CN219180359U

CN219180359U - Aluminum electrolytic capacitor

Info

Publication number: CN219180359U
Application number: CN202223403628.5U
Authority: CN
Inventors: 张博
Original assignee: Enwo New Energy Technology Shanghai Co ltd
Current assignee: Enwo New Energy Technology Shanghai Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-06-13
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses an aluminum electrolytic capacitor, which relates to the technical field of capacitors and comprises an aluminum electrolytic capacitor body, wherein the aluminum electrolytic capacitor body comprises a protection mechanism, the side surface of the protection mechanism is fixedly connected with a heat dissipation assembly, the upper surface of the protection mechanism is fixedly connected with a positive electrode, the upper surface of the protection mechanism is fixedly connected with a negative electrode, and the bottom surface of the inner wall of the protection mechanism is fixedly connected with a capacitor. According to the utility model, the heat dissipation shell, the first heat conduction plate, the heat collection plate, the second heat conduction plate and the heat dissipation plate are matched, the heat on the surface of the sleeve is conducted to the heat collection plate through the first heat conduction plate, then the heat collection plate can transfer the heat to the heat dissipation plate through the second heat conduction plate, and then the heat can be dissipated through the heat dissipation plate, so that the temperature inside the aluminum protection shell can be effectively reduced, the temperature inside the aluminum protection shell is prevented from being too high, a capacitor is prevented from being damaged, and the service life of the capacitor is shortened.

Description

Aluminum electrolytic capacitor

Technical Field

The utility model relates to the technical field of capacitors, in particular to an aluminum electrolytic capacitor.

Background

The aluminum electrolytic capacitor is made by taking an aluminum cylinder as a negative electrode, filling liquid electrolyte in the aluminum cylinder, and inserting a bent aluminum belt as a positive electrode. And a layer of oxide film is formed on the positive plate as a medium after direct-current voltage treatment. Its advantages are high capacity, high leakage current, poor stability, positive and negative polarities, and suitable for power supply filter or low-frequency circuit.

In the prior art, in the patent document with the publication number of CN213716738U, an aluminum electrolytic capacitor is proposed, the aluminum electrolytic capacitor comprises an aluminum shell and a leather plug, a beam waist is pressed at the opening of the aluminum shell, at least two raised reinforcing ribs are arranged on the inner wall surface of the beam waist at intervals, the reinforcing ribs are circumferentially arranged along the inner wall surface of the aluminum shell, the leather plug and the beam waist are matched and sealed with the opening of the aluminum shell, electrolyte is arranged in the aluminum shell, when the aluminum shell is subjected to cold extrusion molding, at least two reinforcing ribs are preformed at the contact position of the inner side of the aluminum shell and the leather plug, at least two reinforcing ribs are arranged on the inner wall surface of the aluminum shell, and the arc-shaped volatilization path of the previous electrolyte is changed into a meandering S-shaped volatilization path, so that the volatilization path is lengthened on one hand, and the volatilization of the electrolyte can be slowed down; on the other hand, a plurality of barriers are added on the original volatilization path, so that the normal volatilization of the electrolyte can be blocked.

The following problems exist in the prior art:

the capacitor can generate a large amount of heat in the use process, if the heat cannot be timely emitted, the service life of the capacitor can be greatly reduced, and explosion accidents can be easily caused, so that circuit faults are caused.

Disclosure of Invention

The present utility model provides an aluminum electrolytic capacitor to solve the problems set forth in the background art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides an aluminium electrolytic capacitor, includes aluminium electrolytic capacitor body, aluminium electrolytic capacitor body is including protection machanism, protection machanism's side fixedly connected with radiator unit, protection machanism's last fixedly connected with positive electrode, protection machanism's last fixedly connected with negative electrode, protection machanism's inner wall bottom surface fixedly connected with condenser, radiator unit is including heat-conducting plate one, one side and sheathed tube surface fixed connection of heat-conducting plate one, heat-conducting plate one's surface fixedly connected with heat dissipation casing, heat-conducting plate one's the other end fixedly connected with heat-collecting plate, through the cooperation of heat-conducting plate one and heat-collecting plate, heat-conducting plate two's opposite side fixedly connected with heat-conducting plate, heat-conducting plate two's one end runs through the inner wall of heat dissipation casing, heat-conducting plate two's the other end fixedly connected with heating panel, one side and the surface fixed connection of heat dissipation casing, can be discharged the inside heat of aluminium system protective housing through the heating panel.

