CN212411844U

CN212411844U - Novel capacitor structure

Info

Publication number: CN212411844U
Application number: CN202020878782.XU
Authority: CN
Inventors: 胡少强; 史晓凡; 杨静如; 潘振炎
Original assignee: Hunan Aihua Group Co Ltd
Current assignee: Hunan Aihua Group Co Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-01-26
Anticipated expiration: 2030-05-22

Abstract

A novel capacitor structure comprises an aluminum shell, a core package and a rubber plug, wherein the core package is arranged in the aluminum shell in a sealing mode through the rubber plug, the core package comprises anode foil, electrolytic paper and cathode foil, and the anode foil, the electrolytic paper and the cathode foil are wound to form the core package; the anode foil and the cathode foil are respectively connected with an anode guide pin and a cathode guide pin, and the anode guide pin and the cathode guide pin extend out of the rubber plug; the anode guide pin and the cathode guide pin all include connecting portion, transition portion and weld part, and connecting portion, other end connection weld part are connected to the one end of transition portion, and the terminal bending type of transition portion becomes the weld part, and connecting portion are L shape setting with transition portion, are provided with the arch in the transition portion. The arrangement of the bulges in the utility model ensures that the anode guide pin and the cathode guide pin of the paster aluminum electrolytic capacitor arranged on the aluminum substrate have enough electric clearance and creepage distance with the edge of the through hole on the aluminum substrate; meanwhile, the welding positions of the anode guide pin and the cathode guide pin on the aluminum substrate can deviate from the linear direction of the transition position, so that the installation is more convenient and reliable.

Description

Novel capacitor structure

Technical Field

The utility model relates to an aluminum electrolytic capacitor especially relates to an aluminum electrolytic capacitor that electric clearance and creepage distance are big after the paster welding is on aluminium base board.

Background

Currently in some lighting devices, such as LEDs; in order to reduce the volume of equipment and the convenience of production, a capacitor is directly connected to a substrate of a luminous bead by people at present, and all elements can be welded by directly performing reflow soldering once. If the capacitors are connected to the same surface, the capacitors inevitably block light emitted from the light-emitting beads to form black spots. At present, a large through hole is formed in an aluminum substrate, a lead end of an aluminum electrolytic capacitor penetrates through the through hole to be inserted into a wiring terminal of a lamp bead surface, however, in the process of actual use, the cost of the terminal and the cost of later-stage manual plug-in components can be found to be increased, the electrolytic capacitor can be directly placed on a circuit board through a chip mounter, and welding of all components is completed through one-time reflow soldering.

Meanwhile, because the existing aluminum electrolytic capacitor is small in size, the installation space on the aluminum substrate is also small; this is because the choice of the soldering point is sometimes not in the straight direction of the anode lead pin and the cathode lead pin during soldering, and the conventional lead structure is no longer suitable.

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 a install the big paster aluminum electrolytic capacitor of back electric clearance and creepage distance on aluminium base board.

In order to solve the technical problem, the utility model provides a technical scheme does: a novel capacitor structure comprises an aluminum shell, a core package and a rubber plug, wherein the core package is arranged in the aluminum shell in a sealing mode through the rubber plug, the core package comprises anode foil, electrolytic paper and cathode foil, and the anode foil, the electrolytic paper and the cathode foil are wound to form the core package; the anode foil and the cathode foil are respectively connected with an anode guide pin and a cathode guide pin, and the anode guide pin and the cathode guide pin extend out of the rubber plug; the anode guide pin and the cathode guide pin both comprise a connecting portion, a transition portion and a welding portion, one end of the transition portion is connected with the connecting portion, the other end of the transition portion is connected with the welding portion, the tail end of the transition portion is bent to form the welding portion, the connecting portion and the transition portion are arranged in an L shape, a protrusion is arranged on the transition portion, the height of the protrusion is larger than or equal to 1mm, and the horizontal distance between the middle of the protrusion and the aluminum shell is larger than or equal to 1 mm.

