misalignment between the first film 1 and second film 2 is 0.5mm, and second film 2 and described second are steamed Side of staying between metal cladding 4 is 1mm.

Piece of metal film is carried out two-sided vapor deposition by the utility model, is formed two-sided metallization film, is formed capacitor In addition one sheet of film uses light film, and the two overlaps to form capacitor, such as Fig. 3 by diagram rule.

The utility model can eliminate the misalignment in winding process and change bring volume change, to improve product essence Degree, so that qualification rate greatly improves, it is specific as follows:

The calculation of capacity formula of metallized film wound capacitor:

Wherein:

C-condenser capacity

C-effective film width

The effective spooling length of l-

D-film thickness

For the capacitor in actual production process, after membrane material and windings setting, it is believed that d, l are fixed values, will It does not change, removes misalignment b and effective film width c, mutually run since film 1 and 2 exists in winding process, lead to it It constantly changes outer, remaining does not change.

It is wound at present using preferable Metal up- coiler, the variation range of the effective width c of capacitor can only control Into c-0.2mm ~ c+0.2mm, the condenser capacity which will lead to production changes in a certain range.

By taking the mono- string pin pitch 5mm capacitor of CL21-630V-562J of applicant's production as an example:

Using 9(μm of film) -4.5(mm) -1 (mm) (wide-Liu Bian of film thickness-film), the design of misalignment 0.5mm, using Fig. 1 knot When structure produces,

Effective width theoretical value are as follows:

c=4.5-1-1-0.5=2(mm)

Product effective width variation range after the completion of practical winding are as follows:

c+/-0.2(mm)=2+0.2/-0.2(mm)

Wind the range of capacity for the product completed are as follows:

Capacity is offline :=1.8/2=90%

Maximum size is 2.2/2=110%.

That is: Fig. 1 design structure is used, winding capacity is the 90% ~ 110% of theoretical capacity when actual production, all cannot be produced Product reach the requirement of J superfine product (95% ~ 105%).

It is counted according to applicant's actual production, J superfine product qualification rate is only 80% or so.

And produced using the utility model structure, although film 1 and 2 is in winding, there is also the problems of running, not By how to run, the effective width c1 of capacitor does not change, to eliminate since winding apparatus problem bring is rolled up The problem of around capacity tolerance.

It is counted according to applicant's actual production, using the capacitor of the utility model structure production, its J superfine product qualification rate reaches To 98% or more.

The utility model is simple and reliable；It does not need to buy the high winding apparatus of precision to be wound, saves large number of equipment and take With；This new design is practical, is with a wide range of applications, and is suitable for popularization and application.

Above-described embodiment is only one of preferred embodiments of the present invention, should not be taken to limit the utility model Protection scope, as long as the utility model body design thought and mentally make have no the change of essential meaning or profit Color, it is solved the technical issues of it is still consistent with the utility model, the protection scope of the utility model should all be included in Within.

Claims (4)

1. a kind of metallic film capacitor of single string pin pitch 5mm, it is characterised in that: including being bonded to each other and rolling up along its length Around the first film (1) and the second film (2), the width of the first film (1) and second film (2) is respectively 5mm And 4mm, the top and bottom of the first film (1) are vapor-deposited with the first evaporated metal layer (3) and the second evaporated metal layer respectively (4), the width of first evaporated metal layer (3) be 3.5mm, and the side of first evaporated metal layer (3) with it is described The side of the first film (1) flushes, the other side of first evaporated metal layer (3) and the other side of the first film (1) Distance is 1.5mm, identical, and the width of second evaporated metal layer (4) is 3.5mm, and second evaporated metal layer (4) side is flushed with the other side of the first film (1), the other side of second evaporated metal layer (4) and described the One lateral extent of one film (1) be 1.5mm, second film (2) be light film, the top surface of second film (2) with it is described The bottom surface of second evaporated metal layer (4) fits, and second film (2) is located at the underface of the first film (1) Center.

2. the metallic film capacitor of single string pin pitch 5mm according to claim 1 a kind of, it is characterised in that: described the The thickness of one film (1) and second film (2) is 9 μm.

3. the metallic film capacitor of single string pin pitch 5mm according to claim 2 a kind of, it is characterised in that: described the Misalignment between one film (1) and second film (2) is 0.5mm.

4. the metallic film capacitor of single string pin pitch 5mm according to claim 3 a kind of, it is characterised in that: described the Side of staying between two films (2) and second evaporated metal layer (4) is 1mm.