CN215451185U - Aluminum electrolytic capacitor cover plate and aluminum electrolytic capacitor - Google Patents

Abstract

The utility model discloses an aluminum electrolytic capacitor cover plate and an aluminum electrolytic capacitor, comprising a top cover plate and a bottom cover plate; the top cover plate is a packaging cover plate and is used for packaging and sealing the core package in an aluminum shell of the aluminum electrolytic capacitor; the bottom cover plate is a connecting cover plate, a threaded sleeve structure is arranged on the bottom cover plate, and the bottom cover plate is connected with another aluminum electrolytic capacitor monomer through the threaded sleeve structure so as to expand the aluminum electrolytic capacitor. The aluminum electrolytic capacitor cover plate is provided with the top cover plate and the bottom cover plate, and the extension of the aluminum electrolytic capacitor can be conveniently realized through the bottom cover plate; and the integrated installation of the aluminum electrolytic capacitor is convenient.

Description

Aluminum electrolytic capacitor cover plate and aluminum electrolytic capacitor

Technical Field

The utility model belongs to the technical field of capacitors, and particularly relates to an aluminum electrolytic capacitor cover plate and an aluminum electrolytic capacitor.

Background

With the rapid development of consumer electronics, while the aluminum electrolytic capacitor is steadily increasing in the consumer electronics field, its application field is expanded in many new fields such as energy-saving lamps, frequency converters, new energy sources and the like with the structure transformation and technical progress, and the application range is wider and wider. The basic role of aluminum electrolytic capacitors in electronic circuits is generally summarized as: the energy-saving device has the advantages of being capable of conducting alternating current and blocking direct current, having the functions of filtering, bypassing, coupling and rapid charging and discharging, and having the characteristics of small size, large stored electricity and high cost performance. With the progress of modern technology and the continuous improvement of capacitor performance, electrolytic capacitors have been widely used in consumer electronics, communication products, computers and peripheral products, new energy, automation control, automotive industry, photovoltaic products, high-speed railways, aviation and military equipment, and the like.

The aluminum electrolytic capacitor has a great demand for large capacitance, and at present, a stacked solid electrolytic capacitor is generally formed by stacking and expanding a plurality of capacitor units, wherein each capacitor unit comprises an anode portion, a cathode portion and an insulating portion, and the insulating portion electrically insulates the anode portion and the cathode portion from each other, thereby forming a large-capacity electrolytic capacitor.

However, the above prior art large-capacity capacitor requires a lead frame, each capacitor unit includes an insulating portion, the structure of the capacitor is complicated, and the integration is not easy. Therefore, in order to solve the problems of the prior art, it is necessary to develop and research a large-capacity aluminum electrolytic capacitor with a simple structure and easy integration.

The above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an aluminum electrolytic capacitor cover plate and an aluminum electrolytic capacitor, which solves at least one of the above problems.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:

an aluminum electrolytic capacitor cover plate comprises a top cover plate and a bottom cover plate; the top cover plate is a packaging cover plate and is used for packaging and sealing the core package in an aluminum shell of the aluminum electrolytic capacitor; the bottom cover plate is a connecting cover plate, a threaded sleeve structure is arranged on the bottom cover plate, and the bottom cover plate is connected with another aluminum electrolytic capacitor monomer through the threaded sleeve structure so as to expand the aluminum electrolytic capacitor.

In some embodiments, the top closure comprises a closure body, an outer sealing rubber ring, an inner sealing rubber ring, and an insulating sleeve; wherein, the apron main part is provided with hollow through-hole.

In some embodiments, the cover plate main body includes a bottom surface contacting the core pack and a top surface contacting the outside, wherein a ring of annular stopping portion is disposed on the surface of the circular body between the top surface and the bottom surface.

In some embodiments, a stopping part is arranged in the hollow through hole, and the inner sealing rubber ring is placed at the stopping part; when the top cover plate is installed at one end of the aluminum shell, one end of the aluminum shell is turned inwards to buckle the outer sealing rubber ring, so that the opening at one end of the aluminum shell is sealed.

