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CN-224203965-U - Aluminum electrolytic capacitor with higher current-carrying capacity

CN224203965UCN 224203965 UCN224203965 UCN 224203965UCN-224203965-U

Abstract

The utility model discloses an aluminum electrolytic capacitor with higher current carrying capacity, which comprises a bearing unit, wherein the bearing unit comprises an aluminum shell and a sealing cover fixedly connected to the bottom of an inner cavity of the aluminum shell, two guide pins penetrating through the sealing cover are riveted at the bottom of the sealing cover, a core bag is arranged in the inner cavity of the aluminum shell, an auxiliary unit comprises two limiting rings fixedly connected to the inner wall of the aluminum shell, the two limiting rings are respectively sleeved at the top and the bottom of the core bag, a plurality of annular equally distributed notches are formed in the side walls of the two limiting rings, and blocking sections are cut into the inner walls of the two limiting rings. According to the utility model, the core package is inserted into the inner rings of the two limiting rings, so that the core package is constrained by the limiting rings and is difficult to expand, and the increase of gaps among the anode foil, the cathode foil and the electrolytic paper is avoided, so that the capacitor can still maintain higher current carrying capacity when the capacitor is used for a long time.

Inventors

  • HE ZHENYE

Assignees

  • 江苏易莱电容器有限公司

Dates

Publication Date
20260505
Application Date
20241230

Claims (6)

  1. 1. An aluminum electrolytic capacitor having a high current carrying capacity, comprising: The bearing unit comprises an aluminum shell (101) and a sealing cover (102) fixedly connected to the bottom of an inner cavity of the aluminum shell (101), wherein two guide pins (103) penetrating through the sealing cover (102) are riveted at the bottom of the sealing cover (102), and a core bag (104) is arranged in the inner cavity of the aluminum shell (101); Auxiliary unit (200), it includes two spacing rings (201) of fixed connection on aluminum hull (101) inner wall, two spacing rings (201) are overlapped respectively and are established at the top and the bottom of core package (104), two a plurality of breach (202) that are annular equidistance and distribute are all seted up to the lateral wall of spacing ring (201), two the inner wall of spacing ring (201) has all cut and has been intercepted face (203), the middle part of spacing ring (201) inner circle is protruding to the center department of spacing ring (201).
  2. 2. The aluminum electrolytic capacitor with higher current carrying capacity as set forth in claim 1, wherein a plurality of aluminum bars (204) are fixedly connected between opposite surfaces of the two limiting rings (201), and the aluminum bars (204) are distributed in an annular equidistant manner and are in contact with the core pack (104).
  3. 3. The aluminum electrolytic capacitor with higher current carrying capacity as set forth in claim 1, wherein a T-shaped plate (205) penetrating through the sealing cover (102) is fixedly connected to the bottom of the sealing cover (102), and two guide pins (103) penetrate through the T-shaped plate (205).
  4. 4. The aluminum electrolytic capacitor with higher current carrying capacity as set forth in claim 3, wherein a plurality of aluminum plates (206) are fixedly connected to the top of the T-shaped plate (205), and each aluminum plate (206) penetrates through the sealing cover (102) and is fixedly connected with a limiting ring (201) located at the bottom.
  5. 5. The aluminum electrolytic capacitor with higher current carrying capacity as recited in claim 1, wherein the thickness of the top of the aluminum case (101) is smaller than the thickness of the side wall of the aluminum case (101), and a three-fork groove (207) is formed in the top of the aluminum case (101).
  6. 6. The aluminum electrolytic capacitor with higher current carrying capacity as recited in claim 5, wherein a plurality of semicircular aluminum balls (208) are fixedly connected to the top of the aluminum case (101), and the plurality of semicircular aluminum balls (208) are divided into three groups and are staggered with the three-fork grooves (207).

Description

Aluminum electrolytic capacitor with higher current-carrying capacity Technical Field The utility model relates to the technical field of aluminum electrolytic capacitors, in particular to an aluminum electrolytic capacitor with higher current carrying capacity. Background The aluminum electrolytic capacitor is made by taking an aluminum cylinder as a negative electrode, filling liquid electrolyte in the aluminum cylinder, inserting a bent aluminum strip as a positive electrode, and carrying out direct-current voltage treatment to form a layer of oxide film on the positive electrode plate as a medium. The high-voltage power supply has the characteristics of large capacity, large leakage current, poor stability and positive and negative polarities, and is suitable for power supply filtering or low-frequency circuits, and the positive and negative polarities are not connected reversely when the high-voltage power supply is used. In the winding or lamination process of the core package, the lamination between the anode foil, the cathode foil and the electrolytic paper is tighter, the resistance of ions in the transmission process can be reduced, and charges are transferred between the electrode and the electrolytic solution more smoothly, so that the performance of the capacitor under high current is improved, the existing core package is usually directly placed in an aluminum shell, and in the long-term use process, the core package is thermally expanded due to the increase of the internal pressure of the aluminum shell, so that the gap between the anode foil, the cathode foil and the electrolytic paper is increased, and the current carrying capacity is reduced. Disclosure of utility model This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model. The present utility model has been made in view of the above-described problems with the conventional aluminum electrolytic capacitor having a high current carrying capacity. Therefore, the utility model aims to provide an aluminum electrolytic capacitor with higher current-carrying capacity, which is suitable for solving the problem that the current-carrying capacity is reduced because the core pack is thermally expanded due to the increase of the internal pressure of an aluminum shell in the long-term use process of the existing core pack, so that the gaps among an anode foil, a cathode foil and electrolytic paper are increased. In order to solve the technical problems, the utility model provides the following technical scheme that the aluminum electrolytic capacitor with higher current carrying capacity comprises: The bearing unit comprises an aluminum shell and a sealing cover fixedly connected to the bottom of the inner cavity of the aluminum shell, two guide pins penetrating through the sealing cover are riveted at the bottom of the sealing cover, and a core bag is arranged in the inner cavity of the aluminum shell; The auxiliary unit comprises two limiting rings fixedly connected to the inner wall of the aluminum shell, the two limiting rings are respectively sleeved at the top and the bottom of the core bag, a plurality of notches which are distributed in an annular equidistant mode are formed in the side walls of the limiting rings, the inner walls of the limiting rings are cut to form blocking sections, and the middle part of the inner ring of the limiting ring protrudes towards the center of the limiting ring. As an optimal scheme of the aluminum electrolytic capacitor with higher current carrying capacity, a plurality of aluminum bars are fixedly connected between the opposite surfaces of the two limiting rings, and the aluminum bars are distributed in an annular equidistant manner and are in contact with the core package. As an optimal scheme of the aluminum electrolytic capacitor with higher current carrying capacity, the bottom of the sealing cover is fixedly connected with a T-shaped plate penetrating through the sealing cover, and two guide pins penetrate through the T-shaped plate. As an optimal scheme of the aluminum electrolytic capacitor with higher current carrying capacity, the top of the T-shaped plate is fixedly connected with a plurality of aluminum plates, and each aluminum plate penetrates through the sealing cover and is fixedly connected with the limiting ring at the bottom. As an optimal scheme of the aluminum electrolytic capacitor with higher current carrying capacity, the thickness of the top of the aluminum shell is smaller than that of the side wall of the aluminum shell, and a three-fork groove is formed in the top of the aluminum shell. As an optimal scheme of the aluminum electrolytic capacitor with higher current carrying capacity, the to