CN215731344U - Withstand voltage prevents short circuit aluminum electrolytic capacitor - Google Patents
Withstand voltage prevents short circuit aluminum electrolytic capacitor Download PDFInfo
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- CN215731344U CN215731344U CN202121636729.XU CN202121636729U CN215731344U CN 215731344 U CN215731344 U CN 215731344U CN 202121636729 U CN202121636729 U CN 202121636729U CN 215731344 U CN215731344 U CN 215731344U
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Abstract
The utility model relates to a voltage-resistant short-circuit-proof aluminum electrolytic capacitor, which solves the problem that the interior of the existing aluminum electrolytic capacitor is easy to be short-circuited. The aluminum electrolytic cell comprises an aluminum shell, colloidal particles and a core arranged in the aluminum shell, wherein the core is sealed in the aluminum shell through the colloidal particles and is formed by winding a positive guide pin, a negative guide pin, a positive foil and a negative foil which are respectively connected with the positive guide pin and the negative guide pin, and electrolytic paper; the center of core be equipped with by negative foil and electrolytic paper winding core together, roll up the height that highly is higher than positive foil of core to can put at the central point of core and form firm roll core structure, when condenser internal pressure is unusual, roll up the core position and receive external force impact, still be difficult for making roll up the core and warp and lead to just, the negative pole dislocation, can stop to roll up that the core position is just, the negative pole has the hidden danger that the contact short circuit struck sparks.
Description
Technical Field
The utility model relates to the field of electronic devices, in particular to a voltage-resistant short-circuit-proof aluminum electrolytic capacitor.
Background
As an electronic component, the aluminum electrolytic capacitor has been widely used in the fields of consumer electronics, communication products, computers and peripheral products, new energy, automation control, automobile industry, photoelectric products, high-speed railways, aviation, military equipment, and the like. When the aluminum electrolytic capacitor is used, the internal pressure of the capacitor is abnormal due to the use or the self-reason, and the ignition abnormality may occur to cause the valve opening problem. If the short circuit of the positive electrode and the negative electrode occurs inside the capacitor, the ignition of the capacitor is easy to cause the potential safety hazard of ignition and combustion.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the interior of the existing aluminum electrolytic capacitor is easy to be short-circuited.
The technical scheme adopted for solving the technical problems provided by the utility model is as follows: the pressure-resistant short-circuit-proof aluminum electrolytic capacitor comprises an aluminum shell, colloidal particles and a core arranged in the aluminum shell, wherein the core is sealed in the aluminum shell through the colloidal particles and is formed by a positive guide pin, a negative guide pin, a positive foil and a negative foil which are respectively connected with the positive guide pin and the negative guide pin, and electrolytic paper in a winding manner; the center of the core is provided with a roll core formed by winding a negative foil and an electrolytic paper together, and the height of the roll core is higher than that of the positive foil.
The technical scheme for further limiting the utility model comprises the following steps:
the bottom of the aluminum shell is provided with a cross-shaped concave point explosion-proof valve.
The wall thickness explosion-proof line thickness t1=0.05-0.12mm of the point explosion-proof valve.
The negative foil is a high-purity aluminum-containing negative foil with the purity of more than 99.8 percent and the direct current resistance to 3VF voltage.
The guide pin is a high-purity guide pin which contains aluminum, has the purity of more than 99.93 percent and can resist direct current 600V voltage.
The winding core is pre-wound by 3 to 5 circles together with the electrolytic paper roll through the negative foil.
Through the technical scheme, the utility model has the beneficial effects that: the center of the core of the pressure-resistant short-circuit-proof aluminum electrolytic capacitor is provided with the winding core formed by winding the negative foil and the electrolytic paper together, and the height of the winding core is higher than that of the positive foil, so that a firm winding core structure can be formed at the center of the core, when the internal pressure of the capacitor is abnormal, the winding core is not easy to deform to cause the positive electrode and the negative electrode to be dislocated even if the winding core is impacted by external force, and the hidden danger of contact short-circuit ignition of the positive electrode and the negative electrode at the winding core position can be avoided.
Drawings
FIG. 1 is a schematic structural diagram of a voltage-withstanding short-circuit-proof aluminum electrolytic capacitor according to the present invention.
FIG. 2 is a schematic structural diagram of an explosion-proof valve of the pressure-resistant short-circuit-proof aluminum electrolytic capacitor of the present invention.
FIG. 3 is a schematic sectional view of an aluminum case of the pressure-resistant short-circuit-proof aluminum electrolytic capacitor of the present invention.
Detailed Description
The structure of the present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 3, the pressure-resistant short-circuit-proof aluminum electrolytic capacitor comprises an aluminum shell 1, colloidal particles 2 and a core 3 arranged in the aluminum shell, wherein the core is sealed in the aluminum shell through the colloidal particles and is formed by winding a positive guide pin 4, a negative guide pin 5, a positive foil 6 and a negative foil 7 which are respectively connected with the positive guide pin and the negative guide pin, and electrolytic paper 8; the center of the core is provided with a roll core 9 which is formed by winding a negative foil and an electrolytic paper together, and the height of the roll core is higher than that of the positive foil. In this embodiment, the roll core is pre-wound with the negative foil and the electrolytic paper roll for 3 to 5 turns. Therefore, a firm roll core structure can be formed at the central position of the core, even if the roll core position is impacted by external force when the internal pressure of the capacitor is abnormal, the roll core is still not easy to deform, and the positive and negative poles are dislocated, so that the hidden danger that the contact short circuit ignition exists in the positive and negative poles of the roll core position can be avoided.
