An explosion-proof aluminum shell for capacitors

Abstract

This utility model discloses an explosion-proof aluminum shell for a capacitor, comprising a first shell and a second shell. The first shell is disposed inside the second shell, and a cover plate is provided at the upper end of the second shell. The cover plate is bolted to the second shell. An exhaust structure is provided inside the second shell between the first shell and the cover plate to discharge gas between the first shell and the second shell. The exhaust structure includes a movable plate and a top rod. The movable plate is movably disposed inside the second shell, and the top rod is fixedly disposed on the movable plate. A support structure is provided between the first shell and the second shell. The support structure includes a first mounting block and an intermediate block. The first mounting block is fixedly disposed at both ends of the intermediate block. Multiple exhaust holes are provided on the first shell. The support structure supports the first shell and the second shell, facilitating the connection between the first shell and the second shell.

Description

Technical Field

[0001] This utility model relates to the field of capacitors, and more specifically, to an explosion-proof aluminum shell for capacitors. Background Technology

[0002] Capacitors are very common in circuit structures. A capacitor is generally composed of an outer aluminum shell and an internal capacitor element. The capacitor element is installed inside the aluminum shell by snap-fit, and the aluminum shell protects the capacitor element. The aluminum shell is an important component of the capacitor. During the use of the capacitor, damage to the internal components may cause liquid leakage and gas generation. When the gas inside the capacitor increases and the gas pressure rises, it can easily cause the aluminum shell to explode, thereby damaging the capacitor. Existing aluminum shells are generally just aluminum shell structures and do not have explosion-proof functions. At the same time, the existing aluminum shell structure is generally a single-layer shell structure. When the capacitor is subjected to external impact, the shell directly squeezes the internal components, which can easily cause damage to the internal components or cause the capacitor to explode, thus affecting the long-term use of the capacitor. Utility Model Content

[0003] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides an explosion-proof aluminum shell for capacitors to solve the technical problems mentioned in the background art.

[0004] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an explosion-proof aluminum shell for a capacitor, comprising a first shell and a second shell, wherein the first shell is disposed inside the second shell, and a cover plate is disposed at the upper end of the second shell, the cover plate being bolted to the second shell, and an exhaust structure is disposed inside the second shell between the first shell and the cover plate, thereby venting the gas between the first shell and the second shell. The exhaust structure includes a movable plate and a top rod. The movable plate is movably disposed within the second housing, and the top rod is fixedly disposed on the movable plate. A support structure is provided between the first housing and the second housing. The support structure includes a first mounting block and an intermediate block. The first mounting block is fixedly disposed at both ends of the intermediate block. The first housing has multiple exhaust holes. The support structure supports the first housing and the second housing, facilitating the connection between the first housing and the second housing.

[0005] The present invention is further configured such that an extension plate is fixedly provided at the lower end of the first housing, the extension plate and the second housing cooperate with each other, a limiting groove is provided on the extension plate, and a limiting block is fixedly provided at the lower end of the second housing, the limiting block and the limiting groove cooperate with each other, thereby facilitating the connection between the first housing and the second housing.

[0006] The present invention is further configured such that a connecting hole is provided on the extension plate, a connecting post is fixedly provided at the lower end of the second housing, and multiple connecting posts and connecting holes are provided. The connecting posts and connecting holes cooperate with each other, and the top end of the connecting post is provided with a thread, thereby facilitating the fixing of the first housing and the second housing.

[0007] The present invention is further configured such that mounting grooves are provided on the outer wall of the first housing and the inner wall of the second housing, the first mounting block cooperates with the mounting groove, a mating plate is fixedly provided at the lower end of the cover plate, and a second mounting block is fixedly provided on the mating plate, the second mounting block cooperates with the mounting groove, thereby facilitating the installation of the cover plate.

[0008] The present invention is further configured such that both the movable plate and the top rod are provided with vent holes, the vent holes on the movable plate are connected to the vent holes on the top rod, and an extension tube is fixedly provided on the cover plate, and a blocking block is provided at the top of the extension tube, so as to facilitate the formation of an exhaust structure through the extension tube and the blocking block.

[0009] The present invention is further configured such that the extension tube is hollow inside, the extension tube and the top rod cooperate with each other, and a connecting block is provided between the blocking block and the inner wall of the extension tube. Multiple connecting blocks are provided, thereby facilitating the installation of the blocking block on the extension tube.

