Electrolytic capacitor and preparation method thereof

Abstract

The invention discloses an electrolytic capacitor and a preparation method thereof. The electrolytic capacitor comprises a shell, an adhesive cover plate, a core package, a welding pin, a movable ring, a tray, an anti-explosion groove, a movable plate, a pressing plate, a wedge-shaped plate and a rotating plate. The pressing plate is pressed against the mounting assembly of the core package through the wedge-shaped plate and the rotating plate; the rotating plate is separated from the wedge-shaped plate and the pressing plate, so that the tray is separated from the matching component of the shell while the pressing effect on the core package is ensured; the movable plate and the wedge-shaped plate move downwards by pressing the movable ring and pressing, on one hand, the wedge-shaped plate moves downwards to enable the pressing plate to move along the movable groove and press against the outer surface of the core package, and on the other hand, the movable plate moves downwards to drive the rotating plate to move downwards to be in contact with the fixed plate, so that the rotating plate moving downwards rotates to press against the pressing plate, and the core package is fixed. And the wedge-shaped plate and the rotating plate act together to act on the top and bottom parts of the pressing plate, so that the pressing plate is stably pressed against the outer surface of the core package, and the core package is fixed.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic capacitor structures, and in particular to an electrolytic capacitor and a preparation method thereof. Background Art

[0002] Electrolytic capacitors store charge by forming electrodes in an electrolyte, a solution that conducts electricity and contains ions. When the electrolyte is placed between metal plates (electrodes), by applying voltage in it, the ions will move and form an adhesion layer on the electrodes, thereby storing charge.

[0003] The existing electrolytic capacitor is prepared by sealing the core package with a shell and a viscose cover. When prepared in this way, the core package and the shell are inconvenient to install, and when the core package needs to be replaced, the operation is inconvenient.

[0004] To this end, we propose an electrolytic capacitor and a preparation method thereof. Summary of the invention

[0005] The object of the present invention is to provide an electrolytic capacitor and a method for preparing the same, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides an electrolytic capacitor, comprising a shell and an adhesive cover plate covered on the shell, a core package is arranged in the shell, and the core package is connected to a welding pin passing through the adhesive cover plate through a lead line; and further comprising a movable ring sandwiched between the shell and the adhesive cover plate, a tray is slidably matched at the bottom of the shell, an explosion-proof groove is provided on the tray, a movable plate is connected to the tray and press-matched with the movable ring, a pressing plate is sandwiched between the side of the movable plate and the core package, a wedge plate is provided below the movable ring and snap-fitted with the top end of the pressing plate, and a rotating plate is rotatably connected to the movable plate and press-matched with the bottom end of the pressing plate; an installation component, when the movable plate is lowered, the installation component presses the pressing plate against the core package through the wedge plate and the rotating plate; a matching component, when the core package is replaced, the matching component separates the rotating plate from the pressing plate, and ensures that the pressing effect on the core package is achieved, while the tray is separated from the shell first, and the replacement is performed step by step.

[0007] Preferably, the mounting assembly includes a fixed plate connected and fixed to the outer shell and cooperating with the rotating plate, a movable groove movably cooperating with the pressure plate is provided on the inner side of the outer shell, a rotating groove rotatably connected to the rotating plate is provided on the movable plate, and a plug-in groove rotatably cooperating with the tray is provided on the bottom of the outer shell.

[0008] Preferably, the mating component includes two symmetrically and obliquely distributed plug rods, the plug rods are elastic rods, the tops of the two plug rods are connected and fixed to the movable ring, and the two plug rods are distributed and inserted into the movable plate and the top of the wedge plate.

[0009] Preferably, an elastic member connected to the rotating groove is provided above the rotating plate, which helps to ensure that the rotating plate acts against the pressure plate.

[0010] Preferably, the explosion-proof grooves are distributed in a circle and are provided in three pieces, and a protective film is adhered to the bottom of the explosion-proof grooves to prevent moisture from entering the protective film.

