CN217740353U

CN217740353U - Aluminum electrolytic capacitor with novel lead-out structure

Info

Publication number: CN217740353U
Application number: CN202221488642.7U
Authority: CN
Inventors: 许雷冰; 温建龙; 王静
Original assignee: Hunan Aihua Group Co Ltd
Current assignee: Hunan Aihua Group Co Ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-11-04
Anticipated expiration: 2032-06-15

Abstract

An aluminum electrolytic capacitor with a novel lead-out structure comprises a shell and a core package, wherein the core package is hermetically arranged in the shell through a sealing component; the core bag is formed by winding an anode foil, electrolytic paper and a cathode foil, wherein the anode foil and the cathode foil respectively extend out of the upper end and the lower end of the core bag; the sealing assembly comprises an insulating sealing cover and an anode current collector, and the insulating sealing cover, the shell and the anode current collector are sealed through thermal curing glue or ultraviolet curing glue; the anode foil at the upper end of the core bag and the cathode foil at the lower end of the core bag are respectively in electrical contact with the anode current collector and the bottom of the shell. The utility model discloses in, through sealed between insulating sealed lid and shell and the positive pole mass flow body, it is sealed effectual to the thickness of insulating sealed lid and positive pole mass flow body and the thickness that can be than traditional rubber buffer are little 1-5mm, can make the more positive pole paper tinsel of the inside dress of shell, and the volume ratio promotes.

Description

Aluminum electrolytic capacitor with novel lead-out structure

Technical Field

The utility model relates to an aluminum electrolytic capacitor, in particular to an aluminum electrolytic capacitor with a novel leading-out structure.

Background

The traditional aluminum electrolytic capacitor has the structure that the core package is sealed in the shell through the rubber plug, but the sealing effect is not ideal when the core package is sealed through the rubber plug, and most of the capacitor failures are dry failures caused by low sealing effect of the rubber plug. In actual production, because the shell at the position of the rubber plug needs to be sealed at the waist, the thickness of the rubber plug is larger, so that the prepared aluminum electrolytic capacitor is larger in length and does not accord with the development trend of miniaturization of the current capacitor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide an aluminum electrolytic capacitor who has novel extraction structure that sealed effectual to the volumetric capacity ratio can obtain promoting.

In order to solve the technical problem, the utility model provides a technical scheme does: an aluminum electrolytic capacitor with a novel lead-out structure comprises a shell and a core package, wherein the core package is hermetically arranged in the shell through a sealing assembly; the core bag is formed by winding an anode foil, electrolytic paper and a cathode foil, wherein the anode foil and the cathode foil respectively extend out of the upper end and the lower end of the core bag; the sealing assembly comprises an insulating sealing cover and an anode current collector, and the insulating sealing cover, the shell and the anode current collector are sealed through heat curing glue or ultraviolet curing glue; and the anode foil at the upper end of the core package and the cathode foil at the lower end of the core package are respectively in electrical contact with the anode current collector and the bottom of the shell.

Preferably, the anode current collector is provided with an anode connecting column, and the insulating sealing cover is provided with a through hole through which the anode connecting column passes; and the bottom of the shell is provided with a cathode connecting column.

In the above aluminum electrolytic capacitor with the novel lead-out structure, preferably, the bottom of the anode connecting column is provided with a connecting column connected with the insulating sealing cover; the through hole on the insulating sealing cover is matched with the connecting column, and the connecting column is clamped in the through hole on the insulating sealing cover.

Preferably, the inner side of the insulating sealing cover is provided with a clamped convex block or a clamped convex ring connected with the anode current collector, and the convex block or the clamped convex ring is arranged on the inner side of the bottom of the insulating sealing cover.

In the above aluminum electrolytic capacitor with the novel lead-out structure, preferably, the lengths of the anode foil and the cathode foil extending out of the upper end and the lower section of the core package are 0.1mm-2mm.

In the aluminum electrolytic capacitor with the novel lead-out structure, preferably, the outer side of the core bag is wound with at least one layer of electrolytic paper or cathode foil.

Compared with the prior art, the utility model has the advantages of: the utility model discloses in, through sealed between insulating sealed lid and shell and the positive pole mass flow body, it is sealed effectual to the thickness of insulating sealed lid and positive pole mass flow body and the thickness that can be than traditional rubber buffer are little 1-5mm, can make the more positive pole paper tinsel of the inside dress of shell, and the volume ratio promotes.

Drawings

Fig. 1 is a schematic structural view of an aluminum electrolytic capacitor having a novel lead-out structure in example 1.

Fig. 2 is a schematic sectional structure view of an aluminum electrolytic capacitor having a novel lead-out structure in example 1.

Fig. 3 is a schematic structural diagram of the core package in embodiment 1.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 is a schematic sectional structure view of an aluminum electrolytic capacitor having a novel lead-out structure in example 3.

Fig. 6 is a schematic sectional structure view of an aluminum electrolytic capacitor having a novel lead-out structure in example 4.

Description of the drawings

1. A housing; 2. a core package; 21. an anode foil; 22. electrolyzing paper; 23. a cathode foil; 3. an insulating seal cover; 4. an anode current collector; 5. an anode connection post; 51. a connecting table; 6. a cathode connection post; 7. and (6) a bump.

Detailed Description

To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the following specific embodiments.

It should be particularly noted that when an element is referred to as being "fixed to," secured to, "connected to or communicated with" another element, it can be directly fixed to, secured to, connected to or communicated with the other element or indirectly fixed to, secured to, connected to or communicated with the other element through other intermediate connecting members.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.

