Aluminum electrolytic capacitor and production process thereof

Abstract

The present invention belongs to the technical field of capacitors, and provides an aluminum electrolytic capacitor and a production process thereof. The capacitor comprises a bottom plate, on which two groups of protective tubes are fixedly mounted, and a plurality of groups of arc-shaped first protective plates are arranged on the bottom plate, and the plurality of groups of first protective plates are distributed in a circular array around the axis of the bottom plate, and first mounting rings are fixedly mounted on both ends of the plurality of groups of first protective plates, so as to solve the technical problem that the capacitor is shielded and covered when protecting the capacitor in the prior art, thereby resulting in poor heat dissipation effect of the capacitor. The present invention protects the capacitor body by the second protective plate and the first protective plate, and at the same time, when in use, the surface of the capacitor body located between the intervals of the first protective plates can be in contact with the air for natural heat dissipation. The present invention can be widely used in the protection and heat dissipation use scenarios of electrical devices.

Description

Technical Field

[0001] The invention belongs to the technical field of capacitors, and in particular relates to an aluminum electrolytic capacitor and a production process thereof. Background Art

[0002] Electrolytic capacitor is a type of capacitor. The metal foil is the positive electrode, the metal oxide film close to the positive electrode is the dielectric, and the cathode is composed of conductive materials, electrolytes and other materials. Among them, aluminum electrolytic capacitors are capacitors made of aluminum as the main material and are widely used in various power supply filters and low-frequency circuits.

[0003] In order to facilitate use, the existing aluminum electrolytic capacitors generally have pins for connection that are fixed and exposed to the outside. When not in use, the pins cannot be retracted into the shell and are easily damaged. In response to the above technical problems, the applicant has retrieved some prior arts, such as the Chinese patent with patent announcement number CN116130247B. When in use, the capacitor is installed in a shell, and the capacitor is pushed to move in the shell by a sleeve so that the pins can extend into or enter the shell. However, when in use, the shell fully surrounds and covers the capacitor, and the sleeve covers and wraps the shell on the outside. However, a large amount of heat is generated when the capacitor is in use. Due to the coverage of the shell and the sleeve, the heat generated by the capacitor is quickly dissipated to the outside, which leads to a high temperature of the capacitor. Long-term overheating of the capacitor will accelerate the volatilization of the electrolyte and shorten the life of the capacitor. Summary of the invention

[0004] The object of the present invention is to provide an aluminum electrolytic capacitor and a production process thereof, aiming to solve the technical problem in the prior art that the capacitor is shielded and covered when protecting the capacitor, thereby resulting in poor heat dissipation effect of the capacitor.

[0005] The present invention is implemented as follows: an aluminum electrolytic capacitor comprises a bottom plate, two groups of protective tubes are fixedly mounted on the bottom plate, a plurality of groups of arc-shaped first protective plates are arranged on the bottom plate, the plurality of groups of first protective plates are distributed in a circular array around the axis of the bottom plate, first mounting rings are fixedly mounted on both ends of the plurality of groups of first protective plates, one group of the first mounting rings is fixedly connected to the bottom plate, a support plate located inside the first protective plate is arranged on the bottom plate, a capacitor body is arranged on the support plate, and pins of the capacitor body pass through the support plate and extend into the protective tube, and a pressure plate is arranged inside the first mounting ring;

[0006] The two groups of the first mounting rings are both threadedly connected with coaxially arranged second mounting rings, and the two groups of the second mounting rings jointly fix multiple groups of arc-shaped second protective plates. The number of the second protective plates is the same as the number of the first protective plates. The second protective plates are in sliding contact with the first protective plates. When the first protective plates and the second protective plates are spaced apart, the second protective plates cover the intervals between the first protective plates.

[0007] Further technical solution: multiple groups of first telescopic rods are fixedly installed on the base plate, the first telescopic rods are parallel to the axis of the base plate and are fixedly connected to the support plate, multiple groups of first elastic parts are fixedly installed on the base plate, one end of the first elastic part away from the base plate is fixedly connected to the support plate, a fixing screw is threadedly connected to the base plate, and the fixing screw is threadedly connected to the support plate.

