Low-internal-resistance large-current aluminum electrolytic capacitor

Abstract

The utility model relates to a low internal resistance heavy current aluminium electrolytic capacitor, belonging to the aluminium electrolytic capacitor technology field, comprising a capacitor body and a housing, the upper surface of the capacitor body is fixed on the upper surface of the inner cavity of the housing, the lower surface of the housing is fitted with a cover plate, the outer surface of the cover plate is fixed with a base plate, and the base plate is fixed on the inner cavity of the housing. A top plate is fixed to the outer surface of the shell, and a mounting mechanism is arranged in the bottom plate. According to the low-internal-resistance large-current aluminum electrolytic capacitor, a limiting ring is inserted into a limiting groove, an inserting rod is inserted into an inserting groove, a rotating handle is rotated, a threaded rod is driven to rotate in a threaded hole, a movable plate is driven to move, the movable plate drives a clamping block to move through a hinge rod, and the clamping block can move under the action of the hinge rod, a telescopic rod and a spring and is clamped into a clamping groove; the bottom plate and the top plate are fixed, and the cover plate and the shell are fixed, so that the sealing performance is improved, rapid disassembly and assembly are facilitated, and the capacitor body is convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolytic capacitors, in particular to a low internal resistance and high current aluminum electrolytic capacitor. Background Art

[0002] Aluminum electrolytic capacitors are currently widely used. However, with the development of miniaturization of electronic products, aluminum electrolytic capacitors are required to be smaller in size without damaging the capacity, which requires increasing the capacity of aluminum electrolytic capacitors.

[0003] For example, a Chinese patent (publication number: CN116978698A) discloses an aluminum electrolytic capacitor with a novel lead-out structure, including a shell, a core package and a seal, wherein the core package is sealed in the shell by the seal; the core package is wound by an anode foil, an electrolytic paper and a cathode foil, and an anode guide pin and an anode foil guide strip are electrically connected to the anode foil, and one end of the anode foil guide strip extends out of the core package and is electrically connected to the anode guide pin. In the present invention, by arranging an anode foil guide strip on the anode foil and electrically connecting the anode foil guide strip to the anode guide pin, there is more than one capacitor lead-out point on the anode foil, thereby making the internal resistance of the aluminum electrolytic capacitor low and having a strong ability to withstand large currents.

[0004] The above-mentioned aluminum electrolytic capacitor with a novel lead-out structure still has certain deficiencies. By arranging an anode foil strip on the anode foil and electrically connecting the anode foil strip to the anode guide pin, there is more than one capacitor lead-out point on the anode foil, so that the internal resistance of the aluminum electrolytic capacitor is low and the ability to withstand large current is strong. However, since the internal structure of the aluminum electrolytic capacitor is simple and there are many gaps, the compressive resistance of the aluminum electrolytic capacitor is low, which makes the aluminum electrolytic capacitor easily damaged when squeezed, thereby causing the aluminum electrolytic capacitor to be unusable, and it is inconvenient to repair the internal part, which affects the use of the aluminum electrolytic capacitor. Therefore, a low internal resistance and high current aluminum electrolytic capacitor is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a low internal resistance and high current aluminum electrolytic capacitor, which has the advantages of convenient disassembly and assembly, and solves the problem that the existing low internal resistance and high current aluminum electrolytic capacitor is inconvenient to disassemble and assemble.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low internal resistance and high current aluminum electrolytic capacitor, comprising a capacitor body and a shell, wherein the upper surface of the capacitor body is fixed to the upper surface of the inner cavity of the shell, the lower surface of the shell is attached with a cover plate, the outer surface of the cover plate is fixed with a bottom plate, the outer surface of the shell is fixed with a top plate, the interior of the bottom plate is provided with a mounting mechanism, the lower surface of the capacitor body is fixed with a connecting strip, and the lower surface of the connecting strip is fixed with a lead that penetrates and extends to the bottom of the cover plate;

[0007] The mounting mechanism includes a moving component and a limiting component. The moving component includes two plug rods fixed to the lower surface of the top plate and two slots opened on the upper surface of the bottom plate. The mounting mechanism also includes two threaded holes opened on the upper surface of the top plate. The internal threads of the threaded holes are connected to threaded rods. The lower surface of the threaded rod is rotatably connected to a moving plate through a bearing seat. The lower surface of the moving plate is hinged with two hinged rods.

[0008] Furthermore, the limit assembly includes a block hinged to the lower surface of the hinged rod, and the left and right sides of the slot cavity are provided with a slot, a telescopic rod is fixed between the two blocks, and a spring is sleeved on the outer surface of the telescopic rod.

[0009] Furthermore, a rotating handle is fixed on the upper surface of the threaded rod, and the insertion rod is slidably connected to the inside of the slot.

[0010] Furthermore, sliders are fixed on both the left and right sides of the movable plate, and sliding grooves are provided on both the left and right sides of the inner cavity of the insertion rod, and the sliders are slidably connected to the inside of the sliding grooves.

[0011] Furthermore, a limiting ring is fixed on the upper surface of the cover plate, and two limiting grooves are provided on the lower surface of the shell, and the limiting ring is slidably connected to the inside of the limiting grooves.

