CN218826672U

CN218826672U - Square aluminum electrolytic capacitor

Info

Publication number: CN218826672U
Application number: CN202222243254.9U
Authority: CN
Inventors: 陈潇洒
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2023-04-07
Anticipated expiration: 2032-08-25

Abstract

The utility model provides a square aluminum electrolytic capacitor, including square core package, sealed apron, rivet, dog-ear pin, square aluminium system shell, insulating film, square core package top is equipped with sealed apron, is fixed with two dog-ear pins through two rivet installations on the sealed apron, and the rivet end passes sealed apron and is connected with square core package, and the dog-ear pin passes through the rivet to be connected with square core package, and square core package is in square aluminium system shell, and square aluminium system shell and sealed apron sealing connection, square aluminium system shell coats and is stamped the one deck insulating film, the beneficial effects of the utility model reside in that: the aluminum electrolytic capacitor is in a flat cuboid shape, the volume capacity is increased by enlarging the transverse surface, and the vertical and horizontal heights of the aluminum electrolytic capacitor on the circuit board are lower than the vertical and horizontal heights of the cylindrical aluminum electrolytic capacitor with the same volume on the circuit board, so that the requirement that the interior space of the equipment is occupied less can be effectively met, and the aluminum electrolytic capacitor is particularly suitable for being applied to flat equipment; the laser welding loss is small, and the welding is firmer and more stable.

Description

Square aluminum electrolytic capacitor

[ technical field ] A method for producing a semiconductor device

The utility model relates to the field of capacitors, especially, relate to a square aluminum electrolytic capacitor.

[ background ] A method for producing a semiconductor device

The traditional aluminum electrolytic capacitor is a cylindrical energy storage element with an aluminum cylinder as a shell, and in some equipment with small internal space or flat internal space and certain requirement on the capacity of the aluminum electrolytic capacitor, the cylindrical aluminum electrolytic capacitor occupies larger space, and may not meet the requirement that part of equipment pursues less internal space or flat shape.

[ Utility model ] A method for manufacturing a semiconductor device

The utility model aims to solve the problems of the prior aluminum electrolytic capacitor and provide a square aluminum electrolytic capacitor.

The utility model discloses a realize through following technical scheme: the utility model provides a square aluminum electrolytic capacitor, includes square core package, sealed apron, rivet, dog-ear pin, square aluminium system shell, insulating film, square core package top is equipped with sealed apron, sealed apron is last to have two dog-ear pins through two rivet mounting fixings, the rivet end passes sealed apron and is connected with square core package, dog-ear pin passes through the rivet and is connected with square core package, and two dog-ear pins are anodal pin and negative pole pin respectively, square core package is in square aluminium system shell, the border and the sealed apron top surface border sealing connection of square aluminium system shell open end, square aluminium system shell surface covers has the one deck insulating film.

Furthermore, the square core package is formed by winding an aluminum foil into a flat cuboid-shaped core package along two lead-out polar plates and immersing the core package in electrolyte, the aluminum foil is electrolytic paper which is interposed between an anode foil and a cathode foil, the surfaces of the anode foil and the cathode foil are provided with oxidation films, the lead-out polar plates and the aluminum foil are fixed through laser welding, and the top ends of the two lead-out polar plates are respectively fixed with two rivets through laser welding.

Further, sealed apron includes insulation board, aluminium apron, insulating glue film, the insulation board top surface is equipped with the aluminium apron, aluminium apron top surface middle part is equipped with one deck insulating glue film, the insulation board is unanimous with the length and width of aluminium apron, the length and width of insulating glue film is less than the length and width of aluminium apron, and two dog-ear pins are all installed and are fixed on insulating glue film, the border of square aluminium system shell open end passes through laser welding with the border of aluminium apron and fixes.

Furthermore, an explosion-proof hole is formed in the aluminum cover plate of the sealing cover plate, and the explosion-proof hole is located in an area covered by the non-insulating glue layer of the aluminum cover plate.

Further, the rivet comprises a positive rivet and a negative rivet, the top surface of the positive rivet is a smooth surface, and the top surface of the negative rivet is a latticed rough surface.

The beneficial effects of the utility model reside in that: the square aluminum electrolytic capacitor is characterized in that the capacitor is in a flat cuboid shape, the volume capacity of the capacitor is increased by enlarging the transverse surface, and compared with the traditional cylindrical aluminum electrolytic capacitor with the same volume, the vertical height of the square aluminum electrolytic capacitor is lower than that of the cylindrical aluminum electrolytic capacitor; the extraction polar plate and the aluminum foil, the extraction polar plate and the rivet, and the square aluminum shell and the aluminum cover plate are all laser welded, so that the loss of the laser welding mode is small, and the laser welding mode is firmer and more stable.