In some embodiments, the bottom cap plate comprises a bottom cap plate body, an inner sealing rubber gasket, an outer sealing rubber gasket, and an inner insulating ring; the bottom cover plate main body is provided with a hollow through hole structure and comprises a circular base and a sleeve protruding out of the circular base.

In some embodiments, the hollow through-hole structure includes a threaded hole formed inside the sleeve and first and second through-holes coaxially penetrating the threaded hole.

In some embodiments, the inner diameters of the threaded hole and the first and second through holes are different from each other, so that a first stopper portion and a second stopper portion are formed in the hollow through hole structure.

In some embodiments, the sleeve outer diameter of the bottom cover plate body is smaller than the outer diameter of the base, forming an annular mesa on the base.

In some embodiments, the outer diameter of the inner gasket is the same as the inner diameter of the first through hole to place the inner gasket at the location of the second stop; the inner diameter of the outer sealing rubber ring gasket is the same as the outer diameter of the sleeve.

The scheme of another embodiment of the utility model is as follows:

an aluminum electrolytic capacitor comprises a cover plate, an aluminum shell matched with the cover plate, a core package arranged in the aluminum shell and a hollow tube, wherein the cover plate is arranged in the scheme of any embodiment; the aluminum shell is provided with a through hole penetrating through two ends, aluminum shell openings with the same size are formed in the two ends of the aluminum shell through the through hole, and the top cover plate and the bottom cover plate are respectively installed at the aluminum shell openings at the two ends of the aluminum shell.

The technical scheme of the utility model has the beneficial effects that:

compared with the prior art, the aluminum electrolytic capacitor cover plate has the advantages that the top cover plate and the bottom cover plate are arranged, and the extension of the aluminum electrolytic capacitor can be conveniently realized through the bottom cover plate; and the integrated installation of the aluminum electrolytic capacitor is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of an aluminum electrolytic capacitor that is easily expanded according to an embodiment of the present invention;

FIG. 2 is an exploded view of an aluminum electrolytic capacitor that facilitates expansion of one embodiment of the present invention;

FIG. 3 is another exploded perspective view of an aluminum electrolytic capacitor that facilitates expansion in accordance with an embodiment of the present invention;

FIG. 4 is a partially exploded view of an aluminum electrolytic capacitor that facilitates expansion of one embodiment of the present invention;

FIG. 5 is an exploded view of a first cover plate of an aluminum electrolytic capacitor cover plate in accordance with an embodiment of the present invention;

FIG. 6 is another angular view of FIG. 5;

FIG. 7 is an exploded view of a second cover plate of the cover plate of an aluminum electrolytic capacitor according to an embodiment of the present invention;

FIG. 8 is another angular view of FIG. 7;

FIG. 9 is a diagram of the mating of a first cover plate and a second cover plate of an aluminum electrolytic capacitor cover plate according to an embodiment of the present invention;

FIG. 10 is a pictorial representation of an aluminum electrolytic capacitor with one embodiment of the present invention being conveniently expanded, taken along an axis;

FIG. 11 is an expanded connection diagram of an aluminum electrolytic capacitor that facilitates expansion according to an embodiment of the present invention;

FIG. 12 is a view in partial cutaway of FIG. 11;

FIG. 13 is a diagrammatic view in partial cutaway of the aluminum electrolytic capacitor of FIG. 1;

FIG. 14 is a partially cut-away illustration of the other end of the aluminum electrolytic capacitor of FIG. 1;

FIG. 15 is a schematic view of an aluminum electrolytic capacitor cover plate according to another embodiment of the present invention;

FIG. 16 is an exploded top cover plate illustration of another embodiment of an aluminum electrolytic capacitor cover plate of the present invention;

FIG. 17 is an exploded view of the bottom cover plate of another embodiment of the aluminum electrolytic capacitor cover plate of the present invention;

FIG. 18 is an exploded view of an aluminum electrolytic capacitor according to another embodiment of the present invention;

FIG. 19 is a perspective view of an aluminum electrolytic capacitor according to another embodiment of the present invention;

