CN210110537U - Explosion-proof capacitor - Google Patents
Explosion-proof capacitor Download PDFInfo
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- CN210110537U CN210110537U CN201920901324.0U CN201920901324U CN210110537U CN 210110537 U CN210110537 U CN 210110537U CN 201920901324 U CN201920901324 U CN 201920901324U CN 210110537 U CN210110537 U CN 210110537U
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Abstract
An explosion-proof capacitor comprises a capacitor, an anti-leakage cap and a supporting clamp. The capacitor comprises a shell and pins, wherein the pins are arranged on the shell, an explosion-proof surface is arranged on one side of the shell, which is far away from the pins, and an explosion-proof groove is formed in the explosion-proof surface; the anti-leakage cap comprises a stopping part and a protecting part, wherein the stopping part is provided with a mounting hole, the protecting part is provided with a liquid storage cavity, the mounting hole is communicated with the liquid storage cavity, the stopping part is sleeved on the shell, the outer wall of the shell is tightly attached to the wall of the mounting hole, and the anti-explosion surface is positioned in the liquid storage cavity; the supporting clip is arranged on the circuit board and is used for being buckled with the anti-leakage cap. The anti-leakage cap forms a double anti-explosion structure on the capacitor, and the safety performance of the capacitor is improved. The anti-leakage cap sleeve is used for blocking substances such as electrolyte leaked from the capacitor, the leaked substances are prevented from directly falling into the circuit board and peripheral components of the capacitor, the anti-leakage cap forms a secondary anti-explosion structure on the capacitor, and the anti-leakage cap and the anti-explosion surface of the capacitor are matched to form a double anti-explosion structure, so that the explosion risk of the capacitor is further reduced.
Description
Technical Field
The utility model relates to an electrolytic capacitor, in particular to an explosion-proof capacitor.
Background
Electrolytic capacitor reachs life, trouble or impressed voltage when too big, produce great electric current, make the inside temperature of electrolytic capacitor rise, and then arouse that the inside electrolyte of electrolytic capacitor evaporates or take place chemical reaction and produce gas, impel the increase of electrolytic capacitor internal pressure, intensity when its pressure exceedes the shell then can arouse the explosion, for avoiding explosion initiation accident, can set up explosion-proof groove or set up pressure relief structure such as explosion-proof valve on the roof of condenser usually, this roof is explosion-proof face promptly.
Therefore, when the electrolytic capacitor is abnormal, if the internal pressure intensity of the electrolytic capacitor is increased, the explosion-proof valve is promoted to be opened, high-pressure gas is sprayed out from the explosion-proof valve, or the explosion-proof surface is cracked to achieve the purpose of pressure relief, so that the explosion caused by the overlarge internal pressure intensity of the electrolytic capacitor is avoided.
However, in the process of pressure relief by cracking the explosion-proof surface or opening the explosion-proof valve, the high-pressure gas carries the electrolyte to be sprayed out together, and the electrolyte is attached to the circuit board and other electronic elements to cause faults such as electric leakage, short circuit and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, providing one kind and having explosion-proof structure to can prevent the explosion-proof condenser that electrolyte leaked, form dual explosion-proof structure on the condenser, improve the security performance of condenser.
The purpose of the utility model is realized through the following technical scheme:
an explosion-proof capacitor comprising: the capacitor, the anti-leakage cap and the supporting clamp;
the capacitor comprises a shell and pins, the pins are arranged on the shell, an explosion-proof surface is arranged on one side of the shell, which is far away from the pins, and an explosion-proof groove is formed in the explosion-proof surface;
the anti-leakage cap comprises a stopping part and a protecting part, wherein a mounting hole is formed in the stopping part, a liquid storage cavity is formed in the protecting part, the mounting hole is communicated with the liquid storage cavity, the stopping part is sleeved on the shell, the outer wall of the shell is tightly attached to the wall of the mounting hole, and the anti-explosion surface is located in the liquid storage cavity;
the supporting clip is arranged on the circuit board and used for being buckled with the anti-leakage cap.
In one embodiment, the anti-leakage cap is provided with at least one pressure-relief hole.
In one embodiment, the pressure relief hole is located on an end face of the leakage-proof cap away from the capacitor.