[0008] Further technical solution: the first mounting ring is internally threadedly connected to a support plate, the support plate is threadedly connected to an adjusting screw, the adjusting screw is rotatably connected to the pressure plate, and the outer side surface of the pressure plate is in sliding contact with the inner wall of the first protective plate.

[0009] Further technical solution: the inner wall of the first protective plate is in sliding contact with the outer surface of the capacitor body and the capacitor body is located between the two groups of first mounting rings.

[0010] Further technical solution: a through groove is provided on the first protective plate, and a plurality of groups of spaced-apart airbags are fixedly installed in the through groove, the airbags are located on the inner wall of the through groove close to the capacitor body, an air outlet pipe is connected to the airbag, the air outlet pipe is fixed on the first protective plate and the air outlet pipe points to the side of the first protective plate, a rotating shaft is rotatably installed on the side wall of the first protective plate, one end of the rotating shaft extends into the air outlet pipe and the other end extends out of the through groove, a first fan blade and a second fan blade are fixedly installed at both ends of the rotating shaft respectively, the first fan blade and the second fan blade are installed in opposite directions, and when the air in the airbag is blown out from the air outlet pipe, the rotating shaft is driven to rotate through the first fan blade.

[0011] Further technical solution: the through groove passes through the first mounting ring away from the bottom plate, and an air inlet groove is provided at one end of the through groove close to the bottom plate.

[0012] Further technical solution: a baffle is fixedly installed in the air outlet pipe, a through hole is opened in the middle of the baffle, a bracket is rotatably installed on the baffle, a magnet is fixedly installed at the end of the bracket, and the through hole in the middle of the baffle is closed when the magnet is adsorbed with the baffle.

[0013] Further technical solution: a second telescopic rod pointing to the bracket is fixedly installed on the baffle, a cross bar is fixedly installed on the end of the second telescopic rod, a second elastic member is fixedly installed on the baffle, the second elastic member is fixedly connected to the cross bar, and when the magnet is adsorbed on the baffle, the bracket compresses the second elastic member through the cross bar.

[0014] The present invention also provides a production process for an aluminum electrolytic capacitor, which is applied to the aluminum electrolytic capacitor described above and comprises the following steps:

[0015] Step S1: corroding, oxidizing, drying and heat treating the aluminum foil in sequence to obtain an oxide film and then cutting it;

[0016] Step S2: Winding the electrolytic paper, anode foil, electrolytic paper and cathode foil into a core package structure in an automatic winding machine according to the layered distribution of the electrolytic paper, anode foil and cathode foil;

[0017] Step S3: After the core package is dried, it is placed in an impregnation cylinder, the impregnation cylinder is vacuumed, and then the electrolyte is applied to the impregnation cylinder by pressurization for impregnation;

[0018] Step S4: Complete the sealing and waisting operations on the capacitor body, then install the capacitor body into the first protective plate and make its pins enter the protective tube, fix the capacitor body with a pressing plate, and shield and protect the capacitor body with the first protective plate and the second protective plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. When the capacitor body is not installed and used, the second mounting ring is rotated so that the second protective plate and the first protective plate are spaced apart, and then the second protective plate is used to completely cover and seal the interval between the first protective plates, and at the same time, the pins of the capacitor body are located in the protective tube. At this time, a complete protective structure can be formed on the outside of the capacitor body, thereby improving the safety of the capacitor body during storage and transportation and reducing the probability of damage to the capacitor body. When the capacitor body is installed and used, the second mounting ring is rotated so that the second protective plate and the first protective plate are overlapped and distributed. At this time, the surface of the capacitor body located between the first protective plate intervals is in contact with the air for natural heat dissipation, thereby reducing the shielding of the surface of the capacitor body. At the same time, the capacitor body is heat-conducted through multiple groups of first protective plates to accelerate the loss of heat on the capacitor body, thereby improving the heat dissipation capacity of the capacitor body, thereby realizing all-round protection of the capacitor body when it is not installed and used. At the same time, during use, the capacitor body can be protected by the first protective plate while reducing the shielding of the surface of the capacitor body, thereby avoiding the influence of the protective components on the heat dissipation of the capacitor body, avoiding the use of the capacitor body at high temperatures, and ensuring the safety of the capacitor body.

