An adaptive explosion-proof groove capacitor

Abstract

The present invention relates to the technical field of electrolytic capacitors, and discloses an adaptive explosion-proof groove capacitor, including an electrolytic capacitor body; an explosion-proof component, which is used for relieving pressure and explosion-proof when the temperature inside the electrolytic capacitor body is high. The explosion-proof component includes an explosion-proof groove opened on the outer surface of the bottom end of the outer shell, and a shape memory alloy filled in the explosion-proof groove. An arc-shaped cavity is opened on the inner top wall of the explosion-proof groove, and an arc-shaped sealing plate is slidably arranged on the inner wall of the arc-shaped cavity. By setting the explosion-proof component, during the actual use of the electrolytic capacitor, when the temperature inside the electrolytic capacitor rises to a specific temperature, the air pressure inside the electrolytic capacitor body can be discharged through the first pressure relief hole, the connection hole and the second pressure relief hole, so as to achieve the purpose of automatically relieving pressure inside the electrolytic capacitor body, thereby reducing the explosion risk of the electrolytic capacitor, and the explosion-proof measure of the electrolytic capacitor can be used repeatedly.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic capacitors, and more particularly to an adaptive explosion-proof groove capacitor. Background Art

[0002] Currently, capacitors on the market generally adopt an explosion-proof groove design with a fixed size, which can effectively prevent safety accidents caused by excessive internal pressure under normal working conditions. However, with the continuous improvement of the safety requirements of electrical equipment, traditional static explosion-proof measures have been difficult to meet the needs of increasingly complex application environments.

[0003] To address the above challenges, the industry usually takes two ways to improve the protection mechanism of traditional capacitors: one is to enhance the strength of the outer shell, and the other is to optimize the circuit protection strategy. The former resists greater internal pressure by using stronger materials or increasing the wall thickness, but this method will lead to increased costs and weight; the latter is to monitor abnormal current and cut off the power supply in a timely manner to avoid overload situations, but this method has a slow response speed to sudden failures and sometimes even cannot completely prevent accidents.

[0004] Although the above methods have improved the safety performance of capacitors to a certain extent, since they are all based on preset thresholds for judgment and processing, they lack flexibility and intelligence level, so there are still certain safety hazards. Especially in extreme working conditions (such as high temperature, high pressure), these fixed protection measures often seem inadequate and cannot respond quickly to changes in actual conditions.

[0005] Therefore, the present invention provides an adaptive explosion-proof groove capacitor. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The present invention provides an adaptive explosion-proof groove capacitor, including,

[0008] An electrolytic capacitor body, the electrolytic capacitor body includes an outer shell and metal terminals disposed inside the outer shell and extending to the outer surface of the outer shell, and a plurality of electrolyte film sheets are wound around the outer surfaces of the two metal terminals inside the outer shell;

[0009] An explosion-proof component is used to relieve pressure and prevent explosion when the temperature inside the electrolytic capacitor body rises. The explosion-proof component includes an explosion-proof groove opened on the outer surface of the bottom end of the housing, and a shape memory alloy filled and arranged inside the explosion-proof groove. An arc-shaped cavity is opened on the inner top wall of the explosion-proof groove, and an arc-shaped sealing plate is slidably arranged on the inner wall of the arc-shaped cavity. First pressure relief holes extending to the inside of the housing and second pressure relief holes extending to the outer surface of the housing are respectively opened on both inner walls of the arc-shaped cavity. A connection hole staggered from the first pressure relief hole and the second pressure relief hole is opened on the surface of the arc-shaped sealing plate. A sealing strip slidably connected to the inner wall of the explosion-proof groove is fixedly arranged at the bottom end of the arc-shaped sealing plate, and a limiting strip corresponding to the bottom end of the sealing strip is fixedly arranged on the inner wall of the explosion-proof groove. Rubber sealing sleeves are sleeved on the outer surfaces of the arc-shaped sealing plate and the sealing strip. A first return spring is fixedly arranged at the top end of the arc-shaped sealing plate, and the top end of the first return spring is fixedly connected to the inner top wall of the arc-shaped cavity.

