CN216698110U - High-temperature-resistant aluminum electrolytic capacitor - Google Patents
High-temperature-resistant aluminum electrolytic capacitor Download PDFInfo
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- CN216698110U CN216698110U CN202123101585.0U CN202123101585U CN216698110U CN 216698110 U CN216698110 U CN 216698110U CN 202123101585 U CN202123101585 U CN 202123101585U CN 216698110 U CN216698110 U CN 216698110U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/13—Energy storage using capacitors
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Abstract
The utility model relates to the technical field of electronic elements, in particular to a high-temperature-resistant aluminum electrolytic capacitor. The high-temperature-resistant aluminum electrolytic capacitor comprises a capacitor main body and a positioning assembly; the capacitor main body comprises an aluminum shell, a sealing rubber cover, a sleeve and a capacitor core, wherein the inner surface of the aluminum shell is coated with a heat absorption coating, and the outer surface of the aluminum shell is coated with a heat conduction coating; the capacitor core is internally provided with a positive lead, a negative lead and pins extending from the positive lead and the negative lead; the positioning assembly comprises a positioning strip and a clamping sleeve; the positioning strip is provided with an opening, the pin is arranged in the opening, and the clamping sleeve is used for fixing the position of the positioning strip. The utility model solves the problems that the existing aluminum electrolytic capacitor is not high temperature resistant and the pins are easy to scrap due to bending.
Description
Technical Field
The utility model relates to the technical field of electronic elements, in particular to a high-temperature-resistant aluminum electrolytic capacitor.
Background
The capacitor, commonly called a capacitor, is an energy storage element used in circuits for tuning, filtering, coupling, bypassing, energy conversion and delay, with the aluminum electrolytic capacitor being the most widely used and least expensive electrolytic capacitor.
The aluminum electrolytic capacitor in the prior art can not bear overhigh temperature, the temperature of the circuit board and the pins can not rise for a short time when the aluminum electrolytic capacitor works for a long time, the temperature of the periphery and the inside of the aluminum shell can be raised accordingly, and when the aluminum electrolytic capacitor works under the high-temperature environment, the capacitor core inside can be damaged in an accelerating mode.
Therefore, it is necessary to provide a technical solution to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-temperature-resistant aluminum electrolytic capacitor, and aims to solve the problems that the aluminum electrolytic capacitor in the prior art cannot bear overhigh temperature, the temperature of a circuit board and pins cannot rise for a short time during long-term work, the temperature of the periphery and the temperature inside an aluminum shell can rise accordingly, and when the capacitor works in a high-temperature environment, a capacitor core inside the capacitor can be damaged in an accelerated manner.
In order to achieve the above object, the present invention provides a high temperature resistant aluminum electrolytic capacitor, comprising a capacitor main body and a positioning assembly; wherein:
the capacitor main body comprises an aluminum shell, a sealing rubber cover, a sleeve and a capacitor core; the sealing rubber cover is connected to the opening of the aluminum shell in a sealing manner; the sleeve is coated on the outer sides of the aluminum shell and the sealing rubber cover; the capacitor core is arranged in the inner cavity of the aluminum shell and is formed by winding an anode foil, a cathode foil and an insulating paper; a positive lead and a negative lead are respectively arranged on the anode foil and the cathode foil, and pins penetrating through the sealing rubber cover and the sleeve are respectively arranged above the positive lead and the negative lead; the inner surface of the aluminum shell is coated with a heat absorption coating, and the outer surface of the aluminum shell is coated with a heat conduction coating;
the positioning assembly comprises a positioning strip and a clamping sleeve; the positioning strip comprises a cross strip and side strips integrally connected to two sides of the cross strip; the middle part of the transverse strip is provided with an opening corresponding to the pin, the transverse strip is arranged on the top wall of the capacitor main body, and the pin extends into the opening; the side strip is attached to the side wall of the capacitor main body, and a positioning lug is arranged at the side end of the side strip; the side end of the clamping sleeve is provided with a positioning slot corresponding to the positioning lug, the clamping sleeve is arranged at the bottom of the capacitor main body, and the positioning lug is clamped in the positioning slot.
More specifically, still be equipped with explosion-proof pad in the sleeve, explosion-proof pad is located the below of aluminium shell.
More specifically, the bottom of the capacitor main body is provided with a radiating fin, the radiating fin is an aluminum radiating fin, and the surface of the radiating fin is covered with radiating silicone grease; and a plurality of heat dissipation holes are formed in the bottom of the clamping sleeve.
