Compression-resistant aluminum electrolytic capacitor structure

Abstract

The utility model relates to the technical field of aluminum electrolytic capacitors, in particular to a compression-resistant aluminum electrolytic capacitor structure, which comprises a shell, a capacitor body, a movable plate and a tension component. The shell is provided with a sealing cover in sealing fit with the opening of the shell, the capacitor body is located in the sealing cover, pins of the capacitor body penetrate through the sealing cover and are in sliding connection with the sealing cover, and the capacitor body abuts against the sealing cover in a sealing mode. The movable plate is elastically and slidably arranged in the shell through the tension assembly, a liquid heat conduction agent is poured into the lower half area of the movable plate in the inner cavity of the shell, the bottom of the capacitor body abuts against the movable plate, a through hole is formed in the movable plate, and an oil sealing film is arranged in the through hole. According to the utility model, the heat-conducting medium and the spiral heat-conducting plate are utilized to conduct the heat generated by the capacitor body to the shell for heat dissipation, so that not only is a good pressure-resistant function achieved, but also efficient heat dissipation of the capacitor body can be maintained at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolytic capacitors, in particular to a compression-resistant aluminum electrolytic capacitor structure. Background Art

[0002] Capacitors are energy storage components used for tuning, filtering, coupling, bypassing, energy conversion and delay in circuits. Aluminum electrolytic capacitors are capacitors made of an aluminum cylinder as the negative electrode, filled with liquid electrolyte, and a curved aluminum strip as the positive electrode. Existing aluminum electrolytic capacitors have a thin structure and poor compressive resistance, and need to be improved.

[0003] The Chinese patent with the authorization announcement number CN217902907U discloses a pressure-resistant aluminum electrolytic capacitor, including a capacitor body, the capacitor body is connected with an anode pin and a cathode pin; it also includes a shell, a pressure-resistant component and an insulating end cap; the shell has a accommodating cavity, the shell is equipped with a capacitor body limiting structure, the capacitor body is placed in the capacitor body limiting structure, the pressure-resistant component is located in the shell and on the outside of the capacitor body limiting structure; the pressure-resistant component includes an external pressure-resistant structure and an internal pressure-resistant structure, the external pressure-resistant structure and the internal pressure-resistant structure are fixedly connected by a number of pressure-resistant rings arranged along the vertical interval; the insulating end cap is fixedly connected to the shell, the anode pin and the cathode pin pass through the insulating end cap, and the anode pin and the cathode pin are fixedly connected to the insulating end cap. This pressure-resistant aluminum electrolytic capacitor has the advantages of being able to improve the overall structural strength and pressure resistance, and better extend the service life.

[0004] However, the device still has some shortcomings: there is a certain cavity between the inner wall of the structural shell and the capacitor body, and after heat is accumulated in the cavity, the heat is slowly dissipated. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and propose a pressure-resistant aluminum electrolytic capacitor structure.

[0006] The technical solution of the utility model is a compression-resistant aluminum electrolytic capacitor structure, which comprises a shell, a capacitor body, a movable plate and a tension component.

[0007] A sealing cover which is sealed with the opening of the shell is arranged on the shell, the capacitor body is located in the sealing cover, the pins of the capacitor body pass through the sealing cover and are slidably connected with the sealing cover, and the capacitor body is sealed and abutted with the sealing cover.

[0008] The movable plate is elastically slidably arranged in the shell through a tension component. The inner cavity of the shell is located in the lower half of the movable plate and is filled with liquid thermal conductor. The bottom of the capacitor body abuts against the movable plate. A through hole is arranged on the movable plate, and an oil sealing film is arranged in the through hole.

[0009] Preferably, a spiral heat conducting plate is arranged in the shell, the outer wall of the spiral heat conducting plate is connected to the inner wall of the shell, and the capacitor body is located in the middle channel of the spiral heat conducting plate and abuts against the inner wall thereof.

[0010] Preferably, an annular groove is provided on the outside of the shell, a plurality of heat dissipation fins are evenly spaced in the annular groove, the outer edges of the heat dissipation fins are flush with the outer edge of the shell, and smooth chamfers are provided on the outside of the heat dissipation fins.

[0011] Preferably, the tensioning assembly comprises two groups.

[0012] Preferably, the tension assembly includes a sleeve, an inner rod and a spring. A limit block is slidably arranged in the sleeve, the bottom of the inner rod is connected to the limit block, the top of the inner rod passes through the sleeve and is connected to the movable plate, the spring is located in the sleeve, the bottom of the spring abuts against the bottom of the inner cavity of the sleeve, and the top of the spring abuts against the bottom of the limit block.