[0010] By adopting the above technical solution, when the temperature inside the electrolytic capacitor rises to a specific temperature, under the action of the heat conduction effect, the shape memory alloy is locally heated above the critical point. At this time, the shape memory alloy will spontaneously deform according to its memory, causing the volume of the shape memory alloy inside the explosion-proof groove to expand, driving the sealing strip and the arc-shaped sealing plate to move upward, thereby driving the connection hole on the arc-shaped sealing plate to move upward to the middle of the first pressure relief hole and the second pressure relief hole, making the first pressure relief hole and the second pressure relief hole communicate, and further enabling the air pressure inside the electrolytic capacitor body to be discharged through the first pressure relief hole, the connection hole and the second pressure relief hole, achieving the purpose of automatically relieving pressure inside the electrolytic capacitor body.

[0011] Preferably, the material of the shape memory alloy is Nitinol, and the shape memory alloy can be replaced with a shape memory polymer prepared by doping carbon fiber tubes in a polyurethane matrix.

[0012] By adopting the above technical solution, Nitinol is preferably used as the raw material for the shape memory alloy because of its good biocompatibility and excellent corrosion resistance; the shape memory polymer can be selected to be prepared by doping carbon fiber tubes in a polyurethane matrix. Such composite materials not only have high mechanical strength but also exhibit excellent thermosensitive behavior.

[0013] Preferably, a fixing component for fixing the electrolytic capacitor body is arranged on the outer surface of the bottom end of the electrolytic capacitor body. The fixing component includes a fixing ring arranged on the outer surface of the bottom end of the electrolytic capacitor body.

[0014] By adopting the above technical solution, during the installation process of the electrolytic capacitor body, the fixing ring can be pre-fixed at a specified position through glue.

[0015] Preferably, an annular cavity is formed inside the fixing ring, and a plurality of mounting holes are formed in the inner wall of the annular cavity in a circumferential array. Fixing cylinders are fixedly arranged on the inner walls of the plurality of mounting holes. A sliding hole is formed in the inner wall of the fixing cylinder, and an internally threaded cylinder is slidably arranged in the inner wall of the sliding hole. An arc-shaped positioning plate is fixedly arranged at the end of the internally threaded cylinder, and a rubber anti-slip pad is fixedly arranged on the inner arc surface of the arc-shaped positioning plate.

[0016] By adopting the above technical solution, the arc-shaped positioning plate can be driven to abut against the outer surface of the electrolytic capacitor body by the extension of the internally threaded cylinder, so as to effectively clamp and fix the electrolytic capacitor body after installation. Moreover, the rubber anti-slip pad can effectively protect the outer surface of the electrolytic capacitor body.

[0017] Preferably, threaded posts corresponding to the plurality of fixing cylinders are rotatably arranged on the inner wall of the annular cavity. The threaded posts extend into the fixing cylinders and are threadedly connected to the inner walls of the internally threaded cylinders.

[0018] By adopting the above technical solution, the internally threaded cylinder can be automatically extended out by the rotation of the threaded post.

[0019] Preferably, an annular rotating hole is formed in the inner top wall of the annular cavity, and a rotating ring is rotatably arranged on the inner wall of the annular rotating hole through a bearing. A conical gear ring is fixedly arranged on the lower surface of the rotating ring. Driven conical gears are fixedly arranged on the outer surfaces of the plurality of threaded posts, and the plurality of driven conical gears are meshed with the conical gear ring. An operating handle for rotating the rotating ring is fixedly arranged on the upper surface of the rotating ring.

[0020] By adopting the above technical solution, the rotating ring can be rotated by operating the operating handle to drive the conical gear ring to rotate, so as to drive the plurality of driven conical gears and threaded posts to automatically rotate.

[0021] Preferably, two symmetrical limiting blocks are fixedly arranged on the outer surface of the end of the internally threaded cylinder, and strip-shaped limiting openings for the two limiting blocks to slide are formed in the inner wall of the fixing cylinder.

[0022] By adopting the above technical solution, the stability of the internally threaded cylinder during extension can be effectively ensured under the action of the limiting blocks.

[0023] Preferably, a reinforcement component for reinforcing the installation of the electrolytic capacitor body is arranged inside the fixing ring. The reinforcement component includes Z-shaped pressing plates respectively fixedly arranged on the surfaces of the two limiting blocks, and a telescopic airbag fixedly arranged on the inner wall of the annular cavity and corresponding to the Z-shaped pressing plate. The telescopic end of the telescopic airbag is fixedly connected to the surface of the Z-shaped pressing plate.

