Ox horn capacitor capable of adapting to strong ultraviolet irradiation of UV furnace

Abstract

The utility model discloses an ox horn capacitor capable of adapting to strong ultraviolet irradiation of a UV furnace. The ox horn capacitor comprises a core bag, a side explosion-proof valve, a sleeve, electrolyte, a cover plate, a sealing ring, a weld leg, a lead, an electrolytic paper layer, an anode aluminum foil layer, a cathode aluminum foil layer, an aluminum shell and a gasket. Heat outside the capacitor is transmitted inwards, the temperature of the outer surface is reduced, a traditional aluminum shell bottom anti-explosion valve is changed into a side face anti-explosion valve, it is guaranteed that the bottom of the aluminum shell is flat and makes close contact with the gasket, and when the gasket is irradiated by strong ultraviolet rays to generate heat, the heat can be conducted to the aluminum shell with the large heat capacity. After the aluminum shell absorbs heat from the gasket, the heat capacity and the heat dissipating capacity of the aluminum shell are not enough to restrain the temperature rise within a bearable range, and at the moment, the heat on the aluminum shell is fully absorbed by utilizing the characteristics of large volume and large heat capacity of the internal core cladding.

Description

Technical Field

[0001] This utility model specifically relates to a horn-shaped capacitor that can withstand strong ultraviolet radiation from a UV furnace, and is suitable for manufacturing industrial-grade aluminum electrolytic capacitors in the capacitor industry. Background Technology

[0002] UV adhesives are now widely used in the production of electronic products due to their strong adhesion and durability. When using UV adhesives on circuit boards, a UV oven is required. The high-intensity ultraviolet light in the UV oven allows the adhesive to cure quickly. However, when this high-intensity ultraviolet light shines on aluminum electrolytic capacitors mounted on the circuit board, it generates high heat, causing the PVC or PP sleeves and gaskets to melt, directly affecting the performance of the aluminum electrolytic capacitors.

[0003] Currently, sleeves and gaskets are mostly black and brown, and the materials are primarily PVC, PET, and PP. These materials do not reflect ultraviolet light strongly, so it is difficult to reduce the heat absorbed per unit area. Our approach is to dissipate the heat absorbed by the sleeves and gaskets promptly to prevent their surface temperature from continuously rising. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the shortcomings of the prior art, this utility model provides a horn capacitor that can adapt to the strong ultraviolet radiation of a UV furnace, allowing aluminum electrolytic capacitors to withstand the high temperature generated by the radiation of high-intensity ultraviolet rays in a UV furnace without the sleeve and gasket breaking or melting, thus meeting customer requirements.

[0005] Technical solution: A horn capacitor that can withstand strong ultraviolet radiation from a UV furnace, comprising: a core, a side explosion-proof valve, a sleeve, an electrolyte, a cover plate, a sealing ring, solder feet, leads, an electrolytic paper layer, a positive electrode aluminum foil layer, an electrolytic paper layer, a negative electrode aluminum foil layer, an electrolytic paper layer, an aluminum shell, and gaskets.

[0006] An aluminum shell is fixedly fitted inside the sleeve, a core package is fixedly installed inside the aluminum shell, an electrolyte is contained in the core package, a negative aluminum foil layer is provided at the bottom of the core package, a gasket is provided at the bottom of the aluminum shell, and a side explosion-proof valve is fixedly installed on the side of the sleeve.

[0007] A cover plate is fixedly installed on the top of the sleeve, the cover plate encapsulates the core package in an aluminum shell, a sealing ring is installed between the sleeve and the cover plate, two lead wires are provided below the cover plate, and welding feet are provided above the cover plate.

[0008] The capacitor core package includes a core package body formed by stacking and coaxially winding an electrolytic paper layer and an aluminum foil layer. The aluminum foil layer includes a positive electrode aluminum foil layer and a negative electrode aluminum foil layer. The electrolytic paper layer is disposed between the negative electrode aluminum foil layer and the positive electrode aluminum foil layer. The negative electrode foil of the core package extends outside the core package and is in direct contact with the aluminum shell.