In the above novel capacitor structure, preferably, the distance between the transition part and the outer shell of the aluminum electrolytic capacitor is greater than or equal to 1 mm.

In the novel capacitor structure, preferably, the protrusion is arranged at the joint part between the connecting part and the transition part, and the horizontal distance from the middle of the protrusion to the aluminum shell is greater than or equal to 1 mm; the height of the protrusion is greater than or equal to 1 mm.

In the novel capacitor structure, preferably, the protrusion is U-shaped, V-shaped or arc-shaped.

In the novel capacitor structure, preferably, the welding portion is flattened or directly arranged in a flat shape.

Compared with the prior art, the utility model has the advantages that the arrangement of the bulge ensures that the anode guide pin and the cathode guide pin of the aluminum electrolytic capacitor arranged on the aluminum substrate have enough electric clearance and creepage distance with the edge of the through hole on the aluminum substrate; and a sufficient electric gap is kept between the edge of the through hole on the aluminum substrate and the aluminum shell. Meanwhile, the welding positions of the anode guide pin and the cathode guide pin on the aluminum substrate can deviate from the linear direction of the transition position, so that the installation is more convenient.

Drawings

Fig. 1 is a schematic structural diagram of a novel capacitor structure in example 1.

Fig. 2 is a schematic structural diagram of a novel capacitor structure in embodiment 2.

Description of the figures

1. An aluminum shell; 2. a connecting portion; 3. a transition section; 4. a protrusion; 5. welding the part; 6. an aluminum substrate.

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 specific embodiments described below.

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

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

As shown in fig. 1, the patch aluminum electrolytic capacitor with large electrical gap and large creepage distance comprises an aluminum shell 1, a core package and a rubber plug, wherein the core package is hermetically arranged in the aluminum shell 1 through the rubber plug, the core package comprises anode foil, electrolytic paper and cathode foil, and the anode foil, the electrolytic paper and the cathode foil are wound to form the core package; the anode foil and the cathode foil are respectively connected with an anode guide pin and a cathode guide pin, and the anode guide pin and the cathode guide pin extend out of the rubber plug; the anode guide pin and the cathode guide pin both comprise a connecting part, a transition part and a welding part 5, one end of the transition part is connected with the connecting part, the other end of the transition part is connected with the welding part 5, the tail end of the transition part is bent to form the welding part 5, and the connecting part 2 and the transition part 3 are arranged in an L shape. The connecting part 2 of the anode guide pin is riveted on the anode foil, and the connecting part 2 of the cathode guide pin is riveted on the cathode foil. The transition part 3 is provided with a bulge 4, the height of the bulge 4 is greater than or equal to 1mm, and the horizontal distance from the middle of the bulge 4 to the aluminum shell 1 is greater than or equal to 1 mm; that is to say, after the aluminum substrate is mounted on the aluminum substrate, the distance from the edge of the through hole of the aluminum substrate to the aluminum shell is greater than or equal to 1mm, and the distance from the edge of the through hole of the aluminum substrate to the transition part is greater than or equal to 1 mm. The distance between the transition part 3 and the shell of the aluminum electrolytic capacitor is larger than or equal to 1 mm.

In the present embodiment, the welded portion 5 and the welded portion 5 of the aluminum substrate 6 are flattened. The horizontal distance between the flattened part of the welding part 5 and the middle of the bulge 4 is more than or equal to 1 mm. In general, the position of the welded portion 5 and the welded portion 5 of the aluminum substrate 6 are far from the bump 4, so that the creepage phenomenon does not occur between the position of the welded portion 5 and the edge of the through hole in the aluminum substrate 6. The welding part 5 is flattened, so that the welding area between the welding part 53 and the aluminum substrate 6 is increased, the welding is easier, and the welding is firmer.

