Aluminum capacitor

Abstract

The present invention relates to the technical field of capacitors, and in particular to an aluminum capacitor, which comprises a shell with an opening at the upper end, a capacitor core embedded in the shell, a retaining ring fixedly arranged along the circumferential direction on the upper end of the capacitor core on the inner wall of the shell, a first seal embedded in the retaining ring; a sealing assembly fixedly arranged on the upper end of the first seal for sealing and fixing the capacitor core; a positive electrode pin and a negative electrode pin are vertically inserted at the upper end of the capacitor core, and the positive electrode pin and the negative electrode pin are exposed after passing through the first seal and the sealing assembly from the inside to the outside in sequence. The aluminum capacitor has a simple structure, and adopts a retaining edge arranged on the inner side of the aluminum shell to effectively cooperate with the multi-layer sealing assembly, thereby improving the built-in stability of the overall capacitor core, avoiding the leakage of insulating liquid, and improving the service life of the overall aluminum capacitor, which is convenient for wide promotion and use.

Description

Technical Field

[0001] The invention relates to the technical field of capacitors, in particular to an aluminum capacitor. Background Art

[0002] With the continuous development of society, capacitors have been widely used in all walks of life. There are many types of capacitors, among which aluminum capacitors are an important component. At present, aluminum capacitors usually use sealing plugs to seal and fix the pin outlet position, which can ensure the stable internalization of the capacitor core. However, it is found in the long-term use process that insulating liquid usually flows out of the edge of the sealing plug of aluminum capacitors, which will affect the normal use of the capacitor. In severe cases, short circuits may occur and the entire capacitor is damaged, which brings great inconvenience to people's actual use. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problems existing in the above-mentioned background technology, an aluminum capacitor is provided, which has a simple structure and adopts a rib arranged on the inner side of the aluminum shell to effectively cooperate with the multi-layer sealing component to improve the built-in stability of the overall capacitor core, avoid leakage of insulating liquid, and increase the service life of the overall aluminum capacitor, so as to facilitate wide promotion and use.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an aluminum capacitor, comprising a shell with an opening at the upper end, a capacitor core embedded in the shell, the upper end of the capacitor core is located on the inner wall of the shell and a retaining ring is fixedly arranged along the circumferential direction, and a first sealing member is embedded and fixed in the retaining ring; a sealing component is fixedly arranged on the upper end of the first sealing member for sealing and fixing the capacitor core; a positive pin and a negative pin are vertically inserted into the upper end of the capacitor core, and the positive pin and the negative pin pass through the first sealing member and the sealing component in sequence from the inside to the outside and then are exposed.

[0005] To further illustrate, in the above technical solution, the sealing assembly includes a second sealing member and a third sealing member; the second sealing member is a columnar structure, and the second sealing member is embedded between the first sealing member and the third sealing member.

[0006] To further illustrate, in the above technical solution, a concave reinforcing rib is provided on the inner side of the upper portion of the shell along the circumferential direction, and the concave reinforcing rib engages the third sealing member and sets it in the shell.

[0007] To further illustrate, in the above technical solution, an inner flange is arranged on the upper end of the shell along the circumferential direction, and the inner flange is embedded on the upper end surface of the third sealing member.

[0008] To further illustrate, in the above technical solution, the cross section of the retaining ring is a trapezoidal structure, and the retaining ring and the shell are an integral structure.

[0009] To further illustrate, in the above technical solution, the cross section of the first sealing member is an I-shaped structure, and the first sealing member is engaged with the retaining ring.

[0010] To further illustrate, in the above technical solution, the capacitor core includes electrolytic paper, positive aluminum foil, negative aluminum foil, aluminum stem and electrolyte; the electrolytic paper is soaked with electrolyte; one side of the electrolytic paper is coated with positive aluminum foil, the positive aluminum foil is fixedly provided with an aluminum stem, and one end of the aluminum stem is connected to the positive electrode pin; the other side of the electrolytic paper is coated with negative aluminum foil, the negative aluminum foil is fixedly provided with an aluminum stem, and one end of the aluminum stem is fixedly connected to the negative electrode pin.

[0011] To further illustrate, in the above technical solution, the aluminum stems are fixedly arranged on the positive electrode aluminum foil and the negative electrode aluminum foil respectively by means of nail patterns.

[0012] To further illustrate, in the above technical solution, the thickness of the second sealing member is 3 to 5 mm.

[0013] To further illustrate, in the above technical solution, the thickness of the third sealing member is 5 to 10 mm.

[0014] The beneficial effects of the present invention are as follows: the aluminum capacitor proposed by the present invention has a simple structure, and adopts a rib arranged on the inner side of the aluminum shell to effectively cooperate with the multi-layer sealing component to improve the built-in stability of the overall capacitor core, avoid leakage of insulating liquid, and increase the service life of the overall aluminum capacitor, which is convenient for wide promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 yes Figure 1 Schematic diagram of the expanded structure of the capacitor core.