More specifically, the top surface of the clamping sleeve is provided with the insertion slide way which is downwards opened to be communicated with the positioning slot.
More specifically, the areas of the anode foil and the cathode foil are equal, wherein the area of the insulating paper is larger than the areas of the anode foil and the cathode foil.
More specifically, the anode foil and the cathode foil are high-strength chemical aluminum foils, and the insulating paper is made of RA glass fiber materials.
More specifically, the pin on the positive electrode lead and the pin on the negative electrode lead are both cylindrical, and have the same height and diameter.
More specifically, the bottom of the clamping sleeve is provided with a clamping rod.
More specifically, the sleeve is a thermal shrinkage PVC insulation plastic sleeve.
More specifically, the top surface of horizontal bar is equipped with the insulating layer, the top surface of insulating layer is equipped with the glue film.
The utility model relates to a high-temperature resistant aluminum electrolytic capacitor, which has the technical effects that:
1. this application adopts the design of coating endothermic coating and heat conduction coating on aluminum hull, improves the heat dispersion of electric capacity core, avoids leading to inside temperature height because of long-term time work, makes the condition that electric capacity core damaged appear to this improves the life of this condenser, secondly, insulated paper adopts RA glass fiber material, even the inside temperature of electric capacity core rises insulated paper still can keep isolation characteristic, prevents to melt under the high temperature or the heat concentration condition and leads to the electric capacity short circuit.
2. This application makes the location strip fixed for the position of pressing from both sides the cover of getting through the cooperation of location slot and location lug, realizes the purpose of location pin promptly through the trompil, and the aluminium electrolytic capacitor main part of being convenient for carries out the installation of pegging graft with using the machine, makes the pin support to produce the phenomenon of bending and lead to scrapping of this aluminium electrolytic capacitor main part on the circuit board because of the position of pin is not alignd when preventing to install aluminium electrolytic capacitor main part.
Drawings
FIG. 1 is a schematic structural diagram of a high temperature resistant aluminum electrolytic capacitor according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of a high temperature resistant aluminum electrolytic capacitor according to the present invention;
fig. 3 is a schematic structural diagram of a positioning bar in a high temperature resistant aluminum electrolytic capacitor according to the present invention.
The labels in the figure are:
1-a capacitor body; 2-a positioning assembly;
101-an aluminum housing; 102, sealing a rubber cover; 103-a sleeve; 104-capacitor core; 105-anode foil; 106 — cathode foil; 107-insulating paper; 108 — positive lead; 109-negative lead; 110-pin; 111-a heat-absorbing coating; 112-a thermally conductive coating; 113-explosion-proof pad; 114-a heat sink;
201-positioning bar; 202-clamping and taking the sleeve; 203-horizontal bar; 204-side bar; 205-opening a hole; 206-positioning the bump; 207-positioning the slot; 208-clamping bar; 209 heat dissipation holes; 210 — inserting a slide;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" 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.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the embodiments of the present invention, it should be understood that the orientations and positional relationships indicated by the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are based on the orientations and positional relationships shown in the drawings and are only for convenience in describing the embodiments of the present invention and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In order to more clearly illustrate the technical solution of the present invention, a preferred embodiment is provided below, and specifically referring to fig. 1 to 3, a high temperature resistant aluminum electrolytic capacitor includes a capacitor body 1 and a positioning assembly 2; wherein:
the capacitor body 1 comprises an aluminum shell 101, a sealant cover 102, a sleeve 103 and a capacitor core 104; the sealing rubber cover 102 is connected to the opening of the aluminum casing 101 in a sealing manner; the sleeve 103 is coated outside the aluminum casing 101 and the sealing rubber cover 102; the capacitor core 104 is arranged in the inner cavity of the aluminum shell 101 and is formed by winding an anode foil 105, a cathode foil 106 and insulating paper 107; a positive lead 108 and a negative lead 109 are respectively arranged on the anode foil 105 and the cathode foil 106, and pins 110 penetrating through the sealing rubber cover 102 and the sleeve 103 are respectively arranged above the positive lead 108 and the negative lead 109; the inner surface of the aluminum case is coated with a heat absorbing coating 111, and the outer surface thereof is coated with a heat conductive coating 112;
in this embodiment, the sealant cap 102 is used to highly seal the aluminum case 101, and is used to prevent the electrolyte filled in the inner cavity of the aluminum case 101 from leaking out, and simultaneously isolate the outside, so as to prevent the heat generated by other electrical components from diffusing into the capacitor and affecting the normal operation of the capacitor.