[0013] Preferably, two slots with openings facing upward are symmetrically arranged in the shell, and two card slots connected to the corresponding side slots are symmetrically arranged in the shell, and two insertion rods are symmetrically arranged at the bottom of the cover, the insertion rods are respectively inserted into the corresponding side slots and slidably connected thereto, and card blocks are elastically slidably arranged in the insertion rods on both sides, and the card blocks on both sides are respectively inserted into the corresponding side card slots.

[0014] Preferably, a sealing ring is provided at the bottom of the sealing cover, and the inner wall of the sealing ring is sealed with the outer wall of the capacitor body.

[0015] Compared with the prior art, the utility model has the following beneficial technical effects:

[0016] By setting a spiral heat-conducting plate, the cavity between the inner cavity of the shell and the outer wall of the capacitor body is reduced by the spiral heat-conducting plate, so that the heat-conducting medium can fill the inner cavity. In addition, in the utility model, after the cover is aligned with the shell, the cover is used to press down the capacitor body, thereby driving the movable plate to slide down. At this time, the pressure on the sealing oil film gradually increases until it breaks, and the liquid heat-conducting medium surges up along the through hole. The heat-conducting medium fills the capacitor body and the inner cavity space of the shell. The heat generated by the capacitor body is transferred to the shell and dissipated by the heat-conducting medium and the spiral heat-conducting plate. This structure not only has a good pressure resistance function, but also can maintain efficient heat dissipation of the capacitor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the connection between the shell, the cover and the capacitor body;

[0019] Figure 3 1 is the internal structure diagram of the shell (section view);

[0020] Figure 4 It is the structural diagram of the tension component;

[0021] Figure 5 It is a structural diagram of embodiment 2.

[0022] Figure numerals: 1, shell; 101, annular groove; 102, slot; 103, card slot; 2, heat sink fin; 3, cover; 301, sealing ring; 4, capacitor body; 5, spiral heat conduction plate; 6, movable plate; 601, through hole; 7, oil sealing film; 8, tension assembly; 801, sleeve; 802, inner rod; 803, limit block; 804, spring; 9, plug rod; 10, card block. DETAILED DESCRIPTION

[0023] Embodiment 1

[0024] like Figure 1-Figure 4 As shown, the utility model proposes a compression-resistant aluminum electrolytic capacitor structure, including a shell 1, a capacitor body 4, a movable plate 6 and a tension assembly 8. A cover 3 is provided on the shell 1 to seal with its opening, the capacitor body 4 is located in the cover 3, the pins of the capacitor body 4 pass through the cover 3 and are slidably connected thereto, and the capacitor body 4 is sealed and abutted against the cover 3. A spiral heat-conducting plate 5 is provided in the shell 1, the outer wall of the spiral heat-conducting plate 5 is connected to the inner wall of the shell 1, and the capacitor body 4 is located in the middle channel of the spiral heat-conducting plate 5 and abuts against its inner wall. An annular groove 101 is provided on the outside of the shell 1, and a plurality of heat-dissipating fins 2 are evenly spaced in the annular groove 101, the outer edge of the heat-dissipating fin 2 is flush with the outer edge of the shell 1, and a smooth chamfer is provided on the outside of the heat-dissipating fin 2. The movable plate 6 is elastically slidably arranged in the housing 1 through the tension component 8. The inner cavity of the housing 1 is located in the lower half of the movable plate 6 and is filled with liquid thermal conductive agent. The bottom of the capacitor body 4 abuts against the movable plate 6. A through hole 601 is arranged on the movable plate 6, and an oil sealing film 7 is arranged in the through hole 601. The tension component 8 includes two groups, and the tension component 8 includes a sleeve 801, an inner rod 802 and a spring 804. A limit block 803 is slidably arranged in the sleeve 801, the bottom of the inner rod 802 is connected to the limit block 803, the top of the inner rod 802 passes through the sleeve 801 and is connected to the movable plate 6, the spring 804 is located in the sleeve 801, the bottom of the spring 804 abuts against the bottom of the inner cavity of the sleeve 801, and the top of the spring 804 abuts against the bottom of the limit block 803.

[0025] In this embodiment, the capacitor body 4 is inserted into the shell 1 along the inner side of the spiral heat-conducting plate 5 and pressed against the movable plate 6, and then the pins of the capacitor body 4 are passed through the pin holes of the cover 3. After the cover 3 is aligned with the shell 1, the opening of the shell 1 is kept facing upward, and the cover 3 is pressed down. The capacitor body 4 is pressed down by the cover 3, and the movable plate 6 slides down due to the squeeze of the capacitor body 4. At this time, the pressure on the sealing oil film 7 gradually increases until it breaks, and the liquid heat-conducting medium rises along the through hole 601. The heat-conducting medium fills the capacitor body 4 and the inner cavity space of the shell 1, and the heat generated by the capacitor body 4 is conducted to the shell 1 and dissipated by the heat-conducting medium and the spiral heat-conducting plate 5. This structure not only has good pressure resistance, but also can maintain efficient heat dissipation of the capacitor body 4.

