Explosion-proof aluminum electrolytic capacitor
By using buffer components and housing clamping structure, exhaust holes and spring buffering systems in the aluminum electrolytic capacitor, the explosion problem caused by increasing internal pressure is solved, and the safety of the capacitor is improved and the installation convenience is facilitated.
Patent Information
- Application Number
- CN202420044213.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-08
AI Technical Summary
During use, the increase in pressure caused by internal heating of the aluminum electrolytic capacitor may cause the capacitor to explode, affecting the safety performance of the equipment.
An explosion-proof aluminum electrolytic capacitor is designed, using a buffer assembly and a housing to clamp the capacitor body, and an exhaust hole and a spring buffering system are installed in the housing to reduce internal pressure by squeezing the buffer block and spring to prevent explosion.
It effectively prevents the capacitor from exploded due to increased internal pressure, improves the safety performance of the equipment, and simplifies the installation and disassembly process.
Smart Images
Figure CN222146006U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of capacitors, and in particular to an explosion-proof aluminum electrolytic capacitor. Background Art
[0002] An electrolytic capacitor is a type of capacitor. The metal foil is the positive electrode (aluminum or tantalum), and the oxide film (aluminum oxide or tantalum pentoxide) in close contact with the positive electrode is the dielectric. The cathode is composed of a conductive material, an electrolyte (the electrolyte can be liquid or solid), and other materials. Because the electrolyte is the main part of the cathode, the electrolytic capacitor gets its name.
[0003] When an aluminum electrolytic capacitor is in use, the temperature inside the capacitor will rise, causing the internal pressure to increase, which may cause the capacitor casing to deform. At the same time, since the capacitor continues to operate without being powered off, the internal pressure of the capacitor will continue to increase, causing the capacitor to explode, affecting the use of circuit boards and other electrical components, and reducing the safety performance of the equipment. Therefore, an explosion-proof aluminum electrolytic capacitor casing is needed to meet people's needs. Utility Model Content
[0004] In order to prevent the capacitor from exploding, the present application provides an explosion-proof aluminum electrolytic capacitor.
[0005] The present application provides an explosion-proof aluminum electrolytic capacitor that adopts the following technical solution:
[0006] An explosion-proof aluminum electrolytic capacitor includes a capacitor body, a shell, a cover, and a buffer assembly. One end of the shell is open, and the cover covers the open end of the shell. The capacitor body is disposed within the shell. The cover has two first through-holes, and two pins of the capacitor body pass through the two first through-holes respectively. The buffer assembly is disposed between the capacitor body and the cover. One end of the capacitor body abuts the shell, and the other end of the capacitor body abuts the buffer assembly.
[0007] By adopting the above technical solution, the buffer assembly and the shell have a clamping effect on the capacitor body, thereby fixing the capacitor in the shell; when the pressure in the shell increases, the pressure squeezes the buffer assembly, thereby increasing the space in the shell, thereby reducing the pressure in the shell, and thus facilitating the prevention of explosion of the electrical appliance body.
[0008] Optionally, the buffer assembly includes a buffer block, a spring and a limiting sleeve; the end of the capacitor body abuts against the buffer block, two second through-holes are provided on the buffer block, and the two pins on the capacitor body pass through the two second through-holes respectively; the limiting sleeve is fixed on the cover body, one end of the spring abuts against the inner side wall of the limiting sleeve, and the other end of the spring abuts against the buffer block.
[0009] By adopting the above technical solution, when the pressure inside the shell increases, the pressure squeezes the buffer block, and the buffer block squeezes the spring, so that the buffer block moves toward the direction close to the cover body, thereby increasing the distance between the buffer block and the capacitor body, thereby reducing the pressure inside the shell, and thus facilitating the prevention of the explosion of the capacitor body; at the same time, since one end of the spring abuts against the inner wall of the limiting sleeve, the limiting sleeve has a limiting effect on the end of the spring during the compression process of the spring, thereby ensuring that the end of the spring will not be offset.
[0010] Optionally, a threaded hole is provided on the cover body, and the limiting sleeve is threadably engaged with the threaded hole.
[0011] By adopting the above technical solution, the convenience for workers to install and disassemble the limiting sleeve is increased, thereby making it easier for workers to replace the limiting sleeve.
[0012] Optionally, a positioning piece is provided on the buffer block, and the end of the spring is sleeved on the positioning piece.
[0013] By adopting the above technical solution, the positioning member has a limiting effect on the other end of the spring, thereby preventing the other end of the spring from deflecting.
[0014] Optionally, the positioning member includes a screw, an end of the screw passes through the buffer block, and the bolt is threadedly engaged with the buffer block; the end of the spring is sleeved on the screw.
[0015] By adopting the above technical solution, the screw has a positioning effect on the other end of the spring. At the same time, since the screw and the buffer block thread cooperate, the convenience of installing and removing the screw is increased.