[0012] Furthermore, the clamping block is slidably connected to the inside of the clamping slot, and the left and right sides of the spring are respectively fixed to the opposite sides of the two clamping blocks.

[0013] Furthermore, a T-shaped block is fixed on the lower surface of the clamping block, a T-shaped groove is provided on the lower surface of the inner cavity of the insertion rod, and the T-shaped block is slidably connected to the inside of the T-shaped groove.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The low internal resistance and high current aluminum electrolytic capacitor has a limit ring inserted into a limit groove, an insert rod inserted into a slot, and a rotating handle is turned to drive the threaded rod to rotate in the threaded hole, thereby driving the movable plate to move. The movable plate drives the clamping block to move through the hinged rod. The clamping block moves under the action of the hinged rod, the telescopic rod and the spring, and is clamped into the inside of the clamping groove to fix the bottom plate and the top plate, and at the same time fix the cover plate and the shell, thereby improving the sealing performance, facilitating quick disassembly and assembly, and facilitating maintenance of the capacitor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a three-dimensional appearance diagram of the utility model;

[0018] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0019] In the figure: 1 cover plate, 2 bottom plate, 3 mounting mechanism, 301 plug rod, 302 slot, 303 threaded hole, 304 threaded rod, 305 moving plate, 306 hinge rod, 307 block, 308 slot, 309 telescopic rod, 310 spring, 4 top plate, 5 housing, 6 capacitor body, 7 connecting strip, 8 lead wire. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-2 In the present embodiment, a low internal resistance and high current aluminum electrolytic capacitor comprises a capacitor body 6 and a shell 5. The upper surface of the capacitor body 6 is fixed to the upper surface of the inner cavity of the shell 5. The lower surface of the shell 5 is fitted with a cover plate 1. The capacitor body 6 is protected by the shell 5 and the cover plate 1. The outer surface of the cover plate 1 is fixed with a bottom plate 2. The outer surface of the shell 5 is fixed with a top plate 4. Both the bottom plate 2 and the top plate 4 are annular. The upper surface of the bottom plate 2 is fitted to the lower surface of the top plate 4. An installation mechanism 3 is provided inside the bottom plate 2 for installing and fixing the bottom plate 2 and the top plate 4, and fixing the cover plate 1 and the shell 5. A connecting strip 7 is fixed to the lower surface of the capacitor body 6. A lead 8 penetrating and extending to the bottom of the cover plate 1 is fixed to the lower surface of the connecting strip 7. The capacitor body 6 cooperates with the lead 8 through the connecting strip 7 to play a role of low internal resistance and high current.

[0022] A limiting ring is fixed on the upper surface of the cover plate 1 , and two limiting grooves are provided on the lower surface of the housing 5 . The limiting rings are slidably connected to the inside of the limiting grooves to improve the sealing performance of the capacitor body 6 .

[0023] See also Figure 3In order to facilitate the installation of the shell 5 and the cover plate 1, the installation mechanism 3 in this embodiment includes a moving component and a limiting component. The moving component includes two plug rods 301 fixed to the lower surface of the top plate 4 and two slots 302 opened on the upper surface of the bottom plate 2. The installation mechanism 3 also includes two threaded holes 303 opened on the upper surface of the top plate 4. The internal threads of the threaded holes 303 are connected with threaded rods 304, which facilitate the rotation and movement of the threaded rods 304 in the threaded holes 303. The lower surface of the threaded rod 304 is rotatably connected to a moving plate 305 through a bearing seat. The threaded rod 304 rotates in the threaded hole 303 to drive the moving plate 305 to move. The lower surface of the moving plate 305 is hinged with two hinged rods 306.

[0024] The limiting assembly includes a block 307 hinged to the lower surface of the hinge rod 306. When the movable plate 305 moves, the block 307 is driven to move through the hinge rod 306. Card slots 308 are provided on the left and right sides of the inner cavity of the slot 302. A telescopic rod 309 is fixed between the two blocks 307. A spring 310 is sleeved on the outer surface of the telescopic rod 309. The two blocks 307 are moved in a straight line through the telescopic rod 309, and the blocks 307 are reset through the spring 310.

[0025] Among them, a rotating handle is fixed on the upper surface of the threaded rod 304 to facilitate the rotation of the threaded rod 304. The insertion rod 301 is slidably connected to the inside of the slot 302 to limit the bottom plate 2 and the top plate 4. Sliders are fixed on the left and right sides of the movable plate 305. Slide grooves are opened on the left and right sides of the inner cavity of the insertion rod 301. The sliders are slidably connected to the inside of the slide grooves to increase the stability of the movable plate 305 during movement and prevent the movable plate 305 from deviating during movement, thereby affecting the fixing effect of the bottom plate 2 and the top plate 4.

[0026] In addition, the block 307 is slidably connected to the inside of the slot 308, and is used to fix the bottom plate 2 and the top plate 4, and then to fix the outer shell 5 and the cover plate 1. The left and right sides of the spring 310 are respectively fixed to the opposite sides of the two blocks 307. The spring 310 provides thrust to the block 307 to improve stability during installation.