[0011] Preferably, the core package comprises separator paper, cathode foil and anode foil, and the ends of the separator paper, cathode foil and anode foil are adhered by adhesive tape, and the position of one of the pressing plates corresponds to the position where the adhesive tape is adhered.

[0012] Preferably, the end of the rotating plate is inclined, and a convex rod which is pressed and matched with the fixed plate is fixedly connected to the side surface of the rotating plate.

[0013] A method for preparing an electrolytic capacitor, using the above-mentioned electrolytic capacitor, the specific method comprises the following steps;

[0014] S1, inserting the movable plate into the movable slot, and the tray into the insertion slot;

[0015] S2, placing the core package into the housing, connecting the wedge plate to the movable ring through one of the plug-in rods, then fitting the movable ring to the movable plate, and plugging and fixing the movable ring to the movable plate through another plug-in rod;

[0016] S3, then, the adhesive cover plate is installed, the adhesive cover plate is adhered to the top of the movable ring and drives the movable ring to move along the inside of the shell, so that the wedge plate is moved downward and the rotating plate is rotated, thereby pressing the top and bottom positions of the pressing plate, so that the pressing plate is pressed against the outer surface of the core package, and the preparation is completed and put into use;

[0017] S4. When an explosion occurs and the bottom of the tray explodes along the explosion-proof groove, or when the core package needs to be replaced, the tray is moved along the plug-in groove, and the movable plate is separated from the movable ring.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] By pressing the movable ring, the movable plate and the wedge plate are pressed downward. On the one hand, the wedge plate moves downward, so that the pressing plate moves along the movable groove and presses against the outer surface of the core package. On the other hand, the movable plate moves downward, driving the rotating plate to move downward and contact the fixed plate, so that the rotating plate moving downward rotates and presses against the pressing plate, so that the wedge plate and the rotating plate act together to act on the top and bottom of the pressing plate, so that the pressing plate is firmly pressed against the outer surface of the core package, thereby fixing the core package. This method is simple to install and easy to operate.

[0020] When the core package inside the shell needs to be replaced, the tray is moved away from the plug-in slot, and the tray is also separated from the shell. Since the wedge plate presses against the top of the pressure plate and the top of the core package is clamped, the core package is pulled out from the bottom, which makes it easy to take out the internal core package and reinsert the core package at the top of the shell from the bottom of the shell. The top of the core package is first reinserted and fixed by fitting the inclined surface of the wedge plate. This method is easy to operate and easy to replace. Finally, the tray is replaced, and the movable plate is moved along the movable slot so that the movable plate is once again connected and fixed to the movable ring through the plug-in rod. This method is simple to disassemble and can complete the replacement without destroying the shell. It has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the shell section and the internal structure of the shell of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the core package of the present invention being detached from the outer shell;

[0024] Figure 4 This is a structural schematic diagram of the tray detachable insertion slot of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the adhesive cover plate of the present invention being detached from the movable ring and the outer shell;

[0026] Figure 6 It is a structural schematic diagram of the movable plate, the pressing plate and the wedge plate detached from the movable groove of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the movable ring of the present invention being detached from two plug-in rods;

[0028] Figure 8 It is a schematic diagram of the structure of the pressing plate and the wedge-shaped block of the present invention being away from the movable plate;

[0029] Fig. 9 It is a schematic diagram of the matching structure of the rotating plate and the movable plate of the present invention.