[0018] The numbers in the accompanying drawings are: 1, shell, 2, capacitor core, 3, retaining ring, 4, first seal, 5, negative electrode pin, 6, second seal, 7, third seal, 8, concave reinforcing rib, 9, inner flange, 10, electrolytic paper, 11, positive electrode aluminum foil, 12, negative electrode aluminum foil, 13, aluminum stem, 14, electrolyte, 15, positive electrode pin. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] See Figure 1 and Figure 2 What is shown is an aluminum capacitor, comprising a shell 1 with an opening at the upper end, a capacitor core 2 embedded in the shell 1, the upper end of the capacitor core 2 is located on the inner wall of the shell 1, a retaining ring 3 is fixedly arranged along the circumferential direction, and a first sealing member 4 is embedded and fixed in the retaining ring 3; a sealing assembly is fixedly arranged on the upper end of the first sealing member 4, which is used for sealing and fixing the capacitor core 2; a positive pin 15 and a negative pin 5 are vertically inserted into the upper end of the capacitor core 2, respectively, and the positive pin 15 and the negative pin 5 pass through the first sealing member 4 and the sealing assembly from the inside to the outside in sequence and then are exposed.

[0021] The sealing assembly includes a second seal 6 and a third seal 7; the second seal 6 is a columnar structure, and the second seal 6 is embedded between the first seal 4 and the third seal 7. An inner concave reinforcing rib 8 is provided on the inner side of the upper part of the shell 1 along the circumferential direction, and the inner concave reinforcing rib 8 clamps the third seal 7 in the shell 1. An inner flange 9 is provided on the upper end of the shell 1 along the circumferential direction, and the inner flange 9 is embedded on the upper end surface of the third seal 7. The cross section of the retaining ring 3 is a trapezoidal structure, and the retaining ring 3 and the shell 1 are an integral structure. The cross section of the first seal 4 is an I-shaped structure, and the first seal 4 is clamped on the retaining ring 3. The capacitor core 2 includes an electrolytic paper 10, a positive aluminum foil 11, a negative aluminum foil 12, an aluminum stem 13 and an electrolyte 14; the electrolyte 14 is soaked in the electrolytic paper 10; the positive aluminum foil 11 is coated on one side of the electrolytic paper 10, and the aluminum stem 13 is fixedly arranged on the positive aluminum foil 11, and one end of the aluminum stem 13 is connected to the positive pin 15; the negative aluminum foil 12 is coated on the other side of the electrolytic paper 10, and the aluminum stem 13 is fixedly arranged on the negative aluminum foil 12, and one end of the aluminum stem 13 is fixedly connected to the negative pin 5. The aluminum stems 13 are fixedly arranged on the positive aluminum foil 11 and the negative aluminum foil 12 respectively by nailing. The thickness of the second sealing member 6 is 3 to 5 mm. The thickness of the third sealing member 7 is 5 to 10 mm.

[0022] Compared with traditional capacitors, this aluminum capacitor has the following advantages: compact and reasonable structure, the matching design of the retaining ring and the sealing component effectively ensures its overall sealing and avoids leakage of electrolyte; it improves the service life of the overall capacitor and is easy to promote and use.

[0023] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An aluminum capacitor, characterized in that: A shell having an opening at the upper end, wherein a capacitor core is embedded in the shell, wherein the upper end of the capacitor core is located on the inner wall of the shell and a retaining ring is fixedly arranged along the circumferential direction, wherein a first sealing member is embedded and fixed in the retaining ring; a sealing assembly is fixedly arranged on the upper end of the first sealing member for sealing and fixing the capacitor core; a positive electrode pin and a negative electrode pin are vertically inserted into the upper end of the capacitor core respectively, wherein the positive electrode pin and the negative electrode pin are exposed after passing through the first sealing member and the sealing assembly in sequence from the inside to the outside; the sealing assembly comprises a second sealing member and a third sealing member; the second sealing member is a columnar structure, wherein the second sealing member is embedded between the first sealing member and the third sealing member; an inner concave reinforcing rib is arranged on the inner side of the upper part of the shell along the circumferential direction, wherein the inner concave reinforcing rib is The ribs clamp the third seal in the shell; the upper end of the shell is provided with an inner flange along the circumferential direction, and the inner flange is embedded on the upper end surface of the third seal; the cross-section of the retaining ring is a trapezoidal structure, and the retaining ring and the shell are an integral structure; the cross-section of the first seal is an I-shaped structure, and the first seal is clamped on the retaining ring; the capacitor core comprises electrolytic paper, positive aluminum foil, negative aluminum foil, aluminum stem and electrolyte; the electrolytic paper is soaked with electrolyte; one side of the electrolytic paper is covered with a positive aluminum foil, an aluminum stem is fixedly provided on the positive aluminum foil, and one end of the aluminum stem is connected to the positive pin; the other side of the electrolytic paper is covered with a negative aluminum foil, an aluminum stem is fixedly provided on the negative aluminum foil, and one end of the aluminum stem is fixedly connected to the negative pin.

2. The aluminum capacitor according to claim 1, characterized in that: The aluminum stems are fixedly arranged on the positive electrode aluminum foil and the negative electrode aluminum foil respectively through nail patterns.

3. The aluminum capacitor according to claim 1, characterized in that: The thickness of the second sealing member is 3 to 5 mm.

4. The aluminum capacitor according to claim 1, characterized in that: The thickness of the third sealing member is 5 to 10 mm.

Images