WO2021023122A1 - Explosion-proof electrolytic capacitor and mounting structure thereof - Google Patents

Explosion-proof electrolytic capacitor and mounting structure thereof Download PDF

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Publication number
WO2021023122A1
WO2021023122A1 PCT/CN2020/106344 CN2020106344W WO2021023122A1 WO 2021023122 A1 WO2021023122 A1 WO 2021023122A1 CN 2020106344 W CN2020106344 W CN 2020106344W WO 2021023122 A1 WO2021023122 A1 WO 2021023122A1
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WO
WIPO (PCT)
Prior art keywords
explosion
proof
electrolytic capacitor
pressure relief
capacitor
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PCT/CN2020/106344
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French (fr)
Chinese (zh)
Inventor
许俊
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广州视源电子科技股份有限公司
广州视琨电子科技有限公司
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Application filed by 广州视源电子科技股份有限公司, 广州视琨电子科技有限公司 filed Critical 广州视源电子科技股份有限公司
Publication of WO2021023122A1 publication Critical patent/WO2021023122A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/08—Housing; Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/08—Housing; Encapsulation
    • H01G9/12—Vents or other means allowing expansion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/145—Liquid electrolytic capacitors

Definitions

  • This application relates to the field of capacitor explosion-proof, in particular to an explosion-proof electrolytic capacitor and its installation structure.
  • Capacitors are commonly used in our daily electrical appliances. Among them, electrolytic capacitors are widely used because of their large capacitance per unit volume and relatively low production cost.
  • the purpose of this application is to provide an explosion-proof electrolytic capacitor and its installation structure, so that the gas or electrolyte discharged from the electrolytic capacitor can buffer or collect.
  • An explosion-proof electrolytic capacitor includes a capacitor body and an explosion-proof shell.
  • the capacitor body has a tail.
  • the explosion-proof shell includes an outer shell.
  • the outer shell has an open end and a closed end.
  • At least an explosion-proof buffer cavity is arranged inside the closed end of the outer shell.
  • the open end It has a through opening, which communicates with the explosion-proof buffer cavity, and the tail of the capacitor body is connected with the open end of the outer shell.
  • a pressure relief channel is provided on the outer shell.
  • the pressure relief channel is a pressure relief hole provided on the end surface of the closed end.
  • the pressure relief channel is a pressure relief hole provided on the side wall of the closed end.
  • the pressure relief channel is a through groove provided on the side wall of the outer shell.
  • the through groove protrudes relative to the main body of the outer shell.
  • a limiting boss is arranged inside the closed end, and the explosion-proof buffer cavity is formed in the closed end and near the center of the limiting boss.
  • the tail of the capacitor body is inserted into the open end of the outer shell and is longitudinally restricted by the limiting boss.
  • the at least two limiting bosses are arranged along the side wall of the closed end, and the explosion-proof buffer cavity is at least partially located in the area between the limit bosses.
  • It includes a mounting body and the aforementioned explosion-proof electrolytic capacitor, and the capacitor body and the explosion-proof shell are respectively fixed on the mounting body.
  • the capacitor body has a first connecting piece
  • the explosion-proof shell has a second connecting piece
  • the capacitor body is fixed to the mounting body through the first connecting piece
  • the explosion-proof shell is fixed to the mounting body through a second connecting piece. Mount the body.
  • the second connecting piece is an explosion-proof fixing seat.
  • the second connecting member is a pin.
  • clamping feet There are two clamping feet, and the two clamping feet are arranged oppositely.
  • a hook is provided at the end of the clip.
  • the setting of the pressure relief channel can effectively release the internal gas of the explosion-proof buffer chamber, avoiding the excessive air pressure inside the explosion-proof buffer chamber from rushing the capacitor main body, affecting the structural stability of the capacitor main body, and thus affecting the stability of the circuit.
  • the pressure relief hole is arranged on the end surface of the closed end of the outer shell, and there is no block when the pressure is relieved, which is convenient for pressure relief.
  • Another setting position of the pressure relief hole is that the pressure relief hole is set on the side wall of the outer shell. Because it is arranged on the side wall of the outer shell, the pressure relief is to change the pressure relief direction perpendicular to the tail of the capacitor body. To be parallel to the tail of the capacitor body, the pressure of the gas will naturally decrease after turning, and the direction can be far away from the circuit board, so the exhausted gas is far away from the circuit board, avoiding the influence on other electrical components on the circuit board.
  • At least two pressure relief holes can be provided, and the locations of the two pressure relief holes are respectively located on the side wall of the outer shell and the end face of the closed end of the outer shell.
  • both pressure relief holes are provided on the side wall of the outer shell; in the second type, both pressure relief holes are provided on the closed end of the outer shell; if there is a barrier on the closed end of the outer shell completely Block, and there is a barrier on the side wall of the outer shell partly.
  • the first arrangement can be adopted. Even if one pressure relief hole is blocked, there is a second pressure relief hole for pressure relief; on the side of the outer shell There is a barrier on the wall to completely block, and a barrier at the closed end of the outer shell partially blocks.
  • the second arrangement can be adopted, even if one pressure relief hole is blocked, there is a second pressure relief hole for pressure relief.
  • the pressure relief channel is a through groove provided on the side wall of the outer casing, and the gas that needs to be discharged is discharged through the through groove.
  • the gas discharged from the capacitor body is first buffered and decompressed in the explosion-proof buffer chamber, and then discharged to the outside through the through groove Since the through groove provided on the side wall protrudes outward with respect to the main part of the outer shell, the volume of the explosion-proof buffer cavity is indirectly increased, and therefore, the buffer effect is enhanced to a certain extent.
  • the through groove protrudes relative to the main body of the outer shell, so it does not affect the sleeve of the capacitor main body on the explosion-proof shell.
  • the explosion-proof buffer cavity is formed in the closed end and the limit boss near the center position.
  • the “center position” here means: the explosion-proof buffer cavity is located in the circumferential inward area of the limit boss, which means In other words, the explosion-proof buffer cavity can be extended to the side of the limit boss. At this time, in the case of the closed end of the same diameter, the explosion-proof buffer cavity can have a larger volume.
  • the explosion-proof The closer the limit boss is to the center of the closed end, the explosion-proof The smaller the space of the buffer chamber, the distance between the limit boss and the center of the closed end can be controlled during processing, so that the space of the explosion-proof buffer chamber is different.
  • the better, the distance between the limit boss and the center position can be controlled according to the needs during processing, so as to produce explosion-proof electrolytic capacitors with different buffering effects. Therefore, when the capacitor body vents the gas, the gas is buffered in the explosion-proof buffer chamber, and the air pressure is reduced to prevent damage to the surrounding electrical components.
  • At least two limit bosses are set to limit the capacitor body to prevent the tail of the capacitor body from getting close to the end face of the closed end, which affects the size of the explosion-proof buffer cavity.
  • the limit boss is set on the side wall of the closed end , So that the internal obstruction of the explosion-proof buffer cavity is relatively reduced, and the strength of the limit protrusion can also be guaranteed.
  • the explosion-proof buffer cavity is at least partially located in the area between the limit bosses, so the space of the explosion-proof buffer cavity is effectively increased. The space of the explosion-proof buffer cavity is relatively increased, and the buffer space is also increased, so that the buffer effect is better.
  • the evenly arranged four limit protrusions can make the tail of the capacitor body receive uniform force, and prevent uneven force from affecting the structure and installation position of the capacitor body during installation.
  • the mounting body is a circuit board, and the capacitor body and the explosion-proof case are respectively fixed on the circuit board for installation, and each does not interfere with the installation.
  • the capacitor body is fixed on the mounting body through the first connecting piece to achieve fixation; while the explosion-proof shell is fixed on the mounting body through the second connecting piece to achieve fixation. There is no interference between the first connecting piece and the second connecting piece.
  • the installation position of the second connecting member may be affected by the accumulation of errors due to the installation error in the position of the first connecting member, so the fixing effect is relatively better.
  • the explosion-proof fixing seat is fixed on the installation body as a whole, which has the advantage of high strength compared with the way of clamping feet.
  • the installation position required for the card foot installation is relatively small, so the installation position opened on the installation body is small, which saves installation space.
  • the end of the clip is provided with a hook, and the hook is arranged to form an undercut. After the clip is clamped into the mounting body, the hook is clamped into the mounting body, so the installation of the explosion-proof housing is stable.