[0021] 2. When the heat generated by the capacitor body is conducted to the first protective plate, the temperature inside the airbag rises. Since the airbag is in a closed state, the airbag will expand at this time. When the air pressure in the airbag reaches the set pressure, it will be quickly ejected outward from the air outlet pipe. When the air flows in the air outlet pipe, it drives the shaft to rotate through the first fan blade, and when the shaft rotates, it drives the second fan blade to rotate. When the second fan blade rotates, it blows the air flow on the surface of the capacitor body, thereby accelerating the flow speed of the air on the surface of the capacitor body, thereby increasing the heat dissipation speed of the capacitor body, further increasing the heat dissipation capacity of the capacitor body, and can use the heat generated by the capacitor body as a power source for active cooling, ensuring that the capacitor body is operated at a suitable temperature, avoiding long-term overheating of the capacitor body to accelerate the volatilization of the electrolyte, and shortening the life of the capacitor body.

[0022] 3. The first protective plate absorbs heat while heating the air in the slot. The air in the slot flows upward after being heated, and the air with a lower outside temperature enters the slot through the air inlet slot, thereby increasing the cooling rate of the first protective plate through the flowing air. The design of the slot increases the contact area between the first protective plate and the air, further increasing the cooling rate of the first protective plate, thereby increasing the temperature difference between the first protective plate and the capacitor body, and further improving the cooling effect on the capacitor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the bottom plate of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the second protective plate in the present invention.

[0026] Figure 4 It is a schematic structural diagram of the first protective plate in the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the airbag in the present invention.

[0028] Figure 6 It is a schematic diagram of the structure inside the air intake pipe in the present invention.

[0029] Figure 7 for Figure 6 A magnified schematic diagram of the A1 region in the middle.

[0030] In the accompanying drawings: 1. bottom plate; 2. protective tube; 3. first telescopic rod; 4. support plate; 5. first elastic member; 6. capacitor body; 7. fixing screw; 8. first protective plate; 9. first mounting ring; 10. second protective plate; 11. second mounting ring; 12. through groove; 13. support plate; 14. adjusting screw; 15. pressure plate; 16. air bag; 17. air outlet pipe; 18. baffle; 19. bracket; 20. magnet; 21. second telescopic rod; 22. second elastic member; 23. cross bar; 24. rotating shaft; 25. first fan blade; 26. second fan blade; 27. air inlet slot. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of 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 intended to limit the present invention.

[0032] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0033] like Figure 1-Figure 4 As shown, an aluminum electrolytic capacitor provided by the present invention comprises a bottom plate 1, two groups of protective tubes 2 are fixedly mounted on the bottom plate 1, a plurality of groups of arc-shaped first protective plates 8 are arranged on the bottom plate 1, the plurality of groups of first protective plates 8 are distributed in a circumferential array around the axis of the bottom plate 1, first mounting rings 9 are fixedly mounted on both ends of the plurality of groups of first protective plates 8, one group of the first mounting rings 9 is fixedly connected to the bottom plate 1, a support plate 4 located inside the first protective plate 8 is arranged on the bottom plate 1, a capacitor body 6 is arranged on the support plate 4, and the pins of the capacitor body 6 pass through the support plate 4 and extend into the protective tube 2, the inner wall of the first protective plate 8 is in sliding contact with the outer surface of the capacitor body 6, and the capacitor body 6 is located between the two groups of first mounting rings 9, and a pressing plate 15 is arranged inside the first mounting ring 9;

[0034] The two groups of first mounting rings 9 are both threadedly connected with coaxially arranged second mounting rings 11, and the two groups of second mounting rings 11 jointly fix and install multiple groups of arc-shaped second protective plates 10. The number of second protective plates 10 is the same as the number of first protective plates 8. The second protective plates 10 are in sliding contact with the first protective plates 8. When the first protective plates 8 and the second protective plates 10 are spaced apart, the second protective plates 10 cover the intervals between the first protective plates 8.

