TWI753821B - Electrolytic capacitors with conductive bases - Google Patents

Abstract

An electrolytic capacitor with a conductive base includes a capacitor body and two conductive bases, the capacitor body includes a shell, a capacitor, two elastic sealing bodies and a plurality of pins, the shell is a hollow shell with two open ends, The capacitor is arranged in the housing, each of the elastic sealing bodies is arranged at each of the open ends, each of the pins has an inner end and an outer end, each of the inner ends is electrically connected to the capacitor, and each of the outer ends is connected to the The open end protrudes through each of the elastic sealing bodies, and each of the conductive bases is arranged on each of the open ends of the casing, and includes a connecting portion and a pin portion, the connecting portion has a first surface and a second surface, the The first surface is connected to the surfaces of the elastic sealing bodies, the pin portion is electrically connected to the second surface of the connection portion, and the pins disposed on the same open end are electrically connected to each other through the conductive bases.

Description

Electrolytic capacitors with conductive bases

An electrolytic capacitor, especially an electrolytic capacitor with a conductive base.

Electrolytic capacitors are one of the common electronic components in electronic circuit devices. They are widely used in various electronic products. They have various functions, such as storing electric energy, improving power factor, filtering and resonance.

In recent years, with the evolution of electronic product research and development technology, electronic products not only focus on the appearance of the product to be lighter and thinner, but also to improve product performance, electronic products are also developed in the direction of high frequency. However, conventional electrolytic capacitors are only provided with a single Positive pin and single negative pin, conventional electrolytic capacitors are difficult to further reduce impedance under such pin configuration, and cannot meet the performance requirements of current electronic products such as low impedance and high stability. In order to make electrolytic capacitors applicable In high-performance electronic products, electrolytic capacitors must be improved to enhance the performance of electrolytic capacitors.

In view of this, the present invention provides an electrolytic capacitor with a conductive base, which reduces the overall impedance and capacitive reactance of the electrolytic capacitor through the configuration of the pins, so as to achieve the purpose of improving the performance of the electrolytic capacitor.

In order to achieve the foregoing object, the electrolytic capacitor with conductive base of the present invention includes: A capacitor body, including: a shell, which is a hollow shell with two open ends; a capacitor, arranged in the casing; two elastic sealing bodies, respectively disposed at the two open ends; and A plurality of pins respectively have an inner end and an outer end, each of the inner ends is electrically connected to the capacitor, and each of the outer ends passes through each of the elastic sealing bodies from each of the open ends of the housing; and Two conductive bases are respectively disposed on each of the open ends of the casing, and each of the conductive bases includes: a connecting part having a first surface and a second surface, the first surface is connected to the surface of each of the elastic sealing bodies; and a pin portion connected to the second surface of the connecting portion; Wherein, each of the pins disposed on the same open end is electrically connected to each other through each of the conductive bases.

In the electrolytic capacitor with a conductive base of the present invention, the plurality of pins may include a plurality of positive electrodes and a plurality of negative electrodes, and the pins of the same polarity can be electrically connected to each other through the conductive bases. The plurality of pins reduce the overall impedance and capacitive reactance of the electrolytic capacitor, so as to reduce the power consumption of the electrolytic capacitor, thereby improving the performance of the electrolytic capacitor, and further applied to various electronic products requiring high performance.

Referring to FIG. 1 and FIG. 2 , in the first embodiment, the electrolytic capacitor 1 with a conductive base of the present invention includes a capacitor body 10 and two conductive bases 20 . The capacitor body 10 includes a casing 11 and a capacitor 12 . , two elastic sealing bodies 13 and a plurality of pins 14 . As shown in FIG. 2 , the casing 11 is a hollow casing with two open ends 111 , and the two open ends 111 are respectively provided with a fixing portion 112 . In this embodiment, the casing 11 is a cylindrical shape A hollow casing, and each of the fixing portions 112 is a convex portion surrounding the inner wall surface of the casing 11 , but the shapes of the casing 11 and each of the fixing portions 112 are not limited to this embodiment.

The capacitor 12 is disposed in the casing 11. Generally speaking, the capacitor 12 may include a capacitor element and a dielectric material combined with the capacitor element. The capacitor element is alternately composed of an anode film, a cathode film and a plurality of isolation layers It is formed by winding, and each of the isolation layers is arranged between the anode film and the cathode film to prevent the anode film and the cathode film from being in contact with each other during winding and causing a short circuit, and the capacitor element can be connected with different dielectrics. Electric materials are combined to form liquid, solid or solid liquid capacitors. For example, the dielectric material used in liquid capacitors can be electrolyte, the dielectric materials used in solid capacitors can be conductive polymers, and the dielectric materials used in solid liquid capacitors The dielectric material can be composed of both electrolyte and conductive polymer.

