Aluminum electrolytic capacitor with novel lead-out structure

Abstract

An aluminum electrolytic capacitor with a novel lead-out structure comprises a shell, a core package and a sealing piece, the core package is arranged in the shell in a sealed mode through the sealing piece, the core package is formed by winding after anode foil, electrolytic paper and cathode foil are stacked, and the stacking sequence of the anode foil, the electrolytic paper and the cathode foil is anode foil-electrolytic paper-cathode foil-electrolytic paper-anode foil. In the core cladding of the aluminum electrolytic capacitor with the novel lead-out structure, two anode foils are correspondingly led out by one cathode foil, so that the use of the cathode foil is reduced, the size of the core cladding can be reduced, and meanwhile, the cost is saved.

Description

Technical Field

[0001] The utility model relates to an aluminum electrolytic capacitor, in particular to an aluminum electrolytic capacitor with a novel lead-out structure. Background Art

[0002] The core package of a traditional aluminum electrolytic capacitor is wound by an anode foil, electrolytic paper and a cathode foil. One anode foil corresponds to one cathode foil, and then the anode foil and the cathode foil are isolated by the electrolytic paper; in the core package, the cathode foil mainly plays the role of electrical lead-out, so too many cathode foils will increase the size of the aluminum electrolytic capacitor. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an aluminum electrolytic capacitor with a novel lead-out structure.

[0004] To solve the above technical problem, the technical solution proposed by the utility model is as follows: 1. An aluminum electrolytic capacitor with a novel lead-out structure, comprising a housing, a core package and a seal. The core package is hermetically arranged in the housing through the seal. The core package is wound by laminating an anode foil, electrolytic paper and a cathode foil. The lamination order of the anode foil, electrolytic paper and cathode foil is anode foil - electrolytic paper - cathode foil - electrolytic paper - anode foil.

[0005] For the above aluminum electrolytic capacitor with a novel lead-out structure, preferably, a cathode lead pin is electrically connected to the cathode foil, and anode lead pins are electrically connected to both of the two anode foils; the anode lead pins and the cathode lead pin both extend out of the seal.

[0006] For the above aluminum electrolytic capacitor with a novel lead-out structure, preferably, a cathode lead foil strip is electrically connected to the cathode foil; anode lead foil strips are electrically connected to both of the two anode foils; the cathode lead foil strip is electrically connected to the cathode terminal on the seal; the anode lead foil strips are electrically connected to the anode terminals on the seal.

[0007] For the above aluminum electrolytic capacitor with a novel lead-out structure, preferably, the width of the electrolytic paper in the core package is greater than the width of the anode foil; the two side edges of the anode foil are located inside the two side edges of the electrolytic paper.

[0008] For the above aluminum electrolytic capacitor with a novel lead-out structure, preferably, the width of the anode foil in the core package is greater than the width of the cathode foil; the two side edges of the cathode foil are located inside the two side edges of the anode foil.

[0009] Compared with the prior art, the advantages of the utility model are as follows: In the core package of the aluminum electrolytic capacitor with a novel lead-out structure of the utility model, two anode foils are led out by one cathode foil, thereby reducing the use of the cathode foil, being able to reduce the size of the core package and save costs at the same time. Brief Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of an aluminum electrolytic capacitor with a novel lead-out structure in Embodiment 1.

[0011] Figure 2 It is a schematic structural diagram after the core package in Embodiment 1 is unfolded.

[0012] Figure 3 It is a schematic structural diagram after the core package in Embodiment 2 is unfolded.

[0013] Legend Explanation

[0014] 1. Outer shell; 2. Core package; 21. Anode foil; 22. Electrolytic paper; 23. Cathode foil; 3. Sealing member; 4. Anode lead pin; 5. Cathode lead pin. Detailed Implementation Manner

[0015] For the convenience of understanding the present utility model, the following will describe the present utility model more comprehensively and meticulously in conjunction with the accompanying drawings of the specification and preferred embodiments, but the protection scope of the present utility model is not limited to the following specific embodiments.

[0016] It should be particularly noted that when an element is described as "fixed to, fixedly connected to, connected to, or communicated with" another element, it can be directly fixed, fixedly connected, connected, or communicated to the other element, or indirectly fixed, fixedly connected, connected, or communicated to the other element through other intermediate connecting members.