[0035] In actual application of this embodiment, the pins of the capacitor body 6 are inserted into the first mounting ring 9 with the pins facing the bottom plate 1, so that the pins of the capacitor body 6 pass through the support plate 4 and enter the protective tube 2 until the capacitor body 6 contacts the support plate 4, and then the capacitor body 6 is pressed on the support plate 4 by the pressing plate 15 to fix it, and the position of the capacitor body 6 is adjusted by the pressing plate 15, so that the pins of the capacitor body 6 can extend out of the protective tube 2 when the capacitor body 6 is in use;

[0036] Then, the second mounting ring 11 is installed on the first mounting ring 9 by threading, so that the two groups of second mounting rings 11 are respectively threadedly connected with the two groups of first mounting rings 9, and the second mounting ring 11 can be rotated to drive the second protective plate 10 to rotate, so as to adjust the position of the second protective plate 10. When the capacitor body 6 is not installed and used, the second mounting ring 11 is rotated so that the second protective plate 10 and the first protective plate 8 are spaced apart, and then the second protective plate 10 completely covers and closes the interval between the first protective plates 8, and at the same time, the pins of the capacitor body 6 are located in the protective tube 2. At this time, a complete protective structure can be formed on the outside of the capacitor body 6, thereby improving the safety of the capacitor body 6 during storage and transportation and reducing the probability of damage to the capacitor body 6;

[0037] When the capacitor body 6 is installed and used, the position of the capacitor body 6 is adjusted by the pressing plate 15 so that the pins of the capacitor body 6 can extend from the protective tube 2. At the same time, the second mounting ring 11 is rotated so that the second protective plate 10 overlaps with the first protective plate 8. At this time, the surface of the capacitor body 6 located between the first protective plates 8 is in contact with the air for natural heat dissipation, thereby reducing the obstruction of the surface of the capacitor body 6. At the same time, the capacitor body 6 is heat-conducted by multiple groups of first protective plates 8 to accelerate the dissipation of heat on the capacitor body 6, thereby improving the heat dissipation capacity of the capacitor body 6, and realizing all-round protection of the capacitor body 6 when it is not installed and used. At the same time, during use, the capacitor body 6 can be protected by the first protective plate 8 while reducing the obstruction of the surface of the capacitor body 6, thereby avoiding the protective components from affecting the heat dissipation of the capacitor body 6, avoiding the capacitor body 6 from being used at high temperatures, and ensuring the safety of the capacitor body 6.

[0038] like Figure 1 , Figure 2 As shown, an aluminum electrolytic capacitor provided by the present invention is provided, wherein a plurality of groups of first telescopic rods 3 are fixedly installed on a bottom plate 1, the first telescopic rods 3 are parallel to the axis of the bottom plate 1 and the first telescopic rods 3 are fixedly connected to a support plate 4, a plurality of groups of first elastic members 5 are fixedly installed on the bottom plate 1, one end of the first elastic member 5 away from the bottom plate 1 is fixedly connected to the support plate 4, a fixing screw 7 is threadedly connected to the bottom plate 1, and the fixing screw 7 is threadedly connected to the support plate 4.

[0039] Specifically, the first mounting ring 9 is internally threadedly connected with a support plate 13 , the support plate 13 is threadedly connected with an adjusting screw 14 , the adjusting screw 14 is rotatably connected to a pressing plate 15 , and the outer side surface of the pressing plate 15 is in sliding contact with the inner wall of the first protective plate 8 .

[0040] In actual application of this embodiment, the capacitor body 6 is placed on the support plate 4 and the pins of the capacitor body 6 pass through the support plate 4 and extend into the protective tube 2, then the pressing plate 15 is placed in the first mounting ring 9 and the support plate 13 is threadedly installed in the first mounting ring 9, then the adjusting screw 14 is rotated to drive the pressing plate 15 to move so that the pressing plate 15 contacts the capacitor body 6, when the capacitor body 6 is not installed and used, the position of the pressing plate 15 is adjusted so that the pins of the capacitor body 6 are located in the protective tube 2 for protection, so as to avoid damage to the pins during transportation and storage, etc., when it needs to be installed and used, the adjusting screw 14 is continued to be rotated to drive the pressing plate 15 to move and push the capacitor body 6 to move, at this time, the pins of the capacitor body 6 can be extended from the protective tube 2, which is convenient for connecting the capacitor body 6, and the first elastic member 5 is used to apply a supporting force to the support plate 4, so as to ensure that the pressing plate 15 and the support plate 4 can clamp and fix the capacitor body 6, and when the capacitor body 6 is used or stored, the fixing screw 7 is connected to the support plate 4, so as to achieve the fixation of the support plate 4 and ensure the stability of the capacitor body 6.