[0009] As an optimization: the weld leg is bent in a bull horn shape.

[0010] As an optimization: a cathode conductive foil lead-out strip is drawn out on the negative electrode aluminum foil layer.

[0011] As an optimization: an anode conductive foil lead-out strip is drawn out on the positive electrode aluminum foil layer.

[0012] Beneficial effects: This invention transfers heat from the outside of the capacitor inward, reducing the temperature of the outer surface. It replaces the traditional bottom-mounted explosion-proof valve on the aluminum shell with a side-mounted valve, ensuring a flat bottom and tight contact with the gasket. When the gasket is exposed to strong ultraviolet radiation and generates heat, it can transfer the heat to the aluminum shell, which has a larger heat capacity. Even after the aluminum shell absorbs heat from the gasket, its heat capacity and heat dissipation are still insufficient to prevent the temperature rise from reaching a tolerable level. At this point, the large volume and high heat capacity of the internal core are utilized to fully absorb the heat from the aluminum shell.

[0013] This invention utilizes the characteristic that the negative electrode of an aluminum electrolytic capacitor is at the same potential as the aluminum shell. The negative electrode foil (aluminum) in the core package extends from one end and makes full contact with the aluminum shell. Good thermal conductivity is ensured through the connection of aluminum materials.

[0014] This invention solves the problem that high-intensity ultraviolet radiation on aluminum electrolytic capacitors on circuit boards generates high heat, causing the PVC or PP sleeves and gaskets to melt. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 2 This is a top view of the structure of this utility model. Detailed Implementation

[0017] Example

[0018] like Figure 1-2 As shown, a horn capacitor that can withstand strong ultraviolet radiation from a UV furnace includes: a core 1, a side explosion-proof valve 2, a sleeve 3, an electrolyte 4, a cover plate 5, a sealing ring 6, solder feet 7, leads 8, an electrolytic paper layer 9, a positive electrode aluminum foil layer 10, an electrolytic paper layer 11, a negative electrode aluminum foil layer 12, an electrolytic paper layer 13, an aluminum shell 14, and a gasket 15.

[0019] An aluminum shell 14 is fixedly fitted inside the sleeve 3. A core package 1 is fixedly installed inside the aluminum shell 14. The core package 1 contains electrolyte 4. A negative electrode aluminum foil layer 12 is provided at the bottom of the core package 1. A gasket 15 is provided at the bottom of the aluminum shell 14. A side explosion-proof valve 2 is fixedly installed on the side of the sleeve 3.

[0020] The top of the sleeve 3 is fixedly installed with a cover plate 5, which encapsulates the core package 1 in an aluminum shell 14. A sealing ring 6 is installed between the sleeve 3 and the cover plate 5. Two lead wires 8 are provided below the cover plate 5. A welding foot 7 is provided above the cover plate 5. The welding foot 7 is bent in the shape of a cow horn.

[0021] The capacitor core package 1 comprises a core package body formed by stacking and coaxially winding electrolytic paper layers 9, 11, and 13 and aluminum foil layers. The aluminum foil layers include a positive electrode aluminum foil layer 10 and a negative electrode aluminum foil layer 12; a cathode conductive foil lead-out strip is drawn from the negative electrode aluminum foil layer 12. An anode conductive foil lead-out strip is drawn from the positive electrode aluminum foil layer 10. The electrolytic paper layer 11 is disposed between the negative electrode aluminum foil layer 12 and the positive electrode aluminum foil layer 10. The negative electrode foil of the core package 1 extends outside the core package 1 and is in direct contact with the aluminum shell 14.

[0022] This utility model replaces the original explosion-proof valve at the bottom of the aluminum shell 14 with an explosion-proof valve 2 on the side of the aluminum shell, ensuring reliable contact between the gasket 15, the sleeve 3 and the bottom of the aluminum shell 14, and reliably transferring the heat absorbed by the gasket 15 and the sleeve 3 to the aluminum shell 14.