  • Fig. 1 is a schematic front view of an explosion-proof electrolytic capacitor in the first embodiment of the utility model
  • FIG. 2 is a schematic left view of the explosion-proof electrolytic capacitor in the first embodiment of the utility model
  • Figure 3 is a schematic front view of the explosion-proof housing of the first embodiment of the utility model
  • Fig. 4 is a schematic left view of the explosion-proof housing of the first embodiment of the utility model
  • Fig. 5 is a schematic top view of an explosion-proof housing with connectors in the first embodiment of the utility model
  • Fig. 6 is a schematic left view of the explosion-proof housing with connectors in the first embodiment of the utility model
  • Figure 7 is a schematic front view of the explosion-proof housing of the second embodiment of the utility model
  • Figure 8 is a schematic left view of the explosion-proof housing of the second embodiment of the utility model
  • Fig. 9 is a schematic front view of the explosion-proof housing with connectors in the third embodiment of the utility model.
  • Fig. 10 is a schematic left side view of the explosion-proof housing with connectors in the third embodiment of the utility model.
  • Capacitor body 11. Tail; 12. First connector; 20. Explosion-proof shell; 21. Outer shell; 211. Open end; 212. Closed end; 2121. End face; 213. Limiting boss; 214. Explosion-proof Buffer cavity; 22, pressure relief channel; 221, pressure relief hole; 222, through groove; 23, second connecting piece; 231, clip foot; 2311, hook; 232, explosion-proof fixing seat.
  • dotted lines in the figure indicate structures that cannot be seen in the reverse view, but in order to clear the position of the corresponding structure, it is drawn with a dotted line.
  • the explosion-proof electrolytic capacitor includes a capacitor body 10 and an explosion-proof shell 20.
  • the capacitor body 10 has a tail 11.
  • the explosion-proof shell includes an outer shell 21.
  • the outer shell 21 has an open end 211 and a closed end 212, at least An explosion-proof buffer cavity 214 is arranged inside the closed end 212 of the outer shell 211.
  • the open end 211 has a through opening that communicates with the explosion-proof buffer cavity 214.
  • the tail of the capacitor body 10 is connected to the open end 211 of the outer shell 21.
  • the explosion-proof housing 20 is provided with an explosion-proof buffer cavity 214, and the open end 211 communicates with the explosion-proof buffer cavity 214, when the capacitor body 10 releases the gas, the gas first enters the explosion-proof buffer cavity 214 for buffering.
  • the cavity 214 has a certain size of space, so the pressure decreases after the gas enters, which has a buffer effect.
  • the electrolyte When the capacitor body 10 discharges the electrolyte, the electrolyte is discharged into the explosion-proof buffer chamber 214, and the explosion-proof buffer chamber 214 is collected to avoid The electrolyte is directly discharged and corrodes other electrical components. It prevents high-pressure gas and electrolyte from damaging other electrical components, thereby playing a protective role.
  • the open end 211 and the closed end 212 on the outer shell 21 refer to the two ends of the outer shell, one of which is provided with a through hole, and the capacitor body 10 can be placed.
  • This end is the open end 211.
  • the through opening is an opening of the explosion-proof buffer cavity 214 connecting the open end 211 and the closed end 212, and its specific shape depends on the capacitor body; the end surface of the other end is mostly closed or completely closed, and this end is the closed end 212, the most closed or completely closed end surface is the end surface 2121 of the closed end 212.
  • a pressure relief channel 22 is provided on the outer shell 21.
  • the arrangement of the pressure relief channel 22 can effectively release the internal gas of the explosion-proof buffer cavity 214, and prevent the capacitor body 10 from being blown away by the excessive air pressure in the explosion-proof buffer cavity 214, which affects the structural stability of the capacitor body 10, thereby affecting the stability of the circuit.
  • the pressure relief channel 22 is a pressure relief hole 221 provided on the end surface 2121 of the closed end 212.
  • the pressure relief hole 221 is provided on the end surface 2121 of the closed end 212 of the outer shell 21, and there is no block when the pressure is relieved, facilitating pressure relief.
  • the pressure relief hole 221 is arranged on the side wall of the outer shell 21. Since it is arranged on the side wall of the outer shell 21, The pressure relief is to change the pressure relief direction that was originally perpendicular to the tail 11 of the capacitor body 10 to be parallel to the tail 11 of the capacitor body 10. After the gas is turned, the pressure will naturally become lower, and the direction can be away from the direction of the circuit board. Keep the gas away from the circuit board to avoid the influence on other electrical components on the circuit board.
  • At least two pressure relief channels 22 are provided, specifically two pressure relief holes 221 are set here, and the two pressure relief holes 221 are located on the side wall of the outer casing 21 and the outer casing 21 respectively.
  • this method can be used in a variety of environments. Because the installation environment and space are different, there are often pressure relief holes 221 in a single direction that will be blocked, so multiple pressure relief holes 221 are provided , You can avoid blocking in the same direction.
  • the two pressure relief holes 221 are both provided on the side wall of the outer shell 21; in the second type, the two pressure relief holes 221 are both provided on the end surface 2121 of the closed end 212 of the outer shell 21; The end surface 2121 of the closed end 212 of the body 21 is completely blocked by a barrier, and there is a barrier on the side wall of the outer shell 21 to partially block it.
  • the first arrangement described above can be used, even if a pressure relief hole 221 is blocked, there is a second Two pressure relief holes 221 perform pressure relief; there is a barrier on the side wall of the outer shell 21 to completely block, and the end surface 2121 of the closed end 212 of the outer shell 21 is partially blocked by a barrier.
  • the second arrangement can be adopted , Even if one pressure relief hole 221 is blocked, there is a second pressure relief hole 221 for pressure relief.
  • the closed end 212 is provided with a limiting boss 213.
  • the limiting boss 213 forms the explosion-proof buffer cavity 214 at a central position.
  • the tail 11 of the capacitor body 10 is inserted into the open end 211 of the outer housing 21 and It is longitudinally restricted by the restricting boss 213.
  • the open end 211 on the outer shell 21 of the explosion-proof housing 20 is sleeved on the tail of the capacitor body 10. Since the closed end 212 is provided with a limiting boss 213, when the tail of the capacitor body 10 is sleeved into the explosion-proof housing 20, Restricted by the limiting boss 213, the explosion-proof buffer cavity 214 is formed in the closed end 212 at a central position of the limiting boss 213.
  • the “center position” here means that the explosion-proof buffer cavity 214 is located at the limit.
  • the circumferential inward area of the position boss 213, that is, the explosion-proof buffer cavity 214 can extend to the side of the limit boss 213.
  • the explosion-proof buffer cavity 214 can be made larger Volume, the closer the limit boss 213 is to the center of the closed end 212, the smaller the space of the explosion-proof buffer cavity 214. Therefore, the distance between the limit boss 213 and the center of the closed end 212 can be controlled during processing to make the explosion-proof buffer cavity 214 The size of the space is different. The larger the space of the explosion-proof buffer chamber 214, the better the gas buffering effect. The distance between the limit boss 213 and the center position can be controlled during processing according to the needs to achieve the explosion-proof with different buffering effects. Electrolytic capacitors. Therefore, when the capacitor body 10 releases gas, the gas is buffered in the explosion-proof buffer chamber 214, and the air pressure is reduced to prevent damage to the surrounding electrical components.
  • the at least two limiting bosses 213 are arranged along the side wall of the closed end 212.
  • the explosion-proof buffer cavity 214 is at least Part of it is located in the area between the limiting bosses 213.
  • At least two limiting bosses 213 are provided to limit the capacitor body 10 to prevent the tail 11 of the capacitor body 10 from getting close to the end surface 2121 of the closed end 212, which affects the size of the explosion-proof buffer cavity 214.
  • the limit boss 213 is arranged on the side wall of the closed end 212, so that the internal obstruction of the explosion-proof buffer cavity 214 is relatively reduced, and the strength of the limiting protrusion can be ensured, and the explosion-proof buffer cavity 214 is at least partially located in the area between the limiting protrusions 213 Therefore, the space of the explosion-proof buffer cavity 214 is effectively increased, and the space of the explosion-proof buffer cavity 214 is relatively increased, and the buffer space provided is also increased, so that the buffer effect is better.
  • the distance between the two opposing limiting bosses 213 is the first size
  • the diameter of the tail 11 of the capacitor body 10 is the second size.