[0010] The present invention is further configured such that a cutting blade is provided at the top end of the top rod, the cutting blade is fixedly mounted on the top rod, and the top rod and the connecting block cooperate with each other, thereby cutting the connecting block through the cutting blade, which facilitates the falling of the baffle plate.

[0011] The present invention is further configured such that there are two intermediate blocks between the two mounting blocks, and the two intermediate blocks are fixedly connected. The intermediate blocks are provided with notches, and there are multiple notches, so that the intermediate blocks can deform when they are subjected to impact.

[0012] (III) Beneficial Effects Compared with the prior art, the present invention provides an explosion-proof aluminum shell for capacitors, which has the following advantages: 1. This utility model, by setting up a first housing and a second housing, places the internal parts required for the capacitor inside the second housing. During installation of the first and second housings, the second housing is mounted on an extension plate on the first housing through the cooperation of a limiting block and a limiting groove. The first and second housings are connected through the cooperation of a connecting post and a connecting hole, and the first and second housings are fixed by the threaded engagement of a nut with the top of the connecting post. An intermediate block is installed between the first and second housings through the cooperation of a first mounting block and a mounting groove. A movable plate is placed inside the second housing and positioned on top of the first housing. A mating plate is provided on the cover plate to cooperate with the interior of the second housing. The cover plate is fixed to the second housing with bolts, thus completing the installation of the entire capacitor aluminum shell. This facilitates the replacement of the aluminum shell portion after damage, thereby increasing the service life of the entire capacitor shell.

[0013] 2. By setting up a support structure, this utility model provides the first layer of protection for the internal components of the capacitor when the entire capacitor casing is subjected to external impact or compression. The impact force deforms the second casing, thereby reducing the impact on the first casing. When the impact force is large, the second casing compresses the middle block, and the notch on the middle block guides the deformation of the middle block, thereby dissipating part of the impact through the deformation of the middle block. The first casing provides the final layer of protection for the internal components of the capacitor, thus facilitating the protection of the main internal components of the capacitor when it is subjected to impact.

[0014] 3. By setting up an exhaust structure, when the capacitor is damaged, the internal components generate a large amount of gas. The gas enters the space between the first and second housings through the exhaust port in the first housing. The gas pressure inside the second housing increases, which pushes the moving plate to rise inside the second housing. This causes the push rod on the moving plate to enter the extension tube on the cover plate. The push rod rises along the extension tube and cuts the connecting block between the shielding plate and the extension tube through the cutting blade at the top of the push rod. The gas is then discharged into the external environment through the vent holes on the moving plate and the push rod, thereby reducing the continued increase of the gas pressure inside the capacitor, reducing the risk of capacitor explosion, and facilitating the use of the capacitor. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of an explosion-proof aluminum shell for a capacitor; Figure 2 This is a schematic diagram of the mating structure of the first and second shells of an explosion-proof aluminum capacitor shell; Figure 3 A schematic diagram of the structure of the first housing of an explosion-proof aluminum capacitor shell; Figure 4This is a schematic diagram of the mating structure of the second shell and the cover plate of an explosion-proof aluminum capacitor shell; Figure 5 This is a schematic diagram of the structure of a movable plate for an explosion-proof aluminum shell of a capacitor.

[0016] In the diagram: 1. First housing; 2. Second housing; 3. Cover plate; 4. Moving plate; 5. Top rod; 6. First mounting block; 7. Intermediate block; 8. Vent hole; 9. Extension plate; 10. Limiting groove; 11. Limiting block; 12. Connecting hole; 13. Connecting post; 14. Mounting groove; 15. Mating plate; 16. Second mounting block; 17. Vent hole; 18. Extension tube; 19. Blocking block; 20. Connecting block; 21. Cutting blade; 22. Notched hole. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0020] Please see Figure 1-5 An explosion-proof aluminum shell for a capacitor includes a first shell 1 and a second shell 2. The first shell 1 is disposed inside the second shell 2. A cover plate 3 is disposed at the upper end of the second shell 2. The cover plate 3 is bolted to the second shell 2. An exhaust structure is disposed inside the second shell 2 between the first shell 1 and the cover plate 3. The exhaust structure includes a movable plate 4 and a top rod 5. The movable plate 4 is movably disposed inside the second housing 2, and the top rod 5 is fixedly disposed on the movable plate 4. A support structure is provided between the first housing 1 and the second housing 2. The support structure includes a first mounting block 6 and an intermediate block 7. The first mounting block 6 is fixedly disposed at both ends of the intermediate block 7. The first housing 1 is provided with exhaust holes 8, and multiple exhaust holes 8 are provided.