[0041] In an example of the present invention, the first elastic member 5 is a first spring, and can also be other elastic components such as an elastic ball. The first spring applies thrust to the support plate 4, so that the support plate 4 can stably support the capacitor body 6.

[0042] like Figure 4-Figure 7 As shown, an aluminum electrolytic capacitor provided by the present invention is provided with a through slot 12, and a plurality of groups of spaced air bags 16 are fixedly installed in the through slot 12. The air bags 16 are located on the inner wall of the through slot 12 close to the capacitor body 6, and an air outlet pipe 17 is connected to the air bag 16. The air outlet pipe 17 is fixed on the first protective plate 8 and points to the side of the first protective plate 8. A rotating shaft 24 is rotatably installed on the side wall of the first protective plate 8, and one end of the rotating shaft 24 extends into the air outlet pipe 17 and the other end extends out of the through slot 12. A first fan blade 25 and a second fan blade 26 are fixedly installed at both ends of the rotating shaft 24, respectively. The first fan blade 25 and the second fan blade 26 are installed in opposite directions. When the air in the air bag 16 is blown out from the air outlet pipe 17, the rotating shaft 24 is driven to rotate through the first fan blade 25.

[0043] Specifically, the through slot 12 passes through the first mounting ring 9 away from the bottom plate 1 , and an air inlet slot 27 is formed at one end of the through slot 12 close to the bottom plate 1 . The width of the air inlet slot 27 is wider than that of the second protective plate 10 .

[0044] Specifically, a baffle 18 is fixedly installed in the air outlet pipe 17, a through hole is opened in the middle of the baffle 18, a bracket 19 is rotatably installed on the baffle 18, and a magnet 20 is fixedly installed at the end of the bracket 19. When the magnet 20 is adsorbed with the baffle 18, the through hole in the middle of the baffle 18 is closed.

[0045] Specifically, a second telescopic rod 21 pointing to the bracket 19 is fixedly installed on the baffle 18, a cross bar 23 is fixedly installed on the end of the second telescopic rod 21, a second elastic member 22 is fixedly installed on the baffle 18, and the second elastic member 22 is fixedly connected to the cross bar 23. When the magnet 20 is adsorbed on the baffle 18, the bracket 19 compresses the second elastic member 22 through the cross bar 23.

[0046] In actual application of this embodiment, when the capacitor body 6 is in use, it will generate high temperature. The capacitor body 6 is heat-conducted by multiple sets of first protective plates 8 to improve the heat dissipation effect of the capacitor body 6. At the same time, the surface of the capacitor body 6 located at the interval of the first protective plates 8 can be in contact with the air for direct heat dissipation, so that the heat dissipation of the capacitor body 6 can be directly accelerated when the external air flows;

[0047] The heat generated by the capacitor body 6 is conducted to the first protective plate 8. At this time, the temperature of the first protective plate 8 rises, thereby heating the airbag 16, so that the temperature inside the airbag 16 rises. Since the airbag 16 is in a closed state, the airbag 16 will expand. When the air pressure in the airbag 16 reaches the set air pressure, it will overcome the magnetic force between the magnet 20 and the baffle 18 and push the magnet 20 away from the baffle 18. At this time, the air in the airbag 16 will pass through the baffle 18 and quickly eject outward from the outlet pipe 17. When the air flows in the outlet pipe 17, it is carried by the first fan blade 25. The rotating shaft 24 rotates, and when the rotating shaft 24 rotates, the second fan blades 26 are driven to rotate. When the second fan blades 26 rotate, the air flow on the surface of the capacitor body 6 is blown, thereby accelerating the flow speed of the air on the surface of the capacitor body 6, thereby improving the heat dissipation speed of the capacitor body 6, further increasing the heat dissipation capacity of the capacitor body 6, and being able to use the heat generated by the capacitor body 6 as a power source for active cooling, ensuring that the capacitor body 6 is operated at a suitable temperature, avoiding long-term overheating of the capacitor body 6 to accelerate the volatilization of the electrolyte, and shortening the life of the capacitor body 6;

[0048] The first protective plate 8 absorbs heat and heats the air in the through slot 12. The air in the through slot 12 is heated and flows upward. The air with a lower outside temperature enters the through slot 12 through the air inlet slot 27, thereby increasing the cooling speed of the first protective plate 8 through the flowing air. The contact area between the first protective plate 8 and the air is increased by the design of the through slot 12, further increasing the cooling speed of the first protective plate 8, thereby increasing the temperature difference between the first protective plate 8 and the capacitor body 6, and further improving the cooling effect on the capacitor body 6. Since the width of the air inlet slot 27 is wider than that of the second protective plate 10, the second protective plate 10 will not completely close the air inlet slot 27.