In one embodiment, the anti-leakage cap is provided with at least one air hole, and the diameter of the air hole is smaller than that of the pressure-releasing hole.
In one embodiment, the explosion-proof capacitor is used for being mounted on a circuit board, a avoiding groove is formed in the circuit board, and the supporting clamp is located in the avoiding groove.
In one embodiment, a plurality of protrusions are arranged on the outer wall of the supporting clamp, a clamping interface is defined between every two adjacent protrusions, and the clamping interface is used for being clamped with the circuit board.
In one embodiment, the supporting clip comprises a plurality of supporting brackets, the supporting brackets are mounted on the circuit board at intervals, and each supporting bracket is connected with the outer wall of the leakage-proof cap.
In one embodiment, the bearing support comprises an arc-shaped piece and two supporting legs, the two supporting legs are respectively arranged at two ends of the arc-shaped piece, and the two supporting legs are embedded on the circuit board.
In one embodiment, an external thread is provided on an outer wall of the capacitor, and the leakage-proof cap is screwed with the capacitor through the external thread.
In one embodiment, the anti-leakage device further comprises a cover member which is sleeved on the anti-leakage cap.
Compared with the prior art, the utility model discloses at least, following advantage has:
1. the capacitor is provided with an explosion-proof surface, the structural strength of the position of the explosion-proof surface is weaker, and when the internal pressure intensity of the capacitor is too high, the explosion-proof surface is firstly burst, so that directional pressure relief is realized, and the explosion of the capacitor is prevented.
2. The leakage-proof cap sleeve is arranged on the capacitor and used for blocking substances such as gas or electrolyte leaked from the inside of the capacitor, and the leaked substances are prevented from directly falling onto the circuit board and peripheral components of the capacitor to protect the circuit board.
3. The supporting clamp provides supporting force for the anti-leakage cap, a secondary explosion-proof structure is formed on the capacitor, and the secondary explosion-proof structure is matched with an explosion-proof surface of the capacitor to form a double explosion-proof structure, so that the explosion risk of the capacitor is further reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an explosion-proof capacitor according to an embodiment of the present invention;
FIG. 2 is an exploded view of the explosion-proof capacitor shown in FIG. 1;
fig. 3 is a schematic structural view of an anti-leakage cap according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a supporting clip according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment, an explosion-proof capacitor includes: the capacitor, the anti-leakage cap and the supporting clamp; the capacitor comprises a shell and pins, wherein the pins are arranged on the shell, an explosion-proof surface is arranged on one side of the shell, which is far away from the pins, and an explosion-proof groove is formed in the explosion-proof surface; the anti-leakage cap comprises a stopping part and a protecting part, wherein the stopping part is provided with a mounting hole, the protecting part is provided with a liquid storage cavity, the mounting hole is communicated with the liquid storage cavity, the stopping part is sleeved on the shell, the outer wall of the shell is tightly attached to the wall of the mounting hole, and the anti-explosion surface is positioned in the liquid storage cavity; the supporting clip is arranged on the circuit board and is used for being buckled with the anti-leakage cap.
The explosion-proof capacitor is better explained to better understand the concept of the explosion-proof capacitor. Referring to fig. 2, an explosion-proof capacitor 10 includes: a capacitor 100, a leakage prevention cap 200, and a support clip 300; the capacitor 100 is provided with the explosion-proof groove 111a, when the pressure inside the capacitor 100 is too high, the position of the explosion-proof groove 111a can be firstly cracked, the voltage of the capacitor 100 is released, the secondary protection is performed on the capacitor 100 by the explosion-proof cap 200 covered on the capacitor 100, gas sprayed from the position of the explosion-proof groove 111a is prevented from impacting a circuit board or circuit elements around the capacitor 100, electrolyte brought out by the gas can be blocked, short circuit and other adverse effects caused by the fact that the electrolyte brought out by the gas adheres to the circuit board or the circuit elements around the capacitor 100 in the voltage release process are avoided, and the safety performance of the capacitor is further improved.