[0021] In this embodiment, the main structure of the entire explosion-proof aluminum shell is formed by the first shell 1 and the second shell 2.

[0022] More specifically, the gas between the first housing 1 and the second housing 2 is discharged through the exhaust structure, and the first housing 1 and the second housing 2 are supported by the support structure, which facilitates the connection between the first housing 1 and the second housing 2.

[0023] Please see Figures 1-5 As an implementation method for explosion protection of capacitors: Mounting grooves 14 are provided on the outer wall of the first housing 1 and the inner wall of the second housing 2. The first mounting block 6 cooperates with the mounting groove 14. A mating plate 15 is fixedly provided at the lower end of the cover plate 3. A second mounting block 16 is fixedly provided on the mating plate 15. The second mounting block 16 cooperates with the mounting groove 14. Ventilation holes 17 are provided on both the moving plate 4 and the top rod 5. The ventilation holes 17 on the moving plate 4 and the ventilation holes 17 on the top rod 5 are connected. An extension tube 18 is fixedly provided on the cover plate 3. A shielding block 19 is provided at the top of the extension tube 18. The extension tube 18 is hollow inside. The extension tube 18 cooperates with the top rod 5. A connecting block 20 is provided between the shielding block 19 and the inner wall of the extension tube 18. Multiple connecting blocks 20 are provided. A cutting blade 21 is provided at the top of the top rod 5. The cutting blade 21 is fixedly provided on the top rod 5. The top rod 5 cooperates with the connecting block 20. Specifically, when the capacitor is damaged, the internal components generate a large amount of gas. The gas enters the space between the second housing 2 and the first housing 1 through the exhaust port 8 in the first housing 1. The gas pressure inside the second housing 2 increases, which pushes the moving plate 4 to rise inside the second housing 2. This causes the push rod 5 on the moving plate 4 to enter the extension tube 18 on the cover plate 3. The push rod 5 then rises along the extension tube 18 and cuts the connecting block 20 between the baffle plate and the extension tube 18 through the cutting blade 21 at the top of the push rod 5. As a result, the gas is discharged into the external environment through the vent holes 17 on the moving plate 4 and the push rod 5.

[0024] Please refer to Figure 1-5 As one embodiment for connecting the first housing 1 and the second housing 2: an extension plate 9 is fixedly provided at the lower end of the first housing 1, and the extension plate 9 cooperates with the second housing 2. A limiting groove 10 is provided on the extension plate 9. A limiting block 11 is fixedly provided at the lower end of the second housing 2, and the limiting block 11 cooperates with the limiting groove 10. A connecting hole 12 is provided on the extension plate 9. A connecting post 13 is fixedly provided at the lower end of the second housing 2. Multiple connecting posts 13 and multiple connecting holes 12 are provided. The top end of the connecting post 13 is provided with a thread. Two intermediate blocks 7 are provided between the two mounting blocks, and the two intermediate blocks 7 are fixedly connected. Multiple missing holes 22 are provided on the intermediate blocks 7. Specifically, when the entire capacitor casing is subjected to external impact or pressure, the second casing 2 forms the first line of protection for the internal components of the capacitor. The impact force deforms the second casing 2, thereby reducing the impact force on the first casing 1. When the impact force is large, the second casing 2 squeezes the middle block 7, and the notch 22 opened on the middle block 7 guides the middle block 7 to deform, thereby dissipating part of the impact through the deformation of the middle block 7. The first casing 1 forms the final line of protection for the internal components of the capacitor.

[0025] In summary, when using it as a whole: When the entire capacitor casing is subjected to external impact or pressure, the second casing 2 forms the first line of protection for the internal components of the capacitor. The impact force deforms the second casing 2, thereby reducing the impact force on the first casing 1. When the impact force is large, the second casing 2 squeezes the middle block 7, and the notch 22 opened on the middle block 7 guides the deformation of the middle block 7, thereby dissipating part of the impact through the deformation of the middle block 7. The first casing 1 forms the final line of protection for the internal components of the capacitor.

