CN214254134U - Capacitor film for producing axial pin wound capacitor - Google Patents

Abstract

The utility model discloses a capacitance film for producing axial foot winding type capacitance, which comprises a strip-shaped organic film, an aluminum evaporation layer and a zinc evaporation layer; the upper side surface and the lower side surface of the strip-shaped organic film are both provided with atomizing layers for enhancing the adhesive force; a strip-shaped electrode metal layer is longitudinally arranged on the left side edge of each of the upper side surface and the lower side surface of each film winding unit; and a conductive reinforced metal strip is arranged on the atomizing layers on the upper side and the lower side and in the coverage range of each aluminum evaporation layer, and the conductive reinforced metal strip is electrically connected with the corresponding strip-shaped electrode metal layer. The capacitor film for producing the axial foot winding type capacitor utilizes the strip electrode metal layer to facilitate direct conductive connection of the electrode column of the capacitor when the capacitor is wound, so that an aluminum evaporation coating and a zinc evaporation coating are prevented from being damaged; the conductive structure performance can be enhanced by utilizing the conductive enhanced metal strip, the conductive performance of the aluminum evaporation layer and the zinc evaporation layer is ensured, and the service life of the capacitor is prolonged.

Description

Capacitor film for producing axial pin wound capacitor

Technical Field

The utility model relates to an electric capacity film, especially an electric capacity film for producing axial foot is around formula of book electric capacity.

Background

At present, the structure of the existing capacitor film is fixed, and only a rectangular metal film is evaporated on an organic film, but because the thickness of the metal film is limited, the metal film is possibly separated or damaged when the capacitor is rolled into a cylindrical shape, so that the reliability of the capacitor is reduced. Therefore, it is necessary to design a capacitor film for producing an axial wound capacitor, which has better reliability and prolongs the service life of the capacitor.

Disclosure of Invention

Utility model purpose: the capacitor film for producing the axial pin-wound capacitor has better reliability and prolonged service life.

The technical scheme is as follows: the utility model discloses a capacitance film for producing axial foot winding type capacitance, which comprises a strip-shaped organic film, an aluminum evaporation coating and a zinc evaporation coating; the upper side surface and the lower side surface of the strip-shaped organic film are both provided with atomizing layers for enhancing the adhesive force; longitudinal laser nicks are arranged at the corresponding positions of the atomizing layers on the upper side and the lower side at intervals and are used for dividing the strip-shaped organic film into film winding units at equal intervals; a strip-shaped electrode metal layer is longitudinally arranged on the left side edge of each of the upper side surface and the lower side surface of each film winding unit, the front end of the strip-shaped electrode metal layer on the upper side longitudinally extends to the front side length edge of the atomizing layer on the upper side, and the rear end of the strip-shaped electrode metal layer on the lower side longitudinally extends to the rear side length edge of the atomizing layer on the lower side; the aluminum evaporation layer is a rectangular metal film layer and is transversely arranged on the atomizing layers on the upper side and the lower side of each film winding unit at intervals; on the same film winding unit, the left sides of the aluminum evaporation layers on the upper side and the lower side are respectively lapped with the right sides of the strip-shaped electrode metal layers on the corresponding sides to realize electric connection; the zinc evaporation layer covers the aluminum evaporation layer, and the area of the zinc evaporation layer is the same as that of the aluminum evaporation layer; a conductive reinforced metal strip is arranged on the atomizing layers on the upper side and the lower side and positioned in the coverage range of each aluminum evaporation layer, and the conductive reinforced metal strip is electrically connected with the corresponding strip-shaped electrode metal layer; two ends of the conductive reinforced metal strip respectively extend to two opposite vertex angles of the aluminum evaporation layer, and orthographic projections of the upper conductive reinforced metal strip and the lower conductive reinforced metal strip are crossed in the same film winding unit; and a U-shaped positioning notch is arranged on the length edges of the two sides of the strip-shaped organic film and positioned at the end part of each longitudinal laser nick.

Furthermore, the area of the atomized layer is larger than that of the aluminum evaporation layer on the corresponding side, and an evaporation shielding layer pasting area is reserved on the periphery of the aluminum evaporation layer.

Furthermore, electrode column through holes are formed in the length edges of the two sides of the strip-shaped organic film, at the positions close to the front end of the strip-shaped electrode metal layer on the upper side and at the positions close to the rear end of the strip-shaped electrode metal layer on the lower side; and narrow gap notches are formed in the length edges of the two sides of the strip-shaped organic film and positioned on the left side and the right side of the through hole of each electrode column.