The two elastic sealing bodies 13 are respectively disposed in the two opening ends 111 of the housing 11 , and the elastic sealing bodies 13 are respectively fixed in the opening ends 111 by the fixing portions 112 of the housing 11 , respectively. Each of the elastic sealing bodies 13 is tightly connected with the inner wall surface of the casing 11 , so that a closed space isolated from the outside is formed inside the casing 11 , and the capacitor 12 is sealed in the casing 11 , so that the inner wall of the casing 11 is sealed. The capacitor 12 is isolated from the outside air and moisture to prevent the capacitor 12 from being oxidized due to contact with moisture in the environment, or from leakage current or overflow of dielectric materials, thereby providing protection for the capacitor 12 Each of the elastic sealing bodies 13 can be made of materials such as rubber, and each of the fixing portions 112 of the housing 11 is engaged with each of the open ends 111 to prevent the elastic sealing bodies 13 from falling off.

Each of the pins 14 has an inner end 141 and an outer end 142 , and the inner end 141 of each of the pins 14 is located in the casing 11 and is respectively disposed in the capacitor 12 and the anode film or the anode film in the capacitor 12 . The cathode films are electrically connected, and the inner ends 141 of the pins 14 are covered by the elastic sealing bodies 13 . In the elastic sealing body 13, each of the pins 14 connected to the anode film in the capacitor 12 is a positive pin, and each of the pins 14 connected to the cathode film in the capacitor 12 is a negative pin, and the plurality of pins The number of positive pins in the pins 14 can be plural, and the number of negative pins in the plural pins 14 can also be plural, and the pins 14 of the same polarity pass through the elastic sealing body 13 from the same open end 111 . For example, the positive lead of the plurality of leads 14 protrudes from one of the open ends 111 of the two open ends 111 , and the negative lead of the plurality of leads 14 goes out from the other open end 111 .

Each of the conductive bases 20 is respectively disposed on each of the open ends 111 of the casing 11 , and each of the conductive bases 20 includes a connecting portion 21 and a pin portion 22 , and the connecting portion 21 has a first surface 211 and a second surface 211 . The surface 212, the first surface 211 and the second surface 212 are positioned opposite to each other, the first surface 211 of the connecting portion 21 is connected to the surfaces of the elastic sealing bodies 13, and the connecting portion 21 can be adhered to The lead portion 22 is connected to the second surface 212 of the connecting portion 21 and is electrically connected to the connecting portion 21 , and the lead portion 22 can be along the housing 11 . The area of the first surface 211 and the second surface 212 of each of the connecting portions 21 is smaller than that of the surface of each of the elastic sealing bodies 13 . In the first embodiment, the connecting portion 21 of the conductive base 20 is a circular plate, the diameter of the connecting portion 21 is smaller than the diameter of each of the opening ends 111 and the respective elastic sealing bodies 13 , and the connecting portion 21 is attached to the It is suitable for the middle surface of each of the elastic sealing bodies 13 .

In the first embodiment, the outer ends 142 of the pins 14 protrude from the area where the conductive base 20 is not disposed on the surface of the elastic sealing body 13 , that is, the outer ends 142 of the pins 14 are The surface of the elastic sealing body 13 is not directly connected with the connecting parts 21 , and each outer end 142 penetrates the elastic sealing body 13 and bends to the second surface 212 of each connecting part 21 , The second surface 212 of each connecting portion 21 is attached, and each conductive base 20 is fixed to each open end 111 of the housing 11 by the bent outer ends 142 to prevent each conductive base 20 from falling off. , and each of the outer ends 142 is bent and electrically connected to the conductive base 20 , wherein, each of the pins 14 connected to the same conductive base 20 is of the same polarity, and each of the pins 14 passes through the pins of each of the conductive bases 20 The portion 22 is electrically connected to an external electronic device.

It should be noted that, in FIGS. 1 and 2 , in the first embodiment, each of the open ends 111 of the casing 11 respectively protrudes through the two pins 14 as an example, that is, one of the open ends 111 protrudes through the two positive pins, and the other An open end 111 protrudes through two negative pins, but the number of pins 14 of each open end 111 is not limited to this embodiment, and each open end 111 can be provided with different numbers of pins 14 respectively.

In the electrolytic capacitor 1 with a conductive base of the present invention, the capacitor 12 is connected through the plurality of pins 14, the plurality of pins 14 include a plurality of positive electrodes and a plurality of negative electrodes, and the plurality of positive electrodes in the plurality of pins 14 The pins and the plurality of negative pins can be electrically connected to each other through the conductive bases 20 respectively, and the impedance and capacitive reactance of the electrolytic capacitor are reduced by arranging the plurality of pins 14 to reduce the power consumption of the electrolytic capacitor and improve the performance of the electrolytic capacitor.