FIG. 20 is a schematic diagram of an integrated installation of the aluminum electrolytic capacitor of the embodiment of FIG. 1 to facilitate expansion;

fig. 21 is a schematic view of another integrated mounting scheme for the aluminum electrolytic capacitor of the embodiment of fig. 1 that facilitates expansion.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer and more obvious, so that those skilled in the art can better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. The connection may be for fixation or for circuit connection.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be in any way limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, "plurality" means two or more, and the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 5 to 11, an aluminum electrolytic capacitor cover plate is provided as an embodiment of the present invention, including a first cover plate 40 and a second cover plate 50; the first cover plate 40 is provided with a thread structure, and the aluminum electrolytic capacitor 100 is mounted on the aluminum electrolytic capacitor mounting bracket through the thread structure or the aluminum electrolytic capacitor and another aluminum electrolytic capacitor are connected and assembled together through the thread structure.

Referring to fig. 1-4, 13 and 14, an aluminum electrolytic capacitor 100 using a capacitor cover plate according to an embodiment of the present invention is shown, and the aluminum electrolytic capacitor 100 includes an aluminum case 10 matching with the cover plate, a core package 20 installed in the aluminum case, and a hollow tube 30.

The aluminum shell 10 is provided with a through hole 101 penetrating through two ends, aluminum shell openings with the same size are formed at two ends of the aluminum shell through the through hole 101, wherein a waist structure 102 is arranged at a position, close to the aluminum shell openings at the two ends, of the outer surface of the aluminum shell, so as to fix the core cladding 20; both ends of the aluminum can 10 are respectively crimped to fix the first cover plate 40 and the second cover plate 50.

The core package 20 comprises an electrolyte paper layer, an anode foil and a cathode foil; the electrolyte paper layer, the anode foil and the cathode foil are configured to form a core package 20 with a through hole 201 penetrating through the center after being wound. Two ends of the core package 20 are respectively provided with a core package fastening structure 202 for fastening the wound core package 20 to prevent the electrolyte paper layer, the anode foil and the cathode foil from being scattered.

The hollow tube 30 includes a middle section 301, annular groove sections 302 respectively disposed at two ends of the middle section 301, and crimping structures 303 disposed at two ends of the hollow tube. The middle section 301 is installed in the through hole 201 of the core package 20, and the length of the middle section 301 is equal to that of the through hole 201 of the core package 20; the annular groove section 302 and the crimping structure protrude from two ends of the core package 20. The crimping structures at the two ends of the hollow tube 30 respectively extend into the first cover plate 40 and the second cover plate 50 to be fixedly connected with the first cover plate 40 and the second cover plate 50, so that the core package 20 and the first cover plate 40 and the second cover plate 50 are fixedly connected together. It can be understood that, the two ends of the hollow tube 30 are circular tube openings, the core package is wound on the middle section 301 of the hollow tube, the first cover plate and the second cover plate are installed, and the circular tube opening at the end of the hollow tube is outwards curled and sealed, so that the first cover plate and the second cover plate can be connected through the hollow tube, and the core package is tightly pressed and fixed between the first cover plate and the second cover plate.