In this embodiment, the negative foil is a high-purity negative foil that contains aluminum and has a purity of greater than 99.8% and is resistant to a direct current 3VF voltage, so that the electrical performance of the negative foil is more stable. The guide pin is a high-purity guide pin which contains aluminum, has the purity of more than 99.93 percent and can resist direct current 600V voltage.
In this embodiment, a cross-shaped concave point explosion-proof valve 10 is arranged at the bottom of the aluminum shell. The wall thickness explosion-proof line thickness t1=0.05-0.12mm of the point explosion-proof valve. The explosion-proof pressure range of the point explosion-proof aluminum shell with the point explosion-proof valve is narrower, and the outer wall is thinner. When the pressure in the shell is abnormal, the point explosion-proof aluminum shell can realize rapid pressure release, and the problem that the explosion-proof valve is opened too much due to impact force caused by excessive pressure accumulation is solved. In specific implementation, when the outer diameter D of the aluminum shell is =8.2 +/-0.05 mm, the inner diameter D1 is =7.78 +/-0.05 mm, the wall thickness T is =0.21 +/-0.03 mm, the bottom thickness T is =0.30 +/-0.1 mm, the central width F of the explosion-proof valve is less than or equal to 0.78mm, the width F1 of the explosion-proof valve is less than or equal to 0.45mm, and the thickness T1 of the explosion-proof line is less than or equal to 0.05mm-0+0.07, explosion-proof pressure P =35 + -3 Kg/cm2。
When the outer diameter phi D of the aluminum shell is =10.2 +/-0.05 mm, the inner diameter phi D1=9.74 +/-0.05 mm, the wall thickness T =0.23 +/-0.03 mm, the bottom thickness T =0.30 +/-0.1 mm, the central width F of the explosion-proof valve is less than or equal to 0.88mm, the width F1 of the explosion-proof valve is less than or equal to 0.48mm, and the thickness T1=0.05 of the explosion-proof line-0+0.07, explosion-proof pressure P =25 + -3 Kg/cm2。
Compared with the common aluminum shell, the explosion-proof pressure range of the point explosion-proof aluminum shell is narrower, and the outer wall is thinner. When the pressure in the shell is abnormal, the point explosion-proof aluminum shell can realize rapid pressure release, and the problem that the explosion-proof valve is opened too much due to impact force caused by excessive pressure accumulation is solved.
While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be construed as limiting the scope of the utility model. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the present invention as described in the appended claims.
Claims (6)
1. A pressure-resistant short-circuit-proof aluminum electrolytic capacitor comprises an aluminum shell, colloidal particles and a core arranged in the aluminum shell, wherein the core is sealed in the aluminum shell through the colloidal particles and is formed by a positive guide pin, a negative guide pin, a positive foil and a negative foil which are respectively connected with the positive guide pin and the negative guide pin, and electrolytic paper in a winding manner; the method is characterized in that: the center of the core is provided with a roll core formed by winding a negative foil and an electrolytic paper together, and the height of the roll core is higher than that of the positive foil.
2. The voltage-resistant short-circuit-proof aluminum electrolytic capacitor as claimed in claim 1, wherein: the bottom of the aluminum shell is provided with a cross-shaped concave point explosion-proof valve.
3. The voltage-resistant short-circuit-proof aluminum electrolytic capacitor as claimed in claim 2, wherein: the wall thickness explosion-proof line thickness t1=0.05-0.12mm of the point explosion-proof valve.
4. The voltage-resistant short-circuit-proof aluminum electrolytic capacitor as claimed in claim 1, wherein: the negative foil is a high-purity aluminum-containing negative foil with the purity of more than 99.8 percent and the direct current resistance to 3VF voltage.
5. The voltage-resistant short-circuit-proof aluminum electrolytic capacitor as claimed in claim 1, wherein: the guide pin is a high-purity guide pin which contains aluminum, has the purity of more than 99.93 percent and can resist direct current 600V voltage.
6. The voltage-resistant short-circuit-proof aluminum electrolytic capacitor as claimed in claim 1, wherein: the winding core is pre-wound by 3 to 5 circles together with the electrolytic paper roll through the negative foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121636729.XU CN215731344U (en) | 2021-07-19 | 2021-07-19 | Withstand voltage prevents short circuit aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121636729.XU CN215731344U (en) | 2021-07-19 | 2021-07-19 | Withstand voltage prevents short circuit aluminum electrolytic capacitor |
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| CN215731344U true CN215731344U (en) | 2022-02-01 |
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| CN202121636729.XU Active CN215731344U (en) | 2021-07-19 | 2021-07-19 | Withstand voltage prevents short circuit aluminum electrolytic capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114743799A (en) * | 2022-04-02 | 2022-07-12 | 珠海格力新元电子有限公司 | Aluminum electrolytic capacitor |
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2021
- 2021-07-19 CN CN202121636729.XU patent/CN215731344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114743799A (en) * | 2022-04-02 | 2022-07-12 | 珠海格力新元电子有限公司 | Aluminum electrolytic capacitor |
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