[0026] Embodiment 2

[0027] like Figure 5 As shown, the structure of a compression-resistant aluminum electrolytic capacitor proposed by the utility model, compared with the first embodiment, two slots 102 with openings facing upward are symmetrically arranged in the shell, and two card slots 103 connected to the corresponding side slots 102 are symmetrically arranged in the shell 1, and two insertion rods 9 are symmetrically arranged at the bottom of the cover 3, and the insertion rods 9 are respectively inserted into the corresponding side slots 102 and slidably connected thereto, and card blocks 10 are elastically slidably arranged in the insertion rods 9 on both sides, and the card blocks 10 on both sides are respectively inserted into the corresponding side card slots 103. A sealing ring 301 is arranged at the bottom of the cover 3, and the inner wall of the sealing ring 301 is sealed with the outer wall of the capacitor body 4.

[0028] In this embodiment, when assembling the capacitor, the capacitor body 1 is placed in the shell 1, and after applying sealant to the cover 3 and the open end surface of the shell 1, the insertion rods 9 on both sides are aligned with the corresponding slots 102, and the cover 3 is quickly pressed to make the card block 10 snap into the card slot 103. At this time, the cover 3 and the shell 1 are locked by the card block 10, and the assembly can be completed without applying external force. Under the limitation of this structure, good sealing and stability can be maintained between the cover 3 and the shell 1, and there is no need to apply pressure to them with the help of a pressing tool while waiting for the glue to dry.

[0029] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A compressive aluminum electrolytic capacitor structure, characterized in that: It comprises a housing (1), a capacitor body (4), a movable plate (6) and a tension component (8); A sealing cover (3) is provided on the housing (1) and is in sealing cooperation with the opening thereof; the capacitor body (4) is located inside the sealing cover (3); pins of the capacitor body (4) penetrate through the sealing cover (3) and are slidably connected thereto; the capacitor body (4) and the sealing cover (3) are in sealing contact; The movable plate (6) is elastically slidably arranged in the housing (1) through a tension component (8); the inner cavity of the housing (1) is located in the lower half of the movable plate (6) and is filled with a liquid thermal conductor; the bottom of the capacitor body (4) is in contact with the movable plate (6); a through hole (601) is arranged on the movable plate (6); and an oil sealing film (7) is arranged in the through hole (601).

2. A compression-resistant aluminum electrolytic capacitor structure according to claim 1, characterized in that: A spiral heat conducting plate (5) is arranged in the shell (1); the outer wall of the spiral heat conducting plate (5) is connected to the inner wall of the shell (1); the capacitor body (4) is located in the middle channel of the spiral heat conducting plate (5) and abuts against the inner wall thereof.

3. The compression-resistant aluminum electrolytic capacitor structure according to claim 1, characterized in that: An annular groove (101) is arranged outside the shell (1), a plurality of heat dissipation fins (2) are evenly spaced inside the annular groove (101), the outer edges of the heat dissipation fins (2) are flush with the outer edge of the shell (1), and smooth chamfers are arranged outside the heat dissipation fins (2).

4. The compression-resistant aluminum electrolytic capacitor structure according to claim 1, characterized in that: The tensioning assembly (8) comprises two groups.

5. A compression-resistant aluminum electrolytic capacitor structure according to claim 4, characterized in that: The tension component (8) comprises a sleeve (801), an inner rod (802) and a spring (804); a limit block (803) is slidably arranged in the sleeve (801), the bottom of the inner rod (802) is connected to the limit block (803), the top of the inner rod (802) passes through the sleeve (801) and is connected to the movable plate (6), the spring (804) is located in the sleeve (801), the bottom of the spring (804) abuts against the bottom of the inner cavity of the sleeve (801), and the top of the spring (804) abuts against the bottom of the limit block (803).

6. The compression-resistant aluminum electrolytic capacitor structure according to claim 1, characterized in that: Two slots (102) with openings facing upward are symmetrically arranged in the shell, and two card slots (103) communicating with the corresponding side slots (102) are symmetrically arranged in the shell (1). Two insertion rods (9) are symmetrically arranged at the bottom of the cover (3), and the insertion rods (9) are respectively inserted into the corresponding side slots (102) and slidably connected thereto. Card blocks (10) are elastically slidably arranged in the insertion rods (9) on both sides, and the card blocks (10) on both sides are respectively inserted into the corresponding side card slots (103).

7. The compression-resistant aluminum electrolytic capacitor structure according to claim 1, characterized in that: A sealing ring (301) is provided at the bottom of the sealing cover (3), and the inner wall of the sealing ring (301) is sealedly matched with the outer wall of the capacitor body (4).

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