Referring to fig. 5 and 6, in some embodiments, the first cover plate 40 includes a cover plate main body 401, an outer sealing ring 402, an inner sealing ring 403, and an insulating sleeve 404; the cover plate main body 401 is made of a metal material, and in the embodiment of the present invention, the cover plate main body is made of aluminum; the cover plate main body 401 is arranged into a hollow structure and comprises a circular body 4010 matched with the core bag 20, a threaded column 4011 protruding out of the circular body and an annular table 4012 arranged between the threaded column 4011 and the circular body 4010; insulating sleeve 404 includes annular accommodation space 4041 and in insulating tube 4042 of insulating sleeve 404 center projection, annular accommodation space 4041 is used for placing the ring shape body 4010 of apron main part 401, insulating tube 4042 cooperatees with the annular groove section 302 of hollow tube 30 to it is insulating to realize apron main part 401. Specifically, the hollow structure comprises a large through hole 4014 and a small through hole 4013 which have unequal hole diameters, an annular stop part 4015 is formed at the joint of the large through hole 4014 and the small through hole 4013, the inner sealing ring 403 is placed on the annular stop part 4015, and the outer diameter of the inner sealing ring 403 is matched with the inner diameter of an inner hole of the threaded column 403; the size of the outer sealing ring 402 is consistent with that of the annular body of the cover plate main body, and the inner diameter of the outer sealing ring is matched with the outer diameter of the annular table 4012, so that the outer sealing ring is sleeved on the annular table and keeps close contact fit with the circular body, when the first cover plate 40 is installed at one end of the aluminum shell 10, one end of the aluminum shell 10 is turned inwards to crimp the outer sealing ring 402, and the first cover plate 40 is sealed at one end of the aluminum shell 10. The length of the small through hole 4013 is equal to that of the insulating tube 4042, and the aperture of the small through hole is matched with the outer diameter of the insulating tube 4042; the length of the insulating pipe 4042 is equal to the length of the annular groove section 302 of the hollow pipe, and the aperture of the insulating pipe 4042 is matched with the outer diameter of the annular groove section 302 of the hollow pipe 30, so that after the first cover plate 40 is installed at the end of the hollow pipe 30, the annular groove section 302 of the hollow pipe 30 is tightly matched with the first cover plate 40, and the end of the hollow pipe is turned outwards to buckle the inner sealing ring 403 of the first cover plate 40, so that the cover plate and the hollow pipe are stably connected together; and the insulation between the cover plate and the hollow pipe is realized through the insulating sleeve.

Referring to fig. 7 and 8, the second cap 50 includes a second cap body 501, an inner gasket 502, an outer gasket 503, and an inner insulating ring 504. The second cover plate main body 501 is provided with a hollow through hole structure, and the second cover plate main body 501 comprises a circular base 5010 and a sleeve 5011 protruding out of the circular base; the hollow through hole structure comprises a threaded hole 5012 formed in the sleeve 5011, and a first through hole 5013 and a second through hole 5014 which are coaxially communicated with the threaded hole 5012; the threaded holes 5012 are matched with the threaded posts 4011 on the cover body 401 of the first cover plate 40, that is, the outer diameter of the threaded posts 4011 on the cover body 401 of the first cover plate 40 is matched with the inner diameter of the threaded holes 5012 of the second cover plate body 501, so that the threaded posts 4011 on the cover body 401 of the first cover plate 40 can be screwed into the sleeve 5011 of the second cover plate body 501. The threaded hole 5012 and the first and second through holes 5013 and 5014 have different inner diameters, so that a first stopper 5015 and a second stopper 5016 are formed in the hollow through hole structure. The sleeve 5011 of the second cover body 501 has an outer diameter smaller than the outer diameter of the base 5010, so that an annular mesa is formed on the base 5010. The base 5010 is provided with ribs 5017 on the bottom surface thereof so that when the second cover 50 is mounted to one end of the aluminum case 10, a certain elastic force is generated by the ribs 5017 to make the cover mounting more firm. The outer diameter of the inner gasket 502 is the same as the inner diameter of the first through hole 5013, so as to place the inner gasket 502 at the location of the second stopper 5016; the inner diameter of the outer seal ring pad 503 is the same as the outer diameter of the sleeve 5011, so that the outer seal ring pad 503 is sleeved on the surface of the sleeve and placed on the annular table of the base 5010. The inner diameter of the second through hole 5014 is matched with the outer diameter of the annular groove section of the hollow pipe, and the inner diameter of the inner insulating ring is matched with the outer diameter of the annular groove section of the hollow pipe, so that the inner insulating ring is sleeved at one end, close to the core bag, of the annular groove section of the hollow pipe in a replacement mode, and insulation of the second cover plate is achieved. So designed, after the second cover plate 50 is installed at the other end of the hollow tube 30, the annular groove section 302 of the hollow tube 30 is tightly matched with the inner insulating ring 504, and the end of the hollow tube 30 is curled outwards to buckle the inner sealing gasket 502 of the second cover plate 50, so that the cover plate and the hollow tube are stably connected together. When the second cover plate 50 is mounted to the other end of the aluminum case 10, the other end of the aluminum case 10 is crimped inward to fasten the outer gasket, thereby sealing the second cover plate 50 to the other end of the aluminum case.