  • the first size is smaller than the second size, which prevents the capacitor body 10 from getting stuck in the two limiting projections.
  • the space size of the explosion-proof buffer cavity 214 is not affected by the capacitor main body 10.
  • the evenly arranged four limit protrusions can make the tail 11 of the capacitor main body 10 evenly stressed, so as to avoid the lack of force during installation. All affect the structure of the capacitor body 10 and the installation position.
  • the outer shell 21 and the limiting boss 213 are integrally stamped and formed of sheet metal.
  • the stamping of sheet metal can effectively reduce the volume and thickness of the explosion-proof shell 20.
  • metal material can be used for explosion-proof Shell 20; and the outer shell 21 and the limiting boss 213 can also be integrally molded by injection molding.
  • the cost of injection molding is slightly lower in processing, and the plastic material can effectively prevent corrosion.
  • the installation structure of the explosion-proof electrolytic capacitor includes a mounting body and an explosion-proof electrolytic capacitor.
  • the capacitor body 10 and the explosion-proof shell 20 are respectively fixed on the mounting body.
  • the mounting body is a circuit board, and the capacitor main body 10 and the explosion-proof housing 20 are respectively fixed on the circuit board for installation, and each does not interfere with the installation.
  • the capacitor body 10 has a first connector 12, the explosion-proof housing 20 has a second connector 23, and the capacitor body 10 is fixed to the capacitor body 10 through the first connector 12
  • the explosion-proof shell 20 is fixed to the mounting body through a second connecting piece 23.
  • the capacitor body 10 is fixed to the mounting body through the first connecting piece 12 to achieve fixation; while the explosion-proof housing 20 is fixed to the mounting body through the second connecting piece 23 to achieve fixation, the first connecting piece 12 and the second connecting piece
  • There is no interference between 23, and the installation position of the second connecting member 23 will not be affected by the accumulation of errors due to the installation error of the first connecting member 12, so the fixing effect is relatively better.
  • the second connecting member 23 is a pin 231.
  • the mounting position required for the clip 231 during installation is relatively small, so the mounting position provided on the mounting body is relatively small, which saves installation space.
  • the two clamping legs 231 are arranged oppositely.
  • the installation and installation of the two clips 231 are relatively stable.
  • the end of the clip 231 is provided with a hook 2311, the hook 2311 is arranged to form an undercut, the clip 231 is clamped into the mounting body, and the hook 2311 is clamped into the mounting body, so the explosion-proof
  • the installation of the shell 20 is relatively stable.
  • the pressure relief channel 22 is a through groove 222 provided in the side wall of the outer shell 21.
  • the gas that needs to be discharged is discharged through the through groove 222.
  • the gas discharged from the capacitor body 10 is first buffered and reduced in the explosion-proof buffer chamber, and then discharged to the outside through the through groove 222, because the through groove 222 provided on the side wall is opposite to the housing
  • the main body part of the body 21 protrudes outwards, so the volume of the explosion-proof buffer cavity 214 is indirectly increased, and therefore, the buffer effect is enhanced to a certain extent.
  • the through groove 222 protrudes outward with respect to the main body part of the outer shell 21, so that it does not affect the sleeve of the capacitor main body 10 on the explosion-proof casing 20.
  • the second connecting member 23 is an explosion-proof fixing seat.
  • the explosion-proof fixing seat is fixed on the mounting body as a whole, and has the advantage of high strength compared with the way of the clamping feet 231.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

The present application relates to the field of capacitor explosion prevention, and discloses an explosion-proof electrolytic capacitor, comprising a capacitor main body and an explosion-proof shell; the capacitor main body has a tail portion, the explosion-proof shell comprises an outer shell body, the outer shell body having an open end and a closed end; an explosion-proof buffer chamber is provided at least in the interior of the closed end of the outer shell body, the open end has a through port, the through port being in communication with the explosion-proof buffer chamber, and the tail portion of the capacitor main body is connected to the open end of the outer shell body. The invention achieves the function of buffering or collecting the gas or electrolytic solution released from the capacitor main body.

Description

防爆电解电容及其安装结构Explosion-proof electrolytic capacitor and its installation structure
本申请要求于2019年8月2日提交至中国国家知识产权局、申请号为201921250801.8、发明创造名称为“防爆电解电容及其安装结构”的专利申请的优先权。This application claims the priority of the patent application filed to the State Intellectual Property Office of China on August 2, 2019 with the application number 201921250801.8 and the invention titled "Explosion-proof electrolytic capacitor and its installation structure".
技术领域Technical field
本申请涉及电容防爆领域，特别是一种防爆电解电容及其安装结构。This application relates to the field of capacitor explosion-proof, in particular to an explosion-proof electrolytic capacitor and its installation structure.
背景技术Background technique
电容在我们日常电器中的使用十分普遍，其中电解电容由于其具有单位体积的电容量非常大，生产成本相对低，所以应用广泛。Capacitors are commonly used in our daily electrical appliances. Among them, electrolytic capacitors are widely used because of their large capacitance per unit volume and relatively low production cost.
但是，电解电容在出现异常开阀现象时或其他情况时，电解电容内部会产生大量气体，气压升高，需要将气体或电解液泄放出去，容易导致设置在电解电容附近的电器元件会发生损坏，造成不必要损失。However, when the electrolytic capacitor has abnormal valve opening or other conditions, a large amount of gas will be generated inside the electrolytic capacitor, and the pressure will increase, and the gas or electrolyte needs to be vented, which will easily cause electrical components installed near the electrolytic capacitor to occur. Damage, causing unnecessary losses.
发明内容Summary of the invention
本申请的目的在于提供一种防爆电解电容及其安装结构，实现电解电容泄放的气体或电解液起到缓冲或收集作用。The purpose of this application is to provide an explosion-proof electrolytic capacitor and its installation structure, so that the gas or electrolyte discharged from the electrolytic capacitor can buffer or collect.
其技术方案如下：The technical scheme is as follows:
防爆电解电容，包括电容主体及防爆壳，电容主体具有尾部，防爆壳包括外壳体，外壳体上具有开口端及封闭端，至少在外壳体的封闭端的内部设置有防爆缓冲腔，所述开口端具有贯通口，贯通口与防爆缓冲腔相通，电容主体的尾部与外壳体的开口端相接。An explosion-proof electrolytic capacitor includes a capacitor body and an explosion-proof shell. The capacitor body has a tail. The explosion-proof shell includes an outer shell. The outer shell has an open end and a closed end. At least an explosion-proof buffer cavity is arranged inside the closed end of the outer shell. The open end It has a through opening, which communicates with the explosion-proof buffer cavity, and the tail of the capacitor body is connected with the open end of the outer shell.
在所述外壳体上设有泄压通道。A pressure relief channel is provided on the outer shell.
所述泄压通道为至少两个。There are at least two pressure relief channels.
所述泄压通道为设于所述封闭端的端面的泄压孔。The pressure relief channel is a pressure relief hole provided on the end surface of the closed end.
所述泄压通道为设于所述封闭端侧壁的泄压孔。The pressure relief channel is a pressure relief hole provided on the side wall of the closed end.
所述泄压通道为设于所述外壳体侧壁的通槽。The pressure relief channel is a through groove provided on the side wall of the outer shell.
所述通槽相对于所述外壳体的主体部分凸出。The through groove protrudes relative to the main body of the outer shell.
所述封闭端内部设有限位凸台，在封闭端内、限位凸台靠中心位置形成所述防爆缓冲腔，电容主体的尾部***外壳体的开口端并被限位凸台纵向限位。A limiting boss is arranged inside the closed end, and the explosion-proof buffer cavity is formed in the closed end and near the center of the limiting boss. The tail of the capacitor body is inserted into the open end of the outer shell and is longitudinally restricted by the limiting boss.
所述限位凸台为至少两个，该至少两个所述限位凸台沿所述封闭端的侧壁设置，所述防爆缓冲腔至少部分位于限位凸台之间的区域。There are at least two limiting bosses, the at least two limiting bosses are arranged along the side wall of the closed end, and the explosion-proof buffer cavity is at least partially located in the area between the limit bosses.
所述限位凸台为四个，均布于所述封闭端的侧壁设置。There are four limiting bosses, which are evenly distributed on the side wall of the closed end.