[0016] Optionally, a nut is fixedly provided at the end of the screw rod, a relief groove is provided on the buffer block, the nut is located in the relief groove, and the thickness of the nut is less than the depth of the relief groove.
[0017] By adopting the above technical solution, the staff uses tools to rotate the nut, which saves effort compared to directly rotating the screw. At the same time, since the thickness of the nut is less than the depth of the avoidance groove 412, the end of the nut is ensured to be located in the avoidance groove, thereby protecting the capacitor body.
[0018] Optionally, the cover body is threadably engaged with the shell body.
[0019] By adopting the above technical solution, the convenience of workers in installing and disassembling the cover body is increased.
[0020] Optionally, a plurality of exhaust holes are provided on the shell.
[0021] By adopting the above technical solution, when the air pressure in the shell increases, part of the gas is discharged through the exhaust hole; the other part of the gas is squeezed through the buffer block and the spring, thereby further reducing the air pressure in the shell, thereby having an explosion-proof effect.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. The buffer assembly and the shell have a clamping effect on the capacitor body, thereby fixing the capacitor in the shell; when the pressure in the shell increases, the pressure squeezes the buffer assembly, thereby increasing the space in the shell, thereby reducing the pressure in the shell, and thus preventing the electrical body from exploding;
[0024] 2. When the pressure inside the housing increases, the pressure squeezes the buffer block, and the buffer block squeezes the spring, causing the buffer block to move toward the cover, thereby increasing the distance between the buffer block and the capacitor body, thereby reducing the pressure inside the housing, and thus preventing the capacitor body from exploding; at the same time, because one end of the spring abuts against the inner side wall of the limiting sleeve, the limiting sleeve has a limiting effect on the end of the spring during the compression process, thereby ensuring that the end of the spring will not deviate;
[0025] 3. It increases the convenience for workers to install and remove the limit sleeve, thereby making it easier for workers to replace the limit sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic structural diagram of an explosion-proof aluminum electrolytic capacitor in an embodiment of the present application.
[0027] Figure 2 It is a half-section view of the explosion-proof aluminum electrolytic capacitor in the embodiment of the present application.
[0028] Figure 3 yes Figure 2 A partial enlarged view of part A.
[0029] Description of reference numerals:
[0030] 1. Capacitor body; 2. Shell; 21. Exhaust hole; 3. Cover; 31. First through-hole; 32. Threaded hole; 4. Buffer assembly; 41. Buffer block; 411. Second through-hole; 412. Avoidance groove; 42. Spring; 43. Limiting sleeve; 44. Positioning member; 441. Screw; 442. Nut. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-3 This application is described in further detail.
[0032] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this application belongs. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are simply used to distinguish different components.
[0033] The embodiment of the present application discloses an explosion-proof aluminum electrolytic capacitor. Figure 1 and Figure 2 The explosion-proof aluminum electrolytic capacitor includes a capacitor body 1, a housing 2, and a cover 3. The housing 2 is open at one end and closed at the other. The cover 3 covers the open end of the housing 2. Specifically, the cover 3 is threadedly engaged with the housing 2, making it easier for workers to install and remove the cover 3. The capacitor body 1 is disposed within the housing 2. The cover 3 has two first through-holes 31 defined therein, through which the two pins of the capacitor body 1 pass.
[0034] Reference Figure 2 and Figure 3 The explosion-proof aluminum electrolytic capacitor also includes a buffer assembly 4, which is disposed between the capacitor body 1 and the cover 3. One end of the capacitor body 1 abuts against the housing 2, while the other end of the capacitor body 1 abuts against the buffer assembly 4. The buffer assembly 4 and the housing 2 clamp the capacitor body 1, thereby securing the capacitor within the housing 2.
[0035] Continue to refer to Figure 2 and Figure 3Specifically, the buffer assembly 4 includes a buffer block 41, a spring 42, and a limiting sleeve 43. The buffer block 41 is located inside the housing 2, with its curved sidewall abutting the inner sidewall of the housing 2. The buffer block 41 is located between the cover 3 and the capacitor body 1, with the end of the capacitor body 1 abutting the buffer block 41. The buffer block 41 has two second through-holes 411, through which the two pins on the capacitor body 1 pass. The limiting sleeve 43 is fixed to the cover 3. The end of the limiting sleeve 43 near the spring 42 is open. One end of the spring 42 abuts the inner sidewall of the limiting sleeve 43, and the other end of the spring 42 abuts the buffer block 41. When the pressure inside the housing 2 increases, the pressure squeezes the buffer block 41, which in turn squeezes the spring 42, causing the buffer block 41 to move toward the cover 3. This increases the distance between the buffer block 41 and the capacitor body 1, thereby reducing the pressure inside the housing 2 and preventing the capacitor body 1 from exploding. At the same time, since one end of the spring 42 abuts against the inner wall of the limiting sleeve 43, the limiting sleeve 43 limits the end of the spring 42 during the compression process of the spring 42, thereby ensuring that the end of the spring 42 will not deviate.