Referring to fig. 1 to 12, as an embodiment of the present invention, after the core pack 20 is wound, the hollow tube 30 is inserted into the through hole 201 of the core pack, the middle section of the hollow tube 30 is placed in the through hole of the core pack, the first cover plate 40 and the second cover plate 50 are respectively mounted at two ends of the hollow tube, wherein the annular groove sections at two ends of the hollow tube 30 are respectively matched with the small through hole 4013 of the main body portion 401 of the first cover plate 40 and the second through hole 5014 of the main body portion of the second cover plate 50, and the ends of the hollow tube are respectively curled outwards to be fastened with the inner sealing ring 403 of the first cover plate and the inner sealing ring pad 502 of the second cover plate, so as to fix the core pack 20 between the first cover plate and the second cover plate; installing the aluminum shell 10, respectively girdling the two ends of the aluminum shell 10 to fix the core package, and then respectively inward curling the two ends of the aluminum shell to buckle the outer sealing ring 402 of the first cover plate and the outer sealing ring pad 503 of the second cover plate, thereby completing the packaging of the aluminum electrolytic appliance container. The first cover plate 40 is arranged at one end of the aluminum electrolytic capacitor, the threaded column 4011 of the first cover plate protrudes out of the surface of the aluminum shell, the second cover plate 50 is arranged at the other end of the aluminum electrolytic capacitor, and the threaded sleeve 5012 of the second cover plate protrudes out of the surface of the aluminum shell. The aluminum electrolytic capacitor of the present invention is easy to expand and easy to integrate, and is illustrated in fig. 9 and 10, which illustrate two aluminum electrolytic capacitors, wherein a threaded sleeve 5011 of a second cover plate 50 of a first aluminum electrolytic capacitor is matched with a threaded post 4011 of a first cover plate 40 of a second aluminum electrolytic capacitor, and the threaded post 4011 is screwed into a threaded hole 5012 of the threaded sleeve 5011, thereby connecting the two aluminum electrolytic capacitors together. The embodiment of the utility model is described by taking the connection of two aluminum electrolytic capacitors as an example, and the connection of a plurality of capacitors is similar, so that the description is omitted. In some embodiments, the first cover plate is a positive terminal and the second cover plate is a negative terminal.

The main body of the aluminum electrolytic capacitor is of a ring pipe structure, the positive terminal and the negative terminal of the capacitor are respectively of a screw structure and a nut structure, two capacitors of the same type can be directly screwed, butted and combined together through the positive electrode and the negative electrode of each other to form a series structure, the number of the capacitors with limited series connection quantity can be limited within the withstand voltage range of a capacitor terminal insulator, but the voltage-sharing balance management of capacitor monomers is required when a plurality of capacitors are connected in series, and the aluminum electrolytic capacitor can better replace the charge and discharge work of power storage equipment such as a super capacitor, a lithium battery and the like through larger-scale and series connection management in the occasion of a high-energy-efficiency compact power energy stack.

Referring to fig. 15 to 17, as another embodiment of the aluminum electrolytic capacitor cap plate of the present invention, the cap plate includes a top cap plate 60 and a bottom cap plate 70; the top cover plate 60 is a package cover plate, and is used for packaging and sealing the core package in the aluminum shell of the aluminum electrolytic capacitor; the bottom cover plate 70 is a connecting cover plate, a threaded sleeve structure is arranged on the bottom cover plate, and the threaded sleeve structure is connected with another aluminum electrolytic capacitor monomer to expand the aluminum electrolytic capacitor, so that the large-capacity aluminum electrolytic capacitor can be obtained.

Referring to fig. 18 and 19, the aluminum electrolytic capacitor includes an aluminum case 10 engaged with a cover plate, a core pack 20 installed in the aluminum case, and a hollow tube 30.

The aluminum shell 10 is provided with a through hole 101 penetrating through two ends, the through hole 101 forms aluminum shell openings with the same size at two ends of the aluminum shell 10, wherein a waist structure 102 is arranged at a position, close to the aluminum shell openings at two ends, of the outer surface of the aluminum shell 10, so as to fix the core package 20; after the top cover plate 60 and the bottom cover plate 70 are installed, the aluminum shell openings at the two ends are respectively curled, so that the top cover plate and the bottom cover plate are sealed at the aluminum shell openings at the two ends, and the core package is sealed between the aluminum shell and the hollow tube.