包括安装体及前述防爆电解电容，电容主体及防爆壳分别固定于所述安装体上。It includes a mounting body and the aforementioned explosion-proof electrolytic capacitor, and the capacitor body and the explosion-proof shell are respectively fixed on the mounting body.
所述电容主体具有第一连接件，所述防爆壳具有第二连接件，所述电容主体通过第一连接件固定于所述安装体上，所述防爆壳通过第二连接件固定于所述安装体上。The capacitor body has a first connecting piece, the explosion-proof shell has a second connecting piece, the capacitor body is fixed to the mounting body through the first connecting piece, and the explosion-proof shell is fixed to the mounting body through a second connecting piece. Mount the body.
所述第二连接件为防爆固定座。The second connecting piece is an explosion-proof fixing seat.
所述第二连接件为卡脚。The second connecting member is a pin.
所述卡脚为两个，两个卡脚相对设置。There are two clamping feet, and the two clamping feet are arranged oppositely.
所述卡脚的端部设有卡钩。A hook is provided at the end of the clip.
下面对本申请的优点或原理进行说明：The advantages or principles of this application are described below:
1、将防爆壳的外壳体上的开口端靠近在电容主体的尾部，电容主体的尾部***开口端的贯通口，实现电容主体与外壳体之间的安装连接。由于防爆缓 冲腔具有一定大小的空间，所以气体进入后压力降低，起到缓冲效果，电容主体对电解液进行泄放时，将电解液排放进防爆缓冲腔，通过防爆缓冲腔的收集，避免了电解液直接排放腐蚀其他电器元件。防止了高压气体以及电解液对其他电器元件的破坏，进而起到一个保护作用。1. Place the open end on the outer shell of the explosion-proof housing close to the tail of the capacitor body, and insert the tail of the capacitor body into the through opening of the open end to realize the installation connection between the capacitor body and the outer shell. Because the explosion-proof buffer cavity has a certain size of space, the pressure decreases after the gas enters, which has a buffering effect. When the capacitor body discharges the electrolyte, the electrolyte is discharged into the explosion-proof buffer chamber, and the explosion-proof buffer chamber is collected to avoid Direct discharge of electrolyte corrodes other electrical components. It prevents high-pressure gas and electrolyte from damaging other electrical components, thereby playing a protective role.
2、泄压通道的设置可以有效的将防爆缓冲腔的内部气体释放出来，避免防爆缓冲腔内部气压过大将电容主体冲开，影响电容主体的结构稳定，从而影响到电路的稳定。2. The setting of the pressure relief channel can effectively release the internal gas of the explosion-proof buffer chamber, avoiding the excessive air pressure inside the explosion-proof buffer chamber from rushing the capacitor main body, affecting the structural stability of the capacitor main body, and thus affecting the stability of the circuit.
3、泄压孔设置在外壳体的封闭端的端面上，在泄压时没有阻挡，方便泄压。泄压孔的另一种设置位置，泄压孔设置在所述外壳体侧壁，由于设置在外壳体的侧壁上，在进行泄压是将原本垂直于电容主体尾部的泄压方向，更改为平行于电容主体尾部，气体经过转向后压力自然变低，而且该方向可以远离电路板的方向，所以***的气体远离电路板，避免了对电路板上的其他电器元件影响。3. The pressure relief hole is arranged on the end surface of the closed end of the outer shell, and there is no block when the pressure is relieved, which is convenient for pressure relief. Another setting position of the pressure relief hole is that the pressure relief hole is set on the side wall of the outer shell. Because it is arranged on the side wall of the outer shell, the pressure relief is to change the pressure relief direction perpendicular to the tail of the capacitor body. To be parallel to the tail of the capacitor body, the pressure of the gas will naturally decrease after turning, and the direction can be far away from the circuit board, so the exhausted gas is far away from the circuit board, avoiding the influence on other electrical components on the circuit board.
4、泄压孔可以设置至少两个，两个泄压孔的设置位置分别位于外壳体的侧壁上和外壳体的封闭端的端面上，采用该种方式可以适用多种环境，因为在安装环境和空间不同，往往存在单个方向的泄压孔会被阻塞，所以设置多个方向的泄压孔，可以规避在同一方向上堵塞的情况。4. At least two pressure relief holes can be provided, and the locations of the two pressure relief holes are respectively located on the side wall of the outer shell and the end face of the closed end of the outer shell. This method can be used in a variety of environments, because in the installation environment Unlike space, there are often pressure relief holes in a single direction that will be blocked, so setting pressure relief holes in multiple directions can avoid blockage in the same direction.
5、泄压孔的设置方式有两种。第一种，将两个泄压孔均设置在外壳体的侧壁上；第二种，两个泄压孔均设置在外壳体的封闭端上；若在外壳体的封闭端有阻挡物完全阻挡，而在外壳体的侧壁上有阻挡物部分阻挡，可以采用前述第一种设置方式，即使阻挡了一个泄压孔还有第二个泄压孔进行泄压作用；在外壳体的侧壁上有阻挡物完全阻挡，而在外壳体的封闭端有阻挡物部分阻挡，可以采用第二种设置方式，即使阻挡了一个泄压孔还有第二个泄压孔进行泄压作用。5. There are two ways to set the pressure relief hole. In the first type, both pressure relief holes are provided on the side wall of the outer shell; in the second type, both pressure relief holes are provided on the closed end of the outer shell; if there is a barrier on the closed end of the outer shell completely Block, and there is a barrier on the side wall of the outer shell partly. The first arrangement can be adopted. Even if one pressure relief hole is blocked, there is a second pressure relief hole for pressure relief; on the side of the outer shell There is a barrier on the wall to completely block, and a barrier at the closed end of the outer shell partially blocks. The second arrangement can be adopted, even if one pressure relief hole is blocked, there is a second pressure relief hole for pressure relief.
6、泄压通道为设于所述外壳体侧壁的通槽，将需要***的气体通过通槽排出，电容主体***的气体首先在防爆缓冲腔内缓冲减压，然后再通过通槽排出外部，由于在侧壁设置的通槽相对于所述外壳体的主体部分向外凸出，所以 间接增加了防爆缓冲腔的体积，因此在缓冲效果上起到一定的增强作用。6. The pressure relief channel is a through groove provided on the side wall of the outer casing, and the gas that needs to be discharged is discharged through the through groove. The gas discharged from the capacitor body is first buffered and decompressed in the explosion-proof buffer chamber, and then discharged to the outside through the through groove Since the through groove provided on the side wall protrudes outward with respect to the main part of the outer shell, the volume of the explosion-proof buffer cavity is indirectly increased, and therefore, the buffer effect is enhanced to a certain extent.
7、所述通槽相对于所述外壳体的主体部分凸出，所以可以不影响电容主体套设在防爆壳上。7. The through groove protrudes relative to the main body of the outer shell, so it does not affect the sleeve of the capacitor main body on the explosion-proof shell.
8、将防爆壳的外壳体上的开口端套设在电容主体的尾部，由于所述封闭端内部设有限位凸台，所以电容主体的尾部套设进防爆壳时，受到限位凸台的限位，而在封闭端内、限位凸台靠中心位置形成所述防爆缓冲腔，此处的“靠中心位置”是指：防爆缓冲腔位于限位凸台周向向内区域，也就说，防爆缓冲腔可以延伸至限位凸台的旁侧，此时在同等直径的封闭端的情况下，可以使防爆缓冲腔具有更大的容积，限位凸台越靠近封闭端的中心位置，防爆缓冲腔的空间越小，所以可以通过加工时控制限位凸台靠近封闭端中心位置的距离，使得防爆缓冲腔的空间大小不同，防爆缓冲腔的空间越大，起到的气体缓冲效果也就越好，可以根据需要在加工时控制限位凸台靠近中心位置的距离，达到制造不同缓冲效果的防爆电解电容。因此在电容主体对气体泄放时，气体在防爆缓冲腔内缓冲，气压降低，防止损坏周边电器元件。8. Sleeve the open end of the outer shell of the explosion-proof shell on the tail of the capacitor body. Since the closed end is provided with a limiting boss, when the tail of the capacitor body is sleeved into the explosion-proof shell, it will be affected by the limiting boss. Limit, and the explosion-proof buffer cavity is formed in the closed end and the limit boss near the center position. The “center position” here means: the explosion-proof buffer cavity is located in the circumferential inward area of the limit boss, which means In other words, the explosion-proof buffer cavity can be extended to the side of the limit boss. At this time, in the case of the closed end of the same diameter, the explosion-proof buffer cavity can have a larger volume. The closer the limit boss is to the center of the closed end, the explosion-proof The smaller the space of the buffer chamber, the distance between the limit boss and the center of the closed end can be controlled during processing, so that the space of the explosion-proof buffer chamber is different. The larger the space of the explosion-proof buffer chamber, the better the gas buffering effect. The better, the distance between the limit boss and the center position can be controlled according to the needs during processing, so as to produce explosion-proof electrolytic capacitors with different buffering effects. Therefore, when the capacitor body vents the gas, the gas is buffered in the explosion-proof buffer chamber, and the air pressure is reduced to prevent damage to the surrounding electrical components.
