CN218100987U

CN218100987U - Capacitor composite film

Info

Publication number: CN218100987U
Application number: CN202221829770.3U
Authority: CN
Inventors: 陈华国; 周斌迁; 周颖颖; 陈华清
Original assignee: Taizhou Haoda Electrical Machinery Co ltd
Current assignee: Taizhou Haoda Electrical Machinery Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-12-20
Anticipated expiration: 2032-07-15

Abstract

The utility model provides a capacitor composite film, which relates to the technical field of capacitors and comprises a first film layer and a second film layer which are connected together by a buffer component; the first film layer is detachably connected with the second film layer through a connecting component; the second film layer is detachably connected with the third film and the fourth film through the connecting assembly. The composite film main body will not loosen easily and separate from each other; when the composite membrane main body is subjected to pressure impact force, buffer is formed, and deformation generated by the composite membrane main body is reduced, so that the compression resistance and deformation resistance of the composite membrane main body are improved, and the anti-explosion capability of the composite membrane main body can be endowed.

Description

Capacitor composite film

Technical Field

The utility model relates to a condenser technical field especially relates to a condenser composite film.

Background

The film capacitor is also called a plastic film capacitor, which uses a plastic film as a dielectric. In order to provide a film capacitor with better performance, the existing capacitor film is usually a composite film formed by bonding a plurality of films.

The existing composite membrane is simple in structure because a plurality of layers of thin membranes are only adhered together, the membranes are easy to loosen after the temperature rises, and the compression resistance and the seismic resistance are poor because the membranes are thin.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide a condenser composite film.

The utility model discloses a following technical means realizes solving above-mentioned technical problem: a capacitor composite film comprising a first film layer and a second film layer connected together by a buffer component; the first film layer is detachably connected with the second film layer through a connecting component; the second film layer is detachably connected with the third film and the fourth film through the connecting assembly.

Further, coupling assembling includes joint piece and joint groove, and the joint piece extends to the inside in joint groove.

Furthermore, a plurality of air containing cavities are arranged on the surface, close to the clamping block, of the clamping groove and are distributed at equal intervals along the inner wall of the clamping groove.

Furthermore, along the height direction of the air containing cavity, the inner diameter of the air containing cavity is increased and then reduced.

Furthermore, the buffering assembly is arranged between the second film and the third film and comprises a plurality of buffering parts.

Furthermore, the buffer part comprises a plurality of shock-proof parts which are distributed at equal intervals along the length direction of the second film.

Furthermore, the antidetonation piece comprises two adjacent and sunken the same deformation of direction, and the tip of deformation is provided with the connection piece.

Furthermore, the deformation pieces are sigma-shaped or C-shaped, and two adjacent deformation pieces are symmetrically distributed.

Furthermore, the first film and the fourth film are metalized films, and the second film and the third film are one of plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate, and are different.

The utility model has the advantages that:

in the utility model, the first film and the second film, and the third film and the fourth film are respectively detachably connected into the first film layer and the second film layer, so that the main body of the composite film can not be easily loosened and separated from each other; and the buffer assembly is arranged between the two thin film layers, so that the buffer assembly can buffer the composite film main body when the composite film main body is subjected to pressure impact force, and the deformation of the composite film main body is reduced, thereby increasing the compression resistance and deformation resistance of the composite film main body and endowing the composite film main body with the anti-explosion capability.

Drawings

Fig. 1 is a schematic cross-sectional structural view of the composite film of the capacitor of the present invention;

fig. 2 is another schematic cross-sectional structure diagram of the composite film of the capacitor of the present invention;

fig. 3 is a schematic view of a partial cross-sectional structure of the composite film of the capacitor of the present invention;

fig. 4 is a schematic view of another partial cross-sectional structure of the composite film for capacitor of the present invention;

fig. 5 is an enlarged schematic view of a structure in fig. 3 according to the present invention.

In the figure: 10. a composite membrane body; 11. a first film; 12. a second film; 13. a third film; 14. a fourth film; 20. a connecting assembly; 21. a clamping block; 22. an air containing cavity; 23. a clamping groove; 30. a first buffer member; 31. a first connecting piece; 32. a first deforming member; 40. a second buffer member; 41. a second deforming member; 42. a second connecting sheet.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Examples

As shown in fig. 1 to 5, the composite film for capacitor of the present embodiment includes a first film 11, a second film 12, a third film 13, and a fourth film 14, which are sequentially disposed, wherein,

the first film 11 and the second film 12, and the third film 13 and the fourth film 14 are detachably connected through a connecting assembly 20; the first film 11 and the second film 12 are combined to form a first film layer, and the third film 13 and the fourth film 14 are combined to form a second film layer.

Referring to fig. 5, the connection assembly 20 is described by taking as an example the first film layer formed between the first film 11 and the second film 12:

the connecting assembly 20 comprises a clamping block 21 fixedly arranged on the surface of the second film 12, a clamping groove 23 is formed in the surface of the first film 11, and the clamping block 21 extends into the clamping groove 23;

the first film 11 and the second film 12 are connected together by the cooperation of the clamping blocks 21 and the clamping grooves 23.