Compared with the prior art, the utility model, its beneficial effect is: the bar-shaped electrode metal layer can be used for conveniently and directly connecting the electrode column of the capacitor in a conductive manner when the capacitor is rolled, so that the aluminum evaporation layer and the zinc evaporation layer are prevented from being damaged; two strip electrode metal layers extending to different sides from top to bottom can be used for conveniently and electrically connecting and installing two axial conductive electrodes of the axial pin winding type capacitor; the conductive structure performance can be enhanced by utilizing the conductive enhanced metal strip, the conductive performance of the aluminum evaporation layer and the zinc evaporation layer is ensured, and the service life of the capacitor is prolonged; the U-shaped positioning notches are used for facilitating the machine to position the folding positions among the film winding units and carry out folding cutting along the longitudinal laser nicks; the atomization layer can enhance the adhesive force of the conductive strip-shaped electrode metal layer, the conductive enhanced metal strip and the aluminum evaporation layer, and the separation in the rolling process is prevented; the orthographic projections of the two conductive reinforced metal strips are arranged to be crossed, the thickness of each part of the capacitor is basically consistent when the capacitor is rolled, and compared with the existing superposition mode that the two conductive reinforced metal strips are concentrated at the middle position, the volume of the capacitor can be effectively reduced.

Drawings

FIG. 1 is a schematic diagram of a capacitor film segment according to the present invention;

fig. 2 is a schematic sectional view at a-a in fig. 1.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

Example 1:

as shown in fig. 1 and 2, the present invention discloses a capacitor film for producing axial wound capacitor, comprising: a strip-shaped organic film 1, an aluminum evaporation layer 3 and a zinc evaporation layer 4; the upper side surface and the lower side surface of the strip-shaped organic film 1 are both provided with an atomizing layer 2 for enhancing the adhesive force; the corresponding positions of the atomizing layers 2 on the upper side and the lower side are respectively provided with a plurality of longitudinal laser nicks 5 at intervals, and the longitudinal laser nicks are used for dividing the strip-shaped organic film 1 into a plurality of film winding units at equal intervals; a strip-shaped electrode metal layer 6 is longitudinally arranged on the left side edge of each of the upper side surface and the lower side surface of each film winding unit, the front end of the strip-shaped electrode metal layer 6 on the upper side longitudinally extends to the front side length edge of the atomizing layer 2 on the upper side, and the rear end of the strip-shaped electrode metal layer 6 on the lower side longitudinally extends to the rear side length edge of the atomizing layer 2 on the lower side; the aluminum evaporation coating 3 is a rectangular metal film layer and is transversely arranged on the atomizing layers 2 on the upper side and the lower side of each film winding unit at intervals; on the same film winding unit, the left sides of the aluminum evaporation coating layers 3 on the upper side and the lower side are respectively lapped with the right sides of the strip-shaped electrode metal layers 6 on the corresponding sides to realize electric connection; the zinc evaporation layer 4 covers the aluminum evaporation layer 3, and the area of the zinc evaporation layer 4 is the same as that of the aluminum evaporation layer 3; a conductive reinforced metal strip 7 is arranged on the atomizing layer 2 at the upper side and the lower side and in the coverage range of each aluminum evaporation layer 3, and the conductive reinforced metal strip 7 is electrically connected with the corresponding strip-shaped electrode metal layer 6; two ends of the conductive reinforced metal strip 7 respectively extend to two opposite vertex angles of the aluminum evaporation layer 3, and orthographic projections of the upper conductive reinforced metal strip 7 and the lower conductive reinforced metal strip 7 are crossed in the same film winding unit; and a U-shaped positioning notch 8 is arranged on the length edges of the two sides of the strip-shaped organic film 1 and positioned at the end part of each longitudinal laser nick 5.

The bar-shaped electrode metal layer 6 can be used for conveniently and directly connecting the electrode columns of the capacitor in a conductive manner when the capacitor is rolled, so that the aluminum evaporation layer 3 and the zinc evaporation layer 4 are prevented from being damaged; the two strip-shaped electrode metal layers 6 extending to different sides can be used for conveniently and electrically connecting and installing two axial conductive electrodes of the axial pin winding type capacitor; the conductive structure performance can be enhanced by utilizing the conductive enhanced metal strip 7, the conductive performance of the aluminum evaporation layer 3 and the zinc evaporation layer 4 is ensured, and the service life of the capacitor is prolonged; the U-shaped positioning notches 8 are used for facilitating the machine to position the folding positions among the film winding units and carry out folding cutting along the longitudinal laser nicks 5; the atomization layer 2 can enhance the adhesive force of the conductive strip-shaped electrode metal layer 6, the conductive enhanced metal strip 7 and the aluminum evaporation coating 3, and the separation in the rolling process is prevented; the orthographic projections of the two conductive reinforced metal strips 7 are arranged to be crossed, so that the thickness of each part of the stacked metal strips is basically consistent when the capacitor is rolled, and compared with the existing stacking mode that the metal strips are concentrated at the middle position, the volume of the capacitor can be effectively reduced.

Further, the area of the atomizing layer 2 is larger than that of the aluminum evaporation layer 3 on the corresponding side, and an evaporation shield layer sticking region is left at the peripheral edge of the aluminum evaporation layer 3. The evaporation coating shielding layer can be conveniently pasted in the evaporation coating shielding layer pasting area, so that the range of the evaporation coating area is controlled.