[0024] By adopting the above technical solution, the telescopic airbag can be automatically pressed by the Z-shaped pressing plate during the movement of the limiting blocks.

[0025] Preferably, the reinforcement component further includes a through hole formed in the inner wall of the annular cavity and a mounting cylinder fixed on the inner wall of the through hole. A reinforcement column is slidably arranged on the inner wall of the mounting cylinder, and a reinforcement groove corresponding to the reinforcement column is formed on the outer surface of the housing.

[0026] By adopting the above technical solution, the effective reinforcement of the electrolytic capacitor body can be realized by the protrusion of the reinforcement column and its insertion into the reinforcement groove.

[0027] Preferably, an expansion airbag column is fixed on the inner wall of the mounting cylinder. The end of the expansion airbag column is fixedly connected to the end of the reinforcement column. A connecting hose is arranged at the end of the expansion airbag column. One end of the connecting hose extends into the interior of the expansion airbag column, and the other end of the connecting hose extends into the interior of the expansion airbag column. Second return springs are fixed on the inner top wall and the inner bottom wall of the expansion airbag column.

[0028] By adopting the above technical solution, after the expansion airbag column is compressed, the airflow can be conveyed into the interior of the expansion airbag column through the connecting hose, causing the expansion airbag column to expand, so that the reinforcement column can be automatically protruded outward.

[0029] The beneficial effects of the present invention are as follows:

[0030] For an adaptive explosion-proof groove capacitor of the present invention, by providing an explosion-proof component, when the temperature inside the electrolytic capacitor rises to a specific temperature during actual use, the air pressure inside the electrolytic capacitor body can be discharged through the first pressure relief hole, the connection hole and the second pressure relief hole, so as to achieve the purpose of automatically relieving the pressure inside the electrolytic capacitor body, thereby reducing the explosion risk of the electrolytic capacitor, and the explosion-proof measure of the electrolytic capacitor can be reused.

[0031] For an adaptive explosion-proof groove capacitor of the present invention, by providing a fixing component, during the installation process of the electrolytic capacitor, a plurality of arc-shaped positioning plates can effectively clamp the bottom of the electrolytic capacitor body at the same time, so as to achieve the purpose of effectively fixing the installed electrolytic capacitor body, ensuring the stability of the electrolytic capacitor body during use after installation.

[0032] For an adaptive explosion-proof groove capacitor of the present invention, by providing a reinforcement component, during the process of the rotation of the threaded column driving the inner threaded cylinder to protrude, the effective fixation of the fixed electrolytic capacitor body can be realized, further ensuring the stability of the electrolytic capacitor body after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0034] Figure 2 is a schematic three-dimensional structure diagram of the electrolytic capacitor body of the present invention;

[0035] Figure 3 is a schematic cross-sectional structure diagram of the outer shell of the electrolytic capacitor body of the present invention;

[0036] Figure 4 is the present invention Figure 3 schematic enlarged structure diagram at position A;

[0037] Figure 5 is a schematic top view structure diagram of the fixing ring of the present invention;

[0038] Figure 6 is a schematic partial top cross-sectional structure diagram of the fixing ring of the present invention;

[0039] Figure 7 is the present invention Figure 6 schematic enlarged structure diagram at position B;

[0040] Figure 8 is a schematic cross-sectional structure diagram of the fixing ring of the present invention.

[0041] Explanation of reference numerals:

[0042] 100, electrolytic capacitor body; 101, outer shell; 102, metal terminal; 103, multi-layer electrolyte film;

[0043] 200, explosion-proof component; 201, explosion-proof groove; 202, shape memory alloy; 203, arc cavity; 204, arc sealing plate; 205, first pressure relief hole; 206, second pressure relief hole; 207, connection hole; 208, sealing strip; 209, limiting strip; 2010, rubber sealing sleeve; 2011, first return spring;

[0044] 300, fixing component; 301, fixing ring; 302, annular cavity; 303, fixing cylinder; 304, internal thread cylinder; 305, arc positioning plate; 306, rubber anti-slip pad; 307, threaded post; 308, rotating ring; 309, conical gear ring; 3010, driven conical gear; 3011, operating handle; 3012, limiting block; 3013, strip-shaped limiting opening;