The core package 20 comprises an electrolyte paper layer, an anode foil and a cathode foil; the electrolyte paper layer, the anode foil and the cathode foil are configured to form a core package with a through hole 201 penetrating through the center after being wound. Two ends of the core package 20 are respectively provided with a core package fastening structure 202 for fastening the wound core package to prevent the electrolyte paper layer, the anode foil and the cathode foil from being scattered.

The hollow tube 30 includes a middle section 301, annular groove sections 302 respectively disposed at two ends of the middle section 301, and crimping structures 303 disposed at two ends of the hollow tube. The middle section 301 is installed in the through hole 201 of the core package, and the annular groove section 302 and the crimping structure protrude out of two ends of the core package. The curling structures at the two ends of the hollow tube 30 extend into the top cover plate 60 and the bottom cover plate 70 respectively to be fixedly connected with the top cover plate 60 and the bottom cover plate 70, so that the core package 30 and the top cover plate 60 and the bottom cover plate 70 are fixedly connected together. It can be understood that the two ends of the hollow tube are circular tube openings, the core package is wound around the middle section of the hollow tube, the top cover plate and the second cover plate are installed, the circular tube opening at the end of the hollow tube is turned outwards to be sealed, and therefore the top cover plate 60 and the bottom cover plate 70 can be connected through the hollow tube, and the core package 20 is tightly pressed and fixed between the top cover plate and the bottom cover plate.

Referring to fig. 16 and 17, in some embodiments, the top cap 60 includes a cap body 601, an outer sealing rubber ring 602, an inner sealing rubber ring 603, and an insulating sleeve 604; the cover plate main body 601 is made of a metal material, and in the embodiment of the present invention, the cover plate main body 601 is made of aluminum; the cover plate main body 601 is a hollow through hole, the cover plate main body 601 comprises a bottom surface 6010 contained in the insulating sleeve 604 and a top surface 6011 contacting with the outside, wherein a circle of annular stopping portion 6012 is arranged on the surface of the circular body between the top surface and the bottom surface, when the cover plate main body is installed, the annular stopping portion stops at a waist restraining position at one end of the aluminum shell 10, and the outer sealing rubber ring 602 is placed on the outer surface of the stopping portion. A stopping part 6013 is arranged in the hollow through hole, and the inner sealing rubber ring 603 is placed on the stopping part 6013. When the top cover plate 60 is mounted on one end of the aluminum shell 10, the one end of the aluminum shell 10 is crimped inwards to buckle the outer sealing rubber ring 602, so that the top cover plate is sealed on the one end of the aluminum shell. Insulation support is provided with insulating tube 6041, insulating tube 6041 cooperatees with hollow tube 30's annular groove section 302, the length of hollow through-hole with the length of insulating tube equals, its aperture and insulating tube's external diameter looks adaptation, the external diameter of insulating tube with hollow tube 30's annular groove section 302's external diameter looks adaptation, so design, install top apron 60 in the hollow tube after terminal, the annular groove section and the insulating tube of hollow tube closely cooperate, and through outwards carrying out the turn-up with the hollow tube end and detaining the interior sealed rubber seal ring of top apron to make apron and hollow tube link together firmly, and realize the top apron and the insulation of hollow tube.