[0036] Continue to refer to Figure 2 and Figure 3 The housing 2 is also provided with a plurality of exhaust holes 21 extending therethrough. In this embodiment, there are five exhaust holes 21. When the air pressure within the housing 2 increases, some of the gas is discharged through the exhaust holes 21; the remaining gas is compressed by the buffer block 41 and the spring 42, further reducing the air pressure within the housing 2 and providing an explosion-proof effect.
[0037] Reference Figure 3 The cover body 3 is provided with a threaded hole 32, and the limiting sleeve 43 is threadedly matched with the threaded hole 32. This increases the convenience of the staff in installing and removing the limiting sleeve 43, thereby facilitating the staff to replace the limiting sleeve 43.
[0038] Continue to refer to Figure 3 The buffer block 41 is provided with a positioning member 44, and the end of the spring 42 is sleeved on the positioning member 44. The positioning member 44 has a limiting effect on the other end of the spring 42, thereby preventing the other end of the spring 42 from deflecting.
[0039] Continue to refer to Figure 3 Specifically, the positioning member 44 includes a screw 441. The end of the screw 441 passes through the buffer block 41, and the bolt is threadedly engaged with the buffer block 41. The end of the spring 42 is sleeved on the screw 441. The screw 441 has a positioning function for the other end of the spring 42. At the same time, the threaded engagement between the screw 441 and the buffer block 41 increases the convenience of installation and removal of the screw 441 by the staff.
[0040] Continue to refer to Figure 3 A nut 442 is fixedly mounted on the end of the screw rod 441. A relief groove 412 is formed on the buffer block 41. The nut 442 is located within the relief groove 412, and the thickness of the nut 442 is less than the depth of the relief groove 412. Using a tool to rotate the nut 442 saves effort compared to directly rotating the screw rod 441. Furthermore, because the thickness of the nut 442 is less than the depth of the relief groove 412, the end of the nut 442 is ensured to be located within the relief groove 412, thereby protecting the capacitor body 1.
[0041] The implementation principle of the above embodiment is as follows: a plurality of exhaust holes 21 are also provided on the shell 2. When the air pressure in the shell 2 increases, part of the gas is discharged through the exhaust holes 21; the other part of the gas is extruded by the buffer block 41 and the spring 42, thereby increasing the distance from the buffer block 41 to the end of the shell 2, thereby increasing the space between the buffer block 41 and the shell 2, thereby reducing the internal pressure, thereby further reducing the air pressure in the shell 2, and thus having an explosion-proof effect.
[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. An explosion-proof aluminum electrolytic capacitor, Features: The invention comprises a capacitor body (1), a shell (2), a cover body (3) and a buffer assembly (4); one end of the shell (2) is open, and the cover body (3) covers the open end of the shell (2); the capacitor body (1) is arranged in the shell (2), and two first lead holes (31) are provided on the cover body (3); two pins of the capacitor body (1) respectively pass through the two first lead holes (31); and the buffer assembly (4) is arranged between the capacitor body (1) and the cover body (3).
2. An explosion-proof aluminum electrolytic capacitor according to claim 1, Features: The buffer assembly (4) comprises a buffer block (41), a spring (42) and a limiting sleeve (43); the end of the capacitor body (1) abuts against the buffer block (41), the buffer block (41) is provided with two second lead holes (411), and two pins on the capacitor body (1) respectively pass through the two second lead holes (411); the limiting sleeve (43) is fixed on the cover body (3), one end of the spring (42) abuts against the inner side wall of the limiting sleeve (43), and the other end of the spring (42) abuts against the buffer block (41).
3. An explosion-proof aluminum electrolytic capacitor according to claim 2, Features: The cover body (3) is provided with a threaded hole (32), and the limiting sleeve (43) is threadably matched with the threaded hole (32).
4. The explosion-proof aluminum electrolytic capacitor according to claim 2, Features: The buffer block (41) is provided with a positioning piece (44), and the end of the spring (42) is sleeved on the positioning piece (44).
5. The explosion-proof aluminum electrolytic capacitor according to claim 4, Features: The positioning member (44) comprises a screw rod (441), the end of which passes through the buffer block (41), and the screw rod (441) is threadedly matched with the buffer block (41); the end of the spring (42) is sleeved on the screw rod (441).
6. The explosion-proof aluminum electrolytic capacitor according to claim 5, Features: A nut (442) is fixedly provided at the end of the screw rod (441), a position-avoiding groove (412) is provided on the buffer block (41), and the nut (442) is located in the position-avoiding groove (412).
7. The explosion-proof aluminum electrolytic capacitor according to claim 1, Features: The cover body (3) is threadably matched with the shell body (2).
8. The explosion-proof aluminum electrolytic capacitor according to claim 1, Features: The shell (2) is also provided with a plurality of exhaust holes (21).