[0045] 400, reinforcement component; 401, Z-shaped pressing plate; 402, telescopic airbag; 403, mounting cylinder; 404, reinforcement column; 405, reinforcement groove; 406, inflated airbag column; 407, connecting hose; 408, second return spring. Detailed implementation manners

[0046] Reference will now be made to example embodiments to discuss the subject matter described herein. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0047] The technical solution of the present invention will be further elaborated in detail below in conjunction with the accompanying drawings of the specification and specific embodiments. Please refer to Figures 1 to 8 , an adaptive explosion-proof groove capacitor provided by the present application. Please pay particular attention to Figures 1 to 4 , including an electrolytic capacitor body 100. The electrolytic capacitor body 100 includes a housing 101 and metal terminals 102 disposed inside the housing 101 and extending to the outer surface of the housing 101. A plurality of electrolyte film sheets 103 are wound around the outer surfaces of the two metal terminals 102 inside the housing 101; an explosion-proof component 200, which is used to relieve pressure and prevent explosion when the temperature inside the electrolytic capacitor body 100 is too high. The explosion-proof component 200 includes an explosion-proof groove 201 opened on the outer surface of the bottom end of the housing 101, and a shape memory alloy 202 filled and disposed inside the explosion-proof groove 201. The shape memory alloy 202 is an arc-shaped block structure. An arc-shaped cavity 203 is opened on the inner top wall of the explosion-proof groove 201, and an arc-shaped sealing plate 204 is slidably disposed on the inner wall of the arc-shaped cavity 203. First pressure relief holes 205 extending into the inside of the housing 101 and second pressure relief holes 206 extending to the outer surface of the housing 101 are respectively opened on the two inner side walls of the arc-shaped cavity 203. A connection hole 207 staggered from the first pressure relief holes 205 and the second pressure relief holes 206 is opened on the surface of the arc-shaped sealing plate 204. A sealing strip 208 fixedly connected to the inner wall of the explosion-proof groove 201 is fixedly provided at the bottom end of the arc-shaped sealing plate 204. A limiting strip 209 corresponding to the bottom end of the sealing strip 208 is fixedly provided on the inner wall of the arc-shaped cavity 203 and the explosion-proof groove 201. Rubber sealing sleeves 2010 are sleeved on the outer surfaces of the arc-shaped sealing plate 204 and the sealing strip 208. A first return spring 2011 is fixedly provided at the top end of the arc-shaped sealing plate 204, and the top end of the first return spring 2011 is fixedly connected to the inner top wall of the arc-shaped cavity 203; wherein, the function of the rubber sealing sleeve 2010 is to seal the gaps between the arc-shaped sealing plate 204 and the arc-shaped cavity 203 and between the arc-shaped sealing plate 204 and the explosion-proof groove 201 respectively when the arc-shaped sealing plate 204 is stationary, and at the same time seal the gap between the sealing strip 208 and the explosion-proof groove 201. Moreover, the contact surface between the outer surface of the shape memory alloy 202 and the inner wall of the explosion-proof groove 201 is sealed and fixed with glue, and at the same time, the top of the shape memory alloy 202 and the lower surface of the sealing strip 208 are sealed and fixed with glue.

[0048] Specifically, by setting the explosion-proof component 200, when the temperature inside the electrolytic capacitor rises to a specific temperature during actual use, the memory alloy 202 is locally heated to above the critical point under the effect of heat conduction. At this time, the memory alloy 202 will spontaneously deform according to the memory, causing the volume of the memory alloy 202 inside the explosion-proof groove 201 to expand, driving the sealing strip 208 and the arc-shaped sealing plate 204 to move upward, thereby driving the connecting hole 207 on the arc-shaped sealing plate 204 to move upward to the middle of the first pressure relief hole 205 and the second pressure relief hole 206, so that the first pressure relief hole 205 and the second pressure relief hole 206 are connected, thereby enabling the electrolytic capacitor to The air pressure inside the body 100 can be discharged through the first pressure relief hole 205, the connecting hole 207 and the second pressure relief hole 206, so as to achieve the purpose of automatically relieving the pressure inside the electrolytic capacitor body 100, thereby reducing the explosion risk of the electrolytic capacitor. Moreover, when the temperature inside the electrolytic capacitor decreases, the memory alloy 202 can return to its original state and drive the arc-shaped sealing plate 204 to move downward under the action of the first return spring 2011, so that the connecting hole 207 is staggered with the first pressure relief hole 205 and the second pressure relief hole 206, thereby achieving effective blocking of the first pressure relief hole 205 and the second pressure relief hole 206, thereby enabling the explosion-proof measures of the electrolytic capacitor to be repeatedly used.