Further, in this embodiment, the heat absorbing coating 111 has excellent heat absorption, when the capacitor works for a long time, the pin 110 may cause the temperature of the capacitor core 104 inside the capacitor to gradually rise, at this time, the heat absorbing coating 111 may absorb the heat generated by the capacitor core 104, and the heat absorbing coating 111 contacts with the outer wall of the aluminum case 101, so that the heat on the heat absorbing coating 111 may be rapidly conducted to the aluminum case 101, and then, under the action of the heat conducting coating 112, the heat generated by the aluminum case 101 may be rapidly dissipated outwards, thereby ensuring the temperature inside the capacitor core 104 to be constant.
It should be noted that, the heat absorbing coating 111 is made of, but not limited to, epoxy resin, and the epoxy resin material not only has excellent heat absorbing performance, but also has good insulating property, i.e., is not easy to interfere with the operation of the capacitor core 104 when being placed inside the aluminum casing 101, and is a preferred scheme; the heat conductive coating 112 is selected from, but not limited to, heat conductive silicone grease, which has excellent heat conductive performance and can ensure that heat on the aluminum case 101 is rapidly dissipated outwards. For specific applications, the materials of the heat-absorbing coating 111 and the heat-conducting coating 112 may be appropriately selected by those skilled in the art according to the well-known techniques.
The positioning assembly 2 comprises a positioning strip 201 and a clamping sleeve 202; the positioning strip 201 comprises a cross strip 203 and side strips 204 integrally connected to two sides of the cross strip 203; the middle part of the horizontal bar 203 is provided with an opening 205 corresponding to the pin 110, the horizontal bar 203 is arranged on the top wall of the capacitor body 1, and the pin 110 extends into the opening 205; the side strip 204 is attached to the side wall of the capacitor body 1, and a positioning bump 206 is arranged at the side end of the side strip; the side end of the clamping sleeve 202 is provided with a positioning slot 207 corresponding to the positioning bump 206, the clamping sleeve 202 is sleeved at the bottom of the capacitor body 1, and the positioning bump 206 is clamped in the positioning slot 207.
In this embodiment, the positioning pins 110 are realized by the cooperation of the positioning strip 201 and the clamping sleeve 202, so that the aluminum electrolytic capacitor body is prevented from being scrapped due to the bending phenomenon caused by the pins 110 abutting against the circuit board because the pins 110 are not aligned when the aluminum electrolytic capacitor body is mounted.
Further, in this embodiment, a supporting pillar extending outward is disposed at the transverse bar 203 of the positioning bar 201, the opening 205 is disposed in the middle of the supporting pillar, specifically, the supporting pillar may be a cylinder or a polygon prism, and the design meaning of the supporting pillar is that a reinforcing structure is formed outside the pin 110, so that the pin 110 is not easily bent or broken when being mounted on a circuit board.
Further, in this embodiment, there are two positioning bumps 206, and there are two positioning slots 207 corresponding to the positioning bumps 206; the bottom of the positioning bump 206 is arc-shaped or a tip-shaped formed by two crossed inclined surfaces, and the top surface thereof is a horizontal plane; the clamping sleeve 202 is provided with two insertion slideways 210 which are downwards opened from the top surface to be communicated with the positioning slots 207, the top of the clamping sleeve 202 is divided into two clamping pieces with certain expansibility by the two insertion slideways 210, and the top of the insertion slideways 210 is provided with arc-shaped or cuspid insertion holes matched with the positioning lugs 206; specifically, during installation, the bottom of the positioning protrusion 206 extends from the insertion opening, and under the insertion effect of the arc-shaped or pointed bottom, the two clips gradually expand outward until the positioning protrusion 206 is inserted into the positioning slot 207, the two clips recover to their original shapes, and the top surface of the positioning protrusion 206 is horizontal, that is, under the condition that no external force is generated to expand the two clips, the clamping sleeve 202 can maintain stable connection with the positioning strip 201, and thus can stably reinforce the pin 110. It should be noted that, the inner diameter of the clamping sleeve 202 is the same as the outer diameter of the capacitor body 1, a slot hole for inserting the side bar 204 is formed inside the clamping sleeve 202, specifically, when the clamping sleeve 202 is installed on the capacitor body 1, the inner wall of the clamping sleeve 202 contacts with the outer wall of the capacitor body 1, the side bar 204 is inserted along the slot hole until the positioning protrusion 206 is inserted into the positioning slot 207, so that the clamping sleeve 202 and the capacitor body 1 do not shake relatively, that is, the side bar 204 is not easy to shift, and the cross bar 203 can stably position the pin 110.