[0023] This invention extends the negative electrode foil 12 of the core package 1 to the outside of the core package and directly contacts the aluminum shell 14. The thermal conductivity of aluminum is far superior to that of the electrolytic paper 9 impregnated with electrolyte, so that the heat on the aluminum shell 14 is quickly transferred to the internal core package 1 with a large heat capacity.

[0024] This invention transfers heat from the outside of the capacitor inward, reducing the temperature of the outer surface. The traditional bottom-mounted explosion-proof valve on the aluminum shell is replaced with a side-mounted explosion-proof valve, ensuring a flat bottom for close contact with the gasket. When the gasket is exposed to strong ultraviolet radiation and generates heat, this heat is transferred to the aluminum shell, which has a larger heat capacity. Even after the aluminum shell absorbs heat from the gasket, its heat capacity and heat dissipation are still insufficient to prevent the temperature rise from reaching a tolerable level. At this point, the large volume and high heat capacity of the internal core are utilized to fully absorb the heat from the aluminum shell.

[0025] This invention utilizes the characteristic that the negative electrode of an aluminum electrolytic capacitor is at the same potential as the aluminum shell. The negative electrode foil (aluminum) in the core package extends from one end and makes full contact with the aluminum shell. Good thermal conductivity is ensured through the connection of aluminum materials.

[0026] This invention solves the problem that high-intensity ultraviolet radiation on aluminum electrolytic capacitors on circuit boards generates high heat, causing the PVC or PP sleeves and gaskets to melt.

[0027] The foregoing description clearly and completely illustrates the technical solutions in the embodiments of this utility model, enabling those skilled in the art to better understand the advantages and features of this utility model, thereby providing a clearer definition of the scope of protection of this utility model. The embodiments described in this utility model are merely some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

Claims

1. A horn-shaped capacitor that can withstand strong ultraviolet radiation from a UV furnace, characterized in that: include: Core package (1), side explosion-proof valve (2), sleeve (3), electrolyte (4), cover plate (5), sealing ring (6), welding foot (7), lead wire (8), electrolytic paper layer (9), positive electrode aluminum foil layer (10), electrolytic paper layer (11), negative electrode aluminum foil layer (12), electrolytic paper layer (13), aluminum shell (14) and gasket (15); An aluminum shell (14) is fixedly fitted inside the sleeve (3), a core package (1) is fixedly installed inside the aluminum shell (14), an electrolyte (4) is filled inside the core package (1), a negative electrode aluminum foil layer (12) is provided at the bottom of the core package (1), a gasket (15) is provided at the bottom of the aluminum shell (14), and a side explosion-proof valve (2) is fixedly installed on the side of the sleeve (3). The top of the sleeve (3) is fixedly installed with a cover plate (5), the cover plate (5) encapsulates the core package (1) in an aluminum shell (14), a sealing ring (6) is installed between the sleeve (3) and the cover plate (5), two lead wires (8) are provided below the cover plate (5), and a welding foot (7) is provided above the cover plate (5). The capacitor core package (1) includes a core package body formed by stacking and coaxially winding electrolytic paper layers (9, 11, 13) and aluminum foil layers. The aluminum foil layers include a positive aluminum foil layer (10) and a negative aluminum foil layer (12). The electrolytic paper layer (11) is disposed between the negative aluminum foil layer (12) and the positive aluminum foil layer (10). The negative foil of the core package (1) extends outside the core package (1) and is in direct contact with the aluminum shell (14).

2. The horn capacitor adaptable to strong ultraviolet radiation from a UV furnace according to claim 1, characterized in that: The weld foot (7) is bent in the shape of a cow horn.

3. The horn capacitor adaptable to strong ultraviolet radiation from a UV furnace according to claim 1, characterized in that: A cathode conductive foil lead-out strip is drawn out from the negative electrode aluminum foil layer (12).

4. The horn capacitor adaptable to strong ultraviolet radiation from a UV furnace according to claim 1, characterized in that: An anode lead-out strip is drawn out from the positive electrode aluminum foil layer (10).

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