Referring to fig. 17, the bottom cap plate 70 includes a bottom cap plate main body 701, an inner sealing rubber gasket 702, an outer sealing rubber gasket 703, and an inner insulating ring 704. The bottom cover plate main body 701 is provided with a hollow through hole structure, and the bottom cover plate main body 701 comprises a circular base 7010 and a sleeve 7011 protruding from the circular base 7010; the hollow through hole structure comprises a threaded hole 7012 formed inside the sleeve 7011, and a first through hole and a second through hole which are coaxially communicated with the threaded hole 7012; the threaded hole 7012 is adapted to the threaded post 4011 on the cover main body of the first cover 40 in the embodiments of fig. 1 to 10, that is, the inner diameter of the threaded hole on the cover main body 701 of the bottom cover 70 is adapted to the outer diameter of the threaded post 4011 on the cover main body 401 of the first cover 40, so that the threaded post 4011 of the cover main body 401 of the first cover 40 can be screwed into the sleeve 7011 of the bottom cover main body. The inner diameters of the threaded hole and the first through hole and the second through hole are different from each other, so that a first stopping portion 7013 and a second stopping portion 7014 are formed in the hollow through hole structure. The outer diameter of the sleeve of the bottom cover plate body is smaller than the outer diameter of the base, forming an annular table top 7015 on the base. The bottom surface of the base is provided with a rib 7016, so that when the bottom cover is mounted on one end of the aluminum shell, a certain elastic force is generated by the rib to make the cover mounted more firmly. The outer diameter of the inner gasket is the same as the inner diameter of the second through hole to place the inner gasket 702 at the first stop location 7013; the inner diameter of the outer sealing rubber ring pad 703 is the same as the outer diameter of the casing, so that the outer sealing rubber ring pad 703 is sleeved on the surface of the casing 7011 and placed on the annular table 7015 of the base. The internal diameter of first through-hole with the external diameter looks adaptation of hollow tube annular groove section, the internal diameter of interior insulating ring and the external diameter looks adaptation of the annular groove section of hollow tube to make the annular groove section of interior insulating sheath locating hollow tube trade be close to the one end of core package, thereby realize the insulation of bottom apron. So design, with the bottom apron install behind the hollow tube other end, the annular groove section of hollow tube with interior insulating ring 704 closely cooperates, and through outwards carrying out the turn-up with the hollow tube end and detaining the interior sealing rubber circle pad of bottom apron to make apron and hollow tube link together firmly. When the bottom cover plate is arranged at the other end of the aluminum shell, the other end of the aluminum shell is turned inwards to buckle the outer sealing rubber ring gasket, so that the bottom cover plate is sealed at the other end of the aluminum shell. In some embodiments, the top cover plate is a positive terminal and the bottom cover plate is a negative terminal.

Specifically, after the core package 20 is wound, the hollow tube 30 is inserted into the through hole of the core package, the middle section of the hollow tube is placed in the through hole of the core package, the top cover plate 60 and the bottom cover plate 70 are respectively installed at two ends of the hollow tube, wherein the annular groove sections at the two ends of the hollow tube are respectively matched with the small through hole of the main body part of the top cover plate and the second through hole of the main body part of the bottom cover plate, and the tail end of the hollow tube is respectively curled outwards to clamp the inner sealing rubber ring of the top cover plate and the inner sealing rubber ring pad of the bottom cover plate, so that the core package is fixed between the top cover plate and the bottom cover plate; and installing an aluminum shell, respectively girdling the two ends of the aluminum shell, fixing the core cladding, and then respectively inwards curling and clamping the openings of the aluminum shell at the two ends of the aluminum shell to the top cover plate to obtain an outer sealing rubber ring and an outer sealing rubber ring pad of the bottom cover plate, thereby finishing the packaging of the aluminum electrolytic appliance container. The aluminum electrolytic capacitor comprises an aluminum shell, a threaded column, a top cover plate, a bottom cover plate and a threaded sleeve, wherein the top cover plate is arranged at one end of the aluminum electrolytic capacitor, the threaded column of the top cover plate protrudes out of the surface of the aluminum shell, the bottom cover plate is arranged at the other end of the aluminum electrolytic capacitor, and the threaded sleeve of the bottom cover plate protrudes out of the surface of the aluminum shell. The aluminum electrolytic capacitor of the utility model is easy to expand and easy to integrate and install, as shown in fig. 20 and 21, in fig. 20, a plurality of aluminum electrolytic capacitor monomers 100 can be installed together through two installation polar plates 200, thereby obtaining a large-capacity aluminum electrolytic capacitor; in fig. 21, a plurality of aluminum electrolytic capacitor cells 100 can be mounted together by a plurality of mounting plates 200, thereby obtaining a large-capacity aluminum electrolytic capacitor; moreover, the design is convenient for the integrated installation of the aluminum electrolytic capacitor.