[0049] Please refer to Figure 3 and Figure 4 The material of the memory alloy 202 is Nitinol, and the memory alloy 202 can be replaced by a shape memory polymer prepared by a polyurethane matrix doped with a carbon fiber tube.

[0050] Specifically, the memory alloy 202 preferably uses nitinol as the raw material because of its good biocompatibility and excellent corrosion resistance; the shape memory polymer can be prepared by doping a polyurethane matrix with a carbon fiber tube. This type of composite material not only has high mechanical strength but also exhibits excellent thermal sensitivity.

[0051] Please refer to Figure 1 and Figure 5 A fixing assembly 300 for fixing the electrolytic capacitor body 100 is disposed on the outer surface of the bottom end of the electrolytic capacitor body 100 . The fixing assembly 300 includes a fixing ring 301 disposed on the outer surface of the bottom end of the electrolytic capacitor body 100 .

[0052] Specifically, during the installation of the electrolytic capacitor body 100 , the fixing ring 301 can be fixed in advance at a designated position by glue.

[0053] Please refer to Figure 6 and Figure 7, an annular cavity 302 is formed inside the fixing ring 301, and a plurality of mounting holes are formed in the inner wall of the annular cavity 302 in a circumferential array. The inner walls of the plurality of mounting holes are fixedly provided with fixing cylinders 303. A sliding hole is formed in the inner wall of the fixing cylinder 303. An internally threaded cylinder 304 is slidably arranged in the inner wall of the sliding hole. An arc-shaped positioning plate 305 is fixedly provided at the end of the internally threaded cylinder 304. A rubber anti-slip pad 306 is fixedly provided on the inner arc surface of the arc-shaped positioning plate 305.

[0054] Specifically, the extension of the internally threaded cylinder 304 can drive the arc-shaped positioning plate 305 to tightly press against the outer surface of the electrolytic capacitor body 100, so as to effectively clamp and fix the electrolytic capacitor body 100 after installation. Moreover, the setting of the rubber anti-slip pad 306 can effectively protect the outer surface of the electrolytic capacitor body 100.

[0055] Please refer specifically to Figure 7 , a threaded column 307 corresponding to the plurality of fixing cylinders 303 is rotatably arranged on the inner wall of the annular cavity 302. The threaded column 307 extends into the fixing cylinder 303 and is threadedly connected to the inner wall of the internally threaded cylinder 304.

[0056] Specifically, the rotation of the threaded column 307 can drive the internally threaded cylinder 304 to automatically extend outwards.

[0057] Please refer specifically to Figure 8 , an annular rotating hole is formed in the inner top wall of the annular cavity 302. A rotating ring 308 is rotatably arranged on the inner wall of the annular rotating hole through a bearing. A conical gear ring 309 is fixedly provided on the lower surface of the rotating ring 308. Driven conical gears 3010 are fixedly provided on the outer surfaces of the plurality of threaded columns 307. The plurality of driven conical gears 3010 are all meshed with the conical gear ring 309. An operating handle 3011 for rotating the rotating ring 308 is fixedly provided on the upper surface of the rotating ring 308.

[0058] Specifically, by operating the operating handle 3011 to rotate the rotating ring 308, the conical gear ring 309 can be driven to rotate, so that the plurality of driven conical gears 3010 and the threaded columns 307 can be driven to rotate automatically.

[0059] Please refer specifically to Figure 7 , two symmetrical limiting blocks 3012 are fixedly provided on the outer surface of the end of the internally threaded cylinder 304. A strip-shaped limiting opening 3013 for the two limiting blocks 3012 to slide is formed in the inner wall of the fixing cylinder 303.

[0060] Specifically, the stability of the internally threaded cylinder 304 when extending out can be effectively ensured under the action of the limiting blocks 3012.