9、限位凸台设置的最少两个，对电容主体进行限位，避免电容主体的尾部贴近到封闭端的端面，影响到防爆缓冲腔的大小，此外，限位凸台设置在封闭端的侧壁，使得防爆缓冲腔的内部阻碍相对减少，也能保证限位凸起的强度得到保证，而防爆缓冲腔至少部分位于限位凸台之间的区域，所以有效的增加了防爆缓冲腔的空间，防爆缓冲腔的空间相对增大，起到的缓冲空间也就增大，从而使得缓冲效果更佳。9. At least two limit bosses are set to limit the capacitor body to prevent the tail of the capacitor body from getting close to the end face of the closed end, which affects the size of the explosion-proof buffer cavity. In addition, the limit boss is set on the side wall of the closed end , So that the internal obstruction of the explosion-proof buffer cavity is relatively reduced, and the strength of the limit protrusion can also be guaranteed. The explosion-proof buffer cavity is at least partially located in the area between the limit bosses, so the space of the explosion-proof buffer cavity is effectively increased. The space of the explosion-proof buffer cavity is relatively increased, and the buffer space is also increased, so that the buffer effect is better.
10、均匀排布的四个限位凸起可以使得电容主体的尾部均匀受力，安装时避免受力不均影响到电容主体的结构以及安装的位置。10. The evenly arranged four limit protrusions can make the tail of the capacitor body receive uniform force, and prevent uneven force from affecting the structure and installation position of the capacitor body during installation.
11、采用金属片冲压制成可以有效的缩小防爆壳的体积以及厚度，对于安装空间相对较少的时候可以采用金属材质的防爆壳；而采用注塑成型在加工的成本会稍低，而且塑料材质可以有效的防止腐蚀。11. The use of sheet metal stamping can effectively reduce the volume and thickness of the explosion-proof shell. For the installation space is relatively small, a metal explosion-proof shell can be used; and the processing cost of injection molding will be slightly lower, and the plastic material Can effectively prevent corrosion.
12、安装体为电路板，将电容主体和防爆壳分别固定在电路板上实现安装，各自不干扰安装。12. The mounting body is a circuit board, and the capacitor body and the explosion-proof case are respectively fixed on the circuit board for installation, and each does not interfere with the installation.
13、电容主体通过第一连接件固定在安装体上，实现固定；而防爆壳通过第二连接件固定在安装体上，实现固定，第一连接件和第二连接件之间不干扰，不会因为第一连接件的位置安装存在误差导致误差积累使得第二连接件的安装位置受影响，所以固定效果上相对较佳。13. The capacitor body is fixed on the mounting body through the first connecting piece to achieve fixation; while the explosion-proof shell is fixed on the mounting body through the second connecting piece to achieve fixation. There is no interference between the first connecting piece and the second connecting piece. The installation position of the second connecting member may be affected by the accumulation of errors due to the installation error in the position of the first connecting member, so the fixing effect is relatively better.
14、防爆固定座作为一个整体固定在安装体上，相比于卡脚的方式，具有强度高的优点。14. The explosion-proof fixing seat is fixed on the installation body as a whole, which has the advantage of high strength compared with the way of clamping feet.
15、卡脚安装时需要的安装位置相对较小，所以开设在安装体上的安装位置较小，节省了安装的空间。15. The installation position required for the card foot installation is relatively small, so the installation position opened on the installation body is small, which saves installation space.
16、两个卡脚的设置安装相对稳定，避免发生现象。具体地如图6所示，所述卡脚的端部设有卡钩，卡钩的设置形成倒扣，将卡脚卡进安装体后卡钩卡进安装体，所以防爆壳的安装稳定。16. The setting and installation of the two clips are relatively stable to avoid phenomena. Specifically, as shown in FIG. 6, the end of the clip is provided with a hook, and the hook is arranged to form an undercut. After the clip is clamped into the mounting body, the hook is clamped into the mounting body, so the installation of the explosion-proof housing is stable.
附图说明Description of the drawings
图1是实用新型实施例一的防爆电解电容主视示意图；Fig. 1 is a schematic front view of an explosion-proof electrolytic capacitor in the first embodiment of the utility model;
图2是实用新型实施例一的防爆电解电容左视示意图；2 is a schematic left view of the explosion-proof electrolytic capacitor in the first embodiment of the utility model;
图3是实用新型实施例一的防爆壳主视示意图；Figure 3 is a schematic front view of the explosion-proof housing of the first embodiment of the utility model;
图4是实用新型实施例一的防爆壳左视示意图；Fig. 4 is a schematic left view of the explosion-proof housing of the first embodiment of the utility model;
图5是实用新型实施例一的带连接件的防爆壳俯视示意图；Fig. 5 is a schematic top view of an explosion-proof housing with connectors in the first embodiment of the utility model;
图6是实用新型实施例一的带连接件的防爆壳左视示意图；Fig. 6 is a schematic left view of the explosion-proof housing with connectors in the first embodiment of the utility model;
图7是实用新型实施例二的防爆壳主视示意图；Figure 7 is a schematic front view of the explosion-proof housing of the second embodiment of the utility model;
图8是实用新型实施例二的防爆壳左视示意图；Figure 8 is a schematic left view of the explosion-proof housing of the second embodiment of the utility model;
图9是实用新型实施例三的带连接件的防爆壳主视示意图；Fig. 9 is a schematic front view of the explosion-proof housing with connectors in the third embodiment of the utility model;
图10是实用新型实施例三的带连接件的防爆壳左视示意图。Fig. 10 is a schematic left side view of the explosion-proof housing with connectors in the third embodiment of the utility model.
附图标记说明：Description of reference signs:
10、电容主体；11、尾部；12、第一连接件；20、防爆壳；21、外壳体；211、开口端；212、封闭端；2121、端面；213、限位凸台；214、防爆缓冲腔；22、泄压通道；221、泄压孔；222、通槽；23、第二连接件；231、卡脚；2311、卡钩；232、防爆固定座。10. Capacitor body; 11. Tail; 12. First connector; 20. Explosion-proof shell; 21. Outer shell; 211. Open end; 212. Closed end; 2121. End face; 213. Limiting boss; 214. Explosion-proof Buffer cavity; 22, pressure relief channel; 221, pressure relief hole; 222, through groove; 23, second connecting piece; 231, clip foot; 2311, hook; 232, explosion-proof fixing seat.
具体实施方式detailed description
下面对本申请的实施例进行详细说明。The embodiments of the application are described in detail below.
图中出现的虚线表示在视图反向上看不到的结构，但是为了清除表述相应结构的位置，所以采用虚线画出。The dotted lines in the figure indicate structures that cannot be seen in the reverse view, but in order to clear the position of the corresponding structure, it is drawn with a dotted line.
实施例一：Example one:
如图1至图4所示，防爆电解电容，包括电容主体10及防爆壳20，电容主体10具有尾部11，防爆壳包括外壳体21，外壳体21上具有开口端211及封闭端212，至少在外壳体211封闭端212的内部设置有防爆缓冲腔214，所述开口端211具有贯通口，贯通口与防爆缓冲腔214相通，电容主体10的尾部与外壳体21的开口端211相接。As shown in Figures 1 to 4, the explosion-proof electrolytic capacitor includes a capacitor body 10 and an explosion-proof shell 20. The capacitor body 10 has a tail 11. The explosion-proof shell includes an outer shell 21. The outer shell 21 has an open end 211 and a closed end 212, at least An explosion-proof buffer cavity 214 is arranged inside the closed end 212 of the outer shell 211. The open end 211 has a through opening that communicates with the explosion-proof buffer cavity 214. The tail of the capacitor body 10 is connected to the open end 211 of the outer shell 21.