On the other hand, although the plurality of pins 14 of the electrolytic capacitor 1 with a conductive base of the present invention includes a plurality of positive electrodes and a plurality of negative electrodes, the plurality of pins 14 are electrically connected to the conductive bases 20 through each of the The pin portion 22 of the conductive base 20 is electrically connected to external components, so the present invention can still be applied to electronic components or devices using the two-pin 14-type capacitor 12, and the practical application of the electrolytic capacitor is not affected by the number of pins 14 .

Please refer to FIG. 3 and FIG. 4 , which are the second embodiment of the electrolytic capacitor 1 with a conductive base according to the present invention. The difference between the second embodiment and the first embodiment is that the connecting portions 21 of the conductive bases 20 are provided with There are a plurality of through holes 213, the plurality of through holes 213 penetrate through the first surface 211 and the second surface 212 of each of the connecting portions 21, and the outer end 142 of each of the pins 14 is inserted into each of the through holes 213 and the conductive The base 20 is electrically connected, and each of the pins 14 can be electrically connected to the wall surface of each of the through holes 213 , or to be electrically connected to each of the conductive bases 20 through soldering. The number is the same as the number of the plurality of pins 14 disposed on the same open end 111 .

In FIGS. 3 and 4 , it is taken as an example that the outer ends 142 of the pins 14 pass through the through holes 213 of the connection portions 21 , that is, the outer ends 142 of the pins 14 protrude from the connection portions 21 . In other embodiments, the outer ends 142 of the pins 14 can also be inserted into the through holes 213 of the connecting portions 21 without protruding from the first holes 213 of the connecting portions 21 . Two surfaces 212 , for example, the end of each of the outer ends 142 is flush with the second surface 212 of each of the connecting portions 21 .

To sum up, in the electrolytic capacitor 1 with a conductive base of the present invention, the capacitor 12 is connected with the plurality of pins 14, and the number of positive pins and negative pins of the electrolytic capacitor increases, and each of the pins of the same polarity The pins 14 can be electrically connected to each other through the conductive bases 20 and electrically connected to external components through the pin portions 22 of the conductive bases 20, thereby reducing the impedance and capacitive reactance of the electrolytic capacitor, thereby reducing the power of the electrolytic capacitor consumption, to achieve the purpose of improving the performance of electrolytic capacitors.

1: Electrolytic capacitors with conductive bases 10: Capacitor body 11: Shell 111: Open end 112: Fixed part 12: Capacitor 13: Elastomeric seal 14: Pin 141: inner end 142: Outer end 20: Conductive base 21: Connection part 211: First Surface 212: Second Surface 213: Perforation 22: Pin part

FIG. 1 is a schematic three-dimensional appearance diagram of the first embodiment of the electrolytic capacitor with a conductive base according to the present invention. 2 is a schematic cross-sectional view of the first embodiment of the electrolytic capacitor with a conductive base according to the present invention. FIG. 3 is a schematic three-dimensional appearance diagram of the second embodiment of the electrolytic capacitor with a conductive base according to the present invention. 4 is a schematic cross-sectional view of the second embodiment of the electrolytic capacitor with a conductive base according to the present invention.

1: Electrolytic capacitors with conductive bases

10: Capacitor body

11: Shell

111: Open end

13: Elastomeric seal

14: Pin

142: Outer end

20: Conductive base

21: Connection part

212: Second Surface

22: Pin part

Claims (4)

An electrolytic capacitor with a conductive base, comprising: a capacitor body, including: a shell, which is a hollow shell with two open ends; a capacitor, disposed in the shell; two elastic sealing bodies, respectively disposed in the shell two open ends; and a plurality of pins, respectively having an inner end and an outer end, each of the inner ends is electrically connected to the capacitor, and each of the outer ends penetrates each of the elastic sealing bodies from each of the open ends of the housing; and two conductive bases, respectively disposed at each of the open ends of the casing, each of the conductive bases includes: a connecting portion, which has a first surface and a second surface, the first surface is connected to the elastic sealing body. and a pin portion connected to the second surface of the connecting portion; wherein, each of the pins disposed on the same open end is electrically connected to each other through each of the conductive bases, and the outer end of each of the pins is separated from the elastic The surface of the sealing body penetrates the area without the conductive base, and each outer end penetrates the elastic sealing body and bends to the second surface of each connecting portion to fit the first surface of each connecting portion. Second surface. The electrolytic capacitor with a conductive base as claimed in claim 1, each of the open ends of the case has a fixing portion, the fixing portion is a convex portion surrounding the inner wall surface of the case, and the fixing portion seals each elastic seal The body is fixed on each of the open ends. According to the electrolytic capacitor with a conductive base as described in claim 1, each of the pins connected to the same conductive base is of the same polarity. According to the electrolytic capacitor with a conductive base as claimed in claim 1, the connection portion of each conductive base is a circular plate, and the diameter of the connection portion is smaller than the diameter of each of the open ends and each of the elastic sealing bodies.

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