[0061] Among them, in the present invention, by setting the fixing component 300, during the installation process of the electrolytic capacitor, the fixing ring 301 can be fixed on the PCB board at a specified position through the adhesive liquid first. Then, the electrolytic capacitor passes through the PCB board through the metal terminal 102. After that, the operating handle 3011 is operated to rotate the rotating ring 308. The rotation of the rotating ring 308 drives the rotation of the conical gear ring 309. The rotation of the conical gear ring 309 drives the rotation of a plurality of driven conical gears 3010, thereby driving the simultaneous rotation of a plurality of threaded columns 307. The rotation of the threaded columns 307 drives the inner threaded cylinder 304 to extend outwards from the inside of the fixed cylinder 303, thereby driving the arc-shaped positioning plate 305 to move towards the middle, enabling a plurality of arc-shaped positioning plates 305 to effectively clamp the bottom of the electrolytic capacitor body 100 at the same time, and further achieving the purpose of effectively fixing the installed electrolytic capacitor body 100, ensuring the stability of the electrolytic capacitor body 100 during use after installation.

[0062] Please refer particularly to Figure 7 , a reinforcement component 400 for reinforcing the installation of the electrolytic capacitor body 100 is provided inside the fixing ring 301. The reinforcement component 400 includes Z-shaped pressing plates 401 respectively fixed on the surfaces of two limiting blocks 3012, and telescopic air bags 402 fixed on the inner wall of the annular cavity 302 and corresponding to the Z-shaped pressing plates 401. The telescopic end of the telescopic air bag 402 is fixedly connected to the surface of the Z-shaped pressing plate 401.

[0063] Specifically, during the movement of the limiting block 3012, the Z-shaped pressing plate 401 can be driven to automatically press the telescopic air bag 402.

[0064] Please refer particularly to Figure 7 , the reinforcement component 400 further includes a through hole opened on the inner wall of the annular cavity 302, and an installation cylinder 403 fixed on the inner wall of the through hole. A reinforcement column 404 is slidably arranged on the inner wall of the installation cylinder 403, and a reinforcement groove 405 corresponding to the reinforcement column 404 is opened on the outer surface of the housing 101.

[0065] Specifically, the effective reinforcement of the electrolytic capacitor body 100 can be achieved by the extension of the reinforcement column 404 and its insertion into the reinforcement groove 405.

[0066] Please refer particularly to Figure 7 , an expansion air bag column 406 is fixed on the inner wall of the installation cylinder 403. The end of the expansion air bag column 406 is fixedly connected to the end of the reinforcement column 404. And a connecting hose 407 is arranged at the end of the telescopic air bag 402. One end of the connecting hose 407 extends into the interior of the telescopic air bag 402, and the other end of the connecting hose 407 extends into the interior of the expansion air bag column 406. The inner top wall and the inner bottom wall of the telescopic air bag 402 are fixed with second return springs 408.

[0067] Specifically, after the telescopic airbag 402 is compressed, air can be conveyed through the connecting hose 407 to the inside of the inflatable airbag column 406, causing the inflatable airbag column 406 to expand, so that the reinforcing column 404 can be driven to automatically extend outwards.

[0068] Among them, by setting the reinforcing component 400, during the process of the rotation of the threaded column 307 driving the inner threaded cylinder 304 to extend, the limiting block 3012 can drive the Z-shaped pressing plate 401 to squeeze the telescopic airbag 402, so that the gas in the telescopic airbag 402 can enter the inside of the inflatable airbag column 406 through the connecting hose 407, causing the inflatable airbag column 406 to elongate, thereby driving the reinforcing column 404 to extend outwards inside the mounting cylinder 403 and inserting it into the reinforcing groove 405 on the outer shell 101, realizing the effective fixation of the fixed electrolytic capacitor body 100, and further ensuring the stability of the electrolytic capacitor body 100 after installation.