Wherein, the surface of the clamping groove 23 close to the clamping block 21 is provided with a plurality of air containing cavities 22, and the air containing cavities 22 are distributed at equal intervals along the inner wall of the clamping groove 23;

the vertical cross section of the air containing cavity 22 is roughly pear-shaped, that is, the inner diameter of the air containing cavity 22 is increased and then reduced along the height direction of the air containing cavity 22.

During the use, the inner wall of holding air cavity 22 and joint piece 21 is direct contact not, and it has a certain amount of air to fill in holding air cavity 22's inside, when being supported tightly between second film 12 and third film 13, these air can form the buffering between joint piece 21 and joint groove 23, prevents to be extrudeed between joint piece 21 and the joint groove 23.

Referring to fig. 1 to 4, a buffer assembly is disposed between the first film and the second film, and the first film and the second film are connected together by the buffer assembly; that is, the buffer member is disposed between the second film 12 and the third film 13; the buffering component may be the first buffering component 30 or the second buffering component 40.

Referring to fig. 3, when the buffering assembly is the first buffering member 30, the first buffering member 30 includes a first deforming member 32 and first connecting pieces 31 disposed at upper and lower ends of the first deforming member 32;

specifically, the first deforming pieces 32 are sigma-shaped, and two adjacent first deforming pieces 32 are symmetrically distributed; when the two first deforming pieces 32 are deformed under stress, the stress and the force are relatively uniform; wherein the first deforming parts 32 are equally spaced along the length of the second film 12.

The upper end and the lower end of the first deformation element 32 are closely attached with a first connecting piece 31, and the first connecting piece 31 is fixedly connected with the corresponding second film 12 or the third film 13.

During the use, because the shape characteristic and the distribution characteristic of first morphable piece 32 self, when first rete or second rete received pressure, utilize the deformation of self, form the buffering to the atress, reduce the atress of two thin layers, reduce the deformation degree.

Referring to fig. 4, the second buffer member 40 includes a second deformation element 41 and a second connection piece 42 closely attached to a top end of the second deformation element 41, wherein the second buffer member 40 is different from the first buffer member 30 in shape and will not be further described.

Referring to fig. 4, the second deforming member 41 has a substantially C shape and is disposed along the length of the third film 13.

As a further limitation, with reference to fig. 3 and 4, two adjacent second deformation members 41 or first deformation members 32 with the same depression direction form a shock-proof member; the pressing force or impact can be absorbed.

Referring to fig. 1 to 5, the film material of the film capacitor mainly includes a plastic film or a metalized film such as polyethylene, polypropylene, polystyrene, or polycarbonate; in the scheme, the improvement point is not focused on the film material, but the anti-seismic and anti-compression performance of the existing composite film is emphatically solved.

The first film 11 and the fourth film 14 are metallized films, and the second film 12 and the third film 13 are one of the above plastic film materials, and the two plastic film materials are different.

Forming a composite film by matching a first film 11, a second film 12, a third film 13 and a fourth film 14; the material of the snap-in block 21 is the same as that of the corresponding second film 12 or third film 13, and the material of the second cushion member 40 and the first cushion member 30 is a metal sheet.

In the scheme, the first film 11 and the second film 12, and the third film 13 and the fourth film 14 are detachably connected into the first film layer and the second film layer respectively, so that the composite film main body 10 cannot be loosened easily and separated from each other; and set up the buffer assembly between two thin layers, can form the buffering when the complex film main part 10 receives pressure impact force, reduce the deformation that the complex film main part 10 produced to increase the resistance to compression resistance and deformation ability of complex film main part 10, also can give the antiknock ability of complex film main part 10.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A capacitor composite film, characterized by: comprises a first film layer and a second film layer connected together by a buffer component; the first film layer is detachably connected with the second film layer (12) through a connecting component (20) by a first film (11); the second film layer is detachably connected by a third film (13) and a fourth film (14) through a connecting component (20).

2. The composite film for capacitors as claimed in claim 1, wherein: coupling assembling (20) are including joint piece (21) and joint groove (23), and joint piece (21) extends to the inside in joint groove (23).

3. The composite film for capacitors as claimed in claim 2, wherein: the surface of the clamping groove (23) close to the clamping block (21) is provided with a plurality of air containing cavities (22), and the air containing cavities (22) are distributed at equal intervals along the inner wall of the clamping groove (23).

4. A capacitor composite film according to claim 3, wherein: along the height direction of the air containing cavity (22), the inner diameter of the air containing cavity (22) is increased and then reduced.

5. The composite film for capacitors as claimed in claim 1, wherein: the buffer assembly is arranged between the second film (12) and the third film (13), and comprises a plurality of buffer parts.

6. The composite capacitor film as defined in claim 5, wherein: the buffer member comprises a plurality of shock-proof members which are distributed at equal intervals along the length direction of the second film (12).

7. The composite film for capacitors as claimed in claim 6, wherein: the antidetonation piece comprises two adjacent and sunken the same deformation of direction, and the tip of deformation is provided with the connection piece.

8. The composite film for capacitors as claimed in claim 7, wherein: the deformation pieces are sigma-shaped or C-shaped, and two adjacent deformation pieces are symmetrically distributed.

9. A capacitor composite film according to any one of claims 1 to 8, wherein: the first film (11) and the fourth film (14) are metalized films, and the second film (12) and the third film (13) are one of plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate and are different.