[0027] In addition, a T-shaped block is fixed on the lower surface of the block 307, and a T-shaped groove is opened on the lower surface of the inner cavity of the insertion rod 301. The T-shaped block is slidably connected to the inside of the T-shaped groove, which further increases the stability of the block 307 when moving and facilitates the block 307 to make linear motion.

[0028] The installation mechanism 3 in this embodiment inserts the limit ring into the limit groove, inserts the insertion rod 301 into the slot 302, and rotates the rotating handle to drive the threaded rod 304 to rotate in the threaded hole 303, driving the movable plate 305 to move. The movable plate 305 drives the block 307 to move through the hinge rod 306. The block 307 will move under the action of the hinge rod 306, the telescopic rod 309 and the spring 310, and be stuck in the inside of the card slot 308, thereby fixing the bottom plate 2 and the top plate 4, and at the same time fixing the cover plate 1 and the shell 5 to improve the sealing performance.

[0029] The working principle of the above embodiment is:

[0030] When the cover plate 1 needs to be installed, the limiting ring is inserted into the limiting groove and the insertion rod 301 is inserted into the slot 302 to limit the cover plate 1. At this time, the rotating handle is turned, and the rotating handle drives the threaded rod 304 to rotate in the threaded hole 303. The threaded rod 304 rotates to drive the moving plate 305 to move. The moving plate 305 will drive the slider to slide inside the sliding groove, thereby increasing the stability of the moving plate 305 when moving. When the moving plate 305 moves, it will drive the block 307 to move through the hinge rod 306. The block 307 will move under the action of the hinge rod 306, the telescopic rod 309 and the spring 310. At the same time, the block 307 will drive the T-shaped block to slide inside the T-shaped groove. When the block 307 is inserted into the inside of the slot 308, the bottom plate 2 and the top plate 4 are fixed, and the cover plate 1 and the shell 5 are fixed at the same time to improve the sealing performance.

[0031] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] 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. A low internal resistance and high current aluminum electrolytic capacitor, comprising a capacitor body (6) and a housing (5), wherein the upper surface of the capacitor body (6) is fixed to the upper surface of the inner cavity of the housing (5), characterized in that: The lower surface of the housing (5) is fitted with a cover plate (1), the outer surface of the cover plate (1) is fixed with a bottom plate (2), the outer surface of the housing (5) is fixed with a top plate (4), the interior of the bottom plate (2) is provided with a mounting mechanism (3), the lower surface of the capacitor body (6) is fixed with a connecting strip (7), and the lower surface of the connecting strip (7) is fixed with a lead wire (8) that penetrates and extends to the bottom of the cover plate (1); The mounting mechanism (3) comprises a moving assembly and a limiting assembly, wherein the moving assembly comprises two insertion rods (301) fixed to the lower surface of the top plate (4) and two slots (302) opened on the upper surface of the bottom plate (2), and the mounting mechanism (3) further comprises two threaded holes (303) opened on the upper surface of the top plate (4), wherein the internal threads of the threaded holes (303) are connected to threaded rods (304), wherein the lower surface of the threaded rod (304) is rotatably connected to a moving plate (305) via a bearing seat, and the lower surface of the moving plate (305) is hinged to two hinged rods (306).

2. A low internal resistance and high current aluminum electrolytic capacitor according to claim 1, characterized in that: The limit assembly comprises a clamping block (307) hinged to the lower surface of the hinge rod (306), and clamping grooves (308) are provided on both the left and right sides of the inner cavity of the slot (302). A telescopic rod (309) is fixed between the two clamping blocks (307), and a spring (310) is sleeved on the outer surface of the telescopic rod (309).

3. A low internal resistance and high current aluminum electrolytic capacitor according to claim 1, characterized in that: A rotating handle is fixed on the upper surface of the threaded rod (304), and the insertion rod (301) is slidably connected to the inside of the slot (302).

4. A low internal resistance and high current aluminum electrolytic capacitor according to claim 1, characterized in that: Slide blocks are fixed on both the left and right sides of the movable plate (305), and slide grooves are provided on both the left and right sides of the inner cavity of the insertion rod (301), and the slide blocks are slidably connected to the inside of the slide grooves.

5. The low internal resistance and high current aluminum electrolytic capacitor according to claim 1, characterized in that: A limiting ring is fixed on the upper surface of the cover plate (1), and two limiting grooves are provided on the lower surface of the housing (5), wherein the limiting ring is slidably connected to the inside of the limiting grooves.

6. A low internal resistance and high current aluminum electrolytic capacitor according to claim 2, characterized in that: The clamping block (307) is slidably connected to the inside of the clamping slot (308), and the left and right sides of the spring (310) are respectively fixed to the opposite sides of the two clamping blocks (307).

7. A low internal resistance and high current aluminum electrolytic capacitor according to claim 2, characterized in that: A T-shaped block is fixed on the lower surface of the clamping block (307), a T-shaped groove is provided on the lower surface of the inner cavity of the insertion rod (301), and the T-shaped block is slidably connected to the inside of the T-shaped groove.

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