[0069] Working principle: During the actual use of the electrolytic capacitor, when the temperature inside the electrolytic capacitor rises to a specific temperature, the memory alloy 202 is locally heated to above the critical point under the effect of heat conduction. At this time, the memory alloy 202 will spontaneously deform according to the memory, causing the volume of the memory alloy 202 inside the explosion-proof groove 201 to expand, driving the sealing strip 208 and the arc-shaped sealing plate 204 to move upward, thereby driving the connecting hole 207 on the arc-shaped sealing plate 204 to move upward to the middle of the first pressure relief hole 205 and the second pressure relief hole 206, so that the first pressure relief hole 205 and the second pressure relief hole 206 are connected, so that the air pressure inside the electrolytic capacitor body 100 can pass through the first pressure relief hole 205, The connecting hole 207 and the second pressure relief hole 206 are discharged to achieve the purpose of automatically relieving the pressure inside the electrolytic capacitor body 100, thereby reducing the explosion risk of the electrolytic capacitor. When the temperature inside the electrolytic capacitor decreases, the memory alloy 202 can return to its original state and drive the arc-shaped sealing plate 204 to move downward under the action of the first reset spring 2011, so that the connecting hole 207 is staggered with the first pressure relief hole 205 and the second pressure relief hole 206, thereby achieving effective blocking of the first pressure relief hole 205 and the second pressure relief hole 206, thereby enabling the explosion-proof measures of the electrolytic capacitor to be repeatedly used. In addition, during the installation of the electrolytic capacitor, the fixing ring 301 can be first fixed at a specified position by glue. The electrolytic capacitor is passed through the metal terminal 102 on the PCB board at the position, and then the operating handle 3011 is operated to rotate the rotating ring 308. The rotation of the rotating ring 308 drives the bevel gear ring 309 to rotate. The rotation of the bevel gear ring 309 drives the several driven bevel gears 3010 to rotate, thereby driving the several threaded columns 307 to rotate at the same time. The rotation of the threaded column 307 drives the internal threaded cylinder 304 to extend outward from the inside of the fixed cylinder 303, thereby driving the arc positioning plate 305 to move toward the middle, so that the several arc positioning plates 305 can effectively clamp the bottom of the electrolytic capacitor body 100 at the same time, thereby effectively fixing the installed electrolytic capacitor body 100. The purpose is to ensure the stability of the electrolytic capacitor body 100 when it is used after installation. At the same time, when the threaded column 307 rotates to drive the internal threaded tube 304 to extend, the limit block 3012 can drive the Z-shaped pressure plate 401 to squeeze the telescopic airbag 402, so that the gas in the telescopic airbag 402 can enter the interior of the expansion airbag column 406 through the connecting hose 407, so that the expansion airbag column 406 is extended, thereby driving the reinforcement column 404 to extend outward from the inside of the installation tube 403 and insert it into the reinforcement groove 405 on the shell 101, thereby effectively fixing the electrolytic capacitor body 100 after being fixed, and further ensuring the stability of the electrolytic capacitor body 100 after installation.

[0070] The above-described embodiments of the specific implementation manners have been described, but these embodiments are not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of these embodiments, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of these embodiments.