The technical scheme of the utility model is further improved as follows: the protection machanism is including the aluminium system protective housing, the surface fixedly connected with expansion bag of aluminium system protective housing, the internal surface of expansion bag is connected with the inner wall of aluminium system protective housing, the inlet port has been seted up to the inner wall of expansion bag, through the mutual cooperation of aluminium system protective housing, expansion bag and inlet port, when the inside of aluminium system protective housing takes place the condenser explosion, can produce the high pressure in its inside, and these gases can enter into the inside of expansion bag through the inlet port, the expansion bag can take place the inflation, buffers the inside atmospheric pressure of aluminium system protective housing, prevents because violent atmospheric pressure changes, thereby the explosion phenomenon that causes.

The technical scheme of the utility model is further improved as follows: the capacitor comprises a sleeve, the bottom surface of the sleeve is fixedly connected with the bottom surface of the aluminum protective shell, and the inner wall of the sleeve is fixedly connected with an electrolyte plate.

The technical scheme of the utility model is further improved as follows: the electrolyte plate is characterized in that the first electrolytic paper is fixedly connected to the inner wall of the electrolyte plate, the cathode foil is fixedly connected to the inner wall of the first electrolytic paper, the terminal of the cathode foil is electrically connected with the terminal of the negative electrode, and the electrolyte plate can be electrolyzed through the cooperation of the cathode foil, the anode foil and the first electrolytic paper.

The technical scheme of the utility model is further improved as follows: the back of the electrolyte plate is fixedly connected with electrolyte paper II, the outer surface of the electrolyte paper II is fixedly connected with anode foil, the wiring end of the anode foil is electrically connected with the wiring end of the negative electrode, and the electrolyte plate can be electrolyzed through the cooperation of the anode foil and the electrolyte paper II.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:

1. the utility model provides an aluminum electrolytic capacitor, which adopts the matching of a heat dissipation shell, a first heat conducting plate, a heat collecting plate, a second heat conducting plate and a heat dissipation plate, wherein the heat on the surface of a sleeve can be conducted to the heat collecting plate through the first heat conducting plate, then the heat collecting plate can transfer the heat to the heat dissipation plate through the second heat conducting plate, then the heat can be dissipated through the heat dissipation plate, the temperature inside an aluminum protective shell can be effectively reduced, the excessive temperature inside the aluminum protective shell is prevented from damaging a capacitor, and the service life of the capacitor is shortened.

2. The utility model provides an aluminum electrolytic capacitor, which adopts the matching of an electrolyte plate, electrolyte paper I, cathode foil, anode foil and electrolyte paper II, and adopts the steps of sequentially stacking the electrolyte plate, the electrolyte paper I and the cathode foil, and then arranging the anode foil and the electrolyte paper II on the back of the electrolyte plate.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is a schematic diagram of a heat dissipating structure according to the present utility model;

fig. 4 is a schematic cross-sectional structure of a capacitor according to the present utility model.

In the figure: 1. an aluminum electrolytic capacitor body; 2. a protective mechanism; 21. an aluminum protective shell; 22. an inflation bladder; 23. an air inlet hole; 3. a positive electrode; 4. a negative electrode; 5. a heat dissipation assembly; 51. a heat dissipation housing; 52. a first heat conducting plate; 53. a heat collecting plate; 54. a second heat conducting plate; 55. a heat dissipation plate; 6. a capacitor; 61. an electrolyte plate; 62. electrolytic paper I; 63. a cathode foil; 64. an anode foil; 65. electrolytic paper II; 66. a sleeve.

Detailed Description

The utility model is further illustrated by the following examples:

examples

As shown in fig. 1-4, the utility model provides an aluminum electrolytic capacitor, which comprises an aluminum electrolytic capacitor body 1, the aluminum electrolytic capacitor body 1 comprises a protection mechanism 2, a heat dissipation component 5 is fixedly connected to the side surface of the protection mechanism 2, a positive electrode 3 is fixedly connected to the upper surface of the protection mechanism 2, a negative electrode 4 is fixedly connected to the upper surface of the protection mechanism 2, a capacitor 6 is fixedly connected to the bottom surface of the inner wall of the protection mechanism 2, the protection mechanism 2 comprises an aluminum protective shell 21, an expansion bag 22 is fixedly connected to the outer surface of the aluminum protective shell 21, an air inlet hole 23 is formed in the inner wall of the expansion bag 22, the capacitor 6 comprises a sleeve 66, the bottom surface of the sleeve 66 is fixedly connected to the bottom surface of the aluminum protective shell 21, an electrolyte plate 61 is fixedly connected to the inner wall of the sleeve 66, an electrolyte paper one 62 is fixedly connected to the inner wall of the electrolyte one 62, a terminal of the cathode foil 63 is electrically connected to the terminal of the negative electrode 4, an electrolyte paper two 65 is fixedly connected to the back surface of the electrolyte plate 61, an anode foil 64 is fixedly connected to the outer surface of the electrolyte paper two 65, and the anode foil 64 is electrically connected to the terminal 64 of the terminal 4.