[0030] In the figure: 1. shell; 2. adhesive cover plate; 3. core package; 4. welding pin; 5. movable ring; 6. tray; 7. explosion-proof groove; 8. movable plate; 9. pressure plate; 10. wedge plate; 11. rotating plate; 12. fixed plate; 13. movable groove; 14. rotating groove; 15. plug-in groove; 16. plug-in rod; 17. elastic member; 18. convex rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 9 The present invention provides an electrolytic capacitor, comprising a shell 1 and a viscose cover plate 2 covered on the shell 1, a core package 3 is arranged in the shell 1, and the core package 3 is connected to a welding pin 4 passing through the viscose cover plate 2 through a lead wire; and further comprising: a movable ring 5 pressed and matched with the viscose cover plate 2, a tray 6 slidably matched with the bottom of the shell 1, an explosion-proof groove 7 is provided on the tray 6, a movable plate 8 pressed and matched with the movable ring 5 is connected to the tray 6, a pressing plate 9 is sandwiched between the side of the movable plate 8 and the core package 3, and a clamping plate 9 is provided below the movable ring 5 and is engaged with the top of the pressing plate 9 The matching wedge plate 10, the movable plate 8 is rotatably connected with a rotating plate 11 that is pressed against the bottom end of the pressing plate 9; the installation component, when the movable plate 8 is lowered, the pressing plate 9 is pressed against the core package 3 through the wedge plate 10 and the rotating plate 11; the matching component, when the core package 3 is replaced or the capacitor explodes, the rotating plate 11 is separated from the pressing plate 9 to ensure the pressing effect on the core package 3, and the tray 6 is separated from the shell 1 first, and the replacement is gradually carried out, and the edge of the movable ring 5 is tightly clamped with the inner wall of the shell 1;

[0033] A method for preparing an electrolytic capacitor, using the above-mentioned electrolytic capacitor, the specific method comprises the following steps;

[0034] S1, insert the movable plate 8 into the movable groove 13, the tray 6 enters the insertion groove 15, and the tray 6 blocks the bottom of the housing 1;

[0035] S2, put the core package 3 into the housing 1, connect the wedge plate 10 with the movable ring 5 through one of the plug-in rods 16, then fit the movable ring 5 to the movable plate 8, and plug and fix the movable ring 5 with the movable plate 8 through another plug-in rod 16;

[0036] S3, then, install the adhesive cover plate 2, which is adhered to the top of the movable ring 5 and drives the movable ring 5 to move along the inside of the shell 1, so that the wedge plate 10 is downward and the rotating plate 11 is rotated, thereby pressing the top and bottom positions of the pressing plate 9, so that the pressing plate 9 is pressed against the outer surface of the core package 3, and the preparation is completed and put into use;

[0037] The mounting assembly includes a fixed plate 12 connected and fixed to the housing 1 and matched with the rotating plate 11, a movable groove 13 movably matched with the pressing plate 9 is provided on the inner side of the housing 1, a rotating groove 14 rotatably connected to the rotating plate 11 is provided on the movable plate 8, and a plug-in groove 15 plug-in matched with the tray 6 is provided at the bottom of the housing 1;

[0038] The mating assembly includes two symmetrically and obliquely distributed plug rods 16, the plug rods 16 are elastic rods, the tops of the two plug rods 16 are connected and fixed to the movable ring 5, and the two plug rods 16 are distributed and inserted into the tops of the movable plate 8 and the wedge plate 10;

[0039] In the present application, by pressing the movable ring 5, the movable ring 5 presses the movable plate 8 and the wedge plate 10 to move downward (the movable plate 8 moves downward a small distance, and the tray 6 will not be separated from the plug-in slot 15, and the tray 6 and the shell 1 are in a sealing device). On the one hand, the wedge plate 10 moves downward, and the inclined surface of the wedge plate 10 makes the pressing plate 9 move along the movable slot 13, so that the pressing plate 9 presses against the outer surface of the core package 3. On the other hand, the movable plate 8 moves downward, driving the rotating plate 11 to move downward, and the rotating plate 11 moving downward contacts the fixed plate 12, and under the restriction of the fixed plate 12, the rotating plate 11 moving downward rotates, so that the end of the rotating plate 11 presses against the pressing plate 9, so that the wedge plate 10 and the rotating plate 11 work together to act on the top and bottom of the pressing plate 9, so that the pressing plate 9 is firmly pressed against the outer surface of the core package 3, thereby fixing the core package 3;

[0040] The top of the housing 1 is sealed by an adhesive cover plate 2, and the adhesive cover plate 2 is plugged and fixed with two welding pins 4;

[0041] Wherein, the wedge plate 10 and the movable plate 8 move downward synchronously due to the inclined plug rod 16;

[0042] S4. When an explosion occurs and the bottom of the tray 6 explodes along the explosion-proof groove 7, or when the core package 3 needs to be replaced, the tray 6 is moved along the plug-in groove 15, and the movable plate 8 is separated from the movable ring 5.