In this embodiment, the aluminum substrate 6 is provided with a through hole for mounting an aluminum electrolytic capacitor, the lead terminal of the aluminum electrolytic capacitor is passed through the through hole, and the anode guide pin and the cathode guide pin are mounted on the surface of the aluminum substrate 6 on which the circuit is provided. The main body of the aluminum electrolytic capacitor is directly suspended in the through hole on the aluminum substrate 6.

In this embodiment, after the aluminum electrolytic capacitor is welded on the aluminum substrate 6, the edge of the through hole on the aluminum substrate 6 is located below the protrusion 4, and the distance from the edge of the through hole on the aluminum substrate 6 to the external connection part 3 is greater than or equal to 1 mm. Meanwhile, the distance between the edge of the through hole on the aluminum substrate 6 and the aluminum shell 1 is greater than or equal to 1 mm. In this embodiment, by the arrangement of the protrusion 4, after the aluminum substrate 6 is mounted, the edge of the through hole for mounting the aluminum electrolytic capacitor on the aluminum substrate 6 and the external connection part 3 of the anode guide pin and the cathode guide pin keep a sufficient creepage distance, so that the creepage phenomenon does not occur. Meanwhile, the distance between the edge of the through hole for mounting the aluminum electrolytic capacitor on the aluminum substrate 6 and the aluminum shell 1 is ensured, so that the creepage distance between the aluminum substrate 6 and the aluminum shell 1 cannot occur

The arrangement of the bulges in the aluminum electrolytic capacitor ensures that the anode guide pin and the cathode guide pin of the aluminum electrolytic capacitor arranged on the aluminum substrate have enough creepage distance with the edge of the through hole on the aluminum substrate; sufficient creepage distance is kept between the edge of the through hole on the aluminum substrate and the aluminum shell. Meanwhile, the 5 positions of the welding parts of the anode guide pins and the cathode guide pins on the aluminum substrate can deviate from the linear direction of the transition positions, so that the installation is more convenient.

Example 2

As shown in fig. 2, in the present embodiment, the protrusion 4 is disposed at the joint portion between the connecting portion 2 and the transition portion 3, and the horizontal distance from the middle of the protrusion 4 to the aluminum case 1 is greater than or equal to 1 mm; the height of the projections 4 is greater than or equal to 1 mm. As shown in fig. 2, the protrusion 4 has a U-shape, a V-shape, or an arc shape.

The rest of the present embodiment is the same as embodiment 1.

Claims

1. A novel capacitor structure is characterized in that: the core package comprises an aluminum shell, a core package and a rubber plug, wherein the core package is arranged in the aluminum shell in a sealing mode through the rubber plug, the core package comprises anode foil, electrolytic paper and cathode foil, and the anode foil, the electrolytic paper and the cathode foil are wound to form the core package; the anode foil and the cathode foil are respectively connected with an anode guide pin and a cathode guide pin, and the anode guide pin and the cathode guide pin extend out of the rubber plug; the anode guide pin and the cathode guide pin both comprise a connecting portion, a transition portion and a welding portion, one end of the transition portion is connected with the connecting portion, the other end of the transition portion is connected with the welding portion, the tail end of the transition portion is bent to form the welding portion, the connecting portion and the transition portion are arranged in an L shape, a protrusion is arranged on the transition portion, the height of the protrusion is larger than or equal to 1mm, and the horizontal distance between the middle of the protrusion and the aluminum shell is larger than or equal to 1 mm.

2. The novel capacitor structure of claim 1, wherein: the distance between the transition part and the shell of the aluminum electrolytic capacitor is greater than or equal to 1 mm.

3. The novel capacitor structure of claim 1, wherein: the protrusion is arranged at a combining part between the connecting part and the transition part.

4. A novel capacitor structure according to any one of claims 1-3, characterized in that: the bulge is U-shaped, V-shaped or arc-shaped.

5. A novel capacitor structure according to any one of claims 1-3, characterized in that: the welding part is flattened or is directly arranged in a flat shape.