Claims

1. An adaptive explosion-proof tank capacitor, characterized in that: include, An electrolytic capacitor body (100), the electrolytic capacitor body (100) comprising a shell (101) and metal terminals (102) arranged inside the shell (101) and extending to the outer surface of the shell (101), and the outer surfaces of the two metal terminals (102) inside the shell (101) are wound with a multilayer electrolyte membrane (103); An explosion-proof component (200) is used for pressure relief and explosion prevention when high temperature is generated inside an electrolytic capacitor body (100). The explosion-proof component (200) comprises an explosion-proof groove (201) provided on the outer surface of the bottom end of a shell (101), and a memory alloy (202) filled and arranged inside the explosion-proof groove (201). An arc-shaped cavity (203) is provided on the inner top wall of the explosion-proof groove (201), and an arc-shaped sealing plate (204) is slidably provided on the inner wall of the arc-shaped cavity (203). The inner walls on both sides of the arc-shaped cavity (203) are respectively provided with a first pressure relief hole (205) extending to the inside of the shell (101), and a second pressure relief hole (206) extending to the outer surface of the shell (101). The arc-shaped sealing plate (204) is provided on the inner wall of the arc-shaped cavity (203). The surface of the plate (204) is provided with a connection hole (207) staggered with the first pressure relief hole (205) and the second pressure relief hole (206); the bottom end of the arc-shaped sealing plate (204) is fixedly provided with a sealing strip (208) slidably connected to the inner wall of the explosion-proof groove (201); the inner wall of the explosion-proof groove (201) is fixedly provided with a limit strip (209) corresponding to the bottom end of the sealing strip (208); the outer surfaces of the arc-shaped sealing plate (204) and the sealing strip (208) are both sleeved with a rubber sealing sleeve (2010); the top end of the arc-shaped sealing plate (204) is fixedly provided with a first return spring (2011); and the top end of the first return spring (2011) is fixedly connected to the inner top wall of the arc-shaped cavity (203); A fixing component (300) for fixing the electrolytic capacitor body (100) is provided on the outer surface of the bottom end of the electrolytic capacitor body (100), and the fixing component (300) comprises a fixing ring (301) provided on the outer surface of the bottom end of the electrolytic capacitor body (100); An annular cavity (302) is provided inside the fixing ring (301), and a plurality of mounting holes are provided on the inner wall of the annular cavity (302) in a circumferential array, and a fixing cylinder (303) is fixedly provided on the inner walls of the plurality of mounting holes, a sliding hole is provided on the inner wall of the fixing cylinder (303), an internal thread cylinder (304) is slidably provided on the inner wall of the sliding hole, and an arc-shaped positioning plate (305) is fixedly provided at the end of the internal thread cylinder (304), and a rubber anti-skid pad (306) is fixedly provided on the inner arc surface of the arc-shaped positioning plate (305); The inner wall of the annular cavity (302) is rotatably provided with threaded columns (307) corresponding to a plurality of fixed cylinders (303); the threaded columns (307) extend into the interior of the fixed cylinder (303) and are threadedly connected to the inner wall of the internal threaded cylinder (304).

2. The adaptive explosion-proof slot capacitor according to claim 1, characterized in that: An annular rotating hole is formed on the inner top wall of the annular cavity (302), and a rotating ring (308) is rotatably provided on the inner wall of the annular rotating hole via a bearing, a bevel gear ring (309) is fixedly provided on the lower surface of the rotating ring (308), driven bevel gears (3010) are fixedly provided on the outer surfaces of a plurality of the threaded columns (307), and the plurality of driven bevel gears (3010) are meshed with the bevel gear ring (309), and an operating handle (3011) for rotating the rotating ring (308) is fixedly provided on the upper surface of the rotating ring (308).

3. The adaptive explosion-proof slot capacitor according to claim 1, characterized in that: Two symmetrical limiting blocks (3012) are fixedly arranged on the outer surface of the end of the internal threaded cylinder (304), and a strip-shaped limiting opening (3013) for the two limiting blocks (3012) to slide is opened on the inner wall of the fixed cylinder (303).

4. The adaptive explosion-proof slot capacitor according to claim 3, characterized in that: A reinforcement component (400) for reinforcing the electrolytic capacitor body (100) during installation is arranged inside the fixing ring (301), the reinforcement component (400) comprising a Z-shaped pressing plate (401) respectively fixed on the surfaces of two limit blocks (3012), and a telescopic airbag (402) fixed on the inner wall of the annular cavity (302) and corresponding to the Z-shaped pressing plate (401), the telescopic end of the telescopic airbag (402) being fixedly connected to the surface of the Z-shaped pressing plate (401).

5. The adaptive explosion-proof slot capacitor according to claim 4, characterized in that: The reinforcement component (400) further comprises a through hole formed on the inner wall of the annular cavity (302), and a mounting tube (403) fixedly mounted on the inner wall of the through hole; a reinforcement column (404) is slidably mounted on the inner wall of the mounting tube (403), and a reinforcement groove (405) corresponding to the reinforcement column (404) is formed on the outer surface of the housing (101).

6. The adaptive explosion-proof slot capacitor according to claim 5, characterized in that: An inflatable airbag column (406) is fixedly provided on the inner wall of the mounting tube (403), the end of the inflatable airbag column (406) is fixedly connected to the end of the reinforcement column (404), and a connecting hose (407) is provided on the end of the telescopic airbag (402), one end of the connecting hose (407) extends to the interior of the telescopic airbag (402), and the other end of the connecting hose (407) extends to the interior of the inflatable airbag column (406), and a second return spring (408) is fixedly provided on the inner top wall and the inner bottom wall of the telescopic airbag (402).

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