It should be noted that the aluminum electrolytic capacitors in the embodiments of fig. 1 to 14 and the aluminum electrolytic capacitors in fig. 15 to 18 may also be integrally mounted together to expand the aluminum electrolytic capacitor cells, and specific expansion refers to the description in the embodiments of fig. 1 to 14, and is not described herein again.

It is to be understood that the foregoing is a more detailed description of the utility model as it relates to specific/preferred embodiments and that no limitation to the specific embodiments is intended as being implied by the limitation presented herein. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the utility model, and these substitutions and modifications should be considered to fall within the scope of the present patent. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model.

In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the utility model as defined by the appended claims.

Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. One of ordinary skill in the art will readily appreciate that the above-disclosed, presently existing or later to be developed, processes, machines, manufacture, compositions of matter, means, methods, or steps, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.

Claims (10)

1. An aluminum electrolytic capacitor cover plate is characterized in that: comprises a top cover plate and a bottom cover plate; the top cover plate is a packaging cover plate and is used for packaging and sealing the core package in an aluminum shell of the aluminum electrolytic capacitor; the bottom cover plate is a connecting cover plate, a threaded sleeve structure is arranged on the bottom cover plate, and the bottom cover plate is connected with another aluminum electrolytic capacitor monomer through the threaded sleeve structure so as to expand the aluminum electrolytic capacitor.

2. The aluminum electrolytic capacitor cover plate of claim 1, wherein: the top cover plate comprises a cover plate main body, an outer sealing rubber ring, an inner sealing rubber ring and an insulating sleeve; wherein, the apron main part is provided with hollow through-hole.

3. The aluminum electrolytic capacitor cover plate of claim 2, wherein: the cover plate main body comprises a bottom surface and a top surface, wherein the bottom surface is in contact with the core bag, the top surface is in contact with the outside, and a circle of annular stopping portion is arranged between the top surface and the bottom surface on the surface of the round body.

4. The aluminum electrolytic capacitor cover plate of claim 3, wherein: a stopping part is arranged in the hollow through hole, and the inner sealing rubber ring is placed on the stopping part; when the top cover plate is installed at one end of the aluminum shell, one end of the aluminum shell is turned inwards to buckle the outer sealing rubber ring, so that the opening at one end of the aluminum shell is sealed.

5. The aluminum electrolytic capacitor cover plate of claim 4, wherein: the bottom cover plate comprises a bottom cover plate main body, an inner sealing rubber ring gasket, an outer sealing rubber ring gasket and an inner insulating ring; the bottom cover plate main body is provided with a hollow through hole structure and comprises a circular base and a sleeve protruding out of the circular base.

6. The aluminum electrolytic capacitor cover plate of claim 5, wherein: the hollow through hole structure comprises a threaded hole formed in the sleeve, and a first through hole and a second through hole which are coaxially communicated with the threaded hole.

7. The aluminum electrolytic capacitor cover plate of claim 6, wherein: the inner diameters of the threaded hole and the first through hole and the second through hole are different from each other, so that a first stopping portion and a second stopping portion are formed in the hollow through hole structure.

8. The aluminum electrolytic capacitor cover plate of claim 7, wherein: the outer diameter of the sleeve of the bottom cover plate main body is smaller than that of the base, so that an annular table top is formed on the base.

9. The aluminum electrolytic capacitor cover plate of claim 8, wherein: the outer diameter of the inner sealing rubber gasket is the same as the inner diameter of the first through hole, so that the inner sealing rubber gasket is placed at the position of the second stopping part; the inner diameter of the outer sealing rubber ring gasket is the same as the outer diameter of the sleeve.

10. An aluminum electrolytic capacitor, characterized in that: comprises the cover plate of any one of claims 1-9, an aluminum shell matched with the cover plate, a core bag arranged in the aluminum shell, and a hollow pipe; the aluminum shell is provided with a through hole penetrating through two ends, aluminum shell openings with the same size are formed in the two ends of the aluminum shell through the through hole, and the top cover plate and the bottom cover plate are respectively installed at the aluminum shell openings at the two ends of the aluminum shell.

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