[0026] When the capacitor is damaged, the internal components generate a large amount of gas. The gas enters the space between the second housing 2 and the first housing 1 through the exhaust port 8 in the first housing 1. The gas pressure inside the second housing 2 increases, which pushes the moving plate 4 to rise inside the second housing 2. This causes the push rod 5 on the moving plate 4 to enter the extension tube 18 on the cover plate 3. The push rod 5 then rises along the extension tube 18 and cuts the connecting block 20 between the baffle plate and the extension tube 18 through the cutting blade 21 at the top of the push rod 5. As a result, the gas is discharged into the external environment through the vent holes 17 on the moving plate 4 and the push rod 5.

[0027] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof aluminum shell for a capacitor, comprising a first shell (1) and a second shell (2), characterized in that: The first housing (1) is disposed inside the second housing (2), and a cover plate (3) is disposed at the upper end of the second housing (2). The cover plate (3) is bolted to the second housing (2), and an exhaust structure is disposed inside the second housing (2) between the first housing (1) and the cover plate (3). The exhaust structure includes a movable plate (4) and a top rod (5). The movable plate (4) is movably disposed inside the second housing (2). The top rod (5) is fixedly disposed on the movable plate (4). A support structure is provided between the first housing (1) and the second housing (2). The support structure includes a first mounting block (6) and an intermediate block (7). The first mounting block (6) is fixedly disposed at both ends of the intermediate block (7). The first housing (1) is provided with exhaust holes (8). Multiple exhaust holes (8) are provided.

2. The explosion-proof aluminum shell for a capacitor according to claim 1, characterized in that: An extension plate (9) is fixedly provided at the lower end of the first housing (1). The extension plate (9) and the second housing (2) cooperate with each other. A limiting groove (10) is provided on the extension plate (9). A limiting block (11) is fixedly provided at the lower end of the second housing (2). The limiting block (11) and the limiting groove (10) cooperate with each other.

3. The explosion-proof aluminum shell for a capacitor according to claim 2, characterized in that: The extension plate (9) is provided with a connecting hole (12), and a connecting post (13) is fixedly provided at the lower end of the second housing (2). Multiple connecting posts (13) and connecting holes (12) are provided. The connecting posts (13) and connecting holes (12) cooperate with each other. The top end of the connecting post (13) is provided with a thread.

4. The explosion-proof aluminum shell for a capacitor according to claim 1, characterized in that: The outer wall of the first housing (1) and the inner wall of the second housing (2) are provided with mounting grooves (14). The first mounting block (6) and the mounting groove (14) cooperate with each other. The lower end of the cover plate (3) is fixedly provided with a mating plate (15). The mating plate (15) is fixedly provided with a second mounting block (16). The second mounting block (16) and the mounting groove (14) cooperate with each other.

5. The explosion-proof aluminum shell for a capacitor according to claim 1, characterized in that: Ventilation holes (17) are provided on both the movable plate (4) and the top rod (5). The ventilation holes (17) on the movable plate (4) are connected to the ventilation holes (17) on the top rod (5). An extension tube (18) is fixedly provided on the cover plate (3). A blocking block (19) is provided on the top of the extension tube (18).

6. The explosion-proof aluminum shell for a capacitor according to claim 5, characterized in that: The extension tube (18) is hollow inside. The extension tube (18) and the top rod (5) cooperate with each other. A connecting block (20) is provided between the shielding block (19) and the inner wall of the extension tube (18). Multiple connecting blocks (20) are provided.

7. The explosion-proof aluminum shell for a capacitor according to claim 6, characterized in that: The top of the top rod (5) is provided with a cutting blade (21), which is fixedly mounted on the top rod (5). The top rod (5) and the connecting block (20) cooperate with each other.

8. The explosion-proof aluminum shell for a capacitor according to claim 1, characterized in that: There are two intermediate blocks (7) between the two mounting blocks, and the two intermediate blocks (7) are fixedly connected. The intermediate blocks (7) are provided with notches (22), and there are multiple notches (22).

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