[ description of the drawings ]

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

reference numerals: 1. a square core package; 11. aluminum foil; 12. leading out the polar plate; 2. sealing the cover plate; 21. an insulating plate; 22. an aluminum cover plate; 23. an insulating glue layer; 24. an explosion-proof hole; 3. riveting; 31. a positive rivet; 32. a negative rivet; 4. a dog-ear pin; 5. a square aluminum housing; 6. an insulating film.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 and 2, a square aluminum electrolytic capacitor comprises a square core package 1, a sealing cover plate 2, rivets 3, angle folding pins 4, a square aluminum shell 5 and an insulating film 6, wherein the sealing cover plate 2 is arranged at the top of the square core package 1, the sealing cover plate 2 is fixedly provided with the two angle folding pins 4 through the two rivets 3, the tail ends of the rivets 3 penetrate through the sealing cover plate 2 and are connected with the square core package 1, the angle folding pins 4 are connected with the square core package 1 through the rivets 3, the two angle folding pins 4 are respectively an anode pin and a cathode pin, the square core package 1 is arranged in the square aluminum shell 5, the edge of the opening end of the square aluminum shell 5 is connected with the edge of the top surface of the sealing cover plate 2 in a sealing manner, and the outer surface of the square aluminum shell 5 is covered with the insulating film 6.

Preferably, the square core package 1 is formed by winding an aluminum foil 11 into a flat cuboid core package along two lead-out polar plates 12 and immersing the core package in electrolyte, the aluminum foil 11 is an anode foil and a cathode foil with oxide films on the surfaces, electrolytic paper is interposed between the anode foil and the cathode foil, the lead-out polar plates 12 and the aluminum foil 11 are fixed through laser welding, and the top ends of the two lead-out polar plates 12 are respectively fixed with the two rivets 3 through laser welding.

Preferably, the sealing cover plate 2 includes an insulating plate 21, an aluminum cover plate 22 and an insulating adhesive layer 23, the top surface of the insulating plate 21 is provided with the aluminum cover plate 22, the middle of the top surface of the aluminum cover plate 22 is provided with the insulating adhesive layer 23, the length and the width of the insulating plate 21 are consistent with those of the aluminum cover plate 22, the length and the width of the insulating adhesive layer 23 are smaller than those of the aluminum cover plate 22, the two bevel pins 4 are fixed on the insulating adhesive layer 23, and the edge of the opening end of the square aluminum shell 5 is fixed with the edge of the aluminum cover plate 22 through laser welding.

Preferably, the aluminum cover plate 22 of the sealing cover plate 2 is provided with an explosion-proof hole 24, and the explosion-proof hole 24 is located in an area which is not covered by the insulating glue layer 23 of the aluminum cover plate 22.

Preferably, the rivet 3 comprises a positive rivet 31 and a negative rivet 32, wherein the top surface of the positive rivet 31 is a smooth surface, and the top surface of the negative rivet 32 is a grid-shaped rough surface.

Based on the disclosure and teaching of the above description, those skilled in the art can also make appropriate changes and modifications to the above embodiments, therefore, the present invention is not limited to the above disclosed and described embodiments, and some modifications and changes of the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, such terms are used for convenience of description and are not to be construed as limiting the invention in any way.

Claims

1. A square aluminum electrolytic capacitor is characterized in that: including square core package, sealed apron, rivet, dog-ear pin, square aluminium system shell, insulating film, square core package top is equipped with sealed apron, sealed apron is last to have two dog-ear pins through two fix with rivets, the rivet end passes sealed apron and is connected with square core package, the dog-ear pin passes through the rivet and is connected with square core package, and two dog-ear pins are anodal pin and negative pole pin respectively, square core package is in square aluminium system shell, the border and the sealed apron top surface border sealing connection of square aluminium system shell open end, square aluminium system shell surface covers there is the one deck insulating film.

2. The square aluminum electrolytic capacitor according to claim 1, characterized in that: the square core package is formed by winding aluminum foil into a flat cuboid-shaped core package along two lead-out polar plates and immersing the core package in electrolyte, the aluminum foil is electrolytic paper which is inserted between an anode foil and a cathode foil, the surfaces of the anode foil and the cathode foil are provided with oxidation films, the lead-out polar plates and the aluminum foil are fixed through laser welding, and the top ends of the two lead-out polar plates are respectively fixed with two rivets through laser welding.

3. The square aluminum electrolytic capacitor according to claim 1, characterized in that: sealed apron includes insulation board, aluminium apron, insulating glue film, the insulation board top surface is equipped with the aluminium apron, aluminium apron top surface middle part is equipped with the insulating glue film of one deck, the insulation board is unanimous with the length width of aluminium apron, the length width of insulating glue film is less than the length width of aluminium apron, and two dog-ear pins are all installed and are fixed on the insulating glue film, the border of square aluminium system shell open end passes through laser welding with the border of aluminium apron and fixes.

4. The square aluminum electrolytic capacitor according to claim 3, characterized in that: and an explosion-proof hole is formed in the aluminum cover plate of the sealing cover plate and is positioned in the area covered by the non-insulating glue layer of the aluminum cover plate.

5. The square aluminum electrolytic capacitor according to claim 1, characterized in that: the rivet comprises a positive rivet and a negative rivet, wherein the top surface of the positive rivet is a smooth surface, and the top surface of the negative rivet is a grid-shaped rough surface.