Referring to fig. 1 and 2, the capacitor 100 includes a housing 110 and a pin 120, the pin 120 is disposed on the housing 110, the pin 120 is soldered on the circuit board 20, the housing 110 is provided with an explosion-proof surface 111 on a side away from the pin 120, the explosion-proof surface is provided with an explosion-proof groove 111a, by forming the explosion-proof groove 111a in the explosion-proof surface 111, the structural strength of the position of the explosion-proof surface 111 is made smaller than that of the other portions of the housing 110, and therefore, when the capacitor 100 malfunctions, causing abnormal heat generation, causing abnormal pressure rise inside the case 110, the position where the explosion occurs first is the explosion-proof surface 111, the structural strength at the explosion-proof surface 111 is intentionally reduced to control the explosion position of the capacitor 110, and, by weakening the structural strength of the explosion-proof face 111, the strength of the capacitor 100 at the time of explosion is reduced, further, the probability that the circuit board and circuit components around the capacitor 100 are damaged by the explosion caused when the capacitor 100 is abnormal is reduced.
Referring to fig. 2 and 3, the anti-leakage cap 200 includes a stopping portion 210 and a protection portion 220, the stopping portion 210 is provided with a mounting hole 211, the protection portion 220 is provided with a liquid storage cavity 221, the mounting hole 211 is communicated with the liquid storage cavity 221, the stopping portion 210 is sleeved on the housing 110, the outer wall of the housing 110 is tightly attached to the wall of the mounting hole 211, the explosion-proof surface 111 is located in the liquid storage cavity 221, that is, the explosion-proof face 111 is disposed toward the reservoir chamber 221, and when the explosion-proof face 111 is crushed, the gas ejected from the housing 110 is directly charged into the reservoir chamber 221, at this time, the liquid storage chamber 221 is communicated with the housing 110, which corresponds to the increase of the internal volume of the capacitor 100, thereby reducing the pressure in the sealed space enclosed by the leakage preventing cap 200 and the capacitor 100 to prevent explosion, meanwhile, the electrolyte sprayed out of the explosion-proof surface 111 along with the gas is blocked by the leakage-proof cap 200, so that the electrolyte is prevented from directly entering the circuit board, and the problems of short circuit and the like caused by the adhesion of the electrolyte on the circuit board or circuit components around the capacitor 100 are prevented.
Referring to fig. 2 and 4, the supporting clip 300 is mounted on the circuit board 20, and the supporting clip 300 is used to be fastened with the leakage-proof cap 200, and the supporting clip 300 fixes the leakage-proof cap 200, so that the supporting clip 300 is connected with the capacitor 100, the leakage-proof cap 200 is prevented from falling off from the capacitor 100, and the structural stability of the explosion-proof capacitor 10 is ensured.
Referring to fig. 2 and 3, in order to make the leakage-proof cap 200 have a certain pressure-releasing capacity, at least one pressure-releasing hole 230 is formed on the leakage-proof cap 200, the pressure-releasing hole 230 is located on an end surface of the leakage-proof cap 200 away from the capacitor 100, specifically, the pressure-releasing hole 230 is located on the protection portion 220, at least one air hole is formed on the leakage-proof cap 200, and a diameter of the air hole is smaller than a diameter of the pressure-releasing hole 230. When the leakage-proof cap 200 is decompressed, the compressed air inside the leakage-proof cap overflows from the pressure release hole 230, and the vent hole is used for assisting the pressure release of the pressure release hole 230.
Referring to fig. 2, the anti-explosion capacitor 100 is configured to be mounted on a circuit board 20, the circuit board 20 is provided with a avoiding groove 21, and the supporting clip 300 is located in the avoiding groove 21.
Referring to fig. 2 and 4, a plurality of protrusions 310 are disposed on an outer wall of the supporting clip 300, a clamping interface 311 is defined between two adjacent protrusions 310, and the clamping interface 311 is used for clamping with the circuit board 20, that is, the two adjacent protrusions 310 respectively support against the front side and the back side of the circuit board 20.
In one embodiment, the supporting clip 300 includes a plurality of supporting brackets, the supporting brackets are mounted on the circuit board 20 at intervals, each supporting bracket is connected to the outer wall of the anti-leakage cap 200, the supporting bracket includes an arc-shaped piece and two supporting legs, the two supporting legs are respectively disposed at two ends of the arc-shaped piece, and the two supporting legs are both embedded on the circuit board 20.
In one embodiment, an external thread is disposed on an outer wall of the capacitor 100, and the leakage-proof cap 200 is screwed with the capacitor 100 through the external thread.