[0017] Unless otherwise defined, all professional terms used hereinafter have the same meaning as commonly understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present utility model. Embodiment 1

[0018] This embodiment provides an aluminum electrolytic capacitor with a novel lead-out structure, which is a leaded aluminum electrolytic capacitor, as Figure 1As shown in the figure, it includes a housing 1, a core package 2 and a seal 3. The core package 2 is sealed and arranged in the housing 1 through the seal 3, and the seal 3 is a rubber plug. The core package 2 is formed by winding an anode foil 21, an electrolytic paper 22 and a cathode foil 23 after laminating them. The lamination order of the anode foil 21, the electrolytic paper 22 and the cathode foil 23 is anode foil 21 - electrolytic paper 22 - cathode foil 23 - electrolytic paper 22 - anode foil 21. In this embodiment, anode guide pins 4 are riveted on both of the two anode foils 21, and a cathode guide pin 5 is riveted on the cathode foil 23; that is, there are two anode guide pins 4 and one cathode guide pin 5 in the aluminum electrolytic capacitor of this embodiment; the two anode guide pins 4 and one cathode guide pin 5 extend out of the rubber plug. In this embodiment, the rubber plug and the housing 1 are sealed by setting a waist on the housing 1 to squeeze the rubber plug and through the crimping at the open end of the housing 1.

[0019] In this embodiment, as Figure 2 shown, the two side edges of the anode foil 21 and the cathode foil 23 are aligned, and the width of the electrolytic paper 22 is greater than the widths of the anode foil 21 and the cathode foil 23; the two side edges of the anode foil 21 and the cathode foil 23 are located inside the two side edges of the electrolytic paper 22.

[0020] In the core package 2 of the aluminum electrolytic capacitor with a novel lead-out structure in this embodiment, the two anode foils 21 are correspondingly led out by one cathode foil 23, thereby reducing the use of the cathode foil 23, being able to reduce the size of the core package 2 and save costs at the same time. Embodiment 2

[0021] In this embodiment, as Figure 3 shown, the width of the electrolytic paper 22 in the core package 2 is greater than the width of the anode foil 21; the two side edges of the anode foil 21 are located inside the two side edges of the electrolytic paper 22. The width of the anode foil 21 in the core package 2 is greater than the width of the cathode foil 23; the two side edges of the cathode foil 23 are located inside the two side edges of the anode foil 21. As Figure 3 described, in this embodiment, even if the burrs on the edge of the anode foil 21 pierce through the electrolytic paper 22, it is not easy to contact the cathode foil 23 to form a short circuit.

[0022] Other parts of this embodiment are the same as those of Embodiment 1. Embodiment 3

[0023] The aluminum electrolytic capacitor with a novel lead-out structure in this embodiment is a bolt-type aluminum electrolytic capacitor or a horn-type aluminum electrolytic capacitor. In this embodiment, a cathode lead foil strip is electrically connected to the cathode foil 23; anode lead foil strips are electrically connected to both of the two anode foils 21; the cathode lead foil strip is electrically connected to the cathode terminal on the seal 3; the anode lead foil strips are electrically connected to the anode terminals on the seal 3.

[0024] Other parts of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

Claims

1. An aluminum electrolytic capacitor with a novel lead-out structure, characterized in that: It includes a housing, a core package and a seal. The core package is sealed and arranged in the housing through the seal. The core package is formed by winding an anode foil, electrolytic paper and a cathode foil after laminating them, and the lamination order of the anode foil, electrolytic paper and cathode foil is anode foil - electrolytic paper - cathode foil - electrolytic paper - anode foil.

2. The aluminum electrolytic capacitor with a novel lead-out structure according to claim 1, characterized in that: A cathode lead pin is electrically connected to the cathode foil, and anode lead pins are electrically connected to both of the two anode foils; the anode lead pins and the cathode lead pin both extend out of the seal.

3. The aluminum electrolytic capacitor with a novel lead-out structure according to claim 1, characterized in that: A cathode lead foil strip is electrically connected to the cathode foil; anode lead foil strips are electrically connected to both of the two anode foils; the cathode lead foil strip is electrically connected to the cathode terminal on the seal; the anode lead foil strips are electrically connected to the anode terminals on the seal.

4. The aluminum electrolytic capacitor with a novel lead-out structure according to claim 1, characterized in that: The width of the electrolytic paper in the core package is greater than the width of the anode foil; the two side edges of the anode foil are located inside the two side edges of the electrolytic paper.

5. The aluminum electrolytic capacitor with a novel lead-out structure according to claim 4, characterized in that: The width of the anode foil in the core package is greater than the width of the cathode foil; the two side edges of the cathode foil are located inside the two side edges of the anode foil.

Images