Further, the heat dissipation assembly 5 includes a first heat conduction plate 52, one side of the first heat conduction plate 52 is fixedly connected with the outer surface of the sleeve 66, the outer surface of the first heat conduction plate 52 is fixedly connected with the heat dissipation housing 51, the other end of the first heat conduction plate 52 is fixedly connected with the heat collection plate 53, the other side of the heat collection plate 53 is fixedly connected with a second heat conduction plate 54, one end of the second heat conduction plate 54 penetrates through the inner wall of the heat dissipation housing 51, the other end of the second heat conduction plate 54 is fixedly connected with the heat dissipation plate 55, and one side of the heat dissipation plate 55 is fixedly connected with the outer surface of the heat dissipation housing 51.

The working principle of the aluminum electrolytic capacitor will be described in detail.

As shown in fig. 1 to 4, when the aluminum electrolytic capacitor is used, the positive electrode 3 and the negative electrode 4 can be connected with a circuit, in the use process, heat can be generated on the surface of the sleeve 66, the heat on the surface of the sleeve 66 can be transmitted to the heat collecting plate 53 through the first heat conducting plate 52, then the heat collecting plate 53 can transmit the heat to the heat radiating plate 55 through the second heat conducting plate 54, then the heat can be radiated through the heat radiating plate 55, the temperature inside the aluminum protective shell 21 can be effectively reduced, the excessive high temperature inside the aluminum protective shell 21 is prevented, the capacitor is damaged, the service life of the capacitor is reduced, if in the use process, when the capacitor explodes inside the aluminum protective shell 21, high air pressure is generated inside the aluminum protective shell, and the air enters the inside the expansion bag 22 through the air inlet hole 23, the expansion bag 22 is expanded, the air pressure inside the aluminum protective shell 21 is buffered, and explosion phenomena caused by severe air pressure change are prevented.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims

1. An aluminum electrolytic capacitor comprises an aluminum electrolytic capacitor body (1), wherein the aluminum electrolytic capacitor body (1) comprises a protection mechanism (2), and is characterized in that: the side fixedly connected with radiator unit (5) of protection machanism (2), the upper surface fixedly connected with positive electrode (3) of protection machanism (2), the upper surface fixedly connected with negative electrode (4) of protection machanism (2), the inner wall bottom surface fixedly connected with condenser (6) of protection machanism (2), radiator unit (5) are including heat-conducting plate one (52), the surface fixed connection of one side and sleeve pipe (66) of heat-conducting plate one (52), the surface fixed connection of heat-conducting plate one (52) has heat dissipation casing (51), the other end fixedly connected with heat-collecting plate (53) of heat-conducting plate one (52), the opposite side fixedly connected with heat-conducting plate two (54) of heat-collecting plate two (54), the inner wall of heat dissipation casing (51) is run through to the one end of heat-conducting plate two (54), the other end fixedly connected with heating panel (55), one side and the surface fixed connection of heat dissipation casing (51) of heating panel (55).

2. An aluminum electrolytic capacitor according to claim 1, wherein: the protection mechanism (2) comprises an aluminum protection shell (21), an expansion bag (22) is fixedly connected to the outer surface of the aluminum protection shell (21), the inner surface of the expansion bag (22) is connected with the inner wall of the aluminum protection shell (21), and an air inlet hole (23) is formed in the inner wall of the expansion bag (22).

3. An aluminum electrolytic capacitor according to claim 1, wherein: the capacitor (6) comprises a sleeve (66), the bottom surface of the sleeve (66) is fixedly connected with the bottom surface of the aluminum protective shell (21), and the inner wall of the sleeve (66) is fixedly connected with an electrolyte plate (61).

4. An aluminum electrolytic capacitor according to claim 3, wherein: an electrolytic paper I (62) is fixedly connected to the inner wall of the electrolyte plate (61), a cathode foil (63) is fixedly connected to the inner wall of the electrolytic paper I (62), and a terminal of the cathode foil (63) is electrically connected with a terminal of the negative electrode (4).

5. An aluminum electrolytic capacitor according to claim 3, wherein: the back of electrolyte board (61) fixedly connected with electrolysis paper II (65), the surface fixedly connected with anode foil (64) of electrolysis paper II (65), the wiring end of anode foil (64) and the wiring end electric connection of negative electrode (4).