将防爆壳20的外壳体21上的开口端211靠近在电容主体10的尾部11，电容主体10的尾部11与贯通口相对，是指电容主体10的尾部11***开口端211的贯通口，实现电容主体10与外壳体21之间的安装连接。由于，防爆壳20内部设置有防爆缓冲腔214，且开口端211与该防爆缓冲腔214相通，所以电容主体10对气体进行泄放时，气体先进入到防爆缓冲腔214内缓冲，由于防爆缓冲腔214具有一定大小的空间，所以气体进入后压力降低，起到缓冲效果，电容主体10对电解液进行泄放时，将电解液排放进防爆缓冲腔214，通过防爆缓冲腔214的收集，避免了电解液直接排放腐蚀其他电器元件。防止了高 压气体以及电解液对其他电器元件的破坏，进而起到一个保护作用。Place the open end 211 on the outer shell 21 of the explosion-proof housing 20 close to the tail 11 of the capacitor body 10. The tail 11 of the capacitor body 10 is opposite to the through opening, which means that the tail 11 of the capacitor body 10 is inserted into the through opening of the open end 211 to achieve The mounting connection between the capacitor body 10 and the outer housing 21. Since the explosion-proof housing 20 is provided with an explosion-proof buffer cavity 214, and the open end 211 communicates with the explosion-proof buffer cavity 214, when the capacitor body 10 releases the gas, the gas first enters the explosion-proof buffer cavity 214 for buffering. The cavity 214 has a certain size of space, so the pressure decreases after the gas enters, which has a buffer effect. When the capacitor body 10 discharges the electrolyte, the electrolyte is discharged into the explosion-proof buffer chamber 214, and the explosion-proof buffer chamber 214 is collected to avoid The electrolyte is directly discharged and corrodes other electrical components. It prevents high-pressure gas and electrolyte from damaging other electrical components, thereby playing a protective role.
需要说明的是，外壳体21上具有开口端211及封闭端212指的是外壳体两个端部，其中一个端部设置有贯通口，可以放置电容主体10，该端部为开口端211，该贯通口为连通开口端211与封闭端212内部的防爆缓冲腔214的一个开口，其具体形状视电容主体而定；另一个端部的端面大部分封闭或完全封闭，该端部为封闭端212，大部分封闭或完全封闭的端面为封闭端212的端面2121。It should be noted that the open end 211 and the closed end 212 on the outer shell 21 refer to the two ends of the outer shell, one of which is provided with a through hole, and the capacitor body 10 can be placed. This end is the open end 211. The through opening is an opening of the explosion-proof buffer cavity 214 connecting the open end 211 and the closed end 212, and its specific shape depends on the capacitor body; the end surface of the other end is mostly closed or completely closed, and this end is the closed end 212, the most closed or completely closed end surface is the end surface 2121 of the closed end 212.
如图1至图4所示，在所述外壳体21上设有泄压通道22。泄压通道22的设置可以有效的将防爆缓冲腔214的内部气体释放出来，避免防爆缓冲腔214内部气压过大将电容主体10冲开，影响电容主体10的结构稳定，从而影响到电路的稳定。As shown in FIGS. 1 to 4, a pressure relief channel 22 is provided on the outer shell 21. The arrangement of the pressure relief channel 22 can effectively release the internal gas of the explosion-proof buffer cavity 214, and prevent the capacitor body 10 from being blown away by the excessive air pressure in the explosion-proof buffer cavity 214, which affects the structural stability of the capacitor body 10, thereby affecting the stability of the circuit.
如图1和图2所示，所述泄压通道22为设于所述封闭端212的端面2121的泄压孔221。泄压孔221设置在外壳体21的封闭端212的端面2121上，在泄压时没有阻挡，方便泄压。As shown in FIGS. 1 and 2, the pressure relief channel 22 is a pressure relief hole 221 provided on the end surface 2121 of the closed end 212. The pressure relief hole 221 is provided on the end surface 2121 of the closed end 212 of the outer shell 21, and there is no block when the pressure is relieved, facilitating pressure relief.
如图3所示，示出在本实施例中泄压孔221的另一种设置位置，泄压孔221设置在所述外壳体21侧壁，由于设置在外壳体21的侧壁上，在进行泄压是将原本垂直于电容主体10尾部11的泄压方向，更改为平行于电容主体10尾部11，气体经过转向后压力自然变低，而且该方向可以远离电路板的方向，所以***的气体远离电路板，避免了对电路板上的其他电器元件影响。As shown in FIG. 3, another arrangement position of the pressure relief hole 221 is shown in this embodiment. The pressure relief hole 221 is arranged on the side wall of the outer shell 21. Since it is arranged on the side wall of the outer shell 21, The pressure relief is to change the pressure relief direction that was originally perpendicular to the tail 11 of the capacitor body 10 to be parallel to the tail 11 of the capacitor body 10. After the gas is turned, the pressure will naturally become lower, and the direction can be away from the direction of the circuit board. Keep the gas away from the circuit board to avoid the influence on other electrical components on the circuit board.
而本实施例中，泄压通道22设置至少两个，此处具体地设置为两个泄压孔221，两个泄压孔221的设置位置分别位于外壳体21的侧壁上和外壳体21的封闭端212的端面2121上，采用该种方式可以适用多种环境，因为在安装环境和空间不同，往往存在单个方向的泄压孔221会被阻塞，所以设置多个方向的泄压孔221，可以规避在同一方向上堵塞的情况。In this embodiment, at least two pressure relief channels 22 are provided, specifically two pressure relief holes 221 are set here, and the two pressure relief holes 221 are located on the side wall of the outer casing 21 and the outer casing 21 respectively. On the end surface 2121 of the closed end 212, this method can be used in a variety of environments. Because the installation environment and space are different, there are often pressure relief holes 221 in a single direction that will be blocked, so multiple pressure relief holes 221 are provided , You can avoid blocking in the same direction.
泄压孔221的设置方式有两种。第一种，将两个泄压孔221均设置在外壳体21的侧壁上；第二种，两个泄压孔221均设置在外壳体21的封闭端212的端面2121上；若在外壳体21的封闭端212的端面2121有阻挡物完全阻挡， 而在外壳体21的侧壁上有阻挡物部分阻挡，可以采用前述第一种设置方式，即使阻挡了一个泄压孔221还有第二个泄压孔221进行泄压作用；在外壳体21的侧壁上有阻挡物完全阻挡，而在外壳体21的封闭端212的端面2121有阻挡物部分阻挡，可以采用第二种设置方式，即使阻挡了一个泄压孔221还有第二个泄压孔221进行泄压作用。There are two ways to set the pressure relief hole 221. In the first type, the two pressure relief holes 221 are both provided on the side wall of the outer shell 21; in the second type, the two pressure relief holes 221 are both provided on the end surface 2121 of the closed end 212 of the outer shell 21; The end surface 2121 of the closed end 212 of the body 21 is completely blocked by a barrier, and there is a barrier on the side wall of the outer shell 21 to partially block it. The first arrangement described above can be used, even if a pressure relief hole 221 is blocked, there is a second Two pressure relief holes 221 perform pressure relief; there is a barrier on the side wall of the outer shell 21 to completely block, and the end surface 2121 of the closed end 212 of the outer shell 21 is partially blocked by a barrier. The second arrangement can be adopted , Even if one pressure relief hole 221 is blocked, there is a second pressure relief hole 221 for pressure relief.
所述封闭端212内部设有限位凸台213，在封闭端212内、限位凸台213靠中心位置形成所述防爆缓冲腔214，电容主体10的尾部11***外壳体21的开口端211并被限位凸台213纵向限位。The closed end 212 is provided with a limiting boss 213. In the closed end 212, the limiting boss 213 forms the explosion-proof buffer cavity 214 at a central position. The tail 11 of the capacitor body 10 is inserted into the open end 211 of the outer housing 21 and It is longitudinally restricted by the restricting boss 213.