In one embodiment, the explosion vent further includes a cover member that is placed over the vent cap 200.
Compared with the prior art, the utility model discloses at least, following advantage has:
1. the capacitor 100 is provided with the explosion-proof surface 111, the structural strength of the position of the explosion-proof surface 111 is weak, and when the internal pressure of the capacitor 100 is too high, the explosion-proof surface 111 is firstly burst to realize directional pressure relief and prevent the capacitor 100 from exploding.
2. The leakage-proof cap 200 is disposed on the capacitor 100 to block the gas or electrolyte leaked from the capacitor 100, so as to prevent the leaked substances from directly falling onto the circuit board 20 and the peripheral components of the capacitor 100, thereby protecting the circuit board 20.
3. The supporting clip 300 provides a supporting force for the leakage-proof cap 200, and a secondary explosion-proof structure is formed on the capacitor 100, and a dual explosion-proof structure is formed by cooperation with the explosion-proof surface 111 of the capacitor 100, so that the explosion risk of the capacitor 100 is further reduced.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An explosion-proof capacitor is characterized by comprising
The capacitor comprises a shell and pins, the pins are arranged on the shell, an explosion-proof surface is arranged on one side of the shell, which is far away from the pins, and an explosion-proof groove is formed in the explosion-proof surface;
the anti-leakage cap comprises a stopping part and a protecting part, a mounting hole is formed in the stopping part, a liquid storage cavity is formed in the protecting part, the mounting hole is communicated with the liquid storage cavity, the stopping part is sleeved on the shell, the outer wall of the shell is tightly attached to the hole wall of the mounting hole, and the anti-leakage surface is located in the liquid storage cavity;
the supporting clamp is arranged on the circuit board and used for being buckled with the anti-leakage cap.
2. The explosion-proof capacitor of claim 1 wherein said leakage-proof cap defines at least one leakage hole.
3. An explosion-proof capacitor as claimed in claim 2, wherein said pressure relief hole is located on an end face of said pressure relief cap remote from said capacitor.
4. The explosion-proof capacitor as claimed in claim 2, wherein said anti-leakage cap is formed with at least one air hole, and the diameter of said air hole is smaller than the diameter of said pressure-releasing hole.
5. The explosion-proof capacitor as claimed in claim 1, wherein the explosion-proof capacitor is used for being mounted on a circuit board, a avoiding groove is formed on the circuit board, and the supporting clip is located in the avoiding groove.
6. The explosion-proof capacitor as claimed in claim 5, wherein a plurality of protrusions are disposed on the outer wall of the supporting clip, a clamping interface is defined between two adjacent protrusions, and the clamping interface is used for clamping with the circuit board.
7. The explosion-proof capacitor of claim 5 wherein said support clip comprises a plurality of support brackets, a plurality of said support brackets being mounted on said circuit board at intervals, and each of said support brackets being connected to an outer wall of said leakage-proof cap.
8. The explosion-proof capacitor of claim 7, wherein the bearing bracket comprises an arc-shaped piece and two supporting legs, the two supporting legs are respectively arranged at two ends of the arc-shaped piece, and the two supporting legs are both embedded on the circuit board.
9. An explosion-proof capacitor as set forth in claim 1 wherein an external thread is provided on the outer wall of the capacitor, and the leakage-proof cap is screwed with the capacitor through the external thread.
10. An explosion proof capacitor as set forth in claim 1 further comprising a cover member that is nested over said leakage proof cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920901324.0U CN210110537U (en) | 2019-06-14 | 2019-06-14 | Explosion-proof capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920901324.0U CN210110537U (en) | 2019-06-14 | 2019-06-14 | Explosion-proof capacitor |
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| Publication Number | Publication Date |
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| CN210110537U true CN210110537U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920901324.0U Active CN210110537U (en) | 2019-06-14 | 2019-06-14 | Explosion-proof capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265217A (en) * | 2019-06-14 | 2019-09-20 | 惠州三华工业有限公司 | Noinductive capacitor |
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2019
- 2019-06-14 CN CN201920901324.0U patent/CN210110537U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265217A (en) * | 2019-06-14 | 2019-09-20 | 惠州三华工业有限公司 | Noinductive capacitor |
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