A durable aluminum electrolytic capacitor

Abstract

The present invention proposes a durable aluminum electrolytic capacitor, the elements of which include a first electrode foil, a first insulating paper layer, a second electrode foil and a second insulating paper layer stacked and wound in sequence from the inside to the outside; the first electrode foil is connected to a first pin, the second electrode foil is connected to a second pin, and an anti-short circuit insulating paper layer is also included, the anti-short circuit insulating paper layer is located between the first insulating paper layer and the second electrode foil, and the top of the anti-short circuit insulating paper layer is higher than the top of the first insulating paper layer and the second insulating paper layer. It can effectively prevent short circuits from occurring and improve service life.

Description

Technical Field

[0001] The invention relates to the field of electronic technology, and in particular to a durable aluminum electrolytic capacitor. Background Art

[0002] All capacitors consist of two layers of conductive material (or electrodes) separated by an insulator made of dielectric material. An electric field is generated between these layers, and when a current is passed through the capacitor, it can store energy. Common capacitors are prone to misalignment, causing the two electrodes to come into direct contact, shorting, and burning out. Therefore, there is an urgent need for a durable aluminum electrolytic capacitor that is not prone to shorting. Summary of the invention

[0003] The present invention aims to at least solve the technical problems existing in the prior art, and in particular innovatively proposes a durable aluminum electrolytic capacitor capable of preventing short circuit.

[0004] In order to achieve the above-mentioned purpose of the present invention, the present invention provides a durable aluminum electrolytic capacitor, the elements of the capacitor include a first electrode foil, a first insulating paper layer, a second electrode foil and a second insulating paper layer stacked and wound in sequence from the inside to the outside; the first electrode foil is connected to a first pin, the second electrode foil is connected to a second pin, and also includes an anti-short circuit insulating paper layer, the anti-short circuit insulating paper layer is located between the first insulating paper layer and the second electrode foil, and the top of the anti-short circuit insulating paper layer is higher than the top of the first insulating paper layer and the second insulating paper layer.

[0005] In the above solution: the bottom of the anti-short circuit insulating paper layer is lower than the bottom of the first insulating paper layer and the second insulating paper layer.

[0006] In the above solution: the first insulating paper layer, the second insulating paper layer and the anti-short circuit insulating paper layer are all electrolytic paper.

[0007] In the above scheme: the distance between the top and the bottom of the anti-short circuit insulation paper layer and the first insulation paper layer and the second insulation paper layer is 1mm to 1.5mm.

[0008] In the above scheme: the top and bottom portions of the anti-short circuit insulating paper layer that exceed the first insulating paper layer and the second insulating paper layer are respectively bent toward the first insulating paper layer and the second insulating paper layer to form an anti-short circuit shielding edge, and the first pin and the second pin are respectively connected to the corresponding electrode foil from the top and the bottom. The anti-short circuit shielding edge can further prevent the first electrode foil from directly contacting the second electrode foil, effectively preventing short circuit.

[0009] In the above scheme: the top of the anti-short circuit insulating paper layer is bent toward the second electrode foil, and the bottom is bent toward the first electrode foil. The first pin is connected to the bottom of the first electrode foil and extends from the winding center of the element to the top of the element. It can save space, and it is easier to wind with the first pin as the winding column. At the same time, when winding the element, the inner side is the exposed first electrode foil, and the metal rod of the first pin can directly contact the first electrode foil, which is a reasonable design.

[0010] In the above solution: the first electrode foil and the second electrode foil are both aluminum foils.

[0011] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present invention are: the first electrode foil and the second electrode foil can be effectively separated by the anti-short circuit insulating paper layer, which can reduce the possibility of short circuit to a certain extent, avoid burning, and increase the service life; only one layer of anti-short circuit insulating paper layer is added, which will not cause major changes to the appearance size of the capacitor, and the original volume size can be maintained as much as possible, which will not affect the processing difficulty during circuit integration.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the arrangement of the first electrode foil, the second electrode foil, the anti-short circuit insulating paper layer, the first insulating paper layer and the second insulating paper layer of the present invention;

[0016] Figure 3 It is a cross-sectional view of the present invention. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] like Figure 1-Figure 3As shown, a durable aluminum electrolytic capacitor, the capacitor element 1 includes a first electrode foil 2, a first insulating paper layer 3, a second electrode foil 5, and a second insulating paper layer 6 stacked and wound in sequence from the inside to the outside. The first electrode foil 2 is connected to a first pin 7, and the second electrode foil 5 is connected to a second pin 8. It also includes an anti-short circuit insulating paper layer 4, which is located between the first insulating paper layer 3 and the second electrode foil 5. The top of the anti-short circuit insulating paper layer 4 is higher than the top of the first insulating paper layer 3 and the second insulating paper layer 6.