Further, an electrode column through hole 10 is respectively arranged at the front end position of the strip-shaped electrode metal layer 6 close to the upper side and the rear end position of the strip-shaped electrode metal layer 6 at the lower side on the length edges of the two sides of the strip-shaped organic film 1; narrow gap notches 9 are formed in the length edges of the two sides of the strip-shaped organic thin film 1 and located on the left side and the right side of each electrode column through hole 10. The capacitor electrode column can be penetrated and limited by the aid of the electrode column penetrating hole 10 when being mounted, and stability of the electrode column during winding is guaranteed; the narrow gap notch 9 can facilitate the turning and folding of the penetrating position after the electrode column penetrates through the electrode column penetrating hole 10, so that the electrode column is close to the strip-shaped electrode metal layer 6.

Further, the thickness of the aluminum evaporation layer 3 is 5-7 μm; the thickness of the zinc vapor deposition layer 4 is 19 to 22 μm. The thickness of the strip-shaped electrode metal layer 6 and the conductive reinforcing metal strip 7 is 20-24 μm. The distance between the length edge of the aluminum evaporation layer 3 and the length edge of the corresponding side of the strip-shaped organic film 1 is 6 mm. The gap width of two adjacent aluminum evaporation layers 3 on the same side surface is 5 mm.

The utility model discloses an electric capacity film for producing axial foot is around formula of book electric capacity when the preparation is used, bar electrode metal level 6, electrically conductive reinforcing metal strip 7, aluminium coating by vaporization layer 3 and zinc coating by vaporization layer 4 all adopt vacuum evaporation's mode coating by vaporization to form, and the shape of evaporating out all adopts and pastes the coating by vaporization shielding layer in advance and forms, and cladding material thickness forms through coating by vaporization time control.

As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. A capacitor film for producing an axial wound capacitor, comprising: comprises a strip-shaped organic film (1), an aluminum evaporation coating (3) and a zinc evaporation coating (4); the upper side surface and the lower side surface of the strip-shaped organic film (1) are respectively provided with an atomizing layer (2) for enhancing the adhesive force; longitudinal laser nicks (5) are arranged at the corresponding positions of the atomizing layers (2) on the upper side and the lower side at intervals and are used for dividing the strip-shaped organic film (1) into film winding units at equal intervals; a strip-shaped electrode metal layer (6) is longitudinally arranged on the left side edge of each of the upper side surface and the lower side surface of each film winding unit, the front end of the strip-shaped electrode metal layer (6) on the upper side longitudinally extends to the front side length edge of the atomizing layer (2) on the upper side, and the rear end of the strip-shaped electrode metal layer (6) on the lower side longitudinally extends to the rear side length edge of the atomizing layer (2) on the lower side; the aluminum evaporation layers (3) are rectangular metal film layers and are transversely arranged on the atomizing layers (2) on the upper side and the lower side of each film winding unit at intervals; on the same film winding unit, the left sides of the aluminum evaporation layers (3) on the upper side and the lower side are respectively lapped with the right sides of the strip-shaped electrode metal layers (6) on the corresponding sides to realize electric connection; the zinc evaporation layer (4) covers the aluminum evaporation layer (3), and the area of the zinc evaporation layer (4) is the same as that of the aluminum evaporation layer (3); a conductive reinforced metal strip (7) is arranged on the atomizing layer (2) on the upper side and the lower side and in the coverage range of each aluminum evaporation layer (3), and the conductive reinforced metal strip (7) is electrically connected with the corresponding strip-shaped electrode metal layer (6); two ends of the conductive reinforced metal strip (7) respectively extend to two opposite vertex angles of the aluminum evaporation layer (3), and orthographic projections of the upper conductive reinforced metal strip (7) and the lower conductive reinforced metal strip (7) are crossed in the same film winding unit; and a U-shaped positioning notch (8) is arranged on the length edges of the two sides of the strip-shaped organic film (1) and positioned at the end part of each longitudinal laser nick (5).

2. The capacitor film for producing an axial wound capacitor as claimed in claim 1, wherein: the area of the atomizing layer (2) is larger than that of the aluminum evaporation layer (3) on the corresponding side, and an evaporation shielding layer pasting area is reserved on the periphery of the aluminum evaporation layer (3).

3. The capacitor film for producing an axial wound capacitor as claimed in claim 1, wherein: an electrode column through hole (10) is respectively arranged at the front end position of the strip-shaped electrode metal layer (6) close to the upper side and the rear end position of the strip-shaped electrode metal layer (6) at the lower side on the length edges of the two sides of the strip-shaped organic film (1); narrow gap notches (9) are arranged on the length edges of the two sides of the strip-shaped organic film (1) and on the left side and the right side of each electrode column through hole (10).

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