[0043] In the present application, when an explosion occurs, the interior of the shell 1 is closed, and the huge pressure causes the bottom of the tray 6 to explode, and the bottom of the tray 6 is cracked along the plug-in explosion-proof groove 7, thereby releasing the internal pressure of the shell 1. At the same time, the pressure causes the tray 6 to move away from the plug-in groove 15, and the movable plate 8 moves downward, and the movable plate 8 is separated from the plug-in rod 16. The rotating plate 11 continues to rotate and move downward, and is separated from the pressing plate 9, and the wedge plate 10 continues to act on the pressing plate 9, so that the pressing plate 9 is fixed, and the movable plate 8 continues to move downward, and the tray 6 is separated from the shell 1. This method helps to eliminate the effect of newspapers, the pressure relief effect of the explosion-proof groove 7 during the explosion, and the pressure relief effect of the movement of the tray 6, thereby reducing the impact of the explosion on the electrolytic capacitor;

[0044] The connection between the movable plate 8 and the tray 6 is a detachable fixed installation, which is convenient for installation and replacement of the core package 3 and the tray 6 for next use.

[0045] Similarly: when the core package 3 inside the shell 1 needs to be replaced, the tray 6 is moved away from the plug-in slot 15 through mechanical equipment, and the tray 6 is also separated from the shell 1. Since the wedge plate 10 presses against the top of the pressure plate 9, the top of the core package 3 is clamped, and the core package 3 is pulled out from the bottom, which makes it easy to take out the internal core package 3, and reinsert the core package 3 at the top of the shell 1 from the bottom of the shell 1. The top of the core package 3 is first reinserted and fixed by fitting the inclined surface of the wedge plate 10. This method is easy to operate and easy to replace. Finally, the tray 6 is replaced, and the movable plate 8 is moved along the movable slot 13, so that the movable plate 8 is once again connected and fixed to the movable ring 5 through the plug-in rod 16.

[0046] An elastic member 17 connected to the rotating groove 14 is provided above the rotating plate 11. The end of the rotating plate 11 is inclined. A convex rod 18 pressed against the fixed plate 12 is fixedly connected to the side of the rotating plate 11.

[0047] When the end of the rotating plate 11 presses against the pressing plate 9 , the elastic member 17 cooperates with the fixed plate 12 and the protruding rod 18 to make the end of the rotating plate 11 press firmly against the pressing plate 9 , thereby stabilizing the core package 3 .

[0048] The explosion-proof grooves 7 are distributed in a circle and are provided in three numbers. A protective film is adhered to the bottom of the explosion-proof grooves 7. According to the use of the electrolytic capacitor, when the use environment of the electrolytic capacitor is humid, the protective film is used to prevent moisture from affecting the inside of the electrolytic capacitor.