将防爆壳20的外壳体21上的开口端211套设在电容主体10的尾部，由于所述封闭端212内部设有限位凸台213，所以电容主体10的尾部套设进防爆壳20时，受到限位凸台213的限位，而在封闭端212内、限位凸台213靠中心位置形成所述防爆缓冲腔214，此处的“靠中心位置”是指：防爆缓冲腔214位于限位凸台213周向向内区域，即防爆缓冲腔214可以延伸至限位凸台213的旁侧，此时在同等直径的封闭端212的情况下，可以使防爆缓冲腔214具有更大的容积，限位凸台213越靠近封闭端212的中心位置，防爆缓冲腔214的空间越小，所以可以通过加工时控制限位凸台213靠近封闭端212中心位置的距离，使得防爆缓冲腔214的空间大小不同，防爆缓冲腔214的空间越大，起到的气体缓冲效果也就越好，可以根据需要在加工时控制限位凸台213靠近中心位置的距离，达到制造不同缓冲效果的防爆电解电容。因此在电容主体10对气体泄放时，气体在防爆缓冲腔214内缓冲，气压降低，防止损坏周边电器元件。The open end 211 on the outer shell 21 of the explosion-proof housing 20 is sleeved on the tail of the capacitor body 10. Since the closed end 212 is provided with a limiting boss 213, when the tail of the capacitor body 10 is sleeved into the explosion-proof housing 20, Restricted by the limiting boss 213, the explosion-proof buffer cavity 214 is formed in the closed end 212 at a central position of the limiting boss 213. The “center position” here means that the explosion-proof buffer cavity 214 is located at the limit. The circumferential inward area of the position boss 213, that is, the explosion-proof buffer cavity 214 can extend to the side of the limit boss 213. At this time, in the case of the closed end 212 of the same diameter, the explosion-proof buffer cavity 214 can be made larger Volume, the closer the limit boss 213 is to the center of the closed end 212, the smaller the space of the explosion-proof buffer cavity 214. Therefore, the distance between the limit boss 213 and the center of the closed end 212 can be controlled during processing to make the explosion-proof buffer cavity 214 The size of the space is different. The larger the space of the explosion-proof buffer chamber 214, the better the gas buffering effect. The distance between the limit boss 213 and the center position can be controlled during processing according to the needs to achieve the explosion-proof with different buffering effects. Electrolytic capacitors. Therefore, when the capacitor body 10 releases gas, the gas is buffered in the explosion-proof buffer chamber 214, and the air pressure is reduced to prevent damage to the surrounding electrical components.
如图3和图4所示，所述限位凸台213为至少两个，该至少两个所述限位凸台213沿所述封闭端212的侧壁设置，所述防爆缓冲腔214至少部分位于限位凸台213之间的区域。限位凸台213设置的最少两个，对电容主体10进行限位，避免电容主体10的尾部11贴近到封闭端212的端面2121，影响到防爆缓冲腔214的大小，此外，限位凸台213设置在封闭端212的侧壁，使得防爆缓冲腔214的内部阻碍相对减少，也能保证限位凸起的强度得到保证，而防爆缓冲腔214至少部分位于限位凸台213之间的区域，所以有效的增加了防爆缓 冲腔214的空间，防爆缓冲腔214的空间相对增大，起到的缓冲空间也就增大，从而使得缓冲效果更佳。As shown in Figures 3 and 4, there are at least two limiting bosses 213. The at least two limiting bosses 213 are arranged along the side wall of the closed end 212. The explosion-proof buffer cavity 214 is at least Part of it is located in the area between the limiting bosses 213. At least two limiting bosses 213 are provided to limit the capacitor body 10 to prevent the tail 11 of the capacitor body 10 from getting close to the end surface 2121 of the closed end 212, which affects the size of the explosion-proof buffer cavity 214. In addition, the limit boss 213 is arranged on the side wall of the closed end 212, so that the internal obstruction of the explosion-proof buffer cavity 214 is relatively reduced, and the strength of the limiting protrusion can be ensured, and the explosion-proof buffer cavity 214 is at least partially located in the area between the limiting protrusions 213 Therefore, the space of the explosion-proof buffer cavity 214 is effectively increased, and the space of the explosion-proof buffer cavity 214 is relatively increased, and the buffer space provided is also increased, so that the buffer effect is better.
而在本实施例中，所述限位凸台213为四个，均布于所述封闭端212的侧壁设置。且两相对的限位凸台213的距离尺寸为第一尺寸，电容主体10的尾部11直径为第二尺寸，其中第一尺寸小于第二尺寸，避免了电容主体10卡进两个限位凸台213之间，从而控制防爆缓冲腔214的空间大小不受电容主体10的影响，均匀排布的四个限位凸起可以使得电容主体10的尾部11均匀受力，安装时避免受力不均影响到电容主体10的结构以及安装的位置。In this embodiment, there are four limiting bosses 213, which are evenly distributed on the side wall of the closed end 212. In addition, the distance between the two opposing limiting bosses 213 is the first size, and the diameter of the tail 11 of the capacitor body 10 is the second size. The first size is smaller than the second size, which prevents the capacitor body 10 from getting stuck in the two limiting projections. Between the platforms 213, the space size of the explosion-proof buffer cavity 214 is not affected by the capacitor main body 10. The evenly arranged four limit protrusions can make the tail 11 of the capacitor main body 10 evenly stressed, so as to avoid the lack of force during installation. All affect the structure of the capacitor body 10 and the installation position.
所述外壳体21及限位凸台213由金属片一体冲压成型，采用金属片冲压制成可以有效的缩小防爆壳20的体积以及厚度，对于安装空间相对较少的时候可以采用金属材质的防爆壳20；而所述外壳体21及限位凸台213还可以采用一体注塑成型，采用注塑成型在加工的成本会稍低，而且塑料材质可以有效的防止腐蚀。The outer shell 21 and the limiting boss 213 are integrally stamped and formed of sheet metal. The stamping of sheet metal can effectively reduce the volume and thickness of the explosion-proof shell 20. For the case where the installation space is relatively small, metal material can be used for explosion-proof Shell 20; and the outer shell 21 and the limiting boss 213 can also be integrally molded by injection molding. The cost of injection molding is slightly lower in processing, and the plastic material can effectively prevent corrosion.
如图1所示，防爆电解电容的安装结构，包括安装体及防爆电解电容，电容主体10及防爆壳20分别固定于所述安装体上。在本实施例中，所述安装体为电路板，将电容主体10和防爆壳20分别固定在电路板上实现安装，各自不干扰安装。As shown in FIG. 1, the installation structure of the explosion-proof electrolytic capacitor includes a mounting body and an explosion-proof electrolytic capacitor. The capacitor body 10 and the explosion-proof shell 20 are respectively fixed on the mounting body. In this embodiment, the mounting body is a circuit board, and the capacitor main body 10 and the explosion-proof housing 20 are respectively fixed on the circuit board for installation, and each does not interfere with the installation.
如图1、图5以及图6所示，所述电容主体10具有第一连接件12，所述防爆壳20具有第二连接件23，所述电容主体10通过第一连接件12固定于所述安装体上，所述防爆壳20通过第二连接件23固定于所述安装体上。具体地，电容主体10通过第一连接件12固定在安装体上，实现固定；而防爆壳20通过第二连接件23固定在安装体上，实现固定，第一连接件12和第二连接件23之间不干扰，不会因为第一连接件12的位置安装存在误差导致误差积累使得第二连接件23的安装位置受影响，所以固定效果上相对较佳。As shown in Figure 1, Figure 5 and Figure 6, the capacitor body 10 has a first connector 12, the explosion-proof housing 20 has a second connector 23, and the capacitor body 10 is fixed to the capacitor body 10 through the first connector 12 On the mounting body, the explosion-proof shell 20 is fixed to the mounting body through a second connecting piece 23. Specifically, the capacitor body 10 is fixed to the mounting body through the first connecting piece 12 to achieve fixation; while the explosion-proof housing 20 is fixed to the mounting body through the second connecting piece 23 to achieve fixation, the first connecting piece 12 and the second connecting piece There is no interference between 23, and the installation position of the second connecting member 23 will not be affected by the accumulation of errors due to the installation error of the first connecting member 12, so the fixing effect is relatively better.
如图5和图6所示，具体地，所述第二连接件23为卡脚231。卡脚231安装时需要的安装位置相对较小，所以开设在安装体上的安装位置较小，节省了安装的空间。As shown in FIGS. 5 and 6, specifically, the second connecting member 23 is a pin 231. The mounting position required for the clip 231 during installation is relatively small, so the mounting position provided on the mounting body is relatively small, which saves installation space.