Further, in this embodiment, the top surface of the horizontal bar 203 is provided with an insulating layer, and the top surface of the insulating layer is provided with a glue layer. When the pins 110 are inserted into the conductive holes on the circuit board, the adhesive layer on the horizontal bar 203 is adhered to the circuit board, so that the connection stability of the capacitor and the circuit board is enhanced, wherein the insulating layer is used for preventing the horizontal bar 203 from interfering with the conductive welding points on the circuit board.
As a preferable aspect of the present embodiment, the areas of the anode foil 105 and the cathode foil 106 are equal in size, wherein the area of the insulating paper 107 is larger than the areas of the anode foil 105 and the cathode foil 106. The anode foil 105 and the cathode foil 106 are made of high-strength aluminum foil, and the insulating paper 107 is made of RA glass fiber material, so that even if the capacitor core 104 is affected by external high temperature or the heat dissipation efficiency of the capacitor core is insufficient, when the internal temperature of the capacitor core rises, the insulating paper 107 still can keep the isolation characteristic, the capacitor core is prevented from being melted under the condition of high temperature or heat concentration to cause short circuit of the capacitor, namely, under the high-temperature state, the capacitor core still can keep stable work.
As a preferable scheme of this embodiment, the pin 110 on the positive electrode lead 108 and the pin 110 on the negative electrode lead 109 are both cylindrical and have the same height and diameter. The pins 110 serve as the electrical connection bodies of the capacitor and the circuit board, and the two pins 110 adopt the design, so that the welding is convenient for workers, and the transmission performance is better.
As a preferable scheme of the embodiment, an explosion-proof pad 113 is further arranged in the sleeve 103, and the explosion-proof pad 113 is arranged below the aluminum casing 101; the explosion-proof pad 113 is made of a material with strong expansion resistance, and the outward expansion and explosion of the capacitor due to internal factors are effectively avoided under the matching action of the explosion-proof pad 113 and the sleeve 103, so that the potential safety hazard is reduced.
As a preferable scheme of the present embodiment, the bottom of the capacitor body 1 is provided with a heat sink 114, the heat sink 114 is made of aluminum material, and the surface thereof is covered with heat dissipation silicone grease; the bottom of the clamping sleeve 202 is provided with a plurality of heat dissipation holes 209. The heat dissipation silicone grease has excellent heat dissipation performance and insulation performance, and can quickly conduct heat generated by the capacitor to the heat dissipation sheet 114 while ensuring that the normal operation of the capacitor is not affected, and the heat dissipation sheet 114 can quickly exchange heat with an external space under the action of the bottom heat dissipation holes 209, so as to timely reduce the temperature of the capacitor main body 1. It should be noted that, because the circuit board will generate heat even in long-term operation, and the temperature of the side of the capacitor body 1 away from the circuit board is lower, the heat sink 114 is disposed at this position to better exchange heat with low-temperature air.
As a preferable scheme of this embodiment, the bottom of the clamping sleeve 202 is provided with a clamping rod 208, the clamping rod 208 is arranged to enable the high temperature resistant aluminum electrolytic capacitor to be fixed on a corresponding machine, and specifically, the clamping rod 208 and the equipment can be fixedly installed by welding, bonding, or screwing.
As a preferable solution of this embodiment, the sleeve 103 is a heat-shrinkable PVC plastic sheath. The thermal shrinkage PVC insulation plastic sleeve has the performance of thermal shrinkage, can be shrunk by heating at the temperature of more than 98 ℃, has excellent high temperature resistance and expansion resistance, and has good protection effect on a capacitor.
The high-temperature-resistant aluminum electrolytic capacitor solves the problems that the aluminum electrolytic capacitor in the prior art cannot bear overhigh temperature, the temperature of a circuit board and pins cannot rise for a short time in long-term work, the temperature of the periphery and the temperature inside an aluminum shell can rise accordingly, and an internal capacitor core can be damaged in an accelerated manner when the capacitor works in the high-temperature environment.
