CN211858432U

CN211858432U - Aluminum electrolytic capacitor shell

Info

Publication number: CN211858432U
Application number: CN201922295993.0U
Authority: CN
Inventors: 周文华; 梁小兆; 郑林; 徐立建; 徐立伟
Original assignee: Rudong Lianyi Electromechanical Co ltd
Current assignee: Rudong Lianyi Electromechanical Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-11-03
Anticipated expiration: 2029-12-19

Abstract

The utility model provides an aluminum electrolytic capacitor shell which comprises an aluminum shell and electrolytic paper, wherein the aluminum shell is a hollow cylinder with an upper opening, and the square electrolytic paper is arranged at the bottom of the aluminum shell. The utility model has the advantages of improving the capacity of the capacitor under the same volume and solving the technical problem that the capacitor is easy to be punctured when the margin is small.

Description

Aluminum electrolytic capacitor shell

Technical Field

The utility model relates to an electron original paper field, concretely relates to aluminum electrolytic capacitor shell.

Background

With the development of more and more miniaturization and high performance requirement of electronic products, the requirements for electronic components are also increased. The aluminum electrolytic capacitor is indispensable in various electronic products due to its excellent cost performance. In the design and production process of aluminum electrolytic capacitors, the capacity per unit volume must be considered, and the capacity is affected by the area of the aluminum foil. Therefore, the core package is maximized as much as possible during the design of the aluminum electrolytic capacitor, so that the surface area of the aluminum foil in the core package is increased. When a common aluminum electrolytic capacitor shell is used for production, in order to prevent the end of the core cladding and the bottom of the aluminum shell from generating an electrical breakdown phenomenon, the aluminum foil edge allowance of the core cladding is generally required to be as large as possible. In this way, under the condition of a certain height, the smaller the margin of the aluminum foil, the larger the capacity is, but the risk of electric breakdown is high, and on the contrary, the larger the margin is, the smaller the risk of electric breakdown is, but the smaller the capacity is, and the performance is weakened accordingly.

Disclosure of Invention

In order to solve the contradiction between the two, the utility model provides a novel aluminum electrolytic capacitor shell, namely a paper-filled aluminum shell, which can solve the problem of the dilemma.

The aluminum electrolytic capacitor shell comprises an aluminum shell and electrolytic paper, wherein the aluminum shell is a hollow cylinder with an opening at the upper part, and the square electrolytic paper is arranged at the bottom of the aluminum shell.

Pouring the produced common aluminum shell into a vibration disc, arranging the aluminum shells orderly, then pushing electrolytic paper with a certain size above the aluminum shell, sucking the paper by using a paper sucking rod, cutting the paper by using a paper cutter at a certain length position, and pushing the cut paper into the bottom of the aluminum shell by using the paper sucking rod, thereby fixing the electrolytic paper at the bottom of the aluminum shell. This kind of aluminum hull is in production aluminum electrolytic capacitor's time, because there is one deck electrolytic paper as the insulating layer between the core package with the aluminum hull bottom, can use the minimum core package of aluminium foil allowance volume also can not produce the electric breakdown phenomenon, and the security is high, lets the capacitor of the same volume can make the product of bigger capacity, lets aluminum electrolytic capacitor exert the highest performance.

In order to ensure that the electrolytic paper in the paper-padding aluminum shell can be firmly adhered to the inner bottom of the aluminum shell and meet the requirements of sophisticated customers, the company also develops a process of adding glue, wherein the glue is dissolved at high temperature and is added to the bottom of a product in a needle-type point adding mode, so that the electrolytic paper is firmly adhered to the inner bottom of the aluminum shell.

The capacitor has the beneficial effects that the capacity of the capacitor is improved under the same volume, and the technical problem that the capacitor is easy to break down when the margin is small is solved.

Drawings

FIG. 1 is a cross-sectional view of the aluminum electrolytic capacitor case;

in the figure, 1-aluminum shell and 2-electrolytic paper.

Detailed Description

Embodiment 1:

as shown in figure 1, the aluminum electrolytic capacitor shell comprises an aluminum shell 1 and electrolytic paper 2, wherein the aluminum shell 1 is a hollow cylinder with an opening at the upper part, and the square electrolytic paper 2 is arranged at the bottom of the aluminum shell 1. The length and width of the electrolytic paper 2 are larger than the inner diameter of the aluminum shell 1; the electrolytic paper 2 is adhered to the bottom of the aluminum shell 1 through hot melt adhesive; the outer diameter of the aluminum shell 1 is 3 mm to 35 mm; the thickness of the electrolytic paper 2 is 0.02-0.05 mm.

Embodiment 2:

as shown in fig. 1, the aluminum electrolytic capacitor shell comprises an aluminum shell 1 and electrolytic paper 2, wherein the aluminum shell 1 is a hollow cylinder with an opening at the upper part; the square electrolytic paper 2 is arranged at the bottom of the aluminum shell 1. The diameter of the electrolytic paper 2 is larger than the inner diameter of the aluminum shell 1; the electrolytic paper 2 is adhered to the bottom of the aluminum shell 1 through hot melt adhesive; the outer diameter of the aluminum shell 1 is 3 mm to 35 mm; the thickness of the electrolytic paper 2 is 0.02-0.05 mm.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An aluminum electrolytic capacitor shell is characterized by comprising an aluminum shell (1) and electrolytic paper (2), wherein the aluminum shell (1) is a hollow cylinder with an opening at the upper part, and the electrolytic paper (2) is arranged at the bottom of the aluminum shell (1).

2. The aluminum electrolytic capacitor shell according to claim 1, wherein the length and width dimensions of the electrolytic paper (2) are larger than the inner diameter of the aluminum shell (1).

3. The aluminum electrolytic capacitor shell according to claim 1 or 2, characterized in that the electrolytic paper (2) is adhered to the bottom of the aluminum shell (1) by hot melt adhesive.

4. The aluminum electrolytic capacitor case according to claim 1 or 2, wherein the outer diameter of the aluminum case (1) is 3 mm to 35 mm.

5. The aluminum electrolytic capacitor shell according to claim 1 or 2, characterized in that the thickness of the electrolytic paper (2) is 0.02-0.05 mm.