Example 1

The aluminum electrolytic capacitor with the novel lead-out structure as shown in fig. 1 and fig. 2 comprises a shell 1 and a core package 2, wherein the core package 2 is hermetically arranged in the shell 1 through a sealing assembly. As shown in fig. 3 and 4, the core pack 2 is formed by winding an anode foil 21, an electrolytic paper 22 and a cathode foil 23, wherein the anode foil 21 and the cathode foil 23 respectively extend out of the upper end and the lower end of the core pack 2; the sealing assembly comprises an insulating sealing cover 3 and an anode current collector 4, and the insulating sealing cover 3, the shell 1 and the anode current collector 4 are sealed through thermosetting glue; the anode foil 21 at the upper end of the core pack 2 and the cathode foil 23 at the lower end are in electrical contact with the anode current collector 4 and the bottom of the case 1, respectively. In the embodiment, the outer shell 1 is an aluminum shell, so that the cathode foil 23 extending out of the bottom of the core pack 2 can ensure the conductivity of contact when contacting the bottom of the outer shell 1; the shell 1 is used as a cathode, and a cathode connecting column 6 is arranged at the bottom of the shell 1. In this embodiment, the assembling step may be to fixedly connect the anode current collector 4 in the insulating sealing cover 3, extend the anode connection post 5 on the anode current collector 4 out of the insulating sealing cover 3, and hermetically connect the anode current collector 4 and the insulating sealing cover 3 through a thermal curing adhesive.

In the present embodiment, after the core pack 2 is wound, 2 layers of the electrolytic paper 22 are wound around the outer case 1 of the core pack 2. After the core bag 2 is wound, the anode foil 21 extends out of the upper end of the core bag 2 by 1mm; the cathode foil 23 extends 0.5mm beyond the lower end of the core pack 2. The length of the anode foil 21 and the cathode foil 23 extending out of the core package 2 may be between 0.1mm and 2mm as required.

The utility model discloses in, through sealed between insulating sealed lid 3 and shell 1 and the positive pole current collector 4, sealed effectual to insulating sealed lid 3 and the thickness of positive pole current collector 4 with can be than the little 1-5mm of thickness of traditional rubber buffer, can make 1 inside positive pole paper tinsel 21 that adorn more of shell, the volume to volume ratio promotes.

Example 2

In the present embodiment, the insulating seal cap 3 is made of silica glass, which is transparent; since the insulating sealing cover 3 is transparent, the insulating sealing cover 3 and the case 1 and the anode current collector 4 may be sealed by an ultraviolet curing adhesive. The other portions of this example are the same as example 1.

Example 3

As shown in fig. 5, in the present embodiment, the bottom of the anode connection post 5 on the anode current collector 4 is provided with a connection stage 51 connected with the insulating sealing cap 3; the through hole on the insulating sealing cover 3 is matched with the connecting column, and the connecting table 51 is clamped in the through hole on the insulating sealing cover 3. After the anode connecting column 5 on the anode current collector 4 is clamped in the through hole on the insulating sealing cover 3, the position of the anode current collector 4 on the insulating sealing cover 3 is fixed. The rest of this example is the same as example 1.

Example 4

As shown in fig. 6, in the present embodiment, the inside of the insulating sealing cover 3 is provided with a projection 7 or a convex ring for clamping connection with the anode current collector 4, and the projection 7 or the convex ring is arranged inside the bottom of the insulating sealing cover 3. When the anode current collector 4 is connected in the insulating sealing cover 3, the anode current collector 4 is pressed into the insulating sealing cover 3, so that the convex block 7 or the convex ring clamps the anode current collector 4; the bump 7 or the protruding ring is made of the same material as the insulating sealing cap 3 and is formed integrally with the insulating sealing cap 3. The other portions of this example are the same as example 1.

Claims

1. An aluminum electrolytic capacitor with a novel lead-out structure is characterized in that: the core package is hermetically arranged in the shell through a sealing component; the core bag is formed by winding an anode foil, electrolytic paper and a cathode foil, wherein the anode foil and the cathode foil respectively extend out of the upper end and the lower end of the core bag; the sealing assembly comprises an insulating sealing cover and an anode current collector, and the insulating sealing cover, the shell and the anode current collector are sealed through thermal curing glue or ultraviolet curing glue; and the anode foil at the upper end of the core package and the cathode foil at the lower end of the core package are respectively in electrical contact with the anode current collector and the bottom of the shell.

2. The aluminum electrolytic capacitor with a novel lead-out structure as claimed in claim 1, wherein: an anode connecting column is arranged on the anode current collector, and a through hole through which the anode connecting column passes is arranged on the insulating sealing cover; and the bottom of the shell is provided with a cathode connecting column.

3. The aluminum electrolytic capacitor with a novel lead-out structure as claimed in claim 2, wherein: the bottom of the anode connecting column is provided with a connecting column connected with an insulating sealing cover; the through hole on the insulating sealing cover is matched with the connecting column, and the connecting column is clamped in the through hole on the insulating sealing cover.

4. The aluminum electrolytic capacitor with a novel lead-out structure according to claim 1 or 2, characterized in that: the inner side of the insulating sealing cover is provided with a convex block or a convex ring which is connected with the anode current collector in a clamping manner, and the convex block or the convex ring is arranged on the inner side of the bottom of the insulating sealing cover.

5. The aluminum electrolytic capacitor with a novel lead-out structure as claimed in claim 1, wherein: the length of the anode foil and the cathode foil extending out of the upper end and the lower section of the core bag is 0.1mm-2mm.

6. The aluminum electrolytic capacitor with a novel lead-out structure as claimed in claim 1, wherein: the outer side of the core package is wrapped with at least one layer of electrolytic paper or cathode foil.