The above description is only exemplary of the present invention, and the structure is not limited to the above-mentioned shapes, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high temperature resistant aluminum electrolytic capacitor is characterized in that: comprises a capacitor main body and a positioning component; wherein:
the capacitor main body comprises an aluminum shell, a sealing rubber cover, a sleeve and a capacitor core; the sealing rubber cover is connected to the opening of the aluminum shell in a sealing manner; the sleeve is coated on the outer sides of the aluminum shell and the sealing rubber cover; the capacitor core is arranged in the inner cavity of the aluminum shell and is formed by winding an anode foil, a cathode foil and an insulating paper; a positive lead and a negative lead are respectively arranged on the anode foil and the cathode foil, and pins penetrating through the sealing rubber cover and the sleeve are respectively arranged above the positive lead and the negative lead; the inner surface of the aluminum shell is coated with a heat absorption coating, and the outer surface of the aluminum shell is coated with a heat conduction coating;
the positioning assembly comprises a positioning strip and a clamping sleeve; the positioning strip comprises a cross strip and side strips integrally connected to two sides of the cross strip; the middle part of the transverse strip is provided with an opening corresponding to the pin, the transverse strip is arranged on the top wall of the capacitor main body, and the pin extends into the opening; the side strip is attached to the side wall of the capacitor main body, and a positioning lug is arranged at the side end of the side strip; the side end of the clamping sleeve is provided with a positioning slot corresponding to the positioning lug, the clamping sleeve is arranged at the bottom of the capacitor main body, and the positioning lug is clamped in the positioning slot.
2. The high temperature resistant aluminum electrolytic capacitor of claim 1, wherein: still be equipped with explosion-proof pad in the sleeve, explosion-proof pad is located the below of aluminium shell.
3. The high temperature resistant aluminum electrolytic capacitor of claim 1, wherein: the bottom of the capacitor main body is provided with a radiating fin which is made of aluminum material, and the surface of the radiating fin is covered with radiating silicone grease; and a plurality of heat dissipation holes are formed in the bottom of the clamping sleeve.
4. The high temperature resistant aluminum electrolytic capacitor of claim 1, wherein: the top surface of the clamping sleeve is provided with the insertion slide way which is downwards opened to be communicated with the positioning slot.
5. The high temperature resistant aluminum electrolytic capacitor of claim 1, wherein: the areas of the anode foil and the cathode foil are equal, wherein the area of the insulating paper is larger than that of the anode foil and the cathode foil.
6. The high temperature resistant aluminum electrolytic capacitor of claim 5, wherein: the anode foil and the cathode foil are high-strength formed aluminum foils, and the insulating paper is made of RA glass fiber materials.
7. The high temperature resistant aluminum electrolytic capacitor of claim 1, wherein: the pin on the positive electrode lead and the pin on the negative electrode lead are both cylindrical and have equal height and diameter.
8. The high temperature resistant aluminum electrolytic capacitor of claim 1, wherein: the bottom of the clamping sleeve is provided with a clamping rod.
9. The high temperature resistant aluminum electrolytic capacitor of claim 1, wherein: the sleeve is a thermal shrinkage PVC insulation plastic sleeve.
10. The high temperature resistant aluminum electrolytic capacitor of claim 1, wherein: the top surface of horizontal bar is equipped with the insulating layer, the top surface of insulating layer is equipped with the glue film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123101585.0U CN216698110U (en) | 2021-12-06 | 2021-12-06 | High-temperature-resistant aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123101585.0U CN216698110U (en) | 2021-12-06 | 2021-12-06 | High-temperature-resistant aluminum electrolytic capacitor |
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| Publication Number | Publication Date |
|---|---|
| CN216698110U true CN216698110U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123101585.0U Active CN216698110U (en) | 2021-12-06 | 2021-12-06 | High-temperature-resistant aluminum electrolytic capacitor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472437A (en) * | 2022-10-07 | 2022-12-13 | 南通新联电子有限公司 | Quick-plugging capacitor aluminum shell |
| CN116130247A (en) * | 2022-12-20 | 2023-05-16 | 益阳市安源电子有限公司 | High-temperature-resistant aluminum electrolytic capacitor |
-
2021
- 2021-12-06 CN CN202123101585.0U patent/CN216698110U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115472437A (en) * | 2022-10-07 | 2022-12-13 | 南通新联电子有限公司 | Quick-plugging capacitor aluminum shell |
| CN115472437B (en) * | 2022-10-07 | 2023-10-03 | 南通新联电子有限公司 | Fast-plugging capacitor aluminum shell |
| CN116130247A (en) * | 2022-12-20 | 2023-05-16 | 益阳市安源电子有限公司 | High-temperature-resistant aluminum electrolytic capacitor |
| CN116130247B (en) * | 2022-12-20 | 2024-05-07 | 益阳市安源电子有限公司 | High-temperature-resistant aluminum electrolytic capacitor |
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