所述卡脚231为两个，两个卡脚231相对设置。两个卡脚231的设置安装相对稳定。具体地如图6所示，所述卡脚231的端部设有卡钩2311，卡钩2311的设置形成倒扣，将卡脚231卡进安装体后卡钩2311卡进安装体，所以防爆壳20的安装相对稳定。There are two clamping legs 231, and the two clamping legs 231 are arranged oppositely. The installation and installation of the two clips 231 are relatively stable. Specifically, as shown in Figure 6, the end of the clip 231 is provided with a hook 2311, the hook 2311 is arranged to form an undercut, the clip 231 is clamped into the mounting body, and the hook 2311 is clamped into the mounting body, so the explosion-proof The installation of the shell 20 is relatively stable.
实施例二：Embodiment two:
本实施例与实施例一的区别在于：The difference between this embodiment and the first embodiment is:
如图7和图8所示，所述泄压通道22为设于所述外壳体21侧壁的通槽222。将需要***的气体通过通槽222排出，电容主体10***的气体首先在防爆缓冲腔内缓冲减压，然后再通过通槽222排出外部，由于在侧壁设置的通槽222相对于所述外壳体21的主体部分向外凸出，所以间接增加了防爆缓冲腔214的体积，因此在缓冲效果上起到一定的增强作用。具体地，所述通槽222相对于所述外壳体21的主体部分向外凸出，所以可以不影响电容主体10套设在防爆壳20上。As shown in FIGS. 7 and 8, the pressure relief channel 22 is a through groove 222 provided in the side wall of the outer shell 21. The gas that needs to be discharged is discharged through the through groove 222. The gas discharged from the capacitor body 10 is first buffered and reduced in the explosion-proof buffer chamber, and then discharged to the outside through the through groove 222, because the through groove 222 provided on the side wall is opposite to the housing The main body part of the body 21 protrudes outwards, so the volume of the explosion-proof buffer cavity 214 is indirectly increased, and therefore, the buffer effect is enhanced to a certain extent. Specifically, the through groove 222 protrudes outward with respect to the main body part of the outer shell 21, so that it does not affect the sleeve of the capacitor main body 10 on the explosion-proof casing 20.
实施例三：Example three:
本实施例与实施例一的区别在于：The difference between this embodiment and the first embodiment is:
如图9和图10所示，所述第二连接件23为防爆固定座。防爆固定座作为一个整体固定在安装体上，相比于卡脚231的方式，具有强度高的优点。As shown in Figs. 9 and 10, the second connecting member 23 is an explosion-proof fixing seat. The explosion-proof fixing seat is fixed on the mounting body as a whole, and has the advantage of high strength compared with the way of the clamping feet 231.
以上仅为本申请的具体实施例，并不以此限定本申请的保护范围；在不违反本申请构思的基础上所作的任何替换与改进，均属本申请的保护范围。The above are only specific embodiments of this application, and do not limit the scope of protection of this application; any substitutions and improvements made on the basis of not violating the concept of this application belong to the scope of protection of this application.

Claims (16)

  1. 防爆电解电容，其中，包括电容主体及防爆壳，电容主体具有尾部，防爆壳包括外壳体，外壳体上具有开口端及封闭端，至少在外壳体的封闭端的内部设置有防爆缓冲腔，所述开口端具有贯通口，贯通口与防爆缓冲腔相通，电容主体的尾部与外壳体的开口端相接。The explosion-proof electrolytic capacitor includes a capacitor main body and an explosion-proof shell. The capacitor main body has a tail. The explosion-proof shell includes an outer shell. The outer shell has an open end and a closed end. At least an explosion-proof buffer cavity is provided inside the closed end of the outer shell. The open end is provided with a through opening, the through opening is communicated with the explosion-proof buffer cavity, and the tail of the capacitor main body is connected with the open end of the outer casing.
  2. 如权利要求1所述防爆电解电容，其中，在所述外壳体上设有泄压通道。The explosion-proof electrolytic capacitor of claim 1, wherein a pressure relief channel is provided on the outer shell.
  3. 如权利要求2所述防爆电解电容，其中，所述泄压通道为至少两个。The explosion-proof electrolytic capacitor of claim 2, wherein there are at least two pressure relief channels.
  4. 如权利要求2所述防爆电解电容，其中，所述泄压通道为设于所述封闭端的端面的泄压孔。The explosion-proof electrolytic capacitor of claim 2, wherein the pressure relief channel is a pressure relief hole provided on the end surface of the closed end.
  5. 如权利要求2所述防爆电解电容，其中，所述泄压通道为设于所述封闭端侧壁的泄压孔。3. The explosion-proof electrolytic capacitor of claim 2, wherein the pressure relief passage is a pressure relief hole provided on the side wall of the closed end.
  6. 如权利要求2所述防爆电解电容，其中，所述泄压通道为设于所述外壳体侧壁的通槽。3. The explosion-proof electrolytic capacitor according to claim 2, wherein the pressure relief channel is a through slot provided on the side wall of the outer casing.
  7. 如权利要求6所述防爆电解电容，其中，所述通槽相对于所述外壳体的主体部分凸出。8. The explosion-proof electrolytic capacitor according to claim 6, wherein the through groove protrudes relative to the main body of the outer casing.
  8. 如权利要求1至7中任一项所述防爆电解电容，其中，所述封闭端内部设有限位凸台，在封闭端内、限位凸台靠中心位置形成所述防爆缓冲腔，电容主体的尾部***外壳体的开口端并被限位凸台纵向限位。The explosion-proof electrolytic capacitor according to any one of claims 1 to 7, wherein a limiting boss is provided inside the closed end, and the explosion-proof buffer cavity is formed in the closed end and the limiting boss is close to the center, and the capacitor body The tail is inserted into the open end of the outer shell and is longitudinally limited by the limiting boss.
  9. 如权利要求8所述防爆电解电容，其中，所述限位凸台为至少两个，该至少两个所述限位凸台沿所述封闭端的侧壁设置，所述防爆缓冲腔至少部分位于限位凸台之间的区域。8. The explosion-proof electrolytic capacitor of claim 8, wherein there are at least two limiting bosses, the at least two limiting bosses are arranged along the side wall of the closed end, and the explosion-proof buffer cavity is at least partially located The area between the limit bosses.
  10. 如权利要求9所述防爆电解电容，其中，所述限位凸台为四个，均布于所述封闭端的侧壁设置。9. The explosion-proof electrolytic capacitor of claim 9, wherein there are four limiting bosses, which are evenly distributed on the side wall of the closed end.
  11. 防爆电解电容安装结构，其中，包括安装体及前述权利要求1至10任一项所述防爆电解电容，电容主体及防爆壳分别固定于所述安装体上。The explosion-proof electrolytic capacitor mounting structure includes a mounting body and the explosion-proof electrolytic capacitor according to any one of the preceding claims 1 to 10, and the capacitor main body and the explosion-proof shell are respectively fixed on the mounting body.
  12. 如权利要求11所述防爆电解电容安装结构，其中，所述电容主体具有第一连接件，所述防爆壳具有第二连接件，所述电容主体通过第一连接件固定于所述安装体上，所述防爆壳通过第二连接件固定于所述安装体上。The explosion-proof electrolytic capacitor mounting structure according to claim 11, wherein the capacitor main body has a first connecting piece, the explosion-proof shell has a second connecting piece, and the capacitor main body is fixed to the mounting body through the first connecting piece , The explosion-proof shell is fixed on the mounting body through a second connecting piece.
  13. 如权利要求12所述防爆电解电容安装结构，其中，所述第二连接件为防爆固定座。The explosion-proof electrolytic capacitor mounting structure of claim 12, wherein the second connecting member is an explosion-proof fixing seat.
  14. 如权利要求12所述防爆电解电容安装结构，其中，所述第二连接件为卡脚。The explosion-proof electrolytic capacitor mounting structure of claim 12, wherein the second connecting member is a pin.
  15. 如权利要求14所述防爆电解电容安装结构，其中，所述卡脚为两个，两个卡脚相对设置。The explosion-proof electrolytic capacitor mounting structure according to claim 14, wherein there are two clamping pins, and the two clamping pins are arranged oppositely.
  16. 如权利要求14所述防爆电解电容安装结构，其中，所述卡脚的端部设有卡钩。The explosion-proof electrolytic capacitor mounting structure of claim 14, wherein the end of the clip is provided with a hook.
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CN210182241U (en) * 2019-08-02 2020-03-24 广州视琨电子科技有限公司 Explosion-proof electrolytic capacitor and mounting structure thereof

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