[0049] When the magnet 20 is separated from the adsorption of the baffle 18, the magnet 20 will drive the bracket 19 to rotate in the direction away from the baffle 18 under the push of the air. At this time, the second elastic member 22 recovers its original length. When the magnet 20 falls again, the bracket 19 contacts the cross bar 23 and compresses the second elastic member 22 again. The falling time of the magnet 20 is extended by the second elastic member 22, thereby increasing the time that the airbag 16 is connected to the through groove 12. As the air in the airbag 16 is ejected, the internal pressure decreases. When the internal pressure of the airbag 16 is the same as the air pressure in the through groove 12, the gas in the airbag 16 no longer ejects. At this time, the air in the airbag 16 and the through groove 12 circulates normally. After that, the magnet 20 is again adsorbed and contacted with the baffle 18 to close the airbag 16. Repeat the above steps and the air in the airbag 16 can be intermittently ejected to push the second fan blade 26 to rotate, further increasing the heat dissipation capacity of the capacitor body 6.

[0050] In one embodiment of the present invention, the second elastic member 22 is a second spring, and can also be other elastic components such as an elastic ball. The second spring applies resistance to the bracket 19, thereby delaying the time for the magnet 20 to be in adsorption contact with the baffle 18.

[0051] like Figure 1-Figure 6 As shown, the present invention provides a production process for an aluminum electrolytic capacitor, which is applied to the aluminum electrolytic capacitor described above, and includes the following steps:

[0052] Step S1: corroding, oxidizing, drying and heat treating the aluminum foil in sequence to obtain an oxide film and then cutting it;

[0053] Step S2: Winding the electrolytic paper, anode foil, electrolytic paper and cathode foil into a core package structure in an automatic winding machine according to the layered distribution of the electrolytic paper, anode foil and cathode foil;

[0054] Step S3: After the core package is dried, it is placed in an impregnation cylinder, the impregnation cylinder is vacuumed, and then the electrolyte is applied to the impregnation cylinder by pressurization for impregnation;

[0055] Step S4: Complete the sealing and waisting operations on the capacitor body 6, then install the capacitor body 6 into the first protective plate 8 and make its pins enter the protective tube 2, fix the capacitor body 6 by the pressing plate 15, and shield and protect the capacitor body 6 by the first protective plate 8 and the second protective plate 10.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An aluminum electrolytic capacitor, comprising a bottom plate (1), characterized in that: Two groups of protective tubes (2) are fixedly mounted on the bottom plate (1), a plurality of groups of arc-shaped first protective plates (8) are arranged on the bottom plate (1), the plurality of groups of first protective plates (8) are distributed in a circular array around the axis of the bottom plate (1), first mounting rings (9) are fixedly mounted on both ends of the plurality of groups of first protective plates (8), one group of the first mounting rings (9) is fixedly connected to the bottom plate (1), a support plate (4) located inside the first protective plate (8) is arranged on the bottom plate (1), a capacitor body (6) is arranged on the support plate (4), and pins of the capacitor body (6) pass through the support plate (4) and extend into the protective tube (2), and a pressure plate (15) is arranged inside the first mounting ring (9); The two groups of the first mounting rings (9) are both threadedly connected with coaxially arranged second mounting rings (11), and the two groups of the second mounting rings (11) are jointly fixedly mounted with a plurality of groups of arc-shaped second protective plates (10), the number of the second protective plates (10) is the same as the number of the first protective plates (8), the second protective plates (10) are in sliding contact with the first protective plates (8), and when the first protective plates (8) and the second protective plates (10) are spaced apart, the second protective plates (10) cover the space between the first protective plates (8); A plurality of first telescopic rods (3) are fixedly mounted on the base plate (1), the first telescopic rods (3) are parallel to the axis of the base plate (1) and the first telescopic rods (3) are fixedly connected to the support plate (4), a plurality of first elastic members (5) are fixedly mounted on the base plate (1), one end of the first elastic member (5) away from the base plate (1) is fixedly connected to the support plate (4), a fixing screw (7) is threadedly connected to the base plate (1), and the fixing screw (7) is threadedly connected to the support plate (4).