[0049] The core package 3 includes separator paper, cathode foil and anode foil, and the ends of the separator paper, cathode foil and anode foil are glued together by tape. In this method, the core package 3 is wound into a cylinder by the cathode foil, separator paper and anode foil in sequence. After the winding is completed, the ends of the cathode foil, separator paper and anode foil are glued and fixed by tape. The position of one of the pressure plates 9 corresponds to the position of the tape glued, which further ensures the winding stability of the core package 3.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrolytic capacitor, comprising: A shell (1) and an adhesive cover plate (2) arranged on the shell (1), a core package (3) being arranged inside the shell (1), and the core package (3) being connected to a welding pin (4) passing through the adhesive cover plate (2) via a lead line; It is characterized by further comprising: A movable ring (5) is sandwiched between the shell (1) and the adhesive cover plate (2); a tray (6) is slidably fitted at the bottom of the shell (1); an explosion-proof groove (7) is provided on the tray (6); a movable plate (8) is connected to the tray (6) and is pressed against the movable ring (5); a pressing plate (9) is sandwiched between the side of the movable plate (8) and the core package (3); a wedge plate (10) is provided below the movable ring (5) and is snap-fitted with the top end of the pressing plate (9); a rotating plate (11) is rotatably connected to the movable plate (8) and is pressed against the bottom end of the pressing plate (9); An installation component, wherein when the movable plate (8) is lowered, the installation component causes the pressing plate (9) to press against the core package (3) through the wedge plate (10) and the rotating plate (11); A matching component, when replacing the core package (3), the matching component causes the rotating plate (11) to be separated from the pressing plate (9), thereby ensuring the pressing effect on the core package (3) and at the same time causing the tray (6) to be separated from the outer shell (1) first, so as to be replaced step by step.

2. An electrolytic capacitor according to claim 1, characterized in that: The mounting assembly comprises a fixed plate (12) connected and fixed to the outer shell (1) and cooperating with the rotating plate (11); a movable groove (13) is provided on the inner side of the outer shell (1) and is movably cooperating with the pressure plate (9); a rotating groove (14) is provided on the movable plate (8) and is rotatably connected to the rotating plate (11); and a plug-in groove (15) is provided at the bottom of the outer shell (1) and is plug-in cooperating with the tray (6).

3. An electrolytic capacitor according to claim 2, characterized in that: The mating component comprises two symmetrically and obliquely distributed plug-in rods (16), wherein the plug-in rods (16) are elastic rods, the tops of the two plug-in rods (16) are connected and fixed to the movable ring (5), and the two plug-in rods (16) are distributed and inserted into the tops of the movable plate (8) and the wedge plate (10).

4. An electrolytic capacitor according to claim 3, characterized in that: An elastic member (17) connected to the rotating groove (14) is provided above the rotating plate (11).

5. An electrolytic capacitor according to claim 3, characterized in that: The explosion-proof grooves (7) are distributed in a circle and are provided in three numbers. A protective film is adhered to the bottom of the explosion-proof grooves (7).

6. An electrolytic capacitor according to claim 3, characterized in that: The core package (3) comprises isolation paper, cathode foil and anode foil, and the ends of the isolation paper, cathode foil and anode foil are adhered by adhesive tape, and the position of one of the pressing plates (9) corresponds to the position where the adhesive tape is adhered.

7. An electrolytic capacitor according to claim 3, characterized in that: The end of the rotating plate (11) is inclined, and a convex rod (18) is fixedly connected to the side of the rotating plate (11) and is pressed and matched with the fixed plate (12).

8. A method for preparing an electrolytic capacitor, characterized in that: Assembled using an electrolytic capacitor according to any one of claims 3 to 7, the specific method comprises the following steps; S1, inserting the movable plate (8) into the movable groove (13), and the tray (6) into the insertion groove (15); S2, placing the core package (3) into the housing (1), connecting the wedge plate (10) to the movable ring (5) via one of the plug-in rods (16), then fitting the movable ring (5) to the movable plate (8), and plugging and fixing the movable ring (5) to the movable plate (8) via another plug-in rod (16); S3, then, the adhesive cover plate (2) is installed, and the adhesive cover plate (2) is adhered to the top of the movable ring (5) and drives the movable ring (5) to move along the inside of the shell (1), so that the wedge plate (10) moves downward and the rotating plate (11) rotates, thereby pressing the top and bottom positions of the pressing plate (9), so that the pressing plate (9) presses against the outer surface of the core package (3), and the preparation is completed and put into use; S4. When an explosion occurs and the bottom of the tray (6) explodes along the explosion-proof groove (7), or when the core package (3) needs to be replaced, the tray (6) is moved along the plug-in groove (15) and the movable plate (8) is separated from the movable ring (5).

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