[0019] Preferably, the bottom of the anti-short circuit insulating paper layer 4 is also lower than the bottom of the first insulating paper layer 3 and the second insulating paper layer 6. Short circuits can be prevented from both the upper and lower sides. In addition, the distances of the top and bottom of the anti-short circuit insulating paper layer 4 beyond the first insulating paper layer 3 and the second insulating paper layer 6 are both 1 mm to 1.5 mm.

[0020] Preferably, the top and bottom portions of the anti-short circuit insulating paper layer 4 that exceed the first insulating paper layer 3 and the second insulating paper layer 6 are bent toward the first insulating paper layer 3 and the second insulating paper layer 6, respectively, to form an anti-short circuit shielding edge 4a. The anti-short circuit shielding edge 4a can further prevent the first electrode foil 2 from directly contacting the second electrode foil 5, effectively preventing short circuit. The first pin 7 and the second pin 8 are connected to the corresponding electrode foil from the top and bottom, respectively.

[0021] The top of the anti-short circuit insulating paper layer 4 is bent toward the second electrode foil 5, and the bottom is bent toward the first electrode foil 2. The first pin 7 is connected to the bottom of the first electrode foil 2 and extends from the winding center of the element 1 to the top of the element 1. It can save space, and it is easier to wind with the first pin 7 as the winding column. At the same time, when winding the element 1, the inner side is the exposed first electrode foil 2, and the metal rod of the first pin 7 can directly contact the first electrode foil 2, which is a reasonable design.

[0022] Preferably, the first insulating paper layer 3, the second insulating paper layer 6 and the anti-short circuit insulating paper layer 4 are all electrolytic paper, which is easy to obtain and reliable.

[0023] Preferably, the first electrode foil 2 and the second electrode foil 5 are both aluminum foils, which are readily available and reliable.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A durable aluminum electrolytic capacitor, wherein the capacitor element (1) comprises a first electrode foil (2), a first insulating paper layer (3), a second electrode foil (5) and a second insulating paper layer (6) which are stacked and wound in sequence from the inside to the outside; the first electrode foil (2) is connected to a first pin (7), the second electrode foil (5) is connected to a second pin (8), Features: It also comprises an anti-short circuit insulating paper layer (4), the anti-short circuit insulating paper layer (4) being located between the first insulating paper layer (3) and the second electrode foil (5), the top of the anti-short circuit insulating paper layer (4) being higher than the tops of the first insulating paper layer (3) and the second insulating paper layer (6); The bottom of the anti-short circuit insulating paper layer (4) is lower than the bottom of the first insulating paper layer (3) and the bottom of the second insulating paper layer (6); The distances of the top and bottom of the anti-short circuit insulating paper layer (4) beyond the first insulating paper layer (3) and the second insulating paper layer (6) are both in the range of 1 mm to 1.5 mm; The portions of the top and bottom of the anti-short circuit insulating paper layer (4) that extend beyond the first insulating paper layer (3) and the second insulating paper layer (6) are respectively bent toward the first insulating paper layer (3) and the second insulating paper layer (6) to form an anti-short circuit shielding edge (4a), and the first pin (7) and the second pin (8) are respectively connected to corresponding electrode foils from the top and bottom; The top of the anti-short circuit insulating paper layer (4) is bent toward the second electrode foil (5), and the bottom is bent toward the first electrode foil (2); the first pin (7) is connected to the bottom of the first electrode foil (2) and extends from the winding center of the element (1) to the top of the element (1).

2. A durable aluminum electrolytic capacitor according to claim 1, Features: The first insulating paper layer (3), the second insulating paper layer (6) and the anti-short circuit insulating paper layer (4) are all electrolytic paper.

3. A durable aluminum electrolytic capacitor according to claim 1, Features: The first electrode foil (2) and the second electrode foil (5) are both aluminum foils.

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