2. An aluminum electrolytic capacitor according to claim 1, characterized in that: The first mounting ring (9) is internally threadedly connected to a support plate (13), the support plate (13) is threadedly connected to an adjusting screw (14), the adjusting screw (14) is rotatably connected to a pressure plate (15), and the outer side surface of the pressure plate (15) is in sliding contact with the inner wall of the first protective plate (8).

3. The aluminum electrolytic capacitor according to claim 1, characterized in that: The inner wall of the first protection plate (8) is in sliding contact with the outer surface of the capacitor body (6), and the capacitor body (6) is located between the two sets of first mounting rings (9).

4. The aluminum electrolytic capacitor according to claim 1, characterized in that: The first protective plate (8) is provided with a through slot (12), and a plurality of groups of air bags (16) are fixedly installed in the through slot (12) and are spaced apart from each other. The air bags (16) are located on the inner wall of the through slot (12) close to the capacitor body (6), and the air bag (16) is connected to an air outlet pipe (17), which is fixed on the first protective plate (8) and points to the side of the first protective plate (8). A rotating shaft (24) is rotatably installed on the side wall of the first protective plate (8), and one end of the rotating shaft (24) extends into the air outlet pipe (17) and the other end extends out of the through slot (12). A first fan blade (25) and a second fan blade (26) are fixedly installed at both ends of the rotating shaft (24), respectively. The first fan blade (25) and the second fan blade (26) are installed in opposite directions. When air in the air bag (16) is blown out from the air outlet pipe (17), the rotating shaft (24) is driven to rotate by the first fan blade (25).

5. The aluminum electrolytic capacitor according to claim 4, characterized in that: The through slot (12) passes through a first mounting ring (9) away from the bottom plate (1), and an air inlet slot (27) is provided at one end of the through slot (12) close to the bottom plate (1).

6. The aluminum electrolytic capacitor according to claim 4, characterized in that: A baffle (18) is fixedly mounted in the air outlet pipe (17), a through hole is opened in the middle of the baffle (18), a bracket (19) is rotatably mounted on the baffle (18), a magnet (20) is fixedly mounted on the end of the bracket (19), and the magnet (20) closes the through hole in the middle of the baffle (18) when adsorbed to the baffle (18).

7. The aluminum electrolytic capacitor according to claim 6, characterized in that: A second telescopic rod (21) pointing toward the bracket (19) is fixedly mounted on the baffle (18), a cross bar (23) is fixedly mounted on the end of the second telescopic rod (21), a second elastic member (22) is fixedly mounted on the baffle (18), the second elastic member (22) is fixedly connected to the cross bar (23), and when the magnet (20) is adsorbed onto the baffle (18), the bracket (19) compresses the second elastic member (22) via the cross bar (23).

8. A production process for aluminum electrolytic capacitors, characterized in that: An aluminum electrolytic capacitor as claimed in any one of claims 1 to 7, comprising the following steps: Step S1: corroding, oxidizing, drying and heat treating the aluminum foil in sequence to obtain an oxide film and then cutting it; Step S2: Winding the electrolytic paper, anode foil, electrolytic paper and cathode foil into a core package structure in an automatic winding machine according to the layered distribution of the electrolytic paper, anode foil and cathode foil; Step S3: After the core package is dried, it is placed in an impregnation cylinder, the impregnation cylinder is vacuumed, and then the electrolyte is applied to the impregnation cylinder by pressurization for impregnation; Step S4: After completing the sealing and waisting operations on the capacitor body (6), the capacitor body (6) is installed in the first protective plate (8) and its pins are inserted into the protective tube (2), the capacitor body (6) is fixed by the pressing plate (15), and the capacitor body (6) is shielded and protected by